Prep. for DP audio MST support

Prep. for DP audio MST support

[Dhinakaran Pandiyan]

This series lays the groundwork for more DP MST audio work that will
follow. Patch 1 got possibly reverted because Patch 3 was missing.

The APIs between i915 and audio drivers have to modified so that the audio
drivers can identify different displays connected to a port. The changes
introduced in Patch 2 will make that easy.

Dhinakaran Pandiyan(2)
[PATCH 2/3] drm/i915: Move audio_connector to intel_encoder
[PATCH 3/3] drm/i915: Fix enc_to_dig_port for MST encoders

Libin Yang(1)
[PATCH 1/3] drm/i915: start adding dp mst audio
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[PATCH 1/3] drm/i915: start adding dp mst audio

[Dhinakaran Pandiyan]

From: Libin Yang <libin.yang@linux.intel.com>

(This patch is developed by Dave Airlie <airlied@redhat.com> 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.

Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++-
 drivers/gpu/drm/i915/intel_ddi.c    | 20 +++++++++++++++-----
 drivers/gpu/drm/i915/intel_dp_mst.c | 21 +++++++++++++++++++++
 drivers/gpu/drm/i915/intel_drv.h    |  2 ++
 4 files changed, 56 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 531ca02..56e38b1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2961,6 +2961,20 @@ static void intel_dp_info(struct seq_file *m,
 		intel_panel_info(m, &intel_connector->panel);
 }
 
+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)
 {
@@ -3003,7 +3017,10 @@ 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 dd1d6fe..cbb4e7a 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2154,6 +2154,19 @@ void intel_ddi_fdi_disable(struct drm_crtc *crtc)
 	I915_WRITE(FDI_RX_CTL(PIPE_A), val);
 }
 
+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)
 {
@@ -2219,11 +2232,8 @@ 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 68a005d..84dbb50 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -76,6 +76,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
 		return false;
 	}
 
+	if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found->port))
+		pipe_config->has_audio = true;
 	mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
 
 	pipe_config->pbn = mst_pbn;
@@ -97,6 +99,10 @@ static void intel_mst_disable_dp(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 drm_device *dev = encoder->base.dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_crtc *crtc = encoder->base.crtc;
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	int ret;
 
 	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
@@ -107,6 +113,10 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder)
 	if (ret) {
 		DRM_ERROR("failed to update payload %d\n", ret);
 	}
+	if (intel_crtc->config->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)
@@ -207,7 +217,9 @@ static void intel_mst_enable_dp(struct intel_encoder *encoder)
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
 	struct drm_device *dev = intel_dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 	enum port port = intel_dig_port->port;
+	enum pipe pipe = crtc->pipe;
 	int ret;
 
 	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
@@ -222,6 +234,12 @@ 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 (crtc->config->has_audio) {
+		DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
+				 pipe_name(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,
@@ -245,6 +263,9 @@ 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 e74d851..f73de63c 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1123,6 +1123,8 @@ 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);
 void intel_ddi_fdi_disable(struct drm_crtc *crtc);
+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 *
-- 
2.5.0

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[PATCH 2/3] drm/i915: Move audio_connector to intel_encoder

[Dhinakaran Pandiyan]

With DP MST, a digital_port can carry more than one audio stream. Hence,
more than one audio_connector needs to be attached to intel_digital_port in
such cases. However, each stream is associated with an unique encoder. So,
instead of creating an array of audio_connectors per port, move
audio_connector from struct intel_digital_port to struct intel_encoder.
This also simplifies access to the right audio_connector from codec
functions in intel_audio.c that receive intel_encoder.

Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
---
 drivers/gpu/drm/i915/intel_audio.c | 10 ++++------
 drivers/gpu/drm/i915/intel_drv.h   |  4 ++--
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index 6700a7b..8c493de 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -523,7 +523,7 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder)
 						     adjusted_mode);
 
 	mutex_lock(&dev_priv->av_mutex);
-	intel_dig_port->audio_connector = connector;
+	intel_encoder->audio_connector = connector;
 	/* referred in audio callbacks */
 	dev_priv->dig_port_map[port] = intel_encoder;
 	mutex_unlock(&dev_priv->av_mutex);
@@ -552,7 +552,7 @@ void intel_audio_codec_disable(struct intel_encoder *intel_encoder)
 		dev_priv->display.audio_codec_disable(intel_encoder);
 
 	mutex_lock(&dev_priv->av_mutex);
-	intel_dig_port->audio_connector = NULL;
+	intel_encoder->audio_connector = NULL;
 	dev_priv->dig_port_map[port] = NULL;
 	mutex_unlock(&dev_priv->av_mutex);
 
