drm: extract drm_atomic_uapi.c

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.

v4:
- Fixup armada, newly converted atomic driver hooray!
- Fixup msm/dpu1, newly added too.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-7-daniel.vetter@ffwll.ch

15 files changed, 1415 insertions, 1358 deletions

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/armada/armada_overlay.c b/drivers/gpu/drm/armada/armada_overlay.c
index eb7dfb65ef47..8d770641fcc4 100644
--- a/drivers/gpu/drm/armada/armada_overlay.c
+++ b/drivers/gpu/drm/armada/armada_overlay.c
@@ -8,6 +8,7 @@
  */
 #include <drm/drmP.h>
 #include <drm/drm_atomic.h>
+#include <drm/drm_atomic_uapi.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/armada_drm.h>
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index f2c505d8ea57..7ada75919756 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
@@ -1888,7 +1074,7 @@ 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;
@@ -1995,544 +1181,3 @@ 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 2c23a48482da..3cf1aa132778 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.
+ *
+ * Authors:
+ * Rob Clark <robdclark@gmail.com>
+ * Daniel Vetter <daniel.vetter@ffwll.ch>
+ */
+
+#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 c8a7829d73d6..227f52e55d05 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 9382375d33b2..c24bc848ac6c 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/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index b640e39ebaca..015341e2dd4c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -21,6 +21,8 @@
 #include <linux/debugfs.h>
 #include <linux/dma-buf.h>
 
+#include <drm/drm_atomic_uapi.h>
+
 #include "msm_drv.h"
 #include "dpu_kms.h"
 #include "dpu_formats.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 cf78f74bb87f..f39ee212412d 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"