On Tue, 20 Sep 2016, Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx> wrote: > From: Libin Yang <libin.yang@xxxxxxxxxxxxxxx> > > (This patch is developed by Dave Airlie <airlied@xxxxxxxxxx> originally) > > This patch adds support for DP MST audio in i915. > > Enable audio codec when DP MST is enabled if has_audio flag is set. > Disable audio codec when DP MST is disabled if has_audio flag is set. > > Another separated patches to support DP MST audio will be implemented > in audio driver. > > v2: > Rebased. > > Signed-off-by: Libin Yang <libin.yang@xxxxxxxxxxxxxxx> > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx> > Reviewed-by: Lyude <cpaul@xxxxxxxxxx> This patch causes a regression on a DP MST multi-monitor setup: https://bugs.freedesktop.org/show_bug.cgi?id=97907 BR, Jani. > --- > drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++- > drivers/gpu/drm/i915/intel_ddi.c | 20 +++++++++++++++----- > drivers/gpu/drm/i915/intel_dp_mst.c | 18 ++++++++++++++++++ > drivers/gpu/drm/i915/intel_drv.h | 2 ++ > 4 files changed, 53 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c > index 27b0e34..1384da5 100644 > --- a/drivers/gpu/drm/i915/i915_debugfs.c > +++ b/drivers/gpu/drm/i915/i915_debugfs.c > @@ -2865,6 +2865,20 @@ static void intel_dp_info(struct seq_file *m, > &intel_dp->aux); > } > > +static void intel_dp_mst_info(struct seq_file *m, > + struct intel_connector *intel_connector) > +{ > + struct intel_encoder *intel_encoder = intel_connector->encoder; > + struct intel_dp_mst_encoder *intel_mst = > + enc_to_mst(&intel_encoder->base); > + struct intel_digital_port *intel_dig_port = intel_mst->primary; > + struct intel_dp *intel_dp = &intel_dig_port->dp; > + bool has_audio = drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, > + intel_connector->port); > + > + seq_printf(m, "\taudio support: %s\n", yesno(has_audio)); > +} > + > static void intel_hdmi_info(struct seq_file *m, > struct intel_connector *intel_connector) > { > @@ -2907,7 +2921,10 @@ static void intel_connector_info(struct seq_file *m, > switch (connector->connector_type) { > case DRM_MODE_CONNECTOR_DisplayPort: > case DRM_MODE_CONNECTOR_eDP: > - intel_dp_info(m, intel_connector); > + if (intel_encoder->type == INTEL_OUTPUT_DP_MST) > + intel_dp_mst_info(m, intel_connector); > + else > + intel_dp_info(m, intel_connector); > break; > case DRM_MODE_CONNECTOR_LVDS: > if (intel_encoder->type == INTEL_OUTPUT_LVDS) > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c > index daf3adb..24275e9 100644 > --- a/drivers/gpu/drm/i915/intel_ddi.c > +++ b/drivers/gpu/drm/i915/intel_ddi.c > @@ -2230,6 +2230,19 @@ void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp) > udelay(600); > } > > +bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv, > + struct intel_crtc *intel_crtc) > +{ > + u32 temp; > + > + if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) { > + temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); > + if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe)) > + return true; > + } > + return false; > +} > + > void intel_ddi_get_config(struct intel_encoder *encoder, > struct intel_crtc_state *pipe_config) > { > @@ -2295,11 +2308,8 @@ void intel_ddi_get_config(struct intel_encoder *encoder, > break; > } > > - if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) { > - temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); > - if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe)) > - pipe_config->has_audio = true; > - } > + pipe_config->has_audio = > + intel_ddi_is_audio_enabled(dev_priv, intel_crtc); > > if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.bpp && > pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) { > diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c > index 3ffbd69..2fc9f81 100644 > --- a/drivers/gpu/drm/i915/intel_dp_mst.c > +++ b/drivers/gpu/drm/i915/intel_dp_mst.c > @@ -37,6 +37,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, > struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); > struct intel_digital_port *intel_dig_port = intel_mst->primary; > struct intel_dp *intel_dp = &intel_dig_port->dp; > + struct intel_connector *connector = > + to_intel_connector(conn_state->connector); > struct drm_atomic_state *state; > int bpp; > int lane_count, slots; > @@ -59,6 +61,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, > > state = pipe_config->base.state; > > + if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, connector->port)) > + pipe_config->has_audio = true; > mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp); > > pipe_config->pbn = mst_pbn; > @@ -84,6 +88,7 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder, > struct intel_dp *intel_dp = &intel_dig_port->dp; > struct intel_connector *connector = > to_intel_connector(old_conn_state->connector); > + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); > int ret; > > DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); > @@ -94,6 +99,10 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder, > if (ret) { > DRM_ERROR("failed to update payload %d\n", ret); > } > + if (old_crtc_state->has_audio) { > + intel_audio_codec_disable(encoder); > + intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO); > + } > } > > static void intel_mst_post_disable_dp(struct intel_encoder *encoder, > @@ -206,6 +215,12 @@ static void intel_mst_enable_dp(struct intel_encoder *encoder, > ret = drm_dp_check_act_status(&intel_dp->mst_mgr); > > ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr); > + if (pipe_config->has_audio) { > + DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", > + pipe_name(intel_mst->pipe)); > + intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO); > + intel_audio_codec_enable(encoder); > + } > } > > static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, > @@ -228,6 +243,9 @@ static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, > enum transcoder cpu_transcoder = pipe_config->cpu_transcoder; > u32 temp, flags = 0; > > + pipe_config->has_audio = > + intel_ddi_is_audio_enabled(dev_priv, crtc); > + > temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); > if (temp & TRANS_DDI_PHSYNC) > flags |= DRM_MODE_FLAG_PHSYNC; > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h > index cf92bc0..8bb5358 100644 > --- a/drivers/gpu/drm/i915/intel_drv.h > +++ b/drivers/gpu/drm/i915/intel_drv.h > @@ -1155,6 +1155,8 @@ bool intel_ddi_pll_select(struct intel_crtc *crtc, > void intel_ddi_set_pipe_settings(struct drm_crtc *crtc); > void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp); > bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector); > +bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv, > + struct intel_crtc *intel_crtc); > void intel_ddi_get_config(struct intel_encoder *encoder, > struct intel_crtc_state *pipe_config); > struct intel_encoder * -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
