Merge tag 'drm-misc-next-2022-02-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.18:

UAPI Changes:

Cross-subsystem Changes:
- Split out panel-lvds and lvds dt bindings .
- Put yes/no on/off disabled/enabled strings in linux/string_helpers.h
  and use it in drivers and tomoyo.
- Clarify dma_fence_chain and dma_fence_array should never include eachother.
- Flatten chains in syncobj's.
- Don't double add in fbdev/defio when page is already enlisted.
- Don't sort deferred-I/O pages by default in fbdev.

Core Changes:
- Fix missing pm_runtime_put_sync in bridge.
- Set modifier support to only linear fb modifier if drivers don't
  advertise support.
- As a result, we remove allow_fb_modifiers.
- Add missing clear for EDID Deep Color Modes in drm_reset_display_info.
- Assorted documentation updates.
- Warn once in drm_clflush if there is no arch support.
- Add missing select for dp helper in drm_panel_edp.
- Assorted small fixes.
- Improve fb-helper's clipping handling.
- Don't dump shmem mmaps in a core dump.
- Add accounting to ttm resource manager, and use it in amdgpu.
- Allow querying the detected eDP panel through debugfs.
- Add helpers for xrgb8888 to 8 and 1 bits gray.
- Improve drm's buddy allocator.
- Add selftests for the buddy allocator.

Driver Changes:
- Add support for nomodeset to a lot of drm drivers.
- Use drm_module_*_driver in a lot of drm drivers.
- Assorted small fixes to bridge/lt9611, v3d, vc4, vmwgfx, mxsfb, nouveau,
  bridge/dw-hdmi, panfrost, lima, ingenic, sprd, bridge/anx7625, ti-sn65dsi86.
- Add bridge/it6505.
- Create DP and DVI-I connectors in ast.
- Assorted nouveau backlight fixes.
- Rework amdgpu reset handling.
- Add dt bindings for ingenic,jz4780-dw-hdmi.
- Support reading edid through aux channel in ingenic.
- Add a drm driver for Solomon SSD130x OLED displays.
- Add simple support for sharp LQ140M1JW46.
- Add more panels to nt35560.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/686ec871-e77f-c230-22e5-9e3bb80f064a@linux.intel.com

168 files changed, 8047 insertions, 1688 deletions

diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
index 3e07f961e2f3..cb1bacb5a42b 100644
--- a/drivers/dma-buf/dma-fence-array.c
+++ b/drivers/dma-buf/dma-fence-array.c
@@ -176,6 +176,20 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
 
 	array->base.error = PENDING_ERROR;
 
+	/*
+	 * dma_fence_array objects should never contain any other fence
+	 * containers or otherwise we run into recursion and potential kernel
+	 * stack overflow on operations on the dma_fence_array.
+	 *
+	 * The correct way of handling this is to flatten out the array by the
+	 * caller instead.
+	 *
+	 * Enforce this here by checking that we don't create a dma_fence_array
+	 * with any container inside.
+	 */
+	while (num_fences--)
+		WARN_ON(dma_fence_is_container(fences[num_fences]));
+
 	return array;
 }
 EXPORT_SYMBOL(dma_fence_array_create);
diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c
index 1b4cb3e5cec9..06f8ef97c6e8 100644
--- a/drivers/dma-buf/dma-fence-chain.c
+++ b/drivers/dma-buf/dma-fence-chain.c
@@ -148,8 +148,7 @@ static bool dma_fence_chain_enable_signaling(struct dma_fence *fence)
 
 	dma_fence_get(&head->base);
 	dma_fence_chain_for_each(fence, &head->base) {
-		struct dma_fence_chain *chain = to_dma_fence_chain(fence);
-		struct dma_fence *f = chain ? chain->fence : fence;
+		struct dma_fence *f = dma_fence_chain_contained(fence);
 
 		dma_fence_get(f);
 		if (!dma_fence_add_callback(f, &head->cb, dma_fence_chain_cb)) {
@@ -165,8 +164,7 @@ static bool dma_fence_chain_enable_signaling(struct dma_fence *fence)
 static bool dma_fence_chain_signaled(struct dma_fence *fence)
 {
 	dma_fence_chain_for_each(fence, fence) {
-		struct dma_fence_chain *chain = to_dma_fence_chain(fence);
-		struct dma_fence *f = chain ? chain->fence : fence;
+		struct dma_fence *f = dma_fence_chain_contained(fence);
 
 		if (!dma_fence_is_signaled(f)) {
 			dma_fence_put(fence);
@@ -254,5 +252,14 @@ void dma_fence_chain_init(struct dma_fence_chain *chain,
 
 	dma_fence_init(&chain->base, &dma_fence_chain_ops,
 		       &chain->lock, context, seqno);
+
+	/*
+	 * Chaining dma_fence_chain container together is only allowed through
+	 * the prev fence and not through the contained fence.
+	 *
+	 * The correct way of handling this is to flatten out the fence
+	 * structure into a dma_fence_array by the caller instead.
+	 */
+	WARN_ON(dma_fence_is_chain(fence));
 }
 EXPORT_SYMBOL(dma_fence_chain_init);
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 6dd9a40b55d4..b51416405e86 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -256,6 +256,11 @@ void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence)
 
 	dma_resv_assert_held(obj);
 
+	/* Drivers should not add containers here, instead add each fence
+	 * individually.
+	 */
+	WARN_ON(dma_fence_is_container(fence));
+
 	fobj = dma_resv_shared_list(obj);
 	count = fobj->shared_count;
 
@@ -323,12 +328,8 @@ void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence)
 }
 EXPORT_SYMBOL(dma_resv_add_excl_fence);
 
-/**
- * dma_resv_iter_restart_unlocked - restart the unlocked iterator
- * @cursor: The dma_resv_iter object to restart
- *
- * Restart the unlocked iteration by initializing the cursor object.
- */
+/* Restart the iterator by initializing all the necessary fields, but not the
+ * relation to the dma_resv object. */
 static void dma_resv_iter_restart_unlocked(struct dma_resv_iter *cursor)
 {
 	cursor->seq = read_seqcount_begin(&cursor->obj->seq);
@@ -344,14 +345,7 @@ static void dma_resv_iter_restart_unlocked(struct dma_resv_iter *cursor)
 	cursor->is_restarted = true;
 }
 
-/**
- * dma_resv_iter_walk_unlocked - walk over fences in a dma_resv obj
- * @cursor: cursor to record the current position
- *
- * Return all the fences in the dma_resv object which are not yet signaled.
- * The returned fence has an extra local reference so will stay alive.
- * If a concurrent modify is detected the whole iteration is started over again.
- */
+/* Walk to the next not signaled fence and grab a reference to it */
 static void dma_resv_iter_walk_unlocked(struct dma_resv_iter *cursor)
 {
 	struct dma_resv *obj = cursor->obj;
@@ -387,6 +381,12 @@ static void dma_resv_iter_walk_unlocked(struct dma_resv_iter *cursor)
  * dma_resv_iter_first_unlocked - first fence in an unlocked dma_resv obj.
  * @cursor: the cursor with the current position
  *
+ * Subsequent fences are iterated with dma_resv_iter_next_unlocked().
+ *
+ * Beware that the iterator can be restarted.  Code which accumulates statistics
+ * or similar needs to check for this with dma_resv_iter_is_restarted(). For
+ * this reason prefer the locked dma_resv_iter_first() whenver possible.
+ *
  * Returns the first fence from an unlocked dma_resv obj.
  */
 struct dma_fence *dma_resv_iter_first_unlocked(struct dma_resv_iter *cursor)
@@ -406,6 +406,10 @@ EXPORT_SYMBOL(dma_resv_iter_first_unlocked);
  * dma_resv_iter_next_unlocked - next fence in an unlocked dma_resv obj.
  * @cursor: the cursor with the current position
  *
+ * Beware that the iterator can be restarted.  Code which accumulates statistics
+ * or similar needs to check for this with dma_resv_iter_is_restarted(). For
+ * this reason prefer the locked dma_resv_iter_next() whenver possible.
+ *
  * Returns the next fence from an unlocked dma_resv obj.
  */
 struct dma_fence *dma_resv_iter_next_unlocked(struct dma_resv_iter *cursor)
@@ -431,6 +435,8 @@ EXPORT_SYMBOL(dma_resv_iter_next_unlocked);
  * dma_resv_iter_first - first fence from a locked dma_resv object
  * @cursor: cursor to record the current position
  *
+ * Subsequent fences are iterated with dma_resv_iter_next_unlocked().
+ *
  * Return the first fence in the dma_resv object while holding the
  * &dma_resv.lock.
  */
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index dfdd3ec5f793..f1422bee3dcc 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -71,6 +71,7 @@ config DRM_DEBUG_SELFTEST
 	select DRM_DP_HELPER
 	select DRM_LIB_RANDOM
 	select DRM_KMS_HELPER
+	select DRM_BUDDY
 	select DRM_EXPORT_FOR_TESTS if m
 	default n
 	help
@@ -403,6 +404,8 @@ source "drivers/gpu/drm/xlnx/Kconfig"
 
 source "drivers/gpu/drm/gud/Kconfig"
 
+source "drivers/gpu/drm/solomon/Kconfig"
+
 source "drivers/gpu/drm/sprd/Kconfig"
 
 config DRM_HYPERV
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 8675c2af7ae1..c2ef5f9fce54 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -132,4 +132,5 @@ obj-$(CONFIG_DRM_TIDSS) += tidss/
 obj-y			+= xlnx/
 obj-y			+= gud/
 obj-$(CONFIG_DRM_HYPERV) += hyperv/
+obj-y			+= solomon/
 obj-$(CONFIG_DRM_SPRD) += sprd/
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 566303c9942f..8685784f24a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -815,6 +815,8 @@ struct ip_discovery_top;
 #define AMDGPU_RESET_MAGIC_NUM 64
 #define AMDGPU_MAX_DF_PERFMONS 4
 #define AMDGPU_PRODUCT_NAME_LEN 64
+struct amdgpu_reset_domain;
+
 struct amdgpu_device {
 	struct device			*dev;
 	struct pci_dev			*pdev;
@@ -1050,9 +1052,7 @@ struct amdgpu_device {
 	bool				in_s4;
 	bool				in_s0ix;
 
-	atomic_t 			in_gpu_reset;
 	enum pp_mp1_state               mp1_state;
-	struct rw_semaphore reset_sem;
 	struct amdgpu_doorbell_index doorbell_index;
 
 	struct mutex			notifier_lock;
@@ -1100,6 +1100,8 @@ struct amdgpu_device {
 	struct list_head                ras_list;
 
 	struct ip_discovery_top         *ip_top;
+
+	struct amdgpu_reset_domain	*reset_domain;
 };
 
 static inline struct amdgpu_device *drm_to_adev(struct drm_device *ddev)
@@ -1293,6 +1295,8 @@ bool amdgpu_device_has_job_running(struct amdgpu_device *adev);
 bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev);
 int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 			      struct amdgpu_job* job);
+int amdgpu_device_gpu_recover_imp(struct amdgpu_device *adev,
+			      struct amdgpu_job *job);
 void amdgpu_device_pci_config_reset(struct amdgpu_device *adev);
 int amdgpu_device_pci_reset(struct amdgpu_device *adev);
 bool amdgpu_device_need_post(struct amdgpu_device *adev);
@@ -1479,8 +1483,6 @@ static inline bool amdgpu_is_tmz(struct amdgpu_device *adev)
        return adev->gmc.tmz_enabled;
 }
 
-static inline int amdgpu_in_reset(struct amdgpu_device *adev)
-{
-	return atomic_read(&adev->in_gpu_reset);
-}
+int amdgpu_in_reset(struct amdgpu_device *adev);
+
 #endif
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 10b9e99c8941..e762e45b7b85 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -312,7 +312,7 @@ static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev,
 	}
 
 	total_vram = adev->gmc.real_vram_size - atomic64_read(&adev->vram_pin_size);
-	used_vram = amdgpu_vram_mgr_usage(&adev->mman.vram_mgr);
+	used_vram = ttm_resource_manager_usage(&adev->mman.vram_mgr.manager);
 	free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram;
 
 	spin_lock(&adev->mm_stats.lock);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index db8a8710333e..ae0c83237608 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -37,6 +37,8 @@
 #include "amdgpu_fw_attestation.h"
 #include "amdgpu_umr.h"
 
+#include "amdgpu_reset.h"
+
 #if defined(CONFIG_DEBUG_FS)
 
 /**
@@ -1284,7 +1286,7 @@ static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused)
 	}
 
 	/* Avoid accidently unparking the sched thread during GPU reset */
-	r = down_write_killable(&adev->reset_sem);
+	r = down_write_killable(&adev->reset_domain->sem);
 	if (r)
 		return r;
 
@@ -1313,7 +1315,7 @@ static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused)
 		kthread_unpark(ring->sched.thread);
 	}
 
-	up_write(&adev->reset_sem);
+	up_write(&adev->reset_domain->sem);
 
 	pm_runtime_mark_last_busy(dev->dev);
 	pm_runtime_put_autosuspend(dev->dev);
@@ -1522,7 +1524,7 @@ static int amdgpu_debugfs_ib_preempt(void *data, u64 val)
 		return -ENOMEM;
 
 	/* Avoid accidently unparking the sched thread during GPU reset */
-	r = down_read_killable(&adev->reset_sem);
+	r = down_read_killable(&adev->reset_domain->sem);
 	if (r)
 		goto pro_end;
 
@@ -1565,7 +1567,7 @@ failure:
 	/* restart the scheduler */
 	kthread_unpark(ring->sched.thread);
 
-	up_read(&adev->reset_sem);
+	up_read(&adev->reset_domain->sem);
 
 	ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 0cfccea722f8..ca8e76771ea1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -426,10 +426,10 @@ bool amdgpu_device_skip_hw_access(struct amdgpu_device *adev)
 	 * the lock.
 	 */
 	if (in_task()) {
-		if (down_read_trylock(&adev->reset_sem))
-			up_read(&adev->reset_sem);
+		if (down_read_trylock(&adev->reset_domain->sem))
+			up_read(&adev->reset_domain->sem);
 		else
-			lockdep_assert_held(&adev->reset_sem);
+			lockdep_assert_held(&adev->reset_domain->sem);
 	}
 #endif
 	return false;
@@ -455,9 +455,9 @@ uint32_t amdgpu_device_rreg(struct amdgpu_device *adev,
 	if ((reg * 4) < adev->rmmio_size) {
 		if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
 		    amdgpu_sriov_runtime(adev) &&
-		    down_read_trylock(&adev->reset_sem)) {
+		    down_read_trylock(&adev->reset_domain->sem)) {
 			ret = amdgpu_kiq_rreg(adev, reg);
-			up_read(&adev->reset_sem);
+			up_read(&adev->reset_domain->sem);
 		} else {
 			ret = readl(((void __iomem *)adev->rmmio) + (reg * 4));
 		}
@@ -540,9 +540,9 @@ void amdgpu_device_wreg(struct amdgpu_device *adev,
 	if ((reg * 4) < adev->rmmio_size) {
 		if (!(acc_flags & AMDGPU_REGS_NO_KIQ) &&
 		    amdgpu_sriov_runtime(adev) &&
-		    down_read_trylock(&adev->reset_sem)) {
+		    down_read_trylock(&adev->reset_domain->sem)) {
 			amdgpu_kiq_wreg(adev, reg, v);
-			up_read(&adev->reset_sem);
+			up_read(&adev->reset_domain->sem);
 		} else {
 			writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
 		}
@@ -2331,6 +2331,49 @@ static int amdgpu_device_fw_loading(struct amdgpu_device *adev)
 	return r;
 }
 
+static int amdgpu_device_init_schedulers(struct amdgpu_device *adev)
+{
+	long timeout;
+	int r, i;
+
+	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
+		struct amdgpu_ring *ring = adev->rings[i];
+
+		/* No need to setup the GPU scheduler for rings that don't need it */
+		if (!ring || ring->no_scheduler)
+			continue;
+
+		switch (ring->funcs->type) {
+		case AMDGPU_RING_TYPE_GFX:
+			timeout = adev->gfx_timeout;
+			break;
+		case AMDGPU_RING_TYPE_COMPUTE:
+			timeout = adev->compute_timeout;
+			break;
+		case AMDGPU_RING_TYPE_SDMA:
+			timeout = adev->sdma_timeout;
+			break;
+		default:
+			timeout = adev->video_timeout;
+			break;
+		}
+
+		r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
+				   ring->num_hw_submission, amdgpu_job_hang_limit,
+				   timeout, adev->reset_domain->wq,
+				   ring->sched_score, ring->name,
+				   adev->dev);
+		if (r) {
+			DRM_ERROR("Failed to create scheduler on ring %s.\n",
+				  ring->name);
+			return r;
+		}
+	}
+
+	return 0;
+}
+
+
 /**
  * amdgpu_device_ip_init - run init for hardware IPs
  *
@@ -2442,8 +2485,28 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 	if (r)
 		goto init_failed;
 
-	if (adev->gmc.xgmi.num_physical_nodes > 1)
-		amdgpu_xgmi_add_device(adev);
+	/**
+	 * In case of XGMI grab extra reference for reset domain for this device
+	 */
+	if (adev->gmc.xgmi.num_physical_nodes > 1) {
+		if (amdgpu_xgmi_add_device(adev) == 0) {
+			struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev);
+
+			if (!hive->reset_domain ||
+			    !amdgpu_reset_get_reset_domain(hive->reset_domain)) {
+				r = -ENOENT;
+				goto init_failed;
+			}
+
+			/* Drop the early temporary reset domain we created for device */
+			amdgpu_reset_put_reset_domain(adev->reset_domain);
+			adev->reset_domain = hive->reset_domain;
+		}
+	}
+
+	r = amdgpu_device_init_schedulers(adev);
+	if (r)
+		goto init_failed;
 
 	/* Don't init kfd if whole hive need to be reset during init */
 	if (!adev->gmc.xgmi.pending_reset)
@@ -3543,8 +3606,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	mutex_init(&adev->mn_lock);
 	mutex_init(&adev->virt.vf_errors.lock);
 	hash_init(adev->mn_hash);
-	atomic_set(&adev->in_gpu_reset, 0);
-	init_rwsem(&adev->reset_sem);
 	mutex_init(&adev->psp.mutex);
 	mutex_init(&adev->notifier_lock);
 	mutex_init(&adev->pm.stable_pstate_ctx_lock);
@@ -3630,6 +3691,15 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		return r;
 	}
 
+	/*
+	 * Reset domain needs to be present early, before XGMI hive discovered
+	 * (if any) and intitialized to use reset sem and in_gpu reset flag
+	 * early on during init.
+	 */
+	adev->reset_domain = amdgpu_reset_create_reset_domain(SINGLE_DEVICE ,"amdgpu-reset-dev");
+	if (!adev->reset_domain)
+		return -ENOMEM;
+
 	/* early init functions */
 	r = amdgpu_device_ip_early_init(adev);
 	if (r)
@@ -4006,6 +4076,9 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev)
 	if (adev->mman.discovery_bin)
 		amdgpu_discovery_fini(adev);
 
+	amdgpu_reset_put_reset_domain(adev->reset_domain);
+	adev->reset_domain = NULL;
+
 	kfree(adev->pci_state);
 
 }
@@ -4817,17 +4890,8 @@ end:
 	return r;
 }
 
-static bool amdgpu_device_lock_adev(struct amdgpu_device *adev,
-				struct amdgpu_hive_info *hive)
+static void amdgpu_device_set_mp1_state(struct amdgpu_device *adev)
 {
-	if (atomic_cmpxchg(&adev->in_gpu_reset, 0, 1) != 0)
-		return false;
-
-	if (hive) {
-		down_write_nest_lock(&adev->reset_sem, &hive->hive_lock);
-	} else {
-		down_write(&adev->reset_sem);
-	}
 
 	switch (amdgpu_asic_reset_method(adev)) {
 	case AMD_RESET_METHOD_MODE1:
@@ -4840,56 +4904,12 @@ static bool amdgpu_device_lock_adev(struct amdgpu_device *adev,
 		adev->mp1_state = PP_MP1_STATE_NONE;
 		break;
 	}
-
-	return true;
 }
 
-static void amdgpu_device_unlock_adev(struct amdgpu_device *adev)
+static void amdgpu_device_unset_mp1_state(struct amdgpu_device *adev)
 {
 	amdgpu_vf_error_trans_all(adev);
 	adev->mp1_state = PP_MP1_STATE_NONE;
-	atomic_set(&adev->in_gpu_reset, 0);
-	up_write(&adev->reset_sem);
-}
-
-/*
- * to lockup a list of amdgpu devices in a hive safely, if not a hive
- * with multiple nodes, it will be similar as amdgpu_device_lock_adev.
- *
- * unlock won't require roll back.
- */
-static int amdgpu_device_lock_hive_adev(struct amdgpu_device *adev, struct amdgpu_hive_info *hive)
-{
-	struct amdgpu_device *tmp_adev = NULL;
-
-	if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1)) {
-		if (!hive) {
-			dev_err(adev->dev, "Hive is NULL while device has multiple xgmi nodes");
-			return -ENODEV;
-		}
-		list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
-			if (!amdgpu_device_lock_adev(tmp_adev, hive))
-				goto roll_back;
-		}
-	} else if (!amdgpu_device_lock_adev(adev, hive))
-		return -EAGAIN;
-
-	return 0;
-roll_back:
-	if (!list_is_first(&tmp_adev->gmc.xgmi.head, &hive->device_list)) {
-		/*
-		 * if the lockup iteration break in the middle of a hive,
-		 * it may means there may has a race issue,
-		 * or a hive device locked up independently.
-		 * we may be in trouble and may not, so will try to roll back
-		 * the lock and give out a warnning.
-		 */
-		dev_warn(tmp_adev->dev, "Hive lock iteration broke in the middle. Rolling back to unlock");
-		list_for_each_entry_continue_reverse(tmp_adev, &hive->device_list, gmc.xgmi.head) {
-			amdgpu_device_unlock_adev(tmp_adev);
-		}
-	}
-	return -EAGAIN;
 }
 
 static void amdgpu_device_resume_display_audio(struct amdgpu_device *adev)
@@ -5023,7 +5043,7 @@ retry:
 }
 
 /**
- * amdgpu_device_gpu_recover - reset the asic and recover scheduler
+ * amdgpu_device_gpu_recover_imp - reset the asic and recover scheduler
  *
  * @adev: amdgpu_device pointer
  * @job: which job trigger hang
@@ -5033,7 +5053,7 @@ retry:
  * Returns 0 for success or an error on failure.
  */
 
-int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
+int amdgpu_device_gpu_recover_imp(struct amdgpu_device *adev,
 			      struct amdgpu_job *job)
 {
 	struct list_head device_list, *device_list_handle =  NULL;
@@ -5067,26 +5087,10 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 	dev_info(adev->dev, "GPU %s begin!\n",
 		need_emergency_restart ? "jobs stop":"reset");
 
-	/*
-	 * Here we trylock to avoid chain of resets executing from
-	 * either trigger by jobs on different adevs in XGMI hive or jobs on
-	 * different schedulers for same device while this TO handler is running.
-	 * We always reset all schedulers for device and all devices for XGMI
-	 * hive so that should take care of them too.
-	 */
 	if (!amdgpu_sriov_vf(adev))
 		hive = amdgpu_get_xgmi_hive(adev);
-	if (hive) {
-		if (atomic_cmpxchg(&hive->in_reset, 0, 1) != 0) {
-			DRM_INFO("Bailing on TDR for s_job:%llx, hive: %llx as another already in progress",
-				job ? job->base.id : -1, hive->hive_id);
-			amdgpu_put_xgmi_hive(hive);
-			if (job && job->vm)
-				drm_sched_increase_karma(&job->base);
-			return 0;
-		}
+	if (hive)
 		mutex_lock(&hive->hive_lock);
-	}
 
 	reset_context.method = AMD_RESET_METHOD_NONE;
 	reset_context.reset_req_dev = adev;
@@ -5095,22 +5099,6 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 	clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
 
 	/*
-	 * lock the device before we try to operate the linked list
-	 * if didn't get the device lock, don't touch the linked list since
-	 * others may iterating it.
-	 */
-	r = amdgpu_device_lock_hive_adev(adev, hive);
-	if (r) {
-		dev_info(adev->dev, "Bailing on TDR for s_job:%llx, as another already in progress",
-					job ? job->base.id : -1);
-
-		/* even we skipped this reset, still need to set the job to guilty */
-		if (job && job->vm)
-			drm_sched_increase_karma(&job->base);
-		goto skip_recovery;
-	}
-
-	/*
 	 * Build list of devices to reset.
 	 * In case we are in XGMI hive mode, resort the device list
 	 * to put adev in the 1st position.
@@ -5127,8 +5115,16 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 		device_list_handle = &device_list;
 	}
 
+	/* We need to lock reset domain only once both for XGMI and single device */
+	tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,
+				    reset_list);
+	amdgpu_device_lock_reset_domain(tmp_adev->reset_domain);
+
 	/* block all schedulers and reset given job's ring */
 	list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
+
+		amdgpu_device_set_mp1_state(tmp_adev);
+
 		/*
 		 * Try to put the audio codec into suspend state
 		 * before gpu reset started.
@@ -5280,21 +5276,55 @@ skip_sched_resume:
 
 		if (audio_suspended)
 			amdgpu_device_resume_display_audio(tmp_adev);
-		amdgpu_device_unlock_adev(tmp_adev);
+
+		amdgpu_device_unset_mp1_state(tmp_adev);
 	}
 
-skip_recovery:
+	tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device,
+					    reset_list);
+	amdgpu_device_unlock_reset_domain(tmp_adev->reset_domain);
+
 	if (hive) {
-		atomic_set(&hive->in_reset, 0);
 		mutex_unlock(&hive->hive_lock);
 		amdgpu_put_xgmi_hive(hive);
 	}
 
-	if (r && r != -EAGAIN)
+	if (r)
 		dev_info(adev->dev, "GPU reset end with ret = %d\n", r);
 	return r;
 }
 
+struct amdgpu_recover_work_struct {
+	struct work_struct base;
+	struct amdgpu_device *adev;
+	struct amdgpu_job *job;
+	int ret;
+};
+
+static void amdgpu_device_queue_gpu_recover_work(struct work_struct *work)
+{
+	struct amdgpu_recover_work_struct *recover_work = container_of(work, struct amdgpu_recover_work_struct, base);
+
+	recover_work->ret = amdgpu_device_gpu_recover_imp(recover_work->adev, recover_work->job);
+}
+/*
+ * Serialize gpu recover into reset domain single threaded wq
+ */
+int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
+				    struct amdgpu_job *job)
+{
+	struct amdgpu_recover_work_struct work = {.adev = adev, .job = job};
+
+	INIT_WORK(&work.base, amdgpu_device_queue_gpu_recover_work);
+
+	if (!amdgpu_reset_domain_schedule(adev->reset_domain, &work.base))
+		return -EAGAIN;
+
+	flush_work(&work.base);
+
+	return work.ret;
+}
+
 /**
  * amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot
  *
@@ -5482,20 +5512,6 @@ int amdgpu_device_baco_exit(struct drm_device *dev)
 	return 0;
 }
 
-static void amdgpu_cancel_all_tdr(struct amdgpu_device *adev)
-{
-	int i;
-
-	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
-		struct amdgpu_ring *ring = adev->rings[i];
-
-		if (!ring || !ring->sched.thread)
-			continue;
-
-		cancel_delayed_work_sync(&ring->sched.work_tdr);
-	}
-}
-
 /**
  * amdgpu_pci_error_detected - Called when a PCI error is detected.
  * @pdev: PCI device struct
@@ -5526,14 +5542,11 @@ pci_ers_result_t amdgpu_pci_error_detected(struct pci_dev *pdev, pci_channel_sta
 	/* Fatal error, prepare for slot reset */
 	case pci_channel_io_frozen:
 		/*
-		 * Cancel and wait for all TDRs in progress if failing to
-		 * set  adev->in_gpu_reset in amdgpu_device_lock_adev
-		 *
-		 * Locking adev->reset_sem will prevent any external access
+		 * Locking adev->reset_domain->sem will prevent any external access
 		 * to GPU during PCI error recovery
 		 */
-		while (!amdgpu_device_lock_adev(adev, NULL))
-			amdgpu_cancel_all_tdr(adev);
+		amdgpu_device_lock_reset_domain(adev->reset_domain);
+		amdgpu_device_set_mp1_state(adev);
 
 		/*
 		 * Block any work scheduling as we do for regular GPU reset
@@ -5640,7 +5653,8 @@ out:
 		DRM_INFO("PCIe error recovery succeeded\n");
 	} else {
 		DRM_ERROR("PCIe error recovery failed, err:%d", r);
-		amdgpu_device_unlock_adev(adev);
+		amdgpu_device_unset_mp1_state(adev);
+		amdgpu_device_unlock_reset_domain(adev->reset_domain);
 	}
 
 	return r ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
@@ -5677,7 +5691,8 @@ void amdgpu_pci_resume(struct pci_dev *pdev)
 		drm_sched_start(&ring->sched, true);
 	}
 
-	amdgpu_device_unlock_adev(adev);
+	amdgpu_device_unset_mp1_state(adev);
+	amdgpu_device_unlock_reset_domain(adev->reset_domain);
 }
 
 bool amdgpu_device_cache_pci_state(struct pci_dev *pdev)
@@ -5754,6 +5769,11 @@ void amdgpu_device_invalidate_hdp(struct amdgpu_device *adev,
 	amdgpu_asic_invalidate_hdp(adev, ring);
 }
 
+int amdgpu_in_reset(struct amdgpu_device *adev)
+{
+	return atomic_read(&adev->reset_domain->in_gpu_reset);
+	}
+	
 /**
  * amdgpu_device_halt() - bring hardware to some kind of halt state
  *
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index ec4c9ef5f795..9e5fc4cdb8ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -961,7 +961,7 @@ static int amdgpu_display_verify_sizes(struct amdgpu_framebuffer *rfb)
 	int ret;
 	unsigned int i, block_width, block_height, block_size_log2;
 
-	if (!rfb->base.dev->mode_config.allow_fb_modifiers)
+	if (rfb->base.dev->mode_config.fb_modifiers_not_supported)
 		return 0;
 
 	for (i = 0; i < format_info->num_planes; ++i) {
@@ -1148,7 +1148,7 @@ int amdgpu_display_framebuffer_init(struct drm_device *dev,
 	if (ret)
 		return ret;
 
-	if (!dev->mode_config.allow_fb_modifiers) {
+	if (dev->mode_config.fb_modifiers_not_supported) {
 		drm_WARN_ONCE(dev, adev->family >= AMDGPU_FAMILY_AI,
 			      "GFX9+ requires FB check based on format modifier\n");
 		ret = check_tiling_flags_gfx6(rfb);
@@ -1156,7 +1156,7 @@ int amdgpu_display_framebuffer_init(struct drm_device *dev,
 			return ret;
 	}
 
-	if (dev->mode_config.allow_fb_modifiers &&
+	if (!dev->mode_config.fb_modifiers_not_supported &&
 	    !(rfb->base.flags & DRM_MODE_FB_MODIFIERS)) {
 		ret = convert_tiling_flags_to_modifier(rfb);
 		if (ret) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 45977a72b5dd..5d13ed376ab4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -446,24 +446,18 @@ int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
  * for the requested ring.
  *
  * @ring: ring to init the fence driver on
- * @num_hw_submission: number of entries on the hardware queue
- * @sched_score: optional score atomic shared with other schedulers
  *
  * Init the fence driver for the requested ring (all asics).
  * Helper function for amdgpu_fence_driver_init().
  */
-int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
-				  unsigned num_hw_submission,
-				  atomic_t *sched_score)
+int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)
 {
 	struct amdgpu_device *adev = ring->adev;
-	long timeout;
-	int r;
 
 	if (!adev)
 		return -EINVAL;
 
-	if (!is_power_of_2(num_hw_submission))
+	if (!is_power_of_2(ring->num_hw_submission))
 		return -EINVAL;
 
 	ring->fence_drv.cpu_addr = NULL;
@@ -474,41 +468,14 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
 
 	timer_setup(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback, 0);
 
-	ring->fence_drv.num_fences_mask = num_hw_submission * 2 - 1;
+	ring->fence_drv.num_fences_mask = ring->num_hw_submission * 2 - 1;
 	spin_lock_init(&ring->fence_drv.lock);
-	ring->fence_drv.fences = kcalloc(num_hw_submission * 2, sizeof(void *),
+	ring->fence_drv.fences = kcalloc(ring->num_hw_submission * 2, sizeof(void *),
 					 GFP_KERNEL);
+
 	if (!ring->fence_drv.fences)
 		return -ENOMEM;
 
-	/* No need to setup the GPU scheduler for rings that don't need it */
-	if (ring->no_scheduler)
-		return 0;
-
-	switch (ring->funcs->type) {
-	case AMDGPU_RING_TYPE_GFX:
-		timeout = adev->gfx_timeout;
-		break;
-	case AMDGPU_RING_TYPE_COMPUTE:
-		timeout = adev->compute_timeout;
-		break;
-	case AMDGPU_RING_TYPE_SDMA:
-		timeout = adev->sdma_timeout;
-		break;
-	default:
-		timeout = adev->video_timeout;
-		break;
-	}
-
-	r = drm_sched_init(&ring->sched, &amdgpu_sched_ops,
-			   num_hw_submission, amdgpu_job_hang_limit,
-			   timeout, NULL, sched_score, ring->name);
-	if (r) {
-		DRM_ERROR("Failed to create scheduler on ring %s.\n",
-			  ring->name);
-		return r;
-	}
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
index 899a47011a67..dd78402e3cb0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -60,7 +60,7 @@ static ssize_t amdgpu_mem_info_gtt_total_show(struct device *dev,
 	struct ttm_resource_manager *man;
 
 	man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
-	return sysfs_emit(buf, "%llu\n", man->size * PAGE_SIZE);
+	return sysfs_emit(buf, "%llu\n", man->size);
 }
 
 /**
@@ -77,8 +77,9 @@ static ssize_t amdgpu_mem_info_gtt_used_show(struct device *dev,
 {
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = drm_to_adev(ddev);
+	struct ttm_resource_manager *man = &adev->mman.gtt_mgr.manager;
 
-	return sysfs_emit(buf, "%llu\n", amdgpu_gtt_mgr_usage(&adev->mman.gtt_mgr));
+	return sysfs_emit(buf, "%llu\n", ttm_resource_manager_usage(man));
 }
 
 static DEVICE_ATTR(mem_info_gtt_total, S_IRUGO,
@@ -130,20 +131,17 @@ static int amdgpu_gtt_mgr_new(struct ttm_resource_manager *man,
 	struct amdgpu_gtt_node *node;
 	int r;
 
-	if (!(place->flags & TTM_PL_FLAG_TEMPORARY) &&
-	    atomic64_add_return(num_pages, &mgr->used) >  man->size) {
-		atomic64_sub(num_pages, &mgr->used);
-		return -ENOSPC;
-	}
-
 	node = kzalloc(struct_size(node, base.mm_nodes, 1), GFP_KERNEL);
-	if (!node) {
-		r = -ENOMEM;
-		goto err_out;
-	}
+	if (!node)
+		return -ENOMEM;
 
 	node->tbo = tbo;
 	ttm_resource_init(tbo, place, &node->base.base);
+	if (!(place->flags & TTM_PL_FLAG_TEMPORARY) &&
+	    ttm_resource_manager_usage(man) > man->size) {
+		r = -ENOSPC;
+		goto err_free;
+	}
 
 	if (place->lpfn) {
 		spin_lock(&mgr->lock);
@@ -169,11 +167,6 @@ static int amdgpu_gtt_mgr_new(struct ttm_resource_manager *man,
 err_free:
 	ttm_resource_fini(man, &node->base.base);
 	kfree(node);
-
-err_out:
-	if (!(place->flags & TTM_PL_FLAG_TEMPORARY))
-		atomic64_sub(num_pages, &mgr->used);
-
 	return r;
 }
 
@@ -196,26 +189,11 @@ static void amdgpu_gtt_mgr_del(struct ttm_resource_manager *man,
 		drm_mm_remove_node(&node->base.mm_nodes[0]);
 	spin_unlock(&mgr->lock);
 
-	if (!(res->placement & TTM_PL_FLAG_TEMPORARY))
-		atomic64_sub(res->num_pages, &mgr->used);
-
 	ttm_resource_fini(man, res);
 	kfree(node);
 }
 
 /**
- * amdgpu_gtt_mgr_usage - return usage of GTT domain
- *
- * @mgr: amdgpu_gtt_mgr pointer
- *
- * Return how many bytes are used in the GTT domain
- */
-uint64_t amdgpu_gtt_mgr_usage(struct amdgpu_gtt_mgr *mgr)
-{
-	return atomic64_read(&mgr->used) * PAGE_SIZE;
-}
-
-/**
  * amdgpu_gtt_mgr_recover - re-init gart
  *
  * @mgr: amdgpu_gtt_mgr pointer
@@ -255,9 +233,6 @@ static void amdgpu_gtt_mgr_debug(struct ttm_resource_manager *man,
 	spin_lock(&mgr->lock);
 	drm_mm_print(&mgr->mm, printer);
 	spin_unlock(&mgr->lock);
-
-	drm_printf(printer, "man size:%llu pages,  gtt used:%llu pages\n",
-		   man->size, atomic64_read(&mgr->used));
 }
 
 static const struct ttm_resource_manager_func amdgpu_gtt_mgr_func = {
@@ -283,14 +258,12 @@ int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size)
 	man->use_tt = true;
 	man->func = &amdgpu_gtt_mgr_func;
 
-	ttm_resource_manager_init(man, &adev->mman.bdev,
-				  gtt_size >> PAGE_SHIFT);
+	ttm_resource_manager_init(man, &adev->mman.bdev, gtt_size);
 
 	start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS;
 	size = (adev->gmc.gart_size >> PAGE_SHIFT) - start;
 	drm_mm_init(&mgr->mm, start, size);
 	spin_lock_init(&mgr->lock);
-	atomic64_set(&mgr->used, 0);
 
 	ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, &mgr->manager);
 	ttm_resource_manager_set_used(man, true);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index 4870e093213d..d970336d2261 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -64,10 +64,9 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 		  ti.process_name, ti.tgid, ti.task_name, ti.pid);
 
 	if (amdgpu_device_should_recover_gpu(ring->adev)) {
-		r = amdgpu_device_gpu_recover(ring->adev, job);
+		r = amdgpu_device_gpu_recover_imp(ring->adev, job);
 		if (r)
 			DRM_ERROR("GPU Recovery Failed: %d\n", r);
-
 	} else {
 		drm_sched_suspend_timeout(&ring->sched);
 		if (amdgpu_sriov_vf(adev))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 9f985bd463be..6b626c293e72 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -604,13 +604,13 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		ui64 = atomic64_read(&adev->num_vram_cpu_page_faults);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_VRAM_USAGE:
-		ui64 = amdgpu_vram_mgr_usage(&adev->mman.vram_mgr);
+		ui64 = ttm_resource_manager_usage(&adev->mman.vram_mgr.manager);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_VIS_VRAM_USAGE:
 		ui64 = amdgpu_vram_mgr_vis_usage(&adev->mman.vram_mgr);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_GTT_USAGE:
-		ui64 = amdgpu_gtt_mgr_usage(&adev->mman.gtt_mgr);
+		ui64 = ttm_resource_manager_usage(&adev->mman.gtt_mgr.manager);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_GDS_CONFIG: {
 		struct drm_amdgpu_info_gds gds_info;
@@ -642,14 +642,17 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	case AMDGPU_INFO_MEMORY: {
 		struct drm_amdgpu_memory_info mem;
 		struct ttm_resource_manager *gtt_man =
-			ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
+			&adev->mman.gtt_mgr.manager;
+		struct ttm_resource_manager *vram_man =
+			&adev->mman.vram_mgr.manager;
+
 		memset(&mem, 0, sizeof(mem));
 		mem.vram.total_heap_size = adev->gmc.real_vram_size;
 		mem.vram.usable_heap_size = adev->gmc.real_vram_size -
 			atomic64_read(&adev->vram_pin_size) -
 			AMDGPU_VM_RESERVED_VRAM;
 		mem.vram.heap_usage =
-			amdgpu_vram_mgr_usage(&adev->mman.vram_mgr);
+			ttm_resource_manager_usage(vram_man);
 		mem.vram.max_allocation = mem.vram.usable_heap_size * 3 / 4;
 
 		mem.cpu_accessible_vram.total_heap_size =
@@ -667,8 +670,7 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		mem.gtt.total_heap_size *= PAGE_SIZE;
 		mem.gtt.usable_heap_size = mem.gtt.total_heap_size -
 			atomic64_read(&adev->gart_pin_size);
-		mem.gtt.heap_usage =
-			amdgpu_gtt_mgr_usage(&adev->mman.gtt_mgr);
+		mem.gtt.heap_usage = ttm_resource_manager_usage(gtt_man);
 		mem.gtt.max_allocation = mem.gtt.usable_heap_size * 3 / 4;
 
 		return copy_to_user(out, &mem,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 23c9a60693ee..25731719c627 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -451,7 +451,7 @@ static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
 	if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 		man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
 
-		if (size < (man->size << PAGE_SHIFT))
+		if (size < man->size)
 			return true;
 		else
 			goto fail;
@@ -460,7 +460,7 @@ static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
 	if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
 		man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
 
-		if (size < (man->size << PAGE_SHIFT))
+		if (size < man->size)
 			return true;
 		else
 			goto fail;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
index 0d85c2096ab5..e8adfd0a570a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c
@@ -25,12 +25,6 @@
 
 #include "amdgpu.h"
 
-static inline struct amdgpu_preempt_mgr *
-to_preempt_mgr(struct ttm_resource_manager *man)
-{
-	return container_of(man, struct amdgpu_preempt_mgr, manager);
-}
-
 /**
  * DOC: mem_info_preempt_used
  *
@@ -45,10 +39,9 @@ static ssize_t mem_info_preempt_used_show(struct device *dev,
 {
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = drm_to_adev(ddev);
-	struct ttm_resource_manager *man;
+	struct ttm_resource_manager *man = &adev->mman.preempt_mgr;
 
-	man = ttm_manager_type(&adev->mman.bdev, AMDGPU_PL_PREEMPT);
-	return sysfs_emit(buf, "%llu\n", amdgpu_preempt_mgr_usage(man));
+	return sysfs_emit(buf, "%llu\n", ttm_resource_manager_usage(man));
 }
 
 static DEVICE_ATTR_RO(mem_info_preempt_used);
@@ -68,16 +61,12 @@ static int amdgpu_preempt_mgr_new(struct ttm_resource_manager *man,
 				  const struct ttm_place *place,
 				  struct ttm_resource **res)
 {
-	struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man);
-
 	*res = kzalloc(sizeof(**res), GFP_KERNEL);
 	if (!*res)
 		return -ENOMEM;
 
 	ttm_resource_init(tbo, place, *res);
 	(*res)->start = AMDGPU_BO_INVALID_OFFSET;
-
-	atomic64_add((*res)->num_pages, &mgr->used);
 	return 0;
 }
 
@@ -92,49 +81,13 @@ static int amdgpu_preempt_mgr_new(struct ttm_resource_manager *man,
 static void amdgpu_preempt_mgr_del(struct ttm_resource_manager *man,
 				   struct ttm_resource *res)
 {
-	struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man);
-
-	atomic64_sub(res->num_pages, &mgr->used);
 	ttm_resource_fini(man, res);
 	kfree(res);
 }
 
-/**
- * amdgpu_preempt_mgr_usage - return usage of PREEMPT domain
- *
- * @man: TTM memory type manager
- *
- * Return how many bytes are used in the GTT domain
- */
-uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man)
-{
-	struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man);
-	s64 result = atomic64_read(&mgr->used);
-
-	return (result > 0 ? result : 0) * PAGE_SIZE;
-}
-
-/**
- * amdgpu_preempt_mgr_debug - dump VRAM table
- *
- * @man: TTM memory type manager
- * @printer: DRM printer to use
- *
- * Dump the table content using printk.
- */
-static void amdgpu_preempt_mgr_debug(struct ttm_resource_manager *man,
-				     struct drm_printer *printer)
-{
-	struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man);
-
-	drm_printf(printer, "man size:%llu pages, preempt used:%lld pages\n",
-		   man->size, (u64)atomic64_read(&mgr->used));
-}
-
 static const struct ttm_resource_manager_func amdgpu_preempt_mgr_func = {
 	.alloc = amdgpu_preempt_mgr_new,
 	.free = amdgpu_preempt_mgr_del,
-	.debug = amdgpu_preempt_mgr_debug
 };
 
 /**
@@ -146,8 +99,7 @@ static const struct ttm_resource_manager_func amdgpu_preempt_mgr_func = {
  */
 int amdgpu_preempt_mgr_init(struct amdgpu_device *adev)
 {
-	struct amdgpu_preempt_mgr *mgr = &adev->mman.preempt_mgr;
-	struct ttm_resource_manager *man = &mgr->manager;
+	struct ttm_resource_manager *man = &adev->mman.preempt_mgr;
 	int ret;
 
 	man->use_tt = true;
@@ -155,16 +107,13 @@ int amdgpu_preempt_mgr_init(struct amdgpu_device *adev)
 
 	ttm_resource_manager_init(man, &adev->mman.bdev, (1 << 30));
 
-	atomic64_set(&mgr->used, 0);
-
 	ret = device_create_file(adev->dev, &dev_attr_mem_info_preempt_used);
 	if (ret) {
 		DRM_ERROR("Failed to create device file mem_info_preempt_used\n");
 		return ret;
 	}
 
-	ttm_set_driver_manager(&adev->mman.bdev, AMDGPU_PL_PREEMPT,
-			       &mgr->manager);
+	ttm_set_driver_manager(&adev->mman.bdev, AMDGPU_PL_PREEMPT, man);
 	ttm_resource_manager_set_used(man, true);
 	return 0;
 }
@@ -179,8 +128,7 @@ int amdgpu_preempt_mgr_init(struct amdgpu_device *adev)
  */
 void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev)
 {
-	struct amdgpu_preempt_mgr *mgr = &adev->mman.preempt_mgr;
-	struct ttm_resource_manager *man = &mgr->manager;
+	struct ttm_resource_manager *man = &adev->mman.preempt_mgr;
 	int ret;
 
 	ttm_resource_manager_set_used(man, false);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index 2b844a5aafdb..a44f2eeed6ef 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -31,6 +31,8 @@
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 
+#include "amdgpu_reset.h"
+
 #define EEPROM_I2C_MADDR_VEGA20         0x0
 #define EEPROM_I2C_MADDR_ARCTURUS       0x40000
 #define EEPROM_I2C_MADDR_ARCTURUS_D342  0x0
@@ -193,12 +195,12 @@ static int __write_table_header(struct amdgpu_ras_eeprom_control *control)
 	__encode_table_header_to_buf(&control->tbl_hdr, buf);
 
 	/* i2c may be unstable in gpu reset */
-	down_read(&adev->reset_sem);
+	down_read(&adev->reset_domain->sem);
 	res = amdgpu_eeprom_write(adev->pm.ras_eeprom_i2c_bus,
 				  control->i2c_address +
 				  control->ras_header_offset,
 				  buf, RAS_TABLE_HEADER_SIZE);
-	up_read(&adev->reset_sem);
+	up_read(&adev->reset_domain->sem);
 
 	if (res < 0) {
 		DRM_ERROR("Failed to write EEPROM table header:%d", res);
@@ -390,13 +392,13 @@ static int __amdgpu_ras_eeprom_write(struct amdgpu_ras_eeprom_control *control,
 	int res;
 
 	/* i2c may be unstable in gpu reset */
-	down_read(&adev->reset_sem);
+	down_read(&adev->reset_domain->sem);
 	buf_size = num * RAS_TABLE_RECORD_SIZE;
 	res = amdgpu_eeprom_write(adev->pm.ras_eeprom_i2c_bus,
 				  control->i2c_address +
 				  RAS_INDEX_TO_OFFSET(control, fri),
 				  buf, buf_size);
-	up_read(&adev->reset_sem);
+	up_read(&adev->reset_domain->sem);
 	if (res < 0) {
 		DRM_ERROR("Writing %d EEPROM table records error:%d",
 			  num, res);
@@ -550,12 +552,12 @@ amdgpu_ras_eeprom_update_header(struct amdgpu_ras_eeprom_control *control)
 		goto Out;
 	}
 
-	down_read(&adev->reset_sem);
+	down_read(&adev->reset_domain->sem);
 	res = amdgpu_eeprom_read(adev->pm.ras_eeprom_i2c_bus,
 				 control->i2c_address +
 				 control->ras_record_offset,
 				 buf, buf_size);
-	up_read(&adev->reset_sem);
+	up_read(&adev->reset_domain->sem);
 	if (res < 0) {
 		DRM_ERROR("EEPROM failed reading records:%d\n",
 			  res);
@@ -645,13 +647,13 @@ static int __amdgpu_ras_eeprom_read(struct amdgpu_ras_eeprom_control *control,
 	int res;
 
 	/* i2c may be unstable in gpu reset */
-	down_read(&adev->reset_sem);
+	down_read(&adev->reset_domain->sem);
 	buf_size = num * RAS_TABLE_RECORD_SIZE;
 	res = amdgpu_eeprom_read(adev->pm.ras_eeprom_i2c_bus,
 				 control->i2c_address +
 				 RAS_INDEX_TO_OFFSET(control, fri),
 				 buf, buf_size);
-	up_read(&adev->reset_sem);
+	up_read(&adev->reset_domain->sem);
 	if (res < 0) {
 		DRM_ERROR("Reading %d EEPROM table records error:%d",
 			  num, res);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
index 02afd4115675..248d64158721 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
@@ -96,3 +96,59 @@ int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
 	return reset_handler->restore_hwcontext(adev->reset_cntl,
 						reset_context);
 }
+
+
+void amdgpu_reset_destroy_reset_domain(struct kref *ref)
+{
+	struct amdgpu_reset_domain *reset_domain = container_of(ref,
+								struct amdgpu_reset_domain,
+								refcount);
+	if (reset_domain->wq)
+		destroy_workqueue(reset_domain->wq);
+
+	kvfree(reset_domain);
+}
+
+struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
+							     char *wq_name)
+{
+	struct amdgpu_reset_domain *reset_domain;
+
+	reset_domain = kvzalloc(sizeof(struct amdgpu_reset_domain), GFP_KERNEL);
+	if (!reset_domain) {
+		DRM_ERROR("Failed to allocate amdgpu_reset_domain!");
+		return NULL;
+	}
+
+	reset_domain->type = type;
+	kref_init(&reset_domain->refcount);
+
+	reset_domain->wq = create_singlethread_workqueue(wq_name);
+	if (!reset_domain->wq) {
+		DRM_ERROR("Failed to allocate wq for amdgpu_reset_domain!");
+		amdgpu_reset_put_reset_domain(reset_domain);
+		return NULL;
+
+	}
+
+	atomic_set(&reset_domain->in_gpu_reset, 0);
+	init_rwsem(&reset_domain->sem);
+
+	return reset_domain;
+}
+
+void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain)
+{
+	atomic_set(&reset_domain->in_gpu_reset, 1);
+	down_write(&reset_domain->sem);
+}
+
+
+void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain)
+{
+	atomic_set(&reset_domain->in_gpu_reset, 0);
+	up_write(&reset_domain->sem);
+}
+
+
+
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
index e00d38d9160a..1949dbe28a86 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
@@ -70,6 +70,21 @@ struct amdgpu_reset_control {
 	void (*async_reset)(struct work_struct *work);
 };
 
+
+enum amdgpu_reset_domain_type {
+	SINGLE_DEVICE,
+	XGMI_HIVE
+};
+
+struct amdgpu_reset_domain {
+	struct kref refcount;
+	struct workqueue_struct *wq;
+	enum amdgpu_reset_domain_type type;
+	struct rw_semaphore sem;
+	atomic_t in_gpu_reset;
+};
+
+
 int amdgpu_reset_init(struct amdgpu_device *adev);
 int amdgpu_reset_fini(struct amdgpu_device *adev);
 
@@ -82,4 +97,29 @@ int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
 int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
 			     struct amdgpu_reset_handler *handler);
 
+struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,
+							     char *wq_name);
+
+void amdgpu_reset_destroy_reset_domain(struct kref *ref);
+
+static inline bool amdgpu_reset_get_reset_domain(struct amdgpu_reset_domain *domain)
+{
+	return kref_get_unless_zero(&domain->refcount) != 0;
+}
+
+static inline void amdgpu_reset_put_reset_domain(struct amdgpu_reset_domain *domain)
+{
+	kref_put(&domain->refcount, amdgpu_reset_destroy_reset_domain);
+}
+
+static inline bool amdgpu_reset_domain_schedule(struct amdgpu_reset_domain *domain,
+						struct work_struct *work)
+{
+	return queue_work(domain->wq, work);
+}
+
+void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain);
+
+void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain);
+
 #endif
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index ab2351ba9574..35bcb6dc1816 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -191,8 +191,9 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
 		ring->adev = adev;
 		ring->idx = adev->num_rings++;
 		adev->rings[ring->idx] = ring;
-		r = amdgpu_fence_driver_init_ring(ring, sched_hw_submission,
-						  sched_score);
+		ring->num_hw_submission = sched_hw_submission;
+		ring->sched_score = sched_score;
+		r = amdgpu_fence_driver_init_ring(ring);
 		if (r)
 			return r;
 	}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index fae7d185ad0d..48365da213dc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -114,9 +114,7 @@ struct amdgpu_fence_driver {
 void amdgpu_fence_driver_clear_job_fences(struct amdgpu_ring *ring);
 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring);
 
-int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
-				  unsigned num_hw_submission,
-				  atomic_t *sched_score);
+int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring);
 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
 				   struct amdgpu_irq_src *irq_src,
 				   unsigned irq_type);
@@ -251,6 +249,8 @@ struct amdgpu_ring {
 	bool			has_compute_vm_bug;
 	bool			no_scheduler;
 	int			hw_prio;
+	unsigned 		num_hw_submission;
+	atomic_t		*sched_score;
 };
 
 #define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
index f7d8487799b2..40e06745fae9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -261,10 +261,9 @@ int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync,
 
 	dma_resv_for_each_fence(&cursor, resv, true, f) {
 		dma_fence_chain_for_each(f, f) {
-			struct dma_fence_chain *chain = to_dma_fence_chain(f);
+			struct dma_fence *tmp = dma_fence_chain_contained(f);
 
-			if (amdgpu_sync_test_fence(adev, mode, owner, chain ?
-						   chain->fence : f)) {
+			if (amdgpu_sync_test_fence(adev, mode, owner, tmp)) {
 				r = amdgpu_sync_fence(sync, f);
 				dma_fence_put(f);
 				if (r)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 414a22dddc78..4b9ee6e27f74 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1941,7 +1941,7 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, bool enable)
 		size = adev->gmc.real_vram_size;
 	else
 		size = adev->gmc.visible_vram_size;
-	man->size = size >> PAGE_SHIFT;
+	man->size = size;
 	adev->mman.buffer_funcs_enabled = enable;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index 0e4ecc77db3f..9120ae80ef52 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -44,7 +44,6 @@ struct amdgpu_vram_mgr {
 	spinlock_t lock;
 	struct list_head reservations_pending;
 	struct list_head reserved_pages;
-	atomic64_t usage;
 	atomic64_t vis_usage;
 };
 
@@ -52,12 +51,6 @@ struct amdgpu_gtt_mgr {
 	struct ttm_resource_manager manager;
 	struct drm_mm mm;
 	spinlock_t lock;
-	atomic64_t used;
-};
-
-struct amdgpu_preempt_mgr {
-	struct ttm_resource_manager manager;
-	atomic64_t used;
 };
 
 struct amdgpu_mman {
@@ -76,7 +69,7 @@ struct amdgpu_mman {
 
 	struct amdgpu_vram_mgr vram_mgr;
 	struct amdgpu_gtt_mgr gtt_mgr;
-	struct amdgpu_preempt_mgr preempt_mgr;
+	struct ttm_resource_manager preempt_mgr;
 
 	uint64_t		stolen_vga_size;
 	struct amdgpu_bo	*stolen_vga_memory;
@@ -118,7 +111,6 @@ int amdgpu_vram_mgr_init(struct amdgpu_device *adev);
 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev);
 
 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem);
-uint64_t amdgpu_gtt_mgr_usage(struct amdgpu_gtt_mgr *mgr);
 void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr);
 
 uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man);
@@ -133,7 +125,6 @@ int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
 void amdgpu_vram_mgr_free_sgt(struct device *dev,
 			      enum dma_data_direction dir,
 			      struct sg_table *sgt);
-uint64_t amdgpu_vram_mgr_usage(struct amdgpu_vram_mgr *mgr);
 uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr);
 int amdgpu_vram_mgr_reserve_range(struct amdgpu_vram_mgr *mgr,
 				  uint64_t start, uint64_t size);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 5656bf7d9267..a025f080aa6a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -575,8 +575,10 @@ static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev)
 	vf2pf_info->driver_cert = 0;
 	vf2pf_info->os_info.all = 0;
 
-	vf2pf_info->fb_usage = amdgpu_vram_mgr_usage(&adev->mman.vram_mgr) >> 20;
-	vf2pf_info->fb_vis_usage = amdgpu_vram_mgr_vis_usage(&adev->mman.vram_mgr) >> 20;
+	vf2pf_info->fb_usage =
+		ttm_resource_manager_usage(&adev->mman.vram_mgr.manager) >> 20;
+	vf2pf_info->fb_vis_usage =
+		amdgpu_vram_mgr_vis_usage(&adev->mman.vram_mgr) >> 20;
 	vf2pf_info->fb_size = adev->gmc.real_vram_size >> 20;
 	vf2pf_info->fb_vis_size = adev->gmc.visible_vram_size >> 20;
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index fce9a13a6ba1..0a7611648573 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -96,9 +96,9 @@ static ssize_t amdgpu_mem_info_vram_used_show(struct device *dev,
 {
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = drm_to_adev(ddev);
+	struct ttm_resource_manager *man = &adev->mman.vram_mgr.manager;
 
-	return sysfs_emit(buf, "%llu\n",
-			  amdgpu_vram_mgr_usage(&adev->mman.vram_mgr));
+	return sysfs_emit(buf, "%llu\n", ttm_resource_manager_usage(man));
 }
 
