Re: [PATCH 06/14] drm: extract drm_atomic_uapi.c

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On Mon, Sep 03, 2018 at 06:54:31PM +0200, Daniel Vetter wrote:
> This leaves all the commit/check and state handling in drm_atomic.c,
> while pulling all the uapi glue and the huge ioctl itself into a
> seprate file.
> 
> This seems to almost perfectly split the rather big drm_atomic.c file
> into 2 equal sizes.
> 
> Also adjust the kerneldoc and type a very terse overview text.
> 
> v2: Rebase.
> 
> v3: Fix tiny typo.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Sean Paul <seanpaul@xxxxxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Cc: Rob Clark <robdclark@xxxxxxxxx>
> Cc: Eric Anholt <eric@xxxxxxxxxx>
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> Cc: freedreno@xxxxxxxxxxxxxxxxxxxxx
> ---
>  Documentation/gpu/drm-kms.rst                |   11 +-
>  drivers/gpu/drm/Makefile                     |    3 +-
>  drivers/gpu/drm/drm_atomic.c                 | 1359 +----------------
>  drivers/gpu/drm/drm_atomic_helper.c          |    1 +
>  drivers/gpu/drm/drm_atomic_uapi.c            | 1393 ++++++++++++++++++
>  drivers/gpu/drm/drm_crtc_helper.c            |    1 +
>  drivers/gpu/drm/drm_crtc_internal.h          |    5 +
>  drivers/gpu/drm/drm_framebuffer.c            |    1 +
>  drivers/gpu/drm/drm_gem_framebuffer_helper.c |    1 +
>  drivers/gpu/drm/drm_plane_helper.c           |    1 +
>  drivers/gpu/drm/i915/intel_display.c         |    1 +
>  drivers/gpu/drm/msm/msm_atomic.c             |    2 +
>  drivers/gpu/drm/vc4/vc4_crtc.c               |    1 +
>  drivers/gpu/drm/vc4/vc4_plane.c              |    1 +
>  include/drm/drm_atomic.h                     |   16 -
>  include/drm/drm_atomic_uapi.h                |   58 +
>  16 files changed, 1480 insertions(+), 1375 deletions(-)
>  create mode 100644 drivers/gpu/drm/drm_atomic_uapi.c
>  create mode 100644 include/drm/drm_atomic_uapi.h
> 
> diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> index 3a9dd68b97c9..4b1501b4835b 100644
> --- a/Documentation/gpu/drm-kms.rst
> +++ b/Documentation/gpu/drm-kms.rst
> @@ -287,6 +287,15 @@ Atomic Mode Setting Function Reference
>  .. kernel-doc:: drivers/gpu/drm/drm_atomic.c
>     :export:
>  
> +Atomic Mode Setting IOCTL and UAPI Functions
> +--------------------------------------------
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_atomic_uapi.c
> +   :doc: overview
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_atomic_uapi.c
> +   :export:
> +
>  CRTC Abstraction
>  ================
>  
> @@ -563,7 +572,7 @@ Tile Group Property
>  Explicit Fencing Properties
>  ---------------------------
>  
> -.. kernel-doc:: drivers/gpu/drm/drm_atomic.c
> +.. kernel-doc:: drivers/gpu/drm/drm_atomic_uapi.c
>     :doc: explicit fencing properties
>  
>  Existing KMS Properties
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index a6771cef85e2..bc6a16a3c36e 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -18,7 +18,8 @@ drm-y       :=	drm_auth.o drm_bufs.o drm_cache.o \
>  		drm_encoder.o drm_mode_object.o drm_property.o \
>  		drm_plane.o drm_color_mgmt.o drm_print.o \
>  		drm_dumb_buffers.o drm_mode_config.o drm_vblank.o \
> -		drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o
> +		drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o \
> +		drm_atomic_uapi.o
>  
>  drm-$(CONFIG_DRM_LIB_RANDOM) += lib/drm_random.o
>  drm-$(CONFIG_DRM_VM) += drm_vm.o
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 29a4e6959358..19634e03b78e 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -28,6 +28,7 @@
>  
>  #include <drm/drmP.h>
>  #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <drm/drm_mode.h>
>  #include <drm/drm_print.h>
>  #include <drm/drm_writeback.h>
> @@ -309,285 +310,6 @@ drm_atomic_get_crtc_state(struct drm_atomic_state *state,
>  }
>  EXPORT_SYMBOL(drm_atomic_get_crtc_state);
>  
> -static void set_out_fence_for_crtc(struct drm_atomic_state *state,
> -				   struct drm_crtc *crtc, s32 __user *fence_ptr)
> -{
> -	state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
> -}
> -
> -static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
> -					  struct drm_crtc *crtc)
> -{
> -	s32 __user *fence_ptr;
> -
> -	fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
> -	state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
> -
> -	return fence_ptr;
> -}
> -
> -static int set_out_fence_for_connector(struct drm_atomic_state *state,
> -					struct drm_connector *connector,
> -					s32 __user *fence_ptr)
> -{
> -	unsigned int index = drm_connector_index(connector);
> -
> -	if (!fence_ptr)
> -		return 0;
> -
> -	if (put_user(-1, fence_ptr))
> -		return -EFAULT;
> -
> -	state->connectors[index].out_fence_ptr = fence_ptr;
> -
> -	return 0;
> -}
> -
> -static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
> -					       struct drm_connector *connector)
> -{
> -	unsigned int index = drm_connector_index(connector);
> -	s32 __user *fence_ptr;
> -
> -	fence_ptr = state->connectors[index].out_fence_ptr;
> -	state->connectors[index].out_fence_ptr = NULL;
> -
> -	return fence_ptr;
> -}
> -
> -/**
> - * drm_atomic_set_mode_for_crtc - set mode for CRTC
> - * @state: the CRTC whose incoming state to update
> - * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
> - *
> - * Set a mode (originating from the kernel) on the desired CRTC state and update
> - * the enable property.
> - *
> - * RETURNS:
> - * Zero on success, error code on failure. Cannot return -EDEADLK.
> - */
> -int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> -				 const struct drm_display_mode *mode)
> -{
> -	struct drm_crtc *crtc = state->crtc;
> -	struct drm_mode_modeinfo umode;
> -
> -	/* Early return for no change. */
> -	if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
> -		return 0;
> -
> -	drm_property_blob_put(state->mode_blob);
> -	state->mode_blob = NULL;
> -
> -	if (mode) {
> -		drm_mode_convert_to_umode(&umode, mode);
> -		state->mode_blob =
> -			drm_property_create_blob(state->crtc->dev,
> -		                                 sizeof(umode),
> -		                                 &umode);
> -		if (IS_ERR(state->mode_blob))
> -			return PTR_ERR(state->mode_blob);
> -
> -		drm_mode_copy(&state->mode, mode);
> -		state->enable = true;
> -		DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> -				 mode->name, crtc->base.id, crtc->name, state);
> -	} else {
> -		memset(&state->mode, 0, sizeof(state->mode));
> -		state->enable = false;
> -		DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> -				 crtc->base.id, crtc->name, state);
> -	}
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
> -
> -/**
> - * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
> - * @state: the CRTC whose incoming state to update
> - * @blob: pointer to blob property to use for mode
> - *
> - * Set a mode (originating from a blob property) on the desired CRTC state.
> - * This function will take a reference on the blob property for the CRTC state,
> - * and release the reference held on the state's existing mode property, if any
> - * was set.
> - *
> - * RETURNS:
> - * Zero on success, error code on failure. Cannot return -EDEADLK.
> - */
> -int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> -                                      struct drm_property_blob *blob)
> -{
> -	struct drm_crtc *crtc = state->crtc;
> -
> -	if (blob == state->mode_blob)
> -		return 0;
> -
> -	drm_property_blob_put(state->mode_blob);
> -	state->mode_blob = NULL;
> -
> -	memset(&state->mode, 0, sizeof(state->mode));
> -
> -	if (blob) {
> -		int ret;
> -
> -		if (blob->length != sizeof(struct drm_mode_modeinfo)) {
> -			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
> -					 crtc->base.id, crtc->name,
> -					 blob->length);
> -			return -EINVAL;
> -		}
> -
> -		ret = drm_mode_convert_umode(crtc->dev,
> -					     &state->mode, blob->data);
> -		if (ret) {
> -			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
> -					 crtc->base.id, crtc->name,
> -					 ret, drm_get_mode_status_name(state->mode.status));
> -			drm_mode_debug_printmodeline(&state->mode);
> -			return -EINVAL;
> -		}
> -
> -		state->mode_blob = drm_property_blob_get(blob);
> -		state->enable = true;
> -		DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> -				 state->mode.name, crtc->base.id, crtc->name,
> -				 state);
> -	} else {
> -		state->enable = false;
> -		DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> -				 crtc->base.id, crtc->name, state);
> -	}
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
> -
> -static int
> -drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
> -					 struct drm_property_blob **blob,
> -					 uint64_t blob_id,
> -					 ssize_t expected_size,
> -					 ssize_t expected_elem_size,
> -					 bool *replaced)
> -{
> -	struct drm_property_blob *new_blob = NULL;
> -
> -	if (blob_id != 0) {
> -		new_blob = drm_property_lookup_blob(dev, blob_id);
> -		if (new_blob == NULL)
> -			return -EINVAL;
> -
> -		if (expected_size > 0 &&
> -		    new_blob->length != expected_size) {
> -			drm_property_blob_put(new_blob);
> -			return -EINVAL;
> -		}
> -		if (expected_elem_size > 0 &&
> -		    new_blob->length % expected_elem_size != 0) {
> -			drm_property_blob_put(new_blob);
> -			return -EINVAL;
> -		}
> -	}
> -
> -	*replaced |= drm_property_replace_blob(blob, new_blob);
> -	drm_property_blob_put(new_blob);
> -
> -	return 0;
> -}
> -
> -static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
> -		struct drm_crtc_state *state, struct drm_property *property,
> -		uint64_t val)
> -{
> -	struct drm_device *dev = crtc->dev;
> -	struct drm_mode_config *config = &dev->mode_config;
> -	bool replaced = false;
> -	int ret;
> -
> -	if (property == config->prop_active)
> -		state->active = val;
> -	else if (property == config->prop_mode_id) {
> -		struct drm_property_blob *mode =
> -			drm_property_lookup_blob(dev, val);
> -		ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
> -		drm_property_blob_put(mode);
> -		return ret;
> -	} else if (property == config->degamma_lut_property) {
> -		ret = drm_atomic_replace_property_blob_from_id(dev,
> -					&state->degamma_lut,
> -					val,
> -					-1, sizeof(struct drm_color_lut),
> -					&replaced);
> -		state->color_mgmt_changed |= replaced;
> -		return ret;
> -	} else if (property == config->ctm_property) {
> -		ret = drm_atomic_replace_property_blob_from_id(dev,
> -					&state->ctm,
> -					val,
> -					sizeof(struct drm_color_ctm), -1,
> -					&replaced);
> -		state->color_mgmt_changed |= replaced;
> -		return ret;
> -	} else if (property == config->gamma_lut_property) {
> -		ret = drm_atomic_replace_property_blob_from_id(dev,
> -					&state->gamma_lut,
> -					val,
> -					-1, sizeof(struct drm_color_lut),
> -					&replaced);
> -		state->color_mgmt_changed |= replaced;
> -		return ret;
> -	} else if (property == config->prop_out_fence_ptr) {
> -		s32 __user *fence_ptr = u64_to_user_ptr(val);
> -
> -		if (!fence_ptr)
> -			return 0;
> -
> -		if (put_user(-1, fence_ptr))
> -			return -EFAULT;
> -
> -		set_out_fence_for_crtc(state->state, crtc, fence_ptr);
> -	} else if (crtc->funcs->atomic_set_property) {
> -		return crtc->funcs->atomic_set_property(crtc, state, property, val);
> -	} else {
> -		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
> -				 crtc->base.id, crtc->name,
> -				 property->base.id, property->name);
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
> -static int
> -drm_atomic_crtc_get_property(struct drm_crtc *crtc,
> -		const struct drm_crtc_state *state,
> -		struct drm_property *property, uint64_t *val)
> -{
> -	struct drm_device *dev = crtc->dev;
> -	struct drm_mode_config *config = &dev->mode_config;
> -
> -	if (property == config->prop_active)
> -		*val = state->active;
> -	else if (property == config->prop_mode_id)
> -		*val = (state->mode_blob) ? state->mode_blob->base.id : 0;
> -	else if (property == config->degamma_lut_property)
> -		*val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
> -	else if (property == config->ctm_property)
> -		*val = (state->ctm) ? state->ctm->base.id : 0;
> -	else if (property == config->gamma_lut_property)
> -		*val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
> -	else if (property == config->prop_out_fence_ptr)
> -		*val = 0;
> -	else if (crtc->funcs->atomic_get_property)
> -		return crtc->funcs->atomic_get_property(crtc, state, property, val);
> -	else
> -		return -EINVAL;
> -
> -	return 0;
> -}
> -
>  static int drm_atomic_crtc_check(struct drm_crtc *crtc,
>  		struct drm_crtc_state *state)
>  {
> @@ -761,144 +483,6 @@ drm_atomic_get_plane_state(struct drm_atomic_state *state,
>  }
>  EXPORT_SYMBOL(drm_atomic_get_plane_state);
>  
> -/**
> - * drm_atomic_plane_set_property - set property on plane
> - * @plane: the drm plane to set a property on
> - * @state: the state object to update with the new property value
> - * @property: the property to set
> - * @val: the new property value
> - *
> - * This function handles generic/core properties and calls out to driver's
> - * &drm_plane_funcs.atomic_set_property for driver properties.  To ensure
> - * consistent behavior you must call this function rather than the driver hook
> - * directly.
