[alsa-devel] [PATCH v3 0/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[alsa-devel] [PATCH v3 0/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Nikhil Mahale]

Today, DisplayPort multi-stream transport (DP-MST) audio is not
supported on codec drivers which don't use the audio component
(acomp) binding.

The commit ade49db337a9 (ALSA: hda/hdmi - Allow audio component for
AMD/ATI and Nvidia HDMI) added the DRM audio component binding for
the NVIDIA codec drivers, but the traditional HD-audio unsolicited
event code path is still in use by the proprietary NVIDIA graphics
driver.

This patch set adds DP-MST audio support for non-acomp codec drivers
which use the traditional HD-audio unsolicited event code path. This
patch set adds DP-MST support for NVIDIA codecs.

The patch set has been tested for HDMI/DP-SST/DP-MST(4 dp-mst audio
streams) configurations on NVIDIA Kepler and Maxwell GPUs, using
both the nouveau driver and the proprietary NVIDIA graphics driver.

Nikhil Mahale (4):
  ALSA: hda - Rename snd_hda_pin_sense to snd_hda_jack_pin_sense
  ALSA: hda - Add DP-MST jack support
  ALSA: hda - Add DP-MST support for non-acomp codecs
  ALSA: hda - Add DP-MST support for NVIDIA codecs

 sound/pci/hda/hda_jack.c   | 151 ++++++++++++++++++--------
 sound/pci/hda/hda_jack.h   | 107 ++++++++++++++++--
 sound/pci/hda/patch_hdmi.c | 263 +++++++++++++++++++++++++++++++--------------
 3 files changed, 385 insertions(+), 136 deletions(-)

-- 
2.16.4

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[alsa-devel] [PATCH v3 1/4] ALSA: hda - Rename snd_hda_pin_sense to snd_hda_jack_pin_sense

[Nikhil Mahale]

s/snd_hda_pin_sense/snd_hda_jack_pin_sense/g

This aligns the snd_hda_pin_sense function name with the names of
other functions in hda_jack.h.

Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
---
 sound/pci/hda/hda_jack.c   | 8 ++++----
 sound/pci/hda/hda_jack.h   | 2 +-
 sound/pci/hda/patch_hdmi.c | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index 1fb7b06457ae..1ea42447278f 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -191,14 +191,14 @@ void snd_hda_jack_set_dirty_all(struct hda_codec *codec)
 EXPORT_SYMBOL_GPL(snd_hda_jack_set_dirty_all);
 
 /**
- * snd_hda_pin_sense - execute pin sense measurement
+ * snd_hda_jack_pin_sense - execute pin sense measurement
  * @codec: the CODEC to sense
  * @nid: the pin NID to sense
  *
  * Execute necessary pin sense measurement and return its Presence Detect,
  * Impedance, ELD Valid etc. status bits.
  */
-u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
+u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid)
 {
 	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
 	if (jack) {
@@ -207,7 +207,7 @@ u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
 	}
 	return read_pin_sense(codec, nid);
 }
-EXPORT_SYMBOL_GPL(snd_hda_pin_sense);
+EXPORT_SYMBOL_GPL(snd_hda_jack_pin_sense);
 
 /**
  * snd_hda_jack_detect_state - query pin Presence Detect status
@@ -222,7 +222,7 @@ int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid)
 	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
 	if (jack && jack->phantom_jack)
 		return HDA_JACK_PHANTOM;
-	else if (snd_hda_pin_sense(codec, nid) & AC_PINSENSE_PRESENCE)
+	else if (snd_hda_jack_pin_sense(codec, nid) & AC_PINSENSE_PRESENCE)
 		return HDA_JACK_PRESENT;
 	else
 		return HDA_JACK_NOT_PRESENT;
diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h
index 22fe7ee43e82..cd9b47f51fab 100644
--- a/sound/pci/hda/hda_jack.h
+++ b/sound/pci/hda/hda_jack.h
@@ -65,7 +65,7 @@ snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
 				 hda_nid_t gating_nid);
 
-u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
+u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid);
 
 /* the jack state returned from snd_hda_jack_detect_state() */
 enum {
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 3c720703ebb8..c1eee2274fb5 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1521,7 +1521,7 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 	bool ret;
 	bool do_repoll = false;
 
-	present = snd_hda_pin_sense(codec, pin_nid);
+	present = snd_hda_jack_pin_sense(codec, pin_nid);
 
 	mutex_lock(&per_pin->lock);
 	eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
-- 
2.16.4

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[alsa-devel] [PATCH v3 2/4] ALSA: hda - Add DP-MST jack support

[Nikhil Mahale]

This patch adds DP-MST jack support which will be used on NVIDIA
platforms. Today, DP-MST audio is supported only if the codec has
acomp support. This patch makes it possible to add DP-MST support
for non-acomp codecs.

For the codecs supporting DP-MST audio, each pin can contain several
device entries. Each device entry is a virtual pin, described by
pin_nid and dev_id in struct hdmi_spec_per_pin. For monitor hotplug
event handling, non-acomp codecs enable and register jack-detection
for every hdmi_spec_per_pin.

This patch updates every relevant function in hda_jack.h and its
implementation in hda_jack.c, to consider dev_id along with pin_nid.

Changes to the HD Audio specification to support DP-MST audio are
described in the Intel Document Change Notification (DCN) number
HDA040-A.

From HDA040-A, "For the case of multi stream capable Digital Display
Pin Widget, [the Get Pin Sense verb] can be used to read a specific
Device Entry state as reported in Get Device List Entry verb." This
patch updates the read_pin_sense() function to take the dev_id as an
argument and pass it as a parameter to the Get Pin Sense verb.

Bits 15 through 20 from the Unsolicited Response for intrinsic
events contain the index of the Device Entry that generated the
event. This patch updates the Unsolicited Response event handlers to
extract the device entry index from the response and pass it to
snd_hda_jack_tbl_get_from_tag().

This patch updates snd_hda_jack_tbl_new() to take a dev_id argument
and store it in the jack structure, and to make sure not to generate
a different tag when called more than once for the same nid.

Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
---
 sound/pci/hda/hda_jack.c   | 147 ++++++++++++++++++++++++++++++++-------------
 sound/pci/hda/hda_jack.h   | 107 +++++++++++++++++++++++++++++----
 sound/pci/hda/patch_hdmi.c |  70 ++++++++++++---------
 3 files changed, 244 insertions(+), 80 deletions(-)

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index 1ea42447278f..bf0255cb0515 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -43,7 +43,7 @@ bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
 EXPORT_SYMBOL_GPL(is_jack_detectable);
 
 /* execute pin sense measurement */
-static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid)
+static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid, int dev_id)
 {
 	u32 pincap;
 	u32 val;
@@ -55,19 +55,20 @@ static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid)
 					AC_VERB_SET_PIN_SENSE, 0);
 	}
 	val = snd_hda_codec_read(codec, nid, 0,
-				  AC_VERB_GET_PIN_SENSE, 0);
+				  AC_VERB_GET_PIN_SENSE, dev_id);
 	if (codec->inv_jack_detect)
 		val ^= AC_PINSENSE_PRESENCE;
 	return val;
 }
 
 /**
- * snd_hda_jack_tbl_get - query the jack-table entry for the given NID
+ * snd_hda_jack_tbl_get_mst - query the jack-table entry for the given NID
  * @codec: the HDA codec
  * @nid: pin NID to refer to
+ * @dev_id: pin device entry id
  */
 struct hda_jack_tbl *
-snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
+snd_hda_jack_tbl_get_mst(struct hda_codec *codec, hda_nid_t nid, int dev_id)
 {
 	struct hda_jack_tbl *jack = codec->jacktbl.list;
 	int i;
@@ -75,19 +76,21 @@ snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
 	if (!nid || !jack)
 		return NULL;
 	for (i = 0; i < codec->jacktbl.used; i++, jack++)
-		if (jack->nid == nid)
+		if (jack->nid == nid && jack->dev_id == dev_id)
 			return jack;
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(snd_hda_jack_tbl_get);
+EXPORT_SYMBOL_GPL(snd_hda_jack_tbl_get_mst);
 
 /**
  * snd_hda_jack_tbl_get_from_tag - query the jack-table entry for the given tag
  * @codec: the HDA codec
  * @tag: tag value to refer to
+ * @dev_id: pin device entry id
  */
 struct hda_jack_tbl *
-snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag)
+snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec,
+			      unsigned char tag, int dev_id)
 {
 	struct hda_jack_tbl *jack = codec->jacktbl.list;
 	int i;
@@ -95,29 +98,62 @@ snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag)
 	if (!tag || !jack)
 		return NULL;
 	for (i = 0; i < codec->jacktbl.used; i++, jack++)
-		if (jack->tag == tag)
+		if (jack->tag == tag && jack->dev_id == dev_id)
 			return jack;
 	return NULL;
 }
 EXPORT_SYMBOL_GPL(snd_hda_jack_tbl_get_from_tag);
 