@@ -707,7 +707,6 @@ static int i915_audio_component_get_eld(struct device *dev, int port,
 {
 	struct drm_i915_private *dev_priv = dev_to_i915(dev);
 	struct intel_encoder *intel_encoder;
-	struct intel_digital_port *intel_dig_port;
 	const u8 *eld;
 	int ret = -EINVAL;
 
@@ -716,10 +715,9 @@ static int i915_audio_component_get_eld(struct device *dev, int port,
 	/* intel_encoder might be NULL for DP MST */
 	if (intel_encoder) {
 		ret = 0;
-		intel_dig_port = enc_to_dig_port(&intel_encoder->base);
-		*enabled = intel_dig_port->audio_connector != NULL;
+		*enabled = intel_encoder->audio_connector != NULL;
 		if (*enabled) {
-			eld = intel_dig_port->audio_connector->eld;
+			eld = intel_encoder->audio_connector->eld;
 			ret = drm_eld_size(eld);
 			memcpy(buf, eld, min(max_bytes, ret));
 		}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f73de63c..45020d2 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -220,6 +220,8 @@ struct intel_encoder {
 	void (*suspend)(struct intel_encoder *);
 	int crtc_mask;
 	enum hpd_pin hpd_pin;
+	/* for communication with audio component; protected by av_mutex */
+	const struct drm_connector *audio_connector;
 };
 
 struct intel_panel {
@@ -929,8 +931,6 @@ struct intel_digital_port {
 	enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
 	bool release_cl2_override;
 	uint8_t max_lanes;
-	/* for communication with audio component; protected by av_mutex */
-	const struct drm_connector *audio_connector;
 };
 
 struct intel_dp_mst_encoder {
-- 
2.5.0

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[PATCH 3/3] drm/i915: Fix enc_to_dig_port for MST encoders

[Dhinakaran Pandiyan]

When a MST encoder is passed to enc_to_dig_port(), the container_of() macro
does not return the digital port. Handle this by returning the member
"primary" in "struct intel_dp_mst_encoder"

Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
---
 drivers/gpu/drm/i915/intel_drv.h | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 45020d2..66af444 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1023,18 +1023,22 @@ intel_attached_encoder(struct drm_connector *connector)
 	return to_intel_connector(connector)->encoder;
 }
 
-static inline struct intel_digital_port *
-enc_to_dig_port(struct drm_encoder *encoder)
-{
-	return container_of(encoder, struct intel_digital_port, base.base);
-}
-
 static inline struct intel_dp_mst_encoder *
 enc_to_mst(struct drm_encoder *encoder)
 {
 	return container_of(encoder, struct intel_dp_mst_encoder, base.base);
 }
 
+static inline struct intel_digital_port *
+enc_to_dig_port(struct drm_encoder *encoder)
+{
+	if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
+		return enc_to_mst(encoder)->primary;
+	else
+		return container_of(encoder, struct intel_digital_port,
+				    base.base);
+}
+
 static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
 {
 	return &enc_to_dig_port(encoder)->dp;
-- 
2.5.0

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Re: Prep. for DP audio MST support

[Yang, Libin]

Add Takashi who is the audio driver maintainer.

Dhinakaran is working on gfx driver support for DP MST.


> -----Original Message-----
> From: Pandiyan, Dhinakaran
> Sent: Wednesday, August 3, 2016 9:47 AM
> To: intel-gfx@lists.freedesktop.org
> Cc: cpaul@redhat.com; ville.syrjala@linux.intel.com; Yang, Libin
> <libin.yang@intel.com>
> Subject: Prep. for DP audio MST support
> 
> This series lays the groundwork for more DP MST audio work that will follow.
> Patch 1 got possibly reverted because Patch 3 was missing.
> 
> The APIs between i915 and audio drivers have to modified so that the audio
> drivers can identify different displays connected to a port. The changes
> introduced in Patch 2 will make that easy.
> 
> Dhinakaran Pandiyan(2)
> [PATCH 2/3] drm/i915: Move audio_connector to intel_encoder [PATCH 3/3]
> drm/i915: Fix enc_to_dig_port for MST encoders
> 
> Libin Yang(1)
> [PATCH 1/3] drm/i915: start adding dp mst audio
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Re: [PATCH 1/3] drm/i915: start adding dp mst audio

[Yang, Libin]