> - *
> - * RETURNS:
> - * Zero on success, error code on failure
> - */
> -static int drm_atomic_plane_set_property(struct drm_plane *plane,
> -		struct drm_plane_state *state, struct drm_property *property,
> -		uint64_t val)
> -{
> -	struct drm_device *dev = plane->dev;
> -	struct drm_mode_config *config = &dev->mode_config;
> -
> -	if (property == config->prop_fb_id) {
> -		struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> -		drm_atomic_set_fb_for_plane(state, fb);
> -		if (fb)
> -			drm_framebuffer_put(fb);
> -	} else if (property == config->prop_in_fence_fd) {
> -		if (state->fence)
> -			return -EINVAL;
> -
> -		if (U642I64(val) == -1)
> -			return 0;
> -
> -		state->fence = sync_file_get_fence(val);
> -		if (!state->fence)
> -			return -EINVAL;
> -
> -	} else if (property == config->prop_crtc_id) {
> -		struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> -		return drm_atomic_set_crtc_for_plane(state, crtc);
> -	} else if (property == config->prop_crtc_x) {
> -		state->crtc_x = U642I64(val);
> -	} else if (property == config->prop_crtc_y) {
> -		state->crtc_y = U642I64(val);
> -	} else if (property == config->prop_crtc_w) {
> -		state->crtc_w = val;
> -	} else if (property == config->prop_crtc_h) {
> -		state->crtc_h = val;
> -	} else if (property == config->prop_src_x) {
> -		state->src_x = val;
> -	} else if (property == config->prop_src_y) {
> -		state->src_y = val;
> -	} else if (property == config->prop_src_w) {
> -		state->src_w = val;
> -	} else if (property == config->prop_src_h) {
> -		state->src_h = val;
> -	} else if (property == plane->alpha_property) {
> -		state->alpha = val;
> -	} else if (property == plane->blend_mode_property) {
> -		state->pixel_blend_mode = val;
> -	} else if (property == plane->rotation_property) {
> -		if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
> -			DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
> -					 plane->base.id, plane->name, val);
> -			return -EINVAL;
> -		}
> -		state->rotation = val;
> -	} else if (property == plane->zpos_property) {
> -		state->zpos = val;
> -	} else if (property == plane->color_encoding_property) {
> -		state->color_encoding = val;
> -	} else if (property == plane->color_range_property) {
> -		state->color_range = val;
> -	} else if (plane->funcs->atomic_set_property) {
> -		return plane->funcs->atomic_set_property(plane, state,
> -				property, val);
> -	} else {
> -		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
> -				 plane->base.id, plane->name,
> -				 property->base.id, property->name);
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
> -static int
> -drm_atomic_plane_get_property(struct drm_plane *plane,
> -		const struct drm_plane_state *state,
> -		struct drm_property *property, uint64_t *val)
> -{
> -	struct drm_device *dev = plane->dev;
> -	struct drm_mode_config *config = &dev->mode_config;
> -
> -	if (property == config->prop_fb_id) {
> -		*val = (state->fb) ? state->fb->base.id : 0;
> -	} else if (property == config->prop_in_fence_fd) {
> -		*val = -1;
> -	} else if (property == config->prop_crtc_id) {
> -		*val = (state->crtc) ? state->crtc->base.id : 0;
> -	} else if (property == config->prop_crtc_x) {
> -		*val = I642U64(state->crtc_x);
> -	} else if (property == config->prop_crtc_y) {
> -		*val = I642U64(state->crtc_y);
> -	} else if (property == config->prop_crtc_w) {
> -		*val = state->crtc_w;
> -	} else if (property == config->prop_crtc_h) {
> -		*val = state->crtc_h;
> -	} else if (property == config->prop_src_x) {
> -		*val = state->src_x;
> -	} else if (property == config->prop_src_y) {
> -		*val = state->src_y;
> -	} else if (property == config->prop_src_w) {
> -		*val = state->src_w;
> -	} else if (property == config->prop_src_h) {
> -		*val = state->src_h;
> -	} else if (property == plane->alpha_property) {
> -		*val = state->alpha;
> -	} else if (property == plane->blend_mode_property) {
> -		*val = state->pixel_blend_mode;
> -	} else if (property == plane->rotation_property) {
> -		*val = state->rotation;
> -	} else if (property == plane->zpos_property) {
> -		*val = state->zpos;
> -	} else if (property == plane->color_encoding_property) {
> -		*val = state->color_encoding;
> -	} else if (property == plane->color_range_property) {
> -		*val = state->color_range;
> -	} else if (plane->funcs->atomic_get_property) {
> -		return plane->funcs->atomic_get_property(plane, state, property, val);
> -	} else {
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
>  static bool
>  plane_switching_crtc(struct drm_atomic_state *state,
>  		     struct drm_plane *plane,
> @@ -1238,129 +822,6 @@ drm_atomic_get_connector_state(struct drm_atomic_state *state,
>  }
>  EXPORT_SYMBOL(drm_atomic_get_connector_state);
>  
> -static struct drm_writeback_job *
> -drm_atomic_get_writeback_job(struct drm_connector_state *conn_state)
> -{
> -	WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
> -
> -	if (!conn_state->writeback_job)
> -		conn_state->writeback_job =
> -			kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL);
> -
> -	return conn_state->writeback_job;
> -}
> -
> -static int drm_atomic_set_writeback_fb_for_connector(
> -		struct drm_connector_state *conn_state,
> -		struct drm_framebuffer *fb)
> -{
> -	struct drm_writeback_job *job =
> -		drm_atomic_get_writeback_job(conn_state);
> -	if (!job)
> -		return -ENOMEM;
> -
> -	drm_framebuffer_assign(&job->fb, fb);
> -
> -	if (fb)
> -		DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
> -				 fb->base.id, conn_state);
> -	else
> -		DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
> -				 conn_state);
> -
> -	return 0;
> -}
> -
> -static int drm_atomic_connector_set_property(struct drm_connector *connector,
> -		struct drm_connector_state *state, struct drm_property *property,
> -		uint64_t val)
> -{
> -	struct drm_device *dev = connector->dev;
> -	struct drm_mode_config *config = &dev->mode_config;
> -
> -	if (property == config->prop_crtc_id) {
> -		struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> -		return drm_atomic_set_crtc_for_connector(state, crtc);
> -	} else if (property == config->dpms_property) {
> -		/* setting DPMS property requires special handling, which
> -		 * is done in legacy setprop path for us.  Disallow (for
> -		 * now?) atomic writes to DPMS property:
> -		 */
> -		return -EINVAL;
> -	} else if (property == config->tv_select_subconnector_property) {
> -		state->tv.subconnector = val;
> -	} else if (property == config->tv_left_margin_property) {
> -		state->tv.margins.left = val;
> -	} else if (property == config->tv_right_margin_property) {
> -		state->tv.margins.right = val;
> -	} else if (property == config->tv_top_margin_property) {
> -		state->tv.margins.top = val;
> -	} else if (property == config->tv_bottom_margin_property) {
> -		state->tv.margins.bottom = val;
> -	} else if (property == config->tv_mode_property) {
> -		state->tv.mode = val;
> -	} else if (property == config->tv_brightness_property) {
> -		state->tv.brightness = val;
> -	} else if (property == config->tv_contrast_property) {
> -		state->tv.contrast = val;
> -	} else if (property == config->tv_flicker_reduction_property) {
> -		state->tv.flicker_reduction = val;
> -	} else if (property == config->tv_overscan_property) {
> -		state->tv.overscan = val;
> -	} else if (property == config->tv_saturation_property) {
> -		state->tv.saturation = val;
> -	} else if (property == config->tv_hue_property) {
> -		state->tv.hue = val;
> -	} else if (property == config->link_status_property) {
> -		/* Never downgrade from GOOD to BAD on userspace's request here,
> -		 * only hw issues can do that.
> -		 *
> -		 * For an atomic property the userspace doesn't need to be able
> -		 * to understand all the properties, but needs to be able to
> -		 * restore the state it wants on VT switch. So if the userspace
> -		 * tries to change the link_status from GOOD to BAD, driver
> -		 * silently rejects it and returns a 0. This prevents userspace
> -		 * from accidently breaking  the display when it restores the
> -		 * state.
> -		 */
> -		if (state->link_status != DRM_LINK_STATUS_GOOD)
> -			state->link_status = val;
> -	} else if (property == config->aspect_ratio_property) {
> -		state->picture_aspect_ratio = val;
> -	} else if (property == config->content_type_property) {
> -		state->content_type = val;
> -	} else if (property == connector->scaling_mode_property) {
> -		state->scaling_mode = val;
> -	} else if (property == connector->content_protection_property) {
> -		if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> -			DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
> -			return -EINVAL;
> -		}
> -		state->content_protection = val;
> -	} else if (property == config->writeback_fb_id_property) {
> -		struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> -		int ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
> -		if (fb)
> -			drm_framebuffer_put(fb);
> -		return ret;
> -	} else if (property == config->writeback_out_fence_ptr_property) {
> -		s32 __user *fence_ptr = u64_to_user_ptr(val);
> -
> -		return set_out_fence_for_connector(state->state, connector,
> -						   fence_ptr);
> -	} else if (connector->funcs->atomic_set_property) {
> -		return connector->funcs->atomic_set_property(connector,
> -				state, property, val);
> -	} else {
> -		DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
> -				 connector->base.id, connector->name,
> -				 property->base.id, property->name);
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
>  static void drm_atomic_connector_print_state(struct drm_printer *p,
>  		const struct drm_connector_state *state)
>  {
> @@ -1377,281 +838,6 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
>  		connector->funcs->atomic_print_state(p, state);
>  }
>  
> -static int
> -drm_atomic_connector_get_property(struct drm_connector *connector,
> -		const struct drm_connector_state *state,
> -		struct drm_property *property, uint64_t *val)
> -{
> -	struct drm_device *dev = connector->dev;
> -	struct drm_mode_config *config = &dev->mode_config;
> -
> -	if (property == config->prop_crtc_id) {
> -		*val = (state->crtc) ? state->crtc->base.id : 0;
> -	} else if (property == config->dpms_property) {
> -		*val = connector->dpms;
> -	} else if (property == config->tv_select_subconnector_property) {
> -		*val = state->tv.subconnector;
> -	} else if (property == config->tv_left_margin_property) {
> -		*val = state->tv.margins.left;
> -	} else if (property == config->tv_right_margin_property) {
> -		*val = state->tv.margins.right;
> -	} else if (property == config->tv_top_margin_property) {
> -		*val = state->tv.margins.top;
> -	} else if (property == config->tv_bottom_margin_property) {
> -		*val = state->tv.margins.bottom;
> -	} else if (property == config->tv_mode_property) {
> -		*val = state->tv.mode;
> -	} else if (property == config->tv_brightness_property) {
> -		*val = state->tv.brightness;
> -	} else if (property == config->tv_contrast_property) {
> -		*val = state->tv.contrast;
> -	} else if (property == config->tv_flicker_reduction_property) {
> -		*val = state->tv.flicker_reduction;
> -	} else if (property == config->tv_overscan_property) {
> -		*val = state->tv.overscan;
> -	} else if (property == config->tv_saturation_property) {
> -		*val = state->tv.saturation;
> -	} else if (property == config->tv_hue_property) {
> -		*val = state->tv.hue;
> -	} else if (property == config->link_status_property) {
> -		*val = state->link_status;
> -	} else if (property == config->aspect_ratio_property) {
> -		*val = state->picture_aspect_ratio;
> -	} else if (property == config->content_type_property) {
> -		*val = state->content_type;
> -	} else if (property == connector->scaling_mode_property) {
> -		*val = state->scaling_mode;
> -	} else if (property == connector->content_protection_property) {
> -		*val = state->content_protection;
> -	} else if (property == config->writeback_fb_id_property) {
> -		/* Writeback framebuffer is one-shot, write and forget */
> -		*val = 0;
> -	} else if (property == config->writeback_out_fence_ptr_property) {
> -		*val = 0;
> -	} else if (connector->funcs->atomic_get_property) {
> -		return connector->funcs->atomic_get_property(connector,
> -				state, property, val);
> -	} else {
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
> -int drm_atomic_get_property(struct drm_mode_object *obj,
> -		struct drm_property *property, uint64_t *val)
> -{
> -	struct drm_device *dev = property->dev;
> -	int ret;
> -
> -	switch (obj->type) {
> -	case DRM_MODE_OBJECT_CONNECTOR: {
> -		struct drm_connector *connector = obj_to_connector(obj);
> -		WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
> -		ret = drm_atomic_connector_get_property(connector,
> -				connector->state, property, val);
> -		break;
> -	}
> -	case DRM_MODE_OBJECT_CRTC: {
> -		struct drm_crtc *crtc = obj_to_crtc(obj);
> -		WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
> -		ret = drm_atomic_crtc_get_property(crtc,
> -				crtc->state, property, val);
> -		break;
> -	}
> -	case DRM_MODE_OBJECT_PLANE: {
> -		struct drm_plane *plane = obj_to_plane(obj);
> -		WARN_ON(!drm_modeset_is_locked(&plane->mutex));
> -		ret = drm_atomic_plane_get_property(plane,
> -				plane->state, property, val);
> -		break;
> -	}
> -	default:
> -		ret = -EINVAL;
> -		break;
> -	}
> -
> -	return ret;
> -}
> -
> -/**
> - * drm_atomic_set_crtc_for_plane - set crtc for plane
> - * @plane_state: the plane whose incoming state to update
> - * @crtc: crtc to use for the plane
> - *
> - * Changing the assigned crtc for a plane requires us to grab the lock and state
> - * for the new crtc, as needed. This function takes care of all these details
> - * besides updating the pointer in the state object itself.
