drm/amd/display: Recalculate pitch when buffers change

[Why]
Pitch was only calculated based on format whenever the plane state
was recreated. This could result in surface corruption due to the
incorrect pitch being programmed when the surface pitch changed during
commits where state->allow_modeset = false.

[How]
Recalculate pitch at the same time we update the buffer address and
other buffer attributes. This function was previously called
fill_plane_tiling_attributes but I've also renamed it to
fill_plane_buffer_attributes to clarify the actual intent of the
function now that it's handling most buffer related attributes.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -2528,28 +2528,53 @@ static int fill_plane_dcc_attributes(struct amdgpu_device *adev,
 }
 
 static int
-fill_plane_tiling_attributes(struct amdgpu_device *adev,
+fill_plane_buffer_attributes(struct amdgpu_device *adev,
 			     const struct amdgpu_framebuffer *afb,
 			     const struct dc_plane_state *plane_state,
 			     union dc_tiling_info *tiling_info,
+			     union plane_size *plane_size,
 			     struct dc_plane_dcc_param *dcc,
 			     struct dc_plane_address *address,
 			     uint64_t tiling_flags)
 {
+	const struct drm_framebuffer *fb = &afb->base;
 	int ret;
 
 	memset(tiling_info, 0, sizeof(*tiling_info));
+	memset(plane_size, 0, sizeof(*plane_size));
 	memset(dcc, 0, sizeof(*dcc));
 	memset(address, 0, sizeof(*address));
 
 	if (plane_state->format < SURFACE_PIXEL_FORMAT_VIDEO_BEGIN) {
+		plane_size->grph.surface_size.x = 0;
+		plane_size->grph.surface_size.y = 0;
+		plane_size->grph.surface_size.width = fb->width;
+		plane_size->grph.surface_size.height = fb->height;
+		plane_size->grph.surface_pitch =
+			fb->pitches[0] / fb->format->cpp[0];
+
 		address->type = PLN_ADDR_TYPE_GRAPHICS;
 		address->grph.addr.low_part = lower_32_bits(afb->address);
 		address->grph.addr.high_part = upper_32_bits(afb->address);
 	} else {
-		const struct drm_framebuffer *fb = &afb->base;
 		uint64_t chroma_addr = afb->address + fb->offsets[1];
 
+		plane_size->video.luma_size.x = 0;
+		plane_size->video.luma_size.y = 0;
+		plane_size->video.luma_size.width = fb->width;
+		plane_size->video.luma_size.height = fb->height;
+		plane_size->video.luma_pitch =
+			fb->pitches[0] / fb->format->cpp[0];
+
+		plane_size->video.chroma_size.x = 0;
+		plane_size->video.chroma_size.y = 0;
+		/* TODO: set these based on surface format */
+		plane_size->video.chroma_size.width = fb->width / 2;
+		plane_size->video.chroma_size.height = fb->height / 2;
+
+		plane_size->video.chroma_pitch =
+			fb->pitches[1] / fb->format->cpp[1];
+
 		address->type = PLN_ADDR_TYPE_VIDEO_PROGRESSIVE;
 		address->video_progressive.luma_addr.low_part =
 			lower_32_bits(afb->address);
@@ -2670,41 +2695,9 @@ static int fill_plane_attributes_from_fb(struct amdgpu_device *adev,
 		return -EINVAL;
 	}
 
-	memset(&plane_state->address, 0, sizeof(plane_state->address));
-
-	if (plane_state->format < SURFACE_PIXEL_FORMAT_VIDEO_BEGIN) {
-		plane_state->plane_size.grph.surface_size.x = 0;
-		plane_state->plane_size.grph.surface_size.y = 0;
-		plane_state->plane_size.grph.surface_size.width = fb->width;
-		plane_state->plane_size.grph.surface_size.height = fb->height;
-		plane_state->plane_size.grph.surface_pitch =
-				fb->pitches[0] / fb->format->cpp[0];
-		/* TODO: unhardcode */
-		plane_state->color_space = COLOR_SPACE_SRGB;
-
-	} else {
-		plane_state->plane_size.video.luma_size.x = 0;
-		plane_state->plane_size.video.luma_size.y = 0;
-		plane_state->plane_size.video.luma_size.width = fb->width;
-		plane_state->plane_size.video.luma_size.height = fb->height;
-		plane_state->plane_size.video.luma_pitch =
-			fb->pitches[0] / fb->format->cpp[0];
-
-		plane_state->plane_size.video.chroma_size.x = 0;
-		plane_state->plane_size.video.chroma_size.y = 0;
-		/* TODO: set these based on surface format */
-		plane_state->plane_size.video.chroma_size.width = fb->width / 2;
-		plane_state->plane_size.video.chroma_size.height = fb->height / 2;
-
-		plane_state->plane_size.video.chroma_pitch =
-			fb->pitches[1] / fb->format->cpp[1];
-
-		/* TODO: unhardcode */
-		plane_state->color_space = COLOR_SPACE_YCBCR709;
-	}
-
-	fill_plane_tiling_attributes(adev, amdgpu_fb, plane_state,
+	fill_plane_buffer_attributes(adev, amdgpu_fb, plane_state,
 				     &plane_state->tiling_info,
+				     &plane_state->plane_size,
 				     &plane_state->dcc,
 				     &plane_state->address,
 				     tiling_flags);
@@ -4001,9 +3994,10 @@ static int dm_plane_helper_prepare_fb(struct drm_plane *plane,
 			dm_plane_state_old->dc_state != dm_plane_state_new->dc_state) {
 		struct dc_plane_state *plane_state = dm_plane_state_new->dc_state;
 
-		fill_plane_tiling_attributes(
+		fill_plane_buffer_attributes(
 			adev, afb, plane_state, &plane_state->tiling_info,
-			&plane_state->dcc, &plane_state->address, tiling_flags);
+			&plane_state->plane_size, &plane_state->dcc,
+			&plane_state->address, tiling_flags);
 	}
 
 	return 0;
@@ -5174,8 +5168,9 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 
 		amdgpu_bo_unreserve(abo);
 
-		fill_plane_tiling_attributes(dm->adev, afb, dc_plane,
+		fill_plane_buffer_attributes(dm->adev, afb, dc_plane,
 			&bundle->plane_infos[planes_count].tiling_info,
+			&bundle->plane_infos[planes_count].plane_size,
 			&bundle->plane_infos[planes_count].dcc,
 			&bundle->flip_addrs[planes_count].address,
 			tiling_flags);