drm/amd/display: add idle wait for passive surface update and modeset

Signed-off-by: Eric Yang <Eric.Yang2@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

@@ -934,6 +934,10 @@ static bool dc_commit_context_no_check(struct dc *dc, struct validate_context *c
 	if (!dcb->funcs->is_accelerated_mode(dcb))
 		core_dc->hwss.enable_accelerated_mode(core_dc);
 
+	for (i = 0; i < core_dc->res_pool->pipe_count; i++) {
+		pipe = &context->res_ctx.pipe_ctx[i];
+		core_dc->hwss.wait_for_mpcc_disconnect(core_dc->res_pool, pipe);
+	}
 	result = core_dc->hwss.apply_ctx_to_hw(core_dc, context);
 
 	program_timing_sync(core_dc, context);
@@ -1537,6 +1541,21 @@ void dc_update_surfaces_and_stream(struct dc *dc,
 		}
 	}
 
+	if (update_type > UPDATE_TYPE_FAST) {
+		for (i = 0; i < surface_count; i++) {
+			struct core_surface *surface = DC_SURFACE_TO_CORE(srf_updates[i].surface);
+
+			for (j = 0; j < core_dc->res_pool->pipe_count; j++) {
+				struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[j];
+
+				if (pipe_ctx->surface != surface)
+					continue;
+
+				core_dc->hwss.wait_for_mpcc_disconnect(core_dc->res_pool, pipe_ctx);
+			}
+		}
+	}
+
 	if (surface_count == 0)
 		core_dc->hwss.apply_ctx_for_surface(core_dc, NULL, context);
 

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

@@ -1739,6 +1739,7 @@ static void dcn10_apply_ctx_for_surface(
 			mpcc_cfg.bot_mpcc_id = 0xf;
 			mpcc_cfg.top_of_tree = !old_pipe_ctx->top_pipe;
 			old_pipe_ctx->mpcc->funcs->set(old_pipe_ctx->mpcc, &mpcc_cfg);
+			old_pipe_ctx->top_pipe->opp->mpcc_disconnect_pending[old_pipe_ctx->mpcc->inst] = true;
 
 			if (dc->public.debug.sanity_checks)
 				verify_allow_pstate_change_high(dc->hwseq);
@@ -2012,6 +2013,20 @@ static void dcn10_log_hw_state(struct core_dc *dc)
 	 */
 }
 
+static void dcn10_wait_for_mpcc_disconnect(struct resource_pool *res_pool, struct pipe_ctx *pipe_ctx)
+{
+	int i;
+	for (i = 0; i < MAX_PIPES; i++) {
+		if (!pipe_ctx->opp || !pipe_ctx->mpcc)
+			continue;
+
+		if (pipe_ctx->opp->mpcc_disconnect_pending[i]) {
+			pipe_ctx->mpcc->funcs->wait_for_idle(res_pool->mpcc[i]);
+			pipe_ctx->opp->mpcc_disconnect_pending[i] = false;
+		}
+	}
+}
+
 static bool dcn10_dummy_display_power_gating(
 	struct core_dc *dc,
 	uint8_t controller_id,
@@ -2085,7 +2100,8 @@ static const struct hw_sequencer_funcs dcn10_funcs = {
 	.set_static_screen_control = set_static_screen_control,
 	.setup_stereo = dcn10_setup_stereo,
 	.set_avmute = dce110_set_avmute,
-	.log_hw_state = dcn10_log_hw_state
+	.log_hw_state = dcn10_log_hw_state,
+	.wait_for_mpcc_disconnect = dcn10_wait_for_mpcc_disconnect
 };
 
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c

@@ -907,10 +907,14 @@ void dcn10_opp_construct(struct dcn10_opp *oppn10,
 	const struct dcn10_opp_shift *opp_shift,
 	const struct dcn10_opp_mask *opp_mask)
 {
+	int i;
 	oppn10->base.ctx = ctx;
 	oppn10->base.inst = inst;
 	oppn10->base.funcs = &dcn10_opp_funcs;
 
+	for (i = 0; i < MAX_PIPES; i++)
+		oppn10->base.mpcc_disconnect_pending[i] = false;
+
 	oppn10->regs = regs;
 	oppn10->opp_shift = opp_shift;
 	oppn10->opp_mask = opp_mask;

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

@@ -38,10 +38,8 @@
 
 struct core_stream;
 
-#define MAX_PIPES 6
 #define MAX_CLOCK_SOURCES 7
 
-
 /********* core_surface **********/
 #define DC_SURFACE_TO_CORE(dc_surface) \
 	container_of(dc_surface, struct core_surface, public)

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

@@ -32,6 +32,9 @@
 /******************************************************************************
  * Data types shared between different Virtual HW blocks
  ******************************************************************************/
+
+#define MAX_PIPES 6
+
 struct gamma_curve {
 	uint32_t offset;
 	uint32_t segments_num;

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

@@ -207,6 +207,7 @@ struct output_pixel_processor {
 	struct dc_context *ctx;
 	uint32_t inst;
 	struct pwl_params regamma_params;
+	bool mpcc_disconnect_pending[MAX_PIPES];
 	const struct opp_funcs *funcs;
 };
 

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

@@ -156,6 +156,8 @@ struct hw_sequencer_funcs {
 	void (*set_avmute)(struct pipe_ctx *pipe_ctx, bool enable);
 
 	void (*log_hw_state)(struct core_dc *dc);
+
+	void (*wait_for_mpcc_disconnect)(struct resource_pool *res_pool, struct pipe_ctx *pipe_ctx);
 };
 
 void color_space_to_black_color(