Add Takashi

Regards,
Libin


> -----Original Message-----
> From: Pandiyan, Dhinakaran
> Sent: Wednesday, August 3, 2016 9:47 AM
> To: intel-gfx@lists.freedesktop.org
> Cc: cpaul@redhat.com; ville.syrjala@linux.intel.com; Yang, Libin
> <libin.yang@intel.com>; Libin Yang <libin.yang@linux.intel.com>
> Subject: [PATCH 1/3] drm/i915: start adding dp mst audio
> 
> From: Libin Yang <libin.yang@linux.intel.com>
> 
> (This patch is developed by Dave Airlie <airlied@redhat.com> 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.
> 
> Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++-
>  drivers/gpu/drm/i915/intel_ddi.c    | 20 +++++++++++++++-----
>  drivers/gpu/drm/i915/intel_dp_mst.c | 21 +++++++++++++++++++++
>  drivers/gpu/drm/i915/intel_drv.h    |  2 ++
>  4 files changed, 56 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 531ca02..56e38b1 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2961,6 +2961,20 @@ static void intel_dp_info(struct seq_file *m,
>  		intel_panel_info(m, &intel_connector->panel);  }
> 
> +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)  { @@ -
> 3003,7 +3017,10 @@ 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 dd1d6fe..cbb4e7a 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -2154,6 +2154,19 @@ void intel_ddi_fdi_disable(struct drm_crtc *crtc)
>  	I915_WRITE(FDI_RX_CTL(PIPE_A), val);
>  }
> 
> +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)  { @@ -2219,11
> +2232,8 @@ 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 68a005d..84dbb50 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -76,6 +76,8 @@ static bool intel_dp_mst_compute_config(struct
> intel_encoder *encoder,
>  		return false;
>  	}
> 
> +	if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found->port))
> +		pipe_config->has_audio = true;
>  	mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
> 
>  	pipe_config->pbn = mst_pbn;
> @@ -97,6 +99,10 @@ static void intel_mst_disable_dp(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 drm_device *dev = encoder->base.dev;
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +	struct drm_crtc *crtc = encoder->base.crtc;
> +	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
>  	int ret;
> 
>  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); @@ -107,6
> +113,10 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder)
>  	if (ret) {
>  		DRM_ERROR("failed to update payload %d\n", ret);
>  	}
> +	if (intel_crtc->config->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) @@ -
> 207,7 +217,9 @@ static void intel_mst_enable_dp(struct intel_encoder
> *encoder)
>  	struct intel_dp *intel_dp = &intel_dig_port->dp;
>  	struct drm_device *dev = intel_dig_port->base.base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
> +	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
>  	enum port port = intel_dig_port->port;
> +	enum pipe pipe = crtc->pipe;
>  	int ret;
> 
>  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); @@ -222,6
> +234,12 @@ 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 (crtc->config->has_audio) {
> +		DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
> +				 pipe_name(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,
> @@ -245,6 +263,9 @@ 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 e74d851..f73de63c 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1123,6 +1123,8 @@ 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);
> void intel_ddi_fdi_disable(struct drm_crtc *crtc);
> +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 *
> --
> 2.5.0

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Re: [PATCH 2/3] drm/i915: Move audio_connector to intel_encoder

[Yang, Libin]

