drm/amd/display: Driver message to SMU to indicate display off

Signed-off-by: Hersen Wu <hersenxs.wu@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

@@ -763,7 +763,7 @@ static bool dc_commit_state_no_check(struct dc *dc, struct dc_state *context)
 	if (!dcb->funcs->is_accelerated_mode(dcb))
 		dc->hwss.enable_accelerated_mode(dc);
 
-	dc->hwss.ready_shared_resources(dc);
+	dc->hwss.ready_shared_resources(dc, context);
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		pipe = &context->res_ctx.pipe_ctx[i];

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -1889,6 +1889,7 @@ enum dc_status dce110_apply_ctx_to_hw(
 			return status;
 	}
 
+	/* pplib is notified if disp_num changed */
 	dc->hwss.set_bandwidth(dc, context, true);
 
 	/* to save power */
@@ -2683,7 +2684,7 @@ static void program_csc_matrix(struct pipe_ctx *pipe_ctx,
 	}
 }
 
-static void ready_shared_resources(struct dc *dc) {}
+static void ready_shared_resources(struct dc *dc, struct dc_state *context) {}
 
 static void optimize_shared_resources(struct dc *dc) {}
 

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

@@ -802,18 +802,14 @@ static void undo_DEGVIDCN10_253_wa(struct dc *dc)
 			IP_REQUEST_EN, 0);
 }
 
-static void ready_shared_resources(struct dc *dc)
-{
-	if (dc->current_state->stream_count == 0 &&
-			!dc->debug.disable_stutter)
-		undo_DEGVIDCN10_253_wa(dc);
-}
-
 static void apply_DEGVIDCN10_253_wa(struct dc *dc)
 {
 	struct dce_hwseq *hws = dc->hwseq;
 	struct mem_input *mi = dc->res_pool->mis[0];
 
+	if (dc->debug.disable_stutter)
+		return;
+
 	REG_SET(DC_IP_REQUEST_CNTL, 0,
 			IP_REQUEST_EN, 1);
 
@@ -824,13 +820,6 @@ static void apply_DEGVIDCN10_253_wa(struct dc *dc)
 	mi->funcs->set_hubp_blank_en(mi, false);
 }
 
-static void optimize_shared_resources(struct dc *dc)
-{
-	if (dc->current_state->stream_count == 0 &&
-			!dc->debug.disable_stutter)
-		apply_DEGVIDCN10_253_wa(dc);
-}
-
 static void bios_golden_init(struct dc *dc)
 {
 	struct dc_bios *bp = dc->ctx->dc_bios;
@@ -2445,6 +2434,27 @@ static void dcn10_pplib_apply_display_requirements(
 	dc->prev_display_config = *pp_display_cfg;
 }
 
+static void optimize_shared_resources(struct dc *dc)
+{
+	if (dc->current_state->stream_count == 0) {
+		apply_DEGVIDCN10_253_wa(dc);
+		/* S0i2 message */
+		dcn10_pplib_apply_display_requirements(dc, dc->current_state);
+	}
+}
+
+static void ready_shared_resources(struct dc *dc, struct dc_state *context)
+{
+	if (dc->current_state->stream_count == 0 &&
+			!dc->debug.disable_stutter)
+		undo_DEGVIDCN10_253_wa(dc);
+
+	/* S0i2 message */
+	if (dc->current_state->stream_count == 0 &&
+			context->stream_count != 0)
+		dcn10_pplib_apply_display_requirements(dc, context);
+}
+
 static void dcn10_apply_ctx_for_surface(
 		struct dc *dc,
 		const struct dc_stream_state *stream,

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

@@ -174,7 +174,7 @@ struct hw_sequencer_funcs {
 			struct resource_pool *res_pool,
 			struct pipe_ctx *pipe_ctx);
 
-	void (*ready_shared_resources)(struct dc *dc);
+	void (*ready_shared_resources)(struct dc *dc, struct dc_state *context);
 	void (*optimize_shared_resources)(struct dc *dc);
 };