drm/amd/display: improve cursor programming reliability

This change will cache cursor attributes and reprogram them
when enabling cursor after power gating if the attributes were not
yet reprogrammed

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

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

@@ -182,7 +182,6 @@ bool dc_stream_set_cursor_attributes(
 	struct core_stream *stream;
 	struct core_dc *core_dc;
 	struct resource_context *res_ctx;
-	bool ret = false;
 
 	if (NULL == dc_stream) {
 		dm_error("DC: dc_stream is NULL!\n");
@@ -200,28 +199,26 @@ bool dc_stream_set_cursor_attributes(
 	for (i = 0; i < MAX_PIPES; i++) {
 		struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];
 
-		if ((pipe_ctx->stream == stream) &&
-			(pipe_ctx->ipp != NULL)) {
-			struct input_pixel_processor *ipp = pipe_ctx->ipp;
+		if (pipe_ctx->stream != stream || !pipe_ctx->ipp)
+			continue;
+		if (pipe_ctx->top_pipe && pipe_ctx->surface != pipe_ctx->top_pipe->surface)
+			continue;
 
-			if (ipp->funcs->ipp_cursor_set_attributes(
-				ipp, attributes))
-				ret = true;
-		}
+		pipe_ctx->ipp->funcs->ipp_cursor_set_attributes(
+				pipe_ctx->ipp, attributes);
 	}
 
-	return ret;
+	return true;
 }
 
 bool dc_stream_set_cursor_position(
 	const struct dc_stream *dc_stream,
-	struct dc_cursor_position *position)
+	const struct dc_cursor_position *position)
 {
 	int i;
 	struct core_stream *stream;
 	struct core_dc *core_dc;
 	struct resource_context *res_ctx;
-	bool ret = false;
 
 	if (NULL == dc_stream) {
 		dm_error("DC: dc_stream is NULL!\n");
@@ -239,27 +236,27 @@ bool dc_stream_set_cursor_position(
 
 	for (i = 0; i < MAX_PIPES; i++) {
 		struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];
+		struct input_pixel_processor *ipp = pipe_ctx->ipp;
+		struct dc_cursor_position pos_cpy = *position;
+		struct dc_cursor_mi_param param = {
+			.pixel_clk_khz = dc_stream->timing.pix_clk_khz,
+			.ref_clk_khz = res_ctx->pool->ref_clock_inKhz,
+			.viewport_x_start = pipe_ctx->scl_data.viewport.x,
+			.viewport_width = pipe_ctx->scl_data.viewport.width,
+			.h_scale_ratio = pipe_ctx->scl_data.ratios.horz
+		};
+
+		if (pipe_ctx->stream != stream ||
+				!pipe_ctx->ipp || !pipe_ctx->surface)
+			continue;
 
-		if (pipe_ctx->stream == stream &&
-				pipe_ctx->ipp && pipe_ctx->surface) {
-			struct input_pixel_processor *ipp = pipe_ctx->ipp;
-			struct dc_cursor_mi_param param = {
-				.pixel_clk_khz = dc_stream->timing.pix_clk_khz,
-				.ref_clk_khz = res_ctx->pool->ref_clock_inKhz,
-				.viewport_x_start = pipe_ctx->scl_data.viewport.x,
-				.viewport_width = pipe_ctx->scl_data.viewport.width,
-				.h_scale_ratio = pipe_ctx->scl_data.ratios.horz,
-			};
-
-			if (pipe_ctx->top_pipe && pipe_ctx->surface != pipe_ctx->top_pipe->surface)
-				position->enable = false;
-
-			ipp->funcs->ipp_cursor_set_position(ipp, position, &param);
-			ret = true;
-		}
+		if (pipe_ctx->top_pipe && pipe_ctx->surface != pipe_ctx->top_pipe->surface)
+			pos_cpy.enable = false;
+
+		ipp->funcs->ipp_cursor_set_position(ipp, &pos_cpy, &param);
 	}
 
-	return ret;
+	return true;
 }
 
 uint32_t dc_stream_get_vblank_counter(const struct dc_stream *dc_stream)

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

@@ -764,7 +764,7 @@ bool dc_stream_set_cursor_attributes(
 
 bool dc_stream_set_cursor_position(
 	const struct dc_stream *stream,
-	struct dc_cursor_position *position);
+	const struct dc_cursor_position *position);
 
 /* Newer interfaces  */
 struct dc_cursor {

drivers/gpu/drm/amd/display/dc/dce110/dce110_ipp.h

@@ -54,7 +54,7 @@ void dce110_ipp_cursor_set_position(
 	const struct dc_cursor_position *position,
 	const struct dc_cursor_mi_param *param);
 
-bool dce110_ipp_cursor_set_attributes(
+void dce110_ipp_cursor_set_attributes(
 	struct input_pixel_processor *ipp,
 	const struct dc_cursor_attributes *attributes);
 

drivers/gpu/drm/amd/display/dc/dce110/dce110_ipp_cursor.c

@@ -95,7 +95,7 @@ void dce110_ipp_cursor_set_position(
 	lock(ipp110, false);
 }
 
-bool dce110_ipp_cursor_set_attributes(
+void dce110_ipp_cursor_set_attributes(
 	struct input_pixel_processor *ipp,
 	const struct dc_cursor_attributes *attributes)
 {
@@ -122,8 +122,6 @@ bool dce110_ipp_cursor_set_attributes(
 
 	/* Unlock Cursor registers. */
 	lock(ipp110, false);
-
-	return true;
 }
 
 static void enable(

drivers/gpu/drm/amd/display/dc/dce120/dce120_ipp.h

@@ -42,7 +42,7 @@ void dce120_ipp_cursor_set_position(
 	const struct dc_cursor_position *position,
 	const struct dc_cursor_mi_param *param);
 
-bool dce120_ipp_cursor_set_attributes(
+void dce120_ipp_cursor_set_attributes(
 	struct input_pixel_processor *ipp,
 	const struct dc_cursor_attributes *attributes);
 

drivers/gpu/drm/amd/display/dc/dce120/dce120_ipp_cursor.c

@@ -160,7 +160,7 @@ void dce120_ipp_cursor_set_position(
 	lock(ipp110, false);
 }
 
-bool dce120_ipp_cursor_set_attributes(
+void dce120_ipp_cursor_set_attributes(
 	struct input_pixel_processor *ipp,
 	const struct dc_cursor_attributes *attributes)
 {
@@ -189,7 +189,5 @@ bool dce120_ipp_cursor_set_attributes(
 
 	/* Unlock Cursor registers. */
 	lock(ipp110, false);
-
-	return true;
 }
 

drivers/gpu/drm/amd/display/dc/inc/hw/ipp.h

@@ -37,8 +37,6 @@ struct input_pixel_processor {
 	struct  dc_context *ctx;
 	unsigned int inst;
 	const struct ipp_funcs *funcs;
-
-	unsigned int cusor_width;
 };
 
 enum ipp_prescale_mode {
@@ -88,7 +86,7 @@ struct ipp_funcs {
 		const struct dc_cursor_position *position,
 		const struct dc_cursor_mi_param *param);
 
-	bool (*ipp_cursor_set_attributes)(
+	void (*ipp_cursor_set_attributes)(
 		struct input_pixel_processor *ipp,
 		const struct dc_cursor_attributes *attributes);