 /**
@@ -253,7 +253,9 @@ static void amdgpu_vram_mgr_do_reserve(struct ttm_resource_manager *man)
 
 		vis_usage = amdgpu_vram_mgr_vis_size(adev, &rsv->mm_node);
 		atomic64_add(vis_usage, &mgr->vis_usage);
-		atomic64_add(rsv->mm_node.size << PAGE_SHIFT, &mgr->usage);
+		spin_lock(&man->bdev->lru_lock);
+		man->usage += rsv->mm_node.size << PAGE_SHIFT;
+		spin_unlock(&man->bdev->lru_lock);
 		list_move(&rsv->node, &mgr->reserved_pages);
 	}
 }
@@ -378,19 +380,13 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
 
 	lpfn = place->lpfn;
 	if (!lpfn)
-		lpfn = man->size;
+		lpfn = man->size >> PAGE_SHIFT;
 
 	max_bytes = adev->gmc.mc_vram_size;
 	if (tbo->type != ttm_bo_type_kernel)
 		max_bytes -= AMDGPU_VM_RESERVED_VRAM;
 
-	/* bail out quickly if there's likely not enough VRAM for this BO */
 	mem_bytes = tbo->base.size;
-	if (atomic64_add_return(mem_bytes, &mgr->usage) > max_bytes) {
-		r = -ENOSPC;
-		goto error_sub;
-	}
-
 	if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
 		pages_per_node = ~0ul;
 		num_nodes = 1;
@@ -408,13 +404,17 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
 
 	node = kvmalloc(struct_size(node, mm_nodes, num_nodes),
 			GFP_KERNEL | __GFP_ZERO);
-	if (!node) {
-		r = -ENOMEM;
-		goto error_sub;
-	}
+	if (!node)
+		return -ENOMEM;
 
 	ttm_resource_init(tbo, place, &node->base);
 
+	/* bail out quickly if there's likely not enough VRAM for this BO */
+	if (ttm_resource_manager_usage(man) > max_bytes) {
+		r = -ENOSPC;
+		goto error_fini;
+	}
+
 	mode = DRM_MM_INSERT_BEST;
 	if (place->flags & TTM_PL_FLAG_TOPDOWN)
 		mode = DRM_MM_INSERT_HIGH;
@@ -472,11 +472,10 @@ error_free:
 	while (i--)
 		drm_mm_remove_node(&node->mm_nodes[i]);
 	spin_unlock(&mgr->lock);
+error_fini:
 	ttm_resource_fini(man, &node->base);
 	kvfree(node);
 
-error_sub:
-	atomic64_sub(mem_bytes, &mgr->usage);
 	return r;
 }
 
@@ -494,7 +493,7 @@ static void amdgpu_vram_mgr_del(struct ttm_resource_manager *man,
 	struct ttm_range_mgr_node *node = to_ttm_range_mgr_node(res);
 	struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
 	struct amdgpu_device *adev = to_amdgpu_device(mgr);
-	uint64_t usage = 0, vis_usage = 0;
+	uint64_t vis_usage = 0;
 	unsigned i, pages;
 
 	spin_lock(&mgr->lock);
@@ -503,13 +502,11 @@ static void amdgpu_vram_mgr_del(struct ttm_resource_manager *man,
 		struct drm_mm_node *mm = &node->mm_nodes[i];
 
 		drm_mm_remove_node(mm);
-		usage += mm->size << PAGE_SHIFT;
 		vis_usage += amdgpu_vram_mgr_vis_size(adev, mm);
 	}
 	amdgpu_vram_mgr_do_reserve(man);
 	spin_unlock(&mgr->lock);
 
-	atomic64_sub(usage, &mgr->usage);
 	atomic64_sub(vis_usage, &mgr->vis_usage);
 
 	ttm_resource_fini(man, res);
@@ -628,18 +625,6 @@ void amdgpu_vram_mgr_free_sgt(struct device *dev,
 }
 
 /**
- * amdgpu_vram_mgr_usage - how many bytes are used in this domain
- *
- * @mgr: amdgpu_vram_mgr pointer
- *
- * Returns how many bytes are used in this domain.
- */
-uint64_t amdgpu_vram_mgr_usage(struct amdgpu_vram_mgr *mgr)
-{
-	return atomic64_read(&mgr->usage);
-}
-
-/**
  * amdgpu_vram_mgr_vis_usage - how many bytes are used in the visible part
  *
  * @mgr: amdgpu_vram_mgr pointer
@@ -664,13 +649,12 @@ static void amdgpu_vram_mgr_debug(struct ttm_resource_manager *man,
 {
 	struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
 
+	drm_printf(printer, "  vis usage:%llu\n",
+		   amdgpu_vram_mgr_vis_usage(mgr));
+
 	spin_lock(&mgr->lock);
 	drm_mm_print(&mgr->mm, printer);
 	spin_unlock(&mgr->lock);
-
-	drm_printf(printer, "man size:%llu pages, ram usage:%lluMB, vis usage:%lluMB\n",
-		   man->size, amdgpu_vram_mgr_usage(mgr) >> 20,
-		   amdgpu_vram_mgr_vis_usage(mgr) >> 20);
 }
 
 static const struct ttm_resource_manager_func amdgpu_vram_mgr_func = {
@@ -692,11 +676,11 @@ int amdgpu_vram_mgr_init(struct amdgpu_device *adev)
 	struct ttm_resource_manager *man = &mgr->manager;
 
 	ttm_resource_manager_init(man, &adev->mman.bdev,
-				  adev->gmc.real_vram_size >> PAGE_SHIFT);
+				  adev->gmc.real_vram_size);
 
 	man->func = &amdgpu_vram_mgr_func;
 
-	drm_mm_init(&mgr->mm, 0, man->size);
+	drm_mm_init(&mgr->mm, 0, man->size >> PAGE_SHIFT);
 	spin_lock_init(&mgr->lock);
 	INIT_LIST_HEAD(&mgr->reservations_pending);
 	INIT_LIST_HEAD(&mgr->reserved_pages);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 77b65434ccc2..91817a31f3e1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -32,6 +32,8 @@
 #include "wafl/wafl2_4_0_0_smn.h"
 #include "wafl/wafl2_4_0_0_sh_mask.h"
 
+#include "amdgpu_reset.h"
+
 #define smnPCS_XGMI23_PCS_ERROR_STATUS   0x11a01210
 #define smnPCS_XGMI3X16_PCS_ERROR_STATUS 0x11a0020c
 #define smnPCS_GOPX1_PCS_ERROR_STATUS    0x12200210
@@ -227,6 +229,9 @@ static void amdgpu_xgmi_hive_release(struct kobject *kobj)
 	struct amdgpu_hive_info *hive = container_of(
 		kobj, struct amdgpu_hive_info, kobj);
 
+	amdgpu_reset_put_reset_domain(hive->reset_domain);
+	hive->reset_domain = NULL;
+
 	mutex_destroy(&hive->hive_lock);
 	kfree(hive);
 }
@@ -398,15 +403,35 @@ struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
 		goto pro_end;
 	}
 
+	/**
+	 * Avoid recreating reset domain when hive is reconstructed for the case
+	 * of reset the devices in the XGMI hive during probe for SRIOV
+	 * See https://www.spinics.net/lists/amd-gfx/msg58836.html
+	 */
+	if (adev->reset_domain->type != XGMI_HIVE) {
+		hive->reset_domain = amdgpu_reset_create_reset_domain(XGMI_HIVE, "amdgpu-reset-hive");
+			if (!hive->reset_domain) {
+				dev_err(adev->dev, "XGMI: failed initializing reset domain for xgmi hive\n");
+				ret = -ENOMEM;
+				kobject_put(&hive->kobj);
+				kfree(hive);
+				hive = NULL;
+				goto pro_end;
+			}
+	} else {
+		amdgpu_reset_get_reset_domain(adev->reset_domain);
+		hive->reset_domain = adev->reset_domain;
+	}
+
 	hive->hive_id = adev->gmc.xgmi.hive_id;
 	INIT_LIST_HEAD(&hive->device_list);
 	INIT_LIST_HEAD(&hive->node);
 	mutex_init(&hive->hive_lock);
-	atomic_set(&hive->in_reset, 0);
 	atomic_set(&hive->number_devices, 0);
 	task_barrier_init(&hive->tb);
 	hive->pstate = AMDGPU_XGMI_PSTATE_UNKNOWN;
 	hive->hi_req_gpu = NULL;
+
 	/*
 	 * hive pstate on boot is high in vega20 so we have to go to low
 	 * pstate on after boot.
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
index 0afca51c3c0c..b4a705545657 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
@@ -33,7 +33,6 @@ struct amdgpu_hive_info {
 	struct list_head node;
 	atomic_t number_devices;
 	struct mutex hive_lock;
-	atomic_t in_reset;
 	int hi_req_count;
 	struct amdgpu_device *hi_req_gpu;
 	struct task_barrier tb;
@@ -42,6 +41,8 @@ struct amdgpu_hive_info {
 		AMDGPU_XGMI_PSTATE_MAX_VEGA20,
 		AMDGPU_XGMI_PSTATE_UNKNOWN
 	} pstate;
+
+	struct amdgpu_reset_domain *reset_domain;
 };
 
 struct amdgpu_pcs_ras_field {
diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c
index 6fa2229b7229..1c5d9388ad0b 100644
--- a/drivers/gpu/drm/amd/amdgpu/atom.c
+++ b/drivers/gpu/drm/amd/amdgpu/atom.c
@@ -25,6 +25,8 @@
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <linux/string_helpers.h>
+
 #include <asm/unaligned.h>
 
 #include <drm/drm_util.h>
@@ -740,7 +742,7 @@ static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
 		break;
 	}
 	if (arg != ATOM_COND_ALWAYS)
-		SDEBUG("   taken: %s\n", execute ? "yes" : "no");
+		SDEBUG("   taken: %s\n", str_yes_no(execute));
 	SDEBUG("   target: 0x%04X\n", target);
 	if (execute) {
 		if (ctx->last_jump == (ctx->start + target)) {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index 5d5205870861..288fce7dc0ed 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -2798,6 +2798,8 @@ static int dce_v10_0_sw_init(void *handle)
 	adev_to_drm(adev)->mode_config.preferred_depth = 24;
 	adev_to_drm(adev)->mode_config.prefer_shadow = 1;
 
+	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
+
 	adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
 
 	r = amdgpu_display_modeset_create_props(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 4d812b22c54f..cbe5250b31cb 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -2916,6 +2916,8 @@ static int dce_v11_0_sw_init(void *handle)
 	adev_to_drm(adev)->mode_config.preferred_depth = 24;
 	adev_to_drm(adev)->mode_config.prefer_shadow = 1;
 
+	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
+
 	adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
 
 	r = amdgpu_display_modeset_create_props(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index b90bc2adf778..982855e6cf52 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -2674,6 +2674,7 @@ static int dce_v6_0_sw_init(void *handle)
 	adev_to_drm(adev)->mode_config.max_height = 16384;
 	adev_to_drm(adev)->mode_config.preferred_depth = 24;
 	adev_to_drm(adev)->mode_config.prefer_shadow = 1;
+	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
 	adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
 
 	r = amdgpu_display_modeset_create_props(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 7c1379b02f94..84440741c60b 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -2695,6 +2695,8 @@ static int dce_v8_0_sw_init(void *handle)
 	adev_to_drm(adev)->mode_config.preferred_depth = 24;
 	adev_to_drm(adev)->mode_config.prefer_shadow = 1;
 
+	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
+
 	adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
 
 	r = amdgpu_display_modeset_create_props(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index e7add2020d48..3dcd82b49481 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -48,6 +48,8 @@
 #include "athub_v2_0.h"
 #include "athub_v2_1.h"
 
+#include "amdgpu_reset.h"
+
 #if 0
 static const struct soc15_reg_golden golden_settings_navi10_hdp[] =
 {
@@ -328,7 +330,7 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 	 */
 	if (adev->gfx.kiq.ring.sched.ready &&
 	    (amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev)) &&
-	    down_read_trylock(&adev->reset_sem)) {
+	    down_read_trylock(&adev->reset_domain->sem)) {
 		struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
 		const unsigned eng = 17;
 		u32 inv_req = hub->vmhub_funcs->get_invalidate_req(vmid, flush_type);
@@ -338,7 +340,7 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 		amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
 				1 << vmid);
 
-		up_read(&adev->reset_sem);
+		up_read(&adev->reset_domain->sem);
 		return;
 	}
 
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 412e44af1608..df35f0252eea 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -62,6 +62,8 @@
 #include "amdgpu_ras.h"
 #include "amdgpu_xgmi.h"
 
+#include "amdgpu_reset.h"
+
 /* add these here since we already include dce12 headers and these are for DCN */
 #define mmHUBP0_DCSURF_PRI_VIEWPORT_DIMENSION                                                          0x055d
 #define mmHUBP0_DCSURF_PRI_VIEWPORT_DIMENSION_BASE_IDX                                                 2
@@ -787,13 +789,13 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
 	 */
 	if (adev->gfx.kiq.ring.sched.ready &&
 	    (amdgpu_sriov_runtime(adev) || !amdgpu_sriov_vf(adev)) &&
-	    down_read_trylock(&adev->reset_sem)) {
+	    down_read_trylock(&adev->reset_domain->sem)) {
 		uint32_t req = hub->vm_inv_eng0_req + hub->eng_distance * eng;
 		uint32_t ack = hub->vm_inv_eng0_ack + hub->eng_distance * eng;
 
 		amdgpu_virt_kiq_reg_write_reg_wait(adev, req, ack, inv_req,
 						   1 << vmid);
-		up_read(&adev->reset_sem);
+		up_read(&adev->reset_domain->sem);
 		return;
 	}
 
@@ -900,7 +902,7 @@ static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 	if (amdgpu_in_reset(adev))
 		return -EIO;
 
-	if (ring->sched.ready && down_read_trylock(&adev->reset_sem)) {
+	if (ring->sched.ready && down_read_trylock(&adev->reset_domain->sem)) {
 		/* Vega20+XGMI caches PTEs in TC and TLB. Add a
 		 * heavy-weight TLB flush (type 2), which flushes
 		 * both. Due to a race condition with concurrent
@@ -927,7 +929,7 @@ static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 		if (r) {
 			amdgpu_ring_undo(ring);
 			spin_unlock(&adev->gfx.kiq.ring_lock);
-			up_read(&adev->reset_sem);
+			up_read(&adev->reset_domain->sem);
 			return -ETIME;
 		}
 
@@ -936,10 +938,10 @@ static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 		r = amdgpu_fence_wait_polling(ring, seq, adev->usec_timeout);
 		if (r < 1) {
 			dev_err(adev->dev, "wait for kiq fence error: %ld.\n", r);
-			up_read(&adev->reset_sem);
+			up_read(&adev->reset_domain->sem);
 			return -ETIME;
 		}
-		up_read(&adev->reset_sem);
+		up_read(&adev->reset_domain->sem);
 		return 0;
 	}
 
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
index 56da5ab82987..b81acf59870c 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
@@ -32,6 +32,8 @@
 #include "soc15_common.h"
 #include "mxgpu_ai.h"
 
+#include "amdgpu_reset.h"
+
 static void xgpu_ai_mailbox_send_ack(struct amdgpu_device *adev)
 {
 	WREG8(AI_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2);
@@ -257,10 +259,10 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
 	 * otherwise the mailbox msg will be ruined/reseted by
 	 * the VF FLR.
 	 */
-	if (atomic_cmpxchg(&adev->in_gpu_reset, 0, 1) != 0)
+	if (atomic_cmpxchg(&adev->reset_domain->in_gpu_reset, 0, 1) != 0)
 		return;
 
-	down_write(&adev->reset_sem);
+	down_write(&adev->reset_domain->sem);
 
 	amdgpu_virt_fini_data_exchange(adev);
 
@@ -275,14 +277,14 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
 	} while (timeout > 1);
 
 flr_done:
-	atomic_set(&adev->in_gpu_reset, 0);
-	up_write(&adev->reset_sem);
+	atomic_set(&adev->reset_domain->in_gpu_reset, 0);
+	up_write(&adev->reset_domain->sem);
 
 	/* Trigger recovery for world switch failure if no TDR */
 	if (amdgpu_device_should_recover_gpu(adev)
 		&& (!amdgpu_device_has_job_running(adev) ||
 		adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_device_gpu_recover_imp(adev, NULL);
 }
 
 static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev,
@@ -307,8 +309,11 @@ static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev,
 
 	switch (event) {
 		case IDH_FLR_NOTIFICATION:
-		if (amdgpu_sriov_runtime(adev))
-			schedule_work(&adev->virt.flr_work);
+		if (amdgpu_sriov_runtime(adev) && !amdgpu_in_reset(adev))
+			WARN_ONCE(!amdgpu_reset_domain_schedule(adev->reset_domain,
+								&adev->virt.flr_work),
+				  "Failed to queue work! at %s",
+				  __func__);
 		break;
 		case IDH_QUERY_ALIVE:
 			xgpu_ai_mailbox_send_ack(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
index 477d0dde19c5..22c10b97ea81 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
@@ -31,6 +31,8 @@
 #include "soc15_common.h"
 #include "mxgpu_nv.h"
 
+#include "amdgpu_reset.h"
+
 static void xgpu_nv_mailbox_send_ack(struct amdgpu_device *adev)
 {
 	WREG8(NV_MAIBOX_CONTROL_RCV_OFFSET_BYTE, 2);
@@ -281,10 +283,10 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
 	 * otherwise the mailbox msg will be ruined/reseted by
 	 * the VF FLR.
 	 */
-	if (atomic_cmpxchg(&adev->in_gpu_reset, 0, 1) != 0)
+	if (atomic_cmpxchg(&adev->reset_domain->in_gpu_reset, 0, 1) != 0)
 		return;
 
-	down_write(&adev->reset_sem);
+	down_write(&adev->reset_domain->sem);
 
 	amdgpu_virt_fini_data_exchange(adev);
 
@@ -299,8 +301,8 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
 	} while (timeout > 1);
 
 flr_done:
-	atomic_set(&adev->in_gpu_reset, 0);
-	up_write(&adev->reset_sem);
+	atomic_set(&adev->reset_domain->in_gpu_reset, 0);
+	up_write(&adev->reset_domain->sem);
 
 	/* Trigger recovery for world switch failure if no TDR */
 	if (amdgpu_device_should_recover_gpu(adev)
@@ -309,7 +311,7 @@ flr_done:
 		adev->gfx_timeout == MAX_SCHEDULE_TIMEOUT ||
 		adev->compute_timeout == MAX_SCHEDULE_TIMEOUT ||
 		adev->video_timeout == MAX_SCHEDULE_TIMEOUT))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_device_gpu_recover_imp(adev, NULL);
 }
 
 static int xgpu_nv_set_mailbox_rcv_irq(struct amdgpu_device *adev,
@@ -337,8 +339,11 @@ static int xgpu_nv_mailbox_rcv_irq(struct amdgpu_device *adev,
 
 	switch (event) {
 	case IDH_FLR_NOTIFICATION:
-		if (amdgpu_sriov_runtime(adev))
-			schedule_work(&adev->virt.flr_work);
+		if (amdgpu_sriov_runtime(adev) && !amdgpu_in_reset(adev))
+			WARN_ONCE(!amdgpu_reset_domain_schedule(adev->reset_domain,
+				   &adev->virt.flr_work),
+				  "Failed to queue work! at %s",
+				  __func__);
 		break;
 		/* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
 		 * it byfar since that polling thread will handle it,
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
index a642c04cf17d..7b63d30b9b79 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
@@ -42,6 +42,8 @@
 #include "smu/smu_7_1_3_d.h"
 #include "mxgpu_vi.h"
 
+#include "amdgpu_reset.h"
+
 /* VI golden setting */
 static const u32 xgpu_fiji_mgcg_cgcg_init[] = {
 	mmRLC_CGTT_MGCG_OVERRIDE, 0xffffffff, 0xffffffff,
@@ -521,7 +523,7 @@ static void xgpu_vi_mailbox_flr_work(struct work_struct *work)
 
 	/* Trigger recovery due to world switch failure */
 	if (amdgpu_device_should_recover_gpu(adev))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_device_gpu_recover_imp(adev, NULL);
 }
 
 static int xgpu_vi_set_mailbox_rcv_irq(struct amdgpu_device *adev,
@@ -550,8 +552,11 @@ static int xgpu_vi_mailbox_rcv_irq(struct amdgpu_device *adev,
 		r = xgpu_vi_mailbox_rcv_msg(adev, IDH_FLR_NOTIFICATION);
 
 		/* only handle FLR_NOTIFY now */
-		if (!r)
-			schedule_work(&adev->virt.flr_work);
+		if (!r && !amdgpu_in_reset(adev))
+			WARN_ONCE(!amdgpu_reset_domain_schedule(adev->reset_domain,
+								&adev->virt.flr_work),
+				  "Failed to queue work! at %s",
+				  __func__);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 493be0c49777..b94d215fa5c5 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7899,6 +7899,9 @@ static int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
 	if (res)
 		return res;
 
+	if (modifiers == NULL)
+		adev_to_drm(dm->adev)->mode_config.fb_modifiers_not_supported = true;
+
 	res = drm_universal_plane_init(adev_to_drm(dm->adev), plane, possible_crtcs,
 				       &dm_plane_funcs, formats, num_formats,
 				       modifiers, plane->type, NULL);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index bdea177fae55..0e8c5e6b2a5b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -23,6 +23,7 @@
  *
  */
 
+#include <linux/string_helpers.h>
 #include <linux/uaccess.h>
 
 #include "dc.h"
@@ -49,11 +50,6 @@ struct dmub_debugfs_trace_entry {
 	uint32_t param1;
 };
 
-static inline const char *yesno(bool v)
-{
-	return v ? "yes" : "no";
-}
-
 /* parse_write_buffer_into_params - Helper function to parse debugfs write buffer into an array
  *
  * Function takes in attributes passed to debugfs write entry
@@ -857,12 +853,12 @@ static int psr_capability_show(struct seq_file *m, void *data)
 	if (!(link->connector_signal & SIGNAL_TYPE_EDP))
 		return -ENODEV;
 
-	seq_printf(m, "Sink support: %s", yesno(link->dpcd_caps.psr_caps.psr_version != 0));
+	seq_printf(m, "Sink support: %s", str_yes_no(link->dpcd_caps.psr_caps.psr_version != 0));
 	if (link->dpcd_caps.psr_caps.psr_version)
 		seq_printf(m, " [0x%02x]", link->dpcd_caps.psr_caps.psr_version);
 	seq_puts(m, "\n");
 
-	seq_printf(m, "Driver support: %s", yesno(link->psr_settings.psr_feature_enabled));
+	seq_printf(m, "Driver support: %s", str_yes_no(link->psr_settings.psr_feature_enabled));
 	if (link->psr_settings.psr_version)
 		seq_printf(m, " [0x%02x]", link->psr_settings.psr_version);
 	seq_puts(m, "\n");
@@ -1211,8 +1207,8 @@ static int dp_dsc_fec_support_show(struct seq_file *m, void *data)
 	drm_modeset_drop_locks(&ctx);
 	drm_modeset_acquire_fini(&ctx);
 
-	seq_printf(m, "FEC_Sink_Support: %s\n", yesno(is_fec_supported));
-	seq_printf(m, "DSC_Sink_Support: %s\n", yesno(is_dsc_supported));
+	seq_printf(m, "FEC_Sink_Support: %s\n", str_yes_no(is_fec_supported));
+	seq_printf(m, "DSC_Sink_Support: %s\n", str_yes_no(is_dsc_supported));
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index 8e3e98f13db4..4f9b0a9f13e3 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -273,6 +273,9 @@ static int __init armada_drm_init(void)
 {
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	ret = platform_driver_register(&armada_lcd_platform_driver);
 	if (ret)
 		return ret;
diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
index 65f172807a0d..13f496473b9e 100644
--- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
+++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
@@ -20,6 +20,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
 #include <drm/drm_vblank.h>
@@ -359,7 +360,7 @@ static struct platform_driver aspeed_gfx_platform_driver = {
 	},
 };
 
-module_platform_driver(aspeed_gfx_platform_driver);
+drm_module_platform_driver(aspeed_gfx_platform_driver);
 
 MODULE_AUTHOR("Joel Stanley <joel@jms.id.au>");
 MODULE_DESCRIPTION("ASPEED BMC DRM/KMS driver");
diff --git a/drivers/gpu/drm/ast/ast_dp501.c b/drivers/gpu/drm/ast/ast_dp501.c
index cd93c44f2662..204c926a18ea 100644
--- a/drivers/gpu/drm/ast/ast_dp501.c
+++ b/drivers/gpu/drm/ast/ast_dp501.c
@@ -272,64 +272,6 @@ static bool ast_launch_m68k(struct drm_device *dev)
 	return true;
 }
 
-u8 ast_get_dp501_max_clk(struct drm_device *dev)
-{
-	struct ast_private *ast = to_ast_private(dev);
-	u32 boot_address, offset, data;
-	u8 linkcap[4], linkrate, linklanes, maxclk = 0xff;
-	u32 *plinkcap;
-
-	if (ast->config_mode == ast_use_p2a) {
-		boot_address = get_fw_base(ast);
-
-		/* validate FW version */
-		offset = AST_DP501_GBL_VERSION;
-		data = ast_mindwm(ast, boot_address + offset);
-		if ((data & AST_DP501_FW_VERSION_MASK) != AST_DP501_FW_VERSION_1) /* version: 1x */
-			return maxclk;
-
-		/* Read Link Capability */
-		offset  = AST_DP501_LINKRATE;
-		plinkcap = (u32 *)linkcap;
-		*plinkcap  = ast_mindwm(ast, boot_address + offset);
-		if (linkcap[2] == 0) {
-			linkrate = linkcap[0];
-			linklanes = linkcap[1];
-			data = (linkrate == 0x0a) ? (90 * linklanes) : (54 * linklanes);
-			if (data > 0xff)
-				data = 0xff;
-			maxclk = (u8)data;
-		}
-	} else {
-		if (!ast->dp501_fw_buf)
-			return AST_DP501_DEFAULT_DCLK;	/* 1024x768 as default */
-
-		/* dummy read */
-		offset = 0x0000;
-		data = readl(ast->dp501_fw_buf + offset);
-
-		/* validate FW version */
-		offset = AST_DP501_GBL_VERSION;
-		data = readl(ast->dp501_fw_buf + offset);
-		if ((data & AST_DP501_FW_VERSION_MASK) != AST_DP501_FW_VERSION_1) /* version: 1x */
-			return maxclk;
-
-		/* Read Link Capability */
-		offset = AST_DP501_LINKRATE;
-		plinkcap = (u32 *)linkcap;
-		*plinkcap = readl(ast->dp501_fw_buf + offset);
-		if (linkcap[2] == 0) {
-			linkrate = linkcap[0];
-			linklanes = linkcap[1];
-			data = (linkrate == 0x0a) ? (90 * linklanes) : (54 * linklanes);
-			if (data > 0xff)
-				data = 0xff;
-			maxclk = (u8)data;
-		}
-	}
-	return maxclk;
-}
-
 bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata)
 {
 	struct ast_private *ast = to_ast_private(dev);
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 9c8d56b0a41b..a19315b2f7e5 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -69,7 +69,6 @@ enum ast_chip {
 enum ast_tx_chip {
 	AST_TX_NONE,
 	AST_TX_SIL164,
-	AST_TX_ITE66121,
 	AST_TX_DP501,
 };
 
@@ -130,15 +129,26 @@ struct ast_i2c_chan {
 	struct i2c_algo_bit_data bit;
 };
 
-struct ast_connector {
+struct ast_vga_connector {
 	struct drm_connector base;
 	struct ast_i2c_chan *i2c;
 };
 
-static inline struct ast_connector *
-to_ast_connector(struct drm_connector *connector)
+static inline struct ast_vga_connector *
+to_ast_vga_connector(struct drm_connector *connector)
 {
-	return container_of(connector, struct ast_connector, base);
+	return container_of(connector, struct ast_vga_connector, base);
+}
+
+struct ast_sil164_connector {
+	struct drm_connector base;
+	struct ast_i2c_chan *i2c;
+};
+
+static inline struct ast_sil164_connector *
+to_ast_sil164_connector(struct drm_connector *connector)
+{
+	return container_of(connector, struct ast_sil164_connector, base);
 }
 
 /*
@@ -161,8 +171,20 @@ struct ast_private {
 	struct drm_plane primary_plane;
 	struct ast_cursor_plane cursor_plane;
 	struct drm_crtc crtc;
-	struct drm_encoder encoder;
-	struct ast_connector connector;
+	union {
+		struct {
+			struct drm_encoder encoder;
+			struct ast_vga_connector vga_connector;
+		} vga;
+		struct {
+			struct drm_encoder encoder;
+			struct ast_sil164_connector sil164_connector;
+		} sil164;
+		struct {
+			struct drm_encoder encoder;
+			struct drm_connector connector;
+		} dp501;
+	} output;
 
 	bool support_wide_screen;
 	enum {
@@ -172,7 +194,6 @@ struct ast_private {
 	} config_mode;
 
 	enum ast_tx_chip tx_chip_type;
-	u8 dp501_maxclk;
 	u8 *dp501_fw_addr;
 	const struct firmware *dp501_fw;	/* dp501 fw */
 };
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 2c7115a4d81f..45b56b39ad47 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -40,6 +40,7 @@
 #include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_gem_vram_helper.h>
+#include <drm/drm_managed.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
@@ -1005,6 +1006,71 @@ static void ast_crtc_dpms(struct drm_crtc *crtc, int mode)
 	}
 }
 
+static enum drm_mode_status
+ast_crtc_helper_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode)
+{
+	struct ast_private *ast = to_ast_private(crtc->dev);
+	enum drm_mode_status status;
+	uint32_t jtemp;
+
+	if (ast->support_wide_screen) {
+		if ((mode->hdisplay == 1680) && (mode->vdisplay == 1050))
+			return MODE_OK;
+		if ((mode->hdisplay == 1280) && (mode->vdisplay == 800))
+			return MODE_OK;
+		if ((mode->hdisplay == 1440) && (mode->vdisplay == 900))
+			return MODE_OK;
+		if ((mode->hdisplay == 1360) && (mode->vdisplay == 768))
+			return MODE_OK;
+		if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
+			return MODE_OK;
+
+		if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
+		    (ast->chip == AST2300) || (ast->chip == AST2400) ||
+		    (ast->chip == AST2500)) {
+			if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
+				return MODE_OK;
+
+			if ((mode->hdisplay == 1920) && (mode->vdisplay == 1200)) {
+				jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
+				if (jtemp & 0x01)
+					return MODE_NOMODE;
+				else
+					return MODE_OK;
+			}
+		}
+	}
+
+	status = MODE_NOMODE;
+
+	switch (mode->hdisplay) {
+	case 640:
+		if (mode->vdisplay == 480)
+			status = MODE_OK;
+		break;
+	case 800:
+		if (mode->vdisplay == 600)
+			status = MODE_OK;
+		break;
+	case 1024:
+		if (mode->vdisplay == 768)
+			status = MODE_OK;
+		break;
+	case 1280:
+		if (mode->vdisplay == 1024)
+			status = MODE_OK;
+		break;
+	case 1600:
+		if (mode->vdisplay == 1200)
+			status = MODE_OK;
+		break;
+	default:
+		break;
+	}
+
+	return status;
+}
+
 static int ast_crtc_helper_atomic_check(struct drm_crtc *crtc,
 					struct drm_atomic_state *state)
 {
@@ -1107,6 +1173,7 @@ ast_crtc_helper_atomic_disable(struct drm_crtc *crtc,
 }
 
 static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
+	.mode_valid = ast_crtc_helper_mode_valid,
 	.atomic_check = ast_crtc_helper_atomic_check,
 	.atomic_flush = ast_crtc_helper_atomic_flush,
 	.atomic_enable = ast_crtc_helper_atomic_enable,
@@ -1187,128 +1254,229 @@ static int ast_crtc_init(struct drm_device *dev)
 }
 
 /*
- * Encoder
+ * VGA Connector
  */
 
-static int ast_encoder_init(struct drm_device *dev)
+static int ast_vga_connector_helper_get_modes(struct drm_connector *connector)
 {
-	struct ast_private *ast = to_ast_private(dev);
-	struct drm_encoder *encoder = &ast->encoder;
+	struct ast_vga_connector *ast_vga_connector = to_ast_vga_connector(connector);
+	struct edid *edid;
+	int count;
+
+	if (!ast_vga_connector->i2c)
+		goto err_drm_connector_update_edid_property;
+
+	edid = drm_get_edid(connector, &ast_vga_connector->i2c->adapter);
+	if (!edid)
+		goto err_drm_connector_update_edid_property;
+
+	count = drm_add_edid_modes(connector, edid);
+	kfree(edid);
+
+	return count;
+
+err_drm_connector_update_edid_property:
+	drm_connector_update_edid_property(connector, NULL);
+	return 0;
+}
+
+static const struct drm_connector_helper_funcs ast_vga_connector_helper_funcs = {
+	.get_modes = ast_vga_connector_helper_get_modes,
+};
+
+static const struct drm_connector_funcs ast_vga_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int ast_vga_connector_init(struct drm_device *dev,
+				  struct ast_vga_connector *ast_vga_connector)
+{
+	struct drm_connector *connector = &ast_vga_connector->base;
+	int ret;
+
+	ast_vga_connector->i2c = ast_i2c_create(dev);
+	if (!ast_vga_connector->i2c)
+		drm_err(dev, "failed to add ddc bus for connector\n");
+
+	if (ast_vga_connector->i2c)
+		ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
+						  DRM_MODE_CONNECTOR_VGA,
+						  &ast_vga_connector->i2c->adapter);
+	else
+		ret = drm_connector_init(dev, connector, &ast_vga_connector_funcs,
+					 DRM_MODE_CONNECTOR_VGA);
+	if (ret)
+		return ret;
+
+	drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+
+	return 0;
+}
+
+static int ast_vga_output_init(struct ast_private *ast)
+{
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.vga.encoder;
+	struct ast_vga_connector *ast_vga_connector = &ast->output.vga.vga_connector;
+	struct drm_connector *connector = &ast_vga_connector->base;
 	int ret;
 
 	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
 	if (ret)
 		return ret;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
-	encoder->possible_crtcs = 1;
+	ret = ast_vga_connector_init(dev, ast_vga_connector);
+	if (ret)
+		return ret;
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
 
 	return 0;
 }
 
 /*
- * Connector
+ * SIL164 Connector
  */
 
-static int ast_get_modes(struct drm_connector *connector)
+static int ast_sil164_connector_helper_get_modes(struct drm_connector *connector)
+{
+	struct ast_sil164_connector *ast_sil164_connector = to_ast_sil164_connector(connector);
+	struct edid *edid;
+	int count;
+
+	if (!ast_sil164_connector->i2c)
+		goto err_drm_connector_update_edid_property;
+
+	edid = drm_get_edid(connector, &ast_sil164_connector->i2c->adapter);
+	if (!edid)
+		goto err_drm_connector_update_edid_property;
+
+	count = drm_add_edid_modes(connector, edid);
+	kfree(edid);
+
+	return count;
+
+err_drm_connector_update_edid_property:
+	drm_connector_update_edid_property(connector, NULL);
+	return 0;
+}
+
+static const struct drm_connector_helper_funcs ast_sil164_connector_helper_funcs = {
+	.get_modes = ast_sil164_connector_helper_get_modes,
+};
+
+static const struct drm_connector_funcs ast_sil164_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int ast_sil164_connector_init(struct drm_device *dev,
+				     struct ast_sil164_connector *ast_sil164_connector)
 {
-	struct ast_connector *ast_connector = to_ast_connector(connector);
-	struct ast_private *ast = to_ast_private(connector->dev);
-	struct edid *edid = NULL;
-	bool flags = false;
+	struct drm_connector *connector = &ast_sil164_connector->base;
 	int ret;
 
-	if (ast->tx_chip_type == AST_TX_DP501) {
-		ast->dp501_maxclk = 0xff;
-		edid = kmalloc(128, GFP_KERNEL);
-		if (!edid)
-			return -ENOMEM;
+	ast_sil164_connector->i2c = ast_i2c_create(dev);
+	if (!ast_sil164_connector->i2c)
+		drm_err(dev, "failed to add ddc bus for connector\n");
 
-		flags = ast_dp501_read_edid(connector->dev, (u8 *)edid);
-		if (flags)
-			ast->dp501_maxclk = ast_get_dp501_max_clk(connector->dev);
-		else
-			kfree(edid);
-	}
-	if (!flags && ast_connector->i2c)
-		edid = drm_get_edid(connector, &ast_connector->i2c->adapter);
-	if (edid) {
-		drm_connector_update_edid_property(&ast_connector->base, edid);
-		ret = drm_add_edid_modes(connector, edid);
-		kfree(edid);
+	if (ast_sil164_connector->i2c)
+		ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
+						  DRM_MODE_CONNECTOR_DVII,
+						  &ast_sil164_connector->i2c->adapter);
+	else
+		ret = drm_connector_init(dev, connector, &ast_sil164_connector_funcs,
+					 DRM_MODE_CONNECTOR_DVII);
+	if (ret)
 		return ret;
-	}
-	drm_connector_update_edid_property(&ast_connector->base, NULL);
+
+	drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+
 	return 0;
 }
 
-static enum drm_mode_status ast_mode_valid(struct drm_connector *connector,
-			  struct drm_display_mode *mode)
+static int ast_sil164_output_init(struct ast_private *ast)
 {
-	struct ast_private *ast = to_ast_private(connector->dev);
-	int flags = MODE_NOMODE;
-	uint32_t jtemp;
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.sil164.encoder;
+	struct ast_sil164_connector *ast_sil164_connector = &ast->output.sil164.sil164_connector;
+	struct drm_connector *connector = &ast_sil164_connector->base;
+	int ret;
 
-	if (ast->support_wide_screen) {
-		if ((mode->hdisplay == 1680) && (mode->vdisplay == 1050))
-			return MODE_OK;
-		if ((mode->hdisplay == 1280) && (mode->vdisplay == 800))
-			return MODE_OK;
-		if ((mode->hdisplay == 1440) && (mode->vdisplay == 900))
-			return MODE_OK;
-		if ((mode->hdisplay == 1360) && (mode->vdisplay == 768))
-			return MODE_OK;
-		if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
-			return MODE_OK;
+	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
+	if (ret)
+		return ret;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
-		if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
-		    (ast->chip == AST2300) || (ast->chip == AST2400) ||
-		    (ast->chip == AST2500)) {
-			if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
-				return MODE_OK;
+	ret = ast_sil164_connector_init(dev, ast_sil164_connector);
+	if (ret)
+		return ret;
 
-			if ((mode->hdisplay == 1920) && (mode->vdisplay == 1200)) {
-				jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
-				if (jtemp & 0x01)
-					return MODE_NOMODE;
-				else
-					return MODE_OK;
-			}
-		}
-	}
-	switch (mode->hdisplay) {
-	case 640:
-		if (mode->vdisplay == 480)
-			flags = MODE_OK;
-		break;
-	case 800:
-		if (mode->vdisplay == 600)
-			flags = MODE_OK;
-		break;
-	case 1024:
-		if (mode->vdisplay == 768)
-			flags = MODE_OK;
-		break;
-	case 1280:
-		if (mode->vdisplay == 1024)
-			flags = MODE_OK;
-		break;
-	case 1600:
-		if (mode->vdisplay == 1200)
-			flags = MODE_OK;
-		break;
-	default:
-		return flags;
-	}
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
 
-	return flags;
+	return 0;
 }
 
-static const struct drm_connector_helper_funcs ast_connector_helper_funcs = {
-	.get_modes = ast_get_modes,
-	.mode_valid = ast_mode_valid,
+/*
+ * DP501 Connector
+ */
+
+static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector)
+{
+	void *edid;
+	bool succ;
+	int count;
+
+	edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
+	if (!edid)
+		goto err_drm_connector_update_edid_property;
+
+	succ = ast_dp501_read_edid(connector->dev, edid);
+	if (!succ)
+		goto err_kfree;
+
+	drm_connector_update_edid_property(connector, edid);
+	count = drm_add_edid_modes(connector, edid);
+	kfree(edid);
+
+	return count;
+
+err_kfree:
+	kfree(edid);
+err_drm_connector_update_edid_property:
+	drm_connector_update_edid_property(connector, NULL);
+	return 0;
+}
+
+static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = {
+	.get_modes = ast_dp501_connector_helper_get_modes,
 };
 
-static const struct drm_connector_funcs ast_connector_funcs = {
+static const struct drm_connector_funcs ast_dp501_connector_funcs = {
 	.reset = drm_atomic_helper_connector_reset,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = drm_connector_cleanup,
@@ -1316,33 +1484,45 @@ static const struct drm_connector_funcs ast_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int ast_connector_init(struct drm_device *dev)
+static int ast_dp501_connector_init(struct drm_device *dev, struct drm_connector *connector)
 {
-	struct ast_private *ast = to_ast_private(dev);
-	struct ast_connector *ast_connector = &ast->connector;
-	struct drm_connector *connector = &ast_connector->base;
-	struct drm_encoder *encoder = &ast->encoder;
-
-	ast_connector->i2c = ast_i2c_create(dev);
-	if (!ast_connector->i2c)
-		drm_err(dev, "failed to add ddc bus for connector\n");
+	int ret;
 
-	if (ast_connector->i2c)
-		drm_connector_init_with_ddc(dev, connector, &ast_connector_funcs,
-					    DRM_MODE_CONNECTOR_VGA,
-					    &ast_connector->i2c->adapter);
-	else
-		drm_connector_init(dev, connector, &ast_connector_funcs,
-				   DRM_MODE_CONNECTOR_VGA);
+	ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
+				 DRM_MODE_CONNECTOR_DisplayPort);
+	if (ret)
+		return ret;
 
-	drm_connector_helper_add(connector, &ast_connector_helper_funcs);
+	drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
 
 	connector->interlace_allowed = 0;
 	connector->doublescan_allowed = 0;
 
 	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 
-	drm_connector_attach_encoder(connector, encoder);
+	return 0;
+}
+
+static int ast_dp501_output_init(struct ast_private *ast)
+{
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.dp501.encoder;
+	struct drm_connector *connector = &ast->output.dp501.connector;
+	int ret;
+
+	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
+	if (ret)
+		return ret;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	ret = ast_dp501_connector_init(dev, connector);
+	if (ret)
+		return ret;
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
 
 	return 0;
 }
@@ -1351,8 +1531,7 @@ static int ast_connector_init(struct drm_device *dev)
  * Mode config
  */
 
-static const struct drm_mode_config_helper_funcs
-ast_mode_config_helper_funcs = {
+static const struct drm_mode_config_helper_funcs ast_mode_config_helper_funcs = {
 	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
 };
 
@@ -1404,8 +1583,20 @@ int ast_mode_config_init(struct ast_private *ast)
 		return ret;
 
 	ast_crtc_init(dev);
-	ast_encoder_init(dev);
-	ast_connector_init(dev);
+
+	switch (ast->tx_chip_type) {
+	case AST_TX_NONE:
+		ret = ast_vga_output_init(ast);
+		break;
+	case AST_TX_SIL164:
+		ret = ast_sil164_output_init(ast);
+		break;
+	case AST_TX_DP501:
+		ret = ast_dp501_output_init(ast);
+		break;
+	}
+	if (ret)
+		return ret;
 
 	drm_mode_config_reset(dev);
 
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index 1656d27b78b6..651e3c109360 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -22,6 +22,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -833,7 +834,7 @@ static struct platform_driver atmel_hlcdc_dc_platform_driver = {
 		.of_match_table = atmel_hlcdc_dc_of_match,
 	},
 };
-module_platform_driver(atmel_hlcdc_dc_platform_driver);
+drm_module_platform_driver(atmel_hlcdc_dc_platform_driver);
 
 MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>");
 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index fcd93f1aec90..c86f5be4dfe0 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -75,6 +75,14 @@ config DRM_DISPLAY_CONNECTOR
 	  on ARM-based platforms. Saying Y here when this driver is not needed
 	  will not cause any issue.
 
+config DRM_ITE_IT6505
+        tristate "ITE IT6505 DisplayPort bridge"
+        depends on OF
+        select DRM_KMS_HELPER
+        select EXTCON
+        help
+          ITE IT6505 DisplayPort bridge chip driver.
+
 config DRM_LONTIUM_LT8912B
 	tristate "Lontium LT8912B DSI/HDMI bridge"
 	depends on OF
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index f2c73683cfcb..425844c30495 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_CHIPONE_ICN6211) += chipone-icn6211.o
 obj-$(CONFIG_DRM_CHRONTEL_CH7033) += chrontel-ch7033.o
 obj-$(CONFIG_DRM_CROS_EC_ANX7688) += cros-ec-anx7688.o
 obj-$(CONFIG_DRM_DISPLAY_CONNECTOR) += display-connector.o
+obj-$(CONFIG_DRM_ITE_IT6505) += ite-it6505.o
 obj-$(CONFIG_DRM_LONTIUM_LT8912B) += lontium-lt8912b.o
 obj-$(CONFIG_DRM_LONTIUM_LT9611) += lontium-lt9611.o
 obj-$(CONFIG_DRM_LONTIUM_LT9611UXC) += lontium-lt9611uxc.o
diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig
index 319ba0df57be..cc0aa6572d98 100644
--- a/drivers/gpu/drm/bridge/analogix/Kconfig
+++ b/drivers/gpu/drm/bridge/analogix/Kconfig
@@ -32,6 +32,8 @@ config DRM_ANALOGIX_ANX7625
 	tristate "Analogix Anx7625 MIPI to DP interface support"
 	depends on DRM
 	depends on OF
+	select DRM_DP_AUX_BUS
+	select DRM_DP_HELPER
 	select DRM_MIPI_DSI
 	help
 	  ANX7625 is an ultra-low power 4K mobile HD transmitter
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 76662fce4ce6..633618bafd75 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -24,6 +24,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/dp/drm_dp_aux_bus.h>
 #include <drm/dp/drm_dp_helper.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_hdcp.h>
@@ -129,6 +130,23 @@ static int anx7625_reg_write(struct anx7625_data *ctx,
 	return ret;
 }
 
+static int anx7625_reg_block_write(struct anx7625_data *ctx,
+				   struct i2c_client *client,
+				   u8 reg_addr, u8 len, u8 *buf)
+{
+	int ret;
+	struct device *dev = &client->dev;
+
+	i2c_access_workaround(ctx, client);
+
+	ret = i2c_smbus_write_i2c_block_data(client, reg_addr, len, buf);
+	if (ret < 0)
+		dev_err(dev, "write i2c block failed id=%x\n:%x",
+			client->addr, reg_addr);
+
+	return ret;
+}
+
 static int anx7625_write_or(struct anx7625_data *ctx,
 			    struct i2c_client *client,
 			    u8 offset, u8 mask)
@@ -214,25 +232,28 @@ static int wait_aux_op_finish(struct anx7625_data *ctx)
 	return 0;
 }
 
-static int anx7625_aux_dpcd_read(struct anx7625_data *ctx,
-				 u32 address, u8 len, u8 *buf)
+static int anx7625_aux_trans(struct anx7625_data *ctx, u8 op, u32 address,
+			     u8 len, u8 *buf)
 {
 	struct device *dev = &ctx->client->dev;
 	int ret;
 	u8 addrh, addrm, addrl;
 	u8 cmd;
+	bool is_write = !(op & DP_AUX_I2C_READ);
 
-	if (len > MAX_DPCD_BUFFER_SIZE) {
+	if (len > DP_AUX_MAX_PAYLOAD_BYTES) {
 		dev_err(dev, "exceed aux buffer len.\n");
 		return -EINVAL;
 	}
 
+	if (!len)
+		return len;
+
 	addrl = address & 0xFF;
 	addrm = (address >> 8) & 0xFF;
 	addrh = (address >> 16) & 0xFF;
 
-	cmd = DPCD_CMD(len, DPCD_READ);
-	cmd = ((len - 1) << 4) | 0x09;
+	cmd = DPCD_CMD(len, op);
 
 	/* Set command and length */
 	ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
@@ -246,6 +267,9 @@ static int anx7625_aux_dpcd_read(struct anx7625_data *ctx,
 	ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
 				 AP_AUX_ADDR_19_16, addrh);
 
+	if (is_write)
+		ret |= anx7625_reg_block_write(ctx, ctx->i2c.rx_p0_client,
+					       AP_AUX_BUFF_START, len, buf);
 	/* Enable aux access */
 	ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
 				AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN);
@@ -255,14 +279,17 @@ static int anx7625_aux_dpcd_read(struct anx7625_data *ctx,
 		return -EIO;
 	}
 
-	usleep_range(2000, 2100);
-
 	ret = wait_aux_op_finish(ctx);
-	if (ret) {
+	if (ret < 0) {
 		dev_err(dev, "aux IO error: wait aux op finish.\n");
 		return ret;
 	}
 
+	/* Write done */
+	if (is_write)
+		return len;
+
+	/* Read done, read out dpcd data */
 	ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
 				     AP_AUX_BUFF_START, len, buf);
 	if (ret < 0) {
@@ -270,7 +297,7 @@ static int anx7625_aux_dpcd_read(struct anx7625_data *ctx,
 		return -EIO;
 	}
 
-	return 0;
+	return len;
 }
 
 static int anx7625_video_mute_control(struct anx7625_data *ctx,
@@ -845,7 +872,7 @@ static int anx7625_hdcp_enable(struct anx7625_data *ctx)
 	}
 
 	/* Read downstream capability */
-	anx7625_aux_dpcd_read(ctx, 0x68028, 1, &bcap);
+	anx7625_aux_trans(ctx, DP_AUX_NATIVE_READ, 0x68028, 1, &bcap);
 	if (!(bcap & 0x01)) {
 		pr_warn("downstream not support HDCP 1.4, cap(%x).\n", bcap);
 		return 0;
@@ -918,6 +945,7 @@ static void anx7625_dp_stop(struct anx7625_data *ctx)
 {
 	struct device *dev = &ctx->client->dev;
 	int ret;
+	u8 data;
 
 	DRM_DEV_DEBUG_DRIVER(dev, "stop dp output\n");
 
@@ -929,6 +957,11 @@ static void anx7625_dp_stop(struct anx7625_data *ctx)
 	ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 0x08, 0x7f);
 
 	ret |= anx7625_video_mute_control(ctx, 1);
+
+	dev_dbg(dev, "notify downstream enter into standby\n");
+	/* Downstream monitor enter into standby mode */
+	data = 2;
+	ret |= anx7625_aux_trans(ctx, DP_AUX_NATIVE_WRITE, 0x000600, 1, &data);
 	if (ret < 0)
 		DRM_DEV_ERROR(dev, "IO error : mute video fail\n");
 
@@ -1076,7 +1109,8 @@ static int segments_edid_read(struct anx7625_data *ctx,
 static int sp_tx_edid_read(struct anx7625_data *ctx,
 			   u8 *pedid_blocks_buf)
 {
-	u8 offset, edid_pos;
+	u8 offset;
+	int edid_pos;
 	int count, blocks_num;
 	u8 pblock_buf[MAX_DPCD_BUFFER_SIZE];
 	u8 i, j;
@@ -1627,11 +1661,56 @@ static int anx7625_parse_dt(struct device *dev,
 	return 0;
 }
 
+static bool anx7625_of_panel_on_aux_bus(struct device *dev)
+{
+	struct device_node *bus, *panel;
+
+	bus = of_get_child_by_name(dev->of_node, "aux-bus");
+	if (!bus)
+		return false;
+
+	panel = of_get_child_by_name(bus, "panel");
+	of_node_put(bus);
+	if (!panel)
+		return false;
+	of_node_put(panel);
+
+	return true;
+}
+
 static inline struct anx7625_data *bridge_to_anx7625(struct drm_bridge *bridge)
 {
 	return container_of(bridge, struct anx7625_data, bridge);
 }
 
+static ssize_t anx7625_aux_transfer(struct drm_dp_aux *aux,
+				    struct drm_dp_aux_msg *msg)
+{
+	struct anx7625_data *ctx = container_of(aux, struct anx7625_data, aux);
+	struct device *dev = &ctx->client->dev;
+	u8 request = msg->request & ~DP_AUX_I2C_MOT;
+	int ret = 0;
+
+	pm_runtime_get_sync(dev);
+	msg->reply = 0;
+	switch (request) {
+	case DP_AUX_NATIVE_WRITE:
+	case DP_AUX_I2C_WRITE:
+	case DP_AUX_NATIVE_READ:
+	case DP_AUX_I2C_READ:
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	if (!ret)
+		ret = anx7625_aux_trans(ctx, msg->request, msg->address,
+					msg->size, msg->buffer);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
 static struct edid *anx7625_get_edid(struct anx7625_data *ctx)
 {
 	struct device *dev = &ctx->client->dev;
@@ -2038,6 +2117,13 @@ static int anx7625_bridge_attach(struct drm_bridge *bridge,
 		return -ENODEV;
 	}
 
+	ctx->aux.drm_dev = bridge->dev;
+	err = drm_dp_aux_register(&ctx->aux);
+	if (err) {
+		dev_err(dev, "failed to register aux channel: %d\n", err);
+		return err;
+	}
+
 	if (ctx->pdata.panel_bridge) {
 		err = drm_bridge_attach(bridge->encoder,
 					ctx->pdata.panel_bridge,
@@ -2051,6 +2137,13 @@ static int anx7625_bridge_attach(struct drm_bridge *bridge,
 	return 0;
 }
 
+static void anx7625_bridge_detach(struct drm_bridge *bridge)
+{
+	struct anx7625_data *ctx = bridge_to_anx7625(bridge);
+
+	drm_dp_aux_unregister(&ctx->aux);
+}
+
 static enum drm_mode_status
 anx7625_bridge_mode_valid(struct drm_bridge *bridge,
 			  const struct drm_display_info *info,
@@ -2316,6 +2409,7 @@ static struct edid *anx7625_bridge_get_edid(struct drm_bridge *bridge,
 
 static const struct drm_bridge_funcs anx7625_bridge_funcs = {
 	.attach = anx7625_bridge_attach,
+	.detach = anx7625_bridge_detach,
 	.mode_valid = anx7625_bridge_mode_valid,
 	.mode_set = anx7625_bridge_mode_set,
 	.atomic_check = anx7625_bridge_atomic_check,
@@ -2473,6 +2567,12 @@ static const struct dev_pm_ops anx7625_pm_ops = {
 			   anx7625_runtime_pm_resume, NULL)
 };
 
+static void anx7625_runtime_disable(void *data)
+{
+	pm_runtime_dont_use_autosuspend(data);
+	pm_runtime_disable(data);
+}
+
 static int anx7625_i2c_probe(struct i2c_client *client,
 			     const struct i2c_device_id *id)
 {
@@ -2487,7 +2587,7 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	platform = kzalloc(sizeof(*platform), GFP_KERNEL);
+	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
 	if (!platform) {
 		DRM_DEV_ERROR(dev, "fail to allocate driver data\n");
 		return -ENOMEM;
@@ -2495,13 +2595,6 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 
 	pdata = &platform->pdata;
 
-	ret = anx7625_parse_dt(dev, pdata);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "fail to parse DT : %d\n", ret);
-		goto free_platform;
-	}
-
 	platform->client = client;
 	i2c_set_clientdata(client, platform);
 
@@ -2524,7 +2617,7 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 	if (!platform->hdcp_workqueue) {
 		dev_err(dev, "fail to create work queue\n");
 		ret = -ENOMEM;
-		goto free_platform;
+		return ret;
 	}
 
 	platform->pdata.intp_irq = client->irq;
@@ -2549,6 +2642,19 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 		}
 	}
 
+	platform->aux.name = "anx7625-aux";
+	platform->aux.dev = dev;
+	platform->aux.transfer = anx7625_aux_transfer;
+	drm_dp_aux_init(&platform->aux);
+	devm_of_dp_aux_populate_ep_devices(&platform->aux);
+
+	ret = anx7625_parse_dt(dev, pdata);
+	if (ret) {
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev, "fail to parse DT : %d\n", ret);
+		return ret;
+	}
+
 	if (anx7625_register_i2c_dummy_clients(platform, client) != 0) {
 		ret = -ENOMEM;
 		DRM_DEV_ERROR(dev, "fail to reserve I2C bus.\n");
@@ -2556,6 +2662,12 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 	}
 
 	pm_runtime_enable(dev);
+	pm_runtime_set_autosuspend_delay(dev, 1000);
+	pm_runtime_use_autosuspend(dev);
+	pm_suspend_ignore_children(dev, true);
+	ret = devm_add_action_or_reset(dev, anx7625_runtime_disable, dev);
+	if (ret)
+		return ret;
 
 	if (!platform->pdata.low_power_mode) {
 		anx7625_disable_pd_protocol(platform);
@@ -2568,7 +2680,8 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 
 	platform->bridge.funcs = &anx7625_bridge_funcs;
 	platform->bridge.of_node = client->dev.of_node;
-	platform->bridge.ops = DRM_BRIDGE_OP_EDID;
+	if (!anx7625_of_panel_on_aux_bus(&client->dev))
+		platform->bridge.ops |= DRM_BRIDGE_OP_EDID;
 	if (!platform->pdata.panel_bridge)
 		platform->bridge.ops |= DRM_BRIDGE_OP_HPD |
 					DRM_BRIDGE_OP_DETECT;
@@ -2609,9 +2722,6 @@ free_hdcp_wq:
 	if (platform->hdcp_workqueue)
 		destroy_workqueue(platform->hdcp_workqueue);
 
-free_platform:
-	kfree(platform);
-
 	return ret;
 }
 
@@ -2638,7 +2748,6 @@ static int anx7625_i2c_remove(struct i2c_client *client)
 	if (platform->pdata.audio_en)
 		anx7625_unregister_audio(platform);
 
-	kfree(platform);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h
index 56165f5b254c..edbbfe410a56 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.h
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.h
@@ -242,8 +242,6 @@
 
 #define AP_AUX_COMMAND	0x27  /* com+len */
 #define LENGTH_SHIFT	4
-#define DPCD_READ	0x09
-#define DPCD_WRITE	0x08
 #define DPCD_CMD(len, cmd)	((((len) - 1) << LENGTH_SHIFT) | (cmd))
 
 /* Bit 0&1: 3D video structure */
@@ -474,6 +472,7 @@ struct anx7625_data {
 	u8 bridge_attached;
 	struct drm_connector *connector;
 	struct mipi_dsi_device *dsi;
+	struct drm_dp_aux aux;
 };
 