Add Takashi

Regards,
Libin


> -----Original Message-----
> From: Pandiyan, Dhinakaran
> Sent: Wednesday, August 3, 2016 9:47 AM
> To: intel-gfx@lists.freedesktop.org
> Cc: cpaul@redhat.com; ville.syrjala@linux.intel.com; Yang, Libin
> <libin.yang@intel.com>; Pandiyan, Dhinakaran
> <dhinakaran.pandiyan@intel.com>
> Subject: [PATCH 2/3] drm/i915: Move audio_connector to intel_encoder
> 
> With DP MST, a digital_port can carry more than one audio stream. Hence,
> more than one audio_connector needs to be attached to intel_digital_port in
> such cases. However, each stream is associated with an unique encoder. So,
> instead of creating an array of audio_connectors per port, move
> audio_connector from struct intel_digital_port to struct intel_encoder.
> This also simplifies access to the right audio_connector from codec functions
> in intel_audio.c that receive intel_encoder.
> 
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_audio.c | 10 ++++------
>  drivers/gpu/drm/i915/intel_drv.h   |  4 ++--
>  2 files changed, 6 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_audio.c
> b/drivers/gpu/drm/i915/intel_audio.c
> index 6700a7b..8c493de 100644
> --- a/drivers/gpu/drm/i915/intel_audio.c
> +++ b/drivers/gpu/drm/i915/intel_audio.c
> @@ -523,7 +523,7 @@ void intel_audio_codec_enable(struct intel_encoder
> *intel_encoder)
>  						     adjusted_mode);
> 
>  	mutex_lock(&dev_priv->av_mutex);
> -	intel_dig_port->audio_connector = connector;
> +	intel_encoder->audio_connector = connector;
>  	/* referred in audio callbacks */
>  	dev_priv->dig_port_map[port] = intel_encoder;
>  	mutex_unlock(&dev_priv->av_mutex);
> @@ -552,7 +552,7 @@ void intel_audio_codec_disable(struct intel_encoder
> *intel_encoder)
>  		dev_priv->display.audio_codec_disable(intel_encoder);
> 
>  	mutex_lock(&dev_priv->av_mutex);
> -	intel_dig_port->audio_connector = NULL;
> +	intel_encoder->audio_connector = NULL;
>  	dev_priv->dig_port_map[port] = NULL;
>  	mutex_unlock(&dev_priv->av_mutex);
> 
> @@ -707,7 +707,6 @@ static int i915_audio_component_get_eld(struct
> device *dev, int port,  {
>  	struct drm_i915_private *dev_priv = dev_to_i915(dev);
>  	struct intel_encoder *intel_encoder;
> -	struct intel_digital_port *intel_dig_port;
>  	const u8 *eld;
>  	int ret = -EINVAL;
> 
> @@ -716,10 +715,9 @@ static int i915_audio_component_get_eld(struct
> device *dev, int port,
>  	/* intel_encoder might be NULL for DP MST */
>  	if (intel_encoder) {
>  		ret = 0;
> -		intel_dig_port = enc_to_dig_port(&intel_encoder->base);
> -		*enabled = intel_dig_port->audio_connector != NULL;
> +		*enabled = intel_encoder->audio_connector != NULL;
>  		if (*enabled) {
> -			eld = intel_dig_port->audio_connector->eld;
> +			eld = intel_encoder->audio_connector->eld;
>  			ret = drm_eld_size(eld);
>  			memcpy(buf, eld, min(max_bytes, ret));
>  		}
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index f73de63c..45020d2 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -220,6 +220,8 @@ struct intel_encoder {
>  	void (*suspend)(struct intel_encoder *);
>  	int crtc_mask;
>  	enum hpd_pin hpd_pin;
> +	/* for communication with audio component; protected by av_mutex
> */
> +	const struct drm_connector *audio_connector;
>  };
> 
>  struct intel_panel {
> @@ -929,8 +931,6 @@ struct intel_digital_port {
>  	enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
>  	bool release_cl2_override;
>  	uint8_t max_lanes;
> -	/* for communication with audio component; protected by av_mutex
> */
> -	const struct drm_connector *audio_connector;
>  };
> 
>  struct intel_dp_mst_encoder {
> --
> 2.5.0

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Re: [PATCH 3/3] drm/i915: Fix enc_to_dig_port for MST encoders

[Yang, Libin]

Add Takashi

Regards,
Libin


> -----Original Message-----
> From: Pandiyan, Dhinakaran
> Sent: Wednesday, August 3, 2016 9:47 AM
> To: intel-gfx@lists.freedesktop.org
> Cc: cpaul@redhat.com; ville.syrjala@linux.intel.com; Yang, Libin
> <libin.yang@intel.com>; Pandiyan, Dhinakaran
> <dhinakaran.pandiyan@intel.com>
> Subject: [PATCH 3/3] drm/i915: Fix enc_to_dig_port for MST encoders
> 
> When a MST encoder is passed to enc_to_dig_port(), the container_of() macro
> does not return the digital port. Handle this by returning the member
> "primary" in "struct intel_dp_mst_encoder"
> 
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_drv.h | 16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 45020d2..66af444 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1023,18 +1023,22 @@ intel_attached_encoder(struct drm_connector
> *connector)
>  	return to_intel_connector(connector)->encoder;
>  }
> 
> -static inline struct intel_digital_port * -enc_to_dig_port(struct drm_encoder
> *encoder) -{
> -	return container_of(encoder, struct intel_digital_port, base.base);
> -}
> -
>  static inline struct intel_dp_mst_encoder *  enc_to_mst(struct drm_encoder
> *encoder)  {
>  	return container_of(encoder, struct intel_dp_mst_encoder,
> base.base);  }
> 
> +static inline struct intel_digital_port * enc_to_dig_port(struct
> +drm_encoder *encoder) {
> +	if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
> +		return enc_to_mst(encoder)->primary;
> +	else
> +		return container_of(encoder, struct intel_digital_port,
> +				    base.base);
> +}
> +
>  static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)  {
>  	return &enc_to_dig_port(encoder)->dp;
> --
> 2.5.0

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✗ Ro.CI.BAT: failure for series starting with [1/3] drm/i915: start adding dp mst audio

