drm/amd/display: Do cursor programming with rest of pipe

Cursors are always programmed independently of updates on other
planes. When atomic commits program cursor and surface updates
together the cursor update might be locked out by the surface
update and not take effect.

To combat this program cursor and surface updates together via
dc_update_planes_and_stream to ensure they can be applied
atomically.

When cursor updates come on their own use the old method
to program the cursor as dc_update_planes_and_stream isn't
handling this case correctly (yet), leading to a flickering
screen.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2186Reviewed-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -8364,6 +8364,77 @@ static inline uint32_t get_mem_type(struct drm_framebuffer *fb)
 	return abo->tbo.resource ? abo->tbo.resource->mem_type : 0;
 }
 
+static void amdgpu_dm_update_cursor(struct drm_plane *plane,
+				    struct drm_plane_state *old_plane_state,
+				    struct dc_stream_update *update)
+{
+	struct amdgpu_device *adev = drm_to_adev(plane->dev);
+	struct amdgpu_framebuffer *afb = to_amdgpu_framebuffer(plane->state->fb);
+	struct drm_crtc *crtc = afb ? plane->state->crtc : old_plane_state->crtc;
+	struct dm_crtc_state *crtc_state = crtc ? to_dm_crtc_state(crtc->state) : NULL;
+	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+	uint64_t address = afb ? afb->address : 0;
+	struct dc_cursor_position position = {0};
+	struct dc_cursor_attributes attributes;
+	int ret;
+
+	if (!plane->state->fb && !old_plane_state->fb)
+		return;
+
+	drm_dbg_atomic(plane->dev, "crtc_id=%d with size %d to %d\n",
+		       amdgpu_crtc->crtc_id, plane->state->crtc_w,
+		       plane->state->crtc_h);
+
+	ret = amdgpu_dm_plane_get_cursor_position(plane, crtc, &position);
+	if (ret)
+		return;
+
+	if (!position.enable) {
+		/* turn off cursor */
+		if (crtc_state && crtc_state->stream) {
+			dc_stream_set_cursor_position(crtc_state->stream,
+						      &position);
+			update->cursor_position = &crtc_state->stream->cursor_position;
+		}
+		return;
+	}
+
+	amdgpu_crtc->cursor_width = plane->state->crtc_w;
+	amdgpu_crtc->cursor_height = plane->state->crtc_h;
+
+	memset(&attributes, 0, sizeof(attributes));
+	attributes.address.high_part = upper_32_bits(address);
+	attributes.address.low_part  = lower_32_bits(address);
+	attributes.width             = plane->state->crtc_w;
+	attributes.height            = plane->state->crtc_h;
+	attributes.color_format      = CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA;
+	attributes.rotation_angle    = 0;
+	attributes.attribute_flags.value = 0;
+
+	/* Enable cursor degamma ROM on DCN3+ for implicit sRGB degamma in DRM
+	 * legacy gamma setup.
+	 */
+	if (crtc_state->cm_is_degamma_srgb &&
+	    adev->dm.dc->caps.color.dpp.gamma_corr)
+		attributes.attribute_flags.bits.ENABLE_CURSOR_DEGAMMA = 1;
+
+	attributes.pitch = afb->base.pitches[0] / afb->base.format->cpp[0];
+
+	if (crtc_state->stream) {
+		if (!dc_stream_set_cursor_attributes(crtc_state->stream,
+						     &attributes))
+			DRM_ERROR("DC failed to set cursor attributes\n");
+
+		update->cursor_attributes = &crtc_state->stream->cursor_attributes;
+
+		if (!dc_stream_set_cursor_position(crtc_state->stream,
+						   &position))
+			DRM_ERROR("DC failed to set cursor position\n");
+
+		update->cursor_position = &crtc_state->stream->cursor_position;
+	}
+}
+
 static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 				    struct drm_device *dev,
 				    struct amdgpu_display_manager *dm,
@@ -8387,6 +8458,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 	bool cursor_update = false;
 	bool pflip_present = false;
 	bool dirty_rects_changed = false;
+	bool updated_planes_and_streams = false;
 	struct {
 		struct dc_surface_update surface_updates[MAX_SURFACES];
 		struct dc_plane_info plane_infos[MAX_SURFACES];
@@ -8423,8 +8495,10 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 		/* Cursor plane is handled after stream updates */
 		if (plane->type == DRM_PLANE_TYPE_CURSOR) {
 			if ((fb && crtc == pcrtc) ||
-			    (old_plane_state->fb && old_plane_state->crtc == pcrtc))
+			    (old_plane_state->fb && old_plane_state->crtc == pcrtc)) {
 				cursor_update = true;
+				amdgpu_dm_update_cursor(plane, old_plane_state, &bundle->stream_update);
+			}
 
 			continue;
 		}
@@ -8697,6 +8771,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 					 acrtc_state->stream,
 					 &bundle->stream_update,
 					 bundle->surface_updates);
+		updated_planes_and_streams = true;
 