+static struct hda_jack_tbl *
+any_jack_tbl_get_from_nid(struct hda_codec *codec, hda_nid_t nid)
+{
+	struct hda_jack_tbl *jack = codec->jacktbl.list;
+	int i;
+
+	if (!nid || !jack)
+		return NULL;
+	for (i = 0; i < codec->jacktbl.used; i++, jack++)
+		if (jack->nid == nid)
+			return jack;
+	return NULL;
+}
+
 /**
  * snd_hda_jack_tbl_new - create a jack-table entry for the given NID
  * @codec: the HDA codec
  * @nid: pin NID to assign
  */
 static struct hda_jack_tbl *
-snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid)
+snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid, int dev_id)
 {
-	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
+	struct hda_jack_tbl *jack =
+		snd_hda_jack_tbl_get_mst(codec, nid, dev_id);
+	struct hda_jack_tbl *existing_nid_jack =
+		any_jack_tbl_get_from_nid(codec, nid);
+
+	WARN_ON(dev_id != 0 && !codec->dp_mst);
+
 	if (jack)
 		return jack;
 	jack = snd_array_new(&codec->jacktbl);
 	if (!jack)
 		return NULL;
 	jack->nid = nid;
+	jack->dev_id = dev_id;
 	jack->jack_dirty = 1;
-	jack->tag = codec->jacktbl.used;
+	if (existing_nid_jack) {
+		jack->tag = existing_nid_jack->tag;
+
+		/*
+		 * Copy jack_detect from existing_nid_jack to avoid
+		 * snd_hda_jack_detect_enable_callback_mst() making multiple
+		 * SET_UNSOLICITED_ENABLE calls on the same pin.
+		 */
+		jack->jack_detect = existing_nid_jack->jack_detect;
+	} else {
+		jack->tag = codec->jacktbl.used;
+	}
+
 	return jack;
 }
 
@@ -153,10 +189,12 @@ static void jack_detect_update(struct hda_codec *codec,
 	if (jack->phantom_jack)
 		jack->pin_sense = AC_PINSENSE_PRESENCE;
 	else
-		jack->pin_sense = read_pin_sense(codec, jack->nid);
+		jack->pin_sense = read_pin_sense(codec, jack->nid,
+						 jack->dev_id);
 
 	/* A gating jack indicates the jack is invalid if gating is unplugged */
-	if (jack->gating_jack && !snd_hda_jack_detect(codec, jack->gating_jack))
+	if (jack->gating_jack &&
+	    !snd_hda_jack_detect_mst(codec, jack->gating_jack, jack->dev_id))
 		jack->pin_sense &= ~AC_PINSENSE_PRESENCE;
 
 	jack->jack_dirty = 0;
@@ -164,7 +202,8 @@ static void jack_detect_update(struct hda_codec *codec,
 	/* If a jack is gated by this one update it. */
 	if (jack->gated_jack) {
 		struct hda_jack_tbl *gated =
-			snd_hda_jack_tbl_get(codec, jack->gated_jack);
+			snd_hda_jack_tbl_get_mst(codec, jack->gated_jack,
+						 jack->dev_id);
 		if (gated) {
 			gated->jack_dirty = 1;
 			jack_detect_update(codec, gated);
@@ -198,56 +237,62 @@ EXPORT_SYMBOL_GPL(snd_hda_jack_set_dirty_all);
  * Execute necessary pin sense measurement and return its Presence Detect,
  * Impedance, ELD Valid etc. status bits.
  */
-u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid)
+u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid, int dev_id)
 {
-	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
+	struct hda_jack_tbl *jack =
+		snd_hda_jack_tbl_get_mst(codec, nid, dev_id);
 	if (jack) {
 		jack_detect_update(codec, jack);
 		return jack->pin_sense;
 	}
-	return read_pin_sense(codec, nid);
+	return read_pin_sense(codec, nid, dev_id);
 }
 EXPORT_SYMBOL_GPL(snd_hda_jack_pin_sense);
 
 /**
- * snd_hda_jack_detect_state - query pin Presence Detect status
+ * snd_hda_jack_detect_state_mst - query pin Presence Detect status
  * @codec: the CODEC to sense
  * @nid: the pin NID to sense
+ * @dev_id: pin device entry id
  *
  * Query and return the pin's Presence Detect status, as either
  * HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT or HDA_JACK_PHANTOM.
  */
-int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid)
+int snd_hda_jack_detect_state_mst(struct hda_codec *codec,
+				  hda_nid_t nid, int dev_id)
 {
-	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
+	struct hda_jack_tbl *jack =
+		snd_hda_jack_tbl_get_mst(codec, nid, dev_id);
 	if (jack && jack->phantom_jack)
 		return HDA_JACK_PHANTOM;
-	else if (snd_hda_jack_pin_sense(codec, nid) & AC_PINSENSE_PRESENCE)
+	else if (snd_hda_jack_pin_sense(codec, nid, dev_id) &
+		 AC_PINSENSE_PRESENCE)
 		return HDA_JACK_PRESENT;
 	else
 		return HDA_JACK_NOT_PRESENT;
 }
-EXPORT_SYMBOL_GPL(snd_hda_jack_detect_state);
+EXPORT_SYMBOL_GPL(snd_hda_jack_detect_state_mst);
 
 /**
- * snd_hda_jack_detect_enable - enable the jack-detection
+ * snd_hda_jack_detect_enable_mst - enable the jack-detection
  * @codec: the HDA codec
  * @nid: pin NID to enable
  * @func: callback function to register
+ * @dev_id: pin device entry id
  *
  * In the case of error, the return value will be a pointer embedded with
  * errno.  Check and handle the return value appropriately with standard
  * macros such as @IS_ERR() and @PTR_ERR().
  */
 struct hda_jack_callback *
-snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
-				    hda_jack_callback_fn func)
+snd_hda_jack_detect_enable_callback_mst(struct hda_codec *codec, hda_nid_t nid,
+					int dev_id, hda_jack_callback_fn func)
 {
 	struct hda_jack_tbl *jack;
 	struct hda_jack_callback *callback = NULL;
 	int err;
 
-	jack = snd_hda_jack_tbl_new(codec, nid);
+	jack = snd_hda_jack_tbl_new(codec, nid, dev_id);
 	if (!jack)
 		return ERR_PTR(-ENOMEM);
 	if (func) {
@@ -256,6 +301,7 @@ snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
 			return ERR_PTR(-ENOMEM);
 		callback->func = func;
 		callback->nid = jack->nid;
+		callback->dev_id = jack->dev_id;
 		callback->next = jack->callback;
 		jack->callback = callback;
 	}
@@ -272,19 +318,24 @@ snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
 		return ERR_PTR(err);
 	return callback;
 }
-EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable_callback);
+EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable_callback_mst);
 
 /**
  * snd_hda_jack_detect_enable - Enable the jack detection on the given pin
  * @codec: the HDA codec
  * @nid: pin NID to enable jack detection
+ * @dev_id: pin device entry id
  *
  * Enable the jack detection with the default callback.  Returns zero if
  * successful or a negative error code.
  */
-int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid)
+int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
+			       int dev_id)
 {
-	return PTR_ERR_OR_ZERO(snd_hda_jack_detect_enable_callback(codec, nid, NULL));
+	return PTR_ERR_OR_ZERO(snd_hda_jack_detect_enable_callback_mst(codec,
+								       nid,
+								       dev_id,
+								       NULL));
 }
 EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable);
 
@@ -299,8 +350,11 @@ EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable);
 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
 				 hda_nid_t gating_nid)
 {
-	struct hda_jack_tbl *gated = snd_hda_jack_tbl_new(codec, gated_nid);
-	struct hda_jack_tbl *gating = snd_hda_jack_tbl_new(codec, gating_nid);
+	struct hda_jack_tbl *gated = snd_hda_jack_tbl_new(codec, gated_nid, 0);
+	struct hda_jack_tbl *gating =
+		snd_hda_jack_tbl_new(codec, gating_nid, 0);
+
+	WARN_ON(codec->dp_mst);
 
 	if (!gated || !gating)
 		return -EINVAL;
@@ -376,9 +430,10 @@ static void hda_free_jack_priv(struct snd_jack *jack)
 }
 
 /**
- * snd_hda_jack_add_kctl - Add a kctl for the given pin
+ * snd_hda_jack_add_kctl_mst - Add a kctl for the given pin
  * @codec: the HDA codec
  * @nid: pin NID to assign
+ * @dev_id : pin device entry id
  * @name: string name for the jack
  * @phantom_jack: flag to deal as a phantom jack
  * @type: jack type bits to be reported, 0 for guessing from pincfg
@@ -387,15 +442,15 @@ static void hda_free_jack_priv(struct snd_jack *jack)
  * This assigns a jack-detection kctl to the given pin.  The kcontrol
  * will have the given name and index.
  */
-int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
-			  const char *name, bool phantom_jack,
-			  int type, const struct hda_jack_keymap *keymap)
+int snd_hda_jack_add_kctl_mst(struct hda_codec *codec, hda_nid_t nid,
+			      int dev_id, const char *name, bool phantom_jack,
+			      int type, const struct hda_jack_keymap *keymap)
 {
 	struct hda_jack_tbl *jack;
 	const struct hda_jack_keymap *map;
 	int err, state, buttons;
 