> - *
> - * Returns:
> - * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> - * then the w/w mutex code has detected a deadlock and the entire atomic
> - * sequence must be restarted. All other errors are fatal.
> - */
> -int
> -drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> -			      struct drm_crtc *crtc)
> -{
> -	struct drm_plane *plane = plane_state->plane;
> -	struct drm_crtc_state *crtc_state;
> -	/* Nothing to do for same crtc*/
> -	if (plane_state->crtc == crtc)
> -		return 0;
> -	if (plane_state->crtc) {
> -		crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> -						       plane_state->crtc);
> -		if (WARN_ON(IS_ERR(crtc_state)))
> -			return PTR_ERR(crtc_state);
> -
> -		crtc_state->plane_mask &= ~drm_plane_mask(plane);
> -	}
> -
> -	plane_state->crtc = crtc;
> -
> -	if (crtc) {
> -		crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> -						       crtc);
> -		if (IS_ERR(crtc_state))
> -			return PTR_ERR(crtc_state);
> -		crtc_state->plane_mask |= drm_plane_mask(plane);
> -	}
> -
> -	if (crtc)
> -		DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
> -				 plane->base.id, plane->name, plane_state,
> -				 crtc->base.id, crtc->name);
> -	else
> -		DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
> -				 plane->base.id, plane->name, plane_state);
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
> -
> -/**
> - * drm_atomic_set_fb_for_plane - set framebuffer for plane
> - * @plane_state: atomic state object for the plane
> - * @fb: fb to use for the plane
> - *
> - * Changing the assigned framebuffer for a plane requires us to grab a reference
> - * to the new fb and drop the reference to the old fb, if there is one. This
> - * function takes care of all these details besides updating the pointer in the
> - * state object itself.
> - */
> -void
> -drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> -			    struct drm_framebuffer *fb)
> -{
> -	struct drm_plane *plane = plane_state->plane;
> -
> -	if (fb)
> -		DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
> -				 fb->base.id, plane->base.id, plane->name,
> -				 plane_state);
> -	else
> -		DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
> -				 plane->base.id, plane->name, plane_state);
> -
> -	drm_framebuffer_assign(&plane_state->fb, fb);
> -}
> -EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
> -
> -/**
> - * drm_atomic_set_fence_for_plane - set fence for plane
> - * @plane_state: atomic state object for the plane
> - * @fence: dma_fence to use for the plane
> - *
> - * Helper to setup the plane_state fence in case it is not set yet.
> - * By using this drivers doesn't need to worry if the user choose
> - * implicit or explicit fencing.
> - *
> - * This function will not set the fence to the state if it was set
> - * via explicit fencing interfaces on the atomic ioctl. In that case it will
> - * drop the reference to the fence as we are not storing it anywhere.
> - * Otherwise, if &drm_plane_state.fence is not set this function we just set it
> - * with the received implicit fence. In both cases this function consumes a
> - * reference for @fence.
> - *
> - * This way explicit fencing can be used to overrule implicit fencing, which is
> - * important to make explicit fencing use-cases work: One example is using one
> - * buffer for 2 screens with different refresh rates. Implicit fencing will
> - * clamp rendering to the refresh rate of the slower screen, whereas explicit
> - * fence allows 2 independent render and display loops on a single buffer. If a
> - * driver allows obeys both implicit and explicit fences for plane updates, then
> - * it will break all the benefits of explicit fencing.
> - */
> -void
> -drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> -			       struct dma_fence *fence)
> -{
> -	if (plane_state->fence) {
> -		dma_fence_put(fence);
> -		return;
> -	}
> -
> -	plane_state->fence = fence;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
> -
> -/**
> - * drm_atomic_set_crtc_for_connector - set crtc for connector
> - * @conn_state: atomic state object for the connector
> - * @crtc: crtc to use for the connector
> - *
> - * Changing the assigned crtc for a connector requires us to grab the lock and
> - * state for the new crtc, as needed. This function takes care of all these
> - * details besides updating the pointer in the state object itself.
> - *
> - * Returns:
> - * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> - * then the w/w mutex code has detected a deadlock and the entire atomic
> - * sequence must be restarted. All other errors are fatal.
> - */
> -int
> -drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> -				  struct drm_crtc *crtc)
> -{
> -	struct drm_connector *connector = conn_state->connector;
> -	struct drm_crtc_state *crtc_state;
> -
> -	if (conn_state->crtc == crtc)
> -		return 0;
> -
> -	if (conn_state->crtc) {
> -		crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
> -							   conn_state->crtc);
> -
> -		crtc_state->connector_mask &=
> -			~drm_connector_mask(conn_state->connector);
> -
> -		drm_connector_put(conn_state->connector);
> -		conn_state->crtc = NULL;
> -	}
> -
> -	if (crtc) {
> -		crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
> -		if (IS_ERR(crtc_state))
> -			return PTR_ERR(crtc_state);
> -
> -		crtc_state->connector_mask |=
> -			drm_connector_mask(conn_state->connector);
> -
> -		drm_connector_get(conn_state->connector);
> -		conn_state->crtc = crtc;
> -
> -		DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
> -				 connector->base.id, connector->name,
> -				 conn_state, crtc->base.id, crtc->name);
> -	} else {
> -		DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
> -				 connector->base.id, connector->name,
> -				 conn_state);
> -	}
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
> -
>  /**
>   * drm_atomic_add_affected_connectors - add connectors for crtc
>   * @state: atomic state
> @@ -1916,7 +1102,7 @@ int drm_atomic_nonblocking_commit(struct drm_atomic_state *state)
>  }
>  EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
>  
> -static void drm_atomic_print_state(const struct drm_atomic_state *state)
> +void drm_atomic_print_state(const struct drm_atomic_state *state)
>  {
>  	struct drm_printer p = drm_info_printer(state->dev->dev);
>  	struct drm_plane *plane;
> @@ -2023,544 +1209,3 @@ int drm_atomic_debugfs_init(struct drm_minor *minor)
>  }
>  #endif
>  
> -/*
> - * The big monster ioctl
> - */
> -
> -static struct drm_pending_vblank_event *create_vblank_event(
> -		struct drm_crtc *crtc, uint64_t user_data)
> -{
> -	struct drm_pending_vblank_event *e = NULL;
> -
> -	e = kzalloc(sizeof *e, GFP_KERNEL);
> -	if (!e)
> -		return NULL;
> -
> -	e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
> -	e->event.base.length = sizeof(e->event);
> -	e->event.vbl.crtc_id = crtc->base.id;
> -	e->event.vbl.user_data = user_data;
> -
> -	return e;
> -}
> -
> -int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
> -				     struct drm_connector *connector,
> -				     int mode)
> -{
> -	struct drm_connector *tmp_connector;
> -	struct drm_connector_state *new_conn_state;
> -	struct drm_crtc *crtc;
> -	struct drm_crtc_state *crtc_state;
> -	int i, ret, old_mode = connector->dpms;
> -	bool active = false;
> -
> -	ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
> -			       state->acquire_ctx);
> -	if (ret)
> -		return ret;
> -
> -	if (mode != DRM_MODE_DPMS_ON)
> -		mode = DRM_MODE_DPMS_OFF;
> -	connector->dpms = mode;
> -
> -	crtc = connector->state->crtc;
> -	if (!crtc)
> -		goto out;
> -	ret = drm_atomic_add_affected_connectors(state, crtc);
> -	if (ret)
> -		goto out;
> -
> -	crtc_state = drm_atomic_get_crtc_state(state, crtc);
> -	if (IS_ERR(crtc_state)) {
> -		ret = PTR_ERR(crtc_state);
> -		goto out;
> -	}
> -
> -	for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
> -		if (new_conn_state->crtc != crtc)
> -			continue;
> -		if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
> -			active = true;
> -			break;
> -		}
> -	}
> -
> -	crtc_state->active = active;
> -	ret = drm_atomic_commit(state);
> -out:
> -	if (ret != 0)
> -		connector->dpms = old_mode;
> -	return ret;
> -}
> -
> -int drm_atomic_set_property(struct drm_atomic_state *state,
> -			    struct drm_mode_object *obj,
> -			    struct drm_property *prop,
> -			    uint64_t prop_value)
> -{
> -	struct drm_mode_object *ref;
> -	int ret;
> -
> -	if (!drm_property_change_valid_get(prop, prop_value, &ref))
> -		return -EINVAL;
> -
> -	switch (obj->type) {
> -	case DRM_MODE_OBJECT_CONNECTOR: {
> -		struct drm_connector *connector = obj_to_connector(obj);
> -		struct drm_connector_state *connector_state;
> -
> -		connector_state = drm_atomic_get_connector_state(state, connector);
> -		if (IS_ERR(connector_state)) {
> -			ret = PTR_ERR(connector_state);
> -			break;
> -		}
> -
> -		ret = drm_atomic_connector_set_property(connector,
> -				connector_state, prop, prop_value);
> -		break;
> -	}
> -	case DRM_MODE_OBJECT_CRTC: {
> -		struct drm_crtc *crtc = obj_to_crtc(obj);
> -		struct drm_crtc_state *crtc_state;
> -
> -		crtc_state = drm_atomic_get_crtc_state(state, crtc);
> -		if (IS_ERR(crtc_state)) {
> -			ret = PTR_ERR(crtc_state);
> -			break;
> -		}
> -
> -		ret = drm_atomic_crtc_set_property(crtc,
> -				crtc_state, prop, prop_value);
> -		break;
> -	}
> -	case DRM_MODE_OBJECT_PLANE: {
> -		struct drm_plane *plane = obj_to_plane(obj);
> -		struct drm_plane_state *plane_state;
> -
> -		plane_state = drm_atomic_get_plane_state(state, plane);
> -		if (IS_ERR(plane_state)) {
> -			ret = PTR_ERR(plane_state);
> -			break;
> -		}
> -
> -		ret = drm_atomic_plane_set_property(plane,
> -				plane_state, prop, prop_value);
> -		break;
> -	}
> -	default:
> -		ret = -EINVAL;
> -		break;
> -	}
> -
> -	drm_property_change_valid_put(prop, ref);
> -	return ret;
> -}
> -
> -/**
> - * DOC: explicit fencing properties
> - *
> - * Explicit fencing allows userspace to control the buffer synchronization
> - * between devices. A Fence or a group of fences are transfered to/from
> - * userspace using Sync File fds and there are two DRM properties for that.
> - * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
> - * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
> - *
> - * As a contrast, with implicit fencing the kernel keeps track of any
> - * ongoing rendering, and automatically ensures that the atomic update waits
> - * for any pending rendering to complete. For shared buffers represented with
> - * a &struct dma_buf this is tracked in &struct reservation_object.
> - * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
> - * whereas explicit fencing is what Android wants.