[Patchwork]

== Series Details ==

Series: series starting with [1/3] drm/i915: start adding dp mst audio
URL   : https://patchwork.freedesktop.org/series/10570/
State : failure

== Summary ==

Series 10570v1 Series without cover letter
http://patchwork.freedesktop.org/api/1.0/series/10570/revisions/1/mbox

Test gem_exec_gttfill:
        Subgroup basic:
                pass       -> SKIP       (fi-snb-i7-2600)
Test kms_cursor_legacy:
        Subgroup basic-flip-vs-cursor-legacy:
                pass       -> FAIL       (ro-hsw-i7-4770r)
                pass       -> FAIL       (ro-bdw-i5-5250u)
        Subgroup basic-flip-vs-cursor-varying-size:
                fail       -> PASS       (ro-bdw-i7-5557U)
                fail       -> PASS       (ro-snb-i7-2620M)

fi-hsw-i7-4770k  total:240  pass:218  dwarn:0   dfail:0   fail:0   skip:22 
fi-kbl-qkkr      total:240  pass:182  dwarn:30  dfail:0   fail:2   skip:26 
fi-skl-i5-6260u  total:240  pass:224  dwarn:0   dfail:0   fail:2   skip:14 
fi-snb-i7-2600   total:240  pass:197  dwarn:0   dfail:0   fail:0   skip:43 
ro-bdw-i5-5250u  total:240  pass:218  dwarn:4   dfail:0   fail:2   skip:16 
ro-bdw-i7-5557U  total:240  pass:224  dwarn:0   dfail:0   fail:0   skip:16 
ro-bdw-i7-5600u  total:240  pass:207  dwarn:0   dfail:0   fail:1   skip:32 
ro-bsw-n3050     total:240  pass:195  dwarn:0   dfail:0   fail:3   skip:42 
ro-byt-n2820     total:240  pass:197  dwarn:0   dfail:0   fail:3   skip:40 
ro-hsw-i3-4010u  total:240  pass:214  dwarn:0   dfail:0   fail:0   skip:26 
ro-hsw-i7-4770r  total:240  pass:213  dwarn:0   dfail:0   fail:1   skip:26 
ro-ilk-i7-620lm  total:240  pass:173  dwarn:1   dfail:0   fail:1   skip:65 
ro-ilk1-i5-650   total:235  pass:173  dwarn:0   dfail:0   fail:2   skip:60 
ro-ivb-i7-3770   total:240  pass:205  dwarn:0   dfail:0   fail:0   skip:35 
ro-ivb2-i7-3770  total:240  pass:209  dwarn:0   dfail:0   fail:0   skip:31 
ro-skl3-i5-6260u total:240  pass:222  dwarn:0   dfail:0   fail:4   skip:14 
ro-snb-i7-2620M  total:240  pass:198  dwarn:0   dfail:0   fail:1   skip:41 

Results at /archive/results/CI_IGT_test/RO_Patchwork_1671/

aa8628c drm-intel-nightly: 2016y-08m-02d-14h-10m-12s UTC integration manifest
b6a008a drm/i915: Fix enc_to_dig_port for MST encoders
730689f drm/i915: Move audio_connector to intel_encoder
a38fefd drm/i915: start adding dp mst audio

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Re: [PATCH 1/3] drm/i915: start adding dp mst audio

[Lyude]

This should be added after patch #3, since that's the one that fixes
enc_to_mst(). Otherwise:

