On Tue, 15 Aug 2023, Vinod Govindapillai <[email protected]> wrote:
> Extend the SDP split audio config for DP-MST
>
> Signed-off-by: Vinod Govindapillai <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c     | 2 +-
>  drivers/gpu/drm/i915/display/intel_dp.h     | 4 ++++
>  drivers/gpu/drm/i915/display/intel_dp_mst.c | 7 +++----
>  3 files changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 0eb072a78d44..269828e22437 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2233,7 +2233,7 @@ intel_dp_compute_output_format(struct intel_encoder 
> *encoder,
>       return ret;
>  }
>  
> -static void
> +void
>  intel_dp_audio_compute_config(struct intel_encoder *encoder,
>                             struct intel_crtc_state *pipe_config,
>                             struct drm_connector_state *conn_state,
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.h 
> b/drivers/gpu/drm/i915/display/intel_dp.h
> index e7b515b685ac..b8516a34cfaf 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.h
> +++ b/drivers/gpu/drm/i915/display/intel_dp.h
> @@ -65,6 +65,10 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
>                               struct link_config_limits *limits,
>                               int timeslots,
>                               bool recompute_pipe_bpp);
> +void intel_dp_audio_compute_config(struct intel_encoder *encoder,
> +                                struct intel_crtc_state *pipe_config,
> +                                struct drm_connector_state *conn_state,
> +                                struct intel_dp *intel_dp);
>  bool intel_dp_has_hdmi_sink(struct intel_dp *intel_dp);
>  bool intel_dp_is_edp(struct intel_dp *intel_dp);
>  bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state);
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c 
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index 8881cfd41ee7..05228c006a1b 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -309,10 +309,6 @@ static int intel_dp_mst_compute_config(struct 
> intel_encoder *encoder,
>       pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
>       pipe_config->has_pch_encoder = false;
>  
> -     pipe_config->has_audio =
> -             intel_dp_has_audio(encoder, conn_state, intel_dp) &&
> -             intel_audio_compute_config(encoder, pipe_config, conn_state);

Yeah, so there shouldn't be an intemediate step where you call
intel_dp_has_audio() directly from mst code. You just switch from the
current code to calling intel_dp_audio_compute_config().

BR,
Jani.

> -
>       /*
>        * for MST we always configure max link bw - the spec doesn't
>        * seem to suggest we should do otherwise.
> @@ -375,6 +371,7 @@ static int intel_dp_mst_compute_config(struct 
> intel_encoder *encoder,
>               pipe_config->lane_lat_optim_mask =
>                       
> bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
>  
> +     intel_dp_audio_compute_config(encoder, pipe_config, conn_state, 
> intel_dp);
>       intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
>  
>       return 0;
> @@ -779,6 +776,8 @@ static void intel_mst_enable_dp(struct intel_atomic_state 
> *state,
>               intel_de_rmw(dev_priv, CHICKEN_TRANS(trans), 0,
>                            FECSTALL_DIS_DPTSTREAM_DPTTG);
>  
> +     intel_audio_sdp_split_update(pipe_config);
> +
>       intel_enable_transcoder(pipe_config);
>  
>       intel_crtc_vblank_on(pipe_config);

-- 
Jani Nikula, Intel Open Source Graphics Center

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