> - *
> - * "IN_FENCE_FD”:
> - *	Use this property to pass a fence that DRM should wait on before
> - *	proceeding with the Atomic Commit request and show the framebuffer for
> - *	the plane on the screen. The fence can be either a normal fence or a
> - *	merged one, the sync_file framework will handle both cases and use a
> - *	fence_array if a merged fence is received. Passing -1 here means no
> - *	fences to wait on.
> - *
> - *	If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
> - *	it will only check if the Sync File is a valid one.
> - *
> - *	On the driver side the fence is stored on the @fence parameter of
> - *	&struct drm_plane_state. Drivers which also support implicit fencing
> - *	should set the implicit fence using drm_atomic_set_fence_for_plane(),
> - *	to make sure there's consistent behaviour between drivers in precedence
> - *	of implicit vs. explicit fencing.
> - *
> - * "OUT_FENCE_PTR”:
> - *	Use this property to pass a file descriptor pointer to DRM. Once the
> - *	Atomic Commit request call returns OUT_FENCE_PTR will be filled with
> - *	the file descriptor number of a Sync File. This Sync File contains the
> - *	CRTC fence that will be signaled when all framebuffers present on the
> - *	Atomic Commit * request for that given CRTC are scanned out on the
> - *	screen.
> - *
> - *	The Atomic Commit request fails if a invalid pointer is passed. If the
> - *	Atomic Commit request fails for any other reason the out fence fd
> - *	returned will be -1. On a Atomic Commit with the
> - *	DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
> - *
> - *	Note that out-fences don't have a special interface to drivers and are
> - *	internally represented by a &struct drm_pending_vblank_event in struct
> - *	&drm_crtc_state, which is also used by the nonblocking atomic commit
> - *	helpers and for the DRM event handling for existing userspace.
> - */
> -
> -struct drm_out_fence_state {
> -	s32 __user *out_fence_ptr;
> -	struct sync_file *sync_file;
> -	int fd;
> -};
> -
> -static int setup_out_fence(struct drm_out_fence_state *fence_state,
> -			   struct dma_fence *fence)
> -{
> -	fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
> -	if (fence_state->fd < 0)
> -		return fence_state->fd;
> -
> -	if (put_user(fence_state->fd, fence_state->out_fence_ptr))
> -		return -EFAULT;
> -
> -	fence_state->sync_file = sync_file_create(fence);
> -	if (!fence_state->sync_file)
> -		return -ENOMEM;
> -
> -	return 0;
> -}
> -
> -static int prepare_signaling(struct drm_device *dev,
> -				  struct drm_atomic_state *state,
> -				  struct drm_mode_atomic *arg,
> -				  struct drm_file *file_priv,
> -				  struct drm_out_fence_state **fence_state,
> -				  unsigned int *num_fences)
> -{
> -	struct drm_crtc *crtc;
> -	struct drm_crtc_state *crtc_state;
> -	struct drm_connector *conn;
> -	struct drm_connector_state *conn_state;
> -	int i, c = 0, ret;
> -
> -	if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
> -		return 0;
> -
> -	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> -		s32 __user *fence_ptr;
> -
> -		fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
> -
> -		if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
> -			struct drm_pending_vblank_event *e;
> -
> -			e = create_vblank_event(crtc, arg->user_data);
> -			if (!e)
> -				return -ENOMEM;
> -
> -			crtc_state->event = e;
> -		}
> -
> -		if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
> -			struct drm_pending_vblank_event *e = crtc_state->event;
> -
> -			if (!file_priv)
> -				continue;
> -
> -			ret = drm_event_reserve_init(dev, file_priv, &e->base,
> -						     &e->event.base);
> -			if (ret) {
> -				kfree(e);
> -				crtc_state->event = NULL;
> -				return ret;
> -			}
> -		}
> -
> -		if (fence_ptr) {
> -			struct dma_fence *fence;
> -			struct drm_out_fence_state *f;
> -
> -			f = krealloc(*fence_state, sizeof(**fence_state) *
> -				     (*num_fences + 1), GFP_KERNEL);
> -			if (!f)
> -				return -ENOMEM;
> -
> -			memset(&f[*num_fences], 0, sizeof(*f));
> -
> -			f[*num_fences].out_fence_ptr = fence_ptr;
> -			*fence_state = f;
> -
> -			fence = drm_crtc_create_fence(crtc);
> -			if (!fence)
> -				return -ENOMEM;
> -
> -			ret = setup_out_fence(&f[(*num_fences)++], fence);
> -			if (ret) {
> -				dma_fence_put(fence);
> -				return ret;
> -			}
> -
> -			crtc_state->event->base.fence = fence;
> -		}
> -
> -		c++;
> -	}
> -
> -	for_each_new_connector_in_state(state, conn, conn_state, i) {
> -		struct drm_writeback_connector *wb_conn;
> -		struct drm_writeback_job *job;
> -		struct drm_out_fence_state *f;
> -		struct dma_fence *fence;
> -		s32 __user *fence_ptr;
> -
> -		fence_ptr = get_out_fence_for_connector(state, conn);
> -		if (!fence_ptr)
> -			continue;
> -
> -		job = drm_atomic_get_writeback_job(conn_state);
> -		if (!job)
> -			return -ENOMEM;
> -
> -		f = krealloc(*fence_state, sizeof(**fence_state) *
> -			     (*num_fences + 1), GFP_KERNEL);
> -		if (!f)
> -			return -ENOMEM;
> -
> -		memset(&f[*num_fences], 0, sizeof(*f));
> -
> -		f[*num_fences].out_fence_ptr = fence_ptr;
> -		*fence_state = f;
> -
> -		wb_conn = drm_connector_to_writeback(conn);
> -		fence = drm_writeback_get_out_fence(wb_conn);
> -		if (!fence)
> -			return -ENOMEM;
> -
> -		ret = setup_out_fence(&f[(*num_fences)++], fence);
> -		if (ret) {
> -			dma_fence_put(fence);
> -			return ret;
> -		}
> -
> -		job->out_fence = fence;
> -	}
> -
> -	/*
> -	 * Having this flag means user mode pends on event which will never
> -	 * reach due to lack of at least one CRTC for signaling
> -	 */
> -	if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> -		return -EINVAL;
> -
> -	return 0;
> -}
> -
> -static void complete_signaling(struct drm_device *dev,
> -			       struct drm_atomic_state *state,
> -			       struct drm_out_fence_state *fence_state,
> -			       unsigned int num_fences,
> -			       bool install_fds)
> -{
> -	struct drm_crtc *crtc;
> -	struct drm_crtc_state *crtc_state;
> -	int i;
> -
> -	if (install_fds) {
> -		for (i = 0; i < num_fences; i++)
> -			fd_install(fence_state[i].fd,
> -				   fence_state[i].sync_file->file);
> -
> -		kfree(fence_state);
> -		return;
> -	}
> -
> -	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> -		struct drm_pending_vblank_event *event = crtc_state->event;
> -		/*
> -		 * Free the allocated event. drm_atomic_helper_setup_commit
> -		 * can allocate an event too, so only free it if it's ours
> -		 * to prevent a double free in drm_atomic_state_clear.
> -		 */
> -		if (event && (event->base.fence || event->base.file_priv)) {
> -			drm_event_cancel_free(dev, &event->base);
> -			crtc_state->event = NULL;
> -		}
> -	}
> -
> -	if (!fence_state)
> -		return;
> -
> -	for (i = 0; i < num_fences; i++) {
> -		if (fence_state[i].sync_file)
> -			fput(fence_state[i].sync_file->file);
> -		if (fence_state[i].fd >= 0)
> -			put_unused_fd(fence_state[i].fd);
> -
> -		/* If this fails log error to the user */
> -		if (fence_state[i].out_fence_ptr &&
> -		    put_user(-1, fence_state[i].out_fence_ptr))
> -			DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
> -	}
> -
> -	kfree(fence_state);
> -}
> -
> -int drm_mode_atomic_ioctl(struct drm_device *dev,
> -			  void *data, struct drm_file *file_priv)
> -{
> -	struct drm_mode_atomic *arg = data;
> -	uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
> -	uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
> -	uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
> -	uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
> -	unsigned int copied_objs, copied_props;
> -	struct drm_atomic_state *state;
> -	struct drm_modeset_acquire_ctx ctx;
> -	struct drm_out_fence_state *fence_state;
> -	int ret = 0;
> -	unsigned int i, j, num_fences;
> -
> -	/* disallow for drivers not supporting atomic: */
> -	if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
> -		return -EINVAL;
> -
> -	/* disallow for userspace that has not enabled atomic cap (even
> -	 * though this may be a bit overkill, since legacy userspace
> -	 * wouldn't know how to call this ioctl)
> -	 */
> -	if (!file_priv->atomic)
> -		return -EINVAL;
> -
> -	if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
> -		return -EINVAL;
> -
> -	if (arg->reserved)
> -		return -EINVAL;
> -
> -	if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
> -			!dev->mode_config.async_page_flip)
> -		return -EINVAL;
> -
> -	/* can't test and expect an event at the same time. */
> -	if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
> -			(arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> -		return -EINVAL;
> -
> -	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
> -
> -	state = drm_atomic_state_alloc(dev);
> -	if (!state)
> -		return -ENOMEM;
> -
> -	state->acquire_ctx = &ctx;
> -	state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
> -
> -retry:
> -	copied_objs = 0;
> -	copied_props = 0;
> -	fence_state = NULL;
> -	num_fences = 0;
> -
> -	for (i = 0; i < arg->count_objs; i++) {
> -		uint32_t obj_id, count_props;
> -		struct drm_mode_object *obj;
> -
> -		if (get_user(obj_id, objs_ptr + copied_objs)) {
> -			ret = -EFAULT;
> -			goto out;
> -		}
> -
> -		obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
> -		if (!obj) {
> -			ret = -ENOENT;
> -			goto out;
> -		}
> -
> -		if (!obj->properties) {
> -			drm_mode_object_put(obj);
> -			ret = -ENOENT;
> -			goto out;
> -		}
> -
> -		if (get_user(count_props, count_props_ptr + copied_objs)) {
> -			drm_mode_object_put(obj);
> -			ret = -EFAULT;
> -			goto out;
> -		}
> -
> -		copied_objs++;
> -
> -		for (j = 0; j < count_props; j++) {
> -			uint32_t prop_id;
> -			uint64_t prop_value;
> -			struct drm_property *prop;
> -
> -			if (get_user(prop_id, props_ptr + copied_props)) {
> -				drm_mode_object_put(obj);
> -				ret = -EFAULT;
> -				goto out;
> -			}
> -
> -			prop = drm_mode_obj_find_prop_id(obj, prop_id);
> -			if (!prop) {
> -				drm_mode_object_put(obj);
> -				ret = -ENOENT;
> -				goto out;
> -			}
> -
> -			if (copy_from_user(&prop_value,
> -					   prop_values_ptr + copied_props,
> -					   sizeof(prop_value))) {
> -				drm_mode_object_put(obj);
> -				ret = -EFAULT;
> -				goto out;
> -			}
> -
> -			ret = drm_atomic_set_property(state, obj, prop,
> -						      prop_value);
> -			if (ret) {
> -				drm_mode_object_put(obj);
> -				goto out;
> -			}
> -
> -			copied_props++;
> -		}
> -
> -		drm_mode_object_put(obj);
> -	}
> -
> -	ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
> -				&num_fences);
> -	if (ret)
> -		goto out;
> -
> -	if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
> -		ret = drm_atomic_check_only(state);
> -	} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
> -		ret = drm_atomic_nonblocking_commit(state);
> -	} else {
> -		if (unlikely(drm_debug & DRM_UT_STATE))
> -			drm_atomic_print_state(state);
> -
> -		ret = drm_atomic_commit(state);
> -	}
> -
> -out:
> -	complete_signaling(dev, state, fence_state, num_fences, !ret);
> -
> -	if (ret == -EDEADLK) {
> -		drm_atomic_state_clear(state);
> -		ret = drm_modeset_backoff(&ctx);
> -		if (!ret)
> -			goto retry;
> -	}
> -
> -	drm_atomic_state_put(state);
> -
> -	drm_modeset_drop_locks(&ctx);
> -	drm_modeset_acquire_fini(&ctx);
> -
> -	return ret;
> -}
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index daa04d29f8cc..8469a7e9afe3 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -27,6 +27,7 @@
>  
>  #include <drm/drmP.h>
>  #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <drm/drm_plane_helper.h>
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_atomic_helper.h>
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> new file mode 100644
> index 000000000000..26690a664ec6
> --- /dev/null
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -0,0 +1,1393 @@
> +/*
> + * Copyright (C) 2014 Red Hat
> + * Copyright (C) 2014 Intel Corp.
> + * Copyright (C) 2018 Intel Corp.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.

Maybe start a new file with SPDX identifier?

I like the idea of this split...