Reviewed-by: Lyude <cpaul@redhat.com>

On Tue, 2016-08-02 at 18:46 -0700, Dhinakaran Pandiyan wrote:
> From: Libin Yang <libin.yang@linux.intel.com>
> 
> (This patch is developed by Dave Airlie <airlied@redhat.com>
> 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.
> 
> Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++-
>  drivers/gpu/drm/i915/intel_ddi.c    | 20 +++++++++++++++-----
>  drivers/gpu/drm/i915/intel_dp_mst.c | 21 +++++++++++++++++++++
>  drivers/gpu/drm/i915/intel_drv.h    |  2 ++
>  4 files changed, 56 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 531ca02..56e38b1 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2961,6 +2961,20 @@ static void intel_dp_info(struct seq_file *m,
>  		intel_panel_info(m, &intel_connector->panel);
>  }
>  
> +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)
>  {
> @@ -3003,7 +3017,10 @@ 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 dd1d6fe..cbb4e7a 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -2154,6 +2154,19 @@ void intel_ddi_fdi_disable(struct drm_crtc
> *crtc)
>  	I915_WRITE(FDI_RX_CTL(PIPE_A), val);
>  }
>  
> +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)
>  {
> @@ -2219,11 +2232,8 @@ 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 68a005d..84dbb50 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -76,6 +76,8 @@ static bool intel_dp_mst_compute_config(struct
> intel_encoder *encoder,
>  		return false;
>  	}
>  
> +	if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found-
> >port))
> +		pipe_config->has_audio = true;
>  	mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock,
> bpp);
>  
>  	pipe_config->pbn = mst_pbn;
> @@ -97,6 +99,10 @@ static void intel_mst_disable_dp(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 drm_device *dev = encoder->base.dev;
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +	struct drm_crtc *crtc = encoder->base.crtc;
> +	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
>  	int ret;
>  
>  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
> @@ -107,6 +113,10 @@ static void intel_mst_disable_dp(struct
> intel_encoder *encoder)
>  	if (ret) {
>  		DRM_ERROR("failed to update payload %d\n", ret);
>  	}
> +	if (intel_crtc->config->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)
> @@ -207,7 +217,9 @@ static void intel_mst_enable_dp(struct
> intel_encoder *encoder)
>  	struct intel_dp *intel_dp = &intel_dig_port->dp;
>  	struct drm_device *dev = intel_dig_port->base.base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
> +	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
>  	enum port port = intel_dig_port->port;
> +	enum pipe pipe = crtc->pipe;
>  	int ret;
>  
>  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
> @@ -222,6 +234,12 @@ 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 (crtc->config->has_audio) {
> +		DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
> +				 pipe_name(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,
> @@ -245,6 +263,9 @@ 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 e74d851..f73de63c 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1123,6 +1123,8 @@ 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);
>  void intel_ddi_fdi_disable(struct drm_crtc *crtc);
> +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 *
-- 
Cheers,
	Lyude
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Re: [PATCH 2/3] drm/i915: Move audio_connector to intel_encoder

[Lyude]

Reviewed-by: Lyude <cpaul@redhat.com>

On Tue, 2016-08-02 at 18:46 -0700, Dhinakaran Pandiyan wrote:
> With DP MST, a digital_port can carry more than one audio stream.
> Hence,
> more than one audio_connector needs to be attached to
> intel_digital_port in
> such cases. However, each stream is associated with an unique
> encoder. So,
> instead of creating an array of audio_connectors per port, move
> audio_connector from struct intel_digital_port to struct
> intel_encoder.
> This also simplifies access to the right audio_connector from codec
> functions in intel_audio.c that receive intel_encoder.
> 
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_audio.c | 10 ++++------
>  drivers/gpu/drm/i915/intel_drv.h   |  4 ++--
>  2 files changed, 6 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_audio.c
> b/drivers/gpu/drm/i915/intel_audio.c
> index 6700a7b..8c493de 100644
> --- a/drivers/gpu/drm/i915/intel_audio.c
> +++ b/drivers/gpu/drm/i915/intel_audio.c
> @@ -523,7 +523,7 @@ void intel_audio_codec_enable(struct
> intel_encoder *intel_encoder)
>  						     adjusted_mode);
>  
>  	mutex_lock(&dev_priv->av_mutex);
> -	intel_dig_port->audio_connector = connector;
> +	intel_encoder->audio_connector = connector;
>  	/* referred in audio callbacks */
>  	dev_priv->dig_port_map[port] = intel_encoder;
>  	mutex_unlock(&dev_priv->av_mutex);
> @@ -552,7 +552,7 @@ void intel_audio_codec_disable(struct
> intel_encoder *intel_encoder)
>  		dev_priv-
> >display.audio_codec_disable(intel_encoder);
>  
>  	mutex_lock(&dev_priv->av_mutex);
> -	intel_dig_port->audio_connector = NULL;
> +	intel_encoder->audio_connector = NULL;
>  	dev_priv->dig_port_map[port] = NULL;
>  	mutex_unlock(&dev_priv->av_mutex);
>  
> @@ -707,7 +707,6 @@ static int i915_audio_component_get_eld(struct
> device *dev, int port,
>  {
>  	struct drm_i915_private *dev_priv = dev_to_i915(dev);
>  	struct intel_encoder *intel_encoder;
> -	struct intel_digital_port *intel_dig_port;
>  	const u8 *eld;
>  	int ret = -EINVAL;
>  
> @@ -716,10 +715,9 @@ static int i915_audio_component_get_eld(struct
> device *dev, int port,
>  	/* intel_encoder might be NULL for DP MST */
>  	if (intel_encoder) {
>  		ret = 0;
> -		intel_dig_port = enc_to_dig_port(&intel_encoder-
> >base);
> -		*enabled = intel_dig_port->audio_connector != NULL;
> +		*enabled = intel_encoder->audio_connector != NULL;
>  		if (*enabled) {
> -			eld = intel_dig_port->audio_connector->eld;
> +			eld = intel_encoder->audio_connector->eld;
>  			ret = drm_eld_size(eld);
>  			memcpy(buf, eld, min(max_bytes, ret));
>  		}
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index f73de63c..45020d2 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -220,6 +220,8 @@ struct intel_encoder {
>  	void (*suspend)(struct intel_encoder *);
>  	int crtc_mask;
>  	enum hpd_pin hpd_pin;
> +	/* for communication with audio component; protected by
> av_mutex */
> +	const struct drm_connector *audio_connector;
>  };
>  
>  struct intel_panel {
> @@ -929,8 +931,6 @@ struct intel_digital_port {
>  	enum irqreturn (*hpd_pulse)(struct intel_digital_port *,
> bool);
>  	bool release_cl2_override;
>  	uint8_t max_lanes;
> -	/* for communication with audio component; protected by
> av_mutex */
> -	const struct drm_connector *audio_connector;
>  };
>  
>  struct intel_dp_mst_encoder {
-- 
Cheers,
	Lyude
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Re: [PATCH 3/3] drm/i915: Fix enc_to_dig_port for MST encoders

