ALSA: hda - Fix secondary SPDIF on VT1708S and VT1702 codecs

VIA VT1708S and VT1702 codecs can have two SPDIF outputs.  One of them
should have been handled as the extra digital out, but it's not
properly accessed.

This patch fixes the handling of the secondary SPDIF on these codecs
with the slave dig-out as found in patch_sigmatel.c.  This makes the
use of such a device easier (for normal users).
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_via.c

@@ -205,7 +205,7 @@ struct via_spec {
 
 	/* playback */
 	struct hda_multi_out multiout;
-	hda_nid_t extra_dig_out_nid;
+	hda_nid_t slave_dig_outs[2];
 
 	/* capture */
 	unsigned int num_adc_nids;
@@ -731,21 +731,6 @@ static int via_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
 	return snd_hda_multi_out_dig_close(codec, &spec->multiout);
 }
 
-/* setup SPDIF output stream */
-static void setup_dig_playback_stream(struct hda_codec *codec, hda_nid_t nid,
-				 unsigned int stream_tag, unsigned int format)
-{
-	/* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
-	if (codec->spdif_ctls & AC_DIG1_ENABLE)
-		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
-				    codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);
-	snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
-	/* turn on again (if needed) */
-	if (codec->spdif_ctls & AC_DIG1_ENABLE)
-		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
-				    codec->spdif_ctls & 0xff);
-}
-
 static int via_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 					struct hda_codec *codec,
 					unsigned int stream_tag,
@@ -753,19 +738,16 @@ static int via_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
 					struct snd_pcm_substream *substream)
 {
 	struct via_spec *spec = codec->spec;
-	hda_nid_t nid;
-
-	/* 1st or 2nd S/PDIF */
-	if (substream->number == 0)
-		nid = spec->multiout.dig_out_nid;
-	else if (substream->number == 1)
-		nid = spec->extra_dig_out_nid;
-	else
-		return -1;
+	return snd_hda_multi_out_dig_prepare(codec, &spec->multiout,
+					     stream_tag, format, substream);
+}
 
-	mutex_lock(&codec->spdif_mutex);
-	setup_dig_playback_stream(codec, nid, stream_tag, format);
-	mutex_unlock(&codec->spdif_mutex);
+static int via_dig_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
+					struct hda_codec *codec,
+					struct snd_pcm_substream *substream)
+{
+	struct via_spec *spec = codec->spec;
+	snd_hda_multi_out_dig_cleanup(codec, &spec->multiout);
 	return 0;
 }
 
@@ -842,7 +824,8 @@ static struct hda_pcm_stream vt1708_pcm_digital_playback = {
 	.ops = {
 		.open = via_dig_playback_pcm_open,
 		.close = via_dig_playback_pcm_close,
-		.prepare = via_dig_playback_pcm_prepare
+		.prepare = via_dig_playback_pcm_prepare,
+		.cleanup = via_dig_playback_pcm_cleanup
 	},
 };
 
@@ -874,13 +857,6 @@ static int via_build_controls(struct hda_codec *codec)
 		if (err < 0)
 			return err;
 		spec->multiout.share_spdif = 1;
-
-		if (spec->extra_dig_out_nid) {
-			err = snd_hda_create_spdif_out_ctls(codec,
-						    spec->extra_dig_out_nid);
-			if (err < 0)
-				return err;
-		}
 	}
 	if (spec->dig_in_nid) {
 		err = snd_hda_create_spdif_in_ctls(codec, spec->dig_in_nid);
@@ -1013,10 +989,6 @@ static void via_unsol_event(struct hda_codec *codec,
 		via_gpio_control(codec);
 }
 
-static hda_nid_t slave_dig_outs[] = {
-	0,
-};
-
 static int via_init(struct hda_codec *codec)
 {
 	struct via_spec *spec = codec->spec;
@@ -1051,8 +1023,9 @@ static int via_init(struct hda_codec *codec)
 		snd_hda_codec_write(codec, spec->autocfg.dig_in_pin, 0,
 				    AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN);
 
-	/* no slave outs */
-	codec->slave_dig_outs = slave_dig_outs;
+	/* assign slave outs */
+	if (spec->slave_dig_outs[0])
+		codec->slave_dig_outs = spec->slave_dig_outs;
 
  	return 0;
 }
@@ -2134,7 +2107,8 @@ static struct hda_pcm_stream vt1708B_pcm_digital_playback = {
 	.ops = {
 		.open = via_dig_playback_pcm_open,
 		.close = via_dig_playback_pcm_close,
-		.prepare = via_dig_playback_pcm_prepare
+		.prepare = via_dig_playback_pcm_prepare,
+		.cleanup = via_dig_playback_pcm_cleanup
 	},
 };
 
