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

Signed-off-by: Charlene Liu <charlene.liu@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>
hifive-unleashed-5.1
Charlene Liu 2017-12-13 13:41:42 -05:00 committed by Alex Deucher
parent 02d170e264
commit a8c40b0b5a
2 changed files with 14 additions and 1 deletions
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12
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -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 */

3
drivers/gpu/drm/amd/display/dc/dm_pp_smu.h
View File

@ -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