Acked-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

> + *
> + * Authors:
> + * Rob Clark <robdclark@xxxxxxxxx>
> + * Daniel Vetter <daniel.vetter@xxxxxxxx>
> + */
> +
> +#include <drm/drm_atomic_uapi.h>
> +#include <drm/drm_atomic.h>
> +#include <drm/drm_print.h>
> +#include <drm/drm_drv.h>
> +#include <drm/drm_writeback.h>
> +#include <drm/drm_vblank.h>
> +
> +#include <linux/dma-fence.h>
> +#include <linux/uaccess.h>
> +#include <linux/sync_file.h>
> +#include <linux/file.h>
> +
> +#include "drm_crtc_internal.h"
> +
> +/**
> + * DOC: overview
> + *
> + * This file contains the marshalling and demarshalling glue for the atomic UAPI
> + * in all it's form: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
> + * SET_PROPERTY IOCTls. Plus interface functions for compatibility helpers and
> + * drivers which have special needs to construct their own atomic updates, e.g.
> + * for load detect or similiar.
> + */
> +
> +/**
> + * drm_atomic_set_mode_for_crtc - set mode for CRTC
> + * @state: the CRTC whose incoming state to update
> + * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
> + *
> + * Set a mode (originating from the kernel) on the desired CRTC state and update
> + * the enable property.
> + *
> + * RETURNS:
> + * Zero on success, error code on failure. Cannot return -EDEADLK.
> + */
> +int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> +				 const struct drm_display_mode *mode)
> +{
> +	struct drm_crtc *crtc = state->crtc;
> +	struct drm_mode_modeinfo umode;
> +
> +	/* Early return for no change. */
> +	if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
> +		return 0;
> +
> +	drm_property_blob_put(state->mode_blob);
> +	state->mode_blob = NULL;
> +
> +	if (mode) {
> +		drm_mode_convert_to_umode(&umode, mode);
> +		state->mode_blob =
> +			drm_property_create_blob(state->crtc->dev,
> +		                                 sizeof(umode),
> +		                                 &umode);
> +		if (IS_ERR(state->mode_blob))
> +			return PTR_ERR(state->mode_blob);
> +
> +		drm_mode_copy(&state->mode, mode);
> +		state->enable = true;
> +		DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> +				 mode->name, crtc->base.id, crtc->name, state);
> +	} else {
> +		memset(&state->mode, 0, sizeof(state->mode));
> +		state->enable = false;
> +		DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> +				 crtc->base.id, crtc->name, state);
> +	}
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
> +
> +/**
> + * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
> + * @state: the CRTC whose incoming state to update
> + * @blob: pointer to blob property to use for mode
> + *
> + * Set a mode (originating from a blob property) on the desired CRTC state.
> + * This function will take a reference on the blob property for the CRTC state,
> + * and release the reference held on the state's existing mode property, if any
> + * was set.
> + *
> + * RETURNS:
> + * Zero on success, error code on failure. Cannot return -EDEADLK.
> + */
> +int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> +                                      struct drm_property_blob *blob)
> +{
> +	struct drm_crtc *crtc = state->crtc;
> +
> +	if (blob == state->mode_blob)
> +		return 0;
> +
> +	drm_property_blob_put(state->mode_blob);
> +	state->mode_blob = NULL;
> +
> +	memset(&state->mode, 0, sizeof(state->mode));
> +
> +	if (blob) {
> +		int ret;
> +
> +		if (blob->length != sizeof(struct drm_mode_modeinfo)) {
> +			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
> +					 crtc->base.id, crtc->name,
> +					 blob->length);
> +			return -EINVAL;
> +		}
> +
> +		ret = drm_mode_convert_umode(crtc->dev,
> +					     &state->mode, blob->data);
> +		if (ret) {
> +			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
> +					 crtc->base.id, crtc->name,
> +					 ret, drm_get_mode_status_name(state->mode.status));
> +			drm_mode_debug_printmodeline(&state->mode);
> +			return -EINVAL;
> +		}
> +
> +		state->mode_blob = drm_property_blob_get(blob);
> +		state->enable = true;
> +		DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> +				 state->mode.name, crtc->base.id, crtc->name,
> +				 state);
> +	} else {
> +		state->enable = false;
> +		DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> +				 crtc->base.id, crtc->name, state);
> +	}
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
> +
> +/**
> + * drm_atomic_set_crtc_for_plane - set crtc for plane
> + * @plane_state: the plane whose incoming state to update
> + * @crtc: crtc to use for the plane
> + *
> + * Changing the assigned crtc for a plane requires us to grab the lock and state
> + * for the new crtc, as needed. This function takes care of all these details
> + * besides updating the pointer in the state object itself.
> + *
> + * Returns:
> + * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> + * then the w/w mutex code has detected a deadlock and the entire atomic
> + * sequence must be restarted. All other errors are fatal.
> + */
> +int
> +drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> +			      struct drm_crtc *crtc)
> +{
> +	struct drm_plane *plane = plane_state->plane;
> +	struct drm_crtc_state *crtc_state;
> +	/* Nothing to do for same crtc*/
> +	if (plane_state->crtc == crtc)
> +		return 0;
> +	if (plane_state->crtc) {
> +		crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> +						       plane_state->crtc);
> +		if (WARN_ON(IS_ERR(crtc_state)))
> +			return PTR_ERR(crtc_state);
> +
> +		crtc_state->plane_mask &= ~drm_plane_mask(plane);
> +	}
> +
> +	plane_state->crtc = crtc;
> +
> +	if (crtc) {
> +		crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> +						       crtc);
> +		if (IS_ERR(crtc_state))
> +			return PTR_ERR(crtc_state);
> +		crtc_state->plane_mask |= drm_plane_mask(plane);
> +	}
> +
> +	if (crtc)
> +		DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
> +				 plane->base.id, plane->name, plane_state,
> +				 crtc->base.id, crtc->name);
> +	else
> +		DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
> +				 plane->base.id, plane->name, plane_state);
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
> +
> +/**
> + * drm_atomic_set_fb_for_plane - set framebuffer for plane
> + * @plane_state: atomic state object for the plane
> + * @fb: fb to use for the plane
> + *
> + * Changing the assigned framebuffer for a plane requires us to grab a reference
> + * to the new fb and drop the reference to the old fb, if there is one. This
> + * function takes care of all these details besides updating the pointer in the
> + * state object itself.
> + */
> +void
> +drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> +			    struct drm_framebuffer *fb)
> +{
> +	struct drm_plane *plane = plane_state->plane;
> +
> +	if (fb)
> +		DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
> +				 fb->base.id, plane->base.id, plane->name,
> +				 plane_state);
> +	else
> +		DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
> +				 plane->base.id, plane->name, plane_state);
> +
> +	drm_framebuffer_assign(&plane_state->fb, fb);
> +}
> +EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
> +
> +/**
> + * drm_atomic_set_fence_for_plane - set fence for plane
> + * @plane_state: atomic state object for the plane
> + * @fence: dma_fence to use for the plane
> + *
> + * Helper to setup the plane_state fence in case it is not set yet.
> + * By using this drivers doesn't need to worry if the user choose
> + * implicit or explicit fencing.
> + *
> + * This function will not set the fence to the state if it was set
> + * via explicit fencing interfaces on the atomic ioctl. In that case it will
> + * drop the reference to the fence as we are not storing it anywhere.
> + * Otherwise, if &drm_plane_state.fence is not set this function we just set it
> + * with the received implicit fence. In both cases this function consumes a
> + * reference for @fence.
> + *
> + * This way explicit fencing can be used to overrule implicit fencing, which is
> + * important to make explicit fencing use-cases work: One example is using one
> + * buffer for 2 screens with different refresh rates. Implicit fencing will
> + * clamp rendering to the refresh rate of the slower screen, whereas explicit
> + * fence allows 2 independent render and display loops on a single buffer. If a
> + * driver allows obeys both implicit and explicit fences for plane updates, then
> + * it will break all the benefits of explicit fencing.
> + */
> +void
> +drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> +			       struct dma_fence *fence)
> +{
> +	if (plane_state->fence) {
> +		dma_fence_put(fence);
> +		return;
> +	}
> +
> +	plane_state->fence = fence;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
> +
> +/**
> + * drm_atomic_set_crtc_for_connector - set crtc for connector
> + * @conn_state: atomic state object for the connector
> + * @crtc: crtc to use for the connector
> + *
> + * Changing the assigned crtc for a connector requires us to grab the lock and
> + * state for the new crtc, as needed. This function takes care of all these
> + * details besides updating the pointer in the state object itself.
> + *
> + * Returns:
> + * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> + * then the w/w mutex code has detected a deadlock and the entire atomic
> + * sequence must be restarted. All other errors are fatal.
> + */
> +int
> +drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> +				  struct drm_crtc *crtc)
> +{
> +	struct drm_connector *connector = conn_state->connector;
> +	struct drm_crtc_state *crtc_state;
> +
> +	if (conn_state->crtc == crtc)
> +		return 0;
> +
> +	if (conn_state->crtc) {
> +		crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
> +							   conn_state->crtc);
> +
> +		crtc_state->connector_mask &=
> +			~drm_connector_mask(conn_state->connector);
> +
> +		drm_connector_put(conn_state->connector);
> +		conn_state->crtc = NULL;
> +	}
> +
> +	if (crtc) {
> +		crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
> +		if (IS_ERR(crtc_state))
> +			return PTR_ERR(crtc_state);
> +
> +		crtc_state->connector_mask |=
> +			drm_connector_mask(conn_state->connector);
> +
> +		drm_connector_get(conn_state->connector);
> +		conn_state->crtc = crtc;
> +
> +		DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
> +				 connector->base.id, connector->name,
> +				 conn_state, crtc->base.id, crtc->name);
> +	} else {
> +		DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
> +				 connector->base.id, connector->name,
> +				 conn_state);
> +	}
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
> +
> +static void set_out_fence_for_crtc(struct drm_atomic_state *state,
> +				   struct drm_crtc *crtc, s32 __user *fence_ptr)
> +{
> +	state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
> +}
> +
> +static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
> +					  struct drm_crtc *crtc)
> +{
> +	s32 __user *fence_ptr;
> +
> +	fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
> +	state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
> +
> +	return fence_ptr;
> +}
> +
> +static int set_out_fence_for_connector(struct drm_atomic_state *state,
> +					struct drm_connector *connector,
> +					s32 __user *fence_ptr)
> +{
> +	unsigned int index = drm_connector_index(connector);
> +
> +	if (!fence_ptr)
> +		return 0;
> +
> +	if (put_user(-1, fence_ptr))
> +		return -EFAULT;
> +
> +	state->connectors[index].out_fence_ptr = fence_ptr;
> +
> +	return 0;
> +}
> +
> +static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
> +					       struct drm_connector *connector)
> +{
> +	unsigned int index = drm_connector_index(connector);
> +	s32 __user *fence_ptr;
> +
> +	fence_ptr = state->connectors[index].out_fence_ptr;