@@ -2589,14 +2563,15 @@ static struct hda_pcm_stream vt1708S_pcm_analog_capture = {
 };
 
 static struct hda_pcm_stream vt1708S_pcm_digital_playback = {
-	.substreams = 2,
+	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 2,
 	/* NID is set in via_build_pcms */
 	.ops = {
 		.open = via_dig_playback_pcm_open,
 		.close = via_dig_playback_pcm_close,
-		.prepare = via_dig_playback_pcm_prepare
+		.prepare = via_dig_playback_pcm_prepare,
+		.cleanup = via_dig_playback_pcm_cleanup
 	},
 };
 
@@ -2805,14 +2780,37 @@ static int vt1708S_auto_create_analog_input_ctls(struct via_spec *spec,
 	return 0;
 }
 
+/* fill out digital output widgets; one for master and one for slave outputs */
+static void fill_dig_outs(struct hda_codec *codec)
+{
+	struct via_spec *spec = codec->spec;
+	int i;
+
+	for (i = 0; i < spec->autocfg.dig_outs; i++) {
+		hda_nid_t nid;
+		int conn;
+
+		nid = spec->autocfg.dig_out_pins[i];
+		if (!nid)
+			continue;
+		conn = snd_hda_get_connections(codec, nid, &nid, 1);
+		if (conn < 1)
+			continue;
+		if (!spec->multiout.dig_out_nid)
+			spec->multiout.dig_out_nid = nid;
+		else {
+			spec->slave_dig_outs[0] = nid;
+			break; /* at most two dig outs */
+		}
+	}
+}
+
 static int vt1708S_parse_auto_config(struct hda_codec *codec)
 {
 	struct via_spec *spec = codec->spec;
 	int err;
-	static hda_nid_t vt1708s_ignore[] = {0x21, 0};
 
-	err = snd_hda_parse_pin_def_config(codec, &spec->autocfg,
-					   vt1708s_ignore);
+	err = snd_hda_parse_pin_def_config(codec, &spec->autocfg, NULL);
 	if (err < 0)
 		return err;
 	err = vt1708S_auto_fill_dac_nids(spec, &spec->autocfg);
@@ -2833,10 +2831,7 @@ static int vt1708S_parse_auto_config(struct hda_codec *codec)
 
 	spec->multiout.max_channels = spec->multiout.num_dacs * 2;
 
-	if (spec->autocfg.dig_outs)
-		spec->multiout.dig_out_nid = VT1708S_DIGOUT_NID;
-
-	spec->extra_dig_out_nid = 0x15;
+	fill_dig_outs(codec);
 
 	if (spec->kctls.list)
 		spec->mixers[spec->num_mixers++] = spec->kctls.list;
@@ -3000,7 +2995,8 @@ static struct hda_pcm_stream vt1702_pcm_digital_playback = {
 	.ops = {
 		.open = via_dig_playback_pcm_open,
 		.close = via_dig_playback_pcm_close,
-		.prepare = via_dig_playback_pcm_prepare
+		.prepare = via_dig_playback_pcm_prepare,
+		.cleanup = via_dig_playback_pcm_cleanup
 	},
 };
 
@@ -3128,10 +3124,8 @@ static int vt1702_parse_auto_config(struct hda_codec *codec)
 {
 	struct via_spec *spec = codec->spec;
 	int err;
-	static hda_nid_t vt1702_ignore[] = {0x1C, 0};
 
-	err = snd_hda_parse_pin_def_config(codec, &spec->autocfg,
-					   vt1702_ignore);
+	err = snd_hda_parse_pin_def_config(codec, &spec->autocfg, NULL);
 	if (err < 0)
 		return err;
 	err = vt1702_auto_fill_dac_nids(spec, &spec->autocfg);
@@ -3152,10 +3146,7 @@ static int vt1702_parse_auto_config(struct hda_codec *codec)
 
 	spec->multiout.max_channels = spec->multiout.num_dacs * 2;
 
-	if (spec->autocfg.dig_outs)
-		spec->multiout.dig_out_nid = VT1702_DIGOUT_NID;
-
-	spec->extra_dig_out_nid = 0x1B;
+	fill_dig_outs(codec);
 
 	if (spec->kctls.list)
 		spec->mixers[spec->num_mixers++] = spec->kctls.list;