[Lyude]

There was some discussion that happened on the original version of this
patch:

https://patchwork.kernel.org/patch/8960831/

The general consensus was while this fixed the issue, it probably isn't
the way we want to fix it. It would be a better idea just to have
enc_to_mst_primary() or something along those lines, or just use
enc_to_mst()->primary explicitly.

On Tue, 2016-08-02 at 18:46 -0700, Dhinakaran Pandiyan wrote:
> When a MST encoder is passed to enc_to_dig_port(), the container_of()
> macro
> does not return the digital port. Handle this by returning the member
> "primary" in "struct intel_dp_mst_encoder"
> 
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_drv.h | 16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 45020d2..66af444 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1023,18 +1023,22 @@ intel_attached_encoder(struct drm_connector
> *connector)
>  	return to_intel_connector(connector)->encoder;
>  }
>  
> -static inline struct intel_digital_port *
> -enc_to_dig_port(struct drm_encoder *encoder)
> -{
> -	return container_of(encoder, struct intel_digital_port,
> base.base);
> -}
> -
>  static inline struct intel_dp_mst_encoder *
>  enc_to_mst(struct drm_encoder *encoder)
>  {
>  	return container_of(encoder, struct intel_dp_mst_encoder,
> base.base);
>  }
>  
> +static inline struct intel_digital_port *
> +enc_to_dig_port(struct drm_encoder *encoder)
> +{
> +	if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
> +		return enc_to_mst(encoder)->primary;
> +	else
> +		return container_of(encoder, struct
> intel_digital_port,
> +				    base.base);
> +}
> +
>  static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder
> *encoder)
>  {
>  	return &enc_to_dig_port(encoder)->dp;
-- 
Cheers,
	Lyude
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Re: [PATCH 1/3] drm/i915: start adding dp mst audio

[Pandiyan, Dhinakaran]

Thanks Lyude. I realized that after sending the patches, will fix that.