> +	state->connectors[index].out_fence_ptr = NULL;
> +
> +	return fence_ptr;
> +}
> +
> +static int
> +drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
> +					 struct drm_property_blob **blob,
> +					 uint64_t blob_id,
> +					 ssize_t expected_size,
> +					 ssize_t expected_elem_size,
> +					 bool *replaced)
> +{
> +	struct drm_property_blob *new_blob = NULL;
> +
> +	if (blob_id != 0) {
> +		new_blob = drm_property_lookup_blob(dev, blob_id);
> +		if (new_blob == NULL)
> +			return -EINVAL;
> +
> +		if (expected_size > 0 &&
> +		    new_blob->length != expected_size) {
> +			drm_property_blob_put(new_blob);
> +			return -EINVAL;
> +		}
> +		if (expected_elem_size > 0 &&
> +		    new_blob->length % expected_elem_size != 0) {
> +			drm_property_blob_put(new_blob);
> +			return -EINVAL;
> +		}
> +	}
> +
> +	*replaced |= drm_property_replace_blob(blob, new_blob);
> +	drm_property_blob_put(new_blob);
> +
> +	return 0;
> +}
> +
> +static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
> +		struct drm_crtc_state *state, struct drm_property *property,
> +		uint64_t val)
> +{
> +	struct drm_device *dev = crtc->dev;
> +	struct drm_mode_config *config = &dev->mode_config;
> +	bool replaced = false;
> +	int ret;
> +
> +	if (property == config->prop_active)
> +		state->active = val;
> +	else if (property == config->prop_mode_id) {
> +		struct drm_property_blob *mode =
> +			drm_property_lookup_blob(dev, val);
> +		ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
> +		drm_property_blob_put(mode);
> +		return ret;
> +	} else if (property == config->degamma_lut_property) {
> +		ret = drm_atomic_replace_property_blob_from_id(dev,
> +					&state->degamma_lut,
> +					val,
> +					-1, sizeof(struct drm_color_lut),
> +					&replaced);
> +		state->color_mgmt_changed |= replaced;
> +		return ret;
> +	} else if (property == config->ctm_property) {
> +		ret = drm_atomic_replace_property_blob_from_id(dev,
> +					&state->ctm,
> +					val,
> +					sizeof(struct drm_color_ctm), -1,
> +					&replaced);
> +		state->color_mgmt_changed |= replaced;
> +		return ret;
> +	} else if (property == config->gamma_lut_property) {
> +		ret = drm_atomic_replace_property_blob_from_id(dev,
> +					&state->gamma_lut,
> +					val,
> +					-1, sizeof(struct drm_color_lut),
> +					&replaced);
> +		state->color_mgmt_changed |= replaced;
> +		return ret;
> +	} else if (property == config->prop_out_fence_ptr) {
> +		s32 __user *fence_ptr = u64_to_user_ptr(val);
> +
> +		if (!fence_ptr)
> +			return 0;
> +
> +		if (put_user(-1, fence_ptr))
> +			return -EFAULT;
> +
> +		set_out_fence_for_crtc(state->state, crtc, fence_ptr);
> +	} else if (crtc->funcs->atomic_set_property) {
> +		return crtc->funcs->atomic_set_property(crtc, state, property, val);
> +	} else {
> +		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
> +				 crtc->base.id, crtc->name,
> +				 property->base.id, property->name);
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static int
> +drm_atomic_crtc_get_property(struct drm_crtc *crtc,
> +		const struct drm_crtc_state *state,
> +		struct drm_property *property, uint64_t *val)
> +{
> +	struct drm_device *dev = crtc->dev;
> +	struct drm_mode_config *config = &dev->mode_config;
> +
> +	if (property == config->prop_active)
> +		*val = state->active;
> +	else if (property == config->prop_mode_id)
> +		*val = (state->mode_blob) ? state->mode_blob->base.id : 0;
> +	else if (property == config->degamma_lut_property)
> +		*val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
> +	else if (property == config->ctm_property)
> +		*val = (state->ctm) ? state->ctm->base.id : 0;
> +	else if (property == config->gamma_lut_property)
> +		*val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
> +	else if (property == config->prop_out_fence_ptr)
> +		*val = 0;
> +	else if (crtc->funcs->atomic_get_property)
> +		return crtc->funcs->atomic_get_property(crtc, state, property, val);
> +	else
> +		return -EINVAL;
> +
> +	return 0;
> +}
> +
> +static int drm_atomic_plane_set_property(struct drm_plane *plane,
> +		struct drm_plane_state *state, struct drm_property *property,
> +		uint64_t val)
> +{
> +	struct drm_device *dev = plane->dev;
> +	struct drm_mode_config *config = &dev->mode_config;
> +
> +	if (property == config->prop_fb_id) {
> +		struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> +		drm_atomic_set_fb_for_plane(state, fb);
> +		if (fb)
> +			drm_framebuffer_put(fb);
> +	} else if (property == config->prop_in_fence_fd) {
> +		if (state->fence)
> +			return -EINVAL;
> +
> +		if (U642I64(val) == -1)
> +			return 0;
> +
> +		state->fence = sync_file_get_fence(val);
> +		if (!state->fence)
> +			return -EINVAL;
> +
> +	} else if (property == config->prop_crtc_id) {
> +		struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> +		return drm_atomic_set_crtc_for_plane(state, crtc);
> +	} else if (property == config->prop_crtc_x) {
> +		state->crtc_x = U642I64(val);
> +	} else if (property == config->prop_crtc_y) {
> +		state->crtc_y = U642I64(val);
> +	} else if (property == config->prop_crtc_w) {
> +		state->crtc_w = val;
> +	} else if (property == config->prop_crtc_h) {
> +		state->crtc_h = val;
> +	} else if (property == config->prop_src_x) {
> +		state->src_x = val;
> +	} else if (property == config->prop_src_y) {
> +		state->src_y = val;
> +	} else if (property == config->prop_src_w) {
> +		state->src_w = val;
> +	} else if (property == config->prop_src_h) {
> +		state->src_h = val;
> +	} else if (property == plane->alpha_property) {
> +		state->alpha = val;
> +	} else if (property == plane->blend_mode_property) {
> +		state->pixel_blend_mode = val;
> +	} else if (property == plane->rotation_property) {
> +		if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
> +			DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
> +					 plane->base.id, plane->name, val);
> +			return -EINVAL;
> +		}
> +		state->rotation = val;
> +	} else if (property == plane->zpos_property) {
> +		state->zpos = val;
> +	} else if (property == plane->color_encoding_property) {
> +		state->color_encoding = val;
> +	} else if (property == plane->color_range_property) {
> +		state->color_range = val;
> +	} else if (plane->funcs->atomic_set_property) {
> +		return plane->funcs->atomic_set_property(plane, state,
> +				property, val);
> +	} else {
> +		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
> +				 plane->base.id, plane->name,
> +				 property->base.id, property->name);
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static int
> +drm_atomic_plane_get_property(struct drm_plane *plane,
> +		const struct drm_plane_state *state,
> +		struct drm_property *property, uint64_t *val)
> +{
> +	struct drm_device *dev = plane->dev;
> +	struct drm_mode_config *config = &dev->mode_config;
> +
> +	if (property == config->prop_fb_id) {
> +		*val = (state->fb) ? state->fb->base.id : 0;
> +	} else if (property == config->prop_in_fence_fd) {
> +		*val = -1;
> +	} else if (property == config->prop_crtc_id) {
> +		*val = (state->crtc) ? state->crtc->base.id : 0;
> +	} else if (property == config->prop_crtc_x) {
> +		*val = I642U64(state->crtc_x);
> +	} else if (property == config->prop_crtc_y) {
> +		*val = I642U64(state->crtc_y);
> +	} else if (property == config->prop_crtc_w) {
> +		*val = state->crtc_w;
> +	} else if (property == config->prop_crtc_h) {
> +		*val = state->crtc_h;
> +	} else if (property == config->prop_src_x) {
> +		*val = state->src_x;
> +	} else if (property == config->prop_src_y) {
> +		*val = state->src_y;
> +	} else if (property == config->prop_src_w) {
> +		*val = state->src_w;
> +	} else if (property == config->prop_src_h) {
> +		*val = state->src_h;
> +	} else if (property == plane->alpha_property) {
> +		*val = state->alpha;
> +	} else if (property == plane->blend_mode_property) {
> +		*val = state->pixel_blend_mode;
> +	} else if (property == plane->rotation_property) {
> +		*val = state->rotation;
> +	} else if (property == plane->zpos_property) {
> +		*val = state->zpos;
> +	} else if (property == plane->color_encoding_property) {
> +		*val = state->color_encoding;
> +	} else if (property == plane->color_range_property) {
> +		*val = state->color_range;
> +	} else if (plane->funcs->atomic_get_property) {
> +		return plane->funcs->atomic_get_property(plane, state, property, val);
> +	} else {
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static struct drm_writeback_job *
> +drm_atomic_get_writeback_job(struct drm_connector_state *conn_state)
> +{
> +	WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
> +
> +	if (!conn_state->writeback_job)
> +		conn_state->writeback_job =
> +			kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL);
> +
> +	return conn_state->writeback_job;
> +}
> +
> +static int drm_atomic_set_writeback_fb_for_connector(
> +		struct drm_connector_state *conn_state,
> +		struct drm_framebuffer *fb)
> +{
> +	struct drm_writeback_job *job =
> +		drm_atomic_get_writeback_job(conn_state);
> +	if (!job)
> +		return -ENOMEM;
> +
> +	drm_framebuffer_assign(&job->fb, fb);
> +
> +	if (fb)
> +		DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
> +				 fb->base.id, conn_state);
> +	else
> +		DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
> +				 conn_state);
> +
> +	return 0;
> +}
> +
> +static int drm_atomic_connector_set_property(struct drm_connector *connector,
> +		struct drm_connector_state *state, struct drm_property *property,
> +		uint64_t val)
> +{
> +	struct drm_device *dev = connector->dev;
> +	struct drm_mode_config *config = &dev->mode_config;
> +
> +	if (property == config->prop_crtc_id) {
> +		struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> +		return drm_atomic_set_crtc_for_connector(state, crtc);
> +	} else if (property == config->dpms_property) {
> +		/* setting DPMS property requires special handling, which
> +		 * is done in legacy setprop path for us.  Disallow (for
> +		 * now?) atomic writes to DPMS property:
> +		 */
> +		return -EINVAL;
> +	} else if (property == config->tv_select_subconnector_property) {
> +		state->tv.subconnector = val;
> +	} else if (property == config->tv_left_margin_property) {
> +		state->tv.margins.left = val;
> +	} else if (property == config->tv_right_margin_property) {
> +		state->tv.margins.right = val;
> +	} else if (property == config->tv_top_margin_property) {
> +		state->tv.margins.top = val;
> +	} else if (property == config->tv_bottom_margin_property) {
> +		state->tv.margins.bottom = val;
> +	} else if (property == config->tv_mode_property) {
> +		state->tv.mode = val;
> +	} else if (property == config->tv_brightness_property) {
> +		state->tv.brightness = val;
> +	} else if (property == config->tv_contrast_property) {
> +		state->tv.contrast = val;
> +	} else if (property == config->tv_flicker_reduction_property) {
> +		state->tv.flicker_reduction = val;
> +	} else if (property == config->tv_overscan_property) {
> +		state->tv.overscan = val;
> +	} else if (property == config->tv_saturation_property) {
> +		state->tv.saturation = val;
> +	} else if (property == config->tv_hue_property) {
> +		state->tv.hue = val;
> +	} else if (property == config->link_status_property) {
> +		/* Never downgrade from GOOD to BAD on userspace's request here,
> +		 * only hw issues can do that.
> +		 *
> +		 * For an atomic property the userspace doesn't need to be able
> +		 * to understand all the properties, but needs to be able to
> +		 * restore the state it wants on VT switch. So if the userspace
> +		 * tries to change the link_status from GOOD to BAD, driver
> +		 * silently rejects it and returns a 0. This prevents userspace
> +		 * from accidently breaking  the display when it restores the
> +		 * state.
