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Hi Jani
From: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Sent: Tuesday, August 8, 2023 4:23 PM To: Govindapillai, Vinod <vinod.govindapillai@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx <intel-gfx@xxxxxxxxxxxxxxxxxxxxx> Subject: Re: [PATCH 1/2] drm/i915/display: optimize DP 2.0 sdp split update config On Fri, 04 Aug 2023, Vinod Govindapillai <vinod.govindapillai@xxxxxxxxx> wrote:
> Optimize DP 2 SDP split config update so that DP-MST code > path can be supported as well. What's the optimization? I meant refactoring!
Okay I will have a look at updating this as per your comments
BR
vinod
> > Signed-off-by: Vinod Govindapillai <vinod.govindapillai@xxxxxxxxx> > --- > drivers/gpu/drm/i915/display/intel_audio.c | 6 +++--- > drivers/gpu/drm/i915/display/intel_audio.h | 3 +-- > drivers/gpu/drm/i915/display/intel_ddi.c | 3 --- > drivers/gpu/drm/i915/display/intel_display.c | 3 +++ > drivers/gpu/drm/i915/display/intel_dp.c | 16 +++++++--------- > drivers/gpu/drm/i915/display/intel_dp.h | 2 ++ > 6 files changed, 16 insertions(+), 17 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c > index 3d9c9b4f27f8..19605264a35c 100644 > --- a/drivers/gpu/drm/i915/display/intel_audio.c > +++ b/drivers/gpu/drm/i915/display/intel_audio.c > @@ -759,10 +759,10 @@ static void ibx_audio_codec_enable(struct intel_encoder *encoder, > mutex_unlock(&i915->display.audio.mutex); > } > > -void intel_audio_sdp_split_update(struct intel_encoder *encoder, > - const struct intel_crtc_state *crtc_state) > +void intel_audio_sdp_split_update(const struct intel_crtc_state *crtc_state) > { > - struct drm_i915_private *i915 = to_i915(encoder->base.dev); > + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); > + struct drm_i915_private *i915 = to_i915(crtc->base.dev); > enum transcoder trans = crtc_state->cpu_transcoder; > > if (HAS_DP20(i915)) > diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h > index 07d034a981e9..9327954b801e 100644 > --- a/drivers/gpu/drm/i915/display/intel_audio.h > +++ b/drivers/gpu/drm/i915/display/intel_audio.h > @@ -29,7 +29,6 @@ void intel_audio_cdclk_change_pre(struct drm_i915_private *dev_priv); > void intel_audio_cdclk_change_post(struct drm_i915_private *dev_priv); > void intel_audio_init(struct drm_i915_private *dev_priv); > void intel_audio_deinit(struct drm_i915_private *dev_priv); > -void intel_audio_sdp_split_update(struct intel_encoder *encoder, > - const struct intel_crtc_state *crtc_state); > +void intel_audio_sdp_split_update(const struct intel_crtc_state *crtc_state); > > #endif /* __INTEL_AUDIO_H__ */ > diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c > index 3cd2191fa794..542bc521669a 100644 > --- a/drivers/gpu/drm/i915/display/intel_ddi.c > +++ b/drivers/gpu/drm/i915/display/intel_ddi.c > @@ -3247,9 +3247,6 @@ static void intel_enable_ddi(struct intel_atomic_state *state, > if (!intel_crtc_is_bigjoiner_slave(crtc_state)) > intel_ddi_enable_transcoder_func(encoder, crtc_state); > > - /* Enable/Disable DP2.0 SDP split config before transcoder */ > - intel_audio_sdp_split_update(encoder, crtc_state); > - > intel_enable_transcoder(crtc_state); > > intel_crtc_vblank_on(crtc_state); > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c > index 43cba98f7753..54afc559f522 100644 > --- a/drivers/gpu/drm/i915/display/intel_display.c > +++ b/drivers/gpu/drm/i915/display/intel_display.c > @@ -402,6 +402,9 @@ void intel_enable_transcoder(const struct intel_crtc_state *new_crtc_state) > > assert_planes_disabled(crtc); > > + /* Enable/Disable DP2.0 SDP split config before transcoder */ > + intel_audio_sdp_split_update(new_crtc_state); The call belongs in the encoder code. Search for "audio" in intel_display.c; there's almost nothing. > + > /* > * A pipe without a PLL won't actually be able to drive bits from > * a plane. On ILK+ the pipe PLLs are integrated, so we don't > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c > index 03675620e3ea..4a5be800715c 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -2232,17 +2232,15 @@ intel_dp_compute_output_format(struct intel_encoder *encoder, > return ret; > } > > -static void > -intel_dp_audio_compute_config(struct intel_encoder *encoder, > - struct intel_crtc_state *pipe_config, > - struct drm_connector_state *conn_state) > +void intel_dp_audio_compute_config(struct intel_crtc_state *pipe_config, > + struct drm_connector_state *conn_state) > { > - struct drm_i915_private *i915 = to_i915(encoder->base.dev); > + struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); > + struct drm_i915_private *i915 = to_i915(crtc->base.dev); > struct drm_connector *connector = conn_state->connector; > > - pipe_config->sdp_split_enable = > - intel_dp_has_audio(encoder, conn_state) && > - intel_dp_is_uhbr(pipe_config); > + pipe_config->sdp_split_enable = pipe_config->has_audio && > + intel_dp_is_uhbr(pipe_config); Hmmh, I don't get this. I guess the neatest thing to do would be to have a single intel_dp_audio_compute_config() that would do everything needed for DP and DP MST, as well as call intel_audio_compute_config(). It think it's somewhat confusing that the compute config hooks call both intel_audio_compute_config() and intel_dp_audio_compute_config(). Seems like the latter should call the former. BR, Jani. > > drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] SDP split enable: %s\n", > connector->base.id, connector->name, > @@ -2334,7 +2332,7 @@ intel_dp_compute_config(struct intel_encoder *encoder, > adjusted_mode->crtc_clock /= n; > } > > - intel_dp_audio_compute_config(encoder, pipe_config, conn_state); > + intel_dp_audio_compute_config(pipe_config, conn_state); > > intel_link_compute_m_n(output_bpp, > pipe_config->lane_count, > diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h > index 22099de3ca45..1a73820204ae 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.h > +++ b/drivers/gpu/drm/i915/display/intel_dp.h > @@ -65,6 +65,8 @@ 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_crtc_state *pipe_config, > + struct drm_connector_state *conn_state); > 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); -- Jani Nikula, Intel Open Source Graphics Center |