On Thu, 2016-08-04 at 19:42 -0400, Lyude wrote:
> This should be added after patch #3, since that's the one that fixes
> enc_to_mst(). Otherwise:
> 
> Reviewed-by: Lyude <cpaul@redhat.com>
> 
> On Tue, 2016-08-02 at 18:46 -0700, Dhinakaran Pandiyan wrote:
> > From: Libin Yang <libin.yang@linux.intel.com>
> > 
> > (This patch is developed by Dave Airlie <airlied@redhat.com>
> > 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.
> > 
> > Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
> > ---
> >  drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++-
> >  drivers/gpu/drm/i915/intel_ddi.c    | 20 +++++++++++++++-----
> >  drivers/gpu/drm/i915/intel_dp_mst.c | 21 +++++++++++++++++++++
> >  drivers/gpu/drm/i915/intel_drv.h    |  2 ++
> >  4 files changed, 56 insertions(+), 6 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> > b/drivers/gpu/drm/i915/i915_debugfs.c
> > index 531ca02..56e38b1 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -2961,6 +2961,20 @@ static void intel_dp_info(struct seq_file *m,
> >  		intel_panel_info(m, &intel_connector->panel);
> >  }
> >  
> > +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)
> >  {
> > @@ -3003,7 +3017,10 @@ 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 dd1d6fe..cbb4e7a 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -2154,6 +2154,19 @@ void intel_ddi_fdi_disable(struct drm_crtc
> > *crtc)
> >  	I915_WRITE(FDI_RX_CTL(PIPE_A), val);
> >  }
> >  
> > +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)
> >  {
> > @@ -2219,11 +2232,8 @@ 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 68a005d..84dbb50 100644
> > --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> > +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> > @@ -76,6 +76,8 @@ static bool intel_dp_mst_compute_config(struct
> > intel_encoder *encoder,
> >  		return false;
> >  	}
> >  
> > +	if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found-
> > >port))
> > +		pipe_config->has_audio = true;
> >  	mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock,
> > bpp);
> >  
> >  	pipe_config->pbn = mst_pbn;
> > @@ -97,6 +99,10 @@ static void intel_mst_disable_dp(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 drm_device *dev = encoder->base.dev;
> > +	struct drm_i915_private *dev_priv = dev->dev_private;
> > +	struct drm_crtc *crtc = encoder->base.crtc;
> > +	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> >  	int ret;
> >  
> >  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
> > @@ -107,6 +113,10 @@ static void intel_mst_disable_dp(struct
> > intel_encoder *encoder)
> >  	if (ret) {
> >  		DRM_ERROR("failed to update payload %d\n", ret);
> >  	}
> > +	if (intel_crtc->config->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)
> > @@ -207,7 +217,9 @@ static void intel_mst_enable_dp(struct
> > intel_encoder *encoder)
> >  	struct intel_dp *intel_dp = &intel_dig_port->dp;
> >  	struct drm_device *dev = intel_dig_port->base.base.dev;
> >  	struct drm_i915_private *dev_priv = to_i915(dev);
> > +	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
> >  	enum port port = intel_dig_port->port;
> > +	enum pipe pipe = crtc->pipe;
> >  	int ret;
> >  
> >  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
> > @@ -222,6 +234,12 @@ 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 (crtc->config->has_audio) {
> > +		DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
> > +				 pipe_name(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,
> > @@ -245,6 +263,9 @@ 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 e74d851..f73de63c 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -1123,6 +1123,8 @@ 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);
> >  void intel_ddi_fdi_disable(struct drm_crtc *crtc);
> > +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 *

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Re: [PATCH 3/3] drm/i915: Fix enc_to_dig_port for MST encoders

[Pandiyan, Dhinakaran]

On Thu, 2016-08-04 at 19:51 -0400, Lyude wrote:
> There was some discussion that happened on the original version of this
> patch:
> 
> https://patchwork.kernel.org/patch/8960831/
> 
> The general consensus was while this fixed the issue, it probably isn't
> the way we want to fix it. It would be a better idea just to have
> enc_to_mst_primary() or something along those lines, or just use
> enc_to_mst()->primary explicitly.
> 

Thanks for the pointer and the review.

It seems like the concerns were about DP MST audio not working anyway. I
wonder with DP MST audio support coming up
(https://patchwork.kernel.org/patch/9260671/) , if the patch is more
acceptable.

> On Tue, 2016-08-02 at 18:46 -0700, Dhinakaran Pandiyan wrote:
> > When a MST encoder is passed to enc_to_dig_port(), the container_of()
> > macro
> > does not return the digital port. Handle this by returning the member
> > "primary" in "struct intel_dp_mst_encoder"
> > 
> > Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_drv.h | 16 ++++++++++------
> >  1 file changed, 10 insertions(+), 6 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h
> > b/drivers/gpu/drm/i915/intel_drv.h
> > index 45020d2..66af444 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -1023,18 +1023,22 @@ intel_attached_encoder(struct drm_connector
> > *connector)
> >  	return to_intel_connector(connector)->encoder;
> >  }
> >  
> > -static inline struct intel_digital_port *
> > -enc_to_dig_port(struct drm_encoder *encoder)
> > -{
> > -	return container_of(encoder, struct intel_digital_port,
> > base.base);
> > -}
> > -
> >  static inline struct intel_dp_mst_encoder *
> >  enc_to_mst(struct drm_encoder *encoder)
> >  {
> >  	return container_of(encoder, struct intel_dp_mst_encoder,
> > base.base);
> >  }
> >  
> > +static inline struct intel_digital_port *
> > +enc_to_dig_port(struct drm_encoder *encoder)
> > +{
> > +	if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
> > +		return enc_to_mst(encoder)->primary;
> > +	else
> > +		return container_of(encoder, struct
> > intel_digital_port,
> > +				    base.base);
> > +}
> > +
> >  static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder
> > *encoder)
> >  {
> >  	return &enc_to_dig_port(encoder)->dp;

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