drm/amd/display: propagate surface alpha setting from OS to DC

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -998,6 +998,7 @@ bool dc_commit_surfaces_to_stream(
 		plane_info[i].stereo_format = new_surfaces[i]->stereo_format;
 		plane_info[i].tiling_info = new_surfaces[i]->tiling_info;
 		plane_info[i].visible = new_surfaces[i]->visible;
+		plane_info[i].per_pixel_alpha = new_surfaces[i]->per_pixel_alpha;
 		plane_info[i].dcc = new_surfaces[i]->dcc;
 		scaling_info[i].scaling_quality = new_surfaces[i]->scaling_quality;
 		scaling_info[i].src_rect = new_surfaces[i]->src_rect;
@@ -1068,7 +1069,7 @@ static enum surface_update_type get_plane_info_update_type(
 		const struct dc_surface_update *u,
 		int surface_index)
 {
-	struct dc_plane_info temp_plane_info = { { { { 0 } } } };
+	struct dc_plane_info temp_plane_info = { 0 };
 
 	if (!u->plane_info)
 		return UPDATE_TYPE_FAST;
@@ -1091,6 +1092,7 @@ static enum surface_update_type get_plane_info_update_type(
 
 	/* Special Validation parameters */
 	temp_plane_info.format = u->plane_info->format;
+	temp_plane_info.per_pixel_alpha = u->plane_info->per_pixel_alpha;
 
 	if (surface_index == 0)
 		temp_plane_info.visible = u->plane_info->visible;
@@ -1327,6 +1329,8 @@ void dc_update_surfaces_and_stream(struct dc *dc,
 					srf_updates[i].plane_info->tiling_info;
 			surface->public.visible =
 					srf_updates[i].plane_info->visible;
+			surface->public.per_pixel_alpha =
+					srf_updates[i].plane_info->per_pixel_alpha;
 			surface->public.dcc =
 					srf_updates[i].plane_info->dcc;
 		}

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

@@ -221,10 +221,12 @@ void update_surface_trace(
 			SURFACE_TRACE(
 					"plane_info->tiling_info.gfx8.pipe_config = %d;\n"
 					"plane_info->tiling_info.gfx8.array_mode = %d;\n"
-					"plane_info->visible = %d;\n",
+					"plane_info->visible = %d;\n"
+					"plane_info->per_pixel_alpha = %d;\n",
 					update->plane_info->tiling_info.gfx8.pipe_config,
 					update->plane_info->tiling_info.gfx8.array_mode,
-					update->plane_info->visible);
+					update->plane_info->visible,
+					update->plane_info->per_pixel_alpha);
 
 			SURFACE_TRACE("surface->tiling_info.gfx9.swizzle = %d;\n",
 					update->plane_info->tiling_info.gfx9.swizzle);

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

@@ -290,6 +290,7 @@ struct dc_transfer_func {
 };
 
 struct dc_surface {
+	bool per_pixel_alpha;
 	bool visible;
 	bool flip_immediate;
 	struct dc_plane_address address;
@@ -316,6 +317,7 @@ struct dc_surface {
 };
 
 struct dc_plane_info {
+	bool per_pixel_alpha;
 	union plane_size plane_size;
 	union dc_tiling_info tiling_info;
 	struct dc_plane_dcc_param dcc;

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

@@ -97,7 +97,7 @@ struct dc_context {
 
 #define MAX_EDID_BUFFER_SIZE 512
 #define EDID_BLOCK_SIZE 128
-#define MAX_SURFACE_NUM 2
+#define MAX_SURFACE_NUM 4
 #define NUM_PIXEL_FORMATS 10
 
 #include "dc_ddc_types.h"

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -1559,7 +1559,9 @@ static void update_dchubp_dpp(
 	struct pipe_ctx *temp_pipe;
 	int i;
 	int tree_pos = 0;
+	bool per_pixel_alpha = surface->public.per_pixel_alpha && pipe_ctx->bottom_pipe;
 
+	/* TODO: proper fix once fpga works */
 	/* depends on DML calculation, DPP clock value may change dynamically */
 	enable_dppclk(
 		dc->ctx,
@@ -1604,11 +1606,7 @@ static void update_dchubp_dpp(
 	/* TODO: build stream pipes group id. For now, use stream otg
 	 * id as pipe group id
 	 */
-	/*pipe_ctx->scl_data.lb_params.alpha_en = pipe_ctx->surface->public.per_pixel_alpha;*/
-	if (pipe_ctx->bottom_pipe && surface != pipe_ctx->bottom_pipe->surface)
-		pipe_ctx->scl_data.lb_params.alpha_en = 1;
-	else
-		pipe_ctx->scl_data.lb_params.alpha_en = 0;
+	pipe_ctx->scl_data.lb_params.alpha_en = per_pixel_alpha;
 	pipe_ctx->mpc_idx = pipe_ctx->tg->inst;
 	tree_cfg = &context->res_ctx.mpc_tree[pipe_ctx->mpc_idx];
 	if (tree_cfg->num_pipes == 0) {
@@ -1625,7 +1623,7 @@ static void update_dchubp_dpp(
 
 	tree_cfg->dpp[tree_pos] = pipe_ctx->pipe_idx;
 	tree_cfg->mpcc[tree_pos] = pipe_ctx->pipe_idx;
-	tree_cfg->per_pixel_alpha[tree_pos] = pipe_ctx->scl_data.lb_params.alpha_en;
+	tree_cfg->per_pixel_alpha[tree_pos] = per_pixel_alpha;
 	tree_cfg->num_pipes = tree_pos + 1;
 	dcn10_set_mpc_tree(mpc, tree_cfg);