From: Roy Chan <roy.chan@xxxxxxx>
[Why]
When HDCP is on, some display would introduce audio noise during
HDCP handling.
[How]
Mute before HDCP handling when disabling core link. Unmute after
HDCP when enabling core link.
Signed-off-by: Roy Chan <roy.chan@xxxxxxx>
Reviewed-by: Martin Leung <Martin.Leung@xxxxxxx>
Acked-by: Eryk Brol <eryk.brol@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
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 0052247b4b20..a901baf2aaef 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3270,8 +3270,6 @@ void core_link_enable_stream(
#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
#endif
- dc->hwss.enable_audio_stream(pipe_ctx);
-
/* turn off otg test pattern if enable */
if (pipe_ctx->stream_res.tg->funcs->set_test_pattern)
pipe_ctx->stream_res.tg->funcs->set_test_pattern(pipe_ctx->stream_res.tg,
@@ -3310,6 +3308,9 @@ void core_link_enable_stream(
#if defined(CONFIG_DRM_AMD_DC_HDCP)
update_psp_stream_config(pipe_ctx, false);
#endif
+
+ dc->hwss.enable_audio_stream(pipe_ctx);
+
} else { // if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment))
if (dc_is_dp_signal(pipe_ctx->stream->signal) ||
dc_is_virtual_signal(pipe_ctx->stream->signal))
@@ -3337,6 +3338,8 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
core_link_set_avmute(pipe_ctx, true);
}
+ dc->hwss.disable_audio_stream(pipe_ctx);
+
#if defined(CONFIG_DRM_AMD_DC_HDCP)
update_psp_stream_config(pipe_ctx, true);
#endif
--
2.25.1
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