-	jack = snd_hda_jack_tbl_new(codec, nid);
+	jack = snd_hda_jack_tbl_new(codec, nid, dev_id);
 	if (!jack)
 		return 0;
 	if (jack->jack)
@@ -425,12 +480,12 @@ int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
 			snd_jack_set_key(jack->jack, map->type, map->key);
 	}
 
-	state = snd_hda_jack_detect(codec, nid);
+	state = snd_hda_jack_detect_mst(codec, nid, dev_id);
 	snd_jack_report(jack->jack, state ? jack->type : 0);
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(snd_hda_jack_add_kctl);
+EXPORT_SYMBOL_GPL(snd_hda_jack_add_kctl_mst);
 
 static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
 			 const struct auto_pin_cfg *cfg,
@@ -441,6 +496,8 @@ static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
 	int err;
 	bool phantom_jack;
 
+	WARN_ON(codec->dp_mst);
+
 	if (!nid)
 		return 0;
 	def_conf = snd_hda_codec_get_pincfg(codec, nid);
@@ -462,7 +519,7 @@ static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
 		return err;
 
 	if (!phantom_jack)
-		return snd_hda_jack_detect_enable(codec, nid);
+		return snd_hda_jack_detect_enable(codec, nid, 0);
 	return 0;
 }
 
@@ -540,7 +597,8 @@ static void call_jack_callback(struct hda_codec *codec, unsigned int res,
 	}
 	if (jack->gated_jack) {
 		struct hda_jack_tbl *gated =
-			snd_hda_jack_tbl_get(codec, jack->gated_jack);
+			snd_hda_jack_tbl_get_mst(codec, jack->gated_jack,
+						 jack->dev_id);
 		if (gated) {
 			for (cb = gated->callback; cb; cb = cb->next) {
 				cb->jack = gated;
@@ -561,7 +619,14 @@ void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 	struct hda_jack_tbl *event;
 	int tag = (res & AC_UNSOL_RES_TAG) >> AC_UNSOL_RES_TAG_SHIFT;
 
-	event = snd_hda_jack_tbl_get_from_tag(codec, tag);
+	if (codec->dp_mst) {
+		int dev_entry =
+			(res & AC_UNSOL_RES_DE) >> AC_UNSOL_RES_DE_SHIFT;
+
+		event = snd_hda_jack_tbl_get_from_tag(codec, tag, dev_entry);
+	} else {
+		event = snd_hda_jack_tbl_get_from_tag(codec, tag, 0);
+	}
 	if (!event)
 		return;
 	event->jack_dirty = 1;
diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h
index cd9b47f51fab..727b6d3ba454 100644
--- a/sound/pci/hda/hda_jack.h
+++ b/sound/pci/hda/hda_jack.h
@@ -19,6 +19,7 @@ typedef void (*hda_jack_callback_fn) (struct hda_codec *, struct hda_jack_callba
 
 struct hda_jack_callback {
 	hda_nid_t nid;
+	int dev_id;
 	hda_jack_callback_fn func;
 	unsigned int private_data;	/* arbitrary data */
 	unsigned int unsol_res;		/* unsolicited event bits */
@@ -28,6 +29,7 @@ struct hda_jack_callback {
 
 struct hda_jack_tbl {
 	hda_nid_t nid;
+	int dev_id;
 	unsigned char tag;		/* unsol event tag */
 	struct hda_jack_callback *callback;
 	/* jack-detection stuff */
@@ -49,46 +51,129 @@ struct hda_jack_keymap {
 };
 
 struct hda_jack_tbl *
-snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
+snd_hda_jack_tbl_get_mst(struct hda_codec *codec, hda_nid_t nid, int dev_id);
+
+/**
+ * snd_hda_jack_tbl_get - query the jack-table entry for the given NID
+ * @codec: the HDA codec
+ * @nid: pin NID to refer to
+ */
+static inline struct hda_jack_tbl *
+snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
+{
+	return snd_hda_jack_tbl_get_mst(codec, nid, 0);
+}
+
 struct hda_jack_tbl *
-snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
+snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec,
+			      unsigned char tag, int dev_id);
 
 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
 
 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
 
-int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid);
+int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
+			       int dev_id);
+
 struct hda_jack_callback *
+snd_hda_jack_detect_enable_callback_mst(struct hda_codec *codec, hda_nid_t nid,
+					int dev_id, hda_jack_callback_fn cb);
+
+/**
+ * snd_hda_jack_detect_enable - enable the jack-detection
+ * @codec: the HDA codec
+ * @nid: pin NID to enable
+ * @func: callback function to register
+ *
+ * In the case of error, the return value will be a pointer embedded with
+ * errno.  Check and handle the return value appropriately with standard
+ * macros such as @IS_ERR() and @PTR_ERR().
+ */
+static inline struct hda_jack_callback *
 snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
-				    hda_jack_callback_fn cb);
+				    hda_jack_callback_fn cb)
+{
+	return snd_hda_jack_detect_enable_callback_mst(codec, nid, 0, cb);
+}
 
 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
 				 hda_nid_t gating_nid);
 
-u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid);
+u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid, int dev_id);
 
 /* the jack state returned from snd_hda_jack_detect_state() */
 enum {
 	HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
 };
 
-int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
+int snd_hda_jack_detect_state_mst(struct hda_codec *codec, hda_nid_t nid,
+				  int dev_id);
+
+/**
+ * snd_hda_jack_detect_state - query pin Presence Detect status
+ * @codec: the CODEC to sense
+ * @nid: the pin NID to sense
+ *
+ * Query and return the pin's Presence Detect status, as either
+ * HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT or HDA_JACK_PHANTOM.
+ */
+static inline int
+snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid)
+{
+	return snd_hda_jack_detect_state_mst(codec, nid, 0);
+}
+
+/**
+ * snd_hda_jack_detect_mst - Detect the jack
+ * @codec: the HDA codec
+ * @nid: pin NID to check jack detection
+ * @dev_id: pin device entry id
+ */
+static inline bool
+snd_hda_jack_detect_mst(struct hda_codec *codec, hda_nid_t nid, int dev_id)
+{
+	return snd_hda_jack_detect_state_mst(codec, nid, dev_id) !=
+			HDA_JACK_NOT_PRESENT;
+}
 
 /**
  * snd_hda_jack_detect - Detect the jack
  * @codec: the HDA codec
  * @nid: pin NID to check jack detection
  */
-static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
+static inline bool
+snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
 {
-	return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
+	return snd_hda_jack_detect_mst(codec, nid, 0);
 }
 
 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
 
-int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
-			  const char *name, bool phantom_jack,
-			  int type, const struct hda_jack_keymap *keymap);
+int snd_hda_jack_add_kctl_mst(struct hda_codec *codec, hda_nid_t nid,
+			      int dev_id, const char *name, bool phantom_jack,
+			      int type, const struct hda_jack_keymap *keymap);
+
+/**
+ * snd_hda_jack_add_kctl - Add a kctl for the given pin
+ * @codec: the HDA codec
+ * @nid: pin NID to assign
+ * @name: string name for the jack
+ * @phantom_jack: flag to deal as a phantom jack
+ * @type: jack type bits to be reported, 0 for guessing from pincfg
+ * @keymap: optional jack / key mapping
+ *
+ * This assigns a jack-detection kctl to the given pin.  The kcontrol
+ * will have the given name and index.
+ */
+static inline int
+snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
+		      const char *name, bool phantom_jack,
+		      int type, const struct hda_jack_keymap *keymap)
+{
+	return snd_hda_jack_add_kctl_mst(codec, nid, 0,
+					 name, phantom_jack, type, keymap);
+}
+
 int snd_hda_jack_add_kctls(struct hda_codec *codec,
 			   const struct auto_pin_cfg *cfg);
 
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index c1eee2274fb5..84d410a93ed8 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -774,34 +774,32 @@ static void jack_callback(struct hda_codec *codec,
 	if (codec_has_acomp(codec))
 		return;
 
-	/* hda_jack don't support DP MST */
-	check_presence_and_report(codec, jack->nid, 0);
+	check_presence_and_report(codec, jack->nid, jack->dev_id);
 }
 
 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
 {
 	int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 	struct hda_jack_tbl *jack;
-	int dev_entry = (res & AC_UNSOL_RES_DE) >> AC_UNSOL_RES_DE_SHIFT;
 
-	/*
-	 * assume DP MST uses dyn_pcm_assign and acomp and
-	 * never comes here
-	 * if DP MST supports unsol event, below code need
-	 * consider dev_entry
-	 */
-	jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
+	if (codec->dp_mst) {
+		int dev_entry =
+			(res & AC_UNSOL_RES_DE) >> AC_UNSOL_RES_DE_SHIFT;
+
+		jack = snd_hda_jack_tbl_get_from_tag(codec, tag, dev_entry);
+	} else {
+		jack = snd_hda_jack_tbl_get_from_tag(codec, tag, 0);
+	}
 	if (!jack)
 		return;
 	jack->jack_dirty = 1;
 
 	codec_dbg(codec,
 		"HDMI hot plug event: Codec=%d Pin=%d Device=%d Inactive=%d Presence_Detect=%d ELD_Valid=%d\n",
-		codec->addr, jack->nid, dev_entry, !!(res & AC_UNSOL_RES_IA),
+		codec->addr, jack->nid, jack->dev_id, !!(res & AC_UNSOL_RES_IA),
 		!!(res & AC_UNSOL_RES_PD), !!(res & AC_UNSOL_RES_ELDV));
 