 #endif  /* __ANX7625_H__ */
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
new file mode 100644
index 000000000000..fb16a176822d
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -0,0 +1,3352 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/extcon.h>
+#include <linux/fs.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+
+#include <crypto/hash.h>
+
+#include <drm/dp/drm_dp_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_hdcp.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
+#include <sound/hdmi-codec.h>
+
+#define REG_IC_VER 0x04
+
+#define REG_RESET_CTRL 0x05
+#define VIDEO_RESET BIT(0)
+#define AUDIO_RESET BIT(1)
+#define ALL_LOGIC_RESET BIT(2)
+#define AUX_RESET BIT(3)
+#define HDCP_RESET BIT(4)
+
+#define INT_STATUS_01 0x06
+#define INT_MASK_01 0x09
+#define INT_HPD_CHANGE 0
+#define INT_RECEIVE_HPD_IRQ 1
+#define INT_SCDT_CHANGE 2
+#define INT_HDCP_FAIL 3
+#define INT_HDCP_DONE 4
+#define BIT_OFFSET(x) (((x) - INT_STATUS_01) * BITS_PER_BYTE)
+#define BIT_INT_HPD INT_HPD_CHANGE
+#define BIT_INT_HPD_IRQ INT_RECEIVE_HPD_IRQ
+#define BIT_INT_SCDT INT_SCDT_CHANGE
+#define BIT_INT_HDCP_FAIL INT_HDCP_FAIL
+#define BIT_INT_HDCP_DONE INT_HDCP_DONE
+
+#define INT_STATUS_02 0x07
+#define INT_MASK_02 0x0A
+#define INT_AUX_CMD_FAIL 0
+#define INT_HDCP_KSV_CHECK 1
+#define INT_AUDIO_FIFO_ERROR 2
+#define BIT_INT_AUX_CMD_FAIL (BIT_OFFSET(0x07) + INT_AUX_CMD_FAIL)
+#define BIT_INT_HDCP_KSV_CHECK (BIT_OFFSET(0x07) + INT_HDCP_KSV_CHECK)
+#define BIT_INT_AUDIO_FIFO_ERROR (BIT_OFFSET(0x07) + INT_AUDIO_FIFO_ERROR)
+
+#define INT_STATUS_03 0x08
+#define INT_MASK_03 0x0B
+#define INT_LINK_TRAIN_FAIL 4
+#define INT_VID_FIFO_ERROR 5
+#define INT_IO_LATCH_FIFO_OVERFLOW 7
+#define BIT_INT_LINK_TRAIN_FAIL (BIT_OFFSET(0x08) + INT_LINK_TRAIN_FAIL)
+#define BIT_INT_VID_FIFO_ERROR (BIT_OFFSET(0x08) + INT_VID_FIFO_ERROR)
+#define BIT_INT_IO_FIFO_OVERFLOW (BIT_OFFSET(0x08) + INT_IO_LATCH_FIFO_OVERFLOW)
+
+#define REG_SYSTEM_STS 0x0D
+#define INT_STS BIT(0)
+#define HPD_STS BIT(1)
+#define VIDEO_STB BIT(2)
+
+#define REG_LINK_TRAIN_STS 0x0E
+#define LINK_STATE_CR BIT(2)
+#define LINK_STATE_EQ BIT(3)
+#define LINK_STATE_NORP BIT(4)
+
+#define REG_BANK_SEL 0x0F
+#define REG_CLK_CTRL0 0x10
+#define M_PCLK_DELAY 0x03
+
+#define REG_AUX_OPT 0x11
+#define AUX_AUTO_RST BIT(0)
+#define AUX_FIX_FREQ BIT(3)
+
+#define REG_DATA_CTRL0 0x12
+#define VIDEO_LATCH_EDGE BIT(4)
+#define ENABLE_PCLK_COUNTER BIT(7)
+
+#define REG_PCLK_COUNTER_VALUE 0x13
+
+#define REG_501_FIFO_CTRL 0x15
+#define RST_501_FIFO BIT(1)
+
+#define REG_TRAIN_CTRL0 0x16
+#define FORCE_LBR BIT(0)
+#define LANE_COUNT_MASK 0x06
+#define LANE_SWAP BIT(3)
+#define SPREAD_AMP_5 BIT(4)
+#define FORCE_CR_DONE BIT(5)
+#define FORCE_EQ_DONE BIT(6)
+
+#define REG_TRAIN_CTRL1 0x17
+#define AUTO_TRAIN BIT(0)
+#define MANUAL_TRAIN BIT(1)
+#define FORCE_RETRAIN BIT(2)
+
+#define REG_AUX_CTRL 0x23
+#define CLR_EDID_FIFO BIT(0)
+#define AUX_USER_MODE BIT(1)
+#define AUX_NO_SEGMENT_WR BIT(6)
+#define AUX_EN_FIFO_READ BIT(7)
+
+#define REG_AUX_ADR_0_7 0x24
+#define REG_AUX_ADR_8_15 0x25
+#define REG_AUX_ADR_16_19 0x26
+#define REG_AUX_OUT_DATA0 0x27
+
+#define REG_AUX_CMD_REQ 0x2B
+#define AUX_BUSY BIT(5)
+
+#define REG_AUX_DATA_0_7 0x2C
+#define REG_AUX_DATA_8_15 0x2D
+#define REG_AUX_DATA_16_23 0x2E
+#define REG_AUX_DATA_24_31 0x2F
+
+#define REG_AUX_DATA_FIFO 0x2F
+
+#define REG_AUX_ERROR_STS 0x9F
+#define M_AUX_REQ_FAIL 0x03
+
+#define REG_HDCP_CTRL1 0x38
+#define HDCP_CP_ENABLE BIT(0)
+
+#define REG_HDCP_TRIGGER 0x39
+#define HDCP_TRIGGER_START  BIT(0)
+#define HDCP_TRIGGER_CPIRQ  BIT(1)
+#define HDCP_TRIGGER_KSV_DONE  BIT(4)
+#define HDCP_TRIGGER_KSV_FAIL BIT(5)
+
+#define REG_HDCP_CTRL2 0x3A
+#define HDCP_AN_SEL BIT(0)
+#define HDCP_AN_GEN BIT(1)
+#define HDCP_HW_HPDIRQ_ACT BIT(2)
+#define HDCP_EN_M0_READ BIT(5)
+
+#define REG_M0_0_7 0x4C
+#define REG_AN_0_7 0x4C
+#define REG_SP_CTRL0 0x58
+#define REG_IP_CTRL1 0x59
+#define REG_IP_CTRL2 0x5A
+
+#define REG_LINK_DRV 0x5C
+#define DRV_HS BIT(1)
+
+#define REG_DRV_LN_DATA_SEL 0x5D
+
+#define REG_AUX 0x5E
+
+#define REG_VID_BUS_CTRL0 0x60
+#define IN_DDR BIT(2)
+#define DDR_CD (0x01 << 6)
+
+#define REG_VID_BUS_CTRL1 0x61
+#define TX_FIFO_RESET BIT(1)
+
+#define REG_INPUT_CTRL 0xA0
+#define INPUT_HSYNC_POL BIT(0)
+#define INPUT_VSYNC_POL BIT(2)
+#define INPUT_INTERLACED BIT(4)
+
+#define REG_INPUT_HTOTAL 0xA1
+#define REG_INPUT_HACTIVE_START 0xA3
+#define REG_INPUT_HACTIVE_WIDTH 0xA5
+#define REG_INPUT_HFRONT_PORCH 0xA7
+#define REG_INPUT_HSYNC_WIDTH 0xA9
+#define REG_INPUT_VTOTAL 0xAB
+#define REG_INPUT_VACTIVE_START 0xAD
+#define REG_INPUT_VACTIVE_WIDTH 0xAF
+#define REG_INPUT_VFRONT_PORCH 0xB1
+#define REG_INPUT_VSYNC_WIDTH 0xB3
+
+#define REG_AUDIO_SRC_CTRL 0xB8
+#define M_AUDIO_I2S_EN 0x0F
+#define EN_I2S0 BIT(0)
+#define EN_I2S1 BIT(1)
+#define EN_I2S2 BIT(2)
+#define EN_I2S3 BIT(3)
+#define AUDIO_FIFO_RESET BIT(7)
+
+#define REG_AUDIO_FMT 0xB9
+#define REG_AUDIO_FIFO_SEL 0xBA
+
+#define REG_AUDIO_CTRL0 0xBB
+#define AUDIO_FULL_PKT BIT(4)
+#define AUDIO_16B_BOUND BIT(5)
+
+#define REG_AUDIO_CTRL1 0xBC
+#define REG_AUDIO_INPUT_FREQ 0xBE
+
+#define REG_IEC958_STS0 0xBF
+#define REG_IEC958_STS1 0xC0
+#define REG_IEC958_STS2 0xC1
+#define REG_IEC958_STS3 0xC2
+#define REG_IEC958_STS4 0xC3
+
+#define REG_HPD_IRQ_TIME 0xC9
+#define REG_AUX_DEBUG_MODE 0xCA
+#define REG_AUX_OPT2 0xCB
+#define REG_HDCP_OPT 0xCE
+#define REG_USER_DRV_PRE 0xCF
+
+#define REG_DATA_MUTE_CTRL 0xD3
+#define ENABLE_ENHANCED_FRAME BIT(0)
+#define ENABLE_AUTO_VIDEO_FIFO_RESET BIT(1)
+#define EN_VID_MUTE BIT(4)
+#define EN_AUD_MUTE BIT(5)
+
+#define REG_TIME_STMP_CTRL 0xD4
+#define EN_ENHANCE_VID_STMP BIT(0)
+#define EN_ENHANCE_AUD_STMP BIT(2)
+#define M_STAMP_STEP 0x30
+#define EN_SSC_GAT BIT(6)
+
+#define REG_INFOFRAME_CTRL 0xE8
+#define EN_AVI_PKT BIT(0)
+#define EN_AUD_PKT BIT(1)
+#define EN_MPG_PKT BIT(2)
+#define EN_GEN_PKT BIT(3)
+#define EN_VID_TIME_STMP BIT(4)
+#define EN_AUD_TIME_STMP BIT(5)
+#define EN_VID_CTRL_PKT (EN_AVI_PKT | EN_VID_TIME_STMP)
+#define EN_AUD_CTRL_PKT (EN_AUD_PKT | EN_AUD_TIME_STMP)
+
+#define REG_AUDIO_N_0_7 0xDE
+#define REG_AUDIO_N_8_15 0xDF
+#define REG_AUDIO_N_16_23 0xE0
+
+#define REG_AVI_INFO_DB1 0xE9
+#define REG_AVI_INFO_DB2 0xEA
+#define REG_AVI_INFO_DB3 0xEB
+#define REG_AVI_INFO_DB4 0xEC
+#define REG_AVI_INFO_DB5 0xED
+#define REG_AVI_INFO_SUM 0xF6
+
+#define REG_AUD_INFOFRAM_DB1 0xF7
+#define REG_AUD_INFOFRAM_DB2 0xF8
+#define REG_AUD_INFOFRAM_DB3 0xF9
+#define REG_AUD_INFOFRAM_DB4 0xFA
+#define REG_AUD_INFOFRAM_SUM 0xFB
+
+/* the following six registers are in bank1 */
+#define REG_DRV_0_DB_800_MV 0x7E
+#define REG_PRE_0_DB_800_MV 0x7F
+#define REG_PRE_3P5_DB_800_MV 0x81
+#define REG_SSC_CTRL0 0x88
+#define REG_SSC_CTRL1 0x89
+#define REG_SSC_CTRL2 0x8A
+
+#define RBR DP_LINK_BW_1_62
+#define HBR DP_LINK_BW_2_7
+#define HBR2 DP_LINK_BW_5_4
+#define HBR3 DP_LINK_BW_8_1
+
+#define DPCD_V_1_1 0x11
+#define MISC_VERB 0xF0
+#define MISC_VERC 0x70
+#define I2S_INPUT_FORMAT_STANDARD 0
+#define I2S_INPUT_FORMAT_32BIT 1
+#define I2S_INPUT_LEFT_JUSTIFIED 0
+#define I2S_INPUT_RIGHT_JUSTIFIED 1
+#define I2S_DATA_1T_DELAY 0
+#define I2S_DATA_NO_DELAY 1
+#define I2S_WS_LEFT_CHANNEL 0
+#define I2S_WS_RIGHT_CHANNEL 1
+#define I2S_DATA_MSB_FIRST 0
+#define I2S_DATA_LSB_FIRST 1
+#define WORD_LENGTH_16BIT 0
+#define WORD_LENGTH_18BIT 1
+#define WORD_LENGTH_20BIT 2
+#define WORD_LENGTH_24BIT 3
+#define DEBUGFS_DIR_NAME "it6505-debugfs"
+#define READ_BUFFER_SIZE 200
+
+/* Vendor option */
+#define HDCP_DESIRED 1
+#define MAX_LANE_COUNT 4
+#define MAX_LINK_RATE HBR
+#define AUTO_TRAIN_RETRY 3
+#define MAX_HDCP_DOWN_STREAM_COUNT 10
+#define MAX_CR_LEVEL 0x03
+#define MAX_EQ_LEVEL 0x03
+#define AUX_WAIT_TIMEOUT_MS 15
+#define AUX_FIFO_MAX_SIZE 32
+#define PIXEL_CLK_DELAY 1
+#define PIXEL_CLK_INVERSE 0
+#define ADJUST_PHASE_THRESHOLD 80000
+#define DPI_PIXEL_CLK_MAX 95000
+#define HDCP_SHA1_FIFO_LEN (MAX_HDCP_DOWN_STREAM_COUNT * 5 + 10)
+#define DEFAULT_PWR_ON 0
+#define DEFAULT_DRV_HOLD 0
+
+#define AUDIO_SELECT I2S
+#define AUDIO_TYPE LPCM
+#define AUDIO_SAMPLE_RATE SAMPLE_RATE_48K
+#define AUDIO_CHANNEL_COUNT 2
+#define I2S_INPUT_FORMAT I2S_INPUT_FORMAT_32BIT
+#define I2S_JUSTIFIED I2S_INPUT_LEFT_JUSTIFIED
+#define I2S_DATA_DELAY I2S_DATA_1T_DELAY
+#define I2S_WS_CHANNEL I2S_WS_LEFT_CHANNEL
+#define I2S_DATA_SEQUENCE I2S_DATA_MSB_FIRST
+#define AUDIO_WORD_LENGTH WORD_LENGTH_24BIT
+
+enum aux_cmd_type {
+	CMD_AUX_NATIVE_READ = 0x0,
+	CMD_AUX_NATIVE_WRITE = 0x5,
+	CMD_AUX_I2C_EDID_READ = 0xB,
+};
+
+enum aux_cmd_reply {
+	REPLY_ACK,
+	REPLY_NACK,
+	REPLY_DEFER,
+};
+
+enum link_train_status {
+	LINK_IDLE,
+	LINK_BUSY,
+	LINK_OK,
+};
+
+enum hdcp_state {
+	HDCP_AUTH_IDLE,
+	HDCP_AUTH_GOING,
+	HDCP_AUTH_DONE,
+};
+
+struct it6505_platform_data {
+	struct regulator *pwr18;
+	struct regulator *ovdd;
+	struct gpio_desc *gpiod_reset;
+};
+
+enum it6505_audio_select {
+	I2S = 0,
+	SPDIF,
+};
+
+enum it6505_audio_sample_rate {
+	SAMPLE_RATE_24K = 0x6,
+	SAMPLE_RATE_32K = 0x3,
+	SAMPLE_RATE_48K = 0x2,
+	SAMPLE_RATE_96K = 0xA,
+	SAMPLE_RATE_192K = 0xE,
+	SAMPLE_RATE_44_1K = 0x0,
+	SAMPLE_RATE_88_2K = 0x8,
+	SAMPLE_RATE_176_4K = 0xC,
+};
+
+enum it6505_audio_type {
+	LPCM = 0,
+	NLPCM,
+	DSS,
+};
+
+struct it6505_audio_data {
+	enum it6505_audio_select select;
+	enum it6505_audio_sample_rate sample_rate;
+	enum it6505_audio_type type;
+	u8 word_length;
+	u8 channel_count;
+	u8 i2s_input_format;
+	u8 i2s_justified;
+	u8 i2s_data_delay;
+	u8 i2s_ws_channel;
+	u8 i2s_data_sequence;
+};
+
+struct it6505_audio_sample_rate_map {
+	enum it6505_audio_sample_rate rate;
+	int sample_rate_value;
+};
+
+struct it6505_drm_dp_link {
+	unsigned char revision;
+	unsigned int rate;
+	unsigned int num_lanes;
+	unsigned long capabilities;
+};
+
+struct debugfs_entries {
+	char *name;
+	const struct file_operations *fops;
+};
+
+struct it6505 {
+	struct drm_dp_aux aux;
+	struct drm_bridge bridge;
+	struct i2c_client *client;
+	struct it6505_drm_dp_link link;
+	struct it6505_platform_data pdata;
+	/*
+	 * Mutex protects extcon and interrupt functions from interfering
+	 * each other.
+	 */
+	struct mutex extcon_lock;
+	struct mutex mode_lock; /* used to bridge_detect */
+	struct mutex aux_lock; /* used to aux data transfers */
+	struct regmap *regmap;
+	struct drm_display_mode source_output_mode;
+	struct drm_display_mode video_info;
+	struct notifier_block event_nb;
+	struct extcon_dev *extcon;
+	struct work_struct extcon_wq;
+	enum drm_connector_status connector_status;
+	enum link_train_status link_state;
+	struct work_struct link_works;
+	u8 dpcd[DP_RECEIVER_CAP_SIZE];
+	u8 lane_count;
+	u8 link_rate_bw_code;
+	u8 sink_count;
+	bool step_train;
+	bool branch_device;
+	bool enable_ssc;
+	bool lane_swap_disabled;
+	bool lane_swap;
+	bool powered;
+	bool hpd_state;
+	u32 afe_setting;
+	enum hdcp_state hdcp_status;
+	struct delayed_work hdcp_work;
+	struct work_struct hdcp_wait_ksv_list;
+	struct completion wait_edid_complete;
+	u8 auto_train_retry;
+	bool hdcp_desired;
+	bool is_repeater;
+	u8 hdcp_down_stream_count;
+	u8 bksvs[DRM_HDCP_KSV_LEN];
+	u8 sha1_input[HDCP_SHA1_FIFO_LEN];
+	bool enable_enhanced_frame;
+	hdmi_codec_plugged_cb plugged_cb;
+	struct device *codec_dev;
+	struct delayed_work delayed_audio;
+	struct it6505_audio_data audio;
+	struct dentry *debugfs;
+
+	/* it6505 driver hold option */
+	bool enable_drv_hold;
+};
+
+struct it6505_step_train_para {
+	u8 voltage_swing[MAX_LANE_COUNT];
+	u8 pre_emphasis[MAX_LANE_COUNT];
+};
+
+/*
+ * Vendor option afe settings for different platforms
+ * 0: without FPC cable
+ * 1: with FPC cable
+ */
+
+static const u8 afe_setting_table[][3] = {
+	{0x82, 0x00, 0x45},
+	{0x93, 0x2A, 0x85}
+};
+
+static const struct it6505_audio_sample_rate_map audio_sample_rate_map[] = {
+	{SAMPLE_RATE_24K, 24000},
+	{SAMPLE_RATE_32K, 32000},
+	{SAMPLE_RATE_48K, 48000},
+	{SAMPLE_RATE_96K, 96000},
+	{SAMPLE_RATE_192K, 192000},
+	{SAMPLE_RATE_44_1K, 44100},
+	{SAMPLE_RATE_88_2K, 88200},
+	{SAMPLE_RATE_176_4K, 176400},
+};
+
+static const struct regmap_range it6505_bridge_volatile_ranges[] = {
+	{ .range_min = 0, .range_max = 0xFF },
+};
+
+static const struct regmap_access_table it6505_bridge_volatile_table = {
+	.yes_ranges = it6505_bridge_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(it6505_bridge_volatile_ranges),
+};
+
+static const struct regmap_config it6505_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.volatile_table = &it6505_bridge_volatile_table,
+	.cache_type = REGCACHE_NONE,
+};
+
+static int it6505_read(struct it6505 *it6505, unsigned int reg_addr)
+{
+	unsigned int value;
+	int err;
+	struct device *dev = &it6505->client->dev;
+
+	err = regmap_read(it6505->regmap, reg_addr, &value);
+	if (err < 0) {
+		dev_err(dev, "read failed reg[0x%x] err: %d", reg_addr, err);
+		return err;
+	}
+
+	return value;
+}
+
+static int it6505_write(struct it6505 *it6505, unsigned int reg_addr,
+			unsigned int reg_val)
+{
+	int err;
+	struct device *dev = &it6505->client->dev;
+
+	err = regmap_write(it6505->regmap, reg_addr, reg_val);
+
+	if (err < 0) {
+		dev_err(dev, "write failed reg[0x%x] = 0x%x err = %d",
+			reg_addr, reg_val, err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int it6505_set_bits(struct it6505 *it6505, unsigned int reg,
+			   unsigned int mask, unsigned int value)
+{
+	int err;
+	struct device *dev = &it6505->client->dev;
+
+	err = regmap_update_bits(it6505->regmap, reg, mask, value);
+	if (err < 0) {
+		dev_err(dev, "write reg[0x%x] = 0x%x mask = 0x%x failed err %d",
+			reg, value, mask, err);
+		return err;
+	}
+
+	return 0;
+}
+
+static void it6505_debug_print(struct it6505 *it6505, unsigned int reg,
+			       const char *prefix)
+{
+	struct device *dev = &it6505->client->dev;
+	int val;
+
+	if (likely(!(__drm_debug & DRM_UT_DRIVER)))
+		return;
+
+	val = it6505_read(it6505, reg);
+	if (val < 0)
+		DRM_DEV_DEBUG_DRIVER(dev, "%s reg[%02x] read error (%d)",
+				     prefix, reg, val);
+	else
+		DRM_DEV_DEBUG_DRIVER(dev, "%s reg[%02x] = 0x%02x", prefix, reg,
+				     val);
+}
+
+static int it6505_dpcd_read(struct it6505 *it6505, unsigned long offset)
+{
+	u8 value;
+	int ret;
+	struct device *dev = &it6505->client->dev;
+
+	ret = drm_dp_dpcd_readb(&it6505->aux, offset, &value);
+	if (ret < 0) {
+		dev_err(dev, "DPCD read failed [0x%lx] ret: %d", offset, ret);
+		return ret;
+	}
+	return value;
+}
+
+static int it6505_dpcd_write(struct it6505 *it6505, unsigned long offset,
+			     u8 datain)
+{
+	int ret;
+	struct device *dev = &it6505->client->dev;
+
+	ret = drm_dp_dpcd_writeb(&it6505->aux, offset, datain);
+	if (ret < 0) {
+		dev_err(dev, "DPCD write failed [0x%lx] ret: %d", offset, ret);
+		return ret;
+	}
+	return 0;
+}
+
+static int it6505_get_dpcd(struct it6505 *it6505, int offset, u8 *dpcd, int num)
+{
+	int ret;
+	struct device *dev = &it6505->client->dev;
+
+	ret = drm_dp_dpcd_read(&it6505->aux, offset, dpcd, num);
+
+	if (ret < 0)
+		return ret;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "ret = %d DPCD[0x%x] = 0x%*ph", ret, offset,
+			     num, dpcd);
+
+	return 0;
+}
+
+static void it6505_dump(struct it6505 *it6505)
+{
+	unsigned int i, j;
+	u8 regs[16];
+	struct device *dev = &it6505->client->dev;
+
+	for (i = 0; i <= 0xff; i += 16) {
+		for (j = 0; j < 16; j++)
+			regs[j] = it6505_read(it6505, i + j);
+
+		DRM_DEV_DEBUG_DRIVER(dev, "[0x%02x] = %16ph", i, regs);
+	}
+}
+
+static bool it6505_get_sink_hpd_status(struct it6505 *it6505)
+{
+	int reg_0d;
+
+	reg_0d = it6505_read(it6505, REG_SYSTEM_STS);
+
+	if (reg_0d < 0)
+		return false;
+
+	return reg_0d & HPD_STS;
+}
+
+static int it6505_read_word(struct it6505 *it6505, unsigned int reg)
+{
+	int val0, val1;
+
+	val0 = it6505_read(it6505, reg);
+	if (val0 < 0)
+		return val0;
+
+	val1 = it6505_read(it6505, reg + 1);
+	if (val1 < 0)
+		return val1;
+
+	return (val1 << 8) | val0;
+}
+
+static void it6505_calc_video_info(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	int hsync_pol, vsync_pol, interlaced;
+	int htotal, hdes, hdew, hfph, hsyncw;
+	int vtotal, vdes, vdew, vfph, vsyncw;
+	int rddata, i, pclk, sum = 0;
+
+	usleep_range(10000, 15000);
+	rddata = it6505_read(it6505, REG_INPUT_CTRL);
+	hsync_pol = rddata & INPUT_HSYNC_POL;
+	vsync_pol = (rddata & INPUT_VSYNC_POL) >> 2;
+	interlaced = (rddata & INPUT_INTERLACED) >> 4;
+
+	htotal = it6505_read_word(it6505, REG_INPUT_HTOTAL) & 0x1FFF;
+	hdes = it6505_read_word(it6505, REG_INPUT_HACTIVE_START) & 0x1FFF;
+	hdew = it6505_read_word(it6505, REG_INPUT_HACTIVE_WIDTH) & 0x1FFF;
+	hfph = it6505_read_word(it6505, REG_INPUT_HFRONT_PORCH) & 0x1FFF;
+	hsyncw = it6505_read_word(it6505, REG_INPUT_HSYNC_WIDTH) & 0x1FFF;
+
+	vtotal = it6505_read_word(it6505, REG_INPUT_VTOTAL) & 0xFFF;
+	vdes = it6505_read_word(it6505, REG_INPUT_VACTIVE_START) & 0xFFF;
+	vdew = it6505_read_word(it6505, REG_INPUT_VACTIVE_WIDTH) & 0xFFF;
+	vfph = it6505_read_word(it6505, REG_INPUT_VFRONT_PORCH) & 0xFFF;
+	vsyncw = it6505_read_word(it6505, REG_INPUT_VSYNC_WIDTH) & 0xFFF;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "hsync_pol:%d, vsync_pol:%d, interlaced:%d",
+			     hsync_pol, vsync_pol, interlaced);
+	DRM_DEV_DEBUG_DRIVER(dev, "hactive_start:%d, vactive_start:%d",
+			     hdes, vdes);
+
+	for (i = 0; i < 10; i++) {
+		it6505_set_bits(it6505, REG_DATA_CTRL0, ENABLE_PCLK_COUNTER,
+				ENABLE_PCLK_COUNTER);
+		usleep_range(10000, 15000);
+		it6505_set_bits(it6505, REG_DATA_CTRL0, ENABLE_PCLK_COUNTER,
+				0x00);
+		rddata = it6505_read_word(it6505, REG_PCLK_COUNTER_VALUE) &
+			 0xFFF;
+
+		sum += rddata;
+	}
+
+	if (sum == 0) {
+		DRM_DEV_DEBUG_DRIVER(dev, "calc video timing error");
+		return;
+	}
+
+	sum /= 10;
+	pclk = 13500 * 2048 / sum;
+	it6505->video_info.clock = pclk;
+	it6505->video_info.hdisplay = hdew;
+	it6505->video_info.hsync_start = hdew + hfph;
+	it6505->video_info.hsync_end = hdew + hfph + hsyncw;
+	it6505->video_info.htotal = htotal;
+	it6505->video_info.vdisplay = vdew;
+	it6505->video_info.vsync_start = vdew + vfph;
+	it6505->video_info.vsync_end = vdew + vfph + vsyncw;
+	it6505->video_info.vtotal = vtotal;
+
+	DRM_DEV_DEBUG_DRIVER(dev, DRM_MODE_FMT,
+			     DRM_MODE_ARG(&it6505->video_info));
+}
+
+static int it6505_drm_dp_link_probe(struct drm_dp_aux *aux,
+				    struct it6505_drm_dp_link *link)
+{
+	u8 values[3];
+	int err;
+
+	memset(link, 0, sizeof(*link));
+
+	err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values));
+	if (err < 0)
+		return err;
+
+	link->revision = values[0];
+	link->rate = drm_dp_bw_code_to_link_rate(values[1]);
+	link->num_lanes = values[2] & DP_MAX_LANE_COUNT_MASK;
+
+	if (values[2] & DP_ENHANCED_FRAME_CAP)
+		link->capabilities = DP_ENHANCED_FRAME_CAP;
+
+	return 0;
+}
+
+static int it6505_drm_dp_link_power_up(struct drm_dp_aux *aux,
+				       struct it6505_drm_dp_link *link)
+{
+	u8 value;
+	int err;
+
+	/* DP_SET_POWER register is only available on DPCD v1.1 and later */
+	if (link->revision < DPCD_V_1_1)
+		return 0;
+
+	err = drm_dp_dpcd_readb(aux, DP_SET_POWER, &value);
+	if (err < 0)
+		return err;
+
+	value &= ~DP_SET_POWER_MASK;
+	value |= DP_SET_POWER_D0;
+
+	err = drm_dp_dpcd_writeb(aux, DP_SET_POWER, value);
+	if (err < 0)
+		return err;
+
+	/*
+	 * According to the DP 1.1 specification, a "Sink Device must exit the
+	 * power saving state within 1 ms" (Section 2.5.3.1, Table 5-52, "Sink
+	 * Control Field" (register 0x600).
+	 */
+	usleep_range(1000, 2000);
+
+	return 0;
+}
+
+static void it6505_clear_int(struct it6505 *it6505)
+{
+	it6505_write(it6505, INT_STATUS_01, 0xFF);
+	it6505_write(it6505, INT_STATUS_02, 0xFF);
+	it6505_write(it6505, INT_STATUS_03, 0xFF);
+}
+
+static void it6505_int_mask_enable(struct it6505 *it6505)
+{
+	it6505_write(it6505, INT_MASK_01, BIT(INT_HPD_CHANGE) |
+		     BIT(INT_RECEIVE_HPD_IRQ) | BIT(INT_SCDT_CHANGE) |
+		     BIT(INT_HDCP_FAIL) | BIT(INT_HDCP_DONE));
+
+	it6505_write(it6505, INT_MASK_02, BIT(INT_AUX_CMD_FAIL) |
+		     BIT(INT_HDCP_KSV_CHECK) | BIT(INT_AUDIO_FIFO_ERROR));
+
+	it6505_write(it6505, INT_MASK_03, BIT(INT_LINK_TRAIN_FAIL) |
+		     BIT(INT_VID_FIFO_ERROR) | BIT(INT_IO_LATCH_FIFO_OVERFLOW));
+}
+
+static void it6505_int_mask_disable(struct it6505 *it6505)
+{
+	it6505_write(it6505, INT_MASK_01, 0x00);
+	it6505_write(it6505, INT_MASK_02, 0x00);
+	it6505_write(it6505, INT_MASK_03, 0x00);
+}
+
+static void it6505_lane_termination_on(struct it6505 *it6505)
+{
+	int regcf;
+
+	regcf = it6505_read(it6505, REG_USER_DRV_PRE);
+
+	if (regcf == MISC_VERB)
+		it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL, 0x80, 0x00);
+
+	if (regcf == MISC_VERC) {
+		if (it6505->lane_swap) {
+			switch (it6505->lane_count) {
+			case 1:
+			case 2:
+				it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL,
+						0x0C, 0x08);
+				break;
+			default:
+				it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL,
+						0x0C, 0x0C);
+				break;
+			}
+		} else {
+			switch (it6505->lane_count) {
+			case 1:
+			case 2:
+				it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL,
+						0x0C, 0x04);
+				break;
+			default:
+				it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL,
+						0x0C, 0x0C);
+				break;
+			}
+		}
+	}
+}
+
+static void it6505_lane_termination_off(struct it6505 *it6505)
+{
+	int regcf;
+
+	regcf = it6505_read(it6505, REG_USER_DRV_PRE);
+
+	if (regcf == MISC_VERB)
+		it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL, 0x80, 0x80);
+
+	if (regcf == MISC_VERC)
+		it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL, 0x0C, 0x00);
+}
+
+static void it6505_lane_power_on(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_LINK_DRV, 0xF1,
+			(it6505->lane_swap ?
+				 GENMASK(7, 8 - it6505->lane_count) :
+				 GENMASK(3 + it6505->lane_count, 4)) |
+				0x01);
+}
+
+static void it6505_lane_power_off(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_LINK_DRV, 0xF0, 0x00);
+}
+
+static void it6505_lane_off(struct it6505 *it6505)
+{
+	it6505_lane_power_off(it6505);
+	it6505_lane_termination_off(it6505);
+}
+
+static void it6505_aux_termination_on(struct it6505 *it6505)
+{
+	int regcf;
+
+	regcf = it6505_read(it6505, REG_USER_DRV_PRE);
+
+	if (regcf == MISC_VERB)
+		it6505_lane_termination_on(it6505);
+
+	if (regcf == MISC_VERC)
+		it6505_set_bits(it6505, REG_DRV_LN_DATA_SEL, 0x80, 0x80);
+}
+
+static void it6505_aux_power_on(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_AUX, 0x02, 0x02);
+}
+
+static void it6505_aux_on(struct it6505 *it6505)
+{
+	it6505_aux_power_on(it6505);
+	it6505_aux_termination_on(it6505);
+}
+
+static void it6505_aux_reset(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_RESET_CTRL, AUX_RESET, AUX_RESET);
+	it6505_set_bits(it6505, REG_RESET_CTRL, AUX_RESET, 0x00);
+}
+
+static void it6505_reset_logic(struct it6505 *it6505)
+{
+	regmap_write(it6505->regmap, REG_RESET_CTRL, ALL_LOGIC_RESET);
+	usleep_range(1000, 1500);
+}
+
+static bool it6505_aux_op_finished(struct it6505 *it6505)
+{
+	int reg2b = it6505_read(it6505, REG_AUX_CMD_REQ);
+
+	if (reg2b < 0)
+		return false;
+
+	return (reg2b & AUX_BUSY) == 0;
+}
+
+static int it6505_aux_wait(struct it6505 *it6505)
+{
+	int status;
+	unsigned long timeout;
+	struct device *dev = &it6505->client->dev;
+
+	timeout = jiffies + msecs_to_jiffies(AUX_WAIT_TIMEOUT_MS) + 1;
+
+	while (!it6505_aux_op_finished(it6505)) {
+		if (time_after(jiffies, timeout)) {
+			dev_err(dev, "Timed out waiting AUX to finish");
+			return -ETIMEDOUT;
+		}
+		usleep_range(1000, 2000);
+	}
+
+	status = it6505_read(it6505, REG_AUX_ERROR_STS);
+	if (status < 0) {
+		dev_err(dev, "Failed to read AUX channel: %d", status);
+		return status;
+	}
+
+	return 0;
+}
+
+static ssize_t it6505_aux_operation(struct it6505 *it6505,
+				    enum aux_cmd_type cmd,
+				    unsigned int address, u8 *buffer,
+				    size_t size, enum aux_cmd_reply *reply)
+{
+	int i, ret;
+	bool aux_write_check = false;
+
+	if (!it6505_get_sink_hpd_status(it6505))
+		return -EIO;
+
+	/* set AUX user mode */
+	it6505_set_bits(it6505, REG_AUX_CTRL, AUX_USER_MODE, AUX_USER_MODE);
+
+aux_op_start:
+	if (cmd == CMD_AUX_I2C_EDID_READ) {
+		/* AUX EDID FIFO has max length of AUX_FIFO_MAX_SIZE bytes. */
+		size = min_t(size_t, size, AUX_FIFO_MAX_SIZE);
+		/* Enable AUX FIFO read back and clear FIFO */
+		it6505_set_bits(it6505, REG_AUX_CTRL,
+				AUX_EN_FIFO_READ | CLR_EDID_FIFO,
+				AUX_EN_FIFO_READ | CLR_EDID_FIFO);
+
+		it6505_set_bits(it6505, REG_AUX_CTRL,
+				AUX_EN_FIFO_READ | CLR_EDID_FIFO,
+				AUX_EN_FIFO_READ);
+	} else {
+		/* The DP AUX transmit buffer has 4 bytes. */
+		size = min_t(size_t, size, 4);
+		it6505_set_bits(it6505, REG_AUX_CTRL, AUX_NO_SEGMENT_WR,
+				AUX_NO_SEGMENT_WR);
+	}
+
+	/* Start Address[7:0] */
+	it6505_write(it6505, REG_AUX_ADR_0_7, (address >> 0) & 0xFF);
+	/* Start Address[15:8] */
+	it6505_write(it6505, REG_AUX_ADR_8_15, (address >> 8) & 0xFF);
+	/* WriteNum[3:0]+StartAdr[19:16] */
+	it6505_write(it6505, REG_AUX_ADR_16_19,
+		     ((address >> 16) & 0x0F) | ((size - 1) << 4));
+
+	if (cmd == CMD_AUX_NATIVE_WRITE)
+		regmap_bulk_write(it6505->regmap, REG_AUX_OUT_DATA0, buffer,
+				  size);
+
+	/* Aux Fire */
+	it6505_write(it6505, REG_AUX_CMD_REQ, cmd);
+
+	ret = it6505_aux_wait(it6505);
+	if (ret < 0)
+		goto aux_op_err;
+
+	ret = it6505_read(it6505, REG_AUX_ERROR_STS);
+	if (ret < 0)
+		goto aux_op_err;
+
+	switch ((ret >> 6) & 0x3) {
+	case 0:
+		*reply = REPLY_ACK;
+		break;
+	case 1:
+		*reply = REPLY_DEFER;
+		ret = -EAGAIN;
+		goto aux_op_err;
+	case 2:
+		*reply = REPLY_NACK;
+		ret = -EIO;
+		goto aux_op_err;
+	case 3:
+		ret = -ETIMEDOUT;
+		goto aux_op_err;
+	}
+
+	/* Read back Native Write data */
+	if (cmd == CMD_AUX_NATIVE_WRITE) {
+		aux_write_check = true;
+		cmd = CMD_AUX_NATIVE_READ;
+		goto aux_op_start;
+	}
+
+	if (cmd == CMD_AUX_I2C_EDID_READ) {
+		for (i = 0; i < size; i++) {
+			ret = it6505_read(it6505, REG_AUX_DATA_FIFO);
+			if (ret < 0)
+				goto aux_op_err;
+			buffer[i] = ret;
+		}
+	} else {
+		for (i = 0; i < size; i++) {
+			ret = it6505_read(it6505, REG_AUX_DATA_0_7 + i);
+			if (ret < 0)
+				goto aux_op_err;
+
+			if (aux_write_check && buffer[size - 1 - i] != ret) {
+				ret = -EINVAL;
+				goto aux_op_err;
+			}
+
+			buffer[size - 1 - i] = ret;
+		}
+	}
+
+	ret = i;
+
+aux_op_err:
+	if (cmd == CMD_AUX_I2C_EDID_READ) {
+		/* clear AUX FIFO */
+		it6505_set_bits(it6505, REG_AUX_CTRL,
+				AUX_EN_FIFO_READ | CLR_EDID_FIFO,
+				AUX_EN_FIFO_READ | CLR_EDID_FIFO);
+		it6505_set_bits(it6505, REG_AUX_CTRL,
+				AUX_EN_FIFO_READ | CLR_EDID_FIFO, 0x00);
+	}
+
+	/* Leave AUX user mode */
+	it6505_set_bits(it6505, REG_AUX_CTRL, AUX_USER_MODE, 0);
+
+	return ret;
+}
+
+static ssize_t it6505_aux_do_transfer(struct it6505 *it6505,
+				      enum aux_cmd_type cmd,
+				      unsigned int address, u8 *buffer,
+				      size_t size, enum aux_cmd_reply *reply)
+{
+	int i, ret_size, ret = 0, request_size;
+
+	mutex_lock(&it6505->aux_lock);
+	for (i = 0; i < size; i += 4) {
+		request_size = min((int)size - i, 4);
+		ret_size = it6505_aux_operation(it6505, cmd, address + i,
+						buffer + i, request_size,
+						reply);
+		if (ret_size < 0) {
+			ret = ret_size;
+			goto aux_op_err;
+		}
+
+		ret += ret_size;
+	}
+
+aux_op_err:
+	mutex_unlock(&it6505->aux_lock);
+	return ret;
+}
+
+static ssize_t it6505_aux_transfer(struct drm_dp_aux *aux,
+				   struct drm_dp_aux_msg *msg)
+{
+	struct it6505 *it6505 = container_of(aux, struct it6505, aux);
+	u8 cmd;
+	bool is_i2c = !(msg->request & DP_AUX_NATIVE_WRITE);
+	int ret;
+	enum aux_cmd_reply reply;
+
+	/* IT6505 doesn't support arbitrary I2C read / write. */
+	if (is_i2c)
+		return -EINVAL;
+
+	switch (msg->request) {
+	case DP_AUX_NATIVE_READ:
+		cmd = CMD_AUX_NATIVE_READ;
+		break;
+	case DP_AUX_NATIVE_WRITE:
+		cmd = CMD_AUX_NATIVE_WRITE;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = it6505_aux_do_transfer(it6505, cmd, msg->address, msg->buffer,
+				     msg->size, &reply);
+	if (ret < 0)
+		return ret;
+
+	switch (reply) {
+	case REPLY_ACK:
+		msg->reply = DP_AUX_NATIVE_REPLY_ACK;
+		break;
+	case REPLY_NACK:
+		msg->reply = DP_AUX_NATIVE_REPLY_NACK;
+		break;
+	case REPLY_DEFER:
+		msg->reply = DP_AUX_NATIVE_REPLY_DEFER;
+		break;
+	}
+
+	return ret;
+}
+
+static int it6505_get_edid_block(void *data, u8 *buf, unsigned int block,
+				 size_t len)
+{
+	struct it6505 *it6505 = data;
+	struct device *dev = &it6505->client->dev;
+	enum aux_cmd_reply reply;
+	int offset, ret, aux_retry = 100;
+
+	it6505_aux_reset(it6505);
+	DRM_DEV_DEBUG_DRIVER(dev, "block number = %d", block);
+
+	for (offset = 0; offset < EDID_LENGTH;) {
+		ret = it6505_aux_do_transfer(it6505, CMD_AUX_I2C_EDID_READ,
+					     block * EDID_LENGTH + offset,
+					     buf + offset, 8, &reply);
+
+		if (ret < 0 && ret != -EAGAIN)
+			return ret;
+
+		switch (reply) {
+		case REPLY_ACK:
+			DRM_DEV_DEBUG_DRIVER(dev, "[0x%02x]: %8ph", offset,
+					     buf + offset);
+			offset += 8;
+			aux_retry = 100;
+			break;
+		case REPLY_NACK:
+			return -EIO;
+		case REPLY_DEFER:
+			msleep(20);
+			if (!(--aux_retry))
+				return -EIO;
+		}
+	}
+
+	return 0;
+}
+
+static void it6505_variable_config(struct it6505 *it6505)
+{
+	it6505->link_rate_bw_code = HBR;
+	it6505->lane_count = MAX_LANE_COUNT;
+	it6505->link_state = LINK_IDLE;
+	it6505->hdcp_desired = HDCP_DESIRED;
+	it6505->auto_train_retry = AUTO_TRAIN_RETRY;
+	it6505->audio.select = AUDIO_SELECT;
+	it6505->audio.sample_rate = AUDIO_SAMPLE_RATE;
+	it6505->audio.channel_count = AUDIO_CHANNEL_COUNT;
+	it6505->audio.type = AUDIO_TYPE;
+	it6505->audio.i2s_input_format = I2S_INPUT_FORMAT;
+	it6505->audio.i2s_justified = I2S_JUSTIFIED;
+	it6505->audio.i2s_data_delay = I2S_DATA_DELAY;
+	it6505->audio.i2s_ws_channel = I2S_WS_CHANNEL;
+	it6505->audio.i2s_data_sequence = I2S_DATA_SEQUENCE;
+	it6505->audio.word_length = AUDIO_WORD_LENGTH;
+	memset(it6505->sha1_input, 0, sizeof(it6505->sha1_input));
+	memset(it6505->bksvs, 0, sizeof(it6505->bksvs));
+}
+
+static int it6505_send_video_infoframe(struct it6505 *it6505,
+				       struct hdmi_avi_infoframe *frame)
+{
+	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
+	int err;
+	struct device *dev = &it6505->client->dev;
+
+	err = hdmi_avi_infoframe_pack(frame, buffer, sizeof(buffer));
+	if (err < 0) {
+		dev_err(dev, "Failed to pack AVI infoframe: %d", err);
+		return err;
+	}
+
+	err = it6505_set_bits(it6505, REG_INFOFRAME_CTRL, EN_AVI_PKT, 0x00);
+	if (err)
+		return err;
+
+	err = regmap_bulk_write(it6505->regmap, REG_AVI_INFO_DB1,
+				buffer + HDMI_INFOFRAME_HEADER_SIZE,
+				frame->length);
+	if (err)
+		return err;
+
+	err = it6505_set_bits(it6505, REG_INFOFRAME_CTRL, EN_AVI_PKT,
+			      EN_AVI_PKT);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static void it6505_get_extcon_property(struct it6505 *it6505)
+{
+	int err;
+	union extcon_property_value property;
+	struct device *dev = &it6505->client->dev;
+
+	if (it6505->extcon && !it6505->lane_swap_disabled) {
+		err = extcon_get_property(it6505->extcon, EXTCON_DISP_DP,
+					  EXTCON_PROP_USB_TYPEC_POLARITY,
+					  &property);
+		if (err) {
+			dev_err(dev, "get property fail!");
+			return;
+		}
+		it6505->lane_swap = property.intval;
+	}
+}
+
+static void it6505_clk_phase_adjustment(struct it6505 *it6505,
+					const struct drm_display_mode *mode)
+{
+	int clock = mode->clock;
+
+	it6505_set_bits(it6505, REG_CLK_CTRL0, M_PCLK_DELAY,
+			clock < ADJUST_PHASE_THRESHOLD ? PIXEL_CLK_DELAY : 0);
+	it6505_set_bits(it6505, REG_DATA_CTRL0, VIDEO_LATCH_EDGE,
+			PIXEL_CLK_INVERSE << 4);
+}
+
+static void it6505_link_reset_step_train(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_TRAIN_CTRL0,
+			FORCE_CR_DONE | FORCE_EQ_DONE, 0x00);
+	it6505_dpcd_write(it6505, DP_TRAINING_PATTERN_SET,
+			  DP_TRAINING_PATTERN_DISABLE);
+}
+
+static void it6505_init(struct it6505 *it6505)
+{
+	it6505_write(it6505, REG_AUX_OPT, AUX_AUTO_RST | AUX_FIX_FREQ);
+	it6505_write(it6505, REG_AUX_CTRL, AUX_NO_SEGMENT_WR);
+	it6505_write(it6505, REG_HDCP_CTRL2, HDCP_AN_SEL | HDCP_HW_HPDIRQ_ACT);
+	it6505_write(it6505, REG_VID_BUS_CTRL0, IN_DDR | DDR_CD);
+	it6505_write(it6505, REG_VID_BUS_CTRL1, 0x01);
+	it6505_write(it6505, REG_AUDIO_CTRL0, AUDIO_16B_BOUND);
+
+	/* chip internal setting, don't modify */
+	it6505_write(it6505, REG_HPD_IRQ_TIME, 0xF5);
+	it6505_write(it6505, REG_AUX_DEBUG_MODE, 0x4D);
+	it6505_write(it6505, REG_AUX_OPT2, 0x17);
+	it6505_write(it6505, REG_HDCP_OPT, 0x60);
+	it6505_write(it6505, REG_DATA_MUTE_CTRL,
+		     EN_VID_MUTE | EN_AUD_MUTE | ENABLE_AUTO_VIDEO_FIFO_RESET);
+	it6505_write(it6505, REG_TIME_STMP_CTRL,
+		     EN_SSC_GAT | EN_ENHANCE_VID_STMP | EN_ENHANCE_AUD_STMP);
+	it6505_write(it6505, REG_INFOFRAME_CTRL, 0x00);
+	it6505_write(it6505, REG_BANK_SEL, 0x01);
+	it6505_write(it6505, REG_DRV_0_DB_800_MV,
+		     afe_setting_table[it6505->afe_setting][0]);
+	it6505_write(it6505, REG_PRE_0_DB_800_MV,
+		     afe_setting_table[it6505->afe_setting][1]);
+	it6505_write(it6505, REG_PRE_3P5_DB_800_MV,
+		     afe_setting_table[it6505->afe_setting][2]);
+	it6505_write(it6505, REG_SSC_CTRL0, 0x9E);
+	it6505_write(it6505, REG_SSC_CTRL1, 0x1C);
+	it6505_write(it6505, REG_SSC_CTRL2, 0x42);
+	it6505_write(it6505, REG_BANK_SEL, 0x00);
+}
+
+static void it6505_video_disable(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_DATA_MUTE_CTRL, EN_VID_MUTE, EN_VID_MUTE);
+	it6505_set_bits(it6505, REG_INFOFRAME_CTRL, EN_VID_CTRL_PKT, 0x00);
+	it6505_set_bits(it6505, REG_RESET_CTRL, VIDEO_RESET, VIDEO_RESET);
+}
+
+static void it6505_video_reset(struct it6505 *it6505)
+{
+	it6505_link_reset_step_train(it6505);
+	it6505_set_bits(it6505, REG_DATA_MUTE_CTRL, EN_VID_MUTE, EN_VID_MUTE);
+	it6505_set_bits(it6505, REG_INFOFRAME_CTRL, EN_VID_CTRL_PKT, 0x00);
+	it6505_set_bits(it6505, REG_RESET_CTRL, VIDEO_RESET, VIDEO_RESET);
+	it6505_set_bits(it6505, REG_501_FIFO_CTRL, RST_501_FIFO, RST_501_FIFO);
+	it6505_set_bits(it6505, REG_501_FIFO_CTRL, RST_501_FIFO, 0x00);
+	it6505_set_bits(it6505, REG_RESET_CTRL, VIDEO_RESET, 0x00);
+}
+
+static void it6505_update_video_parameter(struct it6505 *it6505,
+					  const struct drm_display_mode *mode)
+{
+	it6505_clk_phase_adjustment(it6505, mode);
+	it6505_video_disable(it6505);
+}
+
+static bool it6505_audio_input(struct it6505 *it6505)
+{
+	int reg05, regbe;
+
+	reg05 = it6505_read(it6505, REG_RESET_CTRL);
+	it6505_set_bits(it6505, REG_RESET_CTRL, AUDIO_RESET, 0x00);
+	usleep_range(3000, 4000);
+	regbe = it6505_read(it6505, REG_AUDIO_INPUT_FREQ);
+	it6505_write(it6505, REG_RESET_CTRL, reg05);
+
+	return regbe != 0xFF;
+}
+
+static void it6505_setup_audio_channel_status(struct it6505 *it6505)
+{
+	enum it6505_audio_sample_rate sample_rate = it6505->audio.sample_rate;
+	u8 audio_word_length_map[] = { 0x02, 0x04, 0x03, 0x0B };
+
+	/* Channel Status */
+	it6505_write(it6505, REG_IEC958_STS0, it6505->audio.type << 1);
+	it6505_write(it6505, REG_IEC958_STS1, 0x00);
+	it6505_write(it6505, REG_IEC958_STS2, 0x00);
+	it6505_write(it6505, REG_IEC958_STS3, sample_rate);
+	it6505_write(it6505, REG_IEC958_STS4, (~sample_rate << 4) |
+		     audio_word_length_map[it6505->audio.word_length]);
+}
+
+static void it6505_setup_audio_format(struct it6505 *it6505)
+{
+	/* I2S MODE */
+	it6505_write(it6505, REG_AUDIO_FMT,
+		     (it6505->audio.word_length << 5) |
+		     (it6505->audio.i2s_data_sequence << 4) |
+		     (it6505->audio.i2s_ws_channel << 3) |
+		     (it6505->audio.i2s_data_delay << 2) |
+		     (it6505->audio.i2s_justified << 1) |
+		     it6505->audio.i2s_input_format);
+	if (it6505->audio.select == SPDIF) {
+		it6505_write(it6505, REG_AUDIO_FIFO_SEL, 0x00);
+		/* 0x30 = 128*FS */
+		it6505_set_bits(it6505, REG_AUX_OPT, 0xF0, 0x30);
+	} else {
+		it6505_write(it6505, REG_AUDIO_FIFO_SEL, 0xE4);
+	}
+
+	it6505_write(it6505, REG_AUDIO_CTRL0, 0x20);
+	it6505_write(it6505, REG_AUDIO_CTRL1, 0x00);
+}
+
+static void it6505_enable_audio_source(struct it6505 *it6505)
+{
+	unsigned int audio_source_count;
+
+	audio_source_count = BIT(DIV_ROUND_UP(it6505->audio.channel_count, 2))
+				 - 1;
+
+	audio_source_count |= it6505->audio.select << 4;
+
+	it6505_write(it6505, REG_AUDIO_SRC_CTRL, audio_source_count);
+}
+
+static void it6505_enable_audio_infoframe(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	u8 audio_info_ca[] = { 0x00, 0x00, 0x01, 0x03, 0x07, 0x0B, 0x0F, 0x1F };
+
+	DRM_DEV_DEBUG_DRIVER(dev, "infoframe channel_allocation:0x%02x",
+			     audio_info_ca[it6505->audio.channel_count - 1]);
+
+	it6505_write(it6505, REG_AUD_INFOFRAM_DB1, it6505->audio.channel_count
+		     - 1);
+	it6505_write(it6505, REG_AUD_INFOFRAM_DB2, 0x00);
+	it6505_write(it6505, REG_AUD_INFOFRAM_DB3,
+		     audio_info_ca[it6505->audio.channel_count - 1]);
+	it6505_write(it6505, REG_AUD_INFOFRAM_DB4, 0x00);
+	it6505_write(it6505, REG_AUD_INFOFRAM_SUM, 0x00);
+
+	/* Enable Audio InfoFrame */
+	it6505_set_bits(it6505, REG_INFOFRAME_CTRL, EN_AUD_CTRL_PKT,
+			EN_AUD_CTRL_PKT);
+}
+
+static void it6505_disable_audio(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_DATA_MUTE_CTRL, EN_AUD_MUTE, EN_AUD_MUTE);
+	it6505_set_bits(it6505, REG_AUDIO_SRC_CTRL, M_AUDIO_I2S_EN, 0x00);
+	it6505_set_bits(it6505, REG_INFOFRAME_CTRL, EN_AUD_CTRL_PKT, 0x00);
+	it6505_set_bits(it6505, REG_RESET_CTRL, AUDIO_RESET, AUDIO_RESET);
+}
+
+static void it6505_enable_audio(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	int regbe;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "start");
+	it6505_disable_audio(it6505);
+
+	it6505_setup_audio_channel_status(it6505);
+	it6505_setup_audio_format(it6505);
+	it6505_enable_audio_source(it6505);
+	it6505_enable_audio_infoframe(it6505);
+
+	it6505_write(it6505, REG_AUDIO_N_0_7, 0x00);
+	it6505_write(it6505, REG_AUDIO_N_8_15, 0x80);
+	it6505_write(it6505, REG_AUDIO_N_16_23, 0x00);
+
+	it6505_set_bits(it6505, REG_AUDIO_SRC_CTRL, AUDIO_FIFO_RESET,
+			AUDIO_FIFO_RESET);
+	it6505_set_bits(it6505, REG_AUDIO_SRC_CTRL, AUDIO_FIFO_RESET, 0x00);
+	it6505_set_bits(it6505, REG_RESET_CTRL, AUDIO_RESET, 0x00);
+	regbe = it6505_read(it6505, REG_AUDIO_INPUT_FREQ);
+	DRM_DEV_DEBUG_DRIVER(dev, "regbe:0x%02x audio input fs: %d.%d kHz",
+			     regbe, 6750 / regbe, (6750 % regbe) * 10 / regbe);
+	it6505_set_bits(it6505, REG_DATA_MUTE_CTRL, EN_AUD_MUTE, 0x00);
+}
+
+static bool it6505_use_step_train_check(struct it6505 *it6505)
+{
+	if (it6505->link.revision >= 0x12)
+		return it6505->dpcd[DP_TRAINING_AUX_RD_INTERVAL] >= 0x01;
+
+	return true;
+}
+
+static void it6505_parse_link_capabilities(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	struct it6505_drm_dp_link *link = &it6505->link;
+	int bcaps;
+
+	if (it6505->dpcd[0] == 0) {
+		it6505_aux_on(it6505);
+		it6505_get_dpcd(it6505, DP_DPCD_REV, it6505->dpcd,
+				ARRAY_SIZE(it6505->dpcd));
+	}
+
+	DRM_DEV_DEBUG_DRIVER(dev, "DPCD Rev.: %d.%d",
+			     link->revision >> 4, link->revision & 0x0F);
+
+	DRM_DEV_DEBUG_DRIVER(dev, "Sink max link rate: %d.%02d Gbps per lane",
+			     link->rate / 100000, link->rate / 1000 % 100);
+
+	it6505->link_rate_bw_code = drm_dp_link_rate_to_bw_code(link->rate);
+	DRM_DEV_DEBUG_DRIVER(dev, "link rate bw code:0x%02x",
+			     it6505->link_rate_bw_code);
+	it6505->link_rate_bw_code = min_t(int, it6505->link_rate_bw_code,
+					  MAX_LINK_RATE);
+
+	it6505->lane_count = link->num_lanes;
+	DRM_DEV_DEBUG_DRIVER(dev, "Sink support %d lanes training",
+			     it6505->lane_count);
+	it6505->lane_count = min_t(int, it6505->lane_count, MAX_LANE_COUNT);
+
+	it6505->branch_device = drm_dp_is_branch(it6505->dpcd);
+	DRM_DEV_DEBUG_DRIVER(dev, "Sink %sbranch device",
+			     it6505->branch_device ? "" : "Not ");
+
+	it6505->enable_enhanced_frame = link->capabilities;
+	DRM_DEV_DEBUG_DRIVER(dev, "Sink %sSupport Enhanced Framing",
+			     it6505->enable_enhanced_frame ? "" : "Not ");
+
+	it6505->enable_ssc = (it6505->dpcd[DP_MAX_DOWNSPREAD] &
+				DP_MAX_DOWNSPREAD_0_5);
+	DRM_DEV_DEBUG_DRIVER(dev, "Maximum Down-Spread: %s, %ssupport SSC!",
+			     it6505->enable_ssc ? "0.5" : "0",
+			     it6505->enable_ssc ? "" : "Not ");
+
+	it6505->step_train = it6505_use_step_train_check(it6505);
+	if (it6505->step_train)
+		DRM_DEV_DEBUG_DRIVER(dev, "auto train fail, will step train");
+
+	bcaps = it6505_dpcd_read(it6505, DP_AUX_HDCP_BCAPS);
+	DRM_DEV_DEBUG_DRIVER(dev, "bcaps:0x%02x", bcaps);
+	if (bcaps & DP_BCAPS_HDCP_CAPABLE) {
+		it6505->is_repeater = (bcaps & DP_BCAPS_REPEATER_PRESENT);
+		DRM_DEV_DEBUG_DRIVER(dev, "Support HDCP! Downstream is %s!",
+				     it6505->is_repeater ? "repeater" :
+				     "receiver");
+	} else {
+		DRM_DEV_DEBUG_DRIVER(dev, "Sink not support HDCP!");
+		it6505->hdcp_desired = false;
+	}
+	DRM_DEV_DEBUG_DRIVER(dev, "HDCP %s",
+			     it6505->hdcp_desired ? "desired" : "undesired");
+}
+
+static void it6505_setup_ssc(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_TRAIN_CTRL0, SPREAD_AMP_5,
+			it6505->enable_ssc ? SPREAD_AMP_5 : 0x00);
+	if (it6505->enable_ssc) {
+		it6505_write(it6505, REG_BANK_SEL, 0x01);
+		it6505_write(it6505, REG_SSC_CTRL0, 0x9E);
+		it6505_write(it6505, REG_SSC_CTRL1, 0x1C);
+		it6505_write(it6505, REG_SSC_CTRL2, 0x42);
+		it6505_write(it6505, REG_BANK_SEL, 0x00);
+		it6505_write(it6505, REG_SP_CTRL0, 0x07);
+		it6505_write(it6505, REG_IP_CTRL1, 0x29);
+		it6505_write(it6505, REG_IP_CTRL2, 0x03);
+		/* Stamp Interrupt Step */
+		it6505_set_bits(it6505, REG_TIME_STMP_CTRL, M_STAMP_STEP,
+				0x10);
+		it6505_dpcd_write(it6505, DP_DOWNSPREAD_CTRL,
+				  DP_SPREAD_AMP_0_5);
+	} else {
+		it6505_dpcd_write(it6505, DP_DOWNSPREAD_CTRL, 0x00);
+		it6505_set_bits(it6505, REG_TIME_STMP_CTRL, M_STAMP_STEP,
+				0x00);
+	}
+}
+
+static inline void it6505_link_rate_setup(struct it6505 *it6505)
+{
+	it6505_set_bits(it6505, REG_TRAIN_CTRL0, FORCE_LBR,
+			(it6505->link_rate_bw_code == RBR) ? FORCE_LBR : 0x00);
+	it6505_set_bits(it6505, REG_LINK_DRV, DRV_HS,
+			(it6505->link_rate_bw_code == RBR) ? 0x00 : DRV_HS);
+}
+
+static void it6505_lane_count_setup(struct it6505 *it6505)
+{
+	it6505_get_extcon_property(it6505);
+	it6505_set_bits(it6505, REG_TRAIN_CTRL0, LANE_SWAP,
+			it6505->lane_swap ? LANE_SWAP : 0x00);
+	it6505_set_bits(it6505, REG_TRAIN_CTRL0, LANE_COUNT_MASK,
+			(it6505->lane_count - 1) << 1);
+}
+
+static void it6505_link_training_setup(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	if (it6505->enable_enhanced_frame)
+		it6505_set_bits(it6505, REG_DATA_MUTE_CTRL,
+				ENABLE_ENHANCED_FRAME, ENABLE_ENHANCED_FRAME);
+
+	it6505_link_rate_setup(it6505);
+	it6505_lane_count_setup(it6505);
+	it6505_setup_ssc(it6505);
+	DRM_DEV_DEBUG_DRIVER(dev,
+			     "%s, %d lanes, %sable ssc, %sable enhanced frame",
+			     it6505->link_rate_bw_code != RBR ? "HBR" : "RBR",
+			     it6505->lane_count,
+			     it6505->enable_ssc ? "en" : "dis",
+			     it6505->enable_enhanced_frame ? "en" : "dis");
+}
+
+static bool it6505_link_start_auto_train(struct it6505 *it6505)
+{
+	int timeout = 500, link_training_state;
+	bool state = false;
+
+	mutex_lock(&it6505->aux_lock);
+	it6505_set_bits(it6505, REG_TRAIN_CTRL0,
+			FORCE_CR_DONE | FORCE_EQ_DONE, 0x00);
+	it6505_write(it6505, REG_TRAIN_CTRL1, FORCE_RETRAIN);
+	it6505_write(it6505, REG_TRAIN_CTRL1, AUTO_TRAIN);
+
+	while (timeout > 0) {
+		usleep_range(1000, 2000);
+		link_training_state = it6505_read(it6505, REG_LINK_TRAIN_STS);
+
+		if (link_training_state > 0 &&
+		    (link_training_state & LINK_STATE_NORP)) {
+			state = true;
+			goto unlock;
+		}
+
+		timeout--;
+	}
+unlock:
+	mutex_unlock(&it6505->aux_lock);
+
+	return state;
+}
+
+static int it6505_drm_dp_link_configure(struct it6505 *it6505)
+{
+	u8 values[2];
+	int err;
+	struct drm_dp_aux *aux = &it6505->aux;
+
+	values[0] = it6505->link_rate_bw_code;
+	values[1] = it6505->lane_count;
+
+	if (it6505->enable_enhanced_frame)
+		values[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
+
+	err = drm_dp_dpcd_write(aux, DP_LINK_BW_SET, values, sizeof(values));
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static bool it6505_check_voltage_swing_max(u8 lane_voltage_swing_pre_emphasis)
+{
+	return ((lane_voltage_swing_pre_emphasis & 0x03) == MAX_CR_LEVEL);
+}
+
+static bool it6505_check_pre_emphasis_max(u8 lane_voltage_swing_pre_emphasis)
+{
+	return ((lane_voltage_swing_pre_emphasis & 0x03) == MAX_EQ_LEVEL);
+}
+
+static bool it6505_check_max_voltage_swing_reached(u8 *lane_voltage_swing,
+						   u8 lane_count)
+{
+	u8 i;
+
+	for (i = 0; i < lane_count; i++) {
+		if (lane_voltage_swing[i] & DP_TRAIN_MAX_SWING_REACHED)
+			return true;
+	}
+
+	return false;
+}
+
+static bool
+step_train_lane_voltage_para_set(struct it6505 *it6505,
+				 struct it6505_step_train_para
+				 *lane_voltage_pre_emphasis,
+				 u8 *lane_voltage_pre_emphasis_set)
+{
+	u8 *voltage_swing = lane_voltage_pre_emphasis->voltage_swing;
+	u8 *pre_emphasis = lane_voltage_pre_emphasis->pre_emphasis;
+	u8 i;
+
+	for (i = 0; i < it6505->lane_count; i++) {
+		voltage_swing[i] &= 0x03;
+		lane_voltage_pre_emphasis_set[i] = voltage_swing[i];
+		if (it6505_check_voltage_swing_max(voltage_swing[i]))
+			lane_voltage_pre_emphasis_set[i] |=
+				DP_TRAIN_MAX_SWING_REACHED;
+
+		pre_emphasis[i] &= 0x03;
+		lane_voltage_pre_emphasis_set[i] |= pre_emphasis[i]
+			<< DP_TRAIN_PRE_EMPHASIS_SHIFT;
+		if (it6505_check_pre_emphasis_max(pre_emphasis[i]))
+			lane_voltage_pre_emphasis_set[i] |=
+				DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+		it6505_dpcd_write(it6505, DP_TRAINING_LANE0_SET + i,