 		/**
 		 * Enable or disable the interrupts on the backend.
@@ -8774,7 +8849,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 	 * This avoids redundant programming in the case where we're going
 	 * to be disabling a single plane - those pipes are being disabled.
 	 */
-	if (acrtc_state->active_planes)
+	if (acrtc_state->active_planes && !updated_planes_and_streams)
 		amdgpu_dm_commit_cursors(state);
 
 cleanup:

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

@@ -1197,7 +1197,7 @@ static int amdgpu_dm_plane_atomic_async_check(struct drm_plane *plane,
 	return 0;
 }
 
-static int amdgpu_dm_plane_get_cursor_position(struct drm_plane *plane, struct drm_crtc *crtc,
+int amdgpu_dm_plane_get_cursor_position(struct drm_plane *plane, struct drm_crtc *crtc,
 					struct dc_cursor_position *position)
 {
 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h

@@ -29,6 +29,9 @@
 
 #include "dc.h"
 
+int amdgpu_dm_plane_get_cursor_position(struct drm_plane *plane, struct drm_crtc *crtc,
+					struct dc_cursor_position *position);
+
 void amdgpu_dm_plane_handle_cursor_update(struct drm_plane *plane,
 			  struct drm_plane_state *old_plane_state);
 

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -3340,6 +3340,11 @@ static void commit_planes_do_stream_update(struct dc *dc,
 				}
 			}
 
+			if (stream_update->cursor_attributes)
+				program_cursor_attributes(dc, stream);
+
+			if (stream_update->cursor_position)
+				program_cursor_position(dc, stream);
 
 			/* Full fe update*/
 			if (update_type == UPDATE_TYPE_FAST)

drivers/gpu/drm/amd/display/dc/core/dc_stream.c

@@ -219,10 +219,9 @@ struct dc_stream_status *dc_stream_get_status(
 	return dc_state_get_stream_status(dc->current_state, stream);
 }
 
-static void program_cursor_attributes(
+void program_cursor_attributes(
 	struct dc *dc,
-	struct dc_stream_state *stream,
-	const struct dc_cursor_attributes *attributes)
+	struct dc_stream_state *stream)
 {
 	int i;
 	struct resource_context *res_ctx;
@@ -318,7 +317,7 @@ bool dc_stream_program_cursor_attributes(
 			reset_idle_optimizations = true;
 		}
 
-		program_cursor_attributes(dc, stream, attributes);
+		program_cursor_attributes(dc, stream);
 
 		/* re-enable idle optimizations if necessary */
 		if (reset_idle_optimizations && !dc->debug.disable_dmub_reallow_idle)
@@ -330,10 +329,9 @@ bool dc_stream_program_cursor_attributes(
 	return false;
 }
 
-static void program_cursor_position(
+void program_cursor_position(
 	struct dc *dc,
-	struct dc_stream_state *stream,
-	const struct dc_cursor_position *position)
+	struct dc_stream_state *stream)
 {
 	int i;
 	struct resource_context *res_ctx;
@@ -410,7 +408,7 @@ bool dc_stream_program_cursor_position(
 			reset_idle_optimizations = true;
 		}
 
-		program_cursor_position(dc, stream, position);
+		program_cursor_position(dc, stream);
 		/* re-enable idle optimizations if necessary */
 		if (reset_idle_optimizations && !dc->debug.disable_dmub_reallow_idle)
 			dc_allow_idle_optimizations(dc, true);

drivers/gpu/drm/amd/display/dc/dc_stream.h

@@ -341,6 +341,9 @@ struct dc_stream_update {
 
 	struct test_pattern *pending_test_pattern;
 	struct dc_crtc_timing_adjust *crtc_timing_adjust;
+
+	struct dc_cursor_attributes *cursor_attributes;
+	struct dc_cursor_position *cursor_position;
 };
 
 bool dc_is_stream_unchanged(
@@ -480,6 +483,15 @@ struct dc_stream_status *dc_stream_get_status(
  * Cursor interfaces - To manages the cursor within a stream
  ******************************************************************************/
 /* TODO: Deprecated once we switch to dc_set_cursor_position */
+
+void program_cursor_attributes(
+	struct dc *dc,
+	struct dc_stream_state *stream);
+
+void program_cursor_position(
+	struct dc *dc,
+	struct dc_stream_state *stream);
+
 bool dc_stream_set_cursor_attributes(
 	struct dc_stream_state *stream,
 	const struct dc_cursor_attributes *attributes);