-	/* hda_jack don't support DP MST */
-	check_presence_and_report(codec, jack->nid, 0);
+	check_presence_and_report(codec, jack->nid, jack->dev_id);
 }
 
 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
@@ -831,11 +829,21 @@ static void hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
 {
 	int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
 	int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
+	struct hda_jack_tbl *jack;
 
 	if (codec_has_acomp(codec))
 		return;
 
-	if (!snd_hda_jack_tbl_get_from_tag(codec, tag)) {
+	if (codec->dp_mst) {
+		int dev_entry =
+			(res & AC_UNSOL_RES_DE) >> AC_UNSOL_RES_DE_SHIFT;
+
+		jack = snd_hda_jack_tbl_get_from_tag(codec, tag, dev_entry);
+	} else {
+		jack = snd_hda_jack_tbl_get_from_tag(codec, tag, 0);
+	}
+
+	if (!jack) {
 		codec_dbg(codec, "Unexpected HDMI event tag 0x%x\n", tag);
 		return;
 	}
@@ -1521,7 +1529,7 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 	bool ret;
 	bool do_repoll = false;
 
-	present = snd_hda_jack_pin_sense(codec, pin_nid);
+	present = snd_hda_jack_pin_sense(codec, pin_nid, per_pin->dev_id);
 
 	mutex_lock(&per_pin->lock);
 	eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
@@ -1554,7 +1562,7 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 
 	ret = !repoll || !eld->monitor_present || eld->eld_valid;
 
-	jack = snd_hda_jack_tbl_get(codec, pin_nid);
+	jack = snd_hda_jack_tbl_get_mst(codec, pin_nid, per_pin->dev_id);
 	if (jack) {
 		jack->block_report = !ret;
 		jack->pin_sense = (eld->monitor_present && eld->eld_valid) ?
@@ -1585,7 +1593,8 @@ static struct snd_jack *pin_idx_to_jack(struct hda_codec *codec,
 		 * DP MST will use dyn_pcm_assign,
 		 * so DP MST will never come here
 		 */
-		jack_tbl = snd_hda_jack_tbl_get(codec, per_pin->pin_nid);
+		jack_tbl = snd_hda_jack_tbl_get_mst(codec, per_pin->pin_nid,
+						    per_pin->dev_id);
 		if (jack_tbl)
 			jack = jack_tbl->jack;
 	}
@@ -1666,7 +1675,8 @@ static void hdmi_repoll_eld(struct work_struct *work)
 	struct hdmi_spec *spec = codec->spec;
 	struct hda_jack_tbl *jack;
 
-	jack = snd_hda_jack_tbl_get(codec, per_pin->pin_nid);
+	jack = snd_hda_jack_tbl_get_mst(codec, per_pin->pin_nid,
+					per_pin->dev_id);
 	if (jack)
 		jack->jack_dirty = 1;
 
@@ -2158,11 +2168,13 @@ static int generic_hdmi_build_jack(struct hda_codec *codec, int pcm_idx)
 	if (phantom_jack)
 		strncat(hdmi_str, " Phantom",
 			sizeof(hdmi_str) - strlen(hdmi_str) - 1);
-	ret = snd_hda_jack_add_kctl(codec, per_pin->pin_nid, hdmi_str,
-				    phantom_jack, 0, NULL);
+	ret = snd_hda_jack_add_kctl_mst(codec, per_pin->pin_nid,
+					per_pin->dev_id, hdmi_str, phantom_jack,
+					0, NULL);
 	if (ret < 0)
 		return ret;
-	jack = snd_hda_jack_tbl_get(codec, per_pin->pin_nid);
+	jack = snd_hda_jack_tbl_get_mst(codec, per_pin->pin_nid,
+					per_pin->dev_id);
 	if (jack == NULL)
 		return 0;
 	/* assign jack->jack to pcm_rec[].jack to
@@ -2271,10 +2283,11 @@ static int generic_hdmi_init(struct hda_codec *codec)
 		if (codec_has_acomp(codec))
 			continue;
 		if (spec->use_jack_detect)
-			snd_hda_jack_detect_enable(codec, pin_nid);
+			snd_hda_jack_detect_enable(codec, pin_nid, dev_id);
 		else
-			snd_hda_jack_detect_enable_callback(codec, pin_nid,
-							    jack_callback);
+			snd_hda_jack_detect_enable_callback_mst(codec, pin_nid,
+								dev_id,
+								jack_callback);
 	}
 	mutex_unlock(&spec->bind_lock);
 	return 0;
@@ -2424,11 +2437,11 @@ static int patch_generic_hdmi(struct hda_codec *codec)
 
 /* turn on / off the unsol event jack detection dynamically */
 static void reprogram_jack_detect(struct hda_codec *codec, hda_nid_t nid,
-				  bool use_acomp)
+				  int dev_id, bool use_acomp)
 {
 	struct hda_jack_tbl *tbl;
 
-	tbl = snd_hda_jack_tbl_get(codec, nid);
+	tbl = snd_hda_jack_tbl_get_mst(codec, nid, dev_id);
 	if (tbl) {
 		/* clear unsol even if component notifier is used, or re-enable
 		 * if notifier is cleared
@@ -2441,7 +2454,7 @@ static void reprogram_jack_detect(struct hda_codec *codec, hda_nid_t nid,
 		 * at need (i.e. only when notifier is cleared)
 		 */
 		if (!use_acomp)
-			snd_hda_jack_detect_enable(codec, nid);
+			snd_hda_jack_detect_enable(codec, nid, dev_id);
 	}
 }
 
@@ -2461,6 +2474,7 @@ static void generic_acomp_notifier_set(struct drm_audio_component *acomp,
 		for (i = 0; i < spec->num_pins; i++)
 			reprogram_jack_detect(spec->codec,
 					      get_pin(spec, i)->pin_nid,
+					      get_pin(spec, i)->dev_id,
 					      use_acomp);
 	}
 	mutex_unlock(&spec->bind_lock);
@@ -2968,7 +2982,7 @@ static int simple_playback_init(struct hda_codec *codec)
 	if (get_wcaps(codec, pin) & AC_WCAP_OUT_AMP)
 		snd_hda_codec_write(codec, pin, 0, AC_VERB_SET_AMP_GAIN_MUTE,
 				    AMP_OUT_UNMUTE);
-	snd_hda_jack_detect_enable(codec, pin);
+	snd_hda_jack_detect_enable(codec, pin, per_pin->dev_id);
 	return 0;
 }
 
-- 
2.16.4

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[alsa-devel] [PATCH v3 3/4] ALSA: hda - Add DP-MST support for non-acomp codecs

[Nikhil Mahale]

This patch make it possible for non-acomp codecs to set
dyn_pcm_assign/dp_mst and get DP-MST audio support.

Document change notification HDA040-A for the Intel High Definition
Audio 1.0a specification introduces a Device Select verb for Digital
Display Pin Widgets that are multi-stream capable. This verb selects
a Device Entry that is used by subsequent Pin Widget verbs.
Once the Device Entry is selected, all subsequent Pin Widget verbs
controlling the sink device will be directed to the selected Device
Entry until the Device Select verb is updated with a new value.

These Pin Widget verbs include:

  * Connection Select
  * Get Connection List Entry
  * Amplifier Gain/Mute
  * Power State
  * Pin Widget Control
  * ELD Data
  * DIP-Size
  * DIP-Index
  * DIP-Data
  * DIP-XmitCtrl
  * Content Protection Control
  * ASP Channel Mapping

This patch adds calls to snd_hda_set_dev_select() to direct each of
these Pin Widget control verbs to the correct Device Entry.

snd_hda_get_connections() does not return per-device connection
list, therefore make use snd_hda_get_raw_connections() instead of
snd_hda_get_connections().

Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
---
 sound/pci/hda/patch_hdmi.c | 100 ++++++++++++++++++++++++++++++---------------
 1 file changed, 67 insertions(+), 33 deletions(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 84d410a93ed8..1ba485da17c0 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -97,16 +97,19 @@ struct hdmi_spec_per_pin {
 /* operations used by generic code that can be overridden by patches */
 struct hdmi_ops {
 	int (*pin_get_eld)(struct hda_codec *codec, hda_nid_t pin_nid,
-			   unsigned char *buf, int *eld_size);
+			   int dev_id, unsigned char *buf, int *eld_size);
 
 	void (*pin_setup_infoframe)(struct hda_codec *codec, hda_nid_t pin_nid,
+				    int dev_id,
 				    int ca, int active_channels, int conn_type);
 
 	/* enable/disable HBR (HD passthrough) */
-	int (*pin_hbr_setup)(struct hda_codec *codec, hda_nid_t pin_nid, bool hbr);
+	int (*pin_hbr_setup)(struct hda_codec *codec, hda_nid_t pin_nid,
+			     int dev_id, bool hbr);
 
 	int (*setup_stream)(struct hda_codec *codec, hda_nid_t cvt_nid,
-			    hda_nid_t pin_nid, u32 stream_tag, int format);
+			    hda_nid_t pin_nid, int dev_id, u32 stream_tag,
+			    int format);
 
 	void (*pin_cvt_fixup)(struct hda_codec *codec,
 			      struct hdmi_spec_per_pin *per_pin,
@@ -652,8 +655,16 @@ static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
 	return true;
 }
 
+static int hdmi_pin_get_eld(struct hda_codec *codec, hda_nid_t nid,
+			    int dev_id, unsigned char *buf, int *eld_size)
+{
+	snd_hda_set_dev_select(codec, nid, dev_id);
+
+	return snd_hdmi_get_eld(codec, nid, buf, eld_size);
+}
+
 static void hdmi_pin_setup_infoframe(struct hda_codec *codec,
-				     hda_nid_t pin_nid,
+				     hda_nid_t pin_nid, int dev_id,
 				     int ca, int active_channels,
 				     int conn_type)
 {
@@ -683,6 +694,8 @@ static void hdmi_pin_setup_infoframe(struct hda_codec *codec,
 		return;
 	}
 
+	snd_hda_set_dev_select(codec, pin_nid, dev_id);
+
 	/*
 	 * sizeof(ai) is used instead of sizeof(*hdmi_ai) or
 	 * sizeof(*dp_ai) to avoid partial match/update problems when
@@ -708,6 +721,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
 	struct hdmi_spec *spec = codec->spec;
 	struct hdac_chmap *chmap = &spec->chmap;
 	hda_nid_t pin_nid = per_pin->pin_nid;
+	int dev_id = per_pin->dev_id;
 	int channels = per_pin->channels;
 	int active_channels;
 	struct hdmi_eld *eld;
@@ -716,6 +730,8 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
 	if (!channels)
 		return;
 
+	snd_hda_set_dev_select(codec, pin_nid, dev_id);
+
 	/* some HW (e.g. HSW+) needs reprogramming the amp at each time */
 	if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
 		snd_hda_codec_write(codec, pin_nid, 0,
@@ -741,8 +757,8 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
 				pin_nid, non_pcm, ca, channels,
 				per_pin->chmap, per_pin->chmap_set);
 
-	spec->ops.pin_setup_infoframe(codec, pin_nid, ca, active_channels,
-				      eld->info.conn_type);
+	spec->ops.pin_setup_infoframe(codec, pin_nid, dev_id,
+				      ca, active_channels, eld->info.conn_type);
 
 	per_pin->non_pcm = non_pcm;
 }
@@ -884,11 +900,12 @@ static void haswell_verify_D0(struct hda_codec *codec,
 	((format & AC_FMT_TYPE_NON_PCM) && (format & AC_FMT_CHAN_MASK) == 7)
 
 static int hdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
-			      bool hbr)
+			      int dev_id, bool hbr)
 {
 	int pinctl, new_pinctl;
 
 	if (snd_hda_query_pin_caps(codec, pin_nid) & AC_PINCAP_HBR) {
+		snd_hda_set_dev_select(codec, pin_nid, dev_id);
 		pinctl = snd_hda_codec_read(codec, pin_nid, 0,
 					    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
 
@@ -918,13 +935,15 @@ static int hdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
 }
 
 static int hdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
-			      hda_nid_t pin_nid, u32 stream_tag, int format)
+			      hda_nid_t pin_nid, int dev_id,
+			      u32 stream_tag, int format)
 {
 	struct hdmi_spec *spec = codec->spec;
 	unsigned int param;
 	int err;
 
-	err = spec->ops.pin_hbr_setup(codec, pin_nid, is_hbr_format(format));
+	err = spec->ops.pin_hbr_setup(codec, pin_nid, dev_id,
+				      is_hbr_format(format));
 
 	if (err) {
 		codec_dbg(codec, "hdmi_setup_stream: HBR is not supported\n");
@@ -1298,6 +1317,7 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
 	struct hdmi_spec *spec = codec->spec;
 	struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
 	hda_nid_t pin_nid = per_pin->pin_nid;
+	int dev_id = per_pin->dev_id;
 
 	if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) {
 		codec_warn(codec,
@@ -1306,10 +1326,12 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
 		return -EINVAL;
 	}
 
+	snd_hda_set_dev_select(codec, pin_nid, dev_id);
+
 	/* all the device entries on the same pin have the same conn list */
-	per_pin->num_mux_nids = snd_hda_get_connections(codec, pin_nid,
-							per_pin->mux_nids,
-							HDA_MAX_CONNECTIONS);
+	per_pin->num_mux_nids =
+		snd_hda_get_raw_connections(codec, pin_nid, per_pin->mux_nids,
+					    HDA_MAX_CONNECTIONS);
 
 	return 0;
 }
@@ -1517,6 +1539,7 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 	struct hdmi_spec *spec = codec->spec;
 	struct hdmi_eld *eld = &spec->temp_eld;
 	hda_nid_t pin_nid = per_pin->pin_nid;
+	int dev_id = per_pin->dev_id;
 	/*
 	 * Always execute a GetPinSense verb here, even when called from
 	 * hdmi_intrinsic_event; for some NVIDIA HW, the unsolicited
@@ -1529,7 +1552,7 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 	bool ret;
 	bool do_repoll = false;
 
-	present = snd_hda_jack_pin_sense(codec, pin_nid, per_pin->dev_id);
+	present = snd_hda_jack_pin_sense(codec, pin_nid, dev_id);
 
 	mutex_lock(&per_pin->lock);
 	eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
@@ -1543,8 +1566,8 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
 		codec->addr, pin_nid, eld->monitor_present, eld->eld_valid);
 
 	if (eld->eld_valid) {
-		if (spec->ops.pin_get_eld(codec, pin_nid, eld->eld_buffer,
-						     &eld->eld_size) < 0)
+		if (spec->ops.pin_get_eld(codec, pin_nid, dev_id,
+					  eld->eld_buffer, &eld->eld_size) < 0)
 			eld->eld_valid = false;
 		else {
 			if (snd_hdmi_parse_eld(codec, &eld->info, eld->eld_buffer,
@@ -1881,7 +1904,6 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 	struct hdmi_spec *spec = codec->spec;
 	int pin_idx;
 	struct hdmi_spec_per_pin *per_pin;
-	hda_nid_t pin_nid;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	bool non_pcm;
 	int pinctl, stripe;
@@ -1905,7 +1927,6 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 		goto unlock;
 	}
 	per_pin = get_pin(spec, pin_idx);
-	pin_nid = per_pin->pin_nid;
 
 	/* Verify pin:cvt selections to avoid silent audio after S3.
 	 * After S3, the audio driver restores pin:cvt selections
@@ -1920,8 +1941,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 	/* Call sync_audio_rate to set the N/CTS/M manually if necessary */
 	/* Todo: add DP1.2 MST audio support later */
 	if (codec_has_acomp(codec))
-		snd_hdac_sync_audio_rate(&codec->core, pin_nid, per_pin->dev_id,
-					 runtime->rate);
+		snd_hdac_sync_audio_rate(&codec->core, per_pin->pin_nid,
+					 per_pin->dev_id, runtime->rate);
 
 	non_pcm = check_non_pcm_per_cvt(codec, cvt_nid);
 	mutex_lock(&per_pin->lock);
@@ -1939,16 +1960,18 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 	hdmi_setup_audio_infoframe(codec, per_pin, non_pcm);
 	mutex_unlock(&per_pin->lock);
 	if (spec->dyn_pin_out) {
-		pinctl = snd_hda_codec_read(codec, pin_nid, 0,
+		snd_hda_set_dev_select(codec, per_pin->pin_nid,
+				       per_pin->dev_id);
+		pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
 					    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
-		snd_hda_codec_write(codec, pin_nid, 0,
+		snd_hda_codec_write(codec, per_pin->pin_nid, 0,
 				    AC_VERB_SET_PIN_WIDGET_CONTROL,
 				    pinctl | PIN_OUT);
 	}
 
 	/* snd_hda_set_dev_select() has been called before */
-	err = spec->ops.setup_stream(codec, cvt_nid, pin_nid,
-				 stream_tag, format);
+	err = spec->ops.setup_stream(codec, cvt_nid, per_pin->pin_nid,
+				     per_pin->dev_id, stream_tag, format);
  unlock:
 	mutex_unlock(&spec->pcm_lock);
 	return err;
@@ -2000,6 +2023,8 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
 		per_pin = get_pin(spec, pin_idx);
 
 		if (spec->dyn_pin_out) {
+			snd_hda_set_dev_select(codec, per_pin->pin_nid,
+					       per_pin->dev_id);
 			pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
 					AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
 			snd_hda_codec_write(codec, per_pin->pin_nid, 0,
@@ -2377,7 +2402,7 @@ static const struct hda_codec_ops generic_hdmi_patch_ops = {
 };
 
 static const struct hdmi_ops generic_standard_hdmi_ops = {
-	.pin_get_eld				= snd_hdmi_get_eld,
+	.pin_get_eld				= hdmi_pin_get_eld,
 	.pin_setup_infoframe			= hdmi_pin_setup_infoframe,
 	.pin_hbr_setup				= hdmi_pin_hbr_setup,
 	.setup_stream				= hdmi_setup_stream,
@@ -2575,7 +2600,8 @@ static void intel_haswell_fixup_connect_list(struct hda_codec *codec,
 	hda_nid_t conns[4];
 	int nconns;
 