+				  lane_voltage_pre_emphasis_set[i]);
+
+		if (lane_voltage_pre_emphasis_set[i] !=
+		    it6505_dpcd_read(it6505, DP_TRAINING_LANE0_SET + i))
+			return false;
+	}
+
+	return true;
+}
+
+static bool
+it6505_step_cr_train(struct it6505 *it6505,
+		     struct it6505_step_train_para *lane_voltage_pre_emphasis)
+{
+	u8 loop_count = 0, i = 0, j;
+	u8 link_status[DP_LINK_STATUS_SIZE] = { 0 };
+	u8 lane_level_config[MAX_LANE_COUNT] = { 0 };
+	int pre_emphasis_adjust = -1, voltage_swing_adjust = -1;
+	const struct drm_dp_aux *aux = &it6505->aux;
+
+	it6505_dpcd_write(it6505, DP_DOWNSPREAD_CTRL,
+			  it6505->enable_ssc ? DP_SPREAD_AMP_0_5 : 0x00);
+	it6505_dpcd_write(it6505, DP_TRAINING_PATTERN_SET,
+			  DP_TRAINING_PATTERN_1);
+
+	while (loop_count < 5 && i < 10) {
+		i++;
+		if (!step_train_lane_voltage_para_set(it6505,
+						      lane_voltage_pre_emphasis,
+						      lane_level_config))
+			continue;
+		drm_dp_link_train_clock_recovery_delay(aux, it6505->dpcd);
+		drm_dp_dpcd_read_link_status(&it6505->aux, link_status);
+
+		if (drm_dp_clock_recovery_ok(link_status, it6505->lane_count)) {
+			it6505_set_bits(it6505, REG_TRAIN_CTRL0, FORCE_CR_DONE,
+					FORCE_CR_DONE);
+			return true;
+		}
+		DRM_DEV_DEBUG_DRIVER(&it6505->client->dev, "cr not done");
+
+		if (it6505_check_max_voltage_swing_reached(lane_level_config,
+							   it6505->lane_count))
+			goto cr_train_fail;
+
+		for (j = 0; j < it6505->lane_count; j++) {
+			lane_voltage_pre_emphasis->voltage_swing[j] =
+				drm_dp_get_adjust_request_voltage(link_status,
+								  j) >>
+				DP_TRAIN_VOLTAGE_SWING_SHIFT;
+			lane_voltage_pre_emphasis->pre_emphasis[j] =
+			drm_dp_get_adjust_request_pre_emphasis(link_status,
+							       j) >>
+					DP_TRAIN_PRE_EMPHASIS_SHIFT;
+			if (voltage_swing_adjust ==
+			     lane_voltage_pre_emphasis->voltage_swing[j] &&
+			    pre_emphasis_adjust ==
+			     lane_voltage_pre_emphasis->pre_emphasis[j]) {
+				loop_count++;
+				continue;
+			}
+
+			voltage_swing_adjust =
+				lane_voltage_pre_emphasis->voltage_swing[j];
+			pre_emphasis_adjust =
+				lane_voltage_pre_emphasis->pre_emphasis[j];
+			loop_count = 0;
+
+			if (voltage_swing_adjust + pre_emphasis_adjust >
+			    MAX_EQ_LEVEL)
+				lane_voltage_pre_emphasis->voltage_swing[j] =
+					MAX_EQ_LEVEL -
+					lane_voltage_pre_emphasis
+						->pre_emphasis[j];
+		}
+	}
+
+cr_train_fail:
+	it6505_dpcd_write(it6505, DP_TRAINING_PATTERN_SET,
+			  DP_TRAINING_PATTERN_DISABLE);
+
+	return false;
+}
+
+static bool
+it6505_step_eq_train(struct it6505 *it6505,
+		     struct it6505_step_train_para *lane_voltage_pre_emphasis)
+{
+	u8 loop_count = 0, i, link_status[DP_LINK_STATUS_SIZE] = { 0 };
+	u8 lane_level_config[MAX_LANE_COUNT] = { 0 };
+	const struct drm_dp_aux *aux = &it6505->aux;
+
+	it6505_dpcd_write(it6505, DP_TRAINING_PATTERN_SET,
+			  DP_TRAINING_PATTERN_2);
+
+	while (loop_count < 6) {
+		loop_count++;
+
+		if (!step_train_lane_voltage_para_set(it6505,
+						      lane_voltage_pre_emphasis,
+						      lane_level_config))
+			continue;
+
+		drm_dp_link_train_channel_eq_delay(aux, it6505->dpcd);
+		drm_dp_dpcd_read_link_status(&it6505->aux, link_status);
+
+		if (!drm_dp_clock_recovery_ok(link_status, it6505->lane_count))
+			goto eq_train_fail;
+
+		if (drm_dp_channel_eq_ok(link_status, it6505->lane_count)) {
+			it6505_dpcd_write(it6505, DP_TRAINING_PATTERN_SET,
+					  DP_TRAINING_PATTERN_DISABLE);
+			it6505_set_bits(it6505, REG_TRAIN_CTRL0, FORCE_EQ_DONE,
+					FORCE_EQ_DONE);
+			return true;
+		}
+		DRM_DEV_DEBUG_DRIVER(&it6505->client->dev, "eq not done");
+
+		for (i = 0; i < it6505->lane_count; i++) {
+			lane_voltage_pre_emphasis->voltage_swing[i] =
+				drm_dp_get_adjust_request_voltage(link_status,
+								  i) >>
+				DP_TRAIN_VOLTAGE_SWING_SHIFT;
+			lane_voltage_pre_emphasis->pre_emphasis[i] =
+			drm_dp_get_adjust_request_pre_emphasis(link_status,
+							       i) >>
+					DP_TRAIN_PRE_EMPHASIS_SHIFT;
+
+			if (lane_voltage_pre_emphasis->voltage_swing[i] +
+				    lane_voltage_pre_emphasis->pre_emphasis[i] >
+			    MAX_EQ_LEVEL)
+				lane_voltage_pre_emphasis->voltage_swing[i] =
+					0x03 - lane_voltage_pre_emphasis
+						       ->pre_emphasis[i];
+		}
+	}
+
+eq_train_fail:
+	it6505_dpcd_write(it6505, DP_TRAINING_PATTERN_SET,
+			  DP_TRAINING_PATTERN_DISABLE);
+	return false;
+}
+
+static bool it6505_link_start_step_train(struct it6505 *it6505)
+{
+	int err;
+	struct it6505_step_train_para lane_voltage_pre_emphasis = {
+		.voltage_swing = { 0 },
+		.pre_emphasis = { 0 },
+	};
+
+	DRM_DEV_DEBUG_DRIVER(&it6505->client->dev, "start");
+	err = it6505_drm_dp_link_configure(it6505);
+
+	if (err < 0)
+		return false;
+	if (!it6505_step_cr_train(it6505, &lane_voltage_pre_emphasis))
+		return false;
+	if (!it6505_step_eq_train(it6505, &lane_voltage_pre_emphasis))
+		return false;
+	return true;
+}
+
+static bool it6505_get_video_status(struct it6505 *it6505)
+{
+	int reg_0d;
+
+	reg_0d = it6505_read(it6505, REG_SYSTEM_STS);
+
+	if (reg_0d < 0)
+		return false;
+
+	return reg_0d & VIDEO_STB;
+}
+
+static void it6505_reset_hdcp(struct it6505 *it6505)
+{
+	it6505->hdcp_status = HDCP_AUTH_IDLE;
+	/* Disable CP_Desired */
+	it6505_set_bits(it6505, REG_HDCP_CTRL1, HDCP_CP_ENABLE, 0x00);
+	it6505_set_bits(it6505, REG_RESET_CTRL, HDCP_RESET, HDCP_RESET);
+}
+
+static void it6505_start_hdcp(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "start");
+	it6505_reset_hdcp(it6505);
+	queue_delayed_work(system_wq, &it6505->hdcp_work,
+			   msecs_to_jiffies(2400));
+}
+
+static void it6505_stop_hdcp(struct it6505 *it6505)
+{
+	it6505_reset_hdcp(it6505);
+	cancel_delayed_work(&it6505->hdcp_work);
+}
+
+static bool it6505_hdcp_is_ksv_valid(u8 *ksv)
+{
+	int i, ones = 0;
+
+	/* KSV has 20 1's and 20 0's */
+	for (i = 0; i < DRM_HDCP_KSV_LEN; i++)
+		ones += hweight8(ksv[i]);
+	if (ones != 20)
+		return false;
+	return true;
+}
+
+static void it6505_hdcp_part1_auth(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	u8 hdcp_bcaps;
+
+	it6505_set_bits(it6505, REG_RESET_CTRL, HDCP_RESET, 0x00);
+	/* Disable CP_Desired */
+	it6505_set_bits(it6505, REG_HDCP_CTRL1, HDCP_CP_ENABLE, 0x00);
+
+	usleep_range(1000, 1500);
+	hdcp_bcaps = it6505_dpcd_read(it6505, DP_AUX_HDCP_BCAPS);
+	DRM_DEV_DEBUG_DRIVER(dev, "DPCD[0x68028]: 0x%02x",
+			     hdcp_bcaps);
+
+	if (!hdcp_bcaps)
+		return;
+
+	/* clear the repeater List Chk Done and fail bit */
+	it6505_set_bits(it6505, REG_HDCP_TRIGGER,
+			HDCP_TRIGGER_KSV_DONE | HDCP_TRIGGER_KSV_FAIL,
+			0x00);
+
+	/* Enable An Generator */
+	it6505_set_bits(it6505, REG_HDCP_CTRL2, HDCP_AN_GEN, HDCP_AN_GEN);
+	/* delay1ms(10);*/
+	usleep_range(10000, 15000);
+	/* Stop An Generator */
+	it6505_set_bits(it6505, REG_HDCP_CTRL2, HDCP_AN_GEN, 0x00);
+
+	it6505_set_bits(it6505, REG_HDCP_CTRL1, HDCP_CP_ENABLE, HDCP_CP_ENABLE);
+
+	it6505_set_bits(it6505, REG_HDCP_TRIGGER, HDCP_TRIGGER_START,
+			HDCP_TRIGGER_START);
+
+	it6505->hdcp_status = HDCP_AUTH_GOING;
+}
+
+static int it6505_sha1_digest(struct it6505 *it6505, u8 *sha1_input,
+			      unsigned int size, u8 *output_av)
+{
+	struct shash_desc *desc;
+	struct crypto_shash *tfm;
+	int err;
+	struct device *dev = &it6505->client->dev;
+
+	tfm = crypto_alloc_shash("sha1", 0, 0);
+	if (IS_ERR(tfm)) {
+		dev_err(dev, "crypto_alloc_shash sha1 failed");
+		return PTR_ERR(tfm);
+	}
+	desc = kzalloc(sizeof(*desc) + crypto_shash_descsize(tfm), GFP_KERNEL);
+	if (!desc) {
+		crypto_free_shash(tfm);
+		return -ENOMEM;
+	}
+
+	desc->tfm = tfm;
+	err = crypto_shash_digest(desc, sha1_input, size, output_av);
+	if (err)
+		dev_err(dev, "crypto_shash_digest sha1 failed");
+
+	crypto_free_shash(tfm);
+	kfree(desc);
+	return err;
+}
+
+static int it6505_setup_sha1_input(struct it6505 *it6505, u8 *sha1_input)
+{
+	struct device *dev = &it6505->client->dev;
+	u8 binfo[2];
+	int down_stream_count, i, err, msg_count = 0;
+
+	err = it6505_get_dpcd(it6505, DP_AUX_HDCP_BINFO, binfo,
+			      ARRAY_SIZE(binfo));
+
+	if (err < 0) {
+		dev_err(dev, "Read binfo value Fail");
+		return err;
+	}
+
+	down_stream_count = binfo[0] & 0x7F;
+	DRM_DEV_DEBUG_DRIVER(dev, "binfo:0x%*ph", (int)ARRAY_SIZE(binfo),
+			     binfo);
+
+	if ((binfo[0] & BIT(7)) || (binfo[1] & BIT(3))) {
+		dev_err(dev, "HDCP max cascade device exceed");
+		return 0;
+	}
+
+	if (!down_stream_count ||
+	    down_stream_count > MAX_HDCP_DOWN_STREAM_COUNT) {
+		dev_err(dev, "HDCP down stream count Error %d",
+			down_stream_count);
+		return 0;
+	}
+
+	for (i = 0; i < down_stream_count; i++) {
+		err = it6505_get_dpcd(it6505, DP_AUX_HDCP_KSV_FIFO +
+				      (i % 3) * DRM_HDCP_KSV_LEN,
+				      sha1_input + msg_count,
+				      DRM_HDCP_KSV_LEN);
+
+		if (err < 0)
+			return err;
+
+		msg_count += 5;
+	}
+
+	it6505->hdcp_down_stream_count = down_stream_count;
+	sha1_input[msg_count++] = binfo[0];
+	sha1_input[msg_count++] = binfo[1];
+
+	it6505_set_bits(it6505, REG_HDCP_CTRL2, HDCP_EN_M0_READ,
+			HDCP_EN_M0_READ);
+
+	err = regmap_bulk_read(it6505->regmap, REG_M0_0_7,
+			       sha1_input + msg_count, 8);
+
+	it6505_set_bits(it6505, REG_HDCP_CTRL2, HDCP_EN_M0_READ, 0x00);
+
+	if (err < 0) {
+		dev_err(dev, " Warning, Read M value Fail");
+		return err;
+	}
+
+	msg_count += 8;
+
+	return msg_count;
+}
+
+static bool it6505_hdcp_part2_ksvlist_check(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	u8 av[5][4], bv[5][4];
+	int i, err;
+
+	i = it6505_setup_sha1_input(it6505, it6505->sha1_input);
+	if (i <= 0) {
+		dev_err(dev, "SHA-1 Input length error %d", i);
+		return false;
+	}
+
+	it6505_sha1_digest(it6505, it6505->sha1_input, i, (u8 *)av);
+
+	err = it6505_get_dpcd(it6505, DP_AUX_HDCP_V_PRIME(0), (u8 *)bv,
+			      sizeof(bv));
+
+	if (err < 0) {
+		dev_err(dev, "Read V' value Fail");
+		return false;
+	}
+
+	for (i = 0; i < 5; i++)
+		if (bv[i][3] != av[i][0] || bv[i][2] != av[i][1] ||
+		    bv[i][1] != av[i][2] || bv[i][0] != av[i][3])
+			return false;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "V' all match!!");
+	return true;
+}
+
+static void it6505_hdcp_wait_ksv_list(struct work_struct *work)
+{
+	struct it6505 *it6505 = container_of(work, struct it6505,
+					     hdcp_wait_ksv_list);
+	struct device *dev = &it6505->client->dev;
+	unsigned int timeout = 5000;
+	u8 bstatus = 0;
+	bool ksv_list_check;
+
+	timeout /= 20;
+	while (timeout > 0) {
+		if (!it6505_get_sink_hpd_status(it6505))
+			return;
+
+		bstatus = it6505_dpcd_read(it6505, DP_AUX_HDCP_BSTATUS);
+
+		if (bstatus & DP_BSTATUS_READY)
+			break;
+
+		msleep(20);
+		timeout--;
+	}
+
+	if (timeout == 0) {
+		DRM_DEV_DEBUG_DRIVER(dev, "timeout and ksv list wait failed");
+		goto timeout;
+	}
+
+	ksv_list_check = it6505_hdcp_part2_ksvlist_check(it6505);
+	DRM_DEV_DEBUG_DRIVER(dev, "ksv list ready, ksv list check %s",
+			     ksv_list_check ? "pass" : "fail");
+	if (ksv_list_check) {
+		it6505_set_bits(it6505, REG_HDCP_TRIGGER,
+				HDCP_TRIGGER_KSV_DONE, HDCP_TRIGGER_KSV_DONE);
+		return;
+	}
+timeout:
+	it6505_set_bits(it6505, REG_HDCP_TRIGGER,
+			HDCP_TRIGGER_KSV_DONE | HDCP_TRIGGER_KSV_FAIL,
+			HDCP_TRIGGER_KSV_DONE | HDCP_TRIGGER_KSV_FAIL);
+}
+
+static void it6505_hdcp_work(struct work_struct *work)
+{
+	struct it6505 *it6505 = container_of(work, struct it6505,
+					     hdcp_work.work);
+	struct device *dev = &it6505->client->dev;
+	int ret;
+	u8 link_status[DP_LINK_STATUS_SIZE] = { 0 };
+
+	DRM_DEV_DEBUG_DRIVER(dev, "start");
+
+	if (!it6505_get_sink_hpd_status(it6505))
+		return;
+
+	ret = drm_dp_dpcd_read_link_status(&it6505->aux, link_status);
+	DRM_DEV_DEBUG_DRIVER(dev, "ret: %d link_status: %*ph", ret,
+			     (int)sizeof(link_status), link_status);
+
+	if (ret < 0 || !drm_dp_channel_eq_ok(link_status, it6505->lane_count) ||
+	    !it6505_get_video_status(it6505)) {
+		DRM_DEV_DEBUG_DRIVER(dev, "link train not done or no video");
+		return;
+	}
+
+	ret = it6505_get_dpcd(it6505, DP_AUX_HDCP_BKSV, it6505->bksvs,
+			      ARRAY_SIZE(it6505->bksvs));
+	if (ret < 0) {
+		dev_err(dev, "fail to get bksv  ret: %d", ret);
+		it6505_set_bits(it6505, REG_HDCP_TRIGGER,
+				HDCP_TRIGGER_KSV_FAIL, HDCP_TRIGGER_KSV_FAIL);
+	}
+
+	DRM_DEV_DEBUG_DRIVER(dev, "bksv = 0x%*ph",
+			     (int)ARRAY_SIZE(it6505->bksvs), it6505->bksvs);
+
+	if (!it6505_hdcp_is_ksv_valid(it6505->bksvs)) {
+		dev_err(dev, "Display Port bksv not valid");
+		it6505_set_bits(it6505, REG_HDCP_TRIGGER,
+				HDCP_TRIGGER_KSV_FAIL, HDCP_TRIGGER_KSV_FAIL);
+	}
+
+	it6505_hdcp_part1_auth(it6505);
+}
+
+static void it6505_show_hdcp_info(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	int i;
+	u8 *sha1 = it6505->sha1_input;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "hdcp_status: %d is_repeater: %d",
+			     it6505->hdcp_status, it6505->is_repeater);
+	DRM_DEV_DEBUG_DRIVER(dev, "bksv = 0x%*ph",
+			     (int)ARRAY_SIZE(it6505->bksvs), it6505->bksvs);
+
+	if (it6505->is_repeater) {
+		DRM_DEV_DEBUG_DRIVER(dev, "hdcp_down_stream_count: %d",
+				     it6505->hdcp_down_stream_count);
+		DRM_DEV_DEBUG_DRIVER(dev, "sha1_input: 0x%*ph",
+				     (int)ARRAY_SIZE(it6505->sha1_input),
+				     it6505->sha1_input);
+		for (i = 0; i < it6505->hdcp_down_stream_count; i++) {
+			DRM_DEV_DEBUG_DRIVER(dev, "KSV_%d = 0x%*ph", i,
+					     DRM_HDCP_KSV_LEN, sha1);
+			sha1 += DRM_HDCP_KSV_LEN;
+		}
+		DRM_DEV_DEBUG_DRIVER(dev, "binfo: 0x%2ph M0: 0x%8ph",
+				     sha1, sha1 + 2);
+	}
+}
+
+static void it6505_stop_link_train(struct it6505 *it6505)
+{
+	it6505->link_state = LINK_IDLE;
+	cancel_work_sync(&it6505->link_works);
+	it6505_write(it6505, REG_TRAIN_CTRL1, FORCE_RETRAIN);
+}
+
+static void it6505_link_train_ok(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	it6505->link_state = LINK_OK;
+	/* disalbe mute enable avi info frame */
+	it6505_set_bits(it6505, REG_DATA_MUTE_CTRL, EN_VID_MUTE, 0x00);
+	it6505_set_bits(it6505, REG_INFOFRAME_CTRL,
+			EN_VID_CTRL_PKT, EN_VID_CTRL_PKT);
+
+	if (it6505_audio_input(it6505)) {
+		DRM_DEV_DEBUG_DRIVER(dev, "Enable audio!");
+		it6505_enable_audio(it6505);
+	}
+
+	if (it6505->hdcp_desired)
+		it6505_start_hdcp(it6505);
+}
+
+static void it6505_link_step_train_process(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	int ret, i, step_retry = 3;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "Start step train");
+
+	if (it6505->sink_count == 0) {
+		DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count:%d, force eq",
+				     it6505->sink_count);
+		it6505_set_bits(it6505,	REG_TRAIN_CTRL0, FORCE_EQ_DONE,
+				FORCE_EQ_DONE);
+		return;
+	}
+
+	if (!it6505->step_train) {
+		DRM_DEV_DEBUG_DRIVER(dev, "not support step train");
+		return;
+	}
+
+	/* step training start here */
+	for (i = 0; i < step_retry; i++) {
+		it6505_link_reset_step_train(it6505);
+		ret = it6505_link_start_step_train(it6505);
+		DRM_DEV_DEBUG_DRIVER(dev, "step train %s, retry:%d times",
+				     ret ? "pass" : "failed", i + 1);
+		if (ret) {
+			it6505_link_train_ok(it6505);
+			return;
+		}
+	}
+
+	DRM_DEV_DEBUG_DRIVER(dev, "training fail");
+	it6505->link_state = LINK_IDLE;
+	it6505_video_reset(it6505);
+}
+
+static void it6505_link_training_work(struct work_struct *work)
+{
+	struct it6505 *it6505 = container_of(work, struct it6505, link_works);
+	struct device *dev = &it6505->client->dev;
+	int ret;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count: %d",
+			     it6505->sink_count);
+
+	if (!it6505_get_sink_hpd_status(it6505))
+		return;
+
+	it6505_link_training_setup(it6505);
+	it6505_reset_hdcp(it6505);
+	it6505_aux_reset(it6505);
+
+	if (it6505->auto_train_retry < 1) {
+		it6505_link_step_train_process(it6505);
+		return;
+	}
+
+	ret = it6505_link_start_auto_train(it6505);
+	DRM_DEV_DEBUG_DRIVER(dev, "auto train %s, auto_train_retry: %d",
+			     ret ? "pass" : "failed", it6505->auto_train_retry);
+	it6505->auto_train_retry--;
+
+	if (ret) {
+		it6505_link_train_ok(it6505);
+		return;
+	}
+
+	it6505_dump(it6505);
+}
+
+static void it6505_plugged_status_to_codec(struct it6505 *it6505)
+{
+	enum drm_connector_status status = it6505->connector_status;
+
+	if (it6505->plugged_cb && it6505->codec_dev)
+		it6505->plugged_cb(it6505->codec_dev,
+				   status == connector_status_connected);
+}
+
+static int it6505_process_hpd_irq(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	int ret, dpcd_sink_count, dp_irq_vector, bstatus;
+	u8 link_status[DP_LINK_STATUS_SIZE];
+
+	if (!it6505_get_sink_hpd_status(it6505)) {
+		DRM_DEV_DEBUG_DRIVER(dev, "HPD_IRQ HPD low");
+		it6505->sink_count = 0;
+		return 0;
+	}
+
+	ret = it6505_dpcd_read(it6505, DP_SINK_COUNT);
+	if (ret < 0)
+		return ret;
+
+	dpcd_sink_count = DP_GET_SINK_COUNT(ret);
+	DRM_DEV_DEBUG_DRIVER(dev, "dpcd_sink_count: %d it6505->sink_count:%d",
+			     dpcd_sink_count, it6505->sink_count);
+
+	if (it6505->branch_device && dpcd_sink_count != it6505->sink_count) {
+		memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
+		it6505->sink_count = dpcd_sink_count;
+		it6505_reset_logic(it6505);
+		it6505_int_mask_enable(it6505);
+		it6505_init(it6505);
+		return 0;
+	}
+
+	dp_irq_vector = it6505_dpcd_read(it6505, DP_DEVICE_SERVICE_IRQ_VECTOR);
+	if (dp_irq_vector < 0)
+		return dp_irq_vector;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "dp_irq_vector = 0x%02x", dp_irq_vector);
+
+	if (dp_irq_vector & DP_CP_IRQ) {
+		it6505_set_bits(it6505, REG_HDCP_TRIGGER, HDCP_TRIGGER_CPIRQ,
+				HDCP_TRIGGER_CPIRQ);
+
+		bstatus = it6505_dpcd_read(it6505, DP_AUX_HDCP_BSTATUS);
+		if (bstatus < 0)
+			return bstatus;
+
+		DRM_DEV_DEBUG_DRIVER(dev, "Bstatus = 0x%02x", bstatus);
+	}
+
+	ret = drm_dp_dpcd_read_link_status(&it6505->aux, link_status);
+	if (ret < 0) {
+		dev_err(dev, "Fail to read link status ret: %d", ret);
+		return ret;
+	}
+
+	DRM_DEV_DEBUG_DRIVER(dev, "link status = 0x%*ph",
+			     (int)ARRAY_SIZE(link_status), link_status);
+
+	if (!drm_dp_channel_eq_ok(link_status, it6505->lane_count)) {
+		it6505->auto_train_retry = AUTO_TRAIN_RETRY;
+		it6505_video_reset(it6505);
+	}
+
+	return 0;
+}
+
+static void it6505_irq_hpd(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	it6505->hpd_state = it6505_get_sink_hpd_status(it6505);
+	DRM_DEV_DEBUG_DRIVER(dev, "hpd change interrupt, change to %s",
+			     it6505->hpd_state ? "high" : "low");
+
+	if (it6505->bridge.dev)
+		drm_helper_hpd_irq_event(it6505->bridge.dev);
+	DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count: %d",
+			     it6505->sink_count);
+
+	if (it6505->hpd_state) {
+		wait_for_completion_timeout(&it6505->wait_edid_complete,
+					    msecs_to_jiffies(6000));
+		it6505_lane_termination_on(it6505);
+		it6505_lane_power_on(it6505);
+
+		/*
+		 * for some dongle which issue HPD_irq
+		 * when sink count change from  0->1
+		 * it6505 not able to receive HPD_IRQ
+		 * if HW never go into trainig done
+		 */
+
+		if (it6505->branch_device && it6505->sink_count == 0)
+			schedule_work(&it6505->link_works);
+
+		if (!it6505_get_video_status(it6505))
+			it6505_video_reset(it6505);
+
+		it6505_calc_video_info(it6505);
+	} else {
+		memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
+
+		if (it6505->hdcp_desired)
+			it6505_stop_hdcp(it6505);
+
+		it6505_video_disable(it6505);
+		it6505_disable_audio(it6505);
+		it6505_stop_link_train(it6505);
+		it6505_lane_off(it6505);
+		it6505_link_reset_step_train(it6505);
+	}
+}
+
+static void it6505_irq_hpd_irq(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "hpd_irq interrupt");
+
+	if (it6505_process_hpd_irq(it6505) < 0)
+		DRM_DEV_DEBUG_DRIVER(dev, "process hpd_irq fail!");
+}
+
+static void it6505_irq_scdt(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	bool data;
+
+	data = it6505_get_video_status(it6505);
+	DRM_DEV_DEBUG_DRIVER(dev, "video stable change interrupt, %s",
+			     data ? "stable" : "unstable");
+	it6505_calc_video_info(it6505);
+	it6505_link_reset_step_train(it6505);
+
+	if (data)
+		schedule_work(&it6505->link_works);
+}
+
+static void it6505_irq_hdcp_done(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "hdcp done interrupt");
+	it6505->hdcp_status = HDCP_AUTH_DONE;
+	it6505_show_hdcp_info(it6505);
+}
+
+static void it6505_irq_hdcp_fail(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "hdcp fail interrupt");
+	it6505->hdcp_status = HDCP_AUTH_IDLE;
+	it6505_show_hdcp_info(it6505);
+	it6505_start_hdcp(it6505);
+}
+
+static void it6505_irq_aux_cmd_fail(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "AUX PC Request Fail Interrupt");
+}
+
+static void it6505_irq_hdcp_ksv_check(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "HDCP event Interrupt");
+	schedule_work(&it6505->hdcp_wait_ksv_list);
+}
+
+static void it6505_irq_audio_fifo_error(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "audio fifo error Interrupt");
+
+	if (it6505_audio_input(it6505))
+		it6505_enable_audio(it6505);
+}
+
+static void it6505_irq_link_train_fail(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "link training fail interrupt");
+	schedule_work(&it6505->link_works);
+}
+
+static void it6505_irq_video_fifo_error(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "video fifo overflow interrupt");
+	it6505->auto_train_retry = AUTO_TRAIN_RETRY;
+	flush_work(&it6505->link_works);
+	it6505_stop_hdcp(it6505);
+	it6505_video_reset(it6505);
+}
+
+static void it6505_irq_io_latch_fifo_overflow(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "IO latch fifo overflow interrupt");
+	it6505->auto_train_retry = AUTO_TRAIN_RETRY;
+	flush_work(&it6505->link_works);
+	it6505_stop_hdcp(it6505);
+	it6505_video_reset(it6505);
+}
+
+static bool it6505_test_bit(unsigned int bit, const unsigned int *addr)
+{
+	return 1 & (addr[bit / BITS_PER_BYTE] >> (bit % BITS_PER_BYTE));
+}
+
+static irqreturn_t it6505_int_threaded_handler(int unused, void *data)
+{
+	struct it6505 *it6505 = data;
+	struct device *dev = &it6505->client->dev;
+	static const struct {
+		int bit;
+		void (*handler)(struct it6505 *it6505);
+	} irq_vec[] = {
+		{ BIT_INT_HPD, it6505_irq_hpd },
+		{ BIT_INT_HPD_IRQ, it6505_irq_hpd_irq },
+		{ BIT_INT_SCDT, it6505_irq_scdt },
+		{ BIT_INT_HDCP_FAIL, it6505_irq_hdcp_fail },
+		{ BIT_INT_HDCP_DONE, it6505_irq_hdcp_done },
+		{ BIT_INT_AUX_CMD_FAIL, it6505_irq_aux_cmd_fail },
+		{ BIT_INT_HDCP_KSV_CHECK, it6505_irq_hdcp_ksv_check },
+		{ BIT_INT_AUDIO_FIFO_ERROR, it6505_irq_audio_fifo_error },
+		{ BIT_INT_LINK_TRAIN_FAIL, it6505_irq_link_train_fail },
+		{ BIT_INT_VID_FIFO_ERROR, it6505_irq_video_fifo_error },
+		{ BIT_INT_IO_FIFO_OVERFLOW, it6505_irq_io_latch_fifo_overflow },
+	};
+	int int_status[3], i;
+
+	msleep(100);
+	mutex_lock(&it6505->extcon_lock);
+
+	if (it6505->enable_drv_hold || !it6505->powered)
+		goto unlock;
+
+	int_status[0] = it6505_read(it6505, INT_STATUS_01);
+	int_status[1] = it6505_read(it6505, INT_STATUS_02);
+	int_status[2] = it6505_read(it6505, INT_STATUS_03);
+
+	it6505_write(it6505, INT_STATUS_01, int_status[0]);
+	it6505_write(it6505, INT_STATUS_02, int_status[1]);
+	it6505_write(it6505, INT_STATUS_03, int_status[2]);
+
+	DRM_DEV_DEBUG_DRIVER(dev, "reg06 = 0x%02x", int_status[0]);
+	DRM_DEV_DEBUG_DRIVER(dev, "reg07 = 0x%02x", int_status[1]);
+	DRM_DEV_DEBUG_DRIVER(dev, "reg08 = 0x%02x", int_status[2]);
+	it6505_debug_print(it6505, REG_SYSTEM_STS, "");
+
+	if (it6505_test_bit(irq_vec[0].bit, (unsigned int *)int_status))
+		irq_vec[0].handler(it6505);
+
+	if (!it6505->hpd_state)
+		goto unlock;
+
+	for (i = 1; i < ARRAY_SIZE(irq_vec); i++) {
+		if (it6505_test_bit(irq_vec[i].bit, (unsigned int *)int_status))
+			irq_vec[i].handler(it6505);
+	}
+
+unlock:
+	mutex_unlock(&it6505->extcon_lock);
+
+	return IRQ_HANDLED;
+}
+
+static int it6505_poweron(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	struct it6505_platform_data *pdata = &it6505->pdata;
+	int err;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "it6505 start powered on");
+
+	if (it6505->powered) {
+		DRM_DEV_DEBUG_DRIVER(dev, "it6505 already powered on");
+		return 0;
+	}
+
+	if (pdata->pwr18) {
+		err = regulator_enable(pdata->pwr18);
+		if (err) {
+			DRM_DEV_DEBUG_DRIVER(dev, "Failed to enable VDD18: %d",
+					     err);
+			return err;
+		}
+	}
+
+	if (pdata->ovdd) {
+		/* time interval between IVDD and OVDD at least be 1ms */
+		usleep_range(1000, 2000);
+		err = regulator_enable(pdata->ovdd);
+		if (err) {
+			regulator_disable(pdata->pwr18);
+			return err;
+		}
+	}
+	/* time interval between OVDD and SYSRSTN at least be 10ms */
+	if (pdata->gpiod_reset) {
+		usleep_range(10000, 20000);
+		gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
+		usleep_range(1000, 2000);
+		gpiod_set_value_cansleep(pdata->gpiod_reset, 1);
+		usleep_range(10000, 20000);
+	}
+
+	it6505_reset_logic(it6505);
+	it6505_int_mask_enable(it6505);
+	it6505_init(it6505);
+	it6505_lane_off(it6505);
+
+	it6505->powered = true;
+
+	return 0;
+}
+
+static int it6505_poweroff(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	struct it6505_platform_data *pdata = &it6505->pdata;
+	int err;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "it6505 start power off");
+
+	if (!it6505->powered) {
+		DRM_DEV_DEBUG_DRIVER(dev, "power had been already off");
+		return 0;
+	}
+
+	if (pdata->gpiod_reset)
+		gpiod_set_value_cansleep(pdata->gpiod_reset, 0);
+
+	if (pdata->pwr18) {
+		err = regulator_disable(pdata->pwr18);
+		if (err)
+			return err;
+	}
+
+	if (pdata->ovdd) {
+		err = regulator_disable(pdata->ovdd);
+		if (err)
+			return err;
+	}
+
+	it6505->powered = false;
+	it6505->sink_count = 0;
+
+	return 0;
+}
+
+static enum drm_connector_status it6505_detect(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	enum drm_connector_status status = connector_status_disconnected;
+	int dp_sink_count;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count:%d powered:%d",
+			     it6505->sink_count, it6505->powered);
+
+	mutex_lock(&it6505->mode_lock);
+
+	if (!it6505->powered)
+		goto unlock;
+
+	if (it6505->enable_drv_hold) {
+		status = it6505_get_sink_hpd_status(it6505) ?
+					connector_status_connected :
+					connector_status_disconnected;
+		goto unlock;
+	}
+
+	if (it6505_get_sink_hpd_status(it6505)) {
+		it6505_aux_on(it6505);
+		it6505_drm_dp_link_probe(&it6505->aux, &it6505->link);
+		it6505_drm_dp_link_power_up(&it6505->aux, &it6505->link);
+		it6505->auto_train_retry = AUTO_TRAIN_RETRY;
+
+		if (it6505->dpcd[0] == 0) {
+			it6505_get_dpcd(it6505, DP_DPCD_REV, it6505->dpcd,
+					ARRAY_SIZE(it6505->dpcd));
+			it6505_variable_config(it6505);
+			it6505_parse_link_capabilities(it6505);
+		}
+
+		dp_sink_count = it6505_dpcd_read(it6505, DP_SINK_COUNT);
+		it6505->sink_count = DP_GET_SINK_COUNT(dp_sink_count);
+		DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count:%d branch:%d",
+				     it6505->sink_count, it6505->branch_device);
+
+		if (it6505->branch_device) {
+			status = (it6505->sink_count != 0) ?
+				 connector_status_connected :
+				 connector_status_disconnected;
+		} else {
+			status = connector_status_connected;
+		}
+	} else {
+		it6505->sink_count = 0;
+		memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
+	}
+
+unlock:
+	if (it6505->connector_status != status) {
+		it6505->connector_status = status;
+		it6505_plugged_status_to_codec(it6505);
+	}
+
+	mutex_unlock(&it6505->mode_lock);
+
+	return status;
+}
+
+static int it6505_extcon_notifier(struct notifier_block *self,
+				  unsigned long event, void *ptr)
+{
+	struct it6505 *it6505 = container_of(self, struct it6505, event_nb);
+
+	schedule_work(&it6505->extcon_wq);
+	return NOTIFY_DONE;
+}
+
+static void it6505_extcon_work(struct work_struct *work)
+{
+	struct it6505 *it6505 = container_of(work, struct it6505, extcon_wq);
+	struct device *dev = &it6505->client->dev;
+	int state = extcon_get_state(it6505->extcon, EXTCON_DISP_DP);
+	unsigned int pwroffretry = 0;
+
+	if (it6505->enable_drv_hold)
+		return;
+
+	mutex_lock(&it6505->extcon_lock);
+
+	DRM_DEV_DEBUG_DRIVER(dev, "EXTCON_DISP_DP = 0x%02x", state);
+	if (state > 0) {
+		DRM_DEV_DEBUG_DRIVER(dev, "start to power on");
+		msleep(100);
+		it6505_poweron(it6505);
+	} else {
+		DRM_DEV_DEBUG_DRIVER(dev, "start to power off");
+		while (it6505_poweroff(it6505) && pwroffretry++ < 5) {
+			DRM_DEV_DEBUG_DRIVER(dev, "power off fail %d times",
+					     pwroffretry);
+		}
+
+		drm_helper_hpd_irq_event(it6505->bridge.dev);
+		memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
+		DRM_DEV_DEBUG_DRIVER(dev, "power off it6505 success!");
+	}
+
+	mutex_unlock(&it6505->extcon_lock);
+}
+
+static int it6505_use_notifier_module(struct it6505 *it6505)
+{
+	int ret;
+	struct device *dev = &it6505->client->dev;
+
+	it6505->event_nb.notifier_call = it6505_extcon_notifier;
+	INIT_WORK(&it6505->extcon_wq, it6505_extcon_work);
+	ret = devm_extcon_register_notifier(&it6505->client->dev,
+					    it6505->extcon, EXTCON_DISP_DP,
+					    &it6505->event_nb);
+	if (ret) {
+		dev_err(dev, "failed to register notifier for DP");
+		return ret;
+	}
+
+	schedule_work(&it6505->extcon_wq);
+
+	return 0;
+}
+
+static void it6505_remove_notifier_module(struct it6505 *it6505)
+{
+	if (it6505->extcon) {
+		devm_extcon_unregister_notifier(&it6505->client->dev,
+						it6505->extcon,	EXTCON_DISP_DP,
+						&it6505->event_nb);
+
+		flush_work(&it6505->extcon_wq);
+	}
+}
+
+static void __maybe_unused it6505_delayed_audio(struct work_struct *work)
+{
+	struct it6505 *it6505 = container_of(work, struct it6505,
+					     delayed_audio.work);
+
+	DRM_DEV_DEBUG_DRIVER(&it6505->client->dev, "start");
+
+	if (!it6505->powered)
+		return;
+
+	if (!it6505->enable_drv_hold)
+		it6505_enable_audio(it6505);
+}
+
+static int __maybe_unused it6505_audio_setup_hw_params(struct it6505 *it6505,
+						       struct hdmi_codec_params
+						       *params)
+{
+	struct device *dev = &it6505->client->dev;
+	int i = 0;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "%s %d Hz, %d bit, %d channels\n", __func__,
+			     params->sample_rate, params->sample_width,
+			     params->cea.channels);
+
+	if (!it6505->bridge.encoder)
+		return -ENODEV;
+
+	if (params->cea.channels <= 1 || params->cea.channels > 8) {
+		DRM_DEV_DEBUG_DRIVER(dev, "channel number: %d not support",
+				     it6505->audio.channel_count);
+		return -EINVAL;
+	}
+
+	it6505->audio.channel_count = params->cea.channels;
+
+	while (i < ARRAY_SIZE(audio_sample_rate_map) &&
+	       params->sample_rate !=
+		       audio_sample_rate_map[i].sample_rate_value) {
+		i++;
+	}
+	if (i == ARRAY_SIZE(audio_sample_rate_map)) {
+		DRM_DEV_DEBUG_DRIVER(dev, "sample rate: %d Hz not support",
+				     params->sample_rate);
+		return -EINVAL;
+	}
+	it6505->audio.sample_rate = audio_sample_rate_map[i].rate;
+
+	switch (params->sample_width) {
+	case 16:
+		it6505->audio.word_length = WORD_LENGTH_16BIT;
+		break;
+	case 18:
+		it6505->audio.word_length = WORD_LENGTH_18BIT;
+		break;
+	case 20:
+		it6505->audio.word_length = WORD_LENGTH_20BIT;
+		break;
+	case 24:
+	case 32:
+		it6505->audio.word_length = WORD_LENGTH_24BIT;
+		break;
+	default:
+		DRM_DEV_DEBUG_DRIVER(dev, "wordlength: %d bit not support",
+				     params->sample_width);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void __maybe_unused it6505_audio_shutdown(struct device *dev, void *data)
+{
+	struct it6505 *it6505 = dev_get_drvdata(dev);
+
+	if (it6505->powered)
+		it6505_disable_audio(it6505);
+}
+
+static int __maybe_unused it6505_audio_hook_plugged_cb(struct device *dev,
+						       void *data,
+						       hdmi_codec_plugged_cb fn,
+						       struct device *codec_dev)
+{
+	struct it6505 *it6505 = data;
+
+	it6505->plugged_cb = fn;
+	it6505->codec_dev = codec_dev;
+	it6505_plugged_status_to_codec(it6505);
+
+	return 0;
+}
+
+static inline struct it6505 *bridge_to_it6505(struct drm_bridge *bridge)
+{
+	return container_of(bridge, struct it6505, bridge);
+}
+
+static int it6505_bridge_attach(struct drm_bridge *bridge,
+				enum drm_bridge_attach_flags flags)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+	struct device *dev = &it6505->client->dev;
+	int ret;
+
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+		DRM_ERROR("DRM_BRIDGE_ATTACH_NO_CONNECTOR must be supplied");
+		return -EINVAL;
+	}
+
+	if (!bridge->encoder) {
+		dev_err(dev, "Parent encoder object not found");
+		return -ENODEV;
+	}
+
+	/* Register aux channel */
+	it6505->aux.name = "DP-AUX";
+	it6505->aux.dev = dev;
+	it6505->aux.drm_dev = bridge->dev;
+	it6505->aux.transfer = it6505_aux_transfer;
+
+	ret = drm_dp_aux_register(&it6505->aux);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to register aux: %d", ret);
+		return ret;
+	}
+
+	if (it6505->extcon) {
+		ret = it6505_use_notifier_module(it6505);
+		if (ret < 0) {
+			dev_err(dev, "use notifier module failed");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static void it6505_bridge_detach(struct drm_bridge *bridge)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+
+	flush_work(&it6505->link_works);
+	it6505_remove_notifier_module(it6505);
+}
+
+static enum drm_mode_status
+it6505_bridge_mode_valid(struct drm_bridge *bridge,
+			 const struct drm_display_info *info,
+			 const struct drm_display_mode *mode)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return MODE_NO_INTERLACE;
+
+	if (mode->clock > DPI_PIXEL_CLK_MAX)
+		return MODE_CLOCK_HIGH;
+
+	it6505->video_info.clock = mode->clock;
+
+	return MODE_OK;
+}
+
+static void it6505_bridge_atomic_enable(struct drm_bridge *bridge,
+					struct drm_bridge_state *old_state)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+	struct device *dev = &it6505->client->dev;
+	struct drm_atomic_state *state = old_state->base.state;
+	struct hdmi_avi_infoframe frame;
+	struct drm_crtc_state *crtc_state;
+	struct drm_connector_state *conn_state;
+	struct drm_display_mode *mode;
+	struct drm_connector *connector;
+	int ret;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "start");
+
+	connector = drm_atomic_get_new_connector_for_encoder(state,
+							     bridge->encoder);
+
+	if (WARN_ON(!connector))
+		return;
+
+	conn_state = drm_atomic_get_new_connector_state(state, connector);
+
+	if (WARN_ON(!conn_state))
+		return;
+
+	crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+
+	if (WARN_ON(!crtc_state))
+		return;
+
+	mode = &crtc_state->adjusted_mode;
+
+	if (WARN_ON(!mode))
+		return;
+
+	ret = drm_hdmi_avi_infoframe_from_display_mode(&frame,
+						       connector,
+						       mode);
+	if (ret)
+		dev_err(dev, "Failed to setup AVI infoframe: %d", ret);
+
+	it6505_update_video_parameter(it6505, mode);
+
+	ret = it6505_send_video_infoframe(it6505, &frame);
+
+	if (ret)
+		dev_err(dev, "Failed to send AVI infoframe: %d", ret);
+
+	it6505_int_mask_enable(it6505);
+	it6505_video_reset(it6505);
+}
+
+static void it6505_bridge_atomic_disable(struct drm_bridge *bridge,
+					 struct drm_bridge_state *old_state)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+	struct device *dev = &it6505->client->dev;
+
+	DRM_DEV_DEBUG_DRIVER(dev, "start");
+
+	if (it6505->powered)
+		it6505_video_disable(it6505);
+}
+
+static enum drm_connector_status
+it6505_bridge_detect(struct drm_bridge *bridge)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+
+	return it6505_detect(it6505);
+}
+
+static struct edid *it6505_bridge_get_edid(struct drm_bridge *bridge,
+					   struct drm_connector *connector)
+{
+	struct it6505 *it6505 = bridge_to_it6505(bridge);
+	struct device *dev = &it6505->client->dev;
+	struct edid *edid;
+
+	edid = drm_do_get_edid(connector, it6505_get_edid_block, it6505);
+
+	if (!edid) {
+		DRM_DEV_DEBUG_DRIVER(dev, "failed to get edid!");
+		return NULL;
+	}
+
+	return edid;
+}
+
+static const struct drm_bridge_funcs it6505_bridge_funcs = {
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+	.attach = it6505_bridge_attach,
+	.detach = it6505_bridge_detach,
+	.mode_valid = it6505_bridge_mode_valid,
+	.atomic_enable = it6505_bridge_atomic_enable,
+	.atomic_disable = it6505_bridge_atomic_disable,
+	.detect = it6505_bridge_detect,
+	.get_edid = it6505_bridge_get_edid,
+};
+
+static __maybe_unused int it6505_bridge_resume(struct device *dev)
+{
+	struct it6505 *it6505 = dev_get_drvdata(dev);
+
+	return it6505_poweron(it6505);
+}
+
+static __maybe_unused int it6505_bridge_suspend(struct device *dev)
+{
+	struct it6505 *it6505 = dev_get_drvdata(dev);
+
+	return it6505_poweroff(it6505);
+}
+
+static SIMPLE_DEV_PM_OPS(it6505_bridge_pm_ops, it6505_bridge_suspend,
+			 it6505_bridge_resume);
+
+static int it6505_init_pdata(struct it6505 *it6505)
+{
+	struct it6505_platform_data *pdata = &it6505->pdata;
+	struct device *dev = &it6505->client->dev;
+
+	/* 1.0V digital core power regulator  */
+	pdata->pwr18 = devm_regulator_get(dev, "pwr18");
+	if (IS_ERR(pdata->pwr18)) {
+		dev_err(dev, "pwr18 regulator not found");
+		return PTR_ERR(pdata->pwr18);
+	}
+
+	pdata->ovdd = devm_regulator_get(dev, "ovdd");
+	if (IS_ERR(pdata->ovdd)) {
+		dev_err(dev, "ovdd regulator not found");
+		return PTR_ERR(pdata->ovdd);
+	}
+
+	pdata->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(pdata->gpiod_reset)) {
+		dev_err(dev, "gpiod_reset gpio not found");
+		return PTR_ERR(pdata->gpiod_reset);
+	}
+
+	return 0;
+}
+
+static void it6505_parse_dt(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+	u32 *afe_setting = &it6505->afe_setting;
+
+	it6505->lane_swap_disabled =
+		device_property_read_bool(dev, "no-laneswap");
+
+	if (it6505->lane_swap_disabled)
+		it6505->lane_swap = false;
+
+	if (device_property_read_u32(dev, "afe-setting", afe_setting) == 0) {
+		if (*afe_setting >= ARRAY_SIZE(afe_setting_table)) {
+			dev_err(dev, "afe setting error, use default");
+			*afe_setting = 0;
+		}
+	} else {
+		*afe_setting = 0;
+	}
+	DRM_DEV_DEBUG_DRIVER(dev, "using afe_setting: %d", *afe_setting);
+}
+
+static ssize_t receive_timing_debugfs_show(struct file *file, char __user *buf,
+					   size_t len, loff_t *ppos)
+{
+	struct it6505 *it6505 = file->private_data;
+	struct drm_display_mode *vid = &it6505->video_info;
+	u8 read_buf[READ_BUFFER_SIZE];
+	u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
+	ssize_t ret, count;
+
+	if (!it6505)
+		return -ENODEV;
+
+	it6505_calc_video_info(it6505);
+	str += scnprintf(str, end - str, "---video timing---\n");
+	str += scnprintf(str, end - str, "PCLK:%d.%03dMHz\n",
+			 vid->clock / 1000, vid->clock % 1000);
+	str += scnprintf(str, end - str, "HTotal:%d\n", vid->htotal);
+	str += scnprintf(str, end - str, "HActive:%d\n", vid->hdisplay);
+	str += scnprintf(str, end - str, "HFrontPorch:%d\n",
+			 vid->hsync_start - vid->hdisplay);
+	str += scnprintf(str, end - str, "HSyncWidth:%d\n",
+			 vid->hsync_end - vid->hsync_start);
+	str += scnprintf(str, end - str, "HBackPorch:%d\n",
+			 vid->htotal - vid->hsync_end);
+	str += scnprintf(str, end - str, "VTotal:%d\n", vid->vtotal);
+	str += scnprintf(str, end - str, "VActive:%d\n", vid->vdisplay);
+	str += scnprintf(str, end - str, "VFrontPorch:%d\n",
+			 vid->vsync_start - vid->vdisplay);
+	str += scnprintf(str, end - str, "VSyncWidth:%d\n",
+			 vid->vsync_end - vid->vsync_start);
+	str += scnprintf(str, end - str, "VBackPorch:%d\n",
+			 vid->vtotal - vid->vsync_end);
+
+	count = str - read_buf;
+	ret = simple_read_from_buffer(buf, len, ppos, read_buf, count);
+
+	return ret;
+}
+
+static int force_power_on_off_debugfs_write(void *data, u64 value)
+{
+	struct it6505 *it6505 = data;
+
+	if (!it6505)
+		return -ENODEV;
+
+	if (value)
+		it6505_poweron(it6505);
+	else
+		it6505_poweroff(it6505);
+
+	return 0;
+}
+
+static int enable_drv_hold_debugfs_show(void *data, u64 *buf)
+{
+	struct it6505 *it6505 = data;
+
+	if (!it6505)
+		return -ENODEV;
+
+	*buf = it6505->enable_drv_hold;
+
+	return 0;
+}
+
+static int enable_drv_hold_debugfs_write(void *data, u64 drv_hold)
+{
+	struct it6505 *it6505 = data;
+
+	if (!it6505)
+		return -ENODEV;
+
+	it6505->enable_drv_hold = drv_hold;
+
+	if (it6505->enable_drv_hold) {
+		it6505_int_mask_disable(it6505);
+	} else {
+		it6505_clear_int(it6505);
+		it6505_int_mask_enable(it6505);
+
+		if (it6505->powered) {
+			it6505->connector_status =
+					it6505_get_sink_hpd_status(it6505) ?
+					connector_status_connected :
+					connector_status_disconnected;
+		} else {
+			it6505->connector_status =
+					connector_status_disconnected;
+		}
+	}
+
+	return 0;
+}
+
+static const struct file_operations receive_timing_fops = {
+	.owner = THIS_MODULE,
+	.open = simple_open,
+	.read = receive_timing_debugfs_show,
+	.llseek = default_llseek,
+};
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_force_power, NULL,
+			 force_power_on_off_debugfs_write, "%llu\n");
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_enable_drv_hold, enable_drv_hold_debugfs_show,
+			 enable_drv_hold_debugfs_write, "%llu\n");
+
+static const struct debugfs_entries debugfs_entry[] = {
+	{ "receive_timing", &receive_timing_fops },
+	{ "force_power_on_off", &fops_force_power },
+	{ "enable_drv_hold", &fops_enable_drv_hold },
+	{ NULL, NULL },
+};
+
+static void debugfs_create_files(struct it6505 *it6505)
+{
+	int i = 0;
+
+	while (debugfs_entry[i].name && debugfs_entry[i].fops) {
+		debugfs_create_file(debugfs_entry[i].name, 0644,
+				    it6505->debugfs, it6505,
+				    debugfs_entry[i].fops);
+		i++;
+	}
+}
+
+static void debugfs_init(struct it6505 *it6505)
+{
+	struct device *dev = &it6505->client->dev;
+
+	it6505->debugfs = debugfs_create_dir(DEBUGFS_DIR_NAME, NULL);
+
+	if (IS_ERR(it6505->debugfs)) {
+		dev_err(dev, "failed to create debugfs root");
+		return;
+	}
+
+	debugfs_create_files(it6505);
+}
+
+static void it6505_debugfs_remove(struct it6505 *it6505)
+{
+	debugfs_remove_recursive(it6505->debugfs);
+}
+
+static void it6505_shutdown(struct i2c_client *client)
+{
+	struct it6505 *it6505 = dev_get_drvdata(&client->dev);
+
+	if (it6505->powered)
+		it6505_lane_off(it6505);
+}
+
+static int it6505_i2c_probe(struct i2c_client *client,
+			    const struct i2c_device_id *id)
+{
+	struct it6505 *it6505;
+	struct device *dev = &client->dev;
+	struct extcon_dev *extcon;
+	int err, intp_irq;
+
+	it6505 = devm_kzalloc(&client->dev, sizeof(*it6505), GFP_KERNEL);
+	if (!it6505)
+		return -ENOMEM;
+
+	mutex_init(&it6505->extcon_lock);
+	mutex_init(&it6505->mode_lock);
+	mutex_init(&it6505->aux_lock);
+
+	it6505->bridge.of_node = client->dev.of_node;
+	it6505->connector_status = connector_status_disconnected;
+	it6505->client = client;
+	i2c_set_clientdata(client, it6505);
+
+	/* get extcon device from DTS */
+	extcon = extcon_get_edev_by_phandle(dev, 0);
+	if (PTR_ERR(extcon) == -EPROBE_DEFER)
+		return -EPROBE_DEFER;
+	if (IS_ERR(extcon)) {
+		dev_err(dev, "can not get extcon device!");
+		return PTR_ERR(extcon);
+	}
+
+	it6505->extcon = extcon;
+
+	it6505->regmap = devm_regmap_init_i2c(client, &it6505_regmap_config);
+	if (IS_ERR(it6505->regmap)) {
+		dev_err(dev, "regmap i2c init failed");
+		err = PTR_ERR(it6505->regmap);
+		return err;
+	}
+
+	err = it6505_init_pdata(it6505);
+	if (err) {
+		dev_err(dev, "Failed to initialize pdata: %d", err);
+		return err;
+	}
+
+	it6505_parse_dt(it6505);
+
+	intp_irq = client->irq;
+
+	if (!intp_irq) {
+		dev_err(dev, "Failed to get INTP IRQ");
+		err = -ENODEV;
+		return err;
+	}
+
+	err = devm_request_threaded_irq(&client->dev, intp_irq, NULL,
+					it6505_int_threaded_handler,
+					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+					"it6505-intp", it6505);
+	if (err) {
+		dev_err(dev, "Failed to request INTP threaded IRQ: %d", err);
+		return err;
+	}
+
+	INIT_WORK(&it6505->link_works, it6505_link_training_work);
+	INIT_WORK(&it6505->hdcp_wait_ksv_list, it6505_hdcp_wait_ksv_list);
+	INIT_DELAYED_WORK(&it6505->hdcp_work, it6505_hdcp_work);
+	init_completion(&it6505->wait_edid_complete);
+	memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
+	it6505->powered = false;
+	it6505->enable_drv_hold = DEFAULT_DRV_HOLD;
+
+	if (DEFAULT_PWR_ON)
+		it6505_poweron(it6505);
+
+	DRM_DEV_DEBUG_DRIVER(dev, "it6505 device name: %s", dev_name(dev));
+	debugfs_init(it6505);
+
+	it6505->bridge.funcs = &it6505_bridge_funcs;
+	it6505->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
+	it6505->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
+			     DRM_BRIDGE_OP_HPD;
+	drm_bridge_add(&it6505->bridge);
+
+	return 0;
+}
+
+static int it6505_i2c_remove(struct i2c_client *client)
+{
+	struct it6505 *it6505 = i2c_get_clientdata(client);
+
+	drm_bridge_remove(&it6505->bridge);
+	drm_dp_aux_unregister(&it6505->aux);
+	it6505_debugfs_remove(it6505);
+	it6505_poweroff(it6505);
+
+	return 0;
+}
+
+static const struct i2c_device_id it6505_id[] = {
+	{ "it6505", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, it6505_id);
+
+static const struct of_device_id it6505_of_match[] = {
+	{ .compatible = "ite,it6505" },
+	{ }
+};
+
+static struct i2c_driver it6505_i2c_driver = {
+	.driver = {
+		.name = "it6505",
+		.of_match_table = it6505_of_match,
+		.pm = &it6505_bridge_pm_ops,
+	},
+	.probe = it6505_i2c_probe,
+	.remove = it6505_i2c_remove,
+	.shutdown = it6505_shutdown,
+	.id_table = it6505_id,
+};
+
+module_i2c_driver(it6505_i2c_driver);
+
+MODULE_AUTHOR("Allen Chen <allen.chen@ite.com.tw>");
+MODULE_DESCRIPTION("IT6505 DisplayPort Transmitter driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index feb128a4557d..63df2e8a8abc 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -1164,7 +1164,11 @@ static int lt9611_probe(struct i2c_client *client,
 