> +		 */
> +		if (state->link_status != DRM_LINK_STATUS_GOOD)
> +			state->link_status = val;
> +	} else if (property == config->aspect_ratio_property) {
> +		state->picture_aspect_ratio = val;
> +	} else if (property == config->content_type_property) {
> +		state->content_type = val;
> +	} else if (property == connector->scaling_mode_property) {
> +		state->scaling_mode = val;
> +	} else if (property == connector->content_protection_property) {
> +		if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> +			DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
> +			return -EINVAL;
> +		}
> +		state->content_protection = val;
> +	} else if (property == config->writeback_fb_id_property) {
> +		struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> +		int ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
> +		if (fb)
> +			drm_framebuffer_put(fb);
> +		return ret;
> +	} else if (property == config->writeback_out_fence_ptr_property) {
> +		s32 __user *fence_ptr = u64_to_user_ptr(val);
> +
> +		return set_out_fence_for_connector(state->state, connector,
> +						   fence_ptr);
> +	} else if (connector->funcs->atomic_set_property) {
> +		return connector->funcs->atomic_set_property(connector,
> +				state, property, val);
> +	} else {
> +		DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
> +				 connector->base.id, connector->name,
> +				 property->base.id, property->name);
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static int
> +drm_atomic_connector_get_property(struct drm_connector *connector,
> +		const struct drm_connector_state *state,
> +		struct drm_property *property, uint64_t *val)
> +{
> +	struct drm_device *dev = connector->dev;
> +	struct drm_mode_config *config = &dev->mode_config;
> +
> +	if (property == config->prop_crtc_id) {
> +		*val = (state->crtc) ? state->crtc->base.id : 0;
> +	} else if (property == config->dpms_property) {
> +		*val = connector->dpms;
> +	} else if (property == config->tv_select_subconnector_property) {
> +		*val = state->tv.subconnector;
> +	} else if (property == config->tv_left_margin_property) {
> +		*val = state->tv.margins.left;
> +	} else if (property == config->tv_right_margin_property) {
> +		*val = state->tv.margins.right;
> +	} else if (property == config->tv_top_margin_property) {
> +		*val = state->tv.margins.top;
> +	} else if (property == config->tv_bottom_margin_property) {
> +		*val = state->tv.margins.bottom;
> +	} else if (property == config->tv_mode_property) {
> +		*val = state->tv.mode;
> +	} else if (property == config->tv_brightness_property) {
> +		*val = state->tv.brightness;
> +	} else if (property == config->tv_contrast_property) {
> +		*val = state->tv.contrast;
> +	} else if (property == config->tv_flicker_reduction_property) {
> +		*val = state->tv.flicker_reduction;
> +	} else if (property == config->tv_overscan_property) {
> +		*val = state->tv.overscan;
> +	} else if (property == config->tv_saturation_property) {
> +		*val = state->tv.saturation;
> +	} else if (property == config->tv_hue_property) {
> +		*val = state->tv.hue;
> +	} else if (property == config->link_status_property) {
> +		*val = state->link_status;
> +	} else if (property == config->aspect_ratio_property) {
> +		*val = state->picture_aspect_ratio;
> +	} else if (property == config->content_type_property) {
> +		*val = state->content_type;
> +	} else if (property == connector->scaling_mode_property) {
> +		*val = state->scaling_mode;
> +	} else if (property == connector->content_protection_property) {
> +		*val = state->content_protection;
> +	} else if (property == config->writeback_fb_id_property) {
> +		/* Writeback framebuffer is one-shot, write and forget */
> +		*val = 0;
> +	} else if (property == config->writeback_out_fence_ptr_property) {
> +		*val = 0;
> +	} else if (connector->funcs->atomic_get_property) {
> +		return connector->funcs->atomic_get_property(connector,
> +				state, property, val);
> +	} else {
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +int drm_atomic_get_property(struct drm_mode_object *obj,
> +		struct drm_property *property, uint64_t *val)
> +{
> +	struct drm_device *dev = property->dev;
> +	int ret;
> +
> +	switch (obj->type) {
> +	case DRM_MODE_OBJECT_CONNECTOR: {
> +		struct drm_connector *connector = obj_to_connector(obj);
> +		WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
> +		ret = drm_atomic_connector_get_property(connector,
> +				connector->state, property, val);
> +		break;
> +	}
> +	case DRM_MODE_OBJECT_CRTC: {
> +		struct drm_crtc *crtc = obj_to_crtc(obj);
> +		WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
> +		ret = drm_atomic_crtc_get_property(crtc,
> +				crtc->state, property, val);
> +		break;
> +	}
> +	case DRM_MODE_OBJECT_PLANE: {
> +		struct drm_plane *plane = obj_to_plane(obj);
> +		WARN_ON(!drm_modeset_is_locked(&plane->mutex));
> +		ret = drm_atomic_plane_get_property(plane,
> +				plane->state, property, val);
> +		break;
> +	}
> +	default:
> +		ret = -EINVAL;
> +		break;
> +	}
> +
> +	return ret;
> +}
> +
> +/*
> + * The big monster ioctl
> + */
> +
> +static struct drm_pending_vblank_event *create_vblank_event(
> +		struct drm_crtc *crtc, uint64_t user_data)
> +{
> +	struct drm_pending_vblank_event *e = NULL;
> +
> +	e = kzalloc(sizeof *e, GFP_KERNEL);
> +	if (!e)
> +		return NULL;
> +
> +	e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
> +	e->event.base.length = sizeof(e->event);
> +	e->event.vbl.crtc_id = crtc->base.id;
> +	e->event.vbl.user_data = user_data;
> +
> +	return e;
> +}
> +
> +int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
> +				     struct drm_connector *connector,
> +				     int mode)
> +{
> +	struct drm_connector *tmp_connector;
> +	struct drm_connector_state *new_conn_state;
> +	struct drm_crtc *crtc;
> +	struct drm_crtc_state *crtc_state;
> +	int i, ret, old_mode = connector->dpms;
> +	bool active = false;
> +
> +	ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
> +			       state->acquire_ctx);
> +	if (ret)
> +		return ret;
> +
> +	if (mode != DRM_MODE_DPMS_ON)
> +		mode = DRM_MODE_DPMS_OFF;
> +	connector->dpms = mode;
> +
> +	crtc = connector->state->crtc;
> +	if (!crtc)
> +		goto out;
> +	ret = drm_atomic_add_affected_connectors(state, crtc);
> +	if (ret)
> +		goto out;
> +
> +	crtc_state = drm_atomic_get_crtc_state(state, crtc);
> +	if (IS_ERR(crtc_state)) {
> +		ret = PTR_ERR(crtc_state);
> +		goto out;
> +	}
> +
> +	for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
> +		if (new_conn_state->crtc != crtc)
> +			continue;
> +		if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
> +			active = true;
> +			break;
> +		}
> +	}
> +
> +	crtc_state->active = active;
> +	ret = drm_atomic_commit(state);
> +out:
> +	if (ret != 0)
> +		connector->dpms = old_mode;
> +	return ret;
> +}
> +
> +int drm_atomic_set_property(struct drm_atomic_state *state,
> +			    struct drm_mode_object *obj,
> +			    struct drm_property *prop,
> +			    uint64_t prop_value)
> +{
> +	struct drm_mode_object *ref;
> +	int ret;
> +
> +	if (!drm_property_change_valid_get(prop, prop_value, &ref))
> +		return -EINVAL;
> +
> +	switch (obj->type) {
> +	case DRM_MODE_OBJECT_CONNECTOR: {
> +		struct drm_connector *connector = obj_to_connector(obj);
> +		struct drm_connector_state *connector_state;
> +
> +		connector_state = drm_atomic_get_connector_state(state, connector);
> +		if (IS_ERR(connector_state)) {
> +			ret = PTR_ERR(connector_state);
> +			break;
> +		}
> +
> +		ret = drm_atomic_connector_set_property(connector,
> +				connector_state, prop, prop_value);
> +		break;
> +	}
> +	case DRM_MODE_OBJECT_CRTC: {
> +		struct drm_crtc *crtc = obj_to_crtc(obj);
> +		struct drm_crtc_state *crtc_state;
> +
> +		crtc_state = drm_atomic_get_crtc_state(state, crtc);
> +		if (IS_ERR(crtc_state)) {
> +			ret = PTR_ERR(crtc_state);
> +			break;
> +		}
> +
> +		ret = drm_atomic_crtc_set_property(crtc,
> +				crtc_state, prop, prop_value);
> +		break;
> +	}
> +	case DRM_MODE_OBJECT_PLANE: {
> +		struct drm_plane *plane = obj_to_plane(obj);
> +		struct drm_plane_state *plane_state;
> +
> +		plane_state = drm_atomic_get_plane_state(state, plane);
> +		if (IS_ERR(plane_state)) {
> +			ret = PTR_ERR(plane_state);
> +			break;
> +		}
> +
> +		ret = drm_atomic_plane_set_property(plane,
> +				plane_state, prop, prop_value);
> +		break;
> +	}
> +	default:
> +		ret = -EINVAL;
> +		break;
> +	}
> +
> +	drm_property_change_valid_put(prop, ref);
> +	return ret;
> +}
> +
> +/**
> + * DOC: explicit fencing properties
> + *
> + * Explicit fencing allows userspace to control the buffer synchronization
> + * between devices. A Fence or a group of fences are transfered to/from
> + * userspace using Sync File fds and there are two DRM properties for that.
> + * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
> + * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
> + *
> + * As a contrast, with implicit fencing the kernel keeps track of any
> + * ongoing rendering, and automatically ensures that the atomic update waits
> + * for any pending rendering to complete. For shared buffers represented with
> + * a &struct dma_buf this is tracked in &struct reservation_object.
> + * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
> + * whereas explicit fencing is what Android wants.
> + *
> + * "IN_FENCE_FD”:
> + *	Use this property to pass a fence that DRM should wait on before
> + *	proceeding with the Atomic Commit request and show the framebuffer for
> + *	the plane on the screen. The fence can be either a normal fence or a
> + *	merged one, the sync_file framework will handle both cases and use a
> + *	fence_array if a merged fence is received. Passing -1 here means no
> + *	fences to wait on.
> + *
> + *	If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
> + *	it will only check if the Sync File is a valid one.
> + *
> + *	On the driver side the fence is stored on the @fence parameter of
> + *	&struct drm_plane_state. Drivers which also support implicit fencing
> + *	should set the implicit fence using drm_atomic_set_fence_for_plane(),
> + *	to make sure there's consistent behaviour between drivers in precedence
> + *	of implicit vs. explicit fencing.
> + *
> + * "OUT_FENCE_PTR”:
> + *	Use this property to pass a file descriptor pointer to DRM. Once the
> + *	Atomic Commit request call returns OUT_FENCE_PTR will be filled with
> + *	the file descriptor number of a Sync File. This Sync File contains the
> + *	CRTC fence that will be signaled when all framebuffers present on the
> + *	Atomic Commit * request for that given CRTC are scanned out on the
> + *	screen.
> + *
> + *	The Atomic Commit request fails if a invalid pointer is passed. If the
> + *	Atomic Commit request fails for any other reason the out fence fd
> + *	returned will be -1. On a Atomic Commit with the
> + *	DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
> + *
> + *	Note that out-fences don't have a special interface to drivers and are
> + *	internally represented by a &struct drm_pending_vblank_event in struct
> + *	&drm_crtc_state, which is also used by the nonblocking atomic commit
> + *	helpers and for the DRM event handling for existing userspace.
> + */
> +
> +struct drm_out_fence_state {
> +	s32 __user *out_fence_ptr;
> +	struct sync_file *sync_file;
> +	int fd;
> +};
> +
> +static int setup_out_fence(struct drm_out_fence_state *fence_state,
> +			   struct dma_fence *fence)
> +{
> +	fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
> +	if (fence_state->fd < 0)
> +		return fence_state->fd;
> +
> +	if (put_user(fence_state->fd, fence_state->out_fence_ptr))
> +		return -EFAULT;
> +
> +	fence_state->sync_file = sync_file_create(fence);
> +	if (!fence_state->sync_file)
> +		return -ENOMEM;
> +
> +	return 0;
> +}
> +
> +static int prepare_signaling(struct drm_device *dev,
> +				  struct drm_atomic_state *state,
> +				  struct drm_mode_atomic *arg,
> +				  struct drm_file *file_priv,
> +				  struct drm_out_fence_state **fence_state,
> +				  unsigned int *num_fences)
> +{
> +	struct drm_crtc *crtc;
> +	struct drm_crtc_state *crtc_state;
> +	struct drm_connector *conn;
> +	struct drm_connector_state *conn_state;
> +	int i, c = 0, ret;
> +
> +	if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
> +		return 0;
> +
> +	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> +		s32 __user *fence_ptr;
> +
> +		fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
> +
> +		if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
> +			struct drm_pending_vblank_event *e;
> +
> +			e = create_vblank_event(crtc, arg->user_data);
> +			if (!e)
> +				return -ENOMEM;
> +
> +			crtc_state->event = e;
> +		}
> +
> +		if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
> +			struct drm_pending_vblank_event *e = crtc_state->event;
> +
> +			if (!file_priv)
> +				continue;
> +
> +			ret = drm_event_reserve_init(dev, file_priv, &e->base,
> +						     &e->event.base);
> +			if (ret) {
> +				kfree(e);
> +				crtc_state->event = NULL;
> +				return ret;
> +			}
> +		}
> +
> +		if (fence_ptr) {
> +			struct dma_fence *fence;
> +			struct drm_out_fence_state *f;
> +
> +			f = krealloc(*fence_state, sizeof(**fence_state) *
> +				     (*num_fences + 1), GFP_KERNEL);
> +			if (!f)
> +				return -ENOMEM;
> +
> +			memset(&f[*num_fences], 0, sizeof(*f));
> +
> +			f[*num_fences].out_fence_ptr = fence_ptr;
> +			*fence_state = f;
> +
> +			fence = drm_crtc_create_fence(crtc);
> +			if (!fence)
> +				return -ENOMEM;
> +
> +			ret = setup_out_fence(&f[(*num_fences)++], fence);
> +			if (ret) {
> +				dma_fence_put(fence);
> +				return ret;
> +			}
> +
> +			crtc_state->event->base.fence = fence;
> +		}
> +
> +		c++;
> +	}
> +
> +	for_each_new_connector_in_state(state, conn, conn_state, i) {
> +		struct drm_writeback_connector *wb_conn;
> +		struct drm_writeback_job *job;
> +		struct drm_out_fence_state *f;
> +		struct dma_fence *fence;
> +		s32 __user *fence_ptr;
> +
> +		fence_ptr = get_out_fence_for_connector(state, conn);
> +		if (!fence_ptr)
> +			continue;
> +
> +		job = drm_atomic_get_writeback_job(conn_state);
> +		if (!job)
> +			return -ENOMEM;
> +
> +		f = krealloc(*fence_state, sizeof(**fence_state) *
> +			     (*num_fences + 1), GFP_KERNEL);
> +		if (!f)
> +			return -ENOMEM;
> +
> +		memset(&f[*num_fences], 0, sizeof(*f));
> +
> +		f[*num_fences].out_fence_ptr = fence_ptr;
> +		*fence_state = f;
> +
> +		wb_conn = drm_connector_to_writeback(conn);
> +		fence = drm_writeback_get_out_fence(wb_conn);
> +		if (!fence)
> +			return -ENOMEM;
> +
> +		ret = setup_out_fence(&f[(*num_fences)++], fence);
> +		if (ret) {
> +			dma_fence_put(fence);
> +			return ret;
> +		}
> +
> +		job->out_fence = fence;
> +	}
> +
> +	/*
> +	 * Having this flag means user mode pends on event which will never
> +	 * reach due to lack of at least one CRTC for signaling
> +	 */
> +	if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> +		return -EINVAL;
> +
> +	return 0;
> +}
> +
> +static void complete_signaling(struct drm_device *dev,
> +			       struct drm_atomic_state *state,
> +			       struct drm_out_fence_state *fence_state,
> +			       unsigned int num_fences,
> +			       bool install_fds)
> +{
> +	struct drm_crtc *crtc;
> +	struct drm_crtc_state *crtc_state;
> +	int i;
> +
> +	if (install_fds) {
> +		for (i = 0; i < num_fences; i++)
> +			fd_install(fence_state[i].fd,
> +				   fence_state[i].sync_file->file);
> +
> +		kfree(fence_state);
> +		return;
> +	}
> +
> +	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> +		struct drm_pending_vblank_event *event = crtc_state->event;
> +		/*
> +		 * Free the allocated event. drm_atomic_helper_setup_commit
> +		 * can allocate an event too, so only free it if it's ours
> +		 * to prevent a double free in drm_atomic_state_clear.
