drm/amd/display: Disable HBR audio for DP2 for certain ASICs

[Description]
Due to a HW bug, HBR audio is not supported for
DP2 encoders for certain ASICs.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -466,6 +466,7 @@ struct dc_config {
 	bool use_assr_psp_message;
 	bool support_edp0_on_dp1;
 	unsigned int enable_fpo_flicker_detection;
+	bool disable_hbr_audio_dp2;
 };
 
 enum visual_confirm {

drivers/gpu/drm/amd/display/dc/dce/dce_audio.c

@@ -630,6 +630,11 @@ void dce_aud_az_enable(struct audio *audio)
 			audio->inst, value);
 }
 
+void dce_aud_az_disable_hbr_audio(struct audio *audio)
+{
+	set_high_bit_rate_capable(audio, false);
+}
+
 void dce_aud_az_disable(struct audio *audio)
 {
 	uint32_t value;
@@ -1293,6 +1298,7 @@ static const struct audio_funcs funcs = {
 	.az_enable = dce_aud_az_enable,
 	.az_disable = dce_aud_az_disable,
 	.az_configure = dce_aud_az_configure,
+	.az_disable_hbr_audio = dce_aud_az_disable_hbr_audio,
 	.destroy = dce_aud_destroy,
 };
 

drivers/gpu/drm/amd/display/dc/dce/dce_audio.h

@@ -166,6 +166,7 @@ void dce_aud_hw_init(struct audio *audio);
 
 void dce_aud_az_enable(struct audio *audio);
 void dce_aud_az_disable(struct audio *audio);
+void dce_aud_az_disable_hbr_audio(struct audio *audio);
 
 void dce_aud_az_configure(struct audio *audio,
 	enum signal_type signal,

drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c

@@ -1597,6 +1597,11 @@ enum dc_status dce110_apply_single_controller_ctx_to_hw(
 				&audio_output.crtc_info,
 				&pipe_ctx->stream->audio_info,
 				&audio_output.dp_link_info);
+
+		if (dc->config.disable_hbr_audio_dp2)
+			if (pipe_ctx->stream_res.audio->funcs->az_disable_hbr_audio &&
+					dc->link_srv->dp_is_128b_132b_signal(pipe_ctx))
+				pipe_ctx->stream_res.audio->funcs->az_disable_hbr_audio(pipe_ctx->stream_res.audio);
 	}
 
 	/* make sure no pipes syncd to the pipe being enabled */

drivers/gpu/drm/amd/display/dc/inc/hw/audio.h

@@ -46,6 +46,8 @@ struct audio_funcs {
 		const struct audio_info *audio_info,
 		const struct audio_dp_link_info *dp_link_info);
 
+	void (*az_disable_hbr_audio)(struct audio *audio);
+
 	void (*wall_dto_setup)(struct audio *audio,
 		enum signal_type signal,
 		const struct audio_crtc_info *crtc_info,

drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c

@@ -1948,6 +1948,7 @@ static bool dcn31_resource_construct(
 
 	/* Use pipe context based otg sync logic */
 	dc->config.use_pipe_ctx_sync_logic = true;
+	dc->config.disable_hbr_audio_dp2 = true;
 
 	/* read VBIOS LTTPR caps */
 	{

drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c

@@ -2220,6 +2220,7 @@ static bool dcn32_resource_construct(
 
 	dc->config.dc_mode_clk_limit_support = true;
 	dc->config.enable_windowed_mpo_odm = true;
+	dc->config.disable_hbr_audio_dp2 = true;
 	/* read VBIOS LTTPR caps */
 	{
 		if (ctx->dc_bios->funcs->get_lttpr_caps) {

drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c

@@ -1780,6 +1780,7 @@ static bool dcn321_resource_construct(
 
 	dc->config.dc_mode_clk_limit_support = true;
 	dc->config.enable_windowed_mpo_odm = true;
+	dc->config.disable_hbr_audio_dp2 = true;
 	/* read VBIOS LTTPR caps */
 	{
 		if (ctx->dc_bios->funcs->get_lttpr_caps) {

drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c

@@ -1899,6 +1899,7 @@ static bool dcn35_resource_construct(
 	/* Use pipe context based otg sync logic */
 	dc->config.use_pipe_ctx_sync_logic = true;
 
+	dc->config.disable_hbr_audio_dp2 = true;
 	/* read VBIOS LTTPR caps */
 	{
 		if (ctx->dc_bios->funcs->get_lttpr_caps) {