 	lt9611_enable_hpd_interrupts(lt9611);
 
-	return lt9611_audio_init(dev, lt9611);
+	ret = lt9611_audio_init(dev, lt9611);
+	if (ret)
+		goto err_remove_bridge;
+
+	return 0;
 
 err_remove_bridge:
 	drm_bridge_remove(&lt9611->bridge);
diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index 5abb5ec3de46..963a6794735f 100644
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -860,18 +860,19 @@ nwl_dsi_bridge_mode_set(struct drm_bridge *bridge,
 	memcpy(&dsi->mode, adjusted_mode, sizeof(dsi->mode));
 	drm_mode_debug_printmodeline(adjusted_mode);
 
-	pm_runtime_get_sync(dev);
+	if (pm_runtime_resume_and_get(dev) < 0)
+		return;
 
 	if (clk_prepare_enable(dsi->lcdif_clk) < 0)
-		return;
+		goto runtime_put;
 	if (clk_prepare_enable(dsi->core_clk) < 0)
-		return;
+		goto runtime_put;
 
 	/* Step 1 from DSI reset-out instructions */
 	ret = reset_control_deassert(dsi->rst_pclk);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev, "Failed to deassert PCLK: %d\n", ret);
-		return;
+		goto runtime_put;
 	}
 
 	/* Step 2 from DSI reset-out instructions */
@@ -881,13 +882,18 @@ nwl_dsi_bridge_mode_set(struct drm_bridge *bridge,
 	ret = reset_control_deassert(dsi->rst_esc);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev, "Failed to deassert ESC: %d\n", ret);
-		return;
+		goto runtime_put;
 	}
 	ret = reset_control_deassert(dsi->rst_byte);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev, "Failed to deassert BYTE: %d\n", ret);
-		return;
+		goto runtime_put;
 	}
+
+	return;
+
+runtime_put:
+	pm_runtime_put_sync(dev);
 }
 
 static void
diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
index b32295abd9e7..5be057575183 100644
--- a/drivers/gpu/drm/bridge/panel.c
+++ b/drivers/gpu/drm/bridge/panel.c
@@ -138,6 +138,17 @@ static int panel_bridge_get_modes(struct drm_bridge *bridge,
 	return drm_panel_get_modes(panel_bridge->panel, connector);
 }
 
+static void panel_bridge_debugfs_init(struct drm_bridge *bridge,
+				      struct dentry *root)
+{
+	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
+	struct drm_panel *panel = panel_bridge->panel;
+
+	root = debugfs_create_dir("panel", root);
+	if (panel->funcs->debugfs_init)
+		panel->funcs->debugfs_init(panel, root);
+}
+
 static const struct drm_bridge_funcs panel_bridge_bridge_funcs = {
 	.attach = panel_bridge_attach,
 	.detach = panel_bridge_detach,
@@ -150,6 +161,7 @@ static const struct drm_bridge_funcs panel_bridge_bridge_funcs = {
 	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
 	.atomic_get_input_bus_fmts = drm_atomic_helper_bridge_propagate_bus_fmt,
+	.debugfs_init = panel_bridge_debugfs_init,
 };
 
 /**
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index b0d8110dd412..4befc104d220 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2551,8 +2551,9 @@ static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
 	if (!output_fmts)
 		return NULL;
 
-	/* If dw-hdmi is the only bridge, avoid negociating with ourselves */
-	if (list_is_singular(&bridge->encoder->bridge_chain)) {
+	/* If dw-hdmi is the first or only bridge, avoid negociating with ourselves */
+	if (list_is_singular(&bridge->encoder->bridge_chain) ||
+	    list_is_first(&bridge->chain_node, &bridge->encoder->bridge_chain)) {
 		*num_output_fmts = 1;
 		output_fmts[0] = MEDIA_BUS_FMT_FIXED;
 
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index ba136a188be7..38616aab12ac 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -26,6 +26,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/dp/drm_dp_aux_bus.h>
 #include <drm/dp/drm_dp_helper.h>
 #include <drm/drm_mipi_dsi.h>
@@ -174,7 +175,7 @@ struct ti_sn65dsi86 {
 	struct regmap			*regmap;
 	struct drm_dp_aux		aux;
 	struct drm_bridge		bridge;
-	struct drm_connector		connector;
+	struct drm_connector		*connector;
 	struct device_node		*host_node;
 	struct mipi_dsi_device		*dsi;
 	struct clk			*refclk;
@@ -646,54 +647,6 @@ static struct auxiliary_driver ti_sn_aux_driver = {
 	.id_table = ti_sn_aux_id_table,
 };
 
-/* -----------------------------------------------------------------------------
- * DRM Connector Operations
- */
-
-static struct ti_sn65dsi86 *
-connector_to_ti_sn65dsi86(struct drm_connector *connector)
-{
-	return container_of(connector, struct ti_sn65dsi86, connector);
-}
-
-static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector)
-{
-	struct ti_sn65dsi86 *pdata = connector_to_ti_sn65dsi86(connector);
-
-	return drm_bridge_get_modes(pdata->next_bridge, connector);
-}
-
-static struct drm_connector_helper_funcs ti_sn_bridge_connector_helper_funcs = {
-	.get_modes = ti_sn_bridge_connector_get_modes,
-};
-
-static const struct drm_connector_funcs ti_sn_bridge_connector_funcs = {
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.reset = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int ti_sn_bridge_connector_init(struct ti_sn65dsi86 *pdata)
-{
-	int ret;
-
-	ret = drm_connector_init(pdata->bridge.dev, &pdata->connector,
-				 &ti_sn_bridge_connector_funcs,
-				 DRM_MODE_CONNECTOR_eDP);
-	if (ret) {
-		DRM_ERROR("Failed to initialize connector with drm\n");
-		return ret;
-	}
-
-	drm_connector_helper_add(&pdata->connector,
-				 &ti_sn_bridge_connector_helper_funcs);
-	drm_connector_attach_encoder(&pdata->connector, pdata->bridge.encoder);
-
-	return 0;
-}
-
 /*------------------------------------------------------------------------------
  * DRM Bridge
  */
@@ -757,10 +710,6 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge,
 		return ret;
 	}
 
-	ret = ti_sn_bridge_connector_init(pdata);
-	if (ret < 0)
-		goto err_conn_init;
-
 	/* We never want the next bridge to *also* create a connector: */
 	flags |= DRM_BRIDGE_ATTACH_NO_CONNECTOR;
 
@@ -768,13 +717,20 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge,
 	ret = drm_bridge_attach(bridge->encoder, pdata->next_bridge,
 				&pdata->bridge, flags);
 	if (ret < 0)
-		goto err_dsi_host;
+		goto err_initted_aux;
+
+	pdata->connector = drm_bridge_connector_init(pdata->bridge.dev,
+						     pdata->bridge.encoder);
+	if (IS_ERR(pdata->connector)) {
+		ret = PTR_ERR(pdata->connector);
+		goto err_initted_aux;
+	}
+
+	drm_connector_attach_encoder(pdata->connector, pdata->bridge.encoder);
 
 	return 0;
 
-err_dsi_host:
-	drm_connector_cleanup(&pdata->connector);
-err_conn_init:
+err_initted_aux:
 	drm_dp_aux_unregister(&pdata->aux);
 	return ret;
 }
@@ -824,7 +780,7 @@ static void ti_sn_bridge_set_dsi_rate(struct ti_sn65dsi86 *pdata)
 
 static unsigned int ti_sn_bridge_get_bpp(struct ti_sn65dsi86 *pdata)
 {
-	if (pdata->connector.display_info.bpc <= 6)
+	if (pdata->connector->display_info.bpc <= 6)
 		return 18;
 	else
 		return 24;
diff --git a/drivers/gpu/drm/dp/drm_dp.c b/drivers/gpu/drm/dp/drm_dp.c
index a20b0f8f24b8..e159b81800d4 100644
--- a/drivers/gpu/drm/dp/drm_dp.c
+++ b/drivers/gpu/drm/dp/drm_dp.c
@@ -28,6 +28,7 @@
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/seq_file.h>
+#include <linux/string_helpers.h>
 
 #include <drm/dp/drm_dp_helper.h>
 #include <drm/drm_print.h>
@@ -1322,7 +1323,7 @@ void drm_dp_downstream_debug(struct seq_file *m,
 	bool branch_device = drm_dp_is_branch(dpcd);
 
 	seq_printf(m, "\tDP branch device present: %s\n",
-		   branch_device ? "yes" : "no");
+		   str_yes_no(branch_device));
 
 	if (!branch_device)
 		return;
diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index 791379816837..60923cdfe8e1 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -216,6 +216,20 @@ static void drm_bridge_connector_destroy(struct drm_connector *connector)
 	kfree(bridge_connector);
 }
 
+static void drm_bridge_connector_debugfs_init(struct drm_connector *connector,
+					      struct dentry *root)
+{
+	struct drm_bridge_connector *bridge_connector =
+		to_drm_bridge_connector(connector);
+	struct drm_encoder *encoder = bridge_connector->encoder;
+	struct drm_bridge *bridge;
+
+	list_for_each_entry(bridge, &encoder->bridge_chain, chain_node) {
+		if (bridge->funcs->debugfs_init)
+			bridge->funcs->debugfs_init(bridge, root);
+	}
+}
+
 static const struct drm_connector_funcs drm_bridge_connector_funcs = {
 	.reset = drm_atomic_helper_connector_reset,
 	.detect = drm_bridge_connector_detect,
@@ -223,6 +237,7 @@ static const struct drm_connector_funcs drm_bridge_connector_funcs = {
 	.destroy = drm_bridge_connector_destroy,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.debugfs_init = drm_bridge_connector_debugfs_init,
 };
 
 /* -----------------------------------------------------------------------------
diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c
index d60878bc9c20..72f52f293249 100644
--- a/drivers/gpu/drm/drm_buddy.c
+++ b/drivers/gpu/drm/drm_buddy.c
@@ -211,7 +211,7 @@ static int split_block(struct drm_buddy *mm,
 }
 
 static struct drm_buddy_block *
-get_buddy(struct drm_buddy_block *block)
+__get_buddy(struct drm_buddy_block *block)
 {
 	struct drm_buddy_block *parent;
 
@@ -225,6 +225,23 @@ get_buddy(struct drm_buddy_block *block)
 	return parent->left;
 }
 
+/**
+ * drm_get_buddy - get buddy address
+ *
+ * @block: DRM buddy block
+ *
+ * Returns the corresponding buddy block for @block, or NULL
+ * if this is a root block and can't be merged further.
+ * Requires some kind of locking to protect against
+ * any concurrent allocate and free operations.
+ */
+struct drm_buddy_block *
+drm_get_buddy(struct drm_buddy_block *block)
+{
+	return __get_buddy(block);
+}
+EXPORT_SYMBOL(drm_get_buddy);
+
 static void __drm_buddy_free(struct drm_buddy *mm,
 			     struct drm_buddy_block *block)
 {
@@ -233,7 +250,7 @@ static void __drm_buddy_free(struct drm_buddy *mm,
 	while ((parent = block->parent)) {
 		struct drm_buddy_block *buddy;
 
-		buddy = get_buddy(block);
+		buddy = __get_buddy(block);
 
 		if (!drm_buddy_block_is_free(buddy))
 			break;
@@ -282,34 +299,134 @@ void drm_buddy_free_list(struct drm_buddy *mm, struct list_head *objects)
 }
 EXPORT_SYMBOL(drm_buddy_free_list);
 
-/**
- * drm_buddy_alloc_blocks - allocate power-of-two blocks
- *
- * @mm: DRM buddy manager to allocate from
- * @order: size of the allocation
- *
- * The order value here translates to:
- *
- * 0 = 2^0 * mm->chunk_size
- * 1 = 2^1 * mm->chunk_size
- * 2 = 2^2 * mm->chunk_size
- *
- * Returns:
- * allocated ptr to the &drm_buddy_block on success
- */
-struct drm_buddy_block *
-drm_buddy_alloc_blocks(struct drm_buddy *mm, unsigned int order)
+static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2)
+{
+	return s1 <= e2 && e1 >= s2;
+}
+
+static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2)
+{
+	return s1 <= s2 && e1 >= e2;
+}
+
+static struct drm_buddy_block *
+alloc_range_bias(struct drm_buddy *mm,
+		 u64 start, u64 end,
+		 unsigned int order)
+{
+	struct drm_buddy_block *block;
+	struct drm_buddy_block *buddy;
+	LIST_HEAD(dfs);
+	int err;
+	int i;
+
+	end = end - 1;
+
+	for (i = 0; i < mm->n_roots; ++i)
+		list_add_tail(&mm->roots[i]->tmp_link, &dfs);
+
+	do {
+		u64 block_start;
+		u64 block_end;
+
+		block = list_first_entry_or_null(&dfs,
+						 struct drm_buddy_block,
+						 tmp_link);
+		if (!block)
+			break;
+
+		list_del(&block->tmp_link);
+
+		if (drm_buddy_block_order(block) < order)
+			continue;
+
+		block_start = drm_buddy_block_offset(block);
+		block_end = block_start + drm_buddy_block_size(mm, block) - 1;
+
+		if (!overlaps(start, end, block_start, block_end))
+			continue;
+
+		if (drm_buddy_block_is_allocated(block))
+			continue;
+
+		if (contains(start, end, block_start, block_end) &&
+		    order == drm_buddy_block_order(block)) {
+			/*
+			 * Find the free block within the range.
+			 */
+			if (drm_buddy_block_is_free(block))
+				return block;
+
+			continue;
+		}
+
+		if (!drm_buddy_block_is_split(block)) {
+			err = split_block(mm, block);
+			if (unlikely(err))
+				goto err_undo;
+		}
+
+		list_add(&block->right->tmp_link, &dfs);
+		list_add(&block->left->tmp_link, &dfs);
+	} while (1);
+
+	return ERR_PTR(-ENOSPC);
+
+err_undo:
+	/*
+	 * We really don't want to leave around a bunch of split blocks, since
+	 * bigger is better, so make sure we merge everything back before we
+	 * free the allocated blocks.
+	 */
+	buddy = __get_buddy(block);
+	if (buddy &&
+	    (drm_buddy_block_is_free(block) &&
+	     drm_buddy_block_is_free(buddy)))
+		__drm_buddy_free(mm, block);
+	return ERR_PTR(err);
+}
+
+static struct drm_buddy_block *
+get_maxblock(struct list_head *head)
+{
+	struct drm_buddy_block *max_block = NULL, *node;
+
+	max_block = list_first_entry_or_null(head,
+					     struct drm_buddy_block,
+					     link);
+	if (!max_block)
+		return NULL;
+
+	list_for_each_entry(node, head, link) {
+		if (drm_buddy_block_offset(node) >
+		    drm_buddy_block_offset(max_block))
+			max_block = node;
+	}
+
+	return max_block;
+}
+
+static struct drm_buddy_block *
+alloc_from_freelist(struct drm_buddy *mm,
+		    unsigned int order,
+		    unsigned long flags)
 {
 	struct drm_buddy_block *block = NULL;
 	unsigned int i;
 	int err;
 
 	for (i = order; i <= mm->max_order; ++i) {
-		block = list_first_entry_or_null(&mm->free_list[i],
-						 struct drm_buddy_block,
-						 link);
-		if (block)
-			break;
+		if (flags & DRM_BUDDY_TOPDOWN_ALLOCATION) {
+			block = get_maxblock(&mm->free_list[i]);
+			if (block)
+				break;
+		} else {
+			block = list_first_entry_or_null(&mm->free_list[i],
+							 struct drm_buddy_block,
+							 link);
+			if (block)
+				break;
+		}
 	}
 
 	if (!block)
@@ -320,78 +437,29 @@ drm_buddy_alloc_blocks(struct drm_buddy *mm, unsigned int order)
 	while (i != order) {
 		err = split_block(mm, block);
 		if (unlikely(err))
-			goto out_free;
+			goto err_undo;
 
-		/* Go low */
-		block = block->left;
+		block = block->right;
 		i--;
 	}
-
-	mark_allocated(block);
-	mm->avail -= drm_buddy_block_size(mm, block);
-	kmemleak_update_trace(block);
 	return block;
 
-out_free:
+err_undo:
 	if (i != order)
 		__drm_buddy_free(mm, block);
 	return ERR_PTR(err);
 }
-EXPORT_SYMBOL(drm_buddy_alloc_blocks);
-
-static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2)
-{
-	return s1 <= e2 && e1 >= s2;
-}
 
-static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2)
-{
-	return s1 <= s2 && e1 >= e2;
-}
-
-/**
- * drm_buddy_alloc_range - allocate range
- *
- * @mm: DRM buddy manager to allocate from
- * @blocks: output list head to add allocated blocks
- * @start: start of the allowed range for this block
- * @size: size of the allocation
- *
- * Intended for pre-allocating portions of the address space, for example to
- * reserve a block for the initial framebuffer or similar, hence the expectation
- * here is that drm_buddy_alloc_blocks() is still the main vehicle for
- * allocations, so if that's not the case then the drm_mm range allocator is
- * probably a much better fit, and so you should probably go use that instead.
- *
- * Note that it's safe to chain together multiple alloc_ranges
- * with the same blocks list
- *
- * Returns:
- * 0 on success, error code on failure.
- */
-int drm_buddy_alloc_range(struct drm_buddy *mm,
-			  struct list_head *blocks,
-			  u64 start, u64 size)
+static int __alloc_range(struct drm_buddy *mm,
+			 struct list_head *dfs,
+			 u64 start, u64 size,
+			 struct list_head *blocks)
 {
 	struct drm_buddy_block *block;
 	struct drm_buddy_block *buddy;
 	LIST_HEAD(allocated);
-	LIST_HEAD(dfs);
 	u64 end;
 	int err;
-	int i;
-
-	if (size < mm->chunk_size)
-		return -EINVAL;
-
-	if (!IS_ALIGNED(size | start, mm->chunk_size))
-		return -EINVAL;
-
-	if (range_overflows(start, size, mm->size))
-		return -EINVAL;
-
-	for (i = 0; i < mm->n_roots; ++i)
-		list_add_tail(&mm->roots[i]->tmp_link, &dfs);
 
 	end = start + size - 1;
 
@@ -399,7 +467,7 @@ int drm_buddy_alloc_range(struct drm_buddy *mm,
 		u64 block_start;
 		u64 block_end;
 
-		block = list_first_entry_or_null(&dfs,
+		block = list_first_entry_or_null(dfs,
 						 struct drm_buddy_block,
 						 tmp_link);
 		if (!block)
@@ -436,8 +504,8 @@ int drm_buddy_alloc_range(struct drm_buddy *mm,
 				goto err_undo;
 		}
 
-		list_add(&block->right->tmp_link, &dfs);
-		list_add(&block->left->tmp_link, &dfs);
+		list_add(&block->right->tmp_link, dfs);
+		list_add(&block->left->tmp_link, dfs);
 	} while (1);
 
 	list_splice_tail(&allocated, blocks);
@@ -449,7 +517,7 @@ err_undo:
 	 * bigger is better, so make sure we merge everything back before we
 	 * free the allocated blocks.
 	 */
-	buddy = get_buddy(block);
+	buddy = __get_buddy(block);
 	if (buddy &&
 	    (drm_buddy_block_is_free(block) &&
 	     drm_buddy_block_is_free(buddy)))
@@ -459,7 +527,189 @@ err_free:
 	drm_buddy_free_list(mm, &allocated);
 	return err;
 }
-EXPORT_SYMBOL(drm_buddy_alloc_range);
+
+static int __drm_buddy_alloc_range(struct drm_buddy *mm,
+				   u64 start,
+				   u64 size,
+				   struct list_head *blocks)
+{
+	LIST_HEAD(dfs);
+	int i;
+
+	for (i = 0; i < mm->n_roots; ++i)
+		list_add_tail(&mm->roots[i]->tmp_link, &dfs);
+
+	return __alloc_range(mm, &dfs, start, size, blocks);
+}
+
+/**
+ * drm_buddy_block_trim - free unused pages
+ *
+ * @mm: DRM buddy manager
+ * @new_size: original size requested
+ * @blocks: Input and output list of allocated blocks.
+ * MUST contain single block as input to be trimmed.
+ * On success will contain the newly allocated blocks
+ * making up the @new_size. Blocks always appear in
+ * ascending order
+ *
+ * For contiguous allocation, we round up the size to the nearest
+ * power of two value, drivers consume *actual* size, so remaining
+ * portions are unused and can be optionally freed with this function
+ *
+ * Returns:
+ * 0 on success, error code on failure.
+ */
+int drm_buddy_block_trim(struct drm_buddy *mm,
+			 u64 new_size,
+			 struct list_head *blocks)
+{
+	struct drm_buddy_block *parent;
+	struct drm_buddy_block *block;
+	LIST_HEAD(dfs);
+	u64 new_start;
+	int err;
+
+	if (!list_is_singular(blocks))
+		return -EINVAL;
+
+	block = list_first_entry(blocks,
+				 struct drm_buddy_block,
+				 link);
+
+	if (WARN_ON(!drm_buddy_block_is_allocated(block)))
+		return -EINVAL;
+
+	if (new_size > drm_buddy_block_size(mm, block))
+		return -EINVAL;
+
+	if (!new_size || !IS_ALIGNED(new_size, mm->chunk_size))
+		return -EINVAL;
+
+	if (new_size == drm_buddy_block_size(mm, block))
+		return 0;
+
+	list_del(&block->link);
+	mark_free(mm, block);
+	mm->avail += drm_buddy_block_size(mm, block);
+
+	/* Prevent recursively freeing this node */
+	parent = block->parent;
+	block->parent = NULL;
+
+	new_start = drm_buddy_block_offset(block);
+	list_add(&block->tmp_link, &dfs);
+	err =  __alloc_range(mm, &dfs, new_start, new_size, blocks);
+	if (err) {
+		mark_allocated(block);
+		mm->avail -= drm_buddy_block_size(mm, block);
+		list_add(&block->link, blocks);
+	}
+
+	block->parent = parent;
+	return err;
+}
+EXPORT_SYMBOL(drm_buddy_block_trim);
+
+/**
+ * drm_buddy_alloc_blocks - allocate power-of-two blocks
+ *
+ * @mm: DRM buddy manager to allocate from
+ * @start: start of the allowed range for this block
+ * @end: end of the allowed range for this block
+ * @size: size of the allocation
+ * @min_page_size: alignment of the allocation
+ * @blocks: output list head to add allocated blocks
+ * @flags: DRM_BUDDY_*_ALLOCATION flags
+ *
+ * alloc_range_bias() called on range limitations, which traverses
+ * the tree and returns the desired block.
+ *
+ * alloc_from_freelist() called when *no* range restrictions
+ * are enforced, which picks the block from the freelist.
+ *
+ * Returns:
+ * 0 on success, error code on failure.
+ */
+int drm_buddy_alloc_blocks(struct drm_buddy *mm,
+			   u64 start, u64 end, u64 size,
+			   u64 min_page_size,
+			   struct list_head *blocks,
+			   unsigned long flags)
+{
+	struct drm_buddy_block *block = NULL;
+	unsigned int min_order, order;
+	unsigned long pages;
+	LIST_HEAD(allocated);
+	int err;
+
+	if (size < mm->chunk_size)
+		return -EINVAL;
+
+	if (min_page_size < mm->chunk_size)
+		return -EINVAL;
+
+	if (!is_power_of_2(min_page_size))
+		return -EINVAL;
+
+	if (!IS_ALIGNED(start | end | size, mm->chunk_size))
+		return -EINVAL;
+
+	if (end > mm->size)
+		return -EINVAL;
+
+	if (range_overflows(start, size, mm->size))
+		return -EINVAL;
+
+	/* Actual range allocation */
+	if (start + size == end)
+		return __drm_buddy_alloc_range(mm, start, size, blocks);
+
+	pages = size >> ilog2(mm->chunk_size);
+	order = fls(pages) - 1;
+	min_order = ilog2(min_page_size) - ilog2(mm->chunk_size);
+
+	do {
+		order = min(order, (unsigned int)fls(pages) - 1);
+		BUG_ON(order > mm->max_order);
+		BUG_ON(order < min_order);
+
+		do {
+			if (flags & DRM_BUDDY_RANGE_ALLOCATION)
+				/* Allocate traversing within the range */
+				block = alloc_range_bias(mm, start, end, order);
+			else
+				/* Allocate from freelist */
+				block = alloc_from_freelist(mm, order, flags);
+
+			if (!IS_ERR(block))
+				break;
+
+			if (order-- == min_order) {
+				err = -ENOSPC;
+				goto err_free;
+			}
+		} while (1);
+
+		mark_allocated(block);
+		mm->avail -= drm_buddy_block_size(mm, block);
+		kmemleak_update_trace(block);
+		list_add_tail(&block->link, &allocated);
+
+		pages -= BIT(order);
+
+		if (!pages)
+			break;
+	} while (1);
+
+	list_splice_tail(&allocated, blocks);
+	return 0;
+
+err_free:
+	drm_buddy_free_list(mm, &allocated);
+	return err;
+}
+EXPORT_SYMBOL(drm_buddy_alloc_blocks);
 
 /**
  * drm_buddy_block_print - print block information
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index 4b0da6baff78..c3e6e615bf09 100644
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -112,8 +112,7 @@ drm_clflush_pages(struct page *pages[], unsigned long num_pages)
 		kunmap_atomic(page_virtual);
 	}
 #else
-	pr_err("Architecture has no drm_cache.c support\n");
-	WARN_ON_ONCE(1);
+	WARN_ONCE(1, "Architecture has no drm_cache.c support\n");
 #endif
 }
 EXPORT_SYMBOL(drm_clflush_pages);
@@ -143,8 +142,7 @@ drm_clflush_sg(struct sg_table *st)
 	if (wbinvd_on_all_cpus())
 		pr_err("Timed out waiting for cache flush\n");
 #else
-	pr_err("Architecture has no drm_cache.c support\n");
-	WARN_ON_ONCE(1);
+	WARN_ONCE(1, "Architecture has no drm_cache.c support\n");
 #endif
 }
 EXPORT_SYMBOL(drm_clflush_sg);
@@ -177,8 +175,7 @@ drm_clflush_virt_range(void *addr, unsigned long length)
 	if (wbinvd_on_all_cpus())
 		pr_err("Timed out waiting for cache flush\n");
 #else
-	pr_err("Architecture has no drm_cache.c support\n");
-	WARN_ON_ONCE(1);
+	WARN_ONCE(1, "Architecture has no drm_cache.c support\n");
 #endif
 }
 EXPORT_SYMBOL(drm_clflush_virt_range);
diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
index ced09c7c06f9..e6346a67cd98 100644
--- a/drivers/gpu/drm/drm_client_modeset.c
+++ b/drivers/gpu/drm/drm_client_modeset.c
@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/string_helpers.h>
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_client.h>
@@ -241,7 +242,7 @@ static void drm_client_connectors_enabled(struct drm_connector **connectors,
 		connector = connectors[i];
 		enabled[i] = drm_connector_enabled(connector, true);
 		DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
-			      connector->display_info.non_desktop ? "non desktop" : enabled[i] ? "yes" : "no");
+			      connector->display_info.non_desktop ? "non desktop" : str_yes_no(enabled[i]));
 
 		any_enabled |= enabled[i];
 	}
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index b0a826489488..7f1b82dbaebb 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -436,6 +436,9 @@ void drm_debugfs_connector_add(struct drm_connector *connector)
 	/* vrr range */
 	debugfs_create_file("vrr_range", S_IRUGO, root, connector,
 			    &vrr_range_fops);
+
+	if (connector->funcs->debugfs_init)
+		connector->funcs->debugfs_init(connector, root);
 }
 
 void drm_debugfs_connector_remove(struct drm_connector *connector)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index a504542238ed..a7663f9a11d2 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5340,6 +5340,9 @@ drm_reset_display_info(struct drm_connector *connector)
 	info->rgb_quant_range_selectable = false;
 	memset(&info->hdmi, 0, sizeof(info->hdmi));
 
+	info->edid_hdmi_rgb444_dc_modes = 0;
+	info->edid_hdmi_ycbcr444_dc_modes = 0;
+
 	info->non_desktop = 0;
 	memset(&info->monitor_range, 0, sizeof(info->monitor_range));
 
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 6f72627369f8..d265a73313c9 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -680,6 +680,31 @@ static void drm_fb_helper_damage(struct fb_info *info, u32 x, u32 y,
 	schedule_work(&helper->damage_work);
 }
 
+/* Convert memory region into area of scanlines and pixels per scanline */
+static void drm_fb_helper_memory_range_to_clip(struct fb_info *info, off_t off, size_t len,
+					       struct drm_rect *clip)
+{
+	off_t end = off + len;
+	u32 x1 = 0;
+	u32 y1 = off / info->fix.line_length;
+	u32 x2 = info->var.xres;
+	u32 y2 = DIV_ROUND_UP(end, info->fix.line_length);
+
+	if ((y2 - y1) == 1) {
+		/*
+		 * We've only written to a single scanline. Try to reduce
+		 * the number of horizontal pixels that need an update.
+		 */
+		off_t bit_off = (off % info->fix.line_length) * 8;
+		off_t bit_end = (end % info->fix.line_length) * 8;
+
+		x1 = bit_off / info->var.bits_per_pixel;
+		x2 = DIV_ROUND_UP(bit_end, info->var.bits_per_pixel);
+	}
+
+	drm_rect_init(clip, x1, y1, x2 - x1, y2 - y1);
+}
+
 /**
  * drm_fb_helper_deferred_io() - fbdev deferred_io callback function
  * @info: fb_info struct pointer
@@ -693,23 +718,23 @@ void drm_fb_helper_deferred_io(struct fb_info *info,
 {
 	unsigned long start, end, min, max;
 	struct page *page;
-	u32 y1, y2;
+	struct drm_rect damage_area;
 
 	min = ULONG_MAX;
 	max = 0;
 	list_for_each_entry(page, pagelist, lru) {
 		start = page->index << PAGE_SHIFT;
-		end = start + PAGE_SIZE - 1;
+		end = start + PAGE_SIZE;
 		min = min(min, start);
 		max = max(max, end);
 	}
+	if (min >= max)
+		return;
 
-	if (min < max) {
-		y1 = min / info->fix.line_length;
-		y2 = min_t(u32, DIV_ROUND_UP(max, info->fix.line_length),
-			   info->var.yres);
-		drm_fb_helper_damage(info, 0, y1, info->var.xres, y2 - y1);
-	}
+	drm_fb_helper_memory_range_to_clip(info, min, max - min, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
 }
 EXPORT_SYMBOL(drm_fb_helper_deferred_io);
 
@@ -741,11 +766,18 @@ EXPORT_SYMBOL(drm_fb_helper_sys_read);
 ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
+	loff_t pos = *ppos;
 	ssize_t ret;
+	struct drm_rect damage_area;
 
 	ret = fb_sys_write(info, buf, count, ppos);
-	if (ret > 0)
-		drm_fb_helper_damage(info, 0, 0, info->var.xres, info->var.yres);
+	if (ret <= 0)
+		return ret;
+
+	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
 
 	return ret;
 }
@@ -2224,6 +2256,7 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
 	loff_t pos = *ppos;
 	size_t total_size;
 	ssize_t ret;
+	struct drm_rect damage_area;
 	int err = 0;
 
 	if (info->screen_size)
@@ -2252,13 +2285,19 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
 	else
 		ret = fb_write_screen_buffer(info, buf, count, pos);
 
-	if (ret > 0)
-		*ppos += ret;
+	if (ret < 0)
+		return ret; /* return last error, if any */
+	else if (!ret)
+		return err; /* return previous error, if any */
 
-	if (ret > 0)
-		drm_fb_helper_damage(info, 0, 0, info->var.xres_virtual, info->var.yres_virtual);
+	*ppos += ret;
 
-	return ret ? ret : err;
+	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
+
+	return ret;
 }
 
 static void drm_fbdev_fb_fillrect(struct fb_info *info,
@@ -2346,6 +2385,7 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 	fbi->fbops = &drm_fbdev_fb_ops;
 	fbi->screen_size = sizes->surface_height * fb->pitches[0];
 	fbi->fix.smem_len = fbi->screen_size;
+	fbi->flags = FBINFO_DEFAULT;
 
 	drm_fb_helper_fill_info(fbi, fb_helper, sizes);
 
@@ -2353,19 +2393,21 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 		fbi->screen_buffer = vzalloc(fbi->screen_size);
 		if (!fbi->screen_buffer)
 			return -ENOMEM;
+		fbi->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
 
 		fbi->fbdefio = &drm_fbdev_defio;
-
 		fb_deferred_io_init(fbi);
 	} else {
 		/* buffer is mapped for HW framebuffer */
 		ret = drm_client_buffer_vmap(fb_helper->buffer, &map);
 		if (ret)
 			return ret;
-		if (map.is_iomem)
+		if (map.is_iomem) {
 			fbi->screen_base = map.vaddr_iomem;
-		else
+		} else {
 			fbi->screen_buffer = map.vaddr;
+			fbi->flags |= FBINFO_VIRTFB;
+		}
 
 		/*
 		 * Shamelessly leak the physical address to user-space. As
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 0f28dd2bdd72..bc0f49773868 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -12,9 +12,11 @@
 #include <linux/slab.h>
 #include <linux/io.h>
 
+#include <drm/drm_device.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_framebuffer.h>
 #include <drm/drm_fourcc.h>
+#include <drm/drm_print.h>
 #include <drm/drm_rect.h>
 
 static unsigned int clip_offset(const struct drm_rect *clip, unsigned int pitch, unsigned int cpp)
@@ -464,6 +466,21 @@ void drm_fb_xrgb8888_to_xrgb2101010_toio(void __iomem *dst,
 }
 EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio);
 
+static void drm_fb_xrgb8888_to_gray8_line(u8 *dst, const u32 *src, unsigned int pixels)
+{
+	unsigned int x;
+
+	for (x = 0; x < pixels; x++) {
+		u8 r = (*src & 0x00ff0000) >> 16;
+		u8 g = (*src & 0x0000ff00) >> 8;
+		u8 b =  *src & 0x000000ff;
+
+		/* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */
+		*dst++ = (3 * r + 6 * g + b) / 10;
+		src++;
+	}
+}
+
 /**
  * drm_fb_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale
  * @dst: 8-bit grayscale destination buffer
@@ -484,8 +501,9 @@ EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio);
 void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vaddr,
 			      const struct drm_framebuffer *fb, const struct drm_rect *clip)
 {
-	unsigned int len = (clip->x2 - clip->x1) * sizeof(u32);
-	unsigned int x, y;
+	unsigned int linepixels = clip->x2 - clip->x1;
+	unsigned int len = linepixels * sizeof(u32);
+	unsigned int y;
 	void *buf;
 	u8 *dst8;
 	u32 *src32;
@@ -508,16 +526,7 @@ void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vad
 	for (y = clip->y1; y < clip->y2; y++) {
 		dst8 = dst;
 		src32 = memcpy(buf, vaddr, len);
-		for (x = clip->x1; x < clip->x2; x++) {
-			u8 r = (*src32 & 0x00ff0000) >> 16;
-			u8 g = (*src32 & 0x0000ff00) >> 8;
-			u8 b =  *src32 & 0x000000ff;
-
-			/* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */
-			*dst8++ = (3 * r + 6 * g + b) / 10;
-			src32++;
-		}
-
+		drm_fb_xrgb8888_to_gray8_line(dst8, src32, linepixels);
 		vaddr += fb->pitches[0];
 		dst += dst_pitch;
 	}
@@ -584,3 +593,111 @@ int drm_fb_blit_toio(void __iomem *dst, unsigned int dst_pitch, uint32_t dst_for
 	return -EINVAL;
 }
 EXPORT_SYMBOL(drm_fb_blit_toio);
+
+static void drm_fb_gray8_to_mono_reversed_line(u8 *dst, const u8 *src, unsigned int pixels,
+					       unsigned int start_offset, unsigned int end_len)
+{
+	unsigned int xb, i;
+
+	for (xb = 0; xb < pixels; xb++) {
+		unsigned int start = 0, end = 8;
+		u8 byte = 0x00;
+
+		if (xb == 0 && start_offset)
+			start = start_offset;
+
+		if (xb == pixels - 1 && end_len)
+			end = end_len;
+
+		for (i = start; i < end; i++) {
+			unsigned int x = xb * 8 + i;
+
+			byte >>= 1;
+			if (src[x] >> 7)
+				byte |= BIT(7);
+		}
+		*dst++ = byte;
+	}
+}
+
+/**
+ * drm_fb_xrgb8888_to_mono_reversed - Convert XRGB8888 to reversed monochrome
+ * @dst: reversed monochrome destination buffer
+ * @dst_pitch: Number of bytes between two consecutive scanlines within dst
+ * @src: XRGB8888 source buffer
+ * @fb: DRM framebuffer
+ * @clip: Clip rectangle area to copy
+ *
+ * DRM doesn't have native monochrome support.
+ * Such drivers can announce the commonly supported XR24 format to userspace
+ * and use this function to convert to the native format.
+ *
+ * This function uses drm_fb_xrgb8888_to_gray8() to convert to grayscale and
+ * then the result is converted from grayscale to reversed monohrome.
+ */
+void drm_fb_xrgb8888_to_mono_reversed(void *dst, unsigned int dst_pitch, const void *vaddr,
+				      const struct drm_framebuffer *fb, const struct drm_rect *clip)
+{
+	unsigned int linepixels = drm_rect_width(clip);
+	unsigned int lines = clip->y2 - clip->y1;
+	unsigned int cpp = fb->format->cpp[0];
+	unsigned int len_src32 = linepixels * cpp;
+	struct drm_device *dev = fb->dev;
+	unsigned int start_offset, end_len;
+	unsigned int y;
+	u8 *mono = dst, *gray8;
+	u32 *src32;
+
+	if (drm_WARN_ON(dev, fb->format->format != DRM_FORMAT_XRGB8888))
+		return;
+
+	/*
+	 * The reversed mono destination buffer contains 1 bit per pixel
+	 * and destination scanlines have to be in multiple of 8 pixels.
+	 */
+	if (!dst_pitch)
+		dst_pitch = DIV_ROUND_UP(linepixels, 8);
+
+	drm_WARN_ONCE(dev, dst_pitch % 8 != 0, "dst_pitch is not a multiple of 8\n");
+
+	/*
+	 * The cma memory is write-combined so reads are uncached.
+	 * Speed up by fetching one line at a time.
+	 *
+	 * Also, format conversion from XR24 to reversed monochrome
+	 * are done line-by-line but are converted to 8-bit grayscale
+	 * as an intermediate step.
+	 *
+	 * Allocate a buffer to be used for both copying from the cma
+	 * memory and to store the intermediate grayscale line pixels.
+	 */
+	src32 = kmalloc(len_src32 + linepixels, GFP_KERNEL);
+	if (!src32)
+		return;
+
+	gray8 = (u8 *)src32 + len_src32;
+
+	/*
+	 * For damage handling, it is possible that only parts of the source
+	 * buffer is copied and this could lead to start and end pixels that
+	 * are not aligned to multiple of 8.
+	 *
+	 * Calculate if the start and end pixels are not aligned and set the
+	 * offsets for the reversed mono line conversion function to adjust.
+	 */
+	start_offset = clip->x1 % 8;
+	end_len = clip->x2 % 8;
+
+	vaddr += clip_offset(clip, fb->pitches[0], cpp);
+	for (y = 0; y < lines; y++) {
+		src32 = memcpy(src32, vaddr, len_src32);
+		drm_fb_xrgb8888_to_gray8_line(gray8, src32, linepixels);
+		drm_fb_gray8_to_mono_reversed_line(mono, gray8, dst_pitch,
+						   start_offset, end_len);
+		vaddr += fb->pitches[0];
+		mono += dst_pitch;
+	}
+
+	kfree(src32);
+}
+EXPORT_SYMBOL(drm_fb_xrgb8888_to_mono_reversed);
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 07f5abc875e9..4562a8b86579 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -309,7 +309,7 @@ drm_internal_framebuffer_create(struct drm_device *dev,
 	}
 
 	if (r->flags & DRM_MODE_FB_MODIFIERS &&
-	    !dev->mode_config.allow_fb_modifiers) {
+	    dev->mode_config.fb_modifiers_not_supported) {
 		DRM_DEBUG_KMS("driver does not support fb modifiers\n");
 		return ERR_PTR(-EINVAL);
 	}
@@ -594,7 +594,7 @@ int drm_mode_getfb2_ioctl(struct drm_device *dev,
 	r->pixel_format = fb->format->format;
 
 	r->flags = 0;
-	if (dev->mode_config.allow_fb_modifiers)
+	if (!dev->mode_config.fb_modifiers_not_supported)
 		r->flags |= DRM_MODE_FB_MODIFIERS;
 
 	for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
@@ -607,7 +607,7 @@ int drm_mode_getfb2_ioctl(struct drm_device *dev,
 	for (i = 0; i < fb->format->num_planes; i++) {
 		r->pitches[i] = fb->pitches[i];
 		r->offsets[i] = fb->offsets[i];
-		if (dev->mode_config.allow_fb_modifiers)
+		if (!dev->mode_config.fb_modifiers_not_supported)
 			r->modifier[i] = fb->modifier;
 	}
 
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 8c7b24f4b0e4..56fb87885146 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -25,20 +25,21 @@
  *
  */
 
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/module.h>
-#include <linux/mman.h>
-#include <linux/pagemap.h>
-#include <linux/shmem_fs.h>
 #include <linux/dma-buf.h>
+#include <linux/file.h>
+#include <linux/fs.h>
 #include <linux/iosys-map.h>
 #include <linux/mem_encrypt.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/pagemap.h>
 #include <linux/pagevec.h>
+#include <linux/shmem_fs.h>
+#include <linux/slab.h>
+#include <linux/string_helpers.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
 
 #include <drm/drm.h>
 #include <drm/drm_device.h>
@@ -1145,7 +1146,7 @@ void drm_gem_print_info(struct drm_printer *p, unsigned int indent,
 			  drm_vma_node_start(&obj->vma_node));
 	drm_printf_indent(p, indent, "size=%zu\n", obj->size);
 	drm_printf_indent(p, indent, "imported=%s\n",
-			  obj->import_attach ? "yes" : "no");
+			  str_yes_no(obj->import_attach));
 
 	if (obj->funcs->print_info)
 		obj->funcs->print_info(p, indent, obj);
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 3e738aea2664..8ad0e02991ca 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -46,6 +46,7 @@ static const struct drm_gem_object_funcs drm_gem_shmem_funcs = {
 	.vmap = drm_gem_shmem_object_vmap,
 	.vunmap = drm_gem_shmem_object_vunmap,
 	.mmap = drm_gem_shmem_object_mmap,
+	.vm_ops = &drm_gem_shmem_vm_ops,
 };
 
 static struct drm_gem_shmem_object *
@@ -588,11 +589,12 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
 	drm_gem_vm_close(vma);
 }
 
-static const struct vm_operations_struct drm_gem_shmem_vm_ops = {
+const struct vm_operations_struct drm_gem_shmem_vm_ops = {
 	.fault = drm_gem_shmem_fault,
 	.open = drm_gem_shmem_vm_open,
 	.close = drm_gem_shmem_vm_close,
 };
+EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_ops);
 
 /**
  * drm_gem_shmem_mmap - Memory-map a shmem GEM object
@@ -624,11 +626,10 @@ int drm_gem_shmem_mmap(struct drm_gem_shmem_object *shmem, struct vm_area_struct
 		return ret;
 	}
 
-	vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND;
+	vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
 	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 	if (shmem->map_wc)
 		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
-	vma->vm_ops = &drm_gem_shmem_vm_ops;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 8b8744dcf691..51fcf1298023 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -297,7 +297,7 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_
 			req->value = 64;
 		break;
 	case DRM_CAP_ADDFB2_MODIFIERS:
-		req->value = dev->mode_config.allow_fb_modifiers;
+		req->value = !dev->mode_config.fb_modifiers_not_supported;
 		break;
 	case DRM_CAP_CRTC_IN_VBLANK_EVENT:
 		req->value = 1;
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 1c72208d8133..96b13e36293c 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -880,7 +880,7 @@ EXPORT_SYMBOL(drm_mode_set_crtcinfo);
  * @dst: mode to overwrite
  * @src: mode to copy
  *
- * Copy an existing mode into another mode, preserving the object id and
+ * Copy an existing mode into another mode, preserving the
  * list head of the destination mode.
  */
 void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src)
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index deeec60a3315..bf0daa8d9bbd 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -237,6 +237,9 @@ static int __drm_universal_plane_init(struct drm_device *dev,
 				      const char *name, va_list ap)
 {
 	struct drm_mode_config *config = &dev->mode_config;
+	static const uint64_t default_modifiers[] = {
+		DRM_FORMAT_MOD_LINEAR,
+	};
 	unsigned int format_modifier_count = 0;
 	int ret;
 
@@ -277,16 +280,16 @@ static int __drm_universal_plane_init(struct drm_device *dev,
 
 		while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID)
 			format_modifier_count++;
+	} else {
+		if (!dev->mode_config.fb_modifiers_not_supported) {
+			format_modifiers = default_modifiers;
+			format_modifier_count = ARRAY_SIZE(default_modifiers);
+		}
 	}
 
 	/* autoset the cap and check for consistency across all planes */
-	if (format_modifier_count) {
-		drm_WARN_ON(dev, !config->allow_fb_modifiers &&
-			    !list_empty(&config->plane_list));
-		config->allow_fb_modifiers = true;
-	} else {
-		drm_WARN_ON(dev, config->allow_fb_modifiers);
-	}
+	drm_WARN_ON(dev, config->fb_modifiers_not_supported &&
+				format_modifier_count);
 
 	plane->modifier_count = format_modifier_count;
 	plane->modifiers = kmalloc_array(format_modifier_count,
@@ -341,7 +344,7 @@ static int __drm_universal_plane_init(struct drm_device *dev,
 		drm_object_attach_property(&plane->base, config->prop_src_h, 0);
 	}
 
-	if (config->allow_fb_modifiers)
+	if (format_modifier_count)
 		create_in_format_blob(dev, plane);
 
 	return 0;
@@ -368,8 +371,8 @@ static int __drm_universal_plane_init(struct drm_device *dev,
  * drm_universal_plane_init() to let the DRM managed resource infrastructure
  * take care of cleanup and deallocation.
  *
- * Drivers supporting modifiers must set @format_modifiers on all their planes,
- * even those that only support DRM_FORMAT_MOD_LINEAR.
+ * Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set
+ * @format_modifiers to NULL. The plane will advertise the linear modifier.
  *
  * Returns:
  * Zero on success, error code on failure.
diff --git a/drivers/gpu/drm/drm_privacy_screen.c b/drivers/gpu/drm/drm_privacy_screen.c
index 2b082e5e9732..6cc39e30781f 100644
--- a/drivers/gpu/drm/drm_privacy_screen.c
+++ b/drivers/gpu/drm/drm_privacy_screen.c
@@ -379,6 +379,7 @@ static void drm_privacy_screen_device_release(struct device *dev)
  * drm_privacy_screen_register - register a privacy-screen
  * @parent: parent-device for the privacy-screen
  * @ops: &struct drm_privacy_screen_ops pointer with ops for the privacy-screen
+ * @data: Private data owned by the privacy screen provider
  *
  * Create and register a privacy-screen.
  *
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index c313a5b4549c..7e48dcd1bee4 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -853,12 +853,57 @@ drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data,
 					&args->handle);
 }
 
+
+/*
+ * Try to flatten a dma_fence_chain into a dma_fence_array so that it can be
+ * added as timeline fence to a chain again.
+ */
+static int drm_syncobj_flatten_chain(struct dma_fence **f)
+{
+	struct dma_fence_chain *chain = to_dma_fence_chain(*f);
+	struct dma_fence *tmp, **fences;
+	struct dma_fence_array *array;
+	unsigned int count;
+
+	if (!chain)
+		return 0;
+
+	count = 0;
+	dma_fence_chain_for_each(tmp, &chain->base)
+		++count;
+
+	fences = kmalloc_array(count, sizeof(*fences), GFP_KERNEL);
+	if (!fences)
+		return -ENOMEM;
+
+	count = 0;
+	dma_fence_chain_for_each(tmp, &chain->base)
+		fences[count++] = dma_fence_get(tmp);
+
+	array = dma_fence_array_create(count, fences,
+				       dma_fence_context_alloc(1),
+				       1, false);
+	if (!array)
+		goto free_fences;
+
+	dma_fence_put(*f);
+	*f = &array->base;
+	return 0;
+
+free_fences:
+	while (count--)
+		dma_fence_put(fences[count]);
+
+	kfree(fences);
+	return -ENOMEM;
+}
+
 static int drm_syncobj_transfer_to_timeline(struct drm_file *file_private,
 					    struct drm_syncobj_transfer *args)
 {
 	struct drm_syncobj *timeline_syncobj = NULL;
-	struct dma_fence *fence;
 	struct dma_fence_chain *chain;
+	struct dma_fence *fence;
 	int ret;
 
 	timeline_syncobj = drm_syncobj_find(file_private, args->dst_handle);
@@ -869,16 +914,22 @@ static int drm_syncobj_transfer_to_timeline(struct drm_file *file_private,
 				     args->src_point, args->flags,
 				     &fence);
 	if (ret)
-		goto err;
+		goto err_put_timeline;
+
+	ret = drm_syncobj_flatten_chain(&fence);
+	if (ret)
+		goto err_free_fence;
+
 	chain = dma_fence_chain_alloc();
 	if (!chain) {
 		ret = -ENOMEM;
-		goto err1;
+		goto err_free_fence;
 	}
+
 	drm_syncobj_add_point(timeline_syncobj, chain, fence, args->dst_point);
-err1:
+err_free_fence:
 	dma_fence_put(fence);
-err:
+err_put_timeline:
 	drm_syncobj_put(timeline_syncobj);
 
 	return ret;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
index 58f593b278c1..35e5ef7dbdcc 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
@@ -195,7 +195,7 @@ int etnaviv_sched_init(struct etnaviv_gpu *gpu)
 	ret = drm_sched_init(&gpu->sched, &etnaviv_sched_ops,
 			     etnaviv_hw_jobs_limit, etnaviv_job_hang_limit,
 			     msecs_to_jiffies(500), NULL, NULL,
-			     dev_name(gpu->dev));
+			     dev_name(gpu->dev), gpu->dev);
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 9743b6b17447..c68498497c0b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -455,6 +455,9 @@ static int exynos_drm_init(void)
 {
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	ret = exynos_drm_register_devices();
 	if (ret)
 		return ret;
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 660fe573db96..7a503bf08d0f 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -24,6 +24,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_modeset_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -368,7 +369,7 @@ static struct platform_driver fsl_dcu_drm_platform_driver = {
 	},
 };
 
-module_platform_driver(fsl_dcu_drm_platform_driver);
+drm_module_platform_driver(fsl_dcu_drm_platform_driver);
 
 MODULE_DESCRIPTION("Freescale DCU DRM Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 65cf1c79dd7c..eeb681be9c95 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -538,6 +538,9 @@ static struct pci_driver psb_pci_driver = {
 
 static int __init psb_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	return pci_register_driver(&psb_pci_driver);
 }
 
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Kconfig b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
index 43943e980203..073adfe438dd 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Kconfig
+++ b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_HISI_HIBMC
 	tristate "DRM Support for Hisilicon Hibmc"
-	depends on DRM && PCI && ARM64
+	depends on DRM && PCI && (ARM64 || COMPILE_TEST)
 	select DRM_KMS_HELPER
 	select DRM_VRAM_HELPER
 	select DRM_TTM
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index 98ae9a48f3fe..3cf057269f2a 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -23,6 +23,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
@@ -307,7 +308,7 @@ static struct platform_driver kirin_drm_platform_driver = {
 	},
 };
 
-module_platform_driver(kirin_drm_platform_driver);
+drm_module_platform_driver(kirin_drm_platform_driver);
 
 MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
 MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
index 00e53de4812b..4a8941fa0815 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
@@ -305,6 +305,9 @@ static int __init hyperv_init(void)
 {
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	ret = pci_register_driver(&hyperv_pci_driver);
 	if (ret != 0)
 		return ret;
diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
index 247714bab044..76d5211c25eb 100644
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
@@ -36,13 +36,14 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 	struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
 	struct i915_ttm_buddy_resource *bman_res;
 	struct drm_buddy *mm = &bman->mm;
-	unsigned long n_pages;
-	unsigned int min_order;
+	unsigned long n_pages, lpfn;
 	u64 min_page_size;
 	u64 size;
 	int err;
 
-	GEM_BUG_ON(place->fpfn || place->lpfn);
+	lpfn = place->lpfn;
+	if (!lpfn)
+		lpfn = man->size;
 
 	bman_res = kzalloc(sizeof(*bman_res), GFP_KERNEL);
 	if (!bman_res)
@@ -52,6 +53,12 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 	INIT_LIST_HEAD(&bman_res->blocks);
 	bman_res->mm = mm;
 
+	if (place->flags & TTM_PL_FLAG_TOPDOWN)
+		bman_res->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION;
+
+	if (place->fpfn || lpfn != man->size)
+		bman_res->flags |= DRM_BUDDY_RANGE_ALLOCATION;
+
 	GEM_BUG_ON(!bman_res->base.num_pages);
 	size = bman_res->base.num_pages << PAGE_SHIFT;
 
@@ -60,10 +67,16 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 		min_page_size = bo->page_alignment << PAGE_SHIFT;
 
 	GEM_BUG_ON(min_page_size < mm->chunk_size);
-	min_order = ilog2(min_page_size) - ilog2(mm->chunk_size);
+
 	if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
+		unsigned long pages;
+
 		size = roundup_pow_of_two(size);
-		min_order = ilog2(size) - ilog2(mm->chunk_size);
+		min_page_size = size;
+
+		pages = size >> ilog2(mm->chunk_size);
+		if (pages > lpfn)
+			lpfn = pages;
 	}
 
 	if (size > mm->size) {
@@ -73,34 +86,26 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
 
 	n_pages = size >> ilog2(mm->chunk_size);
 
-	do {
-		struct drm_buddy_block *block;
-		unsigned int order;
-
-		order = fls(n_pages) - 1;
-		GEM_BUG_ON(order > mm->max_order);
-		GEM_BUG_ON(order < min_order);
-
-		do {
-			mutex_lock(&bman->lock);
-			block = drm_buddy_alloc_blocks(mm, order);
-			mutex_unlock(&bman->lock);
-			if (!IS_ERR(block))
-				break;
-
-			if (order-- == min_order) {
-				err = -ENOSPC;
-				goto err_free_blocks;
-			}
-		} while (1);
-
-		n_pages -= BIT(order);
+	mutex_lock(&bman->lock);
+	err = drm_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT,
+				     (u64)lpfn << PAGE_SHIFT,
+				     (u64)n_pages << PAGE_SHIFT,
+				     min_page_size,
+				     &bman_res->blocks,
+				     bman_res->flags);
+	mutex_unlock(&bman->lock);
+	if (unlikely(err))
+		goto err_free_blocks;
 
-		list_add_tail(&block->link, &bman_res->blocks);
+	if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
+		u64 original_size = (u64)bman_res->base.num_pages << PAGE_SHIFT;
 
-		if (!n_pages)
-			break;
-	} while (1);
+		mutex_lock(&bman->lock);
+		drm_buddy_block_trim(mm,
+				     original_size,
+				     &bman_res->blocks);
+		mutex_unlock(&bman->lock);
+	}
 
 	*res = &bman_res->base;
 	return 0;
@@ -268,10 +273,17 @@ int i915_ttm_buddy_man_reserve(struct ttm_resource_manager *man,
 {
 	struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
 	struct drm_buddy *mm = &bman->mm;
+	unsigned long flags = 0;
 	int ret;
 
+	flags |= DRM_BUDDY_RANGE_ALLOCATION;
+
 	mutex_lock(&bman->lock);
-	ret = drm_buddy_alloc_range(mm, &bman->reserved, start, size);
+	ret = drm_buddy_alloc_blocks(mm, start,
+				     start + size,
+				     size, mm->chunk_size,
+				     &bman->reserved,
+				     flags);
 	mutex_unlock(&bman->lock);
 
 	return ret;
diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h
index 312077941411..72c90b432e87 100644
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h
@@ -20,6 +20,7 @@ struct drm_buddy;
  *
  * @base: struct ttm_resource base class we extend
  * @blocks: the list of struct i915_buddy_block for this resource/allocation
+ * @flags: DRM_BUDDY_*_ALLOCATION flags
  * @mm: the struct i915_buddy_mm for this resource
  *
  * Extends the struct ttm_resource to manage an address space allocation with
@@ -28,6 +29,7 @@ struct drm_buddy;
 struct i915_ttm_buddy_resource {
 	struct ttm_resource base;
 	struct list_head blocks;
+	unsigned long flags;
 	struct drm_buddy *mm;
 };
 
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index cb685fe2039b..a57812ec36b1 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -341,6 +341,9 @@ static struct platform_driver * const drivers[] = {
 
 static int __init imx_drm_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
 }
 module_init(imx_drm_init);
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 542c4af70661..dcf44cb00821 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -65,8 +65,10 @@ struct ingenic_dma_hwdescs {
 struct jz_soc_info {
 	bool needs_dev_clk;
 	bool has_osd;
+	bool has_alpha;
 	bool map_noncoherent;
 	bool use_extended_hwdesc;
+	bool plane_f0_not_working;
 	unsigned int max_width, max_height;
 	const u32 *formats_f0, *formats_f1;
 	unsigned int num_formats_f0, num_formats_f1;
@@ -453,7 +455,7 @@ static int ingenic_drm_plane_atomic_check(struct drm_plane *plane,
 	if (!crtc)
 		return 0;
 
-	if (plane == &priv->f0)
+	if (priv->soc_info->plane_f0_not_working && plane == &priv->f0)
 		return -EINVAL;
 
 	crtc_state = drm_atomic_get_existing_crtc_state(state,
@@ -1055,6 +1057,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 	long parent_rate;
 	unsigned int i, clone_mask = 0;
 	int ret, irq;
+	u32 osdc = 0;
 
 	soc_info = of_device_get_match_data(dev);
 	if (!soc_info) {
@@ -1312,7 +1315,10 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 
 	/* Enable OSD if available */
 	if (soc_info->has_osd)
-		regmap_write(priv->map, JZ_REG_LCD_OSDC, JZ_LCD_OSDC_OSDEN);
+		osdc |= JZ_LCD_OSDC_OSDEN;
+	if (soc_info->has_alpha)
+		osdc |= JZ_LCD_OSDC_ALPHAEN;
+	regmap_write(priv->map, JZ_REG_LCD_OSDC, osdc);
 
 	mutex_init(&priv->clk_mutex);
 	priv->clock_nb.notifier_call = ingenic_drm_update_pixclk;
@@ -1511,7 +1517,9 @@ static const struct jz_soc_info jz4770_soc_info = {
 static const struct jz_soc_info jz4780_soc_info = {
 	.needs_dev_clk = true,
 	.has_osd = true,
+	.has_alpha = true,
 	.use_extended_hwdesc = true,
+	.plane_f0_not_working = true,	/* REVISIT */
 	.max_width = 4096,
 	.max_height = 2048,
 	.formats_f1 = jz4770_formats_f1,
@@ -1543,6 +1551,9 @@ static int ingenic_drm_init(void)
 {
 	int err;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	if (IS_ENABLED(CONFIG_DRM_INGENIC_IPU)) {
 		err = platform_driver_register(ingenic_ipu_driver_ptr);
 		if (err)
diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c
index ed2424350773..76fef0880504 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.c
+++ b/drivers/gpu/drm/kmb/kmb_drv.c
@@ -18,6 +18,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -628,7 +629,7 @@ static struct platform_driver kmb_platform_driver = {
 	},
 };
 
-module_platform_driver(kmb_platform_driver);
+drm_module_platform_driver(kmb_platform_driver);
 
 MODULE_AUTHOR("Intel Corporation");
 MODULE_DESCRIPTION("Keembay Display driver");
diff --git a/drivers/gpu/drm/lib/drm_random.c b/drivers/gpu/drm/lib/drm_random.c
index eeb155826d27..31b5a3e21911 100644
--- a/drivers/gpu/drm/lib/drm_random.c
+++ b/drivers/gpu/drm/lib/drm_random.c
@@ -7,10 +7,11 @@
 
 #include "drm_random.h"
 
-static inline u32 drm_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
+u32 drm_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
 {
 	return upper_32_bits((u64)prandom_u32_state(state) * ep_ro);
 }
+EXPORT_SYMBOL(drm_prandom_u32_max_state);
 
 void drm_random_reorder(unsigned int *order, unsigned int count,
 			struct rnd_state *state)
diff --git a/drivers/gpu/drm/lib/drm_random.h b/drivers/gpu/drm/lib/drm_random.h
index 4a3e94dfa0c0..5543bf0474bc 100644
--- a/drivers/gpu/drm/lib/drm_random.h
+++ b/drivers/gpu/drm/lib/drm_random.h
@@ -22,5 +22,7 @@ unsigned int *drm_random_order(unsigned int count,
 void drm_random_reorder(unsigned int *order,
 			unsigned int count,
 			struct rnd_state *state);
+u32 drm_prandom_u32_max_state(u32 ep_ro,
+			      struct rnd_state *state);
 
 #endif /* !__DRM_RANDOM_H__ */
diff --git a/drivers/gpu/drm/lima/lima_gem.c b/drivers/gpu/drm/lima/lima_gem.c
index d0c2b1422b3b..55bb1ec3c4f7 100644
--- a/drivers/gpu/drm/lima/lima_gem.c
+++ b/drivers/gpu/drm/lima/lima_gem.c
@@ -214,6 +214,7 @@ static const struct drm_gem_object_funcs lima_gem_funcs = {
 	.vmap = lima_gem_vmap,
 	.vunmap = drm_gem_shmem_object_vunmap,
 	.mmap = lima_gem_mmap,
+	.vm_ops = &drm_gem_shmem_vm_ops,
 };
 
 struct drm_gem_object *lima_gem_create_object(struct drm_device *dev, size_t size)
diff --git a/drivers/gpu/drm/lima/lima_sched.c b/drivers/gpu/drm/lima/lima_sched.c
index 390c969f74ad..e82931712d8a 100644
--- a/drivers/gpu/drm/lima/lima_sched.c
+++ b/drivers/gpu/drm/lima/lima_sched.c
@@ -409,7 +409,8 @@ static enum drm_gpu_sched_stat lima_sched_timedout_job(struct drm_sched_job *job
 
 	drm_sched_increase_karma(&task->base);
 
-	lima_sched_build_error_task_list(task);
+	if (lima_max_error_tasks)
+		lima_sched_build_error_task_list(task);
 
 	pipe->task_error(pipe);
 
@@ -490,7 +491,7 @@ int lima_sched_pipe_init(struct lima_sched_pipe *pipe, const char *name)
 	return drm_sched_init(&pipe->base, &lima_sched_ops, 1,
 			      lima_job_hang_limit,
 			      msecs_to_jiffies(timeout), NULL,
-			      NULL, name);
+			      NULL, name, pipe->ldev->dev);
 }
 
 void lima_sched_pipe_fini(struct lima_sched_pipe *pipe)
diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
index 5b5afc6aaf8e..0b2910e69b42 100644
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -491,6 +491,9 @@ static int __init mcde_drm_register(void)
 {
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	ret = platform_register_drivers(component_drivers,
 					ARRAY_SIZE(component_drivers));
 	if (ret)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 56ff8c57ef8f..dd029307be7d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -236,6 +236,9 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 	struct device *dma_dev;
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	if (!iommu_present(&platform_bus_type))
 		return -EPROBE_DEFER;
 
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 26aeaf0ab86e..93a7a033a3e8 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -22,6 +22,7 @@
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -542,7 +543,7 @@ static struct platform_driver meson_drm_platform_driver = {
 	},
 };
 
-module_platform_driver(meson_drm_platform_driver);
+drm_module_platform_driver(meson_drm_platform_driver);
 
 MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>");
 MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c
index 740108a006ba..217844d71ab5 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -14,6 +14,7 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_file.h>
 #include <drm/drm_ioctl.h>
+#include <drm/drm_module.h>
 #include <drm/drm_pciids.h>
 
 #include "mgag200_drv.h"
@@ -375,24 +376,7 @@ static struct pci_driver mgag200_pci_driver = {
 	.remove = mgag200_pci_remove,
 };
 
-static int __init mgag200_init(void)
-{
-	if (drm_firmware_drivers_only() && mgag200_modeset == -1)
-		return -EINVAL;
-
-	if (mgag200_modeset == 0)
-		return -EINVAL;
-
-	return pci_register_driver(&mgag200_pci_driver);
-}
-
-static void __exit mgag200_exit(void)
-{
-	pci_unregister_driver(&mgag200_pci_driver);
-}
-
-module_init(mgag200_init);
-module_exit(mgag200_exit);
+drm_module_pci_driver_if_modeset(mgag200_pci_driver, mgag200_modeset);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 555666e3f960..ff19c5a94d6f 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -512,6 +512,9 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
 	struct msm_kms *kms;
 	int ret, i;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	ddev = drm_dev_alloc(drv, dev);
 	if (IS_ERR(ddev)) {
 		DRM_DEV_ERROR(dev, "failed to allocate drm_device\n");
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
index 3bbf574c3bdc..367a6aaa3a20 100644
--- a/drivers/gpu/drm/msm/msm_ringbuffer.c
+++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
@@ -89,7 +89,7 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,
 
 	ret = drm_sched_init(&ring->sched, &msm_sched_ops,
 			num_hw_submissions, 0, sched_timeout,
-			NULL, NULL, to_msm_bo(ring->bo)->name);
+			NULL, NULL, to_msm_bo(ring->bo)->name, gpu->dev->dev);
 	if (ret) {
 		goto fail;
 	}
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 375f26d4a417..9d71c55a31c0 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -25,6 +25,7 @@
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_mode_config.h>
+#include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
@@ -258,8 +259,7 @@ static int mxsfb_load(struct drm_device *drm,
 
 	ret = mxsfb_attach_bridge(mxsfb);
 	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(drm->dev, "Cannot connect bridge: %d\n", ret);
+		dev_err_probe(drm->dev, ret, "Cannot connect bridge\n");
 		goto err_vblank;
 	}
 
@@ -419,7 +419,7 @@ static struct platform_driver mxsfb_platform_driver = {
 	},
 };
 
-module_platform_driver(mxsfb_platform_driver);
+drm_module_platform_driver(mxsfb_platform_driver);
 
 MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
 MODULE_DESCRIPTION("Freescale MXS DRM/KMS driver");
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index ae2f2abc8f5a..daf9f87477ba 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -101,7 +101,6 @@ nv40_backlight_init(struct nouveau_encoder *encoder,
 	if (!(nvif_rd32(device, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK))
 		return -ENODEV;
 
-	props->type = BACKLIGHT_RAW;
 	props->max_brightness = 31;
 	*ops = &nv40_bl_ops;
 	return 0;
@@ -294,7 +293,8 @@ nv50_backlight_init(struct nouveau_backlight *bl,
 	struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev);
 	struct nvif_object *device = &drm->client.device.object;
 
-	if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(ffs(nv_encoder->dcb->or) - 1)))
+	if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(ffs(nv_encoder->dcb->or) - 1)) ||
+	    nv_conn->base.status != connector_status_connected)
 		return -ENODEV;
 
 	if (nv_conn->type == DCB_CONNECTOR_eDP) {
@@ -342,7 +342,6 @@ nv50_backlight_init(struct nouveau_backlight *bl,
 	else
 		*ops = &nva3_bl_ops;
 
-	props->type = BACKLIGHT_RAW;
 	props->max_brightness = 100;
 
 	return 0;
@@ -410,6 +409,7 @@ nouveau_backlight_init(struct drm_connector *connector)
 		goto fail_alloc;
 	}
 
+	props.type = BACKLIGHT_RAW;
 	bl->dev = backlight_device_register(backlight_name, connector->kdev,
 					    nv_encoder, ops, &props);
 	if (IS_ERR(bl->dev)) {
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 2b460835a438..2cd0932b3d68 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -708,10 +708,12 @@ nouveau_display_create(struct drm_device *dev)
 				     &disp->disp);
 		if (ret == 0) {
 			nouveau_display_create_properties(dev);
-			if (disp->disp.object.oclass < NV50_DISP)
+			if (disp->disp.object.oclass < NV50_DISP) {
+				dev->mode_config.fb_modifiers_not_supported = true;
 				ret = nv04_display_create(dev);
-			else
+			} else {
 				ret = nv50_display_create(dev);
+			}
 		}
 	} else {
 		ret = 0;
diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 266809e511e2..46a5a1016e37 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -925,8 +925,8 @@ nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm,
 
 	mutex_lock(&svmm->mutex);
 
-	ret = nvif_object_ioctl(&svmm->vmm->vmm.object, args, sizeof(*args) +
-				npages * sizeof(args->p.phys[0]), NULL);
+	ret = nvif_object_ioctl(&svmm->vmm->vmm.object, args,
+				struct_size(args, p.phys, npages), NULL);
 
 	mutex_unlock(&svmm->mutex);
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
index a11637b0f6cc..d063d0dc13c5 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/aux.c
@@ -21,6 +21,9 @@
  *
  * Authors: Ben Skeggs
  */
+
+#include <linux/string_helpers.h>
+
 #include "aux.h"
 #include "pad.h"
 
@@ -94,7 +97,7 @@ void
 nvkm_i2c_aux_monitor(struct nvkm_i2c_aux *aux, bool monitor)
 {
 	struct nvkm_i2c_pad *pad = aux->pad;
-	AUX_TRACE(aux, "monitor: %s", monitor ? "yes" : "no");
+	AUX_TRACE(aux, "monitor: %s", str_yes_no(monitor));
 	if (monitor)
 		nvkm_i2c_pad_mode(pad, NVKM_I2C_PAD_AUX);
 	else
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 2720a58ccd90..eaf67b9e5f12 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -727,6 +727,9 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
 
 	DBG("%s", dev_name(dev));
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	/* Allocate and initialize the DRM device. */
 	ddev = drm_dev_alloc(&omap_drm_driver, dev);
 	if (IS_ERR(ddev))
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 434c2861bb40..bb2e47229c68 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -106,6 +106,7 @@ config DRM_PANEL_EDP
 	depends on PM
 	select VIDEOMODE_HELPERS
 	select DRM_DP_AUX_BUS
+	select DRM_DP_HELPER
 	help
 	  DRM panel driver for dumb eDP panels that need at most a regulator and
 	  a GPIO to be powered up. Optionally a backlight can be attached so
@@ -292,6 +293,18 @@ config DRM_PANEL_NOVATEK_NT35510
 	  around the Novatek NT35510 display controller, such as some
 	  Hydis panels.
 
+config DRM_PANEL_NOVATEK_NT35560
+	tristate "Novatek NT35560 DSI command mode panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	select VIDEOMODE_HELPERS
+	help
+	  Say Y here if you want to enable the Novatek NT35560 display
+	  controller. This panel supports DSI in both command and video
+	  mode. This supports several panels such as Sony ACX424AKM and
+	  ACX424AKP.
+
 config DRM_PANEL_NOVATEK_NT35950
 	tristate "Novatek NT35950 DSI panel"
 	depends on OF
@@ -592,17 +605,6 @@ config DRM_PANEL_SITRONIX_ST7789V
 	  Say Y here if you want to enable support for the Sitronix
 	  ST7789V controller for 240x320 LCD panels
 
-config DRM_PANEL_SONY_ACX424AKP
-	tristate "Sony ACX424AKP DSI command mode panel"
-	depends on OF
-	depends on DRM_MIPI_DSI
-	depends on BACKLIGHT_CLASS_DEVICE
-	select VIDEOMODE_HELPERS
-	help
-	  Say Y here if you want to enable the Sony ACX424 display
-	  panel. This panel supports DSI in both command and video
-	  mode.
-
 config DRM_PANEL_SONY_ACX565AKM
 	tristate "Sony ACX565AKM panel"
 	depends on GPIOLIB && OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index d99fbbce49d1..5740911f637c 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
 obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
 obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
 obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35510) += panel-novatek-nt35510.o
+obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35560) += panel-novatek-nt35560.o
 obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35950) += panel-novatek-nt35950.o
 obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36672A) += panel-novatek-nt36672a.o
 obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o
@@ -60,7 +61,6 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LS060T1SX01) += panel-sharp-ls060t1sx01.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
-obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o
 obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
 obj-$(CONFIG_DRM_PANEL_SONY_TULIP_TRULY_NT35521) += panel-sony-tulip-truly-nt35521.o
 obj-$(CONFIG_DRM_PANEL_TDO_TL070WSH30) += panel-tdo-tl070wsh30.o
diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index a394a15dc3fb..f7bfcf63d48e 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -21,6 +21,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/debugfs.h>
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
 #include <linux/iopoll.h>
@@ -222,6 +223,8 @@ struct panel_edp {
 	struct gpio_desc *enable_gpio;
 	struct gpio_desc *hpd_gpio;
 
+	const struct edp_panel_entry *detected_panel;
+
 	struct edid *edid;
 
 	struct drm_display_mode override_mode;
@@ -606,6 +609,28 @@ static int panel_edp_get_timings(struct drm_panel *panel,
 	return p->desc->num_timings;
 }
 
+static int detected_panel_show(struct seq_file *s, void *data)
+{
+	struct drm_panel *panel = s->private;
+	struct panel_edp *p = to_panel_edp(panel);
+
+	if (IS_ERR(p->detected_panel))
+		seq_puts(s, "UNKNOWN\n");
+	else if (!p->detected_panel)
+		seq_puts(s, "HARDCODED\n");
+	else
+		seq_printf(s, "%s\n", p->detected_panel->name);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(detected_panel);
+
+static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
+{
+	debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
+}
+
 static const struct drm_panel_funcs panel_edp_funcs = {
 	.disable = panel_edp_disable,
 	.unprepare = panel_edp_unprepare,
@@ -613,6 +638,7 @@ static const struct drm_panel_funcs panel_edp_funcs = {
 	.enable = panel_edp_enable,
 	.get_modes = panel_edp_get_modes,
 	.get_timings = panel_edp_get_timings,
+	.debugfs_init = panel_edp_debugfs_init,
 };
 
 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
@@ -666,7 +692,6 @@ static const struct edp_panel_entry *find_edp_panel(u32 panel_id);
 
 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
 {
-	const struct edp_panel_entry *edp_panel;
 	struct panel_desc *desc;
 	u32 panel_id;
 	char vend[4];
@@ -705,14 +730,14 @@ static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
 	}
 	drm_edid_decode_panel_id(panel_id, vend, &product_id);
 
-	edp_panel = find_edp_panel(panel_id);
+	panel->detected_panel = find_edp_panel(panel_id);
 
 	/*
 	 * We're using non-optimized timings and want it really obvious that
 	 * someone needs to add an entry to the table, so we'll do a WARN_ON
 	 * splat.
 	 */
-	if (WARN_ON(!edp_panel)) {
+	if (WARN_ON(!panel->detected_panel)) {
 		dev_warn(dev,
 			 "Unknown panel %s %#06x, using conservative timings\n",
 			 vend, product_id);
@@ -734,12 +759,14 @@ static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
 		 */
 		desc->delay.unprepare = 2000;
 		desc->delay.enable = 200;
+
+		panel->detected_panel = ERR_PTR(-EINVAL);
 	} else {
 		dev_info(dev, "Detected %s %s (%#06x)\n",
-			 vend, edp_panel->name, product_id);
+			 vend, panel->detected_panel->name, product_id);
 
 		/* Update the delay; everything else comes from EDID */
-		desc->delay = *edp_panel->delay;
+		desc->delay = *panel->detected_panel->delay;
 	}
 
 	ret = 0;
@@ -1605,6 +1632,47 @@ static const struct panel_desc sharp_lq123p1jx31 = {
 	},
 };
 
+static const struct drm_display_mode sharp_lq140m1jw46_mode[] = {
+	{
+		.clock = 346500,
+		.hdisplay = 1920,
+		.hsync_start = 1920 + 48,
+		.hsync_end = 1920 + 48 + 32,
+		.htotal = 1920 + 48 + 32 + 80,
+		.vdisplay = 1080,
+		.vsync_start = 1080 + 3,
+		.vsync_end = 1080 + 3 + 5,
+		.vtotal = 1080 + 3 + 5 + 69,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	}, {
+		.clock = 144370,
+		.hdisplay = 1920,
+		.hsync_start = 1920 + 48,
+		.hsync_end = 1920 + 48 + 32,
+		.htotal = 1920 + 48 + 32 + 80,
+		.vdisplay = 1080,
+		.vsync_start = 1080 + 3,
+		.vsync_end = 1080 + 3 + 5,
+		.vtotal = 1080 + 3 + 5 + 69,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	},
+};
+
+static const struct panel_desc sharp_lq140m1jw46 = {
+	.modes = sharp_lq140m1jw46_mode,
+	.num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode),
+	.bpc = 8,
+	.size = {
+		.width = 309,
+		.height = 174,
+	},
+	.delay = {
+		.hpd_absent = 80,
+		.enable = 50,
+		.unprepare = 500,
+	},
+};
+
 static const struct drm_display_mode starry_kr122ea0sra_mode = {
 	.clock = 147000,
 	.hdisplay = 1920,
@@ -1719,6 +1787,9 @@ static const struct of_device_id platform_of_match[] = {
 		.compatible = "sharp,lq123p1jx31",
 		.data = &sharp_lq123p1jx31,
 	}, {
+		.compatible = "sharp,lq140m1jw46",
+		.data = &sharp_lq140m1jw46,
+	}, {
 		.compatible = "starry,kr122ea0sra",
 		.data = &starry_kr122ea0sra,
 	}, {
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt35560.c b/drivers/gpu/drm/panel/panel-novatek-nt35560.c
new file mode 100644
index 000000000000..1b6042321ea1
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-novatek-nt35560.c
@@ -0,0 +1,561 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * MIPI-DSI Novatek NT35560-based panel controller.
+ *
+ * Supported panels include:
+ * Sony ACX424AKM - a 480x854 AMOLED DSI panel
+ * Sony ACX424AKP - a 480x864 AMOLED DSI panel
+ *
+ * Copyright (C) Linaro Ltd. 2019-2021
+ * Author: Linus Walleij
+ * Based on code and know-how from Marcus Lorentzon
+ * Copyright (C) ST-Ericsson SA 2010
+ * Based on code and know-how from Johan Olson and Joakim Wesslen
+ * Copyright (C) Sony Ericsson Mobile Communications 2010
+ */
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#define NT35560_DCS_READ_ID1		0xDA
+#define NT35560_DCS_READ_ID2		0xDB
+#define NT35560_DCS_READ_ID3		0xDC
+#define NT35560_DCS_SET_MDDI		0xAE
+
+/*
+ * Sony seems to use vendor ID 0x81
+ */
+#define DISPLAY_SONY_ACX424AKP_ID1	0x8103
+#define DISPLAY_SONY_ACX424AKP_ID2	0x811a
+#define DISPLAY_SONY_ACX424AKP_ID3	0x811b
+/*
+ * The fourth ID looks like a bug, vendor IDs begin at 0x80
+ * and panel 00 ... seems like default values.
+ */
+#define DISPLAY_SONY_ACX424AKP_ID4	0x8000
+
+struct nt35560_config {
+	const struct drm_display_mode *vid_mode;
+	const struct drm_display_mode *cmd_mode;
+};
+
+struct nt35560 {
+	const struct nt35560_config *conf;
+	struct drm_panel panel;
+	struct device *dev;
+	struct regulator *supply;
+	struct gpio_desc *reset_gpio;
+	bool video_mode;
+};
+
+static const struct drm_display_mode sony_acx424akp_vid_mode = {
+	.clock = 27234,
+	.hdisplay = 480,
+	.hsync_start = 480 + 15,
+	.hsync_end = 480 + 15 + 0,
+	.htotal = 480 + 15 + 0 + 15,
+	.vdisplay = 864,
+	.vsync_start = 864 + 14,
+	.vsync_end = 864 + 14 + 1,
+	.vtotal = 864 + 14 + 1 + 11,
+	.width_mm = 48,
+	.height_mm = 84,
+	.flags = DRM_MODE_FLAG_PVSYNC,
+};
+
+/*
+ * The timings are not very helpful as the display is used in
+ * command mode using the maximum HS frequency.
+ */
+static const struct drm_display_mode sony_acx424akp_cmd_mode = {
+	.clock = 35478,
+	.hdisplay = 480,
+	.hsync_start = 480 + 154,
+	.hsync_end = 480 + 154 + 16,
+	.htotal = 480 + 154 + 16 + 32,
+	.vdisplay = 864,
+	.vsync_start = 864 + 1,
+	.vsync_end = 864 + 1 + 1,
+	.vtotal = 864 + 1 + 1 + 1,
+	/*
+	 * Some desired refresh rate, experiments at the maximum "pixel"
+	 * clock speed (HS clock 420 MHz) yields around 117Hz.
+	 */
+	.width_mm = 48,
+	.height_mm = 84,
+};
+
+static const struct nt35560_config sony_acx424akp_data = {
+	.vid_mode = &sony_acx424akp_vid_mode,
+	.cmd_mode = &sony_acx424akp_cmd_mode,
+};
+
+static const struct drm_display_mode sony_acx424akm_vid_mode = {
+	.clock = 27234,
+	.hdisplay = 480,
+	.hsync_start = 480 + 15,
+	.hsync_end = 480 + 15 + 0,
+	.htotal = 480 + 15 + 0 + 15,
+	.vdisplay = 854,
+	.vsync_start = 854 + 14,
+	.vsync_end = 854 + 14 + 1,
+	.vtotal = 854 + 14 + 1 + 11,
+	.width_mm = 46,
+	.height_mm = 82,
+	.flags = DRM_MODE_FLAG_PVSYNC,
+};
+
+/*
+ * The timings are not very helpful as the display is used in
+ * command mode using the maximum HS frequency.
+ */
+static const struct drm_display_mode sony_acx424akm_cmd_mode = {
+	.clock = 35478,
+	.hdisplay = 480,
+	.hsync_start = 480 + 154,
+	.hsync_end = 480 + 154 + 16,
+	.htotal = 480 + 154 + 16 + 32,
+	.vdisplay = 854,
+	.vsync_start = 854 + 1,
+	.vsync_end = 854 + 1 + 1,
+	.vtotal = 854 + 1 + 1 + 1,
+	.width_mm = 46,
+	.height_mm = 82,
+};
+
+static const struct nt35560_config sony_acx424akm_data = {
+	.vid_mode = &sony_acx424akm_vid_mode,
+	.cmd_mode = &sony_acx424akm_cmd_mode,
+};
+
+static inline struct nt35560 *panel_to_nt35560(struct drm_panel *panel)
+{
+	return container_of(panel, struct nt35560, panel);
+}
+
+#define FOSC			20 /* 20Mhz */
+#define SCALE_FACTOR_NS_DIV_MHZ	1000
+
+static int nt35560_set_brightness(struct backlight_device *bl)
+{
+	struct nt35560 *nt = bl_get_data(bl);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(nt->dev);
+	int period_ns = 1023;
+	int duty_ns = bl->props.brightness;
+	u8 pwm_ratio;
+	u8 pwm_div;
+	u8 par;
+	int ret;
+
+	if (backlight_is_blank(bl)) {
+		/* Disable backlight */
+		par = 0x00;
+		ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+					 &par, 1);
+		if (ret) {
+			dev_err(nt->dev, "failed to disable display backlight (%d)\n", ret);
+			return ret;
+		}
+		return 0;
+	}
+
+	/* Calculate the PWM duty cycle in n/256's */
+	pwm_ratio = max(((duty_ns * 256) / period_ns) - 1, 1);
+	pwm_div = max(1,
+		      ((FOSC * period_ns) / 256) /
+		      SCALE_FACTOR_NS_DIV_MHZ);
+
+	/* Set up PWM dutycycle ONE byte (differs from the standard) */
+	dev_dbg(nt->dev, "calculated duty cycle %02x\n", pwm_ratio);
+	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+				 &pwm_ratio, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to set display PWM ratio (%d)\n", ret);
+		return ret;
+	}
+
+	/*
+	 * Sequence to write PWMDIV:
+	 *	address		data
+	 *	0xF3		0xAA   CMD2 Unlock
+	 *	0x00		0x01   Enter CMD2 page 0
+	 *	0X7D		0x01   No reload MTP of CMD2 P1
+	 *	0x22		PWMDIV
+	 *	0x7F		0xAA   CMD2 page 1 lock
+	 */
+	par = 0xaa;
+	ret = mipi_dsi_dcs_write(dsi, 0xf3, &par, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to unlock CMD 2 (%d)\n", ret);
+		return ret;
+	}
+	par = 0x01;
+	ret = mipi_dsi_dcs_write(dsi, 0x00, &par, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to enter page 1 (%d)\n", ret);
+		return ret;
+	}
+	par = 0x01;
+	ret = mipi_dsi_dcs_write(dsi, 0x7d, &par, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to disable MTP reload (%d)\n", ret);
+		return ret;
+	}
+	ret = mipi_dsi_dcs_write(dsi, 0x22, &pwm_div, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to set PWM divisor (%d)\n", ret);
+		return ret;
+	}
+	par = 0xaa;
+	ret = mipi_dsi_dcs_write(dsi, 0x7f, &par, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to lock CMD 2 (%d)\n", ret);
+		return ret;
+	}
+
+	/* Enable backlight */
+	par = 0x24;
+	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+				 &par, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to enable display backlight (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct backlight_ops nt35560_bl_ops = {
+	.update_status = nt35560_set_brightness,
+};
+
+static const struct backlight_properties nt35560_bl_props = {
+	.type = BACKLIGHT_RAW,
+	.brightness = 512,
+	.max_brightness = 1023,
+};
+
+static int nt35560_read_id(struct nt35560 *nt)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(nt->dev);
+	u8 vendor, version, panel;
+	u16 val;
+	int ret;
+
+	ret = mipi_dsi_dcs_read(dsi, NT35560_DCS_READ_ID1, &vendor, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "could not vendor ID byte\n");
+		return ret;
+	}
+	ret = mipi_dsi_dcs_read(dsi, NT35560_DCS_READ_ID2, &version, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "could not read device version byte\n");
+		return ret;
+	}
+	ret = mipi_dsi_dcs_read(dsi, NT35560_DCS_READ_ID3, &panel, 1);
+	if (ret < 0) {
+		dev_err(nt->dev, "could not read panel ID byte\n");
+		return ret;
+	}
+
+	if (vendor == 0x00) {
+		dev_err(nt->dev, "device vendor ID is zero\n");
+		return -ENODEV;
+	}
+
+	val = (vendor << 8) | panel;
+	switch (val) {
+	case DISPLAY_SONY_ACX424AKP_ID1:
+	case DISPLAY_SONY_ACX424AKP_ID2:
+	case DISPLAY_SONY_ACX424AKP_ID3:
+	case DISPLAY_SONY_ACX424AKP_ID4:
+		dev_info(nt->dev, "MTP vendor: %02x, version: %02x, panel: %02x\n",
+			 vendor, version, panel);
+		break;
+	default:
+		dev_info(nt->dev, "unknown vendor: %02x, version: %02x, panel: %02x\n",
+			 vendor, version, panel);
+		break;
+	}
+
+	return 0;
+}
+
+static int nt35560_power_on(struct nt35560 *nt)
+{
+	int ret;
+
+	ret = regulator_enable(nt->supply);
+	if (ret) {
+		dev_err(nt->dev, "failed to enable supply (%d)\n", ret);
+		return ret;
+	}
+
+	/* Assert RESET */
+	gpiod_set_value_cansleep(nt->reset_gpio, 1);
+	udelay(20);
+	/* De-assert RESET */
+	gpiod_set_value_cansleep(nt->reset_gpio, 0);
+	usleep_range(11000, 20000);
+
+	return 0;
+}
+
+static void nt35560_power_off(struct nt35560 *nt)
+{
+	/* Assert RESET */
+	gpiod_set_value_cansleep(nt->reset_gpio, 1);
+	usleep_range(11000, 20000);
+
+	regulator_disable(nt->supply);
+}
+
+static int nt35560_prepare(struct drm_panel *panel)
+{
+	struct nt35560 *nt = panel_to_nt35560(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(nt->dev);
+	const u8 mddi = 3;
+	int ret;
+
+	ret = nt35560_power_on(nt);
+	if (ret)
+		return ret;
+
+	ret = nt35560_read_id(nt);
+	if (ret) {
+		dev_err(nt->dev, "failed to read panel ID (%d)\n", ret);
+		goto err_power_off;
+	}
+
+	/* Enabe tearing mode: send TE (tearing effect) at VBLANK */
+	ret = mipi_dsi_dcs_set_tear_on(dsi,
+				       MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (ret) {
+		dev_err(nt->dev, "failed to enable vblank TE (%d)\n", ret);
+		goto err_power_off;
+	}
+
+	/*
+	 * Set MDDI
+	 *
+	 * This presumably deactivates the Qualcomm MDDI interface and
+	 * selects DSI, similar code is found in other drivers such as the
+	 * Sharp LS043T1LE01 which makes us suspect that this panel may be
+	 * using a Novatek NT35565 or similar display driver chip that shares
+	 * this command. Due to the lack of documentation we cannot know for
+	 * sure.
+	 */
+	ret = mipi_dsi_dcs_write(dsi, NT35560_DCS_SET_MDDI,
+				 &mddi, sizeof(mddi));
+	if (ret < 0) {
+		dev_err(nt->dev, "failed to set MDDI (%d)\n", ret);
+		goto err_power_off;
+	}
+
+	/* Exit sleep mode */
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret) {
+		dev_err(nt->dev, "failed to exit sleep mode (%d)\n", ret);
+		goto err_power_off;
+	}
+	msleep(140);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret) {
+		dev_err(nt->dev, "failed to turn display on (%d)\n", ret);
+		goto err_power_off;
+	}
+	if (nt->video_mode) {
+		/* In video mode turn peripheral on */
+		ret = mipi_dsi_turn_on_peripheral(dsi);
+		if (ret) {
+			dev_err(nt->dev, "failed to turn on peripheral\n");
+			goto err_power_off;
+		}
+	}
+
+	return 0;
+
+err_power_off:
+	nt35560_power_off(nt);
+	return ret;
+}
+
+static int nt35560_unprepare(struct drm_panel *panel)
+{
+	struct nt35560 *nt = panel_to_nt35560(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(nt->dev);
+	int ret;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret) {
+		dev_err(nt->dev, "failed to turn display off (%d)\n", ret);
+		return ret;
+	}
+
+	/* Enter sleep mode */
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret) {
+		dev_err(nt->dev, "failed to enter sleep mode (%d)\n", ret);
+		return ret;
+	}
+	msleep(85);
+
+	nt35560_power_off(nt);
+
+	return 0;
+}
+
+
+static int nt35560_get_modes(struct drm_panel *panel,
+			     struct drm_connector *connector)
+{
+	struct nt35560 *nt = panel_to_nt35560(panel);
+	const struct nt35560_config *conf = nt->conf;
+	struct drm_display_mode *mode;
+
+	if (nt->video_mode)
+		mode = drm_mode_duplicate(connector->dev,
+					  conf->vid_mode);
+	else
+		mode = drm_mode_duplicate(connector->dev,
+					  conf->cmd_mode);
+	if (!mode) {
+		dev_err(panel->dev, "bad mode or failed to add mode\n");
+		return -EINVAL;
+	}
+	drm_mode_set_name(mode);
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	drm_mode_probed_add(connector, mode);
+
+	return 1; /* Number of modes */
+}
+
+static const struct drm_panel_funcs nt35560_drm_funcs = {
+	.unprepare = nt35560_unprepare,
+	.prepare = nt35560_prepare,
+	.get_modes = nt35560_get_modes,
+};
+
+static int nt35560_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct nt35560 *nt;
+	int ret;
+
+	nt = devm_kzalloc(dev, sizeof(struct nt35560), GFP_KERNEL);
+	if (!nt)
+		return -ENOMEM;
+	nt->video_mode = of_property_read_bool(dev->of_node,
+						"enforce-video-mode");
+
+	mipi_dsi_set_drvdata(dsi, nt);
+	nt->dev = dev;
+
+	nt->conf = of_device_get_match_data(dev);
+	if (!nt->conf) {
+		dev_err(dev, "missing device configuration\n");
+		return -ENODEV;
+	}
+
+	dsi->lanes = 2;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	/*
+	 * FIXME: these come from the ST-Ericsson vendor driver for the
+	 * HREF520 and seems to reflect limitations in the PLLs on that
+	 * platform, if you have the datasheet, please cross-check the
+	 * actual max rates.
+	 */
+	dsi->lp_rate = 19200000;
+	dsi->hs_rate = 420160000;
+
+	if (nt->video_mode)
+		/* Burst mode using event for sync */
+		dsi->mode_flags =
+			MIPI_DSI_MODE_VIDEO |
+			MIPI_DSI_MODE_VIDEO_BURST;
+	else
+		dsi->mode_flags =
+			MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	nt->supply = devm_regulator_get(dev, "vddi");
+	if (IS_ERR(nt->supply))
+		return PTR_ERR(nt->supply);
+
+	/* This asserts RESET by default */
+	nt->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+						 GPIOD_OUT_HIGH);
+	if (IS_ERR(nt->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(nt->reset_gpio),
+				     "failed to request GPIO\n");
+
+	drm_panel_init(&nt->panel, dev, &nt35560_drm_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	nt->panel.backlight = devm_backlight_device_register(dev, "nt35560", dev, nt,
+					&nt35560_bl_ops, &nt35560_bl_props);
+	if (IS_ERR(nt->panel.backlight))
+		return dev_err_probe(dev, PTR_ERR(nt->panel.backlight),
+				     "failed to register backlight device\n");
+
+	drm_panel_add(&nt->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		drm_panel_remove(&nt->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int nt35560_remove(struct mipi_dsi_device *dsi)
+{
+	struct nt35560 *nt = mipi_dsi_get_drvdata(dsi);
+
+	mipi_dsi_detach(dsi);
+	drm_panel_remove(&nt->panel);
+
+	return 0;
+}
+
+static const struct of_device_id nt35560_of_match[] = {
+	{
+		.compatible = "sony,acx424akp",
+		.data = &sony_acx424akp_data,
+	},
+	{
+		.compatible = "sony,acx424akm",
+		.data = &sony_acx424akm_data,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, nt35560_of_match);
+
+static struct mipi_dsi_driver nt35560_driver = {
+	.probe = nt35560_probe,
+	.remove = nt35560_remove,
+	.driver = {
+		.name = "panel-novatek-nt35560",
+		.of_match_table = nt35560_of_match,
+	},
+};
+module_mipi_dsi_driver(nt35560_driver);
+
+MODULE_AUTHOR("Linus Wallei <linus.walleij@linaro.org>");
+MODULE_DESCRIPTION("MIPI-DSI Novatek NT35560 Panel Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/panel/panel-sony-acx424akp.c b/drivers/gpu/drm/panel/panel-sony-acx424akp.c
deleted file mode 100644
index 9536d56a94a5..000000000000
--- a/drivers/gpu/drm/panel/panel-sony-acx424akp.c
+++ /dev/null
@@ -1,490 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * MIPI-DSI Sony ACX424AKP panel driver. This is a 480x864
- * AMOLED panel with a command-only DSI interface.
- *
- * Copyright (C) Linaro Ltd. 2019
- * Author: Linus Walleij
- * Based on code and know-how from Marcus Lorentzon
- * Copyright (C) ST-Ericsson SA 2010
- */
-#include <linux/backlight.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/regulator/consumer.h>
-
-#include <video/mipi_display.h>
-
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_modes.h>
-#include <drm/drm_panel.h>
-
-#define ACX424_DCS_READ_ID1		0xDA
-#define ACX424_DCS_READ_ID2		0xDB
-#define ACX424_DCS_READ_ID3		0xDC
-#define ACX424_DCS_SET_MDDI		0xAE
-
-/*
- * Sony seems to use vendor ID 0x81
- */
-#define DISPLAY_SONY_ACX424AKP_ID1	0x811b
-#define DISPLAY_SONY_ACX424AKP_ID2	0x811a
-/*
- * The third ID looks like a bug, vendor IDs begin at 0x80
- * and panel 00 ... seems like default values.
- */
-#define DISPLAY_SONY_ACX424AKP_ID3	0x8000
-
-struct acx424akp {
-	struct drm_panel panel;
-	struct device *dev;
-	struct regulator *supply;
-	struct gpio_desc *reset_gpio;
-	bool video_mode;
-};
-
-static const struct drm_display_mode sony_acx424akp_vid_mode = {
-	.clock = 27234,
-	.hdisplay = 480,
-	.hsync_start = 480 + 15,
-	.hsync_end = 480 + 15 + 0,
-	.htotal = 480 + 15 + 0 + 15,
-	.vdisplay = 864,
-	.vsync_start = 864 + 14,
-	.vsync_end = 864 + 14 + 1,
-	.vtotal = 864 + 14 + 1 + 11,
-	.width_mm = 48,
-	.height_mm = 84,
-	.flags = DRM_MODE_FLAG_PVSYNC,
-};
-
-/*
- * The timings are not very helpful as the display is used in
- * command mode using the maximum HS frequency.
- */
-static const struct drm_display_mode sony_acx424akp_cmd_mode = {
-	.clock = 35478,
-	.hdisplay = 480,
-	.hsync_start = 480 + 154,
-	.hsync_end = 480 + 154 + 16,
-	.htotal = 480 + 154 + 16 + 32,
-	.vdisplay = 864,
-	.vsync_start = 864 + 1,
-	.vsync_end = 864 + 1 + 1,
-	.vtotal = 864 + 1 + 1 + 1,
-	/*
-	 * Some desired refresh rate, experiments at the maximum "pixel"
-	 * clock speed (HS clock 420 MHz) yields around 117Hz.
-	 */
-	.width_mm = 48,
-	.height_mm = 84,
-};
-
-static inline struct acx424akp *panel_to_acx424akp(struct drm_panel *panel)
-{
-	return container_of(panel, struct acx424akp, panel);
-}
-
-#define FOSC			20 /* 20Mhz */
-#define SCALE_FACTOR_NS_DIV_MHZ	1000
-
-static int acx424akp_set_brightness(struct backlight_device *bl)
-{
-	struct acx424akp *acx = bl_get_data(bl);
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
-	int period_ns = 1023;
-	int duty_ns = bl->props.brightness;
-	u8 pwm_ratio;
-	u8 pwm_div;
-	u8 par;
-	int ret;
-
-	if (backlight_is_blank(bl)) {
-		/* Disable backlight */
-		par = 0x00;
-		ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
-					 &par, 1);
-		if (ret) {
-			dev_err(acx->dev, "failed to disable display backlight (%d)\n", ret);
-			return ret;
-		}
-		return 0;
-	}
-
-	/* Calculate the PWM duty cycle in n/256's */
-	pwm_ratio = max(((duty_ns * 256) / period_ns) - 1, 1);
-	pwm_div = max(1,
-		      ((FOSC * period_ns) / 256) /
-		      SCALE_FACTOR_NS_DIV_MHZ);
-
-	/* Set up PWM dutycycle ONE byte (differs from the standard) */
-	dev_dbg(acx->dev, "calculated duty cycle %02x\n", pwm_ratio);
-	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
-				 &pwm_ratio, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to set display PWM ratio (%d)\n", ret);
-		return ret;
-	}
-
-	/*
-	 * Sequence to write PWMDIV:
-	 *	address		data
-	 *	0xF3		0xAA   CMD2 Unlock
-	 *	0x00		0x01   Enter CMD2 page 0
-	 *	0X7D		0x01   No reload MTP of CMD2 P1
-	 *	0x22		PWMDIV
-	 *	0x7F		0xAA   CMD2 page 1 lock
-	 */
-	par = 0xaa;
-	ret = mipi_dsi_dcs_write(dsi, 0xf3, &par, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to unlock CMD 2 (%d)\n", ret);
-		return ret;
-	}
-	par = 0x01;
-	ret = mipi_dsi_dcs_write(dsi, 0x00, &par, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to enter page 1 (%d)\n", ret);
-		return ret;
-	}
-	par = 0x01;
-	ret = mipi_dsi_dcs_write(dsi, 0x7d, &par, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to disable MTP reload (%d)\n", ret);
-		return ret;
-	}
-	ret = mipi_dsi_dcs_write(dsi, 0x22, &pwm_div, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to set PWM divisor (%d)\n", ret);
-		return ret;
-	}
-	par = 0xaa;
-	ret = mipi_dsi_dcs_write(dsi, 0x7f, &par, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to lock CMD 2 (%d)\n", ret);
-		return ret;
-	}
-
-	/* Enable backlight */
-	par = 0x24;
-	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
-				 &par, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to enable display backlight (%d)\n", ret);
-		return ret;
-	}
-
-	return 0;
-}
-
-static const struct backlight_ops acx424akp_bl_ops = {
-	.update_status = acx424akp_set_brightness,
-};
-
-static const struct backlight_properties acx424akp_bl_props = {
-	.type = BACKLIGHT_RAW,
-	.brightness = 512,
-	.max_brightness = 1023,
-};
-
-static int acx424akp_read_id(struct acx424akp *acx)
-{
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
-	u8 vendor, version, panel;
-	u16 val;
-	int ret;
-
-	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID1, &vendor, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "could not vendor ID byte\n");
-		return ret;
-	}
-	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID2, &version, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "could not read device version byte\n");
-		return ret;
-	}
-	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID3, &panel, 1);
-	if (ret < 0) {
-		dev_err(acx->dev, "could not read panel ID byte\n");
-		return ret;
-	}
-
-	if (vendor == 0x00) {
-		dev_err(acx->dev, "device vendor ID is zero\n");
-		return -ENODEV;
-	}
-
-	val = (vendor << 8) | panel;
-	switch (val) {
-	case DISPLAY_SONY_ACX424AKP_ID1:
-	case DISPLAY_SONY_ACX424AKP_ID2:
-	case DISPLAY_SONY_ACX424AKP_ID3:
-		dev_info(acx->dev, "MTP vendor: %02x, version: %02x, panel: %02x\n",
-			 vendor, version, panel);
-		break;
-	default:
-		dev_info(acx->dev, "unknown vendor: %02x, version: %02x, panel: %02x\n",
-			 vendor, version, panel);
-		break;
-	}
-
-	return 0;
-}
-
-static int acx424akp_power_on(struct acx424akp *acx)
-{
-	int ret;
-
-	ret = regulator_enable(acx->supply);
-	if (ret) {
-		dev_err(acx->dev, "failed to enable supply (%d)\n", ret);
-		return ret;
-	}
-
-	/* Assert RESET */
-	gpiod_set_value_cansleep(acx->reset_gpio, 1);
-	udelay(20);
-	/* De-assert RESET */
-	gpiod_set_value_cansleep(acx->reset_gpio, 0);
-	usleep_range(11000, 20000);
-
-	return 0;
-}
-
-static void acx424akp_power_off(struct acx424akp *acx)
-{
-	/* Assert RESET */
-	gpiod_set_value_cansleep(acx->reset_gpio, 1);
-	usleep_range(11000, 20000);
-
-	regulator_disable(acx->supply);
-}
-
-static int acx424akp_prepare(struct drm_panel *panel)
-{
-	struct acx424akp *acx = panel_to_acx424akp(panel);
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
-	const u8 mddi = 3;
-	int ret;
-
-	ret = acx424akp_power_on(acx);
-	if (ret)
-		return ret;
-
-	ret = acx424akp_read_id(acx);
-	if (ret) {
-		dev_err(acx->dev, "failed to read panel ID (%d)\n", ret);
-		goto err_power_off;
-	}
-
-	/* Enabe tearing mode: send TE (tearing effect) at VBLANK */
-	ret = mipi_dsi_dcs_set_tear_on(dsi,
-				       MIPI_DSI_DCS_TEAR_MODE_VBLANK);
-	if (ret) {
-		dev_err(acx->dev, "failed to enable vblank TE (%d)\n", ret);
-		goto err_power_off;
-	}
-
-	/*
-	 * Set MDDI
-	 *
-	 * This presumably deactivates the Qualcomm MDDI interface and
-	 * selects DSI, similar code is found in other drivers such as the
-	 * Sharp LS043T1LE01 which makes us suspect that this panel may be
-	 * using a Novatek NT35565 or similar display driver chip that shares
-	 * this command. Due to the lack of documentation we cannot know for
-	 * sure.
-	 */
-	ret = mipi_dsi_dcs_write(dsi, ACX424_DCS_SET_MDDI,
-				 &mddi, sizeof(mddi));
-	if (ret < 0) {
-		dev_err(acx->dev, "failed to set MDDI (%d)\n", ret);
-		goto err_power_off;
-	}
-
-	/* Exit sleep mode */
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret) {
-		dev_err(acx->dev, "failed to exit sleep mode (%d)\n", ret);
-		goto err_power_off;
-	}
-	msleep(140);
-
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret) {
-		dev_err(acx->dev, "failed to turn display on (%d)\n", ret);
-		goto err_power_off;
-	}
-	if (acx->video_mode) {
-		/* In video mode turn peripheral on */
-		ret = mipi_dsi_turn_on_peripheral(dsi);
-		if (ret) {
-			dev_err(acx->dev, "failed to turn on peripheral\n");
-			goto err_power_off;
-		}
-	}
-
-	return 0;
-
-err_power_off:
-	acx424akp_power_off(acx);
-	return ret;
-}
-
-static int acx424akp_unprepare(struct drm_panel *panel)
-{
-	struct acx424akp *acx = panel_to_acx424akp(panel);
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
-	int ret;
-
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret) {
-		dev_err(acx->dev, "failed to turn display off (%d)\n", ret);
-		return ret;
-	}
-
-	/* Enter sleep mode */
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret) {
-		dev_err(acx->dev, "failed to enter sleep mode (%d)\n", ret);
-		return ret;
-	}
-	msleep(85);
-
-	acx424akp_power_off(acx);
-
-	return 0;
-}
-
-
-static int acx424akp_get_modes(struct drm_panel *panel,
-			       struct drm_connector *connector)
-{
-	struct acx424akp *acx = panel_to_acx424akp(panel);
-	struct drm_display_mode *mode;
-
-	if (acx->video_mode)
-		mode = drm_mode_duplicate(connector->dev,
-					  &sony_acx424akp_vid_mode);
-	else
-		mode = drm_mode_duplicate(connector->dev,
-					  &sony_acx424akp_cmd_mode);
-	if (!mode) {
-		dev_err(panel->dev, "bad mode or failed to add mode\n");
-		return -EINVAL;
-	}
-	drm_mode_set_name(mode);
-	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
-
-	drm_mode_probed_add(connector, mode);
-
-	return 1; /* Number of modes */
-}
-
-static const struct drm_panel_funcs acx424akp_drm_funcs = {
-	.unprepare = acx424akp_unprepare,
-	.prepare = acx424akp_prepare,
-	.get_modes = acx424akp_get_modes,
-};
-
-static int acx424akp_probe(struct mipi_dsi_device *dsi)
-{
-	struct device *dev = &dsi->dev;
-	struct acx424akp *acx;
-	int ret;
-
-	acx = devm_kzalloc(dev, sizeof(struct acx424akp), GFP_KERNEL);
-	if (!acx)
-		return -ENOMEM;
-	acx->video_mode = of_property_read_bool(dev->of_node,
-						"enforce-video-mode");
-
-	mipi_dsi_set_drvdata(dsi, acx);
-	acx->dev = dev;
-
-	dsi->lanes = 2;
-	dsi->format = MIPI_DSI_FMT_RGB888;
-	/*
-	 * FIXME: these come from the ST-Ericsson vendor driver for the
-	 * HREF520 and seems to reflect limitations in the PLLs on that
-	 * platform, if you have the datasheet, please cross-check the
-	 * actual max rates.
-	 */
-	dsi->lp_rate = 19200000;
-	dsi->hs_rate = 420160000;
-
-	if (acx->video_mode)
-		/* Burst mode using event for sync */
-		dsi->mode_flags =
-			MIPI_DSI_MODE_VIDEO |
-			MIPI_DSI_MODE_VIDEO_BURST;
-	else
-		dsi->mode_flags =
-			MIPI_DSI_CLOCK_NON_CONTINUOUS;
-
-	acx->supply = devm_regulator_get(dev, "vddi");
-	if (IS_ERR(acx->supply))
-		return PTR_ERR(acx->supply);
-
-	/* This asserts RESET by default */
-	acx->reset_gpio = devm_gpiod_get_optional(dev, "reset",
-						  GPIOD_OUT_HIGH);
-	if (IS_ERR(acx->reset_gpio))
-		return dev_err_probe(dev, PTR_ERR(acx->reset_gpio),
-				     "failed to request GPIO\n");
-
-	drm_panel_init(&acx->panel, dev, &acx424akp_drm_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
-
-	acx->panel.backlight = devm_backlight_device_register(dev, "acx424akp", dev, acx,
-					&acx424akp_bl_ops, &acx424akp_bl_props);
-	if (IS_ERR(acx->panel.backlight))
-		return dev_err_probe(dev, PTR_ERR(acx->panel.backlight),
-				     "failed to register backlight device\n");
-
-	drm_panel_add(&acx->panel);
-
-	ret = mipi_dsi_attach(dsi);
-	if (ret < 0) {
-		drm_panel_remove(&acx->panel);
-		return ret;
-	}
-
-	return 0;
-}
-
-static int acx424akp_remove(struct mipi_dsi_device *dsi)
-{
-	struct acx424akp *acx = mipi_dsi_get_drvdata(dsi);
-
-	mipi_dsi_detach(dsi);
-	drm_panel_remove(&acx->panel);
-
-	return 0;
-}
-
-static const struct of_device_id acx424akp_of_match[] = {
-	{ .compatible = "sony,acx424akp" },
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, acx424akp_of_match);
-
-static struct mipi_dsi_driver acx424akp_driver = {
-	.probe = acx424akp_probe,
-	.remove = acx424akp_remove,
-	.driver = {
-		.name = "panel-sony-acx424akp",
-		.of_match_table = acx424akp_of_match,
-	},
-};
-module_mipi_dsi_driver(acx424akp_driver);
-
-MODULE_AUTHOR("Linus Wallei <linus.walleij@linaro.org>");
-MODULE_DESCRIPTION("MIPI-DSI Sony acx424akp Panel Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/panfrost/panfrost_features.h b/drivers/gpu/drm/panfrost/panfrost_features.h
index 34f2bae1ec8c..36fadcf9634e 100644
--- a/drivers/gpu/drm/panfrost/panfrost_features.h
+++ b/drivers/gpu/drm/panfrost/panfrost_features.h
@@ -20,6 +20,7 @@ enum panfrost_hw_feature {
 	HW_FEATURE_AARCH64_MMU,
 	HW_FEATURE_TLS_HASHING,
 	HW_FEATURE_THREAD_GROUP_SPLIT,
+	HW_FEATURE_IDVS_GROUP_SIZE,
 	HW_FEATURE_3BIT_EXT_RW_L2_MMU_CONFIG,
 };
 
