drm/amd/display: try to find matching audio inst for enc inst first

[Description]
in eDP+ HDMI/DP clone or extended configuration, audio inst changed from inst 1 to inst0.
No failure related this though, just playback device endpoint inst changed.
Also  remove one addition register read.

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>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 655e08d..546fe99 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1449,11 +1449,16 @@ static struct stream_encoder *find_first_free_match_stream_enc_for_link(
 
 static struct audio *find_first_free_audio(
                struct resource_context *res_ctx,
-               const struct resource_pool *pool)
+               const struct resource_pool *pool,
+               enum engine_id id)
 {
        int i;
        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, find the matching inst*/
+                       if (id != i)
+                               continue;
+
                        return pool->audios[i];
                }
        }
@@ -1702,7 +1707,7 @@ enum dc_status resource_map_pool_resources(
            dc_is_audio_capable_signal(pipe_ctx->stream->signal) &&
            stream->audio_info.mode_count) {
                pipe_ctx->stream_res.audio = find_first_free_audio(
-               &context->res_ctx, pool);
+               &context->res_ctx, pool, pipe_ctx->stream_res.stream_enc->id);
 
                /*
                 * Audio assigned in order first come first get.

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index c04d67d..e42b6eb 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -87,10 +87,8 @@ static void dce110_update_generic_info_packet(
         */
        uint32_t max_retries = 50;
 
-       REG_GET(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, &regval);
        /*we need turn on clock before programming AFMT block*/
-       if (regval != 1)
-               REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1);
+       REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1);
 
        if (REG(AFMT_VBI_PACKET_CONTROL1)) {
                if (packet_index >= 8)