-	nconns = snd_hda_get_connections(codec, nid, conns, ARRAY_SIZE(conns));
+	nconns = snd_hda_get_raw_connections(codec, nid, conns,
+					     ARRAY_SIZE(conns));
 	if (nconns == spec->num_cvts &&
 	    !memcmp(conns, spec->cvt_nids, spec->num_cvts * sizeof(hda_nid_t)))
 		return;
@@ -2753,10 +2779,12 @@ static void register_i915_notifier(struct hda_codec *codec)
 
 /* setup_stream ops override for HSW+ */
 static int i915_hsw_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
-				 hda_nid_t pin_nid, u32 stream_tag, int format)
+				 hda_nid_t pin_nid, int dev_id, u32 stream_tag,
+				 int format)
 {
 	haswell_verify_D0(codec, cvt_nid, pin_nid);
-	return hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
+	return hdmi_setup_stream(codec, cvt_nid, pin_nid, dev_id,
+				 stream_tag, format);
 }
 
 /* pin_cvt_fixup ops override for HSW+ and VLV+ */
@@ -3722,16 +3750,19 @@ static int patch_tegra_hdmi(struct hda_codec *codec)
 #define ATI_HBR_ENABLE 0x10
 
 static int atihdmi_pin_get_eld(struct hda_codec *codec, hda_nid_t nid,
-			   unsigned char *buf, int *eld_size)
+			       int dev_id, unsigned char *buf, int *eld_size)
 {
+	WARN_ON(dev_id != 0);
 	/* call hda_eld.c ATI/AMD-specific function */
 	return snd_hdmi_get_eld_ati(codec, nid, buf, eld_size,
 				    is_amdhdmi_rev3_or_later(codec));
 }
 
-static void atihdmi_pin_setup_infoframe(struct hda_codec *codec, hda_nid_t pin_nid, int ca,
+static void atihdmi_pin_setup_infoframe(struct hda_codec *codec,
+					hda_nid_t pin_nid, int dev_id, int ca,
 					int active_channels, int conn_type)
 {
+	WARN_ON(dev_id != 0);
 	snd_hda_codec_write(codec, pin_nid, 0, ATI_VERB_SET_CHANNEL_ALLOCATION, ca);
 }
 
@@ -3922,10 +3953,12 @@ static void atihdmi_paired_cea_alloc_to_tlv_chmap(struct hdac_chmap *hchmap,
 }
 
 static int atihdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
-				 bool hbr)
+				 int dev_id, bool hbr)
 {
 	int hbr_ctl, hbr_ctl_new;
 
+	WARN_ON(dev_id != 0);
+
 	hbr_ctl = snd_hda_codec_read(codec, pin_nid, 0, ATI_VERB_GET_HBR_CONTROL, 0);
 	if (hbr_ctl >= 0 && (hbr_ctl & ATI_HBR_CAPABLE)) {
 		if (hbr)
@@ -3951,9 +3984,9 @@ static int atihdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
 }
 
 static int atihdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
-				hda_nid_t pin_nid, u32 stream_tag, int format)
+				hda_nid_t pin_nid, int dev_id,
+				u32 stream_tag, int format)
 {
-
 	if (is_amdhdmi_rev3_or_later(codec)) {
 		int ramp_rate = 180; /* default as per AMD spec */
 		/* disable ramp-up/down for non-pcm as per AMD spec */
@@ -3963,7 +3996,8 @@ static int atihdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
 		snd_hda_codec_write(codec, cvt_nid, 0, ATI_VERB_SET_RAMP_RATE, ramp_rate);
 	}
 
-	return hdmi_setup_stream(codec, cvt_nid, pin_nid, stream_tag, format);
+	return hdmi_setup_stream(codec, cvt_nid, pin_nid, dev_id,
+				 stream_tag, format);
 }
 
 
-- 
2.16.4

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[alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Nikhil Mahale]

This patch adds DP-MST support for GK104+ NVIDIA codecs.

GK104+ NVIDIA codecs support DP-MST audio. These codecs have 4
output converters and 4 pin widgets, with 4 device entries per pin
widget for a total of 16 device entries.

This patch moves the existing patch_nvhdmi() definition to
patch_nvhdmi_legacy(), used by pre-GK104 NVIDIA codecs. Redefine
patch_nvhdmi() to enable DP-MST support by setting codec->dp_mst and
spec->dyn_pcm_assign.

Introduce fresh logic for dynamic pcm assignment, making
sure that new pcm assignments are compatible with the legacy static
per_pin-pmc assignment that existed in the days before DP-MST.

Signed-off-by: Nikhil Mahale <nmahale@nvidia.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
---
 sound/pci/hda/patch_hdmi.c | 95 +++++++++++++++++++++++++++++++++++-----------
 1 file changed, 73 insertions(+), 22 deletions(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 1ba485da17c0..7c2b251e96c5 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1337,15 +1337,32 @@ static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
 }
 
 static int hdmi_find_pcm_slot(struct hdmi_spec *spec,
-				struct hdmi_spec_per_pin *per_pin)
+			      struct hdmi_spec_per_pin *per_pin)
 {
 	int i;
 
-	/* try the prefer PCM */
-	if (!test_bit(per_pin->pin_nid_idx, &spec->pcm_bitmap))
+	/*
+	 * generic_hdmi_build_pcms() allocates (num_nids + dev_num - 1)
+	 * number of pcms.
+	 *
+	 * The per_pin of pin_nid_idx=n and dev_id=m prefers to get pcm-n
+	 * if m==0. This guarantees that dynamic pcm assignments are compatible
+	 * with the legacy static per_pin-pmc assignment that existed in the
+	 * days before DP-MST.
+	 *
+	 * per_pin of m!=0 prefers to get pcm=(num_nids + (m - 1)).
+	 */
+	if (per_pin->dev_id == 0 &&
+	    !test_bit(per_pin->pin_nid_idx, &spec->pcm_bitmap))
 		return per_pin->pin_nid_idx;
 
-	/* have a second try; check the "reserved area" over num_pins */
+	if (per_pin->dev_id != 0 &&
+	    !(test_bit(spec->num_nids + (per_pin->dev_id - 1),
+		&spec->pcm_bitmap))) {
+		return spec->num_nids + (per_pin->dev_id - 1);
+	}
+
+	/* have a second try; check the area over num_nids */
 	for (i = spec->num_nids; i < spec->pcm_used; i++) {
 		if (!test_bit(i, &spec->pcm_bitmap))
 			return i;
@@ -3519,6 +3536,40 @@ static int patch_nvhdmi(struct hda_codec *codec)
 	struct hdmi_spec *spec;
 	int err;
 
+	err = alloc_generic_hdmi(codec);
+	if (err < 0)
+		return err;
+	codec->dp_mst = true;
+
+	spec = codec->spec;
+	spec->dyn_pcm_assign = true;
+
+	err = hdmi_parse_codec(codec);
+	if (err < 0) {
+		generic_spec_free(codec);
+		return err;
+	}
+
+	generic_hdmi_init_per_pins(codec);
+
+	spec->dyn_pin_out = true;
+
+	spec->chmap.ops.chmap_cea_alloc_validate_get_type =
+		nvhdmi_chmap_cea_alloc_validate_get_type;
+	spec->chmap.ops.chmap_validate = nvhdmi_chmap_validate;
+
+	codec->link_down_at_suspend = 1;
+
+	generic_acomp_init(codec, &nvhdmi_audio_ops, nvhdmi_port2pin);
+
+	return 0;
+}
+
+static int patch_nvhdmi_legacy(struct hda_codec *codec)
+{
+	struct hdmi_spec *spec;
+	int err;
+
 	err = patch_generic_hdmi(codec);
 	if (err)
 		return err;
@@ -4127,25 +4178,25 @@ HDA_CODEC_ENTRY(0x10de0004, "GPU 04 HDMI",	patch_nvhdmi_8ch_7x),
 HDA_CODEC_ENTRY(0x10de0005, "MCP77/78 HDMI",	patch_nvhdmi_8ch_7x),
 HDA_CODEC_ENTRY(0x10de0006, "MCP77/78 HDMI",	patch_nvhdmi_8ch_7x),
 HDA_CODEC_ENTRY(0x10de0007, "MCP79/7A HDMI",	patch_nvhdmi_8ch_7x),
-HDA_CODEC_ENTRY(0x10de0008, "GPU 08 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0009, "GPU 09 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de000a, "GPU 0a HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de000b, "GPU 0b HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de000c, "MCP89 HDMI",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de000d, "GPU 0d HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0010, "GPU 10 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0011, "GPU 11 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0012, "GPU 12 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0013, "GPU 13 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0014, "GPU 14 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0015, "GPU 15 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0016, "GPU 16 HDMI/DP",	patch_nvhdmi),
+HDA_CODEC_ENTRY(0x10de0008, "GPU 08 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0009, "GPU 09 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de000a, "GPU 0a HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de000b, "GPU 0b HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de000c, "MCP89 HDMI",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de000d, "GPU 0d HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0010, "GPU 10 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0011, "GPU 11 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0012, "GPU 12 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0013, "GPU 13 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0014, "GPU 14 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0015, "GPU 15 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0016, "GPU 16 HDMI/DP",	patch_nvhdmi_legacy),
 /* 17 is known to be absent */
-HDA_CODEC_ENTRY(0x10de0018, "GPU 18 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de0019, "GPU 19 HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de001a, "GPU 1a HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de001b, "GPU 1b HDMI/DP",	patch_nvhdmi),
-HDA_CODEC_ENTRY(0x10de001c, "GPU 1c HDMI/DP",	patch_nvhdmi),
+HDA_CODEC_ENTRY(0x10de0018, "GPU 18 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de0019, "GPU 19 HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de001a, "GPU 1a HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de001b, "GPU 1b HDMI/DP",	patch_nvhdmi_legacy),
+HDA_CODEC_ENTRY(0x10de001c, "GPU 1c HDMI/DP",	patch_nvhdmi_legacy),
 HDA_CODEC_ENTRY(0x10de0020, "Tegra30 HDMI",	patch_tegra_hdmi),
 HDA_CODEC_ENTRY(0x10de0022, "Tegra114 HDMI",	patch_tegra_hdmi),
 HDA_CODEC_ENTRY(0x10de0028, "Tegra124 HDMI",	patch_tegra_hdmi),
-- 
2.16.4

