From: Anthony Wang <anthony1.wang@xxxxxxx>
[Why]
Some external displays with DP can use seamless boot, but their audio endpoints are
only enabled after hotplug.
On boot, these displays inherit UEFI timings without properly initializing audio.
[How]
Enable display audio when seamless booting with an external monitor over DP.
Signed-off-by: Anthony Wang <anthony1.wang@xxxxxxx>
Acked-by: Bindu Ramamurthy <bindu.r@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index fa5059f71727..81ad546b2098 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3258,6 +3258,16 @@ void core_link_enable_stream(
/* Do not touch link on seamless boot optimization. */
if (pipe_ctx->stream->apply_seamless_boot_optimization) {
pipe_ctx->stream->dpms_off = false;
+
+ /* Still enable stream features & audio on seamless boot for DP external displays */
+ if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT) {
+ enable_stream_features(pipe_ctx);
+ if (pipe_ctx->stream_res.audio != NULL) {
+ pipe_ctx->stream_res.stream_enc->funcs->dp_audio_enable(pipe_ctx->stream_res.stream_enc);
+ dc->hwss.enable_audio_stream(pipe_ctx);
+ }
+ }
+
#if defined(CONFIG_DRM_AMD_DC_HDCP)
update_psp_stream_config(pipe_ctx, false);
#endif
--
2.25.1
_______________________________________________
amd-gfx mailing list
amd-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
