ALSA: hda: SPDIF mux controls