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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Martin Regner]

Hi there,

since i updated to kernel 5.5 i have no sound over hdmi anymore (GeForce 
RTX 2070).

With the previous kernel 5.4.14 everything is fine.

Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c 2 -r 
44100, pavucontrol shows all hdmi sound devices as unplugged.

I bisected it down to this commit 
(5398e94fb753d022301825ebfa5f7cf8a660d8eb) and changed the line

HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)

to

HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi_legacy)

Now it's working again. I'm not sure if this is a problem with 
pulseaudio or if the RTX 2070 does not support the mentioned codec.

Thanks in advance

Martin

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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Takashi Iwai]

On Sat, 01 Feb 2020 16:28:08 +0100,
Martin Regner wrote:
> 
> Hi there,
> 
> since i updated to kernel 5.5 i have no sound over hdmi anymore (GeForce RTX
> 2070).
> 
> With the previous kernel 5.4.14 everything is fine.
> 
> Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c 2 -r
> 44100, pavucontrol shows all hdmi sound devices as unplugged.
> 
> I bisected it down to this commit (5398e94fb753d022301825ebfa5f7cf8a660d8eb)
> and changed the line
> 
> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)
> 
> to
> 
> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi_legacy)
> 
> Now it's working again. I'm not sure if this is a problem with pulseaudio or
> if the RTX 2070 does not support the mentioned codec.

The runtime PM turns off the link, so the hotplug notification won't
be delivered as default.  Please try reading the corresponding proc
file, /proc/asound/card*/codec* file.  This may power up the codec and 
trigger the hotplug detection if that's the cause.


Takashi
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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Martin Regner]

Hi Takashi,

thanks for your reply. I tried that with

cat /proc/asound/card0/codec#0

but that doesn't help. I'm digging me through the kernel config right 
now. May have to change something else.

I simply could create a patch on my gentoo system switching from 
patch_nvhdmi to patch_nvhdmi_legacy for every new kernel, but that won't 
work forever.

If you have other thinks i could try i'd appreciate to hear them.

kind regards
Martin

On 02.02.20 09:37, Takashi Iwai wrote:
> On Sat, 01 Feb 2020 16:28:08 +0100,
> Martin Regner wrote:
>> Hi there,
>>
>> since i updated to kernel 5.5 i have no sound over hdmi anymore (GeForce RTX
>> 2070).
>>
>> With the previous kernel 5.4.14 everything is fine.
>>
>> Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c 2 -r
>> 44100, pavucontrol shows all hdmi sound devices as unplugged.
>>
>> I bisected it down to this commit (5398e94fb753d022301825ebfa5f7cf8a660d8eb)
>> and changed the line
>>
>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)
>>
>> to
>>
>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi_legacy)
>>
>> Now it's working again. I'm not sure if this is a problem with pulseaudio or
>> if the RTX 2070 does not support the mentioned codec.
> The runtime PM turns off the link, so the hotplug notification won't
> be delivered as default.  Please try reading the corresponding proc
> file, /proc/asound/card*/codec* file.  This may power up the codec and
> trigger the hotplug detection if that's the cause.
>
>
> Takashi


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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Jaroslav Kysela]

Dne 02. 02. 20 v 15:18 Martin Regner napsal(a):
> Hi Takashi,
> 
> thanks for your reply. I tried that with
> 
> cat /proc/asound/card0/codec#0
> 
> but that doesn't help. I'm digging me through the kernel config right
> now. May have to change something else.
> 
> I simply could create a patch on my gentoo system switching from
> patch_nvhdmi to patch_nvhdmi_legacy for every new kernel, but that won't
> work forever.
> 
> If you have other thinks i could try i'd appreciate to hear them.

You may try to disable PM:

echo on > /sys/bus/pci/devices/0000\:01\:00.1/power/control

				Jaroslav


> 
> kind regards
> Martin
> 
> On 02.02.20 09:37, Takashi Iwai wrote:
>> On Sat, 01 Feb 2020 16:28:08 +0100,
>> Martin Regner wrote:
>>> Hi there,
>>>
>>> since i updated to kernel 5.5 i have no sound over hdmi anymore (GeForce RTX
>>> 2070).
>>>
>>> With the previous kernel 5.4.14 everything is fine.
>>>
>>> Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c 2 -r
>>> 44100, pavucontrol shows all hdmi sound devices as unplugged.
>>>
>>> I bisected it down to this commit (5398e94fb753d022301825ebfa5f7cf8a660d8eb)
>>> and changed the line
>>>
>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)
>>>
>>> to
>>>
>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi_legacy)
>>>
>>> Now it's working again. I'm not sure if this is a problem with pulseaudio or
>>> if the RTX 2070 does not support the mentioned codec.
>> The runtime PM turns off the link, so the hotplug notification won't
>> be delivered as default.  Please try reading the corresponding proc
>> file, /proc/asound/card*/codec* file.  This may power up the codec and
>> trigger the hotplug detection if that's the cause.
>>
>>
>> Takashi
> 
> 
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> 


-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Martin Regner]

Hi Jaroslav,

thanks for the tip. I tried this (in my case echo on  > 
/sys/bus/pci/devices/0000\:09\:00.1/power/control) but that didn't help.

If i comment out the line

spec->dyn_pcm_assign = true;

in patch_nvhdmi sound is working again.

Curiously nobody else seems to have this problem. This makes me think 
the problem lies elsewhere but i have no more ideas at the moment.

On 03.02.20 00:00, Jaroslav Kysela wrote:
> Dne 02. 02. 20 v 15:18 Martin Regner napsal(a):
>> Hi Takashi,
>>
>> thanks for your reply. I tried that with
>>
>> cat /proc/asound/card0/codec#0
>>
>> but that doesn't help. I'm digging me through the kernel config right
>> now. May have to change something else.
>>
>> I simply could create a patch on my gentoo system switching from
>> patch_nvhdmi to patch_nvhdmi_legacy for every new kernel, but that won't
>> work forever.
>>
>> If you have other thinks i could try i'd appreciate to hear them.
>
> You may try to disable PM:
>
> echo on > /sys/bus/pci/devices/0000\:01\:00.1/power/control
>
>                 Jaroslav
>
>
>>
>> kind regards
>> Martin
>>
>> On 02.02.20 09:37, Takashi Iwai wrote:
>>> On Sat, 01 Feb 2020 16:28:08 +0100,
>>> Martin Regner wrote:
>>>> Hi there,
>>>>
>>>> since i updated to kernel 5.5 i have no sound over hdmi anymore 
>>>> (GeForce RTX
>>>> 2070).
>>>>
>>>> With the previous kernel 5.4.14 everything is fine.
>>>>
>>>> Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c 
>>>> 2 -r
>>>> 44100, pavucontrol shows all hdmi sound devices as unplugged.
>>>>
>>>> I bisected it down to this commit 
>>>> (5398e94fb753d022301825ebfa5f7cf8a660d8eb)
>>>> and changed the line
>>>>
>>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)
>>>>
>>>> to
>>>>
>>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP", patch_nvhdmi_legacy)
>>>>
>>>> Now it's working again. I'm not sure if this is a problem with 
>>>> pulseaudio or
>>>> if the RTX 2070 does not support the mentioned codec.
>>> The runtime PM turns off the link, so the hotplug notification won't
>>> be delivered as default.  Please try reading the corresponding proc
>>> file, /proc/asound/card*/codec* file.  This may power up the codec and
>>> trigger the hotplug detection if that's the cause.
>>>
>>>
>>> Takashi
>>
>>
>> _______________________________________________
>> Alsa-devel mailing list
>> Alsa-devel@alsa-project.org
>> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>>
>
>

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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Jaroslav Kysela]

Dne 03. 02. 20 v 0:50 Martin Regner napsal(a):
> Hi Jaroslav,
> 
> thanks for the tip. I tried this (in my case echo on  >
> /sys/bus/pci/devices/0000\:09\:00.1/power/control) but that didn't help.
> 
> If i comment out the line
> 
> spec->dyn_pcm_assign = true;
> 
> in patch_nvhdmi sound is working again.

