Merge tag 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "New xilinx displayport driver, AMD support for two new GPUs (more
  header files), i915 initial support for RocketLake and some work on
  their DG1 (discrete chip).

  The core also grew some lockdep annotations to try and constrain what
  drivers do with dma-fences, and added some documentation on why the
  idea of indefinite fences doesn't work.

  The long list is below.

  I do have some fixes trees outstanding, but I'll follow up with those
  later.

  core:
   - add user def flag to cmd line modes
   - dma_fence_wait added might_sleep
   - dma-fence lockdep annotations
   - indefinite fences are bad documentation
   - gem CMA functions used in more drivers
   - struct mutex removal
   - more drm_ debug macro usage
   - set/drop master api fixes
   - fix for drm/mm hole size comparison
   - drm/mm remove invalid entry optimization
   - optimise drm/mm hole handling
   - VRR debugfs added
   - uncompressed AFBC modifier support
   - multiple display id blocks in EDID
   - multiple driver sg handling fixes
   - __drm_atomic_helper_crtc_reset in all drivers
   - managed vram helpers

  ttm:
   - ttm_mem_reg handling cleanup
   - remove bo offset field
   - drop CMA memtype flag
   - drop mappable flag

  xilinx:
   - New Xilinx ZynqMP DisplayPort Subsystem driver

  nouveau:
   - add CRC support
   - start using NVIDIA published class header files
   - convert all push buffer emission to new macros
   - Proper push buffer space management for EVO/NVD channels.
   - firmware loading fixes
   - 2MiB system memory pages support on Pascal and newer

  vkms:
   - larger cursor support

  i915:
   - Rocketlake platform enablement
   - Early DG1 enablement
   - Numerous GEM refactorings
   - DP MST fixes
   - FBC, PSR, Cursor, Color, Gamma fixes
   - TGL, RKL, EHL workaround updates
   - TGL 8K display support fixes
   - SDVO/HDMI/DVI fixes

  amdgpu:
   - Initial support for Sienna Cichlid GPU
   - Initial support for Navy Flounder GPU
   - SI UVD/VCE support
   - expose rotation property
   - Add support for unique id on Arcturus
   - Enable runtime PM on vega10 boards that support BACO
   - Skip BAR resizing if the bios already did id
   - Major swSMU code cleanup
   - Fixes for DCN bandwidth calculations

  amdkfd:
   - Track SDMA usage per process
   - SMI events interface

  radeon:
   - Default to on chip GART for AGP boards on all arches
   - Runtime PM reference count fixes

  msm:
   - headers regenerated causing churn
   - a650/a640 display and GPU enablement
   - dpu dither support for 6bpc panels
   - dpu cursor fix
   - dsi/mdp5 enablement for sdm630/sdm636/sdm66

  tegra:
   - video capture prep support
   - reflection support

  mediatek:
   - convert mtk_dsi to bridge API

  meson:
   - FBC support

  sun4i:
   - iommu support

  rockchip:
   - register locking fix
   - per-pixel alpha support PX30 VOP

  mgag200:
   - ported to simple and shmem helpers
   - device init cleanups
   - use managed pci functions
   - dropped hw cursor support

  ast:
   - use managed pci functions
   - use managed VRAM helpers
   - rework cursor support

  malidp:
   - dev_groups support

  hibmc:
   - refactor hibmc_drv_vdac:

  vc4:
   - create TXP CRTC

  imx:
   - error path fixes and cleanups

  etnaviv:
   - clock handling and error handling cleanups
   - use pin_user_pages"

* tag 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drm: (1747 commits)
  drm/msm: use kthread_create_worker instead of kthread_run
  drm/msm/mdp5: Add MDP5 configuration for SDM636/660
  drm/msm/dsi: Add DSI configuration for SDM660
  drm/msm/mdp5: Add MDP5 configuration for SDM630
  drm/msm/dsi: Add phy configuration for SDM630/636/660
  drm/msm/a6xx: add A640/A650 hwcg
  drm/msm/a6xx: hwcg tables in gpulist
  drm/msm/dpu: add SM8250 to hw catalog
  drm/msm/dpu: add SM8150 to hw catalog
  drm/msm/dpu: intf timing path for displayport
  drm/msm/dpu: set missing flush bits for INTF_2 and INTF_3
  drm/msm/dpu: don't use INTF_INPUT_CTRL feature on sdm845
  drm/msm/dpu: move some sspp caps to dpu_caps
  drm/msm/dpu: update UBWC config for sm8150 and sm8250
  drm/msm/dpu: use right setup_blend_config for sm8150 and sm8250
  drm/msm/a6xx: set ubwc config for A640 and A650
  drm/msm/adreno: un-open-code some packets
  drm/msm: sync generated headers
  drm/msm/a6xx: add build_bw_table for A640/A650
  drm/msm/a6xx: fix crashstate capture for A650
  ...

1 files changed, 20 insertions, 21 deletions

diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 0b375069cd48..337a48321705 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -143,7 +143,7 @@ struct drm_gem_object_funcs {
 	/**
 	 * @vunmap:
 	 *
-	 * Releases the the address previously returned by @vmap. Used by the
+	 * Releases the address previously returned by @vmap. Used by the
 	 * drm_gem_dmabuf_vunmap() helper.
 	 *
 	 * This callback is optional.
@@ -157,7 +157,7 @@ struct drm_gem_object_funcs {
 	 *
 	 * This callback is optional.
 	 *
-	 * The callback is used by by both drm_gem_mmap_obj() and
+	 * The callback is used by both drm_gem_mmap_obj() and
 	 * drm_gem_prime_mmap().  When @mmap is present @vm_ops is not
 	 * used, the @mmap callback must set vma->vm_ops instead.
 	 */
@@ -187,8 +187,8 @@ struct drm_gem_object {
 	 *
 	 * Reference count of this object
 	 *
-	 * Please use drm_gem_object_get() to acquire and drm_gem_object_put()
-	 * or drm_gem_object_put_unlocked() to release a reference to a GEM
+	 * Please use drm_gem_object_get() to acquire and drm_gem_object_put_locked()
+	 * or drm_gem_object_put() to release a reference to a GEM
 	 * buffer object.
 	 */
 	struct kref refcount;
@@ -272,8 +272,9 @@ struct drm_gem_object {
 	 * attachment point for the device. This is invariant over the lifetime
 	 * of a gem object.
 	 *
-	 * The &drm_driver.gem_free_object callback is responsible for cleaning
-	 * up the dma_buf attachment and references acquired at import time.
+	 * The &drm_driver.gem_free_object_unlocked callback is responsible for
+	 * cleaning up the dma_buf attachment and references acquired at import
+	 * time.
 	 *
 	 * Note that the drm gem/prime core does not depend upon drivers setting
 	 * this field any more. So for drivers where this doesn't make sense
@@ -362,29 +363,27 @@ static inline void drm_gem_object_get(struct drm_gem_object *obj)
 	kref_get(&obj->refcount);
 }
 
+__attribute__((nonnull))
+static inline void
+__drm_gem_object_put(struct drm_gem_object *obj)
+{
+	kref_put(&obj->refcount, drm_gem_object_free);
+}
+
 /**
- * __drm_gem_object_put - raw function to release a GEM buffer object reference
+ * drm_gem_object_put - drop a GEM buffer object reference
  * @obj: GEM buffer object
  *
- * This function is meant to be used by drivers which are not encumbered with
- * &drm_device.struct_mutex legacy locking and which are using the
- * gem_free_object_unlocked callback. It avoids all the locking checks and
- * locking overhead of drm_gem_object_put() and drm_gem_object_put_unlocked().
- *
- * Drivers should never call this directly in their code. Instead they should
- * wrap it up into a ``driver_gem_object_put(struct driver_gem_object *obj)``
- * wrapper function, and use that. Shared code should never call this, to
- * avoid breaking drivers by accident which still depend upon
- * &drm_device.struct_mutex locking.
+ * This releases a reference to @obj.
  */
 static inline void
-__drm_gem_object_put(struct drm_gem_object *obj)
+drm_gem_object_put(struct drm_gem_object *obj)
 {
-	kref_put(&obj->refcount, drm_gem_object_free);
+	if (obj)
+		__drm_gem_object_put(obj);
 }
 
-void drm_gem_object_put_unlocked(struct drm_gem_object *obj);
-void drm_gem_object_put(struct drm_gem_object *obj);
+void drm_gem_object_put_locked(struct drm_gem_object *obj);
 
 int drm_gem_handle_create(struct drm_file *file_priv,
 			  struct drm_gem_object *obj,