@@ -74,6 +75,7 @@ enum panfrost_hw_feature {
 	BIT_ULL(HW_FEATURE_FLUSH_REDUCTION) | \
 	BIT_ULL(HW_FEATURE_PROTECTED_MODE) | \
 	BIT_ULL(HW_FEATURE_PROTECTED_DEBUG_MODE) | \
+	BIT_ULL(HW_FEATURE_IDVS_GROUP_SIZE) | \
 	BIT_ULL(HW_FEATURE_COHERENCY_REG))
 
 #define hw_features_g76 (\
@@ -87,6 +89,7 @@ enum panfrost_hw_feature {
 	BIT_ULL(HW_FEATURE_COHERENCY_REG) | \
 	BIT_ULL(HW_FEATURE_AARCH64_MMU) | \
 	BIT_ULL(HW_FEATURE_TLS_HASHING) | \
+	BIT_ULL(HW_FEATURE_IDVS_GROUP_SIZE) | \
 	BIT_ULL(HW_FEATURE_3BIT_EXT_RW_L2_MMU_CONFIG))
 
 #define hw_features_g31 (\
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index ead65f5fa2bc..293e799e2fe8 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -206,6 +206,7 @@ static const struct drm_gem_object_funcs panfrost_gem_funcs = {
 	.vmap = drm_gem_shmem_object_vmap,
 	.vunmap = drm_gem_shmem_object_vunmap,
 	.mmap = drm_gem_shmem_object_mmap,
+	.vm_ops = &drm_gem_shmem_vm_ops,
 };
 
 /**
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index 15cec831a99a..aa89926742fd 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
@@ -145,6 +145,9 @@ static void panfrost_gpu_init_quirks(struct panfrost_device *pfdev)
 		quirks |= (COHERENCY_ACE_LITE | COHERENCY_ACE) <<
 			   JM_FORCE_COHERENCY_FEATURES_SHIFT;
 
+	if (panfrost_has_hw_feature(pfdev, HW_FEATURE_IDVS_GROUP_SIZE))
+		quirks |= JM_DEFAULT_IDVS_GROUP_SIZE << JM_IDVS_GROUP_SIZE_SHIFT;
+
 	if (quirks)
 		gpu_write(pfdev, GPU_JM_CONFIG, quirks);
 
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 908d79520853..a6925dbb6224 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -812,7 +812,7 @@ int panfrost_job_init(struct panfrost_device *pfdev)
 				     nentries, 0,
 				     msecs_to_jiffies(JOB_TIMEOUT_MS),
 				     pfdev->reset.wq,
-				     NULL, "pan_js");
+				     NULL, "pan_js", pfdev->dev);
 		if (ret) {
 			dev_err(pfdev->dev, "Failed to create scheduler: %d.", ret);
 			goto err_sched;
diff --git a/drivers/gpu/drm/panfrost/panfrost_regs.h b/drivers/gpu/drm/panfrost/panfrost_regs.h
index 6c5a11ef1ee8..16e776cc82ea 100644
--- a/drivers/gpu/drm/panfrost/panfrost_regs.h
+++ b/drivers/gpu/drm/panfrost/panfrost_regs.h
@@ -208,6 +208,7 @@
 #define JM_MAX_JOB_THROTTLE_LIMIT	0x3F
 #define JM_FORCE_COHERENCY_FEATURES_SHIFT 2
 #define JM_IDVS_GROUP_SIZE_SHIFT	16
+#define JM_DEFAULT_IDVS_GROUP_SIZE	0xF
 #define JM_MAX_IDVS_GROUP_SIZE		0x3F
 
 
diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
index e4b16421500b..1cb6f0c224bb 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.c
+++ b/drivers/gpu/drm/qxl/qxl_drv.c
@@ -39,6 +39,7 @@
 #include <drm/drm_drv.h>
 #include <drm/drm_file.h>
 #include <drm/drm_gem_ttm_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_modeset_helper.h>
 #include <drm/drm_prime.h>
 #include <drm/drm_probe_helper.h>
@@ -269,6 +270,16 @@ static struct pci_driver qxl_pci_driver = {
 	 .driver.pm = &qxl_pm_ops,
 };
 
+static const struct drm_ioctl_desc qxl_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH),
+};
+
 static struct drm_driver qxl_driver = {
 	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
 
@@ -282,6 +293,7 @@ static struct drm_driver qxl_driver = {
 	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
 	.fops = &qxl_fops,
 	.ioctls = qxl_ioctls,
+	.num_ioctls = ARRAY_SIZE(qxl_ioctls),
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
 	.date = DRIVER_DATE,
@@ -292,24 +304,7 @@ static struct drm_driver qxl_driver = {
 	.release = qxl_drm_release,
 };
 
-static int __init qxl_init(void)
-{
-	if (drm_firmware_drivers_only() && qxl_modeset == -1)
-		return -EINVAL;
-
-	if (qxl_modeset == 0)
-		return -EINVAL;
-	qxl_driver.num_ioctls = qxl_max_ioctls;
-	return pci_register_driver(&qxl_pci_driver);
-}
-
-static void __exit qxl_exit(void)
-{
-	pci_unregister_driver(&qxl_pci_driver);
-}
-
-module_init(qxl_init);
-module_exit(qxl_exit);
+drm_module_pci_driver_if_modeset(qxl_pci_driver, qxl_modeset);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index 9796099ff18f..47c169673088 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -65,7 +65,6 @@ struct iosys_map;
 #define QXL_DEBUGFS_MAX_COMPONENTS		32
 
 extern int qxl_num_crtc;
-extern int qxl_max_ioctls;
 
 #define QXL_INTERRUPT_MASK (\
 	QXL_INTERRUPT_DISPLAY |\
@@ -261,9 +260,6 @@ struct qxl_device {
 
 int qxl_debugfs_fence_init(struct qxl_device *rdev);
 
-extern const struct drm_ioctl_desc qxl_ioctls[];
-extern int qxl_max_ioctl;
-
 int qxl_device_init(struct qxl_device *qdev, struct pci_dev *pdev);
 void qxl_device_fini(struct qxl_device *qdev);
 
@@ -457,4 +453,13 @@ struct qxl_drv_surface *
 qxl_surface_lookup(struct drm_device *dev, int surface_id);
 void qxl_surface_evict(struct qxl_device *qdev, struct qxl_bo *surf, bool freeing);
 
+/* qxl_ioctl.c */
+int qxl_alloc_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
+int qxl_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
+int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
+int qxl_update_area_ioctl(struct drm_device *dev, void *data, struct drm_file *file);
+int qxl_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
+int qxl_clientcap_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
+int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, struct drm_file *file);
+
 #endif
diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
index 38aabcbe2238..30f58b21372a 100644
--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
+++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
@@ -33,8 +33,7 @@
  * TODO: allocating a new gem(in qxl_bo) for each request.
  * This is wasteful since bo's are page aligned.
  */
-static int qxl_alloc_ioctl(struct drm_device *dev, void *data,
-			   struct drm_file *file_priv)
+int qxl_alloc_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct drm_qxl_alloc *qxl_alloc = data;
@@ -61,8 +60,7 @@ static int qxl_alloc_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
-static int qxl_map_ioctl(struct drm_device *dev, void *data,
-			 struct drm_file *file_priv)
+int qxl_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct drm_qxl_map *qxl_map = data;
@@ -272,8 +270,7 @@ out_free_reloc:
 	return ret;
 }
 
-static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
-				struct drm_file *file_priv)
+int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct drm_qxl_execbuffer *execbuffer = data;
@@ -297,8 +294,7 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
-static int qxl_update_area_ioctl(struct drm_device *dev, void *data,
-				 struct drm_file *file)
+int qxl_update_area_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct drm_qxl_update_area *update_area = data;
@@ -347,8 +343,7 @@ out:
 	return ret;
 }
 
-static int qxl_getparam_ioctl(struct drm_device *dev, void *data,
-		       struct drm_file *file_priv)
+int qxl_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct drm_qxl_getparam *param = data;
@@ -366,8 +361,7 @@ static int qxl_getparam_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
-static int qxl_clientcap_ioctl(struct drm_device *dev, void *data,
-				  struct drm_file *file_priv)
+int qxl_clientcap_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
@@ -388,8 +382,7 @@ static int qxl_clientcap_ioctl(struct drm_device *dev, void *data,
 	return -ENOSYS;
 }
 
-static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data,
-				struct drm_file *file)
+int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 {
 	struct qxl_device *qdev = to_qxl(dev);
 	struct drm_qxl_alloc_surf *param = data;
@@ -422,23 +415,3 @@ static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data,
 		param->handle = handle;
 	return ret;
 }
-
-const struct drm_ioctl_desc qxl_ioctls[] = {
-	DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH),
-
-	DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH),
-
-	DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl,
-							DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl,
-							DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl,
-							DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl,
-							DRM_AUTH),
-
-	DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl,
-			  DRM_AUTH),
-};
-
-int qxl_max_ioctls = ARRAY_SIZE(qxl_ioctls);
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index f15b20da5315..c1bbfbe28bda 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <linux/string_helpers.h>
 
 #include <asm/unaligned.h>
 
@@ -722,7 +723,7 @@ static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
 		break;
 	}
 	if (arg != ATOM_COND_ALWAYS)
-		SDEBUG("   taken: %s\n", execute ? "yes" : "no");
+		SDEBUG("   taken: %s\n", str_yes_no(execute));
 	SDEBUG("   target: 0x%04X\n", target);
 	if (execute) {
 		if (ctx->last_jump == (ctx->start + target)) {
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 895776c421d4..08f83bf2c330 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2462,8 +2462,6 @@ struct radeon_device {
 	struct radeon_vm_manager	vm_manager;
 	struct mutex			gpu_clock_mutex;
 	/* memory stats */
-	atomic64_t			vram_usage;
-	atomic64_t			gtt_usage;
 	atomic64_t			num_bytes_moved;
 	atomic_t			gpu_reset_counter;
 	/* ACPI interface */
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 573154268d43..b9a07677a71e 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1596,6 +1596,8 @@ int radeon_modeset_init(struct radeon_device *rdev)
 	rdev->ddev->mode_config.preferred_depth = 24;
 	rdev->ddev->mode_config.prefer_shadow = 1;
 
+	rdev->ddev->mode_config.fb_modifiers_not_supported = true;
+
 	rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
 
 	ret = radeon_modeset_create_props(rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 11ad210919c8..965161b8565b 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -241,6 +241,7 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	struct drm_radeon_info *info = data;
 	struct radeon_mode_info *minfo = &rdev->mode_info;
 	uint32_t *value, value_tmp, *value_ptr, value_size;
+	struct ttm_resource_manager *man;
 	uint64_t value64;
 	struct drm_crtc *crtc;
 	int i, found;
@@ -550,12 +551,14 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	case RADEON_INFO_VRAM_USAGE:
 		value = (uint32_t*)&value64;
 		value_size = sizeof(uint64_t);
-		value64 = atomic64_read(&rdev->vram_usage);
+		man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM);
+		value64 = ttm_resource_manager_usage(man);
 		break;
 	case RADEON_INFO_GTT_USAGE:
 		value = (uint32_t*)&value64;
 		value_size = sizeof(uint64_t);
-		value64 = atomic64_read(&rdev->gtt_usage);
+		man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_TT);
+		value64 = ttm_resource_manager_usage(man);
 		break;
 	case RADEON_INFO_ACTIVE_CU_COUNT:
 		if (rdev->family >= CHIP_BONAIRE)
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 87536d205593..91a72cd14304 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -49,27 +49,6 @@ static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);
  * function are calling it.
  */
 
-static void radeon_update_memory_usage(struct ttm_buffer_object *bo,
-				       unsigned int mem_type, int sign)
-{
-	struct radeon_device *rdev = radeon_get_rdev(bo->bdev);
-
-	switch (mem_type) {
-	case TTM_PL_TT:
-		if (sign > 0)
-			atomic64_add(bo->base.size, &rdev->gtt_usage);
-		else
-			atomic64_sub(bo->base.size, &rdev->gtt_usage);
-		break;
-	case TTM_PL_VRAM:
-		if (sign > 0)
-			atomic64_add(bo->base.size, &rdev->vram_usage);
-		else
-			atomic64_sub(bo->base.size, &rdev->vram_usage);
-		break;
-	}
-}
-
 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
 {
 	struct radeon_bo *bo;
@@ -434,7 +413,9 @@ void radeon_bo_fini(struct radeon_device *rdev)
 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev)
 {
 	u64 real_vram_size = rdev->mc.real_vram_size;
-	u64 vram_usage = atomic64_read(&rdev->vram_usage);
+	struct ttm_resource_manager *man =
+		ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM);
+	u64 vram_usage = ttm_resource_manager_usage(man);
 
 	/* This function is based on the current VRAM usage.
 	 *
@@ -723,16 +704,10 @@ int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 	return radeon_bo_get_surface_reg(bo);
 }
 
-void radeon_bo_move_notify(struct ttm_buffer_object *bo,
-			   unsigned int old_type,
-			   struct ttm_resource *new_mem)
+void radeon_bo_move_notify(struct ttm_buffer_object *bo)
 {
 	struct radeon_bo *rbo;
 
-	radeon_update_memory_usage(bo, old_type, -1);
-	if (new_mem)
-		radeon_update_memory_usage(bo, new_mem->mem_type, 1);
-
 	if (!radeon_ttm_bo_is_radeon_bo(bo))
 		return;
 
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
index 1afc7992ef91..0a6ef49e990a 100644
--- a/drivers/gpu/drm/radeon/radeon_object.h
+++ b/drivers/gpu/drm/radeon/radeon_object.h
@@ -160,9 +160,7 @@ extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 				u32 *tiling_flags, u32 *pitch);
 extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 				bool force_drop);
-extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
-				  unsigned int old_type,
-				  struct ttm_resource *new_mem);
+extern void radeon_bo_move_notify(struct ttm_buffer_object *bo);
 extern vm_fault_t radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
 extern void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 0d1283cdc8fb..44594d16611f 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -199,7 +199,7 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 	struct ttm_resource *old_mem = bo->resource;
 	struct radeon_device *rdev;
 	struct radeon_bo *rbo;
-	int r, old_type;
+	int r;
 
 	if (new_mem->mem_type == TTM_PL_TT) {
 		r = radeon_ttm_tt_bind(bo->bdev, bo->ttm, new_mem);
@@ -216,9 +216,6 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 	if (WARN_ON_ONCE(rbo->tbo.pin_count > 0))
 		return -EINVAL;
 
-	/* Save old type for statistics update */
-	old_type = old_mem->mem_type;
-
 	rdev = radeon_get_rdev(bo->bdev);
 	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
 		ttm_bo_move_null(bo, new_mem);
@@ -264,7 +261,7 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 out:
 	/* update statistics */
 	atomic64_add(bo->base.size, &rdev->num_bytes_moved);
-	radeon_bo_move_notify(bo, old_type, new_mem);
+	radeon_bo_move_notify(bo);
 	return 0;
 }
 
@@ -679,16 +676,6 @@ bool radeon_ttm_tt_is_readonly(struct radeon_device *rdev,
 	return !!(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
 }
 
-static void
-radeon_bo_delete_mem_notify(struct ttm_buffer_object *bo)
-{
-	unsigned int old_type = TTM_PL_SYSTEM;
-
-	if (bo->resource)
-		old_type = bo->resource->mem_type;
-	radeon_bo_move_notify(bo, old_type, NULL);
-}
-
 static struct ttm_device_funcs radeon_bo_driver = {
 	.ttm_tt_create = &radeon_ttm_tt_create,
 	.ttm_tt_populate = &radeon_ttm_tt_populate,
@@ -697,7 +684,6 @@ static struct ttm_device_funcs radeon_bo_driver = {
 	.eviction_valuable = ttm_bo_eviction_valuable,
 	.evict_flags = &radeon_evict_flags,
 	.move = &radeon_bo_move,
-	.delete_mem_notify = &radeon_bo_delete_mem_notify,
 	.io_mem_reserve = &radeon_ttm_io_mem_reserve,
 };
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 5a8131ef81d5..982e450233ed 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -701,6 +701,9 @@ static struct platform_driver rcar_du_platform_driver = {
 
 static int __init rcar_du_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	rcar_du_of_init(rcar_du_of_table);
 
 	return platform_driver_register(&rcar_du_platform_driver);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index bec207de4544..ac190e2b1f7a 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -457,6 +457,9 @@ static int __init rockchip_drm_init(void)
 {
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	num_rockchip_sub_drivers = 0;
 	ADD_ROCKCHIP_SUB_DRIVER(vop_platform_driver, CONFIG_DRM_ROCKCHIP);
 	ADD_ROCKCHIP_SUB_DRIVER(rockchip_lvds_driver,
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index f91fb31ab7a7..b81fceb0b8a2 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -491,7 +491,7 @@ void drm_sched_start(struct drm_gpu_scheduler *sched, bool full_recovery)
 			if (r == -ENOENT)
 				drm_sched_job_done(s_job);
 			else if (r)
-				DRM_ERROR("fence add callback failed (%d)\n",
+				DRM_DEV_ERROR(sched->dev, "fence add callback failed (%d)\n",
 					  r);
 		} else
 			drm_sched_job_done(s_job);
@@ -957,7 +957,7 @@ static int drm_sched_main(void *param)
 			if (r == -ENOENT)
 				drm_sched_job_done(sched_job);
 			else if (r)
-				DRM_ERROR("fence add callback failed (%d)\n",
+				DRM_DEV_ERROR(sched->dev, "fence add callback failed (%d)\n",
 					  r);
 			dma_fence_put(fence);
 		} else {
@@ -991,7 +991,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched,
 		   const struct drm_sched_backend_ops *ops,
 		   unsigned hw_submission, unsigned hang_limit,
 		   long timeout, struct workqueue_struct *timeout_wq,
-		   atomic_t *score, const char *name)
+		   atomic_t *score, const char *name, struct device *dev)
 {
 	int i, ret;
 	sched->ops = ops;
@@ -1001,6 +1001,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched,
 	sched->timeout_wq = timeout_wq ? : system_wq;
 	sched->hang_limit = hang_limit;
 	sched->score = score ? score : &sched->_score;
+	sched->dev = dev;
 	for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_COUNT; i++)
 		drm_sched_rq_init(sched, &sched->sched_rq[i]);
 
@@ -1018,7 +1019,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched,
 	if (IS_ERR(sched->thread)) {
 		ret = PTR_ERR(sched->thread);
 		sched->thread = NULL;
-		DRM_ERROR("Failed to create scheduler for %s.\n", name);
+		DRM_DEV_ERROR(sched->dev, "Failed to create scheduler for %s.\n", name);
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile
index 0856e4b12f70..5ba5f9138c95 100644
--- a/drivers/gpu/drm/selftests/Makefile
+++ b/drivers/gpu/drm/selftests/Makefile
@@ -4,4 +4,5 @@ test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \
 		      test-drm_damage_helper.o test-drm_dp_mst_helper.o \
 		      test-drm_rect.o
 
-obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o
+obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o \
+				    test-drm_buddy.o
diff --git a/drivers/gpu/drm/selftests/drm_buddy_selftests.h b/drivers/gpu/drm/selftests/drm_buddy_selftests.h
new file mode 100644
index 000000000000..455b756c4ae5
--- /dev/null
+++ b/drivers/gpu/drm/selftests/drm_buddy_selftests.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as igt__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * Tests are executed in order by igt/drm_buddy
+ */
+selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */
+selftest(buddy_alloc_limit, igt_buddy_alloc_limit)
+selftest(buddy_alloc_range, igt_buddy_alloc_range)
+selftest(buddy_alloc_optimistic, igt_buddy_alloc_optimistic)
+selftest(buddy_alloc_pessimistic, igt_buddy_alloc_pessimistic)
+selftest(buddy_alloc_smoke, igt_buddy_alloc_smoke)
+selftest(buddy_alloc_pathological, igt_buddy_alloc_pathological)
diff --git a/drivers/gpu/drm/selftests/test-drm_buddy.c b/drivers/gpu/drm/selftests/test-drm_buddy.c
new file mode 100644
index 000000000000..fa997f89522b
--- /dev/null
+++ b/drivers/gpu/drm/selftests/test-drm_buddy.c
@@ -0,0 +1,992 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#define pr_fmt(fmt) "drm_buddy: " fmt
+
+#include <linux/module.h>
+#include <linux/prime_numbers.h>
+#include <linux/sched/signal.h>
+
+#include <drm/drm_buddy.h>
+
+#include "../lib/drm_random.h"
+
+#define TESTS "drm_buddy_selftests.h"
+#include "drm_selftest.h"
+
+#define IGT_TIMEOUT(name__) \
+	unsigned long name__ = jiffies + MAX_SCHEDULE_TIMEOUT
+
+static unsigned int random_seed;
+
+static inline u64 get_size(int order, u64 chunk_size)
+{
+	return (1 << order) * chunk_size;
+}
+
+__printf(2, 3)
+static bool __igt_timeout(unsigned long timeout, const char *fmt, ...)
+{
+	va_list va;
+
+	if (!signal_pending(current)) {
+		cond_resched();
+		if (time_before(jiffies, timeout))
+			return false;
+	}
+
+	if (fmt) {
+		va_start(va, fmt);
+		vprintk(fmt, va);
+		va_end(va);
+	}
+
+	return true;
+}
+
+static inline const char *yesno(bool v)
+{
+	return v ? "yes" : "no";
+}
+
+static void __igt_dump_block(struct drm_buddy *mm,
+			     struct drm_buddy_block *block,
+			     bool buddy)
+{
+	pr_err("block info: header=%llx, state=%u, order=%d, offset=%llx size=%llx root=%s buddy=%s\n",
+	       block->header,
+	       drm_buddy_block_state(block),
+	       drm_buddy_block_order(block),
+	       drm_buddy_block_offset(block),
+	       drm_buddy_block_size(mm, block),
+	       yesno(!block->parent),
+	       yesno(buddy));
+}
+
+static void igt_dump_block(struct drm_buddy *mm,
+			   struct drm_buddy_block *block)
+{
+	struct drm_buddy_block *buddy;
+
+	__igt_dump_block(mm, block, false);
+
+	buddy = drm_get_buddy(block);
+	if (buddy)
+		__igt_dump_block(mm, buddy, true);
+}
+
+static int igt_check_block(struct drm_buddy *mm,
+			   struct drm_buddy_block *block)
+{
+	struct drm_buddy_block *buddy;
+	unsigned int block_state;
+	u64 block_size;
+	u64 offset;
+	int err = 0;
+
+	block_state = drm_buddy_block_state(block);
+
+	if (block_state != DRM_BUDDY_ALLOCATED &&
+	    block_state != DRM_BUDDY_FREE &&
+	    block_state != DRM_BUDDY_SPLIT) {
+		pr_err("block state mismatch\n");
+		err = -EINVAL;
+	}
+
+	block_size = drm_buddy_block_size(mm, block);
+	offset = drm_buddy_block_offset(block);
+
+	if (block_size < mm->chunk_size) {
+		pr_err("block size smaller than min size\n");
+		err = -EINVAL;
+	}
+
+	if (!is_power_of_2(block_size)) {
+		pr_err("block size not power of two\n");
+		err = -EINVAL;
+	}
+
+	if (!IS_ALIGNED(block_size, mm->chunk_size)) {
+		pr_err("block size not aligned to min size\n");
+		err = -EINVAL;
+	}
+
+	if (!IS_ALIGNED(offset, mm->chunk_size)) {
+		pr_err("block offset not aligned to min size\n");
+		err = -EINVAL;
+	}
+
+	if (!IS_ALIGNED(offset, block_size)) {
+		pr_err("block offset not aligned to block size\n");
+		err = -EINVAL;
+	}
+
+	buddy = drm_get_buddy(block);
+
+	if (!buddy && block->parent) {
+		pr_err("buddy has gone fishing\n");
+		err = -EINVAL;
+	}
+
+	if (buddy) {
+		if (drm_buddy_block_offset(buddy) != (offset ^ block_size)) {
+			pr_err("buddy has wrong offset\n");
+			err = -EINVAL;
+		}
+
+		if (drm_buddy_block_size(mm, buddy) != block_size) {
+			pr_err("buddy size mismatch\n");
+			err = -EINVAL;
+		}
+
+		if (drm_buddy_block_state(buddy) == block_state &&
+		    block_state == DRM_BUDDY_FREE) {
+			pr_err("block and its buddy are free\n");
+			err = -EINVAL;
+		}
+	}
+
+	return err;
+}
+
+static int igt_check_blocks(struct drm_buddy *mm,
+			    struct list_head *blocks,
+			    u64 expected_size,
+			    bool is_contiguous)
+{
+	struct drm_buddy_block *block;
+	struct drm_buddy_block *prev;
+	u64 total;
+	int err = 0;
+
+	block = NULL;
+	prev = NULL;
+	total = 0;
+
+	list_for_each_entry(block, blocks, link) {
+		err = igt_check_block(mm, block);
+
+		if (!drm_buddy_block_is_allocated(block)) {
+			pr_err("block not allocated\n"),
+			       err = -EINVAL;
+		}
+
+		if (is_contiguous && prev) {
+			u64 prev_block_size;
+			u64 prev_offset;
+			u64 offset;
+
+			prev_offset = drm_buddy_block_offset(prev);
+			prev_block_size = drm_buddy_block_size(mm, prev);
+			offset = drm_buddy_block_offset(block);
+
+			if (offset != (prev_offset + prev_block_size)) {
+				pr_err("block offset mismatch\n");
+				err = -EINVAL;
+			}
+		}
+
+		if (err)
+			break;
+
+		total += drm_buddy_block_size(mm, block);
+		prev = block;
+	}
+
+	if (!err) {
+		if (total != expected_size) {
+			pr_err("size mismatch, expected=%llx, found=%llx\n",
+			       expected_size, total);
+			err = -EINVAL;
+		}
+		return err;
+	}
+
+	if (prev) {
+		pr_err("prev block, dump:\n");
+		igt_dump_block(mm, prev);
+	}
+
+	pr_err("bad block, dump:\n");
+	igt_dump_block(mm, block);
+
+	return err;
+}
+
+static int igt_check_mm(struct drm_buddy *mm)
+{
+	struct drm_buddy_block *root;
+	struct drm_buddy_block *prev;
+	unsigned int i;
+	u64 total;
+	int err = 0;
+
+	if (!mm->n_roots) {
+		pr_err("n_roots is zero\n");
+		return -EINVAL;
+	}
+
+	if (mm->n_roots != hweight64(mm->size)) {
+		pr_err("n_roots mismatch, n_roots=%u, expected=%lu\n",
+		       mm->n_roots, hweight64(mm->size));
+		return -EINVAL;
+	}
+
+	root = NULL;
+	prev = NULL;
+	total = 0;
+
+	for (i = 0; i < mm->n_roots; ++i) {
+		struct drm_buddy_block *block;
+		unsigned int order;
+
+		root = mm->roots[i];
+		if (!root) {
+			pr_err("root(%u) is NULL\n", i);
+			err = -EINVAL;
+			break;
+		}
+
+		err = igt_check_block(mm, root);
+
+		if (!drm_buddy_block_is_free(root)) {
+			pr_err("root not free\n");
+			err = -EINVAL;
+		}
+
+		order = drm_buddy_block_order(root);
+
+		if (!i) {
+			if (order != mm->max_order) {
+				pr_err("max order root missing\n");
+				err = -EINVAL;
+			}
+		}
+
+		if (prev) {
+			u64 prev_block_size;
+			u64 prev_offset;
+			u64 offset;
+
+			prev_offset = drm_buddy_block_offset(prev);
+			prev_block_size = drm_buddy_block_size(mm, prev);
+			offset = drm_buddy_block_offset(root);
+
+			if (offset != (prev_offset + prev_block_size)) {
+				pr_err("root offset mismatch\n");
+				err = -EINVAL;
+			}
+		}
+
+		block = list_first_entry_or_null(&mm->free_list[order],
+						 struct drm_buddy_block,
+						 link);
+		if (block != root) {
+			pr_err("root mismatch at order=%u\n", order);
+			err = -EINVAL;
+		}
+
+		if (err)
+			break;
+
+		prev = root;
+		total += drm_buddy_block_size(mm, root);
+	}
+
+	if (!err) {
+		if (total != mm->size) {
+			pr_err("expected mm size=%llx, found=%llx\n", mm->size,
+			       total);
+			err = -EINVAL;
+		}
+		return err;
+	}
+
+	if (prev) {
+		pr_err("prev root(%u), dump:\n", i - 1);
+		igt_dump_block(mm, prev);
+	}
+
+	if (root) {
+		pr_err("bad root(%u), dump:\n", i);
+		igt_dump_block(mm, root);
+	}
+
+	return err;
+}
+
+static void igt_mm_config(u64 *size, u64 *chunk_size)
+{
+	DRM_RND_STATE(prng, random_seed);
+	u32 s, ms;
+
+	/* Nothing fancy, just try to get an interesting bit pattern */
+
+	prandom_seed_state(&prng, random_seed);
+
+	/* Let size be a random number of pages up to 8 GB (2M pages) */
+	s = 1 + drm_prandom_u32_max_state((BIT(33 - 12)) - 1, &prng);
+	/* Let the chunk size be a random power of 2 less than size */
+	ms = BIT(drm_prandom_u32_max_state(ilog2(s), &prng));
+	/* Round size down to the chunk size */
+	s &= -ms;
+
+	/* Convert from pages to bytes */
+	*chunk_size = (u64)ms << 12;
+	*size = (u64)s << 12;
+}
+
+static int igt_buddy_alloc_pathological(void *arg)
+{
+	u64 mm_size, size, min_page_size, start = 0;
+	struct drm_buddy_block *block;
+	const int max_order = 3;
+	unsigned long flags = 0;
+	int order, top, err;
+	struct drm_buddy mm;
+	LIST_HEAD(blocks);
+	LIST_HEAD(holes);
+	LIST_HEAD(tmp);
+
+	/*
+	 * Create a pot-sized mm, then allocate one of each possible
+	 * order within. This should leave the mm with exactly one
+	 * page left. Free the largest block, then whittle down again.
+	 * Eventually we will have a fully 50% fragmented mm.
+	 */
+
+	mm_size = PAGE_SIZE << max_order;
+	err = drm_buddy_init(&mm, mm_size, PAGE_SIZE);
+	if (err) {
+		pr_err("buddy_init failed(%d)\n", err);
+		return err;
+	}
+	BUG_ON(mm.max_order != max_order);
+
+	for (top = max_order; top; top--) {
+		/* Make room by freeing the largest allocated block */
+		block = list_first_entry_or_null(&blocks, typeof(*block), link);
+		if (block) {
+			list_del(&block->link);
+			drm_buddy_free_block(&mm, block);
+		}
+
+		for (order = top; order--; ) {
+			size = min_page_size = get_size(order, PAGE_SIZE);
+			err = drm_buddy_alloc_blocks(&mm, start, mm_size, size,
+						     min_page_size, &tmp, flags);
+			if (err) {
+				pr_info("buddy_alloc hit -ENOMEM with order=%d, top=%d\n",
+					order, top);
+				goto err;
+			}
+
+			block = list_first_entry_or_null(&tmp,
+							 struct drm_buddy_block,
+							 link);
+			if (!block) {
+				pr_err("alloc_blocks has no blocks\n");
+				err = -EINVAL;
+				goto err;
+			}
+
+			list_move_tail(&block->link, &blocks);
+		}
+
+		/* There should be one final page for this sub-allocation */
+		size = min_page_size = get_size(0, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (err) {
+			pr_info("buddy_alloc hit -ENOMEM for hole\n");
+			goto err;
+		}
+
+		block = list_first_entry_or_null(&tmp,
+						 struct drm_buddy_block,
+						 link);
+		if (!block) {
+			pr_err("alloc_blocks has no blocks\n");
+			err = -EINVAL;
+			goto err;
+		}
+
+		list_move_tail(&block->link, &holes);
+
+		size = min_page_size = get_size(top, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (!err) {
+			pr_info("buddy_alloc unexpectedly succeeded at top-order %d/%d, it should be full!",
+				top, max_order);
+			block = list_first_entry_or_null(&tmp,
+							 struct drm_buddy_block,
+							 link);
+			if (!block) {
+				pr_err("alloc_blocks has no blocks\n");
+				err = -EINVAL;
+				goto err;
+			}
+
+			list_move_tail(&block->link, &blocks);
+			err = -EINVAL;
+			goto err;
+		}
+	}
+
+	drm_buddy_free_list(&mm, &holes);
+
+	/* Nothing larger than blocks of chunk_size now available */
+	for (order = 1; order <= max_order; order++) {
+		size = min_page_size = get_size(order, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (!err) {
+			pr_info("buddy_alloc unexpectedly succeeded at order %d, it should be full!",
+				order);
+			block = list_first_entry_or_null(&tmp,
+							 struct drm_buddy_block,
+							 link);
+			if (!block) {
+				pr_err("alloc_blocks has no blocks\n");
+				err = -EINVAL;
+				goto err;
+			}
+
+			list_move_tail(&block->link, &blocks);
+			err = -EINVAL;
+			goto err;
+		}
+	}
+
+	if (err)
+		err = 0;
+
+err:
+	list_splice_tail(&holes, &blocks);
+	drm_buddy_free_list(&mm, &blocks);
+	drm_buddy_fini(&mm);
+	return err;
+}
+
+static int igt_buddy_alloc_smoke(void *arg)
+{
+	u64 mm_size, min_page_size, chunk_size, start = 0;
+	unsigned long flags = 0;
+	struct drm_buddy mm;
+	int *order;
+	int err, i;
+
+	DRM_RND_STATE(prng, random_seed);
+	IGT_TIMEOUT(end_time);
+
+	igt_mm_config(&mm_size, &chunk_size);
+
+	err = drm_buddy_init(&mm, mm_size, chunk_size);
+	if (err) {
+		pr_err("buddy_init failed(%d)\n", err);
+		return err;
+	}
+
+	order = drm_random_order(mm.max_order + 1, &prng);
+	if (!order)
+		goto out_fini;
+
+	for (i = 0; i <= mm.max_order; ++i) {
+		struct drm_buddy_block *block;
+		int max_order = order[i];
+		bool timeout = false;
+		LIST_HEAD(blocks);
+		u64 total, size;
+		LIST_HEAD(tmp);
+		int order;
+
+		err = igt_check_mm(&mm);
+		if (err) {
+			pr_err("pre-mm check failed, abort\n");
+			break;
+		}
+
+		order = max_order;
+		total = 0;
+
+		do {
+retry:
+			size = min_page_size = get_size(order, chunk_size);
+			err = drm_buddy_alloc_blocks(&mm, start, mm_size, size,
+						     min_page_size, &tmp, flags);
+			if (err) {
+				if (err == -ENOMEM) {
+					pr_info("buddy_alloc hit -ENOMEM with order=%d\n",
+						order);
+				} else {
+					if (order--) {
+						err = 0;
+						goto retry;
+					}
+
+					pr_err("buddy_alloc with order=%d failed(%d)\n",
+					       order, err);
+				}
+
+				break;
+			}
+
+			block = list_first_entry_or_null(&tmp,
+							 struct drm_buddy_block,
+							 link);
+			if (!block) {
+				pr_err("alloc_blocks has no blocks\n");
+				err = -EINVAL;
+				break;
+			}
+
+			list_move_tail(&block->link, &blocks);
+
+			if (drm_buddy_block_order(block) != order) {
+				pr_err("buddy_alloc order mismatch\n");
+				err = -EINVAL;
+				break;
+			}
+
+			total += drm_buddy_block_size(&mm, block);
+
+			if (__igt_timeout(end_time, NULL)) {
+				timeout = true;
+				break;
+			}
+		} while (total < mm.size);
+
+		if (!err)
+			err = igt_check_blocks(&mm, &blocks, total, false);
+
+		drm_buddy_free_list(&mm, &blocks);
+
+		if (!err) {
+			err = igt_check_mm(&mm);
+			if (err)
+				pr_err("post-mm check failed\n");
+		}
+
+		if (err || timeout)
+			break;
+
+		cond_resched();
+	}
+
+	if (err == -ENOMEM)
+		err = 0;
+
+	kfree(order);
+out_fini:
+	drm_buddy_fini(&mm);
+
+	return err;
+}
+
+static int igt_buddy_alloc_pessimistic(void *arg)
+{
+	u64 mm_size, size, min_page_size, start = 0;
+	struct drm_buddy_block *block, *bn;
+	const unsigned int max_order = 16;
+	unsigned long flags = 0;
+	struct drm_buddy mm;
+	unsigned int order;
+	LIST_HEAD(blocks);
+	LIST_HEAD(tmp);
+	int err;
+
+	/*
+	 * Create a pot-sized mm, then allocate one of each possible
+	 * order within. This should leave the mm with exactly one
+	 * page left.
+	 */
+
+	mm_size = PAGE_SIZE << max_order;
+	err = drm_buddy_init(&mm, mm_size, PAGE_SIZE);
+	if (err) {
+		pr_err("buddy_init failed(%d)\n", err);
+		return err;
+	}
+	BUG_ON(mm.max_order != max_order);
+
+	for (order = 0; order < max_order; order++) {
+		size = min_page_size = get_size(order, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (err) {
+			pr_info("buddy_alloc hit -ENOMEM with order=%d\n",
+				order);
+			goto err;
+		}
+
+		block = list_first_entry_or_null(&tmp,
+						 struct drm_buddy_block,
+						 link);
+		if (!block) {
+			pr_err("alloc_blocks has no blocks\n");
+			err = -EINVAL;
+			goto err;
+		}
+
+		list_move_tail(&block->link, &blocks);
+	}
+
+	/* And now the last remaining block available */
+	size = min_page_size = get_size(0, PAGE_SIZE);
+	err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+	if (err) {
+		pr_info("buddy_alloc hit -ENOMEM on final alloc\n");
+		goto err;
+	}
+
+	block = list_first_entry_or_null(&tmp,
+					 struct drm_buddy_block,
+					 link);
+	if (!block) {
+		pr_err("alloc_blocks has no blocks\n");
+		err = -EINVAL;
+		goto err;
+	}
+
+	list_move_tail(&block->link, &blocks);
+
+	/* Should be completely full! */
+	for (order = max_order; order--; ) {
+		size = min_page_size = get_size(order, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (!err) {
+			pr_info("buddy_alloc unexpectedly succeeded at order %d, it should be full!",
+				order);
+			block = list_first_entry_or_null(&tmp,
+							 struct drm_buddy_block,
+							 link);
+			if (!block) {
+				pr_err("alloc_blocks has no blocks\n");
+				err = -EINVAL;
+				goto err;
+			}
+
+			list_move_tail(&block->link, &blocks);
+			err = -EINVAL;
+			goto err;
+		}
+	}
+
+	block = list_last_entry(&blocks, typeof(*block), link);
+	list_del(&block->link);
+	drm_buddy_free_block(&mm, block);
+
+	/* As we free in increasing size, we make available larger blocks */
+	order = 1;
+	list_for_each_entry_safe(block, bn, &blocks, link) {
+		list_del(&block->link);
+		drm_buddy_free_block(&mm, block);
+
+		size = min_page_size = get_size(order, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (err) {
+			pr_info("buddy_alloc (realloc) hit -ENOMEM with order=%d\n",
+				order);
+			goto err;
+		}
+
+		block = list_first_entry_or_null(&tmp,
+						 struct drm_buddy_block,
+						 link);
+		if (!block) {
+			pr_err("alloc_blocks has no blocks\n");
+			err = -EINVAL;
+			goto err;
+		}
+
+		list_del(&block->link);
+		drm_buddy_free_block(&mm, block);
+		order++;
+	}
+
+	/* To confirm, now the whole mm should be available */
+	size = min_page_size = get_size(max_order, PAGE_SIZE);
+	err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+	if (err) {
+		pr_info("buddy_alloc (realloc) hit -ENOMEM with order=%d\n",
+			max_order);
+		goto err;
+	}
+
+	block = list_first_entry_or_null(&tmp,
+					 struct drm_buddy_block,
+					 link);
+	if (!block) {
+		pr_err("alloc_blocks has no blocks\n");
+		err = -EINVAL;
+		goto err;
+	}
+
+	list_del(&block->link);
+	drm_buddy_free_block(&mm, block);
+
+err:
+	drm_buddy_free_list(&mm, &blocks);
+	drm_buddy_fini(&mm);
+	return err;
+}
+
+static int igt_buddy_alloc_optimistic(void *arg)
+{
+	u64 mm_size, size, min_page_size, start = 0;
+	struct drm_buddy_block *block;
+	unsigned long flags = 0;
+	const int max_order = 16;
+	struct drm_buddy mm;
+	LIST_HEAD(blocks);
+	LIST_HEAD(tmp);
+	int order, err;
+
+	/*
+	 * Create a mm with one block of each order available, and
+	 * try to allocate them all.
+	 */
+
+	mm_size = PAGE_SIZE * ((1 << (max_order + 1)) - 1);
+	err = drm_buddy_init(&mm,
+			     mm_size,
+			     PAGE_SIZE);
+	if (err) {
+		pr_err("buddy_init failed(%d)\n", err);
+		return err;
+	}
+
+	BUG_ON(mm.max_order != max_order);
+
+	for (order = 0; order <= max_order; order++) {
+		size = min_page_size = get_size(order, PAGE_SIZE);
+		err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+		if (err) {
+			pr_info("buddy_alloc hit -ENOMEM with order=%d\n",
+				order);
+			goto err;
+		}
+
+		block = list_first_entry_or_null(&tmp,
+						 struct drm_buddy_block,
+						 link);
+		if (!block) {
+			pr_err("alloc_blocks has no blocks\n");
+			err = -EINVAL;
+			goto err;
+		}
+
+		list_move_tail(&block->link, &blocks);
+	}
+
+	/* Should be completely full! */
+	size = min_page_size = get_size(0, PAGE_SIZE);
+	err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, min_page_size, &tmp, flags);
+	if (!err) {
+		pr_info("buddy_alloc unexpectedly succeeded, it should be full!");
+		block = list_first_entry_or_null(&tmp,
+						 struct drm_buddy_block,
+						 link);
+		if (!block) {
+			pr_err("alloc_blocks has no blocks\n");
+			err = -EINVAL;
+			goto err;
+		}
+
+		list_move_tail(&block->link, &blocks);
+		err = -EINVAL;
+		goto err;
+	} else {
+		err = 0;
+	}
+
+err:
+	drm_buddy_free_list(&mm, &blocks);
+	drm_buddy_fini(&mm);
+	return err;
+}
+
+static int igt_buddy_alloc_range(void *arg)
+{
+	unsigned long flags = DRM_BUDDY_RANGE_ALLOCATION;
+	u64 offset, size, rem, chunk_size, end;
+	unsigned long page_num;
+	struct drm_buddy mm;
+	LIST_HEAD(blocks);
+	int err;
+
+	igt_mm_config(&size, &chunk_size);
+
+	err = drm_buddy_init(&mm, size, chunk_size);
+	if (err) {
+		pr_err("buddy_init failed(%d)\n", err);
+		return err;
+	}
+
+	err = igt_check_mm(&mm);
+	if (err) {
+		pr_err("pre-mm check failed, abort, abort, abort!\n");
+		goto err_fini;
+	}
+
+	rem = mm.size;
+	offset = 0;
+
+	for_each_prime_number_from(page_num, 1, ULONG_MAX - 1) {
+		struct drm_buddy_block *block;
+		LIST_HEAD(tmp);
+
+		size = min(page_num * mm.chunk_size, rem);
+		end = offset + size;
+
+		err = drm_buddy_alloc_blocks(&mm, offset, end, size, mm.chunk_size, &tmp, flags);
+		if (err) {
+			if (err == -ENOMEM) {
+				pr_info("alloc_range hit -ENOMEM with size=%llx\n",
+					size);
+			} else {
+				pr_err("alloc_range with offset=%llx, size=%llx failed(%d)\n",
+				       offset, size, err);
+			}
+
+			break;
+		}
+
+		block = list_first_entry_or_null(&tmp,
+						 struct drm_buddy_block,
+						 link);
+		if (!block) {
+			pr_err("alloc_range has no blocks\n");
+			err = -EINVAL;
+			break;
+		}
+
+		if (drm_buddy_block_offset(block) != offset) {
+			pr_err("alloc_range start offset mismatch, found=%llx, expected=%llx\n",
+			       drm_buddy_block_offset(block), offset);
+			err = -EINVAL;
+		}
+
+		if (!err)
+			err = igt_check_blocks(&mm, &tmp, size, true);
+
+		list_splice_tail(&tmp, &blocks);
+
+		if (err)
+			break;
+
+		offset += size;
+
+		rem -= size;
+		if (!rem)
+			break;
+
+		cond_resched();
+	}
+
+	if (err == -ENOMEM)
+		err = 0;
+
+	drm_buddy_free_list(&mm, &blocks);
+
+	if (!err) {
+		err = igt_check_mm(&mm);
+		if (err)
+			pr_err("post-mm check failed\n");
+	}
+
+err_fini:
+	drm_buddy_fini(&mm);
+
+	return err;
+}
+
+static int igt_buddy_alloc_limit(void *arg)
+{
+	u64 end, size = U64_MAX, start = 0;
+	struct drm_buddy_block *block;
+	unsigned long flags = 0;
+	LIST_HEAD(allocated);
+	struct drm_buddy mm;
+	int err;
+
+	size = end = round_down(size, 4096);
+	err = drm_buddy_init(&mm, size, PAGE_SIZE);
+	if (err)
+		return err;
+
+	if (mm.max_order != DRM_BUDDY_MAX_ORDER) {
+		pr_err("mm.max_order(%d) != %d\n",
+		       mm.max_order, DRM_BUDDY_MAX_ORDER);
+		err = -EINVAL;
+		goto out_fini;
+	}
+
+	err = drm_buddy_alloc_blocks(&mm, start, end, size,
+				     PAGE_SIZE, &allocated, flags);
+
+	if (unlikely(err))
+		goto out_free;
+
+	block = list_first_entry_or_null(&allocated,
+					 struct drm_buddy_block,
+					 link);
+
+	if (!block) {
+		err = -EINVAL;
+		goto out_fini;
+	}
+
+	if (drm_buddy_block_order(block) != mm.max_order) {
+		pr_err("block order(%d) != %d\n",
+		       drm_buddy_block_order(block), mm.max_order);
+		err = -EINVAL;
+		goto out_free;
+	}
+
+	if (drm_buddy_block_size(&mm, block) !=
+	    BIT_ULL(mm.max_order) * PAGE_SIZE) {
+		pr_err("block size(%llu) != %llu\n",
+		       drm_buddy_block_size(&mm, block),
+		       BIT_ULL(mm.max_order) * PAGE_SIZE);
+		err = -EINVAL;
+		goto out_free;
+	}
+
+out_free:
+	drm_buddy_free_list(&mm, &allocated);
+out_fini:
+	drm_buddy_fini(&mm);
+	return err;
+}
+
+static int igt_sanitycheck(void *ignored)
+{
+	pr_info("%s - ok!\n", __func__);
+	return 0;
+}
+
+#include "drm_selftest.c"
+
+static int __init test_drm_buddy_init(void)
+{
+	int err;
+
+	while (!random_seed)
+		random_seed = get_random_int();
+
+	pr_info("Testing DRM buddy manager (struct drm_buddy), with random_seed=0x%x\n",
+		random_seed);
+	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
+
+	return err > 0 ? 0 : err;
+}
+
+static void __exit test_drm_buddy_exit(void)
+{
+}
+
+module_init(test_drm_buddy_init);
+module_exit(test_drm_buddy_exit);
+
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/selftests/test-drm_framebuffer.c b/drivers/gpu/drm/selftests/test-drm_framebuffer.c
index 61b44d3a6a61..f6d66285c5fc 100644
--- a/drivers/gpu/drm/selftests/test-drm_framebuffer.c
+++ b/drivers/gpu/drm/selftests/test-drm_framebuffer.c
@@ -323,7 +323,6 @@ static struct drm_device mock_drm_device = {
 		.max_width = MAX_WIDTH,
 		.min_height = MIN_HEIGHT,
 		.max_height = MAX_HEIGHT,
-		.allow_fb_modifiers = true,
 		.funcs = &mock_config_funcs,
 	},
 };
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
index 80078a9fd7f6..731cbad7520f 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -18,6 +18,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -295,7 +296,7 @@ static struct platform_driver shmob_drm_platform_driver = {
 	},
 };
 
-module_platform_driver(shmob_drm_platform_driver);
+drm_module_platform_driver(shmob_drm_platform_driver);
 