Could you show us (upload it to the alsa server and post only URLs) the output 
from alsa-info.sh for both variants (spec->dyn_pcm_assign = true and false) ?

					Thanks,
						Jaroslav

> 
> Curiously nobody else seems to have this problem. This makes me think
> the problem lies elsewhere but i have no more ideas at the moment.
> 
> On 03.02.20 00:00, Jaroslav Kysela wrote:
>> Dne 02. 02. 20 v 15:18 Martin Regner napsal(a):
>>> Hi Takashi,
>>>
>>> thanks for your reply. I tried that with
>>>
>>> cat /proc/asound/card0/codec#0
>>>
>>> but that doesn't help. I'm digging me through the kernel config right
>>> now. May have to change something else.
>>>
>>> I simply could create a patch on my gentoo system switching from
>>> patch_nvhdmi to patch_nvhdmi_legacy for every new kernel, but that won't
>>> work forever.
>>>
>>> If you have other thinks i could try i'd appreciate to hear them.
>>
>> You may try to disable PM:
>>
>> echo on > /sys/bus/pci/devices/0000\:01\:00.1/power/control
>>
>>                  Jaroslav
>>
>>
>>>
>>> kind regards
>>> Martin
>>>
>>> On 02.02.20 09:37, Takashi Iwai wrote:
>>>> On Sat, 01 Feb 2020 16:28:08 +0100,
>>>> Martin Regner wrote:
>>>>> Hi there,
>>>>>
>>>>> since i updated to kernel 5.5 i have no sound over hdmi anymore
>>>>> (GeForce RTX
>>>>> 2070).
>>>>>
>>>>> With the previous kernel 5.4.14 everything is fine.
>>>>>
>>>>> Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c
>>>>> 2 -r
>>>>> 44100, pavucontrol shows all hdmi sound devices as unplugged.
>>>>>
>>>>> I bisected it down to this commit
>>>>> (5398e94fb753d022301825ebfa5f7cf8a660d8eb)
>>>>> and changed the line
>>>>>
>>>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)
>>>>>
>>>>> to
>>>>>
>>>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP", patch_nvhdmi_legacy)
>>>>>
>>>>> Now it's working again. I'm not sure if this is a problem with
>>>>> pulseaudio or
>>>>> if the RTX 2070 does not support the mentioned codec.
>>>> The runtime PM turns off the link, so the hotplug notification won't
>>>> be delivered as default.  Please try reading the corresponding proc
>>>> file, /proc/asound/card*/codec* file.  This may power up the codec and
>>>> trigger the hotplug detection if that's the cause.
>>>>
>>>>
>>>> Takashi
>>>
>>>
>>> _______________________________________________
>>> Alsa-devel mailing list
>>> Alsa-devel@alsa-project.org
>>> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>>>
>>
>>
> 


-- 
Jaroslav Kysela <perex@perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
_______________________________________________
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Re: [alsa-devel] [PATCH v3 4/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Nikhil Mahale]

hdmi_present_sense()
  |-> hdmi_present_sense_via_verbs()
code path need to query PCM jack using pin_idx_to_jack() function and update
its status, just like sync_eld_via_acomp().

Sending patch to get it fixed.

Thanks,
Nikhil Mahale

On 2/3/20 1:07 PM, Jaroslav Kysela wrote:
> External email: Use caution opening links or attachments
> 
> 
> Dne 03. 02. 20 v 0:50 Martin Regner napsal(a):
>> Hi Jaroslav,
>>
>> thanks for the tip. I tried this (in my case echo on  >
>> /sys/bus/pci/devices/0000\:09\:00.1/power/control) but that didn't help.
>>
>> If i comment out the line
>>
>> spec->dyn_pcm_assign = true;
>>
>> in patch_nvhdmi sound is working again.
> 
> Could you show us (upload it to the alsa server and post only URLs) the output
> from alsa-info.sh for both variants (spec->dyn_pcm_assign = true and false) ?
> 
>                                        Thanks,
>                                                Jaroslav
> 
>>
>> Curiously nobody else seems to have this problem. This makes me think
>> the problem lies elsewhere but i have no more ideas at the moment.
>>
>> On 03.02.20 00:00, Jaroslav Kysela wrote:
>>> Dne 02. 02. 20 v 15:18 Martin Regner napsal(a):
>>>> Hi Takashi,
>>>>
>>>> thanks for your reply. I tried that with
>>>>
>>>> cat /proc/asound/card0/codec#0
>>>>
>>>> but that doesn't help. I'm digging me through the kernel config right
>>>> now. May have to change something else.
>>>>
>>>> I simply could create a patch on my gentoo system switching from
>>>> patch_nvhdmi to patch_nvhdmi_legacy for every new kernel, but that won't
>>>> work forever.
>>>>
>>>> If you have other thinks i could try i'd appreciate to hear them.
>>>
>>> You may try to disable PM:
>>>
>>> echo on > /sys/bus/pci/devices/0000\:01\:00.1/power/control
>>>
>>>                  Jaroslav
>>>
>>>
>>>>
>>>> kind regards
>>>> Martin
>>>>
>>>> On 02.02.20 09:37, Takashi Iwai wrote:
>>>>> On Sat, 01 Feb 2020 16:28:08 +0100,
>>>>> Martin Regner wrote:
>>>>>> Hi there,
>>>>>>
>>>>>> since i updated to kernel 5.5 i have no sound over hdmi anymore
>>>>>> (GeForce RTX
>>>>>> 2070).
>>>>>>
>>>>>> With the previous kernel 5.4.14 everything is fine.
>>>>>>
>>>>>> Although i got sound with speaker-test -D hdmi:CARD=NVidia,DEV=2 -c
>>>>>> 2 -r
>>>>>> 44100, pavucontrol shows all hdmi sound devices as unplugged.
>>>>>>
>>>>>> I bisected it down to this commit
>>>>>> (5398e94fb753d022301825ebfa5f7cf8a660d8eb)
>>>>>> and changed the line
>>>>>>
>>>>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP",  patch_nvhdmi)
>>>>>>
>>>>>> to
>>>>>>
>>>>>> HDA_CODEC_ENTRY(0x10de0093, "GPU 93 HDMI/DP", patch_nvhdmi_legacy)
>>>>>>
>>>>>> Now it's working again. I'm not sure if this is a problem with
>>>>>> pulseaudio or
>>>>>> if the RTX 2070 does not support the mentioned codec.
>>>>> The runtime PM turns off the link, so the hotplug notification won't
>>>>> be delivered as default.  Please try reading the corresponding proc
>>>>> file, /proc/asound/card*/codec* file.  This may power up the codec and
>>>>> trigger the hotplug detection if that's the cause.
>>>>>
>>>>>
>>>>> Takashi
>>>>
>>>>
>>>> _______________________________________________
>>>> Alsa-devel mailing list
>>>> Alsa-devel@alsa-project.org
>>>> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>>>>
>>>
>>>
>>
> 
> 
> -- 
> Jaroslav Kysela <perex@perex.cz>
> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
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Re: [alsa-devel] [PATCH v3 0/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Takashi Iwai]

On Tue, 19 Nov 2019 09:47:06 +0100,
Nikhil Mahale wrote:
> 
> Today, DisplayPort multi-stream transport (DP-MST) audio is not
> supported on codec drivers which don't use the audio component
> (acomp) binding.
> 
> The commit ade49db337a9 (ALSA: hda/hdmi - Allow audio component for
> AMD/ATI and Nvidia HDMI) added the DRM audio component binding for
> the NVIDIA codec drivers, but the traditional HD-audio unsolicited
> event code path is still in use by the proprietary NVIDIA graphics
> driver.
> 
> This patch set adds DP-MST audio support for non-acomp codec drivers
> which use the traditional HD-audio unsolicited event code path. This
> patch set adds DP-MST support for NVIDIA codecs.
> 
> The patch set has been tested for HDMI/DP-SST/DP-MST(4 dp-mst audio
> streams) configurations on NVIDIA Kepler and Maxwell GPUs, using
> both the nouveau driver and the proprietary NVIDIA graphics driver.
> 
> Nikhil Mahale (4):
>   ALSA: hda - Rename snd_hda_pin_sense to snd_hda_jack_pin_sense
>   ALSA: hda - Add DP-MST jack support
>   ALSA: hda - Add DP-MST support for non-acomp codecs
>   ALSA: hda - Add DP-MST support for NVIDIA codecs

OK, you've done in time for 5.5 :)
Now applied all four patches.

Kai, please let me know if the intel CI catches any issue with these
changes.


Thanks!

Takashi
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Re: [alsa-devel] [PATCH v3 0/4] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Kai Vehmanen]

Hi Takashi and Nikhil,

On Tue, 19 Nov 2019, Takashi Iwai wrote:

> OK, you've done in time for 5.5 :)
> Now applied all four patches.
> 
> Kai, please let me know if the intel CI catches any issue with these
> changes.

tests just completed and no issues found so seem good to go.

Br, Kai
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