Revert "drm/atomic: Move framebuffer checks to helper"

This reverts commit 4ba6b7a646321e740c7f2d80c90505019c4e8fce.

Although the Solid Fill planes patchset got all reviews and
acknowledgements, it doesn't fulfill requirements for the new uABI. It
has neither corresponding open-source userspace implementation nor the
IGT tests coverage. Reverting this patchset until userspace obligations
are fulfilled.

Acked-by: Simon Ser <contact@emersion.fr>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231204131455.19023-3-dmitry.baryshkov@linaro.org

1 files changed, 57 insertions, 73 deletions

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index c6f2b86c48ae..1339785fbe80 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -589,76 +589,6 @@ plane_switching_crtc(const struct drm_plane_state *old_plane_state,
 	return true;
 }
 
-static int drm_atomic_plane_check_fb(const struct drm_plane_state *state)
-{
-	struct drm_plane *plane = state->plane;
-	const struct drm_framebuffer *fb = state->fb;
-	struct drm_mode_rect *clips;
-
-	uint32_t num_clips;
-	unsigned int fb_width, fb_height;
-	int ret;
-
-	/* Check whether this plane supports the fb pixel format. */
-	ret = drm_plane_check_pixel_format(plane, fb->format->format,
-					   fb->modifier);
-
-	if (ret) {
-		drm_dbg_atomic(plane->dev,
-			       "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n",
-			       plane->base.id, plane->name,
-			       &fb->format->format, fb->modifier);
-		return ret;
-	}
-
-	fb_width = fb->width << 16;
-	fb_height = fb->height << 16;
-
-	/* Make sure source coordinates are inside the fb. */
-	if (state->src_w > fb_width ||
-	    state->src_x > fb_width - state->src_w ||
-	    state->src_h > fb_height ||
-	    state->src_y > fb_height - state->src_h) {
-		drm_dbg_atomic(plane->dev,
-			       "[PLANE:%d:%s] invalid source coordinates "
-			       "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
-			       plane->base.id, plane->name,
-			       state->src_w >> 16,
-			       ((state->src_w & 0xffff) * 15625) >> 10,
-			       state->src_h >> 16,
-			       ((state->src_h & 0xffff) * 15625) >> 10,
-			       state->src_x >> 16,
-			       ((state->src_x & 0xffff) * 15625) >> 10,
-			       state->src_y >> 16,
-			       ((state->src_y & 0xffff) * 15625) >> 10,
-			       fb->width, fb->height);
-		return -ENOSPC;
-	}
-
-	clips = __drm_plane_get_damage_clips(state);
-	num_clips = drm_plane_get_damage_clips_count(state);
-
-	/* Make sure damage clips are valid and inside the fb. */
-	while (num_clips > 0) {
-		if (clips->x1 >= clips->x2 ||
-		    clips->y1 >= clips->y2 ||
-		    clips->x1 < 0 ||
-		    clips->y1 < 0 ||
-		    clips->x2 > fb_width ||
-		    clips->y2 > fb_height) {
-			drm_dbg_atomic(plane->dev,
-				       "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n",
-				       plane->base.id, plane->name, clips->x1,
-				       clips->y1, clips->x2, clips->y2);
-			return -EINVAL;
-		}
-		clips++;
-		num_clips--;
-	}
-
-	return 0;
-}
-
 /**
  * drm_atomic_plane_check - check plane state
  * @old_plane_state: old plane state to check
@@ -675,6 +605,9 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
 	struct drm_plane *plane = new_plane_state->plane;
 	struct drm_crtc *crtc = new_plane_state->crtc;
 	const struct drm_framebuffer *fb = new_plane_state->fb;
+	unsigned int fb_width, fb_height;
+	struct drm_mode_rect *clips;
+	uint32_t num_clips;
 	int ret;
 
 	/* either *both* CRTC and FB must be set, or neither */
@@ -701,6 +634,17 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
 		return -EINVAL;
 	}
 
+	/* Check whether this plane supports the fb pixel format. */
+	ret = drm_plane_check_pixel_format(plane, fb->format->format,
+					   fb->modifier);
+	if (ret) {
+		drm_dbg_atomic(plane->dev,
+			       "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n",
+			       plane->base.id, plane->name,
+			       &fb->format->format, fb->modifier);
+		return ret;
+	}
+
 	/* Give drivers some help against integer overflows */
 	if (new_plane_state->crtc_w > INT_MAX ||
 	    new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w ||
@@ -714,10 +658,50 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
 		return -ERANGE;
 	}
 
+	fb_width = fb->width << 16;
+	fb_height = fb->height << 16;
 
-	ret = drm_atomic_plane_check_fb(new_plane_state);
-	if (ret)
-		return ret;
+	/* Make sure source coordinates are inside the fb. */
+	if (new_plane_state->src_w > fb_width ||
+	    new_plane_state->src_x > fb_width - new_plane_state->src_w ||
+	    new_plane_state->src_h > fb_height ||
+	    new_plane_state->src_y > fb_height - new_plane_state->src_h) {
+		drm_dbg_atomic(plane->dev,
+			       "[PLANE:%d:%s] invalid source coordinates "
+			       "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
+			       plane->base.id, plane->name,
+			       new_plane_state->src_w >> 16,
+			       ((new_plane_state->src_w & 0xffff) * 15625) >> 10,
+			       new_plane_state->src_h >> 16,
+			       ((new_plane_state->src_h & 0xffff) * 15625) >> 10,
+			       new_plane_state->src_x >> 16,
+			       ((new_plane_state->src_x & 0xffff) * 15625) >> 10,
+			       new_plane_state->src_y >> 16,
+			       ((new_plane_state->src_y & 0xffff) * 15625) >> 10,
+			       fb->width, fb->height);
+		return -ENOSPC;
+	}
+
+	clips = __drm_plane_get_damage_clips(new_plane_state);
+	num_clips = drm_plane_get_damage_clips_count(new_plane_state);
+
+	/* Make sure damage clips are valid and inside the fb. */
+	while (num_clips > 0) {
+		if (clips->x1 >= clips->x2 ||
+		    clips->y1 >= clips->y2 ||
+		    clips->x1 < 0 ||
+		    clips->y1 < 0 ||
+		    clips->x2 > fb_width ||
+		    clips->y2 > fb_height) {
+			drm_dbg_atomic(plane->dev,
+				       "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n",
+				       plane->base.id, plane->name, clips->x1,
+				       clips->y1, clips->x2, clips->y2);
+			return -EINVAL;
+		}
+		clips++;
+		num_clips--;
+	}
 
 	if (plane_switching_crtc(old_plane_state, new_plane_state)) {
 		drm_dbg_atomic(plane->dev,