Re: [PATCH] Revert "drm/i915: start adding dp mst audio"

[Jani Nikula <jani.nikula@intel.com>]

On Thu, 29 Sep 2016, Jani Nikula <jani.nikula@intel.com> wrote:
> On Thu, 29 Sep 2016, Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> wrote:
>> This reverts 'commit 3708d5e082c3 ("drm/i915: start adding dp mst audio")'
>> because it breaks MST multi-monitor setups on some platforms.
>>
>> Bug: https://bugs.freedesktop.org/show_bug.cgi?id=97907
>>
>> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
>> Reported-by: Kim Lidström <kim@dxtr.im>
>> Cc: Libin Yang <libin.yang@linux.intel.com>
>> Cc: Lyude <cpaul@redhat.com>
>> Cc: Jani Nikula <jani.nikula@intel.com>
>
> Pushed to drm-intel-next-queued, thanks for the patch.

Oh, I hope

commit f931894194b9395313d1c34f95ceb8d91f49790d
Author: Pandiyan, Dhinakaran <dhinakaran.pandiyan@intel.com>
Date:   Wed Sep 21 13:02:48 2016 -0700

    drm/i915/dp: DP audio API changes for MST

doesn't have a (functional) dependency on the reverted commit?

BR,
Jani.



>
> 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, 6 insertions(+), 53 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
>> index 1ba6795..4fb9d82 100644
>> --- a/drivers/gpu/drm/i915/i915_debugfs.c
>> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
>> @@ -2879,20 +2879,6 @@ 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)
>>  {
>> @@ -2935,10 +2921,7 @@ static void intel_connector_info(struct seq_file *m,
>>  	switch (connector->connector_type) {
>>  	case DRM_MODE_CONNECTOR_DisplayPort:
>>  	case DRM_MODE_CONNECTOR_eDP:
>> -		if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
>> -			intel_dp_mst_info(m, intel_connector);
>> -		else
>> -			intel_dp_info(m, intel_connector);
>> +		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 07cba6c..35f0b7c 100644
>> --- a/drivers/gpu/drm/i915/intel_ddi.c
>> +++ b/drivers/gpu/drm/i915/intel_ddi.c
>> @@ -2227,19 +2227,6 @@ 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)
>>  {
>> @@ -2305,8 +2292,11 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
>>  		break;
>>  	}
>>  
>> -	pipe_config->has_audio =
>> -		intel_ddi_is_audio_enabled(dev_priv, intel_crtc);
>> +	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;
>> +	}
>>  
>>  	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 2fc9f81..3ffbd69 100644
>> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
>> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
>> @@ -37,8 +37,6 @@ 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;
>> @@ -61,8 +59,6 @@ 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;
>> @@ -88,7 +84,6 @@ 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);
>> @@ -99,10 +94,6 @@ 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,
>> @@ -215,12 +206,6 @@ 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,
>> @@ -243,9 +228,6 @@ 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 c49a11e..30e3f49 100644
>> --- a/drivers/gpu/drm/i915/intel_drv.h
>> +++ b/drivers/gpu/drm/i915/intel_drv.h
>> @@ -1156,8 +1156,6 @@ 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
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