> +		 */
> +		if (event && (event->base.fence || event->base.file_priv)) {
> +			drm_event_cancel_free(dev, &event->base);
> +			crtc_state->event = NULL;
> +		}
> +	}
> +
> +	if (!fence_state)
> +		return;
> +
> +	for (i = 0; i < num_fences; i++) {
> +		if (fence_state[i].sync_file)
> +			fput(fence_state[i].sync_file->file);
> +		if (fence_state[i].fd >= 0)
> +			put_unused_fd(fence_state[i].fd);
> +
> +		/* If this fails log error to the user */
> +		if (fence_state[i].out_fence_ptr &&
> +		    put_user(-1, fence_state[i].out_fence_ptr))
> +			DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
> +	}
> +
> +	kfree(fence_state);
> +}
> +
> +int drm_mode_atomic_ioctl(struct drm_device *dev,
> +			  void *data, struct drm_file *file_priv)
> +{
> +	struct drm_mode_atomic *arg = data;
> +	uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
> +	uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
> +	uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
> +	uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
> +	unsigned int copied_objs, copied_props;
> +	struct drm_atomic_state *state;
> +	struct drm_modeset_acquire_ctx ctx;
> +	struct drm_out_fence_state *fence_state;
> +	int ret = 0;
> +	unsigned int i, j, num_fences;
> +
> +	/* disallow for drivers not supporting atomic: */
> +	if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
> +		return -EINVAL;
> +
> +	/* disallow for userspace that has not enabled atomic cap (even
> +	 * though this may be a bit overkill, since legacy userspace
> +	 * wouldn't know how to call this ioctl)
> +	 */
> +	if (!file_priv->atomic)
> +		return -EINVAL;
> +
> +	if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
> +		return -EINVAL;
> +
> +	if (arg->reserved)
> +		return -EINVAL;
> +
> +	if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
> +			!dev->mode_config.async_page_flip)
> +		return -EINVAL;
> +
> +	/* can't test and expect an event at the same time. */
> +	if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
> +			(arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> +		return -EINVAL;
> +
> +	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
> +
> +	state = drm_atomic_state_alloc(dev);
> +	if (!state)
> +		return -ENOMEM;
> +
> +	state->acquire_ctx = &ctx;
> +	state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
> +
> +retry:
> +	copied_objs = 0;
> +	copied_props = 0;
> +	fence_state = NULL;
> +	num_fences = 0;
> +
> +	for (i = 0; i < arg->count_objs; i++) {
> +		uint32_t obj_id, count_props;
> +		struct drm_mode_object *obj;
> +
> +		if (get_user(obj_id, objs_ptr + copied_objs)) {
> +			ret = -EFAULT;
> +			goto out;
> +		}
> +
> +		obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
> +		if (!obj) {
> +			ret = -ENOENT;
> +			goto out;
> +		}
> +
> +		if (!obj->properties) {
> +			drm_mode_object_put(obj);
> +			ret = -ENOENT;
> +			goto out;
> +		}
> +
> +		if (get_user(count_props, count_props_ptr + copied_objs)) {
> +			drm_mode_object_put(obj);
> +			ret = -EFAULT;
> +			goto out;
> +		}
> +
> +		copied_objs++;
> +
> +		for (j = 0; j < count_props; j++) {
> +			uint32_t prop_id;
> +			uint64_t prop_value;
> +			struct drm_property *prop;
> +
> +			if (get_user(prop_id, props_ptr + copied_props)) {
> +				drm_mode_object_put(obj);
> +				ret = -EFAULT;
> +				goto out;
> +			}
> +
> +			prop = drm_mode_obj_find_prop_id(obj, prop_id);
> +			if (!prop) {
> +				drm_mode_object_put(obj);
> +				ret = -ENOENT;
> +				goto out;
> +			}
> +
> +			if (copy_from_user(&prop_value,
> +					   prop_values_ptr + copied_props,
> +					   sizeof(prop_value))) {
> +				drm_mode_object_put(obj);
> +				ret = -EFAULT;
> +				goto out;
> +			}
> +
> +			ret = drm_atomic_set_property(state, obj, prop,
> +						      prop_value);
> +			if (ret) {
> +				drm_mode_object_put(obj);
> +				goto out;
> +			}
> +
> +			copied_props++;
> +		}
> +
> +		drm_mode_object_put(obj);
> +	}
> +
> +	ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
> +				&num_fences);
> +	if (ret)
> +		goto out;
> +
> +	if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
> +		ret = drm_atomic_check_only(state);
> +	} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
> +		ret = drm_atomic_nonblocking_commit(state);
> +	} else {
> +		if (unlikely(drm_debug & DRM_UT_STATE))
> +			drm_atomic_print_state(state);
> +
> +		ret = drm_atomic_commit(state);
> +	}
> +
> +out:
> +	complete_signaling(dev, state, fence_state, num_fences, !ret);
> +
> +	if (ret == -EDEADLK) {
> +		drm_atomic_state_clear(state);
> +		ret = drm_modeset_backoff(&ctx);
> +		if (!ret)
> +			goto retry;
> +	}
> +
> +	drm_atomic_state_put(state);
> +
> +	drm_modeset_drop_locks(&ctx);
> +	drm_modeset_acquire_fini(&ctx);
> +
> +	return ret;
> +}
> diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
> index 5a84c3bc915d..ce75e9506e85 100644
> --- a/drivers/gpu/drm/drm_crtc_helper.c
> +++ b/drivers/gpu/drm/drm_crtc_helper.c
> @@ -35,6 +35,7 @@
>  
>  #include <drm/drmP.h>
>  #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <drm/drm_crtc.h>
>  #include <drm/drm_encoder.h>
>  #include <drm/drm_fourcc.h>
> diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
> index ff5e0d521c21..ede20b55d50c 100644
> --- a/drivers/gpu/drm/drm_crtc_internal.h
> +++ b/drivers/gpu/drm/drm_crtc_internal.h
> @@ -204,6 +204,9 @@ struct drm_minor;
>  int drm_atomic_debugfs_init(struct drm_minor *minor);
>  #endif
>  
> +void drm_atomic_print_state(const struct drm_atomic_state *state);
> +
> +/* drm_atomic_uapi.c */
>  int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
>  				     struct drm_connector *connector,
>  				     int mode);
> @@ -213,6 +216,8 @@ int drm_atomic_set_property(struct drm_atomic_state *state,
>  			    uint64_t prop_value);
>  int drm_atomic_get_property(struct drm_mode_object *obj,
>  			    struct drm_property *property, uint64_t *val);
> +
> +/* IOCTL */
>  int drm_mode_atomic_ioctl(struct drm_device *dev,
>  			  void *data, struct drm_file *file_priv);
>  
> diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
> index 781af1d42d76..7ca8c77223cb 100644
> --- a/drivers/gpu/drm/drm_framebuffer.c
> +++ b/drivers/gpu/drm/drm_framebuffer.c
> @@ -25,6 +25,7 @@
>  #include <drm/drm_auth.h>
>  #include <drm/drm_framebuffer.h>
>  #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <drm/drm_print.h>
>  
>  #include "drm_internal.h"
> diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> index 2810d4131411..7607f9cd6f77 100644
> --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> @@ -16,6 +16,7 @@
>  
>  #include <drm/drmP.h>
>  #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <drm/drm_fb_helper.h>
>  #include <drm/drm_fourcc.h>
>  #include <drm/drm_framebuffer.h>
> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
> index 621f17643bb0..a393756b664e 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -28,6 +28,7 @@
>  #include <drm/drm_plane_helper.h>
>  #include <drm/drm_rect.h>
>  #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_encoder.h>
>  #include <drm/drm_atomic_helper.h>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index a85a83f31979..85cad16f31ed 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -46,6 +46,7 @@
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_plane_helper.h>
>  #include <drm/drm_rect.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <linux/dma_remapping.h>
>  #include <linux/reservation.h>
>  
> diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
> index c1f1779c980f..4bcdeca7479d 100644
> --- a/drivers/gpu/drm/msm/msm_atomic.c
> +++ b/drivers/gpu/drm/msm/msm_atomic.c
> @@ -15,6 +15,8 @@
>   * this program.  If not, see <http://www.gnu.org/licenses/>.
>   */
>  
> +#include <drm/drm_atomic_uapi.h>
> +
>  #include "msm_drv.h"
>  #include "msm_gem.h"
>  #include "msm_kms.h"
> diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
> index 0e6a121858d1..3ce136ba8791 100644
> --- a/drivers/gpu/drm/vc4/vc4_crtc.c
> +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
> @@ -35,6 +35,7 @@
>  #include <drm/drm_atomic.h>
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_atomic_uapi.h>
>  #include <linux/clk.h>
>  #include <drm/drm_fb_cma_helper.h>
>  #include <linux/component.h>
> diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
> index 6c6d37aa512a..9dc3fcbd290b 100644
> --- a/drivers/gpu/drm/vc4/vc4_plane.c
> +++ b/drivers/gpu/drm/vc4/vc4_plane.c
> @@ -22,6 +22,7 @@
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_fb_cma_helper.h>
>  #include <drm/drm_plane_helper.h>
> +#include <drm/drm_atomic_uapi.h>
>  
>  #include "uapi/drm/vc4_drm.h"
>  #include "vc4_drv.h"
> diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> index 66e49ef7d3b5..4aff40886acb 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -584,22 +584,6 @@ __drm_atomic_get_current_plane_state(struct drm_atomic_state *state,
>  	return plane->state;
>  }
>  
> -int __must_check
> -drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> -			     const struct drm_display_mode *mode);
> -int __must_check
> -drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> -				  struct drm_property_blob *blob);
> -int __must_check
> -drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> -			      struct drm_crtc *crtc);
> -void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> -				 struct drm_framebuffer *fb);
> -void drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> -				    struct dma_fence *fence);
> -int __must_check
> -drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> -				  struct drm_crtc *crtc);
>  int __must_check
>  drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
>  				   struct drm_crtc *crtc);
> diff --git a/include/drm/drm_atomic_uapi.h b/include/drm/drm_atomic_uapi.h
> new file mode 100644
> index 000000000000..8cec52ad1277
> --- /dev/null
> +++ b/include/drm/drm_atomic_uapi.h
> @@ -0,0 +1,58 @@
> +/*
> + * Copyright (C) 2014 Red Hat
> + * Copyright (C) 2014 Intel Corp.
> + * Copyright (C) 2018 Intel Corp.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + * Authors:
> + * Rob Clark <robdclark@xxxxxxxxx>
> + * Daniel Vetter <daniel.vetter@xxxxxxxx>
> + */
> +
> +#ifndef DRM_ATOMIC_UAPI_H_
> +#define DRM_ATOMIC_UAPI_H_
> +
> +struct drm_crtc_state;
> +struct drm_display_mode;
> +struct drm_property_blob;
> +struct drm_plane_state;
> +struct drm_crtc;
> +struct drm_connector_state;
> +struct dma_fence;
> +struct drm_framebuffer;
> +
> +int __must_check
> +drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> +			     const struct drm_display_mode *mode);
> +int __must_check
> +drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> +				  struct drm_property_blob *blob);
> +int __must_check
> +drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> +			      struct drm_crtc *crtc);
> +void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> +				 struct drm_framebuffer *fb);
> +void drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> +				    struct dma_fence *fence);
> +int __must_check
> +drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> +				  struct drm_crtc *crtc);
> +
> +#endif
> -- 
> 2.18.0
> 
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