From 34ea3d386347cd6de4c2fa2491dd85c9e753e7e4 Mon Sep 17 00:00:00 2001 From: Thomas Wood Date: Thu, 29 May 2014 16:57:41 +0100 Subject: drm: add register and unregister functions for connectors Introduce generic functions to register and unregister connectors. This provides a common place to add and remove associated user space interfaces. Signed-off-by: Thomas Wood Reviewed-by: David Herrmann Signed-off-by: Daniel Vetter --- drivers/gpu/drm/tegra/output.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index a3e4f1eca6f7..446837e955b6 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -105,7 +105,7 @@ static void drm_connector_clear(struct drm_connector *connector) static void tegra_connector_destroy(struct drm_connector *connector) { - drm_sysfs_connector_remove(connector); + drm_connector_unregister(connector); drm_connector_cleanup(connector); drm_connector_clear(connector); } @@ -318,7 +318,7 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output) drm_encoder_helper_add(&output->encoder, &encoder_helper_funcs); drm_mode_connector_attach_encoder(&output->connector, &output->encoder); - drm_sysfs_connector_add(&output->connector); + drm_connector_register(&output->connector); output->encoder.possible_crtcs = 0x3; -- cgit v1.2.3 From 3a4938799dec32783759b0c66ee3bb8c82dd9937 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 27 Jun 2014 17:19:23 +0200 Subject: drm: Constify struct drm_fb_helper_funcs There's no need for this to be modifiable. Make it const so that it can be put into the .rodata section. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding Acked-by: Russell King Signed-off-by: Dave Airlie --- drivers/gpu/drm/armada/armada_fbdev.c | 2 +- drivers/gpu/drm/ast/ast_fb.c | 2 +- drivers/gpu/drm/bochs/bochs_fbdev.c | 2 +- drivers/gpu/drm/cirrus/cirrus_fbdev.c | 2 +- drivers/gpu/drm/drm_fb_cma_helper.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 +- drivers/gpu/drm/gma500/framebuffer.c | 2 +- drivers/gpu/drm/i915/intel_fbdev.c | 2 +- drivers/gpu/drm/mgag200/mgag200_fb.c | 2 +- drivers/gpu/drm/msm/msm_fbdev.c | 2 +- drivers/gpu/drm/nouveau/nouveau_fbcon.c | 2 +- drivers/gpu/drm/omapdrm/omap_fbdev.c | 2 +- drivers/gpu/drm/qxl/qxl_fb.c | 2 +- drivers/gpu/drm/radeon/radeon_fb.c | 2 +- drivers/gpu/drm/tegra/fb.c | 2 +- drivers/gpu/drm/udl/udl_fb.c | 2 +- include/drm/drm_fb_helper.h | 2 +- 17 files changed, 17 insertions(+), 17 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index fd166f532ab9..a7c947cd9386 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -131,7 +131,7 @@ static int armada_fb_probe(struct drm_fb_helper *fbh, return ret; } -static struct drm_fb_helper_funcs armada_fb_helper_funcs = { +static const struct drm_fb_helper_funcs armada_fb_helper_funcs = { .gamma_set = armada_drm_crtc_gamma_set, .gamma_get = armada_drm_crtc_gamma_get, .fb_probe = armada_fb_probe, diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c index a28640f47c27..2113894e4ff8 100644 --- a/drivers/gpu/drm/ast/ast_fb.c +++ b/drivers/gpu/drm/ast/ast_fb.c @@ -287,7 +287,7 @@ static void ast_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, *blue = ast_crtc->lut_b[regno] << 8; } -static struct drm_fb_helper_funcs ast_fb_helper_funcs = { +static const struct drm_fb_helper_funcs ast_fb_helper_funcs = { .gamma_set = ast_fb_gamma_set, .gamma_get = ast_fb_gamma_get, .fb_probe = astfb_create, diff --git a/drivers/gpu/drm/bochs/bochs_fbdev.c b/drivers/gpu/drm/bochs/bochs_fbdev.c index 561b84474122..17e5c17f2730 100644 --- a/drivers/gpu/drm/bochs/bochs_fbdev.c +++ b/drivers/gpu/drm/bochs/bochs_fbdev.c @@ -179,7 +179,7 @@ void bochs_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, *blue = regno; } -static struct drm_fb_helper_funcs bochs_fb_helper_funcs = { +static const struct drm_fb_helper_funcs bochs_fb_helper_funcs = { .gamma_set = bochs_fb_gamma_set, .gamma_get = bochs_fb_gamma_get, .fb_probe = bochsfb_create, diff --git a/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/drivers/gpu/drm/cirrus/cirrus_fbdev.c index 32bbba0a787b..2bd0291168e4 100644 --- a/drivers/gpu/drm/cirrus/cirrus_fbdev.c +++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c @@ -288,7 +288,7 @@ static int cirrus_fbdev_destroy(struct drm_device *dev, return 0; } -static struct drm_fb_helper_funcs cirrus_fb_helper_funcs = { +static const struct drm_fb_helper_funcs cirrus_fb_helper_funcs = { .gamma_set = cirrus_crtc_fb_gamma_set, .gamma_get = cirrus_crtc_fb_gamma_get, .fb_probe = cirrusfb_create, diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index f27c883be391..cb01e1606384 100644 --- a/drivers/gpu/drm/drm_fb_cma_helper.c +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -327,7 +327,7 @@ err_drm_gem_cma_free_object: return ret; } -static struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = { +static const struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = { .fb_probe = drm_fbdev_cma_create, }; diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index d771b467cf0c..fc25fe75aa77 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -225,7 +225,7 @@ out: return ret; } -static struct drm_fb_helper_funcs exynos_drm_fb_helper_funcs = { +static const struct drm_fb_helper_funcs exynos_drm_fb_helper_funcs = { .fb_probe = exynos_drm_fbdev_create, }; diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c index e7fcc148f333..76e4d777d01d 100644 --- a/drivers/gpu/drm/gma500/framebuffer.c +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -561,7 +561,7 @@ static int psbfb_probe(struct drm_fb_helper *helper, return psbfb_create(psb_fbdev, sizes); } -static struct drm_fb_helper_funcs psb_fb_helper_funcs = { +static const struct drm_fb_helper_funcs psb_fb_helper_funcs = { .gamma_set = psbfb_gamma_set, .gamma_get = psbfb_gamma_get, .fb_probe = psbfb_probe, diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index 088fe9378a4c..c942d13cd5cb 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -452,7 +452,7 @@ out: return true; } -static struct drm_fb_helper_funcs intel_fb_helper_funcs = { +static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { .initial_config = intel_fb_initial_config, .gamma_set = intel_crtc_fb_gamma_set, .gamma_get = intel_crtc_fb_gamma_get, diff --git a/drivers/gpu/drm/mgag200/mgag200_fb.c b/drivers/gpu/drm/mgag200/mgag200_fb.c index 13b7dd83faa9..a4319aba9180 100644 --- a/drivers/gpu/drm/mgag200/mgag200_fb.c +++ b/drivers/gpu/drm/mgag200/mgag200_fb.c @@ -272,7 +272,7 @@ static int mga_fbdev_destroy(struct drm_device *dev, return 0; } -static struct drm_fb_helper_funcs mga_fb_helper_funcs = { +static const struct drm_fb_helper_funcs mga_fb_helper_funcs = { .gamma_set = mga_crtc_fb_gamma_set, .gamma_get = mga_crtc_fb_gamma_get, .fb_probe = mgag200fb_create, diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 5107fc4826bc..7e706c4cf033 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -177,7 +177,7 @@ static void msm_crtc_fb_gamma_get(struct drm_crtc *crtc, DBG("fbdev: get gamma"); } -static struct drm_fb_helper_funcs msm_fb_helper_funcs = { +static const struct drm_fb_helper_funcs msm_fb_helper_funcs = { .gamma_set = msm_crtc_fb_gamma_set, .gamma_get = msm_crtc_fb_gamma_get, .fb_probe = msm_fbdev_create, diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index 64a42cfd3717..8e9c07b7fc89 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -438,7 +438,7 @@ void nouveau_fbcon_gpu_lockup(struct fb_info *info) info->flags |= FBINFO_HWACCEL_DISABLED; } -static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = { +static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = { .gamma_set = nouveau_fbcon_gamma_set, .gamma_get = nouveau_fbcon_gamma_get, .fb_probe = nouveau_fbcon_create, diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 1388ca7f87e8..4cb12083eb12 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -281,7 +281,7 @@ fail: return ret; } -static struct drm_fb_helper_funcs omap_fb_helper_funcs = { +static const struct drm_fb_helper_funcs omap_fb_helper_funcs = { .fb_probe = omap_fbdev_create, }; diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c index f437b30ce689..cf89614c72be 100644 --- a/drivers/gpu/drm/qxl/qxl_fb.c +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -660,7 +660,7 @@ static int qxl_fbdev_destroy(struct drm_device *dev, struct qxl_fbdev *qfbdev) return 0; } -static struct drm_fb_helper_funcs qxl_fb_helper_funcs = { +static const struct drm_fb_helper_funcs qxl_fb_helper_funcs = { .fb_probe = qxl_fb_find_or_create_single, }; diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index 665ced3b7313..ad97afdbc4c7 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -331,7 +331,7 @@ static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfb return 0; } -static struct drm_fb_helper_funcs radeon_fb_helper_funcs = { +static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { .gamma_set = radeon_crtc_fb_gamma_set, .gamma_get = radeon_crtc_fb_gamma_get, .fb_probe = radeonfb_create, diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index 9798a7080322..f7cf47bf0afb 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -267,7 +267,7 @@ release: return err; } -static struct drm_fb_helper_funcs tegra_fb_helper_funcs = { +static const struct drm_fb_helper_funcs tegra_fb_helper_funcs = { .fb_probe = tegra_fbdev_probe, }; diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index 377176372da8..0647c8cc368b 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -550,7 +550,7 @@ out: return ret; } -static struct drm_fb_helper_funcs udl_fb_helper_funcs = { +static const struct drm_fb_helper_funcs udl_fb_helper_funcs = { .fb_probe = udlfb_create, }; diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 7997246d4039..a47df7ca38e8 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -87,7 +87,7 @@ struct drm_fb_helper { struct drm_fb_helper_crtc *crtc_info; int connector_count; struct drm_fb_helper_connector **connector_info; - struct drm_fb_helper_funcs *funcs; + const struct drm_fb_helper_funcs *funcs; struct fb_info *fbdev; u32 pseudo_palette[17]; struct list_head kernel_fb_list; -- cgit v1.2.3 From 10a231026574f9ec9761b6435394b8830b485e4e Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 27 Jun 2014 17:19:24 +0200 Subject: drm: Introduce drm_fb_helper_prepare() To implement hotplug detection in a race-free manner, drivers must call drm_kms_helper_poll_init() before hotplug events can be triggered. Such events can be triggered right after any of the encoders or connectors are initialized. At the same time, if the drm_fb_helper_hotplug_event() helper is used by a driver, then the poll helper requires some parts of the FB helper to be initialized to prevent a crash. At the same time, drm_fb_helper_init() requires information that is not necessarily available at such an early stage (number of CRTCs and connectors), so it cannot be used yet. Add a new helper, drm_fb_helper_prepare(), that initializes the bare minimum needed to allow drm_kms_helper_poll_init() to execute and any subsequent hotplug events to be processed properly. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding Signed-off-by: Dave Airlie --- drivers/gpu/drm/armada/armada_fbdev.c | 2 +- drivers/gpu/drm/ast/ast_fb.c | 4 ++- drivers/gpu/drm/bochs/bochs_fbdev.c | 3 +- drivers/gpu/drm/cirrus/cirrus_fbdev.c | 4 ++- drivers/gpu/drm/drm_fb_cma_helper.c | 3 +- drivers/gpu/drm/drm_fb_helper.c | 47 ++++++++++++++++++++++++------- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 3 +- drivers/gpu/drm/gma500/framebuffer.c | 3 +- drivers/gpu/drm/i915/intel_fbdev.c | 3 +- drivers/gpu/drm/mgag200/mgag200_fb.c | 3 +- drivers/gpu/drm/msm/msm_fbdev.c | 2 +- drivers/gpu/drm/nouveau/nouveau_fbcon.c | 3 +- drivers/gpu/drm/omapdrm/omap_fbdev.c | 2 +- drivers/gpu/drm/qxl/qxl_fb.c | 5 +++- drivers/gpu/drm/radeon/radeon_fb.c | 4 ++- drivers/gpu/drm/tegra/fb.c | 4 +-- drivers/gpu/drm/udl/udl_fb.c | 3 +- include/drm/drm_fb_helper.h | 2 ++ 18 files changed, 72 insertions(+), 28 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index a7c947cd9386..7838e731b0de 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -149,7 +149,7 @@ int armada_fbdev_init(struct drm_device *dev) priv->fbdev = fbh; - fbh->funcs = &armada_fb_helper_funcs; + drm_fb_helper_prepare(dev, fbh, &armada_fb_helper_funcs); ret = drm_fb_helper_init(dev, fbh, 1, 1); if (ret) { diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c index 2113894e4ff8..cba45c774552 100644 --- a/drivers/gpu/drm/ast/ast_fb.c +++ b/drivers/gpu/drm/ast/ast_fb.c @@ -328,8 +328,10 @@ int ast_fbdev_init(struct drm_device *dev) return -ENOMEM; ast->fbdev = afbdev; - afbdev->helper.funcs = &ast_fb_helper_funcs; spin_lock_init(&afbdev->dirty_lock); + + drm_fb_helper_prepare(dev, &afbdev->helper, &ast_fb_helper_funcs); + ret = drm_fb_helper_init(dev, &afbdev->helper, 1, 1); if (ret) { diff --git a/drivers/gpu/drm/bochs/bochs_fbdev.c b/drivers/gpu/drm/bochs/bochs_fbdev.c index 17e5c17f2730..19cf3e9413b6 100644 --- a/drivers/gpu/drm/bochs/bochs_fbdev.c +++ b/drivers/gpu/drm/bochs/bochs_fbdev.c @@ -189,7 +189,8 @@ int bochs_fbdev_init(struct bochs_device *bochs) { int ret; - bochs->fb.helper.funcs = &bochs_fb_helper_funcs; + drm_fb_helper_prepare(bochs->dev, &bochs->fb.helper, + &bochs_fb_helper_funcs); ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper, 1, 1); diff --git a/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/drivers/gpu/drm/cirrus/cirrus_fbdev.c index 2bd0291168e4..2a135f253e29 100644 --- a/drivers/gpu/drm/cirrus/cirrus_fbdev.c +++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c @@ -306,9 +306,11 @@ int cirrus_fbdev_init(struct cirrus_device *cdev) return -ENOMEM; cdev->mode_info.gfbdev = gfbdev; - gfbdev->helper.funcs = &cirrus_fb_helper_funcs; spin_lock_init(&gfbdev->dirty_lock); + drm_fb_helper_prepare(cdev->dev, &gfbdev->helper, + &cirrus_fb_helper_funcs); + ret = drm_fb_helper_init(cdev->dev, &gfbdev->helper, cdev->num_crtc, CIRRUSFB_CONN_LIMIT); if (ret) { diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index cb01e1606384..cc0ae047ed3b 100644 --- a/drivers/gpu/drm/drm_fb_cma_helper.c +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -354,9 +354,10 @@ struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev, return ERR_PTR(-ENOMEM); } - fbdev_cma->fb_helper.funcs = &drm_fb_cma_helper_funcs; helper = &fbdev_cma->fb_helper; + drm_fb_helper_prepare(dev, helper, &drm_fb_cma_helper_funcs); + ret = drm_fb_helper_init(dev, helper, num_crtc, max_conn_count); if (ret < 0) { dev_err(dev->dev, "Failed to initialize drm fb helper.\n"); diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 6cd687a20cd5..bdee6eb0b24a 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -49,10 +49,11 @@ static LIST_HEAD(kernel_fb_helper_list); * helper functions used by many drivers to implement the kernel mode setting * interfaces. * - * Initialization is done as a three-step process with drm_fb_helper_init(), - * drm_fb_helper_single_add_all_connectors() and drm_fb_helper_initial_config(). - * Drivers with fancier requirements than the default behaviour can override the - * second step with their own code. Teardown is done with drm_fb_helper_fini(). + * Initialization is done as a four-step process with drm_fb_helper_prepare(), + * drm_fb_helper_init(), drm_fb_helper_single_add_all_connectors() and + * drm_fb_helper_initial_config(). Drivers with fancier requirements than the + * default behaviour can override the third step with their own code. + * Teardown is done with drm_fb_helper_fini(). * * At runtime drivers should restore the fbdev console by calling * drm_fb_helper_restore_fbdev_mode() from their ->lastclose callback. They @@ -63,6 +64,19 @@ static LIST_HEAD(kernel_fb_helper_list); * * All other functions exported by the fb helper library can be used to * implement the fbdev driver interface by the driver. + * + * It is possible, though perhaps somewhat tricky, to implement race-free + * hotplug detection using the fbdev helpers. The drm_fb_helper_prepare() + * helper must be called first to initialize the minimum required to make + * hotplug detection work. Drivers also need to make sure to properly set up + * the dev->mode_config.funcs member. After calling drm_kms_helper_poll_init() + * it is safe to enable interrupts and start processing hotplug events. At the + * same time, drivers should initialize all modeset objects such as CRTCs, + * encoders and connectors. To finish up the fbdev helper initialization, the + * drm_fb_helper_init() function is called. To probe for all attached displays + * and set up an initial configuration using the detected hardware, drivers + * should call drm_fb_helper_single_add_all_connectors() followed by + * drm_fb_helper_initial_config(). */ /** @@ -527,6 +541,24 @@ static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) kfree(helper->crtc_info); } +/** + * drm_fb_helper_prepare - setup a drm_fb_helper structure + * @dev: DRM device + * @helper: driver-allocated fbdev helper structure to set up + * @funcs: pointer to structure of functions associate with this helper + * + * Sets up the bare minimum to make the framebuffer helper usable. This is + * useful to implement race-free initialization of the polling helpers. + */ +void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, + const struct drm_fb_helper_funcs *funcs) +{ + INIT_LIST_HEAD(&helper->kernel_fb_list); + helper->funcs = funcs; + helper->dev = dev; +} +EXPORT_SYMBOL(drm_fb_helper_prepare); + /** * drm_fb_helper_init - initialize a drm_fb_helper structure * @dev: drm device @@ -539,8 +571,7 @@ static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) * nor register the fbdev. This is only done in drm_fb_helper_initial_config() * to allow driver writes more control over the exact init sequence. * - * Drivers must set fb_helper->funcs before calling - * drm_fb_helper_initial_config(). + * Drivers must call drm_fb_helper_prepare() before calling this function. * * RETURNS: * Zero if everything went ok, nonzero otherwise. @@ -555,10 +586,6 @@ int drm_fb_helper_init(struct drm_device *dev, if (!max_conn_count) return -EINVAL; - fb_helper->dev = dev; - - INIT_LIST_HEAD(&fb_helper->kernel_fb_list); - fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); if (!fb_helper->crtc_info) return -ENOMEM; diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index fc25fe75aa77..32e63f60e1d1 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -266,7 +266,8 @@ int exynos_drm_fbdev_init(struct drm_device *dev) return -ENOMEM; private->fb_helper = helper = &fbdev->drm_fb_helper; - helper->funcs = &exynos_drm_fb_helper_funcs; + + drm_fb_helper_prepare(dev, helper, &exynos_drm_fb_helper_funcs); num_crtc = dev->mode_config.num_crtc; diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c index 76e4d777d01d..d0dd3bea8aa5 100644 --- a/drivers/gpu/drm/gma500/framebuffer.c +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -600,7 +600,8 @@ int psb_fbdev_init(struct drm_device *dev) } dev_priv->fbdev = fbdev; - fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; + + drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs); drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, INTELFB_CONN_LIMIT); diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index c942d13cd5cb..347d16220cd0 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -623,7 +623,8 @@ int intel_fbdev_init(struct drm_device *dev) if (ifbdev == NULL) return -ENOMEM; - ifbdev->helper.funcs = &intel_fb_helper_funcs; + drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); + if (!intel_fbdev_init_bios(dev, ifbdev)) ifbdev->preferred_bpp = 32; diff --git a/drivers/gpu/drm/mgag200/mgag200_fb.c b/drivers/gpu/drm/mgag200/mgag200_fb.c index a4319aba9180..5451dc58eff1 100644 --- a/drivers/gpu/drm/mgag200/mgag200_fb.c +++ b/drivers/gpu/drm/mgag200/mgag200_fb.c @@ -293,9 +293,10 @@ int mgag200_fbdev_init(struct mga_device *mdev) return -ENOMEM; mdev->mfbdev = mfbdev; - mfbdev->helper.funcs = &mga_fb_helper_funcs; spin_lock_init(&mfbdev->dirty_lock); + drm_fb_helper_prepare(mdev->dev, &mfbdev->helper, &mga_fb_helper_funcs); + ret = drm_fb_helper_init(mdev->dev, &mfbdev->helper, mdev->num_crtc, MGAG200FB_CONN_LIMIT); if (ret) diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 7e706c4cf033..c437065933e3 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -197,7 +197,7 @@ struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev) helper = &fbdev->base; - helper->funcs = &msm_fb_helper_funcs; + drm_fb_helper_prepare(dev, helper, &msm_fb_helper_funcs); ret = drm_fb_helper_init(dev, helper, priv->num_crtcs, priv->num_connectors); diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index 8e9c07b7fc89..afe706a20f97 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -464,7 +464,8 @@ nouveau_fbcon_init(struct drm_device *dev) fbcon->dev = dev; drm->fbcon = fbcon; - fbcon->helper.funcs = &nouveau_fbcon_helper_funcs; + + drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs); ret = drm_fb_helper_init(dev, &fbcon->helper, dev->mode_config.num_crtc, 4); diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 4cb12083eb12..8436c6857cda 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -325,7 +325,7 @@ struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev) helper = &fbdev->base; - helper->funcs = &omap_fb_helper_funcs; + drm_fb_helper_prepare(dev, helper, &omap_fb_helper_funcs); ret = drm_fb_helper_init(dev, helper, priv->num_crtcs, priv->num_connectors); diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c index cf89614c72be..df567888bb1e 100644 --- a/drivers/gpu/drm/qxl/qxl_fb.c +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -676,9 +676,12 @@ int qxl_fbdev_init(struct qxl_device *qdev) qfbdev->qdev = qdev; qdev->mode_info.qfbdev = qfbdev; - qfbdev->helper.funcs = &qxl_fb_helper_funcs; spin_lock_init(&qfbdev->delayed_ops_lock); INIT_LIST_HEAD(&qfbdev->delayed_ops); + + drm_fb_helper_prepare(qdev->ddev, &qfbdev->helper, + &qxl_fb_helper_funcs); + ret = drm_fb_helper_init(qdev->ddev, &qfbdev->helper, qxl_num_crtc /* num_crtc - QXL supports just 1 */, QXLFB_CONN_LIMIT); diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index ad97afdbc4c7..db598d712901 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -353,7 +353,9 @@ int radeon_fbdev_init(struct radeon_device *rdev) rfbdev->rdev = rdev; rdev->mode_info.rfbdev = rfbdev; - rfbdev->helper.funcs = &radeon_fb_helper_funcs; + + drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, + &radeon_fb_helper_funcs); ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, rdev->num_crtc, diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index f7cf47bf0afb..d5d53aa79ced 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -276,7 +276,6 @@ static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm, unsigned int num_crtc, unsigned int max_connectors) { - struct drm_fb_helper *helper; struct tegra_fbdev *fbdev; int err; @@ -286,8 +285,7 @@ static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm, return ERR_PTR(-ENOMEM); } - fbdev->base.funcs = &tegra_fb_helper_funcs; - helper = &fbdev->base; + drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs); err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors); if (err < 0) { diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index 0647c8cc368b..d1da339843ca 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -583,7 +583,8 @@ int udl_fbdev_init(struct drm_device *dev) return -ENOMEM; udl->fbdev = ufbdev; - ufbdev->helper.funcs = &udl_fb_helper_funcs; + + drm_fb_helper_prepare(dev, &ufbdev->helper, &udl_fb_helper_funcs); ret = drm_fb_helper_init(dev, &ufbdev->helper, 1, 1); diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index a47df7ca38e8..1cf587f1f927 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -97,6 +97,8 @@ struct drm_fb_helper { bool delayed_hotplug; }; +void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, + const struct drm_fb_helper_funcs *funcs); int drm_fb_helper_init(struct drm_device *dev, struct drm_fb_helper *helper, int crtc_count, int max_conn); -- cgit v1.2.3 From e2215321ff180f280d83837f57f3a84f8b6dda0d Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 27 Jun 2014 17:19:25 +0200 Subject: drm/tegra: Implement race-free hotplug detection A race condition currently exists on Tegra, where it can happen that a monitor attached via HDMI isn't detected during the initial FB helper setup, but the hotplug event happens too early to be processed by the poll helpers because they haven't been initialized yet. This happens because on some boards the HDMI driver can control the regulator that supplies the +5V pin on the HDMI connector. Therefore depending on the timing between the initialization of the HDMI driver and the rest of DRM, it's possible that the monitor returns the hotplug signal right within the window where we would miss it. Unfortunately, drm_kms_helper_poll_init() will wreak havoc when called before at least some parts of the FB helpers have been set up. This commit fixes this by splitting out the minimum of initialization required to make drm_kms_helper_poll_init() work into a separate function that can be called early. It is then safe to move all of the poll helper initialization to an earlier point in time (before the HDMI output driver has a chance to enable the +5V supply). That way if the hotplug signal is returned before the