Commit a8c40b0b authored by Charlene Liu's avatar Charlene Liu Committed by Alex Deucher
Browse files

drm/amd/display: PME sw wa to support waking AZ D3 



Signed-off-by: default avatarCharlene Liu <charlene.liu@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 02d170e2

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

+12 −0
Original line number Diff line number Diff line
@@ -1788,7 +1788,19 @@ static enum dc_status enable_link( 
	}



	if (pipe_ctx->stream_res.audio && status == DC_OK) {

		struct dc *core_dc = pipe_ctx->stream->ctx->dc;

		/* notify audio driver for audio modes of monitor */

		struct pp_smu_funcs_rv *pp_smu = core_dc->res_pool->pp_smu;

		unsigned int i, num_audio = 1;

		for (i = 0; i < MAX_PIPES; i++) {

			/*current_state not updated yet*/

			if (core_dc->current_state->res_ctx.pipe_ctx[i].stream_res.audio != NULL)

				num_audio++;

		}

		if (num_audio == 1 && pp_smu != NULL && pp_smu->set_pme_wa_enable != NULL)

			/*this is the first audio. apply the PME w/a in order to wake AZ from D3*/

			pp_smu->set_pme_wa_enable(&pp_smu->pp_smu);



		pipe_ctx->stream_res.audio->funcs->az_enable(pipe_ctx->stream_res.audio);



		/* un-mute audio */

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

+2 −1
Original line number Diff line number Diff line
@@ -91,7 +91,8 @@ struct pp_smu_funcs_rv { 
	/* which SMU message?  are reader and writer WM separate SMU msg? */

	void (*set_wm_ranges)(struct pp_smu *pp,

			struct pp_smu_wm_range_sets *ranges);



	/* PME w/a */

	void (*set_pme_wa_enable)(struct pp_smu *pp);

};



#if 0

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