 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 MODULE_DESCRIPTION("Renesas SH Mobile DRM Driver");
diff --git a/drivers/gpu/drm/solomon/Kconfig b/drivers/gpu/drm/solomon/Kconfig
new file mode 100644
index 000000000000..5861c3ab7c45
--- /dev/null
+++ b/drivers/gpu/drm/solomon/Kconfig
@@ -0,0 +1,21 @@
+config DRM_SSD130X
+	tristate "DRM support for Solomon SSD130x OLED displays"
+	depends on DRM
+	select BACKLIGHT_CLASS_DEVICE
+	select DRM_GEM_SHMEM_HELPER
+	select DRM_KMS_HELPER
+	help
+	  DRM driver for the SSD1305, SSD1306, SSD1307 and SSD1309 Solomon
+	  OLED controllers. This is only for the core driver, a driver for
+	  the appropriate bus transport in your chip also must be selected.
+
+	  If M is selected the module will be called ssd130x.
+
+config DRM_SSD130X_I2C
+	tristate "DRM support for Solomon SSD130x OLED displays (I2C bus)"
+	depends on DRM_SSD130X && I2C
+	select REGMAP_I2C
+	help
+	  Say Y here if the SSD130x OLED display is connected via I2C bus.
+
+	  If M is selected the module will be called ssd130x-i2c.
diff --git a/drivers/gpu/drm/solomon/Makefile b/drivers/gpu/drm/solomon/Makefile
new file mode 100644
index 000000000000..4bfc5acb0447
--- /dev/null
+++ b/drivers/gpu/drm/solomon/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_DRM_SSD130X)	+= ssd130x.o
+obj-$(CONFIG_DRM_SSD130X_I2C)	+= ssd130x-i2c.o
diff --git a/drivers/gpu/drm/solomon/ssd130x-i2c.c b/drivers/gpu/drm/solomon/ssd130x-i2c.c
new file mode 100644
index 000000000000..3126aeda4ced
--- /dev/null
+++ b/drivers/gpu/drm/solomon/ssd130x-i2c.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * DRM driver for Solomon SSD130x OLED displays (I2C bus)
+ *
+ * Copyright 2022 Red Hat Inc.
+ * Author: Javier Martinez Canillas <javierm@redhat.com>
+ *
+ * Based on drivers/video/fbdev/ssd1307fb.c
+ * Copyright 2012 Free Electrons
+ */
+#include <linux/i2c.h>
+#include <linux/module.h>
+
+#include "ssd130x.h"
+
+#define DRIVER_NAME	"ssd130x-i2c"
+#define DRIVER_DESC	"DRM driver for Solomon SSD130x OLED displays (I2C)"
+
+static const struct regmap_config ssd130x_i2c_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static int ssd130x_i2c_probe(struct i2c_client *client)
+{
+	struct ssd130x_device *ssd130x;
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i2c(client, &ssd130x_i2c_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	ssd130x = ssd130x_probe(&client->dev, regmap);
+	if (IS_ERR(ssd130x))
+		return PTR_ERR(ssd130x);
+
+	i2c_set_clientdata(client, ssd130x);
+
+	return 0;
+}
+
+static int ssd130x_i2c_remove(struct i2c_client *client)
+{
+	struct ssd130x_device *ssd130x = i2c_get_clientdata(client);
+
+	return ssd130x_remove(ssd130x);
+}
+
+static void ssd130x_i2c_shutdown(struct i2c_client *client)
+{
+	struct ssd130x_device *ssd130x = i2c_get_clientdata(client);
+
+	ssd130x_shutdown(ssd130x);
+}
+
+static struct ssd130x_deviceinfo ssd130x_ssd1305_deviceinfo = {
+	.default_vcomh = 0x34,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 7,
+};
+
+static struct ssd130x_deviceinfo ssd130x_ssd1306_deviceinfo = {
+	.default_vcomh = 0x20,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 8,
+	.need_chargepump = 1,
+};
+
+static struct ssd130x_deviceinfo ssd130x_ssd1307_deviceinfo = {
+	.default_vcomh = 0x20,
+	.default_dclk_div = 2,
+	.default_dclk_frq = 12,
+	.need_pwm = 1,
+};
+
+static struct ssd130x_deviceinfo ssd130x_ssd1309_deviceinfo = {
+	.default_vcomh = 0x34,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 10,
+};
+
+static const struct of_device_id ssd130x_of_match[] = {
+	{
+		.compatible = "solomon,ssd1305fb-i2c",
+		.data = &ssd130x_ssd1305_deviceinfo,
+	},
+	{
+		.compatible = "solomon,ssd1306fb-i2c",
+		.data = &ssd130x_ssd1306_deviceinfo,
+	},
+	{
+		.compatible = "solomon,ssd1307fb-i2c",
+		.data = &ssd130x_ssd1307_deviceinfo,
+	},
+	{
+		.compatible = "solomon,ssd1309fb-i2c",
+		.data = &ssd130x_ssd1309_deviceinfo,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ssd130x_of_match);
+
+static struct i2c_driver ssd130x_i2c_driver = {
+	.driver = {
+		.name = DRIVER_NAME,
+		.of_match_table = ssd130x_of_match,
+	},
+	.probe_new = ssd130x_i2c_probe,
+	.remove = ssd130x_i2c_remove,
+	.shutdown = ssd130x_i2c_shutdown,
+};
+module_i2c_driver(ssd130x_i2c_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c
new file mode 100644
index 000000000000..92c1902f53e4
--- /dev/null
+++ b/drivers/gpu/drm/solomon/ssd130x.c
@@ -0,0 +1,843 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * DRM driver for Solomon SSD130x OLED displays
+ *
+ * Copyright 2022 Red Hat Inc.
+ * Author: Javier Martinez Canillas <javierm@redhat.com>
+ *
+ * Based on drivers/video/fbdev/ssd1307fb.c
+ * Copyright 2012 Free Electrons
+ */
+
+#include <linux/backlight.h>
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/property.h>
+#include <linux/pwm.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_damage_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_format_helper.h>
+#include <drm/drm_gem_atomic_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_managed.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_probe_helper.h>
+
+#include "ssd130x.h"
+
+#define DRIVER_NAME	"ssd130x"
+#define DRIVER_DESC	"DRM driver for Solomon SSD130x OLED displays"
+#define DRIVER_DATE	"20220131"
+#define DRIVER_MAJOR	1
+#define DRIVER_MINOR	0
+
+#define SSD130X_DATA				0x40
+#define SSD130X_COMMAND				0x80
+
+#define SSD130X_SET_ADDRESS_MODE		0x20
+#define SSD130X_SET_COL_RANGE			0x21
+#define SSD130X_SET_PAGE_RANGE			0x22
+#define SSD130X_CONTRAST			0x81
+#define SSD130X_SET_LOOKUP_TABLE		0x91
+#define SSD130X_CHARGE_PUMP			0x8d
+#define SSD130X_SEG_REMAP_ON			0xa1
+#define SSD130X_DISPLAY_OFF			0xae
+#define SSD130X_SET_MULTIPLEX_RATIO		0xa8
+#define SSD130X_DISPLAY_ON			0xaf
+#define SSD130X_START_PAGE_ADDRESS		0xb0
+#define SSD130X_SET_COM_SCAN_DIR		0xc0
+#define SSD130X_SET_DISPLAY_OFFSET		0xd3
+#define SSD130X_SET_CLOCK_FREQ			0xd5
+#define SSD130X_SET_AREA_COLOR_MODE		0xd8
+#define SSD130X_SET_PRECHARGE_PERIOD		0xd9
+#define SSD130X_SET_COM_PINS_CONFIG		0xda
+#define SSD130X_SET_VCOMH			0xdb
+
+#define SSD130X_SET_COM_SCAN_DIR_MASK		GENMASK(3, 2)
+#define SSD130X_SET_COM_SCAN_DIR_SET(val)	FIELD_PREP(SSD130X_SET_COM_SCAN_DIR_MASK, (val))
+#define SSD130X_SET_CLOCK_DIV_MASK		GENMASK(3, 0)
+#define SSD130X_SET_CLOCK_DIV_SET(val)		FIELD_PREP(SSD130X_SET_CLOCK_DIV_MASK, (val))
+#define SSD130X_SET_CLOCK_FREQ_MASK		GENMASK(7, 4)
+#define SSD130X_SET_CLOCK_FREQ_SET(val)		FIELD_PREP(SSD130X_SET_CLOCK_FREQ_MASK, (val))
+#define SSD130X_SET_PRECHARGE_PERIOD1_MASK	GENMASK(3, 0)
+#define SSD130X_SET_PRECHARGE_PERIOD1_SET(val)	FIELD_PREP(SSD130X_SET_PRECHARGE_PERIOD1_MASK, (val))
+#define SSD130X_SET_PRECHARGE_PERIOD2_MASK	GENMASK(7, 4)
+#define SSD130X_SET_PRECHARGE_PERIOD2_SET(val)	FIELD_PREP(SSD130X_SET_PRECHARGE_PERIOD2_MASK, (val))
+#define SSD130X_SET_COM_PINS_CONFIG1_MASK	GENMASK(4, 4)
+#define SSD130X_SET_COM_PINS_CONFIG1_SET(val)	FIELD_PREP(SSD130X_SET_COM_PINS_CONFIG1_MASK, !(val))
+#define SSD130X_SET_COM_PINS_CONFIG2_MASK	GENMASK(5, 5)
+#define SSD130X_SET_COM_PINS_CONFIG2_SET(val)	FIELD_PREP(SSD130X_SET_COM_PINS_CONFIG2_MASK, (val))
+
+#define SSD130X_SET_ADDRESS_MODE_HORIZONTAL	0x00
+#define SSD130X_SET_ADDRESS_MODE_VERTICAL	0x01
+#define SSD130X_SET_ADDRESS_MODE_PAGE		0x02
+
+#define SSD130X_SET_AREA_COLOR_MODE_ENABLE	0x1e
+#define SSD130X_SET_AREA_COLOR_MODE_LOW_POWER	0x05
+
+#define MAX_CONTRAST 255
+
+static inline struct ssd130x_device *drm_to_ssd130x(struct drm_device *drm)
+{
+	return container_of(drm, struct ssd130x_device, drm);
+}
+
+/*
+ * Helper to write data (SSD130X_DATA) to the device.
+ */
+static int ssd130x_write_data(struct ssd130x_device *ssd130x, u8 *values, int count)
+{
+	return regmap_bulk_write(ssd130x->regmap, SSD130X_DATA, values, count);
+}
+
+/*
+ * Helper to write command (SSD130X_COMMAND). The fist variadic argument
+ * is the command to write and the following are the command options.
+ *
+ * Note that the ssd130x protocol requires each command and option to be
+ * written as a SSD130X_COMMAND device register value. That is why a call
+ * to regmap_write(..., SSD130X_COMMAND, ...) is done for each argument.
+ */
+static int ssd130x_write_cmd(struct ssd130x_device *ssd130x, int count,
+			     /* u8 cmd, u8 option, ... */...)
+{
+	va_list ap;
+	u8 value;
+	int ret;
+
+	va_start(ap, count);
+
+	do {
+		value = va_arg(ap, int);
+		ret = regmap_write(ssd130x->regmap, SSD130X_COMMAND, value);
+		if (ret)
+			goto out_end;
+	} while (--count);
+
+out_end:
+	va_end(ap);
+
+	return ret;
+}
+
+static int ssd130x_set_col_range(struct ssd130x_device *ssd130x,
+				 u8 col_start, u8 cols)
+{
+	u8 col_end = col_start + cols - 1;
+	int ret;
+
+	if (col_start == ssd130x->col_start && col_end == ssd130x->col_end)
+		return 0;
+
+	ret = ssd130x_write_cmd(ssd130x, 3, SSD130X_SET_COL_RANGE, col_start, col_end);
+	if (ret < 0)
+		return ret;
+
+	ssd130x->col_start = col_start;
+	ssd130x->col_end = col_end;
+	return 0;
+}
+
+static int ssd130x_set_page_range(struct ssd130x_device *ssd130x,
+				  u8 page_start, u8 pages)
+{
+	u8 page_end = page_start + pages - 1;
+	int ret;
+
+	if (page_start == ssd130x->page_start && page_end == ssd130x->page_end)
+		return 0;
+
+	ret = ssd130x_write_cmd(ssd130x, 3, SSD130X_SET_PAGE_RANGE, page_start, page_end);
+	if (ret < 0)
+		return ret;
+
+	ssd130x->page_start = page_start;
+	ssd130x->page_end = page_end;
+	return 0;
+}
+
+static int ssd130x_pwm_enable(struct ssd130x_device *ssd130x)
+{
+	struct device *dev = ssd130x->dev;
+	struct pwm_state pwmstate;
+
+	ssd130x->pwm = pwm_get(dev, NULL);
+	if (IS_ERR(ssd130x->pwm)) {
+		dev_err(dev, "Could not get PWM from firmware description!\n");
+		return PTR_ERR(ssd130x->pwm);
+	}
+
+	pwm_init_state(ssd130x->pwm, &pwmstate);
+	pwm_set_relative_duty_cycle(&pwmstate, 50, 100);
+	pwm_apply_state(ssd130x->pwm, &pwmstate);
+
+	/* Enable the PWM */
+	pwm_enable(ssd130x->pwm);
+
+	dev_dbg(dev, "Using PWM%d with a %lluns period.\n",
+		ssd130x->pwm->pwm, pwm_get_period(ssd130x->pwm));
+
+	return 0;
+}
+
+static void ssd130x_reset(struct ssd130x_device *ssd130x)
+{
+	if (!ssd130x->reset)
+		return;
+
+	/* Reset the screen */
+	gpiod_set_value_cansleep(ssd130x->reset, 1);
+	udelay(4);
+	gpiod_set_value_cansleep(ssd130x->reset, 0);
+	udelay(4);
+}
+
+static int ssd130x_power_on(struct ssd130x_device *ssd130x)
+{
+	struct device *dev = ssd130x->dev;
+	int ret;
+
+	ssd130x_reset(ssd130x);
+
+	ret = regulator_enable(ssd130x->vcc_reg);
+	if (ret) {
+		dev_err(dev, "Failed to enable VCC: %d\n", ret);
+		return ret;
+	}
+
+	if (ssd130x->device_info->need_pwm) {
+		ret = ssd130x_pwm_enable(ssd130x);
+		if (ret) {
+			dev_err(dev, "Failed to enable PWM: %d\n", ret);
+			regulator_disable(ssd130x->vcc_reg);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static void ssd130x_power_off(struct ssd130x_device *ssd130x)
+{
+	pwm_disable(ssd130x->pwm);
+	pwm_put(ssd130x->pwm);
+
+	regulator_disable(ssd130x->vcc_reg);
+}
+
+static int ssd130x_init(struct ssd130x_device *ssd130x)
+{
+	u32 precharge, dclk, com_invdir, compins, chargepump;
+	int ret;
+
+	/* Set initial contrast */
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_CONTRAST, ssd130x->contrast);
+	if (ret < 0)
+		return ret;
+
+	/* Set segment re-map */
+	if (ssd130x->seg_remap) {
+		ret = ssd130x_write_cmd(ssd130x, 1, SSD130X_SEG_REMAP_ON);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Set COM direction */
+	com_invdir = (SSD130X_SET_COM_SCAN_DIR |
+		      SSD130X_SET_COM_SCAN_DIR_SET(ssd130x->com_invdir));
+	ret = ssd130x_write_cmd(ssd130x,  1, com_invdir);
+	if (ret < 0)
+		return ret;
+
+	/* Set multiplex ratio value */
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
+	if (ret < 0)
+		return ret;
+
+	/* set display offset value */
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_DISPLAY_OFFSET, ssd130x->com_offset);
+	if (ret < 0)
+		return ret;
+
+	/* Set clock frequency */
+	dclk = (SSD130X_SET_CLOCK_DIV_SET(ssd130x->dclk_div - 1) |
+		SSD130X_SET_CLOCK_FREQ_SET(ssd130x->dclk_frq));
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_CLOCK_FREQ, dclk);
+	if (ret < 0)
+		return ret;
+
+	/* Set Area Color Mode ON/OFF & Low Power Display Mode */
+	if (ssd130x->area_color_enable || ssd130x->low_power) {
+		u32 mode = 0;
+
+		if (ssd130x->area_color_enable)
+			mode |= SSD130X_SET_AREA_COLOR_MODE_ENABLE;
+
+		if (ssd130x->low_power)
+			mode |= SSD130X_SET_AREA_COLOR_MODE_LOW_POWER;
+
+		ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_AREA_COLOR_MODE, mode);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Set precharge period in number of ticks from the internal clock */
+	precharge = (SSD130X_SET_PRECHARGE_PERIOD1_SET(ssd130x->prechargep1) |
+		     SSD130X_SET_PRECHARGE_PERIOD1_SET(ssd130x->prechargep2));
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_PRECHARGE_PERIOD, precharge);
+	if (ret < 0)
+		return ret;
+
+	/* Set COM pins configuration */
+	compins = BIT(1);
+	compins |= (SSD130X_SET_COM_PINS_CONFIG1_SET(ssd130x->com_seq) |
+		    SSD130X_SET_COM_PINS_CONFIG2_SET(ssd130x->com_lrremap));
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_COM_PINS_CONFIG, compins);
+	if (ret < 0)
+		return ret;
+
+	/* Set VCOMH */
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_VCOMH, ssd130x->vcomh);
+	if (ret < 0)
+		return ret;
+
+	/* Turn on the DC-DC Charge Pump */
+	chargepump = BIT(4);
+
+	if (ssd130x->device_info->need_chargepump)
+		chargepump |= BIT(2);
+
+	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_CHARGE_PUMP, chargepump);
+	if (ret < 0)
+		return ret;
+
+	/* Set lookup table */
+	if (ssd130x->lookup_table_set) {
+		int i;
+
+		ret = ssd130x_write_cmd(ssd130x, 1, SSD130X_SET_LOOKUP_TABLE);
+		if (ret < 0)
+			return ret;
+
+		for (i = 0; i < ARRAY_SIZE(ssd130x->lookup_table); i++) {
+			u8 val = ssd130x->lookup_table[i];
+
+			if (val < 31 || val > 63)
+				dev_warn(ssd130x->dev,
+					 "lookup table index %d value out of range 31 <= %d <= 63\n",
+					 i, val);
+			ret = ssd130x_write_cmd(ssd130x, 1, val);
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	/* Switch to horizontal addressing mode */
+	return ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_ADDRESS_MODE,
+				 SSD130X_SET_ADDRESS_MODE_HORIZONTAL);
+}
+
+static int ssd130x_update_rect(struct ssd130x_device *ssd130x, u8 *buf,
+			       struct drm_rect *rect)
+{
+	unsigned int x = rect->x1;
+	unsigned int y = rect->y1;
+	unsigned int width = drm_rect_width(rect);
+	unsigned int height = drm_rect_height(rect);
+	unsigned int line_length = DIV_ROUND_UP(width, 8);
+	unsigned int pages = DIV_ROUND_UP(y % 8 + height, 8);
+	u32 array_idx = 0;
+	int ret, i, j, k;
+	u8 *data_array = NULL;
+
+	data_array = kcalloc(width, pages, GFP_KERNEL);
+	if (!data_array)
+		return -ENOMEM;
+
+	/*
+	 * The screen is divided in pages, each having a height of 8
+	 * pixels, and the width of the screen. When sending a byte of
+	 * data to the controller, it gives the 8 bits for the current
+	 * column. I.e, the first byte are the 8 bits of the first
+	 * column, then the 8 bits for the second column, etc.
+	 *
+	 *
+	 * Representation of the screen, assuming it is 5 bits
+	 * wide. Each letter-number combination is a bit that controls
+	 * one pixel.
+	 *
+	 * A0 A1 A2 A3 A4
+	 * B0 B1 B2 B3 B4
+	 * C0 C1 C2 C3 C4
+	 * D0 D1 D2 D3 D4
+	 * E0 E1 E2 E3 E4
+	 * F0 F1 F2 F3 F4
+	 * G0 G1 G2 G3 G4
+	 * H0 H1 H2 H3 H4
+	 *
+	 * If you want to update this screen, you need to send 5 bytes:
+	 *  (1) A0 B0 C0 D0 E0 F0 G0 H0
+	 *  (2) A1 B1 C1 D1 E1 F1 G1 H1
+	 *  (3) A2 B2 C2 D2 E2 F2 G2 H2
+	 *  (4) A3 B3 C3 D3 E3 F3 G3 H3
+	 *  (5) A4 B4 C4 D4 E4 F4 G4 H4
+	 */
+
+	ret = ssd130x_set_col_range(ssd130x, ssd130x->col_offset + x, width);
+	if (ret < 0)
+		goto out_free;
+
+	ret = ssd130x_set_page_range(ssd130x, ssd130x->page_offset + y / 8, pages);
+	if (ret < 0)
+		goto out_free;
+
+	for (i = y / 8; i < y / 8 + pages; i++) {
+		int m = 8;
+
+		/* Last page may be partial */
+		if (8 * (i + 1) > ssd130x->height)
+			m = ssd130x->height % 8;
+		for (j = x; j < x + width; j++) {
+			u8 data = 0;
+
+			for (k = 0; k < m; k++) {
+				u8 byte = buf[(8 * i + k) * line_length + j / 8];
+				u8 bit = (byte >> (j % 8)) & 1;
+
+				data |= bit << k;
+			}
+			data_array[array_idx++] = data;
+		}
+	}
+
+	ret = ssd130x_write_data(ssd130x, data_array, width * pages);
+
+out_free:
+	kfree(data_array);
+	return ret;
+}
+
+static void ssd130x_clear_screen(struct ssd130x_device *ssd130x)
+{
+	u8 *buf = NULL;
+	struct drm_rect fullscreen = {
+		.x1 = 0,
+		.x2 = ssd130x->width,
+		.y1 = 0,
+		.y2 = ssd130x->height,
+	};
+
+	buf = kcalloc(ssd130x->width, ssd130x->height, GFP_KERNEL);
+	if (!buf)
+		return;
+
+	ssd130x_update_rect(ssd130x, buf, &fullscreen);
+
+	kfree(buf);
+}
+
+static int ssd130x_fb_blit_rect(struct drm_framebuffer *fb, const struct iosys_map *map,
+				struct drm_rect *rect)
+{
+	struct ssd130x_device *ssd130x = drm_to_ssd130x(fb->dev);
+	void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
+	int ret = 0;
+	u8 *buf = NULL;
+
+	buf = kcalloc(fb->width, fb->height, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	drm_fb_xrgb8888_to_mono_reversed(buf, 0, vmap, fb, rect);
+
+	ssd130x_update_rect(ssd130x, buf, rect);
+
+	kfree(buf);
+
+	return ret;
+}
+
+static int ssd130x_display_pipe_mode_valid(struct drm_simple_display_pipe *pipe,
+					   const struct drm_display_mode *mode)
+{
+	struct ssd130x_device *ssd130x = drm_to_ssd130x(pipe->crtc.dev);
+
+	if (mode->hdisplay != ssd130x->mode.hdisplay &&
+	    mode->vdisplay != ssd130x->mode.vdisplay)
+		return MODE_ONE_SIZE;
+
+	if (mode->hdisplay != ssd130x->mode.hdisplay)
+		return MODE_ONE_WIDTH;
+
+	if (mode->vdisplay != ssd130x->mode.vdisplay)
+		return MODE_ONE_HEIGHT;
+
+	return MODE_OK;
+}
+
+static void ssd130x_display_pipe_enable(struct drm_simple_display_pipe *pipe,
+					struct drm_crtc_state *crtc_state,
+					struct drm_plane_state *plane_state)
+{
+	struct ssd130x_device *ssd130x = drm_to_ssd130x(pipe->crtc.dev);
+	struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
+	struct drm_device *drm = &ssd130x->drm;
+	int idx, ret;
+
+	ret = ssd130x_power_on(ssd130x);
+	if (ret)
+		return;
+
+	ret = ssd130x_init(ssd130x);
+	if (ret)
+		goto out_power_off;
+
+	if (!drm_dev_enter(drm, &idx))
+		goto out_power_off;
+
+	ssd130x_fb_blit_rect(plane_state->fb, &shadow_plane_state->data[0], &plane_state->dst);
+
+	ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_ON);
+
+	backlight_enable(ssd130x->bl_dev);
+
+	drm_dev_exit(idx);
+
+	return;
+out_power_off:
+	ssd130x_power_off(ssd130x);
+}
+
+static void ssd130x_display_pipe_disable(struct drm_simple_display_pipe *pipe)
+{
+	struct ssd130x_device *ssd130x = drm_to_ssd130x(pipe->crtc.dev);
+	struct drm_device *drm = &ssd130x->drm;
+	int idx;
+
+	if (!drm_dev_enter(drm, &idx))
+		return;
+
+	ssd130x_clear_screen(ssd130x);
+
+	backlight_disable(ssd130x->bl_dev);
+
+	ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_OFF);
+
+	ssd130x_power_off(ssd130x);
+
+	drm_dev_exit(idx);
+}
+
+static void ssd130x_display_pipe_update(struct drm_simple_display_pipe *pipe,
+					struct drm_plane_state *old_plane_state)
+{
+	struct ssd130x_device *ssd130x = drm_to_ssd130x(pipe->crtc.dev);
+	struct drm_plane_state *plane_state = pipe->plane.state;
+	struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
+	struct drm_framebuffer *fb = plane_state->fb;
+	struct drm_device *drm = &ssd130x->drm;
+	struct drm_rect src_clip, dst_clip;
+	int idx;
+
+	if (!fb)
+		return;
+
+	if (!pipe->crtc.state->active)
+		return;
+
+	if (!drm_atomic_helper_damage_merged(old_plane_state, plane_state, &src_clip))
+		return;
+
+	dst_clip = plane_state->dst;
+	if (!drm_rect_intersect(&dst_clip, &src_clip))
+		return;
+
+	if (!drm_dev_enter(drm, &idx))
+		return;
+
+	ssd130x_fb_blit_rect(plane_state->fb, &shadow_plane_state->data[0], &dst_clip);
+
+	drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs ssd130x_pipe_funcs = {
+	.mode_valid = ssd130x_display_pipe_mode_valid,
+	.enable = ssd130x_display_pipe_enable,
+	.disable = ssd130x_display_pipe_disable,
+	.update = ssd130x_display_pipe_update,
+	DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS,
+};
+
+static int ssd130x_connector_get_modes(struct drm_connector *connector)
+{
+	struct ssd130x_device *ssd130x = drm_to_ssd130x(connector->dev);
+	struct drm_display_mode *mode = &ssd130x->mode;
+	struct device *dev = ssd130x->dev;
+
+	mode = drm_mode_duplicate(connector->dev, &ssd130x->mode);
+	if (!mode) {
+		dev_err(dev, "Failed to duplicated mode\n");
+		return 0;
+	}
+
+	drm_mode_probed_add(connector, mode);
+	drm_set_preferred_mode(connector, mode->hdisplay, mode->vdisplay);
+
+	/* There is only a single mode */
+	return 1;
+}
+
+static const struct drm_connector_helper_funcs ssd130x_connector_helper_funcs = {
+	.get_modes = ssd130x_connector_get_modes,
+};
+
+static const struct drm_connector_funcs ssd130x_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_mode_config_funcs ssd130x_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create_with_dirty,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static const uint32_t ssd130x_formats[] = {
+	DRM_FORMAT_XRGB8888,
+};
+
+DEFINE_DRM_GEM_FOPS(ssd130x_fops);
+
+static const struct drm_driver ssd130x_drm_driver = {
+	DRM_GEM_SHMEM_DRIVER_OPS,
+	.name			= DRIVER_NAME,
+	.desc			= DRIVER_DESC,
+	.date			= DRIVER_DATE,
+	.major			= DRIVER_MAJOR,
+	.minor			= DRIVER_MINOR,
+	.driver_features	= DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
+	.fops			= &ssd130x_fops,
+};
+
+static int ssd130x_update_bl(struct backlight_device *bdev)
+{
+	struct ssd130x_device *ssd130x = bl_get_data(bdev);
+	int brightness = backlight_get_brightness(bdev);
+	int ret;
+
+	ssd130x->contrast = brightness;
+
+	ret = ssd130x_write_cmd(ssd130x, 1, SSD130X_CONTRAST);
+	if (ret < 0)
+		return ret;
+
+	ret = ssd130x_write_cmd(ssd130x, 1, ssd130x->contrast);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct backlight_ops ssd130xfb_bl_ops = {
+	.update_status	= ssd130x_update_bl,
+};
+
+static void ssd130x_parse_properties(struct ssd130x_device *ssd130x)
+{
+	struct device *dev = ssd130x->dev;
+
+	if (device_property_read_u32(dev, "solomon,width", &ssd130x->width))
+		ssd130x->width = 96;
+
+	if (device_property_read_u32(dev, "solomon,height", &ssd130x->height))
+		ssd130x->height = 16;
+
+	if (device_property_read_u32(dev, "solomon,page-offset", &ssd130x->page_offset))
+		ssd130x->page_offset = 1;
+
+	if (device_property_read_u32(dev, "solomon,col-offset", &ssd130x->col_offset))
+		ssd130x->col_offset = 0;
+
+	if (device_property_read_u32(dev, "solomon,com-offset", &ssd130x->com_offset))
+		ssd130x->com_offset = 0;
+
+	if (device_property_read_u32(dev, "solomon,prechargep1", &ssd130x->prechargep1))
+		ssd130x->prechargep1 = 2;
+
+	if (device_property_read_u32(dev, "solomon,prechargep2", &ssd130x->prechargep2))
+		ssd130x->prechargep2 = 2;
+
+	if (!device_property_read_u8_array(dev, "solomon,lookup-table",
+					   ssd130x->lookup_table,
+					   ARRAY_SIZE(ssd130x->lookup_table)))
+		ssd130x->lookup_table_set = 1;
+
+	ssd130x->seg_remap = !device_property_read_bool(dev, "solomon,segment-no-remap");
+	ssd130x->com_seq = device_property_read_bool(dev, "solomon,com-seq");
+	ssd130x->com_lrremap = device_property_read_bool(dev, "solomon,com-lrremap");
+	ssd130x->com_invdir = device_property_read_bool(dev, "solomon,com-invdir");
+	ssd130x->area_color_enable =
+		device_property_read_bool(dev, "solomon,area-color-enable");
+	ssd130x->low_power = device_property_read_bool(dev, "solomon,low-power");
+
+	ssd130x->contrast = 127;
+	ssd130x->vcomh = ssd130x->device_info->default_vcomh;
+
+	/* Setup display timing */
+	if (device_property_read_u32(dev, "solomon,dclk-div", &ssd130x->dclk_div))
+		ssd130x->dclk_div = ssd130x->device_info->default_dclk_div;
+	if (device_property_read_u32(dev, "solomon,dclk-frq", &ssd130x->dclk_frq))
+		ssd130x->dclk_frq = ssd130x->device_info->default_dclk_frq;
+}
+
+static int ssd130x_init_modeset(struct ssd130x_device *ssd130x)
+{
+	struct drm_display_mode *mode = &ssd130x->mode;
+	struct device *dev = ssd130x->dev;
+	struct drm_device *drm = &ssd130x->drm;
+	unsigned long max_width, max_height;
+	int ret;
+
+	ret = drmm_mode_config_init(drm);
+	if (ret) {
+		dev_err(dev, "DRM mode config init failed: %d\n", ret);
+		return ret;
+	}
+
+	mode->type = DRM_MODE_TYPE_DRIVER;
+	mode->clock = 1;
+	mode->hdisplay = mode->htotal = ssd130x->width;
+	mode->hsync_start = mode->hsync_end = ssd130x->width;
+	mode->vdisplay = mode->vtotal = ssd130x->height;
+	mode->vsync_start = mode->vsync_end = ssd130x->height;
+	mode->width_mm = 27;
+	mode->height_mm = 27;
+
+	max_width = max_t(unsigned long, mode->hdisplay, DRM_SHADOW_PLANE_MAX_WIDTH);
+	max_height = max_t(unsigned long, mode->vdisplay, DRM_SHADOW_PLANE_MAX_HEIGHT);
+
+	drm->mode_config.min_width = mode->hdisplay;
+	drm->mode_config.max_width = max_width;
+	drm->mode_config.min_height = mode->vdisplay;
+	drm->mode_config.max_height = max_height;
+	drm->mode_config.preferred_depth = 32;
+	drm->mode_config.funcs = &ssd130x_mode_config_funcs;
+
+	ret = drm_connector_init(drm, &ssd130x->connector, &ssd130x_connector_funcs,
+				 DRM_MODE_CONNECTOR_Unknown);
+	if (ret) {
+		dev_err(dev, "DRM connector init failed: %d\n", ret);
+		return ret;
+	}
+
+	drm_connector_helper_add(&ssd130x->connector, &ssd130x_connector_helper_funcs);
+
+	ret = drm_simple_display_pipe_init(drm, &ssd130x->pipe, &ssd130x_pipe_funcs,
+					   ssd130x_formats, ARRAY_SIZE(ssd130x_formats),
+					   NULL, &ssd130x->connector);
+	if (ret) {
+		dev_err(dev, "DRM simple display pipeline init failed: %d\n", ret);
+		return ret;
+	}
+
+	drm_plane_enable_fb_damage_clips(&ssd130x->pipe.plane);
+
+	drm_mode_config_reset(drm);
+
+	return 0;
+}
+
+static int ssd130x_get_resources(struct ssd130x_device *ssd130x)
+{
+	struct device *dev = ssd130x->dev;
+
+	ssd130x->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ssd130x->reset))
+		return dev_err_probe(dev, PTR_ERR(ssd130x->reset),
+				     "Failed to get reset gpio\n");
+
+	ssd130x->vcc_reg = devm_regulator_get(dev, "vcc");
+	if (IS_ERR(ssd130x->vcc_reg))
+		return dev_err_probe(dev, PTR_ERR(ssd130x->vcc_reg),
+				     "Failed to get VCC regulator\n");
+
+	return 0;
+}
+
+struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap)
+{
+	struct ssd130x_device *ssd130x;
+	struct backlight_device *bl;
+	struct drm_device *drm;
+	int ret;
+
+	ssd130x = devm_drm_dev_alloc(dev, &ssd130x_drm_driver,
+				     struct ssd130x_device, drm);
+	if (IS_ERR(ssd130x))
+		return ERR_PTR(dev_err_probe(dev, PTR_ERR(ssd130x),
+					     "Failed to allocate DRM device\n"));
+
+	drm = &ssd130x->drm;
+
+	ssd130x->dev = dev;
+	ssd130x->regmap = regmap;
+	ssd130x->device_info = device_get_match_data(dev);
+
+	ssd130x_parse_properties(ssd130x);
+
+	ret = ssd130x_get_resources(ssd130x);
+	if (ret)
+		return ERR_PTR(ret);
+
+	bl = devm_backlight_device_register(dev, dev_name(dev), dev, ssd130x,
+					    &ssd130xfb_bl_ops, NULL);
+	if (IS_ERR(bl))
+		return ERR_PTR(dev_err_probe(dev, PTR_ERR(bl),
+					     "Unable to register backlight device\n"));
+
+	bl->props.brightness = ssd130x->contrast;
+	bl->props.max_brightness = MAX_CONTRAST;
+	ssd130x->bl_dev = bl;
+
+	ret = ssd130x_init_modeset(ssd130x);
+	if (ret)
+		return ERR_PTR(ret);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		return ERR_PTR(dev_err_probe(dev, ret, "DRM device register failed\n"));
+
+	drm_fbdev_generic_setup(drm, 0);
+
+	return ssd130x;
+}
+EXPORT_SYMBOL_GPL(ssd130x_probe);
+
+int ssd130x_remove(struct ssd130x_device *ssd130x)
+{
+	drm_dev_unplug(&ssd130x->drm);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ssd130x_remove);
+
+void ssd130x_shutdown(struct ssd130x_device *ssd130x)
+{
+	drm_atomic_helper_shutdown(&ssd130x->drm);
+}
+EXPORT_SYMBOL_GPL(ssd130x_shutdown);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/solomon/ssd130x.h b/drivers/gpu/drm/solomon/ssd130x.h
new file mode 100644
index 000000000000..cd21cdccb566
--- /dev/null
+++ b/drivers/gpu/drm/solomon/ssd130x.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Header file for:
+ * DRM driver for Solomon SSD130x OLED displays
+ *
+ * Copyright 2022 Red Hat Inc.
+ * Author: Javier Martinez Canillas <javierm@redhat.com>
+ *
+ * Based on drivers/video/fbdev/ssd1307fb.c
+ * Copyright 2012 Free Electrons
+ */
+
+#ifndef __SSD1307X_H__
+#define __SSD1307X_H__
+
+#include <drm/drm_drv.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include <linux/regmap.h>
+
+struct ssd130x_deviceinfo {
+	u32 default_vcomh;
+	u32 default_dclk_div;
+	u32 default_dclk_frq;
+	int need_pwm;
+	int need_chargepump;
+};
+
+struct ssd130x_device {
+	struct drm_device drm;
+	struct device *dev;
+	struct drm_simple_display_pipe pipe;
+	struct drm_display_mode mode;
+	struct drm_connector connector;
+	struct i2c_client *client;
+
+	struct regmap *regmap;
+
+	const struct ssd130x_deviceinfo *device_info;
+
+	unsigned area_color_enable : 1;
+	unsigned com_invdir : 1;
+	unsigned com_lrremap : 1;
+	unsigned com_seq : 1;
+	unsigned lookup_table_set : 1;
+	unsigned low_power : 1;
+	unsigned seg_remap : 1;
+	u32 com_offset;
+	u32 contrast;
+	u32 dclk_div;
+	u32 dclk_frq;
+	u32 height;
+	u8 lookup_table[4];
+	u32 page_offset;
+	u32 col_offset;
+	u32 prechargep1;
+	u32 prechargep2;
+
+	struct backlight_device *bl_dev;
+	struct pwm_device *pwm;
+	struct gpio_desc *reset;
+	struct regulator *vcc_reg;
+	u32 vcomh;
+	u32 width;
+	/* Cached address ranges */
+	u8 col_start;
+	u8 col_end;
+	u8 page_start;
+	u8 page_end;
+};
+
+struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap);
+int ssd130x_remove(struct ssd130x_device *ssd130x);
+void ssd130x_shutdown(struct ssd130x_device *ssd130x);
+
+#endif /* __SSD1307X_H__ */
diff --git a/drivers/gpu/drm/sprd/Kconfig b/drivers/gpu/drm/sprd/Kconfig
index 3edeaeca0e65..9a9c7ebfc716 100644
--- a/drivers/gpu/drm/sprd/Kconfig
+++ b/drivers/gpu/drm/sprd/Kconfig
@@ -3,7 +3,6 @@ config DRM_SPRD
 	depends on ARCH_SPRD || COMPILE_TEST
 	depends on DRM && OF
 	select DRM_GEM_CMA_HELPER
-	select DRM_KMS_CMA_HELPER
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
 	select VIDEOMODE_HELPERS
diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c
index 06a3414ee43a..1637203ea103 100644
--- a/drivers/gpu/drm/sprd/sprd_dpu.c
+++ b/drivers/gpu/drm/sprd/sprd_dpu.c
@@ -790,6 +790,11 @@ static int sprd_dpu_context_init(struct sprd_dpu *dpu,
 	int ret;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "failed to get I/O resource\n");
+		return -EINVAL;
+	}
+
 	ctx->base = devm_ioremap(dev, res->start, resource_size(res));
 	if (!ctx->base) {
 		dev_err(dev, "failed to map dpu registers\n");
diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c
index a077e2d4d721..a60ecdd67d98 100644
--- a/drivers/gpu/drm/sprd/sprd_drm.c
+++ b/drivers/gpu/drm/sprd/sprd_drm.c
@@ -43,7 +43,6 @@ static void sprd_drm_mode_config_init(struct drm_device *drm)
 	drm->mode_config.min_height = 0;
 	drm->mode_config.max_width = 8192;
 	drm->mode_config.max_height = 8192;
-	drm->mode_config.allow_fb_modifiers = true;
 
 	drm->mode_config.funcs = &sprd_drm_mode_config_funcs;
 	drm->mode_config.helper_private = &sprd_drm_mode_config_helper;
@@ -155,7 +154,7 @@ static void sprd_drm_shutdown(struct platform_device *pdev)
 	struct drm_device *drm = platform_get_drvdata(pdev);
 
 	if (!drm) {
-		drm_warn(drm, "drm device is not available, no shutdown\n");
+		dev_warn(&pdev->dev, "drm device is not available, no shutdown\n");
 		return;
 	}
 
@@ -186,6 +185,9 @@ static struct platform_driver *sprd_drm_drivers[]  = {
 
 static int __init sprd_drm_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	return platform_register_drivers(sprd_drm_drivers,
 					ARRAY_SIZE(sprd_drm_drivers));
 }
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c
index 911b3cddc264..12b67a5d5923 100644
--- a/drivers/gpu/drm/sprd/sprd_dsi.c
+++ b/drivers/gpu/drm/sprd/sprd_dsi.c
@@ -907,6 +907,11 @@ static int sprd_dsi_context_init(struct sprd_dsi *dsi,
 	struct resource *res;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "failed to get I/O resource\n");
+		return -EINVAL;
+	}
+
 	ctx->base = devm_ioremap(dev, res->start, resource_size(res));
 	if (!ctx->base) {
 		drm_err(dsi->drm, "failed to map dsi host registers\n");
diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index c7efb43b83ee..860b2230aa08 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -287,6 +287,9 @@ static struct platform_driver * const drivers[] = {
 
 static int sti_drm_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
 }
 module_init(sti_drm_init);
diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index 9f441aadf2d5..0da7cce2a1a2 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -22,6 +22,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -241,7 +242,7 @@ static struct platform_driver stm_drm_platform_driver = {
 	},
 };
 
-module_platform_driver(stm_drm_platform_driver);
+drm_module_platform_driver(stm_drm_platform_driver);
 
 MODULE_AUTHOR("Philippe Cornu <philippe.cornu@st.com>");
 MODULE_AUTHOR("Yannick Fertre <yannick.fertre@st.com>");
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index b630614b3d72..a3fd441dd9ad 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -19,6 +19,7 @@
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
@@ -441,7 +442,7 @@ static struct platform_driver sun4i_drv_platform_driver = {
 		.pm = &sun4i_drv_drm_pm_ops,
 	},
 };
-module_platform_driver(sun4i_drv_platform_driver);
+drm_module_platform_driver(sun4i_drv_platform_driver);
 
 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index e9de91a4e7e8..9464f522e257 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1410,6 +1410,9 @@ static int __init host1x_drm_init(void)
 {
 	int err;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	err = host1x_driver_register(&host1x_drm_driver);
 	if (err < 0)
 		return err;
diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
index 7c784e90e40e..04cfff89ee51 100644
--- a/drivers/gpu/drm/tidss/tidss_drv.c
+++ b/drivers/gpu/drm/tidss/tidss_drv.c
@@ -17,6 +17,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_managed.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 
 #include "tidss_dispc.h"
@@ -251,7 +252,7 @@ static struct platform_driver tidss_platform_driver = {
 	},
 };
 
-module_platform_driver(tidss_platform_driver);
+drm_module_platform_driver(tidss_platform_driver);
 
 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
 MODULE_DESCRIPTION("TI Keystone DSS Driver");
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index cc567c87057d..eee3c447fbac 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -604,6 +604,9 @@ static struct platform_driver tilcdc_platform_driver = {
 
 static int __init tilcdc_drm_init(void)
 {
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	DBG("init");
 	tilcdc_panel_init();
 	return platform_driver_register(&tilcdc_platform_driver);
diff --git a/drivers/gpu/drm/tiny/arcpgu.c b/drivers/gpu/drm/tiny/arcpgu.c
index f8531c50a072..f0fa3b15c341 100644
--- a/drivers/gpu/drm/tiny/arcpgu.c
+++ b/drivers/gpu/drm/tiny/arcpgu.c
@@ -15,6 +15,7 @@
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
@@ -427,7 +428,7 @@ static struct platform_driver arcpgu_platform_driver = {
 		   },
 };
 
-module_platform_driver(arcpgu_platform_driver);
+drm_module_platform_driver(arcpgu_platform_driver);
 
 MODULE_AUTHOR("Carlos Palminha <palminha@synopsys.com>");
 MODULE_DESCRIPTION("ARC PGU DRM driver");
diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c
index 29ee2eda7b7d..9a477f0fddee 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -41,6 +41,8 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
                        const struct ttm_place *place,
                        struct ttm_resource *res)
 {
+	struct ttm_resource_manager *man;
+
 	res->start = 0;
 	res->num_pages = PFN_UP(bo->base.size);
 	res->mem_type = place->mem_type;
@@ -50,6 +52,11 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
 	res->bus.is_iomem = false;
 	res->bus.caching = ttm_cached;
 	res->bo = bo;
+
+	man = ttm_manager_type(bo->bdev, place->mem_type);
+	spin_lock(&bo->bdev->lru_lock);
+	man->usage += bo->base.size;
+	spin_unlock(&bo->bdev->lru_lock);
 }
 EXPORT_SYMBOL(ttm_resource_init);
 
@@ -65,6 +72,9 @@ EXPORT_SYMBOL(ttm_resource_init);
 void ttm_resource_fini(struct ttm_resource_manager *man,
 		       struct ttm_resource *res)
 {
+	spin_lock(&man->bdev->lru_lock);
+	man->usage -= res->bo->base.size;
+	spin_unlock(&man->bdev->lru_lock);
 }
 EXPORT_SYMBOL(ttm_resource_fini);
 
@@ -153,19 +163,20 @@ void ttm_resource_set_bo(struct ttm_resource *res,
  *
  * @man: memory manager object to init
  * @bdev: ttm device this manager belongs to
- * @p_size: size managed area in pages.
+ * @size: size of managed resources in arbitrary units
  *
  * Initialise core parts of a manager object.
  */
 void ttm_resource_manager_init(struct ttm_resource_manager *man,
 			       struct ttm_device *bdev,
-			       unsigned long p_size)
+			       uint64_t size)
 {
 	unsigned i;
 
 	spin_lock_init(&man->move_lock);
 	man->bdev = bdev;
-	man->size = p_size;
+	man->size = size;
+	man->usage = 0;
 
 	for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i)
 		INIT_LIST_HEAD(&man->lru[i]);
@@ -227,6 +238,24 @@ int ttm_resource_manager_evict_all(struct ttm_device *bdev,
 EXPORT_SYMBOL(ttm_resource_manager_evict_all);
 
 /**
+ * ttm_resource_manager_usage
+ *
+ * @man: A memory manager object.
+ *
+ * Return how many resources are currently used.
+ */
+uint64_t ttm_resource_manager_usage(struct ttm_resource_manager *man)
+{
+	uint64_t usage;
+
+	spin_lock(&man->bdev->lru_lock);
+	usage = man->usage;
+	spin_unlock(&man->bdev->lru_lock);
+	return usage;
+}
+EXPORT_SYMBOL(ttm_resource_manager_usage);
+
+/**
  * ttm_resource_manager_debug
  *
  * @man: manager type to dump.
@@ -238,6 +267,7 @@ void ttm_resource_manager_debug(struct ttm_resource_manager *man,
 	drm_printf(p, "  use_type: %d\n", man->use_type);
 	drm_printf(p, "  use_tt: %d\n", man->use_tt);
 	drm_printf(p, "  size: %llu\n", man->size);
+	drm_printf(p, "  usage: %llu\n", ttm_resource_manager_usage(man));
 	if (man->func->debug)
 		man->func->debug(man, p);
 }
diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
index 7fa71c8bb828..6d9d2921abf4 100644
--- a/drivers/gpu/drm/tve200/tve200_drv.c
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -43,6 +43,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_probe_helper.h>
@@ -266,7 +267,7 @@ static struct platform_driver tve200_driver = {
 	.probe = tve200_probe,
 	.remove = tve200_remove,
 };
-module_platform_driver(tve200_driver);
+drm_module_platform_driver(tve200_driver);
 
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c
index 6e3113f419f4..8b3229a37c6d 100644
--- a/drivers/gpu/drm/v3d/v3d_bo.c
+++ b/drivers/gpu/drm/v3d/v3d_bo.c
@@ -59,6 +59,7 @@ static const struct drm_gem_object_funcs v3d_gem_funcs = {
 	.vmap = drm_gem_shmem_object_vmap,
 	.vunmap = drm_gem_shmem_object_vunmap,
 	.mmap = drm_gem_shmem_object_mmap,
+	.vm_ops = &drm_gem_shmem_vm_ops,
 };
 
 /* gem_create_object function for allocating a BO struct and doing
diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index e76b24bb8828..29fd13109e43 100644
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -6,6 +6,7 @@
 #include <linux/debugfs.h>
 #include <linux/pm_runtime.h>
 #include <linux/seq_file.h>
+#include <linux/string_helpers.h>
 
 #include <drm/drm_debugfs.h>
 
@@ -148,15 +149,15 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 		   V3D_GET_FIELD(ident3, V3D_HUB_IDENT3_IPREV),
 		   V3D_GET_FIELD(ident3, V3D_HUB_IDENT3_IPIDX));
 	seq_printf(m, "MMU:        %s\n",
-		   (ident2 & V3D_HUB_IDENT2_WITH_MMU) ? "yes" : "no");
+		   str_yes_no(ident2 & V3D_HUB_IDENT2_WITH_MMU));
 	seq_printf(m, "TFU:        %s\n",
-		   (ident1 & V3D_HUB_IDENT1_WITH_TFU) ? "yes" : "no");
+		   str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_TFU));
 	seq_printf(m, "TSY:        %s\n",
-		   (ident1 & V3D_HUB_IDENT1_WITH_TSY) ? "yes" : "no");
+		   str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_TSY));
 	seq_printf(m, "MSO:        %s\n",
-		   (ident1 & V3D_HUB_IDENT1_WITH_MSO) ? "yes" : "no");
+		   str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_MSO));
 	seq_printf(m, "L3C:        %s (%dkb)\n",
-		   (ident1 & V3D_HUB_IDENT1_WITH_L3C) ? "yes" : "no",
+		   str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_L3C),
 		   V3D_GET_FIELD(ident2, V3D_HUB_IDENT2_L3C_NKB));
 
 	for (core = 0; core < cores; core++) {
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index c7ed2e1cbab6..92bc0faee84f 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -798,7 +798,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 
 		if (!render->base.perfmon) {
 			ret = -ENOENT;
-			goto fail;
+			goto fail_perfmon;
 		}
 	}
 
@@ -847,6 +847,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 
 fail_unreserve:
 	mutex_unlock(&v3d->sched_lock);
+fail_perfmon:
 	drm_gem_unlock_reservations(last_job->bo,
 				    last_job->bo_count, &acquire_ctx);
 fail:
@@ -1027,7 +1028,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
 						     args->perfmon_id);
 		if (!job->base.perfmon) {
 			ret = -ENOENT;
-			goto fail;
+			goto fail_perfmon;
 		}
 	}
 
@@ -1056,6 +1057,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
 
 fail_unreserve:
 	mutex_unlock(&v3d->sched_lock);
+fail_perfmon:
 	drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
 				    &acquire_ctx);
 fail:
diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
index e0cb7d0697a7..39459ae96f30 100644
--- a/drivers/gpu/drm/v3d/v3d_sched.c
+++ b/drivers/gpu/drm/v3d/v3d_sched.c
@@ -391,7 +391,7 @@ v3d_sched_init(struct v3d_dev *v3d)
 			     &v3d_bin_sched_ops,
 			     hw_jobs_limit, job_hang_limit,
 			     msecs_to_jiffies(hang_limit_ms), NULL,
-			     NULL, "v3d_bin");
+			     NULL, "v3d_bin", v3d->drm.dev);
 	if (ret) {
 		dev_err(v3d->drm.dev, "Failed to create bin scheduler: %d.", ret);
 		return ret;
@@ -401,7 +401,7 @@ v3d_sched_init(struct v3d_dev *v3d)
 			     &v3d_render_sched_ops,
 			     hw_jobs_limit, job_hang_limit,
 			     msecs_to_jiffies(hang_limit_ms), NULL,
-			     NULL, "v3d_render");
+			     NULL, "v3d_render", v3d->drm.dev);
 	if (ret) {
 		dev_err(v3d->drm.dev, "Failed to create render scheduler: %d.",
 			ret);
@@ -413,7 +413,7 @@ v3d_sched_init(struct v3d_dev *v3d)
 			     &v3d_tfu_sched_ops,
 			     hw_jobs_limit, job_hang_limit,
 			     msecs_to_jiffies(hang_limit_ms), NULL,
-			     NULL, "v3d_tfu");
+			     NULL, "v3d_tfu", v3d->drm.dev);
 	if (ret) {
 		dev_err(v3d->drm.dev, "Failed to create TFU scheduler: %d.",
 			ret);
@@ -426,7 +426,7 @@ v3d_sched_init(struct v3d_dev *v3d)
 				     &v3d_csd_sched_ops,
 				     hw_jobs_limit, job_hang_limit,
 				     msecs_to_jiffies(hang_limit_ms), NULL,
-				     NULL, "v3d_csd");
+				     NULL, "v3d_csd", v3d->drm.dev);
 		if (ret) {
 			dev_err(v3d->drm.dev, "Failed to create CSD scheduler: %d.",
 				ret);
@@ -438,7 +438,7 @@ v3d_sched_init(struct v3d_dev *v3d)
 				     &v3d_cache_clean_sched_ops,
 				     hw_jobs_limit, job_hang_limit,
 				     msecs_to_jiffies(hang_limit_ms), NULL,
-				     NULL, "v3d_cache_clean");
+				     NULL, "v3d_cache_clean", v3d->drm.dev);
 		if (ret) {
 			dev_err(v3d->drm.dev, "Failed to create CACHE_CLEAN scheduler: %d.",
 				ret);
diff --git a/drivers/gpu/drm/vboxvideo/vbox_drv.c b/drivers/gpu/drm/vboxvideo/vbox_drv.c
index f35d9e44c6b7..f4f2bd79a7cb 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_drv.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_drv.c
@@ -18,6 +18,7 @@
 #include <drm/drm_file.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_managed.h>
+#include <drm/drm_module.h>
 
 #include "vbox_drv.h"
 
@@ -190,24 +191,7 @@ static const struct drm_driver driver = {
 	DRM_GEM_VRAM_DRIVER,
 };
 
-static int __init vbox_init(void)
-{
-	if (drm_firmware_drivers_only() && vbox_modeset == -1)
-		return -EINVAL;
-
-	if (vbox_modeset == 0)
-		return -EINVAL;
-
-	return pci_register_driver(&vbox_pci_driver);
-}
-
-static void __exit vbox_exit(void)
-{
-	pci_unregister_driver(&vbox_pci_driver);
-}
-
-module_init(vbox_init);
-module_exit(vbox_exit);
+drm_module_pci_driver_if_modeset(vbox_pci_driver, vbox_modeset);
 
 MODULE_AUTHOR("Oracle Corporation");
 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index 9300d3354c51..752f921735c6 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -1493,15 +1493,10 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data)
 	struct drm_device *drm = dev_get_drvdata(master);
 	struct vc4_dsi *dsi = dev_get_drvdata(dev);
 	struct vc4_dsi_encoder *vc4_dsi_encoder;
-	const struct of_device_id *match;
 	dma_cap_mask_t dma_mask;
 	int ret;
 
-	match = of_match_device(vc4_dsi_dt_match, dev);
-	if (!match)
-		return -ENODEV;
-
-	dsi->variant = match->data;
+	dsi->variant = of_device_get_match_data(dev);
 
 	vc4_dsi_encoder = devm_kzalloc(dev, sizeof(*vc4_dsi_encoder),
 				       GFP_KERNEL);
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 92b1530aa17b..987cacc1eb15 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1012,30 +1012,15 @@ static void vc4_hdmi_recenter_fifo(struct vc4_hdmi *vc4_hdmi)
 		  "VC4_HDMI_FIFO_CTL_RECENTER_DONE");
 }
 
-static struct drm_connector_state *
-vc4_hdmi_encoder_get_connector_state(struct drm_encoder *encoder,
-				     struct drm_atomic_state *state)
-{
-	struct drm_connector_state *conn_state;
-	struct drm_connector *connector;
-	unsigned int i;
-
-	for_each_new_connector_in_state(state, connector, conn_state, i) {
-		if (conn_state->best_encoder == encoder)
-			return conn_state;
-	}
-
-	return NULL;
-}
-
 static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
 						struct drm_atomic_state *state)
 {
+	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+	struct drm_connector *connector = &vc4_hdmi->connector;
 	struct drm_connector_state *conn_state =
-		vc4_hdmi_encoder_get_connector_state(encoder, state);
+		drm_atomic_get_new_connector_state(state, connector);
 	struct vc4_hdmi_connector_state *vc4_conn_state =
 		conn_state_to_vc4_hdmi_conn_state(conn_state);
-	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
 	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
 	unsigned long pixel_rate = vc4_conn_state->pixel_rate;
 	unsigned long bvb_rate, hsm_rate;
@@ -1249,9 +1234,8 @@ static void vc4_hdmi_encoder_atomic_mode_set(struct drm_encoder *encoder,
 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
 
 	mutex_lock(&vc4_hdmi->mutex);
-	memcpy(&vc4_hdmi->saved_adjusted_mode,
-	       &crtc_state->adjusted_mode,
-	       sizeof(vc4_hdmi->saved_adjusted_mode));
+	drm_mode_copy(&vc4_hdmi->saved_adjusted_mode,
+		      &crtc_state->adjusted_mode);
 	mutex_unlock(&vc4_hdmi->mutex);
 }
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_debugfs.c b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
index b6954e2f75e6..853dd9aa397e 100644
--- a/drivers/gpu/drm/virtio/virtgpu_debugfs.c
+++ b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
@@ -23,6 +23,8 @@
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/string_helpers.h>
+
 #include <drm/drm_debugfs.h>
 #include <drm/drm_file.h>
 
@@ -31,7 +33,7 @@
 static void virtio_gpu_add_bool(struct seq_file *m, const char *name,
 				bool value)
 {
-	seq_printf(m, "%-16s : %s\n", name, value ? "yes" : "no");
+	seq_printf(m, "%-16s : %s\n", name, str_yes_no(value));
 }
 
 static void virtio_gpu_add_int(struct seq_file *m, const char *name, int value)
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index baef2c5f2aaf..f293e6ad52da 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -124,6 +124,7 @@ static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = {
 	.vmap = drm_gem_shmem_object_vmap,
 	.vunmap = drm_gem_shmem_object_vunmap,
 	.mmap = drm_gem_shmem_object_mmap,
+	.vm_ops = &drm_gem_shmem_vm_ops,
 };
 
 bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index fe36efdb7ff5..26eb5478394a 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -32,9 +32,10 @@
 
 #include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_gem_ttm_helper.h>
 #include <drm/drm_ioctl.h>
+#include <drm/drm_module.h>
 #include <drm/drm_sysfs.h>
-#include <drm/drm_gem_ttm_helper.h>
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_range_manager.h>
 #include <drm/ttm/ttm_placement.h>
@@ -1643,26 +1644,7 @@ out_error:
 	return ret;
 }
 
-static int __init vmwgfx_init(void)
-{
-	int ret;
-
-	if (drm_firmware_drivers_only())
-		return -EINVAL;
-
-	ret = pci_register_driver(&vmw_pci_driver);
-	if (ret)
-		DRM_ERROR("Failed initializing DRM.\n");
-	return ret;
-}
-
-static void __exit vmwgfx_exit(void)
-{
-	pci_unregister_driver(&vmw_pci_driver);
-}
-
-module_init(vmwgfx_init);
-module_exit(vmwgfx_exit);
+drm_module_pci_driver(vmw_pci_driver);
 
 MODULE_AUTHOR("VMware Inc. and others");
 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index dd2ff441068e..d49de4905efa 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -4501,7 +4501,7 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
 			goto mksstats_out;
 		}
 
-		ret = vmw_wait_dma_fence(dev_priv->fman, in_fence);
+		ret = dma_fence_wait(in_fence, true);
 		if (ret)
 			goto out;
 	}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
index 5001b87aebe8..59d6a2dd4c2e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
@@ -621,52 +621,6 @@ out_no_object:
 	return ret;
 }
 
-
-/**
- * vmw_wait_dma_fence - Wait for a dma fence
- *
- * @fman: pointer to a fence manager
- * @fence: DMA fence to wait on
- *
- * This function handles the case when the fence is actually a fence
- * array.  If that's the case, it'll wait on each of the child fence
- */
-int vmw_wait_dma_fence(struct vmw_fence_manager *fman,
-		       struct dma_fence *fence)
-{
-	struct dma_fence_array *fence_array;
-	int ret = 0;
-	int i;
-
-
-	if (dma_fence_is_signaled(fence))
-		return 0;
-
-	if (!dma_fence_is_array(fence))
-		return dma_fence_wait(fence, true);
-
-	/* From i915: Note that if the fence-array was created in
-	 * signal-on-any mode, we should *not* decompose it into its individual
-	 * fences. However, we don't currently store which mode the fence-array
-	 * is operating in. Fortunately, the only user of signal-on-any is
-	 * private to amdgpu and we should not see any incoming fence-array
-	 * from sync-file being in signal-on-any mode.
-	 */
-
-	fence_array = to_dma_fence_array(fence);
-	for (i = 0; i < fence_array->num_fences; i++) {
-		struct dma_fence *child = fence_array->fences[i];
-
-		ret = dma_fence_wait(child, true);
-
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-
 /*
  * vmw_fence_fifo_down - signal all unsignaled fence objects.
  */
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h
index 079ab4f3ba51..a7eee579c76a 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.h
@@ -104,9 +104,6 @@ extern int vmw_user_fence_create(struct drm_file *file_priv,
 				 struct vmw_fence_obj **p_fence,
 				 uint32_t *p_handle);
 
-extern int vmw_wait_dma_fence(struct vmw_fence_manager *fman,
-			      struct dma_fence *fence);
-
 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
 
 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
diff --git a/drivers/gpu/drm/xen/xen_drm_front.c b/drivers/gpu/drm/xen/xen_drm_front.c
index e63088c2121d..0d8e6bd1ccbf 100644
--- a/drivers/gpu/drm/xen/xen_drm_front.c
+++ b/drivers/gpu/drm/xen/xen_drm_front.c
@@ -495,6 +495,9 @@ static int xen_drm_drv_init(struct xen_drm_front_info *front_info)
 	struct drm_device *drm_dev;
 	int ret;
 
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
 	DRM_INFO("Creating %s\n", xen_drm_driver.desc);
 
 	drm_info = kzalloc(sizeof(*drm_info), GFP_KERNEL);
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
index ac37053412a1..824b510e337b 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
@@ -25,6 +25,7 @@
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_mode_config.h>
+#include <drm/drm_module.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
 
@@ -286,7 +287,7 @@ static struct platform_driver zynqmp_dpsub_driver = {
 	},
 };
 
-module_platform_driver(zynqmp_dpsub_driver);
+drm_module_platform_driver(zynqmp_dpsub_driver);
 
 MODULE_AUTHOR("Xilinx, Inc.");
 MODULE_DESCRIPTION("ZynqMP DP Subsystem Driver");
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index f2684d2d6851..4a35347b3020 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -654,6 +654,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 	fbops->fb_blank     =      fbtft_fb_blank;
 
 	fbdefio->delay =           HZ / fps;
+	fbdefio->sort_pagelist =   true;
 	fbdefio->deferred_io =     fbtft_deferred_io;
 	fb_deferred_io_init(info);
 
diff --git a/drivers/video/fbdev/broadsheetfb.c b/drivers/video/fbdev/broadsheetfb.c
index fd66f4d4a621..b9054f658838 100644
--- a/drivers/video/fbdev/broadsheetfb.c
+++ b/drivers/video/fbdev/broadsheetfb.c
@@ -1059,6 +1059,7 @@ static const struct fb_ops broadsheetfb_ops = {
 
 static struct fb_deferred_io broadsheetfb_defio = {
 	.delay		= HZ/4,
+	.sort_pagelist	= true,
 	.deferred_io	= broadsheetfb_dpy_deferred_io,
 };
 
diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c
index a591d291b231..98b0f23bf5e2 100644
--- a/drivers/video/fbdev/core/fb_defio.c
+++ b/drivers/video/fbdev/core/fb_defio.c
@@ -59,6 +59,7 @@ static vm_fault_t fb_deferred_io_fault(struct vm_fault *vmf)
 		printk(KERN_ERR "no mapping available\n");
 
 	BUG_ON(!page->mapping);
+	INIT_LIST_HEAD(&page->lru);
 	page->index = vmf->pgoff;
 
 	vmf->page = page;
@@ -95,7 +96,7 @@ static vm_fault_t fb_deferred_io_mkwrite(struct vm_fault *vmf)
 	struct page *page = vmf->page;
 	struct fb_info *info = vmf->vma->vm_private_data;
 	struct fb_deferred_io *fbdefio = info->fbdefio;
-	struct page *cur;
+	struct list_head *pos = &fbdefio->pagelist;
 
 	/* this is a callback we get when userspace first tries to
 	write to the page. we schedule a workqueue. that workqueue
@@ -122,21 +123,38 @@ static vm_fault_t fb_deferred_io_mkwrite(struct vm_fault *vmf)
 	 */
 	lock_page(page);
 
-	/* we loop through the pagelist before adding in order
-	to keep the pagelist sorted */
-	list_for_each_entry(cur, &fbdefio->pagelist, lru) {
-		/* this check is to catch the case where a new
-		process could start writing to the same page
-		through a new pte. this new access can cause the
-		mkwrite even when the original ps's pte is marked
-		writable */
-		if (unlikely(cur == page))
-			goto page_already_added;
-		else if (cur->index > page->index)
-			break;
+	/*
+	 * This check is to catch the case where a new process could start
+	 * writing to the same page through a new PTE. This new access
+	 * can cause a call to .page_mkwrite even if the original process'
+	 * PTE is marked writable.
+	 *
+	 * TODO: The lru field is owned by the page cache; hence the name.
+	 *       We dequeue in fb_deferred_io_work() after flushing the
+	 *       page's content into video memory. Instead of lru, fbdefio
+	 *       should have it's own field.
+	 */
+	if (!list_empty(&page->lru))
+		goto page_already_added;
+
+	if (unlikely(fbdefio->sort_pagelist)) {
+		/*
+		 * We loop through the pagelist before adding in order to
+		 * keep the pagelist sorted. This has significant overhead
+		 * of O(n^2) with n being the number of written pages. If
+		 * possible, drivers should try to work with unsorted page
+		 * lists instead.
+		 */
+		struct page *cur;
+
+		list_for_each_entry(cur, &fbdefio->pagelist, lru) {
+			if (cur->index > page->index)
+				break;
+		}
+		pos = &cur->lru;
 	}
 
-	list_add_tail(&page->lru, &cur->lru);
+	list_add_tail(&page->lru, pos);
 
 page_already_added:
 	mutex_unlock(&fbdefio->lock);
@@ -194,7 +212,7 @@ static void fb_deferred_io_work(struct work_struct *work)
 
 	/* clear the list */
 	list_for_each_safe(node, next, &fbdefio->pagelist) {
-		list_del(node);
+		list_del_init(node);
 	}
 	mutex_unlock(&fbdefio->lock);
 }
diff --git a/drivers/video/fbdev/metronomefb.c b/drivers/video/fbdev/metronomefb.c
index 952826557a0c..af858dd23ea6 100644
--- a/drivers/video/fbdev/metronomefb.c
+++ b/drivers/video/fbdev/metronomefb.c
@@ -568,6 +568,7 @@ static const struct fb_ops metronomefb_ops = {
 
 static struct fb_deferred_io metronomefb_defio = {
 	.delay		= HZ,
+	.sort_pagelist	= true,
 	.deferred_io	= metronomefb_dpy_deferred_io,
 };
 
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index b9cdd02c1000..184bb8433b78 100644
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -980,6 +980,7 @@ static int dlfb_ops_open(struct fb_info *info, int user)
 
 		if (fbdefio) {
 			fbdefio->delay = DL_DEFIO_WRITE_DELAY;
+			fbdefio->sort_pagelist = true;
 			fbdefio->deferred_io = dlfb_dpy_deferred_io;
 		}