initial FB helper setup, the monitor will be forcefully detected at that point, and if the hotplug signal is returned after that it will be properly handled by the poll helpers. Signed-off-by: Thierry Reding Signed-off-by: Dave Airlie --- drivers/gpu/drm/tegra/drm.c | 8 ++++++-- drivers/gpu/drm/tegra/drm.h | 1 + drivers/gpu/drm/tegra/fb.c | 47 ++++++++++++++++++++++++++++++--------------- 3 files changed, 39 insertions(+), 17 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 3396f9f6a9f7..fd736efd14bd 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -40,6 +40,12 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) drm_mode_config_init(drm); + err = tegra_drm_fb_prepare(drm); + if (err < 0) + return err; + + drm_kms_helper_poll_init(drm); + err = host1x_device_init(device); if (err < 0) return err; @@ -59,8 +65,6 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) if (err < 0) return err; - drm_kms_helper_poll_init(drm); - return 0; } diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index 6b8fe9d86ed4..0d30689dff01 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -280,6 +280,7 @@ struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, unsigned int index); bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer); bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer); +int tegra_drm_fb_prepare(struct drm_device *drm); int tegra_drm_fb_init(struct drm_device *drm); void tegra_drm_fb_exit(struct drm_device *drm); #ifdef CONFIG_DRM_TEGRA_FBDEV diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index d5d53aa79ced..fc1528e0bda1 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -271,13 +271,9 @@ static const struct drm_fb_helper_funcs tegra_fb_helper_funcs = { .fb_probe = tegra_fbdev_probe, }; -static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm, - unsigned int preferred_bpp, - unsigned int num_crtc, - unsigned int max_connectors) +static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm) { struct tegra_fbdev *fbdev; - int err; fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); if (!fbdev) { @@ -287,10 +283,21 @@ static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm, drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs); + return fbdev; +} + +static int tegra_fbdev_init(struct tegra_fbdev *fbdev, + unsigned int preferred_bpp, + unsigned int num_crtc, + unsigned int max_connectors) +{ + struct drm_device *drm = fbdev->base.dev; + int err; + err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors); if (err < 0) { dev_err(drm->dev, "failed to initialize DRM FB helper\n"); - goto free; + return err; } err = drm_fb_helper_single_add_all_connectors(&fbdev->base); @@ -299,21 +306,17 @@ static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm, goto fini; } - drm_helper_disable_unused_functions(drm); - err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp); if (err < 0) { dev_err(drm->dev, "failed to set initial configuration\n"); goto fini; } - return fbdev; + return 0; fini: drm_fb_helper_fini(&fbdev->base); -free: - kfree(fbdev); - return ERR_PTR(err); + return err; } static void tegra_fbdev_free(struct tegra_fbdev *fbdev) @@ -364,7 +367,7 @@ static const struct drm_mode_config_funcs tegra_drm_mode_funcs = { #endif }; -int tegra_drm_fb_init(struct drm_device *drm) +int tegra_drm_fb_prepare(struct drm_device *drm) { #ifdef CONFIG_DRM_TEGRA_FBDEV struct tegra_drm *tegra = drm->dev_private; @@ -379,8 +382,7 @@ int tegra_drm_fb_init(struct drm_device *drm) drm->mode_config.funcs = &tegra_drm_mode_funcs; #ifdef CONFIG_DRM_TEGRA_FBDEV - tegra->fbdev = tegra_fbdev_create(drm, 32, drm->mode_config.num_crtc, - drm->mode_config.num_connector); + tegra->fbdev = tegra_fbdev_create(drm); if (IS_ERR(tegra->fbdev)) return PTR_ERR(tegra->fbdev); #endif @@ -388,6 +390,21 @@ int tegra_drm_fb_init(struct drm_device *drm) return 0; } +int tegra_drm_fb_init(struct drm_device *drm) +{ +#ifdef CONFIG_DRM_TEGRA_FBDEV + struct tegra_drm *tegra = drm->dev_private; + int err; + + err = tegra_fbdev_init(tegra->fbdev, 32, drm->mode_config.num_crtc, + drm->mode_config.num_connector); + if (err < 0) + return err; +#endif + + return 0; +} + void tegra_drm_fb_exit(struct drm_device *drm) { #ifdef CONFIG_DRM_TEGRA_FBDEV -- cgit v1.2.3 From 2263c460bed14f36c9a87d97242c35cf1346f61e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 11 Jun 2014 10:06:09 +0300 Subject: drm/tegra: sor - missing unlock on error We should unlock before returning the error code. Signed-off-by: Dan Carpenter Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/sor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 27c979b50111..64f57fa9b8f6 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -516,7 +516,7 @@ static int tegra_output_sor_enable(struct tegra_output *output) if (err < 0) { dev_err(sor->dev, "failed to probe eDP link: %d\n", err); - return err; + goto unlock; } } -- cgit v1.2.3 From 0c6b1e4ba74f58ee1507d456e52c630b4b8ff174 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Tue, 8 Jul 2014 21:32:13 +0900 Subject: drm/tegra: dsi - Handle non-continuous clock flag Handle the MIPI_DSI_CLOCK_NONCONTINUOUS flag and only set TX-only clock behavior when this flag is present to allow panels requiring continuous clock mode to operate with this driver. Signed-off-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index bd56f2affa78..eadfeaf9e1eb 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -474,7 +474,8 @@ static int tegra_output_dsi_enable(struct tegra_output *output) tegra_dsi_writel(dsi, value, DSI_HOST_CONTROL); value = tegra_dsi_readl(dsi, DSI_CONTROL); - value |= DSI_CONTROL_HS_CLK_CTRL; + if (dsi->flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) + value |= DSI_CONTROL_HS_CLK_CTRL; value &= ~DSI_CONTROL_TX_TRIG(3); value &= ~DSI_CONTROL_DCS_ENABLE; value |= DSI_CONTROL_VIDEO_ENABLE; -- cgit v1.2.3 From c134f019abcfaa1cb6e07f6154e92a4f8ce8ddd8 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 3 Jun 2014 14:48:12 +0200 Subject: drm/tegra: Implement more tiling modes Tegra124 supports a block-linear mode in addition to the regular pitch linear and tiled modes. Add support for these by moving the internal representation into a structure rather than a simple flag. Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 102 +++++++++++++++++++++++++++++++++++++------- drivers/gpu/drm/tegra/dc.h | 5 +++ drivers/gpu/drm/tegra/drm.h | 8 +++- drivers/gpu/drm/tegra/fb.c | 9 ++-- drivers/gpu/drm/tegra/gem.c | 2 +- drivers/gpu/drm/tegra/gem.h | 16 ++++++- 6 files changed, 118 insertions(+), 24 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index ef40381f3909..afcca04f5367 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -18,6 +18,7 @@ struct tegra_dc_soc_info { bool supports_interlacing; bool supports_cursor; + bool supports_block_linear; }; struct tegra_plane { @@ -212,15 +213,44 @@ static int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index, tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET); tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET); - if (window->tiled) { - value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV | - DC_WIN_BUFFER_ADDR_MODE_TILE; + if (dc->soc->supports_block_linear) { + unsigned long height = window->tiling.value; + + switch (window->tiling.mode) { + case TEGRA_BO_TILING_MODE_PITCH: + value = DC_WINBUF_SURFACE_KIND_PITCH; + break; + + case TEGRA_BO_TILING_MODE_TILED: + value = DC_WINBUF_SURFACE_KIND_TILED; + break; + + case TEGRA_BO_TILING_MODE_BLOCK: + value = DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(height) | + DC_WINBUF_SURFACE_KIND_BLOCK; + break; + } + + tegra_dc_writel(dc, value, DC_WINBUF_SURFACE_KIND); } else { - value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV | - DC_WIN_BUFFER_ADDR_MODE_LINEAR; - } + switch (window->tiling.mode) { + case TEGRA_BO_TILING_MODE_PITCH: + value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV | + DC_WIN_BUFFER_ADDR_MODE_LINEAR; + break; - tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE); + case TEGRA_BO_TILING_MODE_TILED: + value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV | + DC_WIN_BUFFER_ADDR_MODE_TILE; + break; + + case TEGRA_BO_TILING_MODE_BLOCK: + DRM_ERROR("hardware doesn't support block linear mode\n"); + return -EINVAL; + } + + tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE); + } value = WIN_ENABLE; @@ -288,6 +318,7 @@ static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc, struct tegra_dc *dc = to_tegra_dc(crtc); struct tegra_dc_window window; unsigned int i; + int err; memset(&window, 0, sizeof(window)); window.src.x = src_x >> 16; @@ -301,7 +332,10 @@ static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc, window.format = tegra_dc_format(fb->pixel_format, &window.swap); window.bits_per_pixel = fb->bits_per_pixel; window.bottom_up = tegra_fb_is_bottom_up(fb); - window.tiled = tegra_fb_is_tiled(fb); + + err = tegra_fb_get_tiling(fb, &window.tiling); + if (err < 0) + return err; for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) { struct tegra_bo *bo = tegra_fb_get_plane(fb, i); @@ -402,8 +436,14 @@ static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y, { struct tegra_bo *bo = tegra_fb_get_plane(fb, 0); unsigned int h_offset = 0, v_offset = 0; + struct tegra_bo_tiling tiling; unsigned int format, swap; unsigned long value; + int err; + + err = tegra_fb_get_tiling(fb, &tiling); + if (err < 0) + return err; tegra_dc_writel(dc, WINDOW_A_SELECT, DC_CMD_DISPLAY_WINDOW_HEADER); @@ -417,15 +457,44 @@ static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y, tegra_dc_writel(dc, format, DC_WIN_COLOR_DEPTH); tegra_dc_writel(dc, swap, DC_WIN_BYTE_SWAP); - if (tegra_fb_is_tiled(fb)) { - value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV | - DC_WIN_BUFFER_ADDR_MODE_TILE; + if (dc->soc->supports_block_linear) { + unsigned long height = tiling.value; + + switch (tiling.mode) { + case TEGRA_BO_TILING_MODE_PITCH: + value = DC_WINBUF_SURFACE_KIND_PITCH; + break; + + case TEGRA_BO_TILING_MODE_TILED: + value = DC_WINBUF_SURFACE_KIND_TILED; + break; + + case TEGRA_BO_TILING_MODE_BLOCK: + value = DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(height) | + DC_WINBUF_SURFACE_KIND_BLOCK; + break; + } + + tegra_dc_writel(dc, value, DC_WINBUF_SURFACE_KIND); } else { - value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV | - DC_WIN_BUFFER_ADDR_MODE_LINEAR; - } + switch (tiling.mode) { + case TEGRA_BO_TILING_MODE_PITCH: + value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV | + DC_WIN_BUFFER_ADDR_MODE_LINEAR; + break; - tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE); + case TEGRA_BO_TILING_MODE_TILED: + value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV | + DC_WIN_BUFFER_ADDR_MODE_TILE; + break; + + case TEGRA_BO_TILING_MODE_BLOCK: + DRM_ERROR("hardware doesn't support block linear mode\n"); + return -EINVAL; + } + + tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE); + } /* make sure bottom-up buffers are properly displayed */ if (tegra_fb_is_bottom_up(fb)) { @@ -1277,16 +1346,19 @@ static const struct host1x_client_ops dc_client_ops = { static const struct tegra_dc_soc_info tegra20_dc_soc_info = { .supports_interlacing = false, .supports_cursor = false, + .supports_block_linear = false, }; static const struct tegra_dc_soc_info tegra30_dc_soc_info = { .supports_interlacing = false, .supports_cursor = false, + .supports_block_linear = false, }; static const struct tegra_dc_soc_info tegra124_dc_soc_info = { .supports_interlacing = true, .supports_cursor = true, + .supports_block_linear = true, }; static const struct of_device_id tegra_dc_of_match[] = { diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h index 78c5feff95d2..705c93b00794 100644 --- a/drivers/gpu/drm/tegra/dc.h +++ b/drivers/gpu/drm/tegra/dc.h @@ -428,6 +428,11 @@ #define DC_WINBUF_ADDR_V_OFFSET_NS 0x809 #define DC_WINBUF_UFLOW_STATUS 0x80a +#define DC_WINBUF_SURFACE_KIND 0x80b +#define DC_WINBUF_SURFACE_KIND_PITCH (0 << 0) +#define DC_WINBUF_SURFACE_KIND_TILED (1 << 0) +#define DC_WINBUF_SURFACE_KIND_BLOCK (2 << 0) +#define DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(x) (((x) & 0x7) << 4) #define DC_WINBUF_AD_UFLOW_STATUS 0xbca #define DC_WINBUF_BD_UFLOW_STATUS 0xdca diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index 0d30689dff01..96d754e7b3eb 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -19,6 +19,8 @@ #include #include +#include "gem.h" + struct reset_control; struct tegra_fb { @@ -160,7 +162,8 @@ struct tegra_dc_window { unsigned int stride[2]; unsigned long base[3]; bool bottom_up; - bool tiled; + + struct tegra_bo_tiling tiling; }; /* from dc.c */ @@ -279,7 +282,8 @@ int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link, struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, unsigned int index); bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer); -bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer); +int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer, + struct tegra_bo_tiling *tiling); int tegra_drm_fb_prepare(struct drm_device *drm); int tegra_drm_fb_init(struct drm_device *drm); void tegra_drm_fb_exit(struct drm_device *drm); diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index fc1528e0bda1..7790d43ad082 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -46,14 +46,15 @@ bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer) return false; } -bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer) +int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer, + struct tegra_bo_tiling *tiling) { struct tegra_fb *fb = to_tegra_fb(framebuffer); - if (fb->planes[0]->flags & TEGRA_BO_TILED) - return true; + /* TODO: handle YUV formats? */ + *tiling = fb->planes[0]->tiling; - return false; + return 0; } static void tegra_fb_destroy(struct drm_framebuffer *framebuffer) diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index aa85b7b26f10..c1e4e8b6e5ca 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -126,7 +126,7 @@ struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size, goto err_mmap; if (flags & DRM_TEGRA_GEM_CREATE_TILED) - bo->flags |= TEGRA_BO_TILED; + bo->tiling.mode = TEGRA_BO_TILING_MODE_TILED; if (flags & DRM_TEGRA_GEM_CREATE_BOTTOM_UP) bo->flags |= TEGRA_BO_BOTTOM_UP; diff --git a/drivers/gpu/drm/tegra/gem.h b/drivers/gpu/drm/tegra/gem.h index 2f3fe96c5154..43a25c853357 100644 --- a/drivers/gpu/drm/tegra/gem.h +++ b/drivers/gpu/drm/tegra/gem.h @@ -16,8 +16,18 @@ #include #include -#define TEGRA_BO_TILED (1 << 0) -#define TEGRA_BO_BOTTOM_UP (1 << 1) +#define TEGRA_BO_BOTTOM_UP (1 << 0) + +enum tegra_bo_tiling_mode { + TEGRA_BO_TILING_MODE_PITCH, + TEGRA_BO_TILING_MODE_TILED, + TEGRA_BO_TILING_MODE_BLOCK, +}; + +struct tegra_bo_tiling { + enum tegra_bo_tiling_mode mode; + unsigned long value; +}; struct tegra_bo { struct drm_gem_object gem; @@ -26,6 +36,8 @@ struct tegra_bo { struct sg_table *sgt; dma_addr_t paddr; void *vaddr; + + struct tegra_bo_tiling tiling; }; static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem) -- cgit v1.2.3 From 7678d71fb4bd6abe6ccb46afe7d90b3ed01ee936 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 3 Jun 2014 14:56:57 +0200 Subject: drm/tegra: Add SET/GET_TILING IOCTLs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently the tiling parameters of buffer objects can only be set at allocation time, and only a single tiled mode is supported. This new DRM_TEGRA_GEM_SET_TILING IOCTL allows more modes to be set and also allows the tiling mode to be changed after the allocation. This will enable the Tegra DRM driver to import buffers from a GPU and directly scan them out by configuring the display controller appropriately. To complement this, the DRM_TEGRA_GEM_GET_TILING IOCTL can query the current tiling mode of a buffer object. This is necessary when importing buffers via handle (as is done in Mesa for example) so that userspace can determine the proper parameters for the 2D or 3D engines. Reviewed-by: Stéphane Marchesin Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/drm.c | 95 ++++++++++++++++++++++++++++++++++++++++++++ include/uapi/drm/tegra_drm.h | 25 ++++++++++++ 2 files changed, 120 insertions(+) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index fd736efd14bd..a029525b598f 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -455,6 +455,99 @@ static int tegra_get_syncpt_base(struct drm_device *drm, void *data, return 0; } + +static int tegra_gem_set_tiling(struct drm_device *drm, void *data, + struct drm_file *file) +{ + struct drm_tegra_gem_set_tiling *args = data; + enum tegra_bo_tiling_mode mode; + struct drm_gem_object *gem; + unsigned long value = 0; + struct tegra_bo *bo; + + switch (args->mode) { + case DRM_TEGRA_GEM_TILING_MODE_PITCH: + mode = TEGRA_BO_TILING_MODE_PITCH; + + if (args->value != 0) + return -EINVAL; + + break; + + case DRM_TEGRA_GEM_TILING_MODE_TILED: + mode = TEGRA_BO_TILING_MODE_TILED; + + if (args->value != 0) + return -EINVAL; + + break; + + case DRM_TEGRA_GEM_TILING_MODE_BLOCK: + mode = TEGRA_BO_TILING_MODE_BLOCK; + + if (args->value > 5) + return -EINVAL; + + value = args->value; + break; + + default: + return -EINVAL; + } + + gem = drm_gem_object_lookup(drm, file, args->handle); + if (!gem) + return -ENOENT; + + bo = to_tegra_bo(gem); + + bo->tiling.mode = mode; + bo->tiling.value = value; + + drm_gem_object_unreference(gem); + + return 0; +} + +static int tegra_gem_get_tiling(struct drm_device *drm, void *data, + struct drm_file *file) +{ + struct drm_tegra_gem_get_tiling *args = data; + struct drm_gem_object *gem; + struct tegra_bo *bo; + int err = 0; + + gem = drm_gem_object_lookup(drm, file, args->handle); + if (!gem) + return -ENOENT; + + bo = to_tegra_bo(gem); + + switch (bo->tiling.mode) { + case TEGRA_BO_TILING_MODE_PITCH: + args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH; + args->value = 0; + break; + + case TEGRA_BO_TILING_MODE_TILED: + args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED; + args->value = 0; + break; + + case TEGRA_BO_TILING_MODE_BLOCK: + args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK; + args->value = bo->tiling.value; + break; + + default: + err = -EINVAL; + break; + } + + drm_gem_object_unreference(gem); + + return err; +} #endif static const struct drm_ioctl_desc tegra_drm_ioctls[] = { @@ -469,6 +562,8 @@ static const struct drm_ioctl_desc tegra_drm_ioctls[] = { DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, DRM_UNLOCKED), #endif }; diff --git a/include/uapi/drm/tegra_drm.h b/include/uapi/drm/tegra_drm.h index b75482112428..0829f75eb986 100644 --- a/include/uapi/drm/tegra_drm.h +++ b/include/uapi/drm/tegra_drm.h @@ -129,6 +129,27 @@ struct drm_tegra_submit { __u32 reserved[5]; /* future expansion */ }; +#define DRM_TEGRA_GEM_TILING_MODE_PITCH 0 +#define DRM_TEGRA_GEM_TILING_MODE_TILED 1 +#define DRM_TEGRA_GEM_TILING_MODE_BLOCK 2 + +struct drm_tegra_gem_set_tiling { + /* input */ + __u32 handle; + __u32 mode; + __u32 value; + __u32 pad; +}; + +struct drm_tegra_gem_get_tiling { + /* input */ + __u32 handle; + /* output */ + __u32 mode; + __u32 value; + __u32 pad; +}; + #define DRM_TEGRA_GEM_CREATE 0x00 #define DRM_TEGRA_GEM_MMAP 0x01 #define DRM_TEGRA_SYNCPT_READ 0x02 @@ -139,6 +160,8 @@ struct drm_tegra_submit { #define DRM_TEGRA_GET_SYNCPT 0x07 #define DRM_TEGRA_SUBMIT 0x08 #define DRM_TEGRA_GET_SYNCPT_BASE 0x09 +#define DRM_TEGRA_GEM_SET_TILING 0x0a +#define DRM_TEGRA_GEM_GET_TILING 0x0b #define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create) #define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap) @@ -150,5 +173,7 @@ struct drm_tegra_submit { #define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt) #define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit) #define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base) +#define DRM_IOCTL_TEGRA_GEM_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_SET_TILING, struct drm_tegra_gem_set_tiling) +#define DRM_IOCTL_TEGRA_GEM_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_GET_TILING, struct drm_tegra_gem_get_tiling) #endif -- cgit v1.2.3 From 7b129087874b925901def7ae507f7d9fac406211 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 10 Jun 2014 12:04:03 +0200 Subject: drm/tegra: Add SET/GET_FLAGS IOCTLs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The DRM_TEGRA_GEM_SET_FLAGS IOCTL can be used to set the flags of a buffer object after it has been allocated or imported. Flags associated with a buffer object can be queried using the DRM_TEGRA_GEM_GET_FLAGS IOCTL. Reviewed-by: Stéphane Marchesin Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/drm.c | 49 ++++++++++++++++++++++++++++++++++++++++++++ include/uapi/drm/tegra_drm.h | 21 +++++++++++++++++++ 2 files changed, 70 insertions(+) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index a029525b598f..6e2e714a0649 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -548,6 +548,53 @@ static int tegra_gem_get_tiling(struct drm_device *drm, void *data, return err; } + +static int tegra_gem_set_flags(struct drm_device *drm, void *data, + struct drm_file *file) +{ + struct drm_tegra_gem_set_flags *args = data; + struct drm_gem_object *gem; + struct tegra_bo *bo; + + if (args->flags & ~DRM_TEGRA_GEM_FLAGS) + return -EINVAL; + + gem = drm_gem_object_lookup(drm, file, args->handle); + if (!gem) + return -ENOENT; + + bo = to_tegra_bo(gem); + bo->flags = 0; + + if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP) + bo->flags |= TEGRA_BO_BOTTOM_UP; + + drm_gem_object_unreference(gem); + + return 0; +} + +static int tegra_gem_get_flags(struct drm_device *drm, void *data, + struct drm_file *file) +{ + struct drm_tegra_gem_get_flags *args = data; + struct drm_gem_object *gem; + struct tegra_bo *bo; + + gem = drm_gem_object_lookup(drm, file, args->handle); + if (!gem) + return -ENOENT; + + bo = to_tegra_bo(gem); + args->flags = 0; + + if (bo->flags & TEGRA_BO_BOTTOM_UP) + args->flags |= DRM_TEGRA_GEM_BOTTOM_UP; + + drm_gem_object_unreference(gem); + + return 0; +} #endif static const struct drm_ioctl_desc tegra_drm_ioctls[] = { @@ -564,6 +611,8 @@ static const struct drm_ioctl_desc tegra_drm_ioctls[] = { DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, DRM_UNLOCKED), #endif }; diff --git a/include/uapi/drm/tegra_drm.h b/include/uapi/drm/tegra_drm.h index 0829f75eb986..c15d781ecc0f 100644 --- a/include/uapi/drm/tegra_drm.h +++ b/include/uapi/drm/tegra_drm.h @@ -150,6 +150,23 @@ struct drm_tegra_gem_get_tiling { __u32 pad; }; +#define DRM_TEGRA_GEM_BOTTOM_UP (1 << 0) +#define DRM_TEGRA_GEM_FLAGS (DRM_TEGRA_GEM_BOTTOM_UP) + +struct drm_tegra_gem_set_flags { + /* input */ + __u32 handle; + /* output */ + __u32 flags; +}; + +struct drm_tegra_gem_get_flags { + /* input */ + __u32 handle; + /* output */ + __u32 flags; +}; + #define DRM_TEGRA_GEM_CREATE 0x00 #define DRM_TEGRA_GEM_MMAP 0x01 #define DRM_TEGRA_SYNCPT_READ 0x02 @@ -162,6 +179,8 @@ struct drm_tegra_gem_get_tiling { #define DRM_TEGRA_GET_SYNCPT_BASE 0x09 #define DRM_TEGRA_GEM_SET_TILING 0x0a #define DRM_TEGRA_GEM_GET_TILING 0x0b +#define DRM_TEGRA_GEM_SET_FLAGS 0x0c +#define DRM_TEGRA_GEM_GET_FLAGS 0x0d #define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create) #define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap) @@ -175,5 +194,7 @@ struct drm_tegra_gem_get_tiling { #define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base) #define DRM_IOCTL_TEGRA_GEM_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_SET_TILING, struct drm_tegra_gem_set_tiling) #define DRM_IOCTL_TEGRA_GEM_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_GET_TILING, struct drm_tegra_gem_get_tiling) +#define DRM_IOCTL_TEGRA_GEM_SET_FLAGS DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_SET_FLAGS, struct drm_tegra_gem_set_flags) +#define DRM_IOCTL_TEGRA_GEM_GET_FLAGS DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_GET_FLAGS, struct drm_tegra_gem_get_flags) #endif -- cgit v1.2.3 From bd4f236024a8027b2d5ee9de1f823fbf07c39cef Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 3 Jun 2014 14:59:29 +0200 Subject: drm/tegra: Allow non-authenticated processes to create buffer objects MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This matches what other drivers do for equivalent IOCTLs. Reviewed-by: Stéphane Marchesin Tested-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 6e2e714a0649..5cba5e736130 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -599,7 +599,7 @@ static int tegra_gem_get_flags(struct drm_device *drm, void *data, static const struct drm_ioctl_desc tegra_drm_ioctls[] = { #ifdef CONFIG_DRM_TEGRA_STAGING - DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED), -- cgit v1.2.3 From 961e3beae3b29ae9463631415342244cdaf1cd47 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 10 Jun 2014 10:25:00 +0200 Subject: drm/tegra: Make job submission 64-bit safe Job submission currently relies on the fact that struct drm_tegra_reloc and struct host1x_reloc are the same size and uses a simple call to the copy_from_user() function to copy them to kernel space. This causes the handle to be stored in the buffer object field, which then needs a cast to a 32 bit integer to resolve it to a proper buffer object pointer and store it back in the buffer object field. On 64-bit architectures that will no longer work, since pointers are 64 bits wide whereas handles will remain 32 bits. This causes the sizes of both structures to because different and copying will no longer work. Fix this by adding a new function, host1x_reloc_get_user(), that copies the structures field by field. While at it, use substructures for the command and target buffers in struct host1x_reloc for better readability. Also use unsized types to make it more obvious that this isn't part of userspace ABI. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/drm.c | 62 ++++++++++++++++++++++++++++++++------------- drivers/gpu/host1x/job.c | 22 ++++++++-------- include/linux/host1x.h | 15 ++++++----- 3 files changed, 64 insertions(+), 35 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 5cba5e736130..59736bb810cd 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -132,6 +132,45 @@ host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle) return &bo->base; } +static int host1x_reloc_copy_from_user(struct host1x_reloc *dest, + struct drm_tegra_reloc __user *src, + struct drm_device *drm, + struct drm_file *file) +{ + u32 cmdbuf, target; + int err; + + err = get_user(cmdbuf, &src->cmdbuf.handle); + if (err < 0) + return err; + + err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset); + if (err < 0) + return err; + + err = get_user(target, &src->target.handle); + if (err < 0) + return err; + + err = get_user(dest->target.offset, &src->cmdbuf.offset); + if (err < 0) + return err; + + err = get_user(dest->shift, &src->shift); + if (err < 0) + return err; + + dest->cmdbuf.bo = host1x_bo_lookup(drm, file, cmdbuf); + if (!dest->cmdbuf.bo) + return -ENOENT; + + dest->target.bo = host1x_bo_lookup(drm, file, target); + if (!dest->target.bo) + return -ENOENT; + + return 0; +} + int tegra_drm_submit(struct tegra_drm_context *context, struct drm_tegra_submit *args, struct drm_device *drm, struct drm_file *file) @@ -184,26 +223,13 @@ int tegra_drm_submit(struct tegra_drm_context *context, cmdbufs++; } - if (copy_from_user(job->relocarray, relocs, - sizeof(*relocs) * num_relocs)) { - err = -EFAULT; - goto fail; - } - + /* copy and resolve relocations from submit */ while (num_relocs--) { - struct host1x_reloc *reloc = &job->relocarray[num_relocs]; - struct host1x_bo *cmdbuf, *target; - - cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf); - target = host1x_bo_lookup(drm, file, (u32)reloc->target); - - reloc->cmdbuf = cmdbuf; - reloc->target = target; - - if (!reloc->target || !reloc->cmdbuf) { - err = -ENOENT; + err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs], + &relocs[num_relocs], drm, + file); + if (err < 0) goto fail; - } } if (copy_from_user(job->waitchk, waitchks, diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c index 112f27e51bc7..63bd63f3c7df 100644 --- a/drivers/gpu/host1x/job.c +++ b/drivers/gpu/host1x/job.c @@ -185,16 +185,16 @@ static unsigned int pin_job(struct host1x_job *job) struct sg_table *sgt; dma_addr_t phys_addr; - reloc->target = host1x_bo_get(reloc->target); - if (!reloc->target) + reloc->target.bo = host1x_bo_get(reloc->target.bo); + if (!reloc->target.bo) goto unpin; - phys_addr = host1x_bo_pin(reloc->target, &sgt); + phys_addr = host1x_bo_pin(reloc->target.bo, &sgt); if (!phys_addr) goto unpin; job->addr_phys[job->num_unpins] = phys_addr; - job->unpins[job->num_unpins].bo = reloc->target; + job->unpins[job->num_unpins].bo = reloc->target.bo; job->unpins[job->num_unpins].sgt = sgt; job->num_unpins++; } @@ -235,21 +235,21 @@ static unsigned int do_relocs(struct host1x_job *job, struct host1x_bo *cmdbuf) for (i = 0; i < job->num_relocs; i++) { struct host1x_reloc *reloc = &job->relocarray[i]; u32 reloc_addr = (job->reloc_addr_phys[i] + - reloc->target_offset) >> reloc->shift; + reloc->target.offset) >> reloc->shift; u32 *target; /* skip all other gathers */ - if (cmdbuf != reloc->cmdbuf) + if (cmdbuf != reloc->cmdbuf.bo) continue; - if (last_page != reloc->cmdbuf_offset >> PAGE_SHIFT) { + if (last_page != reloc->cmdbuf.offset >> PAGE_SHIFT) { if (cmdbuf_page_addr) host1x_bo_kunmap(cmdbuf, last_page, cmdbuf_page_addr); cmdbuf_page_addr = host1x_bo_kmap(cmdbuf, - reloc->cmdbuf_offset >> PAGE_SHIFT); - last_page = reloc->cmdbuf_offset >> PAGE_SHIFT; + reloc->cmdbuf.offset >> PAGE_SHIFT); + last_page = reloc->cmdbuf.offset >> PAGE_SHIFT; if (unlikely(!cmdbuf_page_addr)) { pr_err("Could not map cmdbuf for relocation\n"); @@ -257,7 +257,7 @@ static unsigned int do_relocs(struct host1x_job *job, struct host1x_bo *cmdbuf) } } - target = cmdbuf_page_addr + (reloc->cmdbuf_offset & ~PAGE_MASK); + target = cmdbuf_page_addr + (reloc->cmdbuf.offset & ~PAGE_MASK); *target = reloc_addr; } @@ -272,7 +272,7 @@ static bool check_reloc(struct host1x_reloc *reloc, struct host1x_bo *cmdbuf, { offset *= sizeof(u32); - if (reloc->cmdbuf != cmdbuf || reloc->cmdbuf_offset != offset) + if (reloc->cmdbuf.bo != cmdbuf || reloc->cmdbuf.offset != offset) return false; return true; diff --git a/include/linux/host1x.h b/include/linux/host1x.h index d2b52999e771..bb9840fd1e18 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -164,12 +164,15 @@ int host1x_job_submit(struct host1x_job *job); */ struct host1x_reloc { - struct host1x_bo *cmdbuf; - u32 cmdbuf_offset; - struct host1x_bo *target; - u32 target_offset; - u32 shift; - u32 pad; + struct { + struct host1x_bo *bo; + unsigned long offset; + } cmdbuf; + struct { + struct host1x_bo *bo; + unsigned long offset; + } target; + unsigned long shift; }; struct host1x_job { -- cgit v1.2.3 From 054b1bd16138f92cd690324958e48f790a4cd234 Mon Sep 17 00:00:00 2001 From: Stéphane Marchesin Date: Thu, 19 Jun 2014 18:18:29 -0700 Subject: drm/tegra: sor - Use bits-per-color from panel MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This change uses the value of bits-per-color from panel to remove one more hardcoded value. Signed-off-by: Stéphane Marchesin Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/sor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 64f57fa9b8f6..479da1b210b4 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -525,7 +525,7 @@ static int tegra_output_sor_enable(struct tegra_output *output) dev_err(sor->dev, "failed to set safe parent clock: %d\n", err); memset(&config, 0, sizeof(config)); - config.bits_per_pixel = 24; /* XXX: don't hardcode? */ + config.bits_per_pixel = output->connector.display_info.bpc * 3; err = tegra_sor_calc_config(sor, mode, &config, &link); if (err < 0) -- cgit v1.2.3 From 3f4f3b5fede02d338383619ff57744a8415ccceb Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 7 Jul 2014 15:35:06 +0200 Subject: drm/tegra: sor - Configure proper sync polarities Program the sync signal polarities according to the display mode. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/sor.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 479da1b210b4..6cb861bf1e03 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -815,12 +815,22 @@ static int tegra_output_sor_enable(struct tegra_output *output) * configure panel (24bpp, vsync-, hsync-, DP-A protocol, complete * raster, associate with display controller) */ - value = SOR_STATE_ASY_VSYNCPOL | - SOR_STATE_ASY_HSYNCPOL | - SOR_STATE_ASY_PROTOCOL_DP_A | + value = SOR_STATE_ASY_PROTOCOL_DP_A | SOR_STATE_ASY_CRC_MODE_COMPLETE | SOR_STATE_ASY_OWNER(dc->pipe + 1); + if (mode->flags & DRM_MODE_FLAG_PHSYNC) + value &= ~SOR_STATE_ASY_HSYNCPOL; + + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + value |= SOR_STATE_ASY_HSYNCPOL; + + if (mode->flags & DRM_MODE_FLAG_PVSYNC) + value &= ~SOR_STATE_ASY_VSYNCPOL; + + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + value |= SOR_STATE_ASY_VSYNCPOL; + switch (config.bits_per_pixel) { case 24: value |= SOR_STATE_ASY_PIXELDEPTH_BPP_24_444; -- cgit v1.2.3 From d1f3e1e0b38d49cbb996dcf0fde5b5205d12a23d Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 11 Jul 2014 08:29:14 +0200 Subject: drm/tegra: Properly align stride for framebuffers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Tegra20 and Tegra30 both required the buffer line stride to be aligned on 8 byte boundaries. Tegra114 and Tegra124 increased the alignment to 64 bytes. Introduce a parameter to specify the alignment requirements for each display controller and round up the pitch of newly allocated framebuffers appropriately. Originally-by: Stéphane Marchesin Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 19 +++++++++++++++++++ drivers/gpu/drm/tegra/drm.h | 2 ++ drivers/gpu/drm/tegra/fb.c | 4 +++- drivers/gpu/drm/tegra/gem.c | 3 +++ 4 files changed, 27 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index afcca04f5367..8886907d44b0 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -19,6 +19,7 @@ struct tegra_dc_soc_info { bool supports_interlacing; bool supports_cursor; bool supports_block_linear; + unsigned int pitch_align; }; struct tegra_plane { @@ -1283,12 +1284,20 @@ static int tegra_dc_init(struct host1x_client *client) { struct drm_device *drm = dev_get_drvdata(client->parent); struct tegra_dc *dc = host1x_client_to_dc(client); + struct tegra_drm *tegra = drm->dev_private; int err; drm_crtc_init(drm, &dc->base, &tegra_crtc_funcs); drm_mode_crtc_set_gamma_size(&dc->base, 256); drm_crtc_helper_add(&dc->base, &tegra_crtc_helper_funcs); + /* + * Keep track of the minimum pitch alignment across all display + * controllers. + */ + if (dc->soc->pitch_align > tegra->pitch_align) + tegra->pitch_align = dc->soc->pitch_align; + err = tegra_dc_rgb_init(drm, dc); if (err < 0 && err != -ENODEV) { dev_err(dc->dev, "failed to initialize RGB output: %d\n", err); @@ -1347,18 +1356,28 @@ static const struct tegra_dc_soc_info tegra20_dc_soc_info = { .supports_interlacing = false, .supports_cursor = false, .supports_block_linear = false, + .pitch_align = 8, }; static const struct tegra_dc_soc_info tegra30_dc_soc_info = { .supports_interlacing = false, .supports_cursor = false, .supports_block_linear = false, + .pitch_align = 8, +}; + +static const struct tegra_dc_soc_info tegra114_dc_soc_info = { + .supports_interlacing = false, + .supports_cursor = false, + .supports_block_linear = false, + .pitch_align = 64, }; static const struct tegra_dc_soc_info tegra124_dc_soc_info = { .supports_interlacing = true, .supports_cursor = true, .supports_block_linear = true, + .pitch_align = 64, }; static const struct of_device_id tegra_dc_of_match[] = { diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index 96d754e7b3eb..e89c70fa82d5 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -45,6 +45,8 @@ struct tegra_drm { #ifdef CONFIG_DRM_TEGRA_FBDEV struct tegra_fbdev *fbdev; #endif + + unsigned int pitch_align; }; struct tegra_drm_client; diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index 7790d43ad082..3513d12d5aa1 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -194,6 +194,7 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes) { struct tegra_fbdev *fbdev = to_tegra_fbdev(helper); + struct tegra_drm *tegra = helper->dev->dev_private; struct drm_device *drm = helper->dev; struct drm_mode_fb_cmd2 cmd = { 0 }; unsigned int bytes_per_pixel; @@ -208,7 +209,8 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper, cmd.width = sizes->surface_width; cmd.height = sizes->surface_height; - cmd.pitches[0] = sizes->surface_width * bytes_per_pixel; + cmd.pitches[0] = round_up(sizes->surface_width * bytes_per_pixel, + tegra->pitch_align); cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index c1e4e8b6e5ca..2545c7a468a2 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -16,6 +16,7 @@ #include #include +#include "drm.h" #include "gem.h" static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo) @@ -259,8 +260,10 @@ int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, struct drm_mode_create_dumb *args) { int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + struct tegra_drm *tegra = drm->dev_private; struct tegra_bo *bo; + min_pitch = round_up(min_pitch, tegra->pitch_align); if (args->pitch < min_pitch) args->pitch = min_pitch; -- cgit v1.2.3 From 5482d75a6597de97f79255a257c486a6960c6c65 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 11 Jul 2014 08:39:03 +0200 Subject: drm/tegra: dc - Reset controller on driver remove Since the device will no longer be used, may as well keep it in reset to potentially save some power and make sure it is in a clean state the next time it's probed. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 8886907d44b0..b2065d9e13d4 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1521,6 +1521,7 @@ static int tegra_dc_remove(struct platform_device *pdev) return err; } + reset_control_assert(dc->rst); clk_disable_unprepare(dc->clk); return 0; -- cgit v1.2.3 From ef70728c7a6571a1a7115031e932b811f1740b2e Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 18 Jun 2014 16:21:55 -0600 Subject: drm/tegra: add MODULE_DEVICE_TABLEs When tegra-drm.ko is built as a module, these MODULE_DEVICE_TABLEs allow the module to be auto-loaded since the module will match the devices instantiated from device tree. (Notes for stable: in 3.14+, just git rm any conflicting file, since they are added in later kernels. For 3.13 and below, manual merging will be needed) Cc: Signed-off-by: Stephen Warren Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 1 + drivers/gpu/drm/tegra/dpaux.c | 1 + drivers/gpu/drm/tegra/dsi.c | 1 + drivers/gpu/drm/tegra/gr2d.c | 1 + drivers/gpu/drm/tegra/gr3d.c | 1 + drivers/gpu/drm/tegra/hdmi.c | 1 + drivers/gpu/drm/tegra/sor.c | 1 + 7 files changed, 7 insertions(+) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index b2065d9e13d4..6553fd238685 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1394,6 +1394,7 @@ static const struct of_device_id tegra_dc_of_match[] = { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, tegra_dc_of_match); static int tegra_dc_parse_dt(struct tegra_dc *dc) { diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 3f132e356e9c..708f783ead47 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -382,6 +382,7 @@ static const struct of_device_id tegra_dpaux_of_match[] = { { .compatible = "nvidia,tegra124-dpaux", }, { }, }; +MODULE_DEVICE_TABLE(of, tegra_dpaux_of_match); struct platform_driver tegra_dpaux_driver = { .driver = { diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index eadfeaf9e1eb..f7874458926a 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -983,6 +983,7 @@ static const struct of_device_id tegra_dsi_of_match[] = { { .compatible = "nvidia,tegra114-dsi", }, { }, }; +MODULE_DEVICE_TABLE(of, tegra_dsi_of_match); struct platform_driver tegra_dsi_driver = { .driver = { diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c index 7c53941f2a9e..02cd3e37a6ec 100644 --- a/drivers/gpu/drm/tegra/gr2d.c +++ b/drivers/gpu/drm/tegra/gr2d.c @@ -121,6 +121,7 @@ static const struct of_device_id gr2d_match[] = { { .compatible = "nvidia,tegra20-gr2d" }, { }, }; +MODULE_DEVICE_TABLE(of, gr2d_match); static const u32 gr2d_addr_regs[] = { GR2D_UA_BASE_ADDR, diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c index 30f5ba9bd6d0..2bea2b2d204e 100644 --- a/drivers/gpu/drm/tegra/gr3d.c +++ b/drivers/gpu/drm/tegra/gr3d.c @@ -130,6 +130,7 @@ static const struct of_device_id tegra_gr3d_match[] = { { .compatible = "nvidia,tegra20-gr3d" }, { } }; +MODULE_DEVICE_TABLE(of, tegra_gr3d_match); static const u32 gr3d_addr_regs[] = { GR3D_IDX_ATTRIBUTE( 0), diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index ba067bb767e3..ffe26547328d 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -1450,6 +1450,7 @@ static const struct of_device_id tegra_hdmi_of_match[] = { { .compatible = "nvidia,tegra20-hdmi", .data = &tegra20_hdmi_config }, { }, }; +MODULE_DEVICE_TABLE(of, tegra_hdmi_of_match); static int tegra_hdmi_probe(struct platform_device *pdev) { diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 6cb861bf1e03..0410e467b828 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -1465,6 +1465,7 @@ static const struct of_device_id tegra_sor_of_match[] = { { .compatible = "nvidia,tegra124-sor", }, { }, }; +MODULE_DEVICE_TABLE(of, tegra_sor_of_match); struct platform_driver tegra_sor_driver = { .driver = { -- cgit v1.2.3 From 0407ed8afe0cada72b0c28fd35c821fe3b235593 Mon Sep 17 00:00:00 2001 From: Ajay Kumar Date: Thu, 31 Jul 2014 23:12:07 +0530 Subject: drm/tegra: Add support for panel prepare and unprepare routines Modify tegra output driver to support the new panel calls: prepare and unprepare. Signed-off-by: Ajay Kumar Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/output.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index a3e4f1eca6f7..9609bc3e2443 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -140,7 +140,9 @@ static void tegra_encoder_dpms(struct drm_encoder *encoder, int mode) if (mode != DRM_MODE_DPMS_ON) { drm_panel_disable(panel); tegra_output_disable(output); + drm_panel_unprepare(panel); } else { + drm_panel_prepare(panel); tegra_output_enable(output); drm_panel_enable(panel); } -- cgit v1.2.3