drm/amd/display: audio dynamic resource acquired related

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@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_link.c

@@ -2323,14 +2323,14 @@ void core_link_enable_stream(
 		allocate_mst_payload(pipe_ctx);
 }
 
-void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
+void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option)
 {
 	struct dc  *core_dc = pipe_ctx->stream->ctx->dc;
 
 	if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
 		deallocate_mst_payload(pipe_ctx);
 
-	core_dc->hwss.disable_stream(pipe_ctx);
+	core_dc->hwss.disable_stream(pipe_ctx, option);
 
 	disable_link(pipe_ctx->stream->sink->link, pipe_ctx->stream->signal);
 }

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

@@ -282,7 +282,7 @@ void dp_retrain_link_dp_test(struct dc_link *link,
 
 			dp_receiver_power_ctrl(link, false);
 
-			link->dc->hwss.disable_stream(&pipes[i]);
+			link->dc->hwss.disable_stream(&pipes[i], KEEP_ACQUIRED_RESOURCE);
 
 			link->link_enc->funcs->disable_output(
 					link->link_enc,

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

@@ -242,7 +242,10 @@ bool resource_construct(
 			pool->stream_enc_count++;
 		}
 	}
-
+	dc->caps.dynamic_audio = false;
+	if (pool->audio_count < pool->stream_enc_count) {
+		dc->caps.dynamic_audio = true;
+	}
 	for (i = 0; i < num_virtual_links; i++) {
 		pool->stream_enc[pool->stream_enc_count] =
 			virtual_stream_encoder_create(
@@ -1330,7 +1333,7 @@ static void update_stream_engine_usage(
 }
 
 /* TODO: release audio object */
-static void update_audio_usage(
+void update_audio_usage(
 		struct resource_context *res_ctx,
 		const struct resource_pool *pool,
 		struct audio *audio,
@@ -1414,12 +1417,21 @@ static struct audio *find_first_free_audio(
 		const struct resource_pool *pool)
 {
 	int i;
-	for (i = 0; i < pool->audio_count; i++) {
-		if (res_ctx->is_audio_acquired[i] == false) {
-			return pool->audios[i];
+	if (pool->audio_count >=  pool->stream_enc_count) {
+		for (i = 0; i < pool->audio_count; i++) {
+			if ((res_ctx->is_audio_acquired[i] == false) && (res_ctx->is_stream_enc_acquired[i] == true)) {
+				/*we have enough audio endpoint, no need to do dynamic distribution*/
+				return pool->audios[i];
+			}
 		}
-	}
+	} else { /*first come first serve*/
+		for (i = 0; i < pool->audio_count; i++) {
+			if (res_ctx->is_audio_acquired[i] == false) {
 
+				return pool->audios[i];
+			}
+		}
+	}
 	return 0;
 }
 

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

@@ -58,6 +58,7 @@ struct dc_caps {
 	uint32_t i2c_speed_in_khz;
 	unsigned int max_cursor_size;
 	bool dcc_const_color;
+	bool dynamic_audio;
 };
 
 struct dc_dcc_surface_param {

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

@@ -985,10 +985,11 @@ void hwss_edp_backlight_control(
 	link_transmitter_control(link->dc->ctx->dc_bios, &cntl);
 }
 
-void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
+void dce110_disable_stream(struct pipe_ctx *pipe_ctx, int option)
 {
 	struct dc_stream_state *stream = pipe_ctx->stream;
 	struct dc_link *link = stream->sink->link;
+	struct dc *dc = pipe_ctx->stream->ctx->dc;
 
 	if (pipe_ctx->stream_res.audio) {
 		pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
@@ -999,6 +1000,13 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 		else
 			pipe_ctx->stream_res.stream_enc->funcs->hdmi_audio_disable(
 					pipe_ctx->stream_res.stream_enc);
+		/*don't free audio if it is from retrain or internal disable stream*/
+		if (option == FREE_ACQUIRED_RESOURCE && dc->caps.dynamic_audio == true) {
+			/*we have to dynamic arbitrate the audio endpoints*/
+			pipe_ctx->stream_res.audio = NULL;
+			/*we free the resource, need reset is_audio_acquired*/
+			update_audio_usage(&dc->current_state->res_ctx, dc->res_pool, pipe_ctx->stream_res.audio, false);
+		}
 
 		/* TODO: notify audio driver for if audio modes list changed
 		 * add audio mode list change flag */
@@ -1871,7 +1879,7 @@ static void dce110_reset_hw_ctx_wrap(
 				pipe_need_reprogram(pipe_ctx_old, pipe_ctx)) {
 			struct clock_source *old_clk = pipe_ctx_old->clock_source;
 
-			core_link_disable_stream(pipe_ctx_old);
+			core_link_disable_stream(pipe_ctx_old, FREE_ACQUIRED_RESOURCE);
 			pipe_ctx_old->stream_res.tg->funcs->set_blank(pipe_ctx_old->stream_res.tg, true);
 			if (!hwss_wait_for_blank_complete(pipe_ctx_old->stream_res.tg)) {
 				dm_error("DC: failed to blank crtc!\n");

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

@@ -47,7 +47,7 @@ void dce110_set_displaymarks(
 
 void dce110_enable_stream(struct pipe_ctx *pipe_ctx);
 
-void dce110_disable_stream(struct pipe_ctx *pipe_ctx);
+void dce110_disable_stream(struct pipe_ctx *pipe_ctx, int option);
 
 void dce110_unblank_stream(struct pipe_ctx *pipe_ctx,
 		struct dc_link_settings *link_settings);

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

@@ -1025,7 +1025,7 @@ static void reset_back_end_for_pipe(
 	 * which is used by otg. Move disable_link after disable_crtc
 	 */
 	if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment))
-		core_link_disable_stream(pipe_ctx);
+		core_link_disable_stream(pipe_ctx, FREE_ACQUIRED_RESOURCE);
 
 	/* by upper caller loop, parent pipe: pipe0, will be reset last.
 	 * back end share by all pipes and will be disable only when disable

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

@@ -58,6 +58,11 @@ struct link_init_data {
 				TODO: remove it when DC is complete. */
 };
 
+enum {
+	FREE_ACQUIRED_RESOURCE = 0,
+	KEEP_ACQUIRED_RESOURCE = 1,
+};
+
 struct dc_link *link_create(const struct link_init_data *init_params);
 void link_destroy(struct dc_link **link);
 
@@ -72,7 +77,7 @@ void core_link_enable_stream(
 		struct dc_state *state,
 		struct pipe_ctx *pipe_ctx);
 
-void core_link_disable_stream(struct pipe_ctx *pipe_ctx);
+void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option);
 
 void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable);
 /********** DAL Core*********************/

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

@@ -134,7 +134,8 @@ struct hw_sequencer_funcs {
 
 	void (*enable_stream)(struct pipe_ctx *pipe_ctx);
 
-	void (*disable_stream)(struct pipe_ctx *pipe_ctx);
+	void (*disable_stream)(struct pipe_ctx *pipe_ctx,
+			int option);
 
 	void (*unblank_stream)(struct pipe_ctx *pipe_ctx,
 			struct dc_link_settings *link_settings);

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

@@ -164,4 +164,9 @@ bool pipe_need_reprogram(
 void resource_build_bit_depth_reduction_params(struct dc_stream_state *stream,
 		struct bit_depth_reduction_params *fmt_bit_depth);
 
+void update_audio_usage(
+		struct resource_context *res_ctx,
+		const struct resource_pool *pool,
+		struct audio *audio,
+		bool acquired);
 #endif /* DRIVERS_GPU_DRM_AMD_DC_DEV_DC_INC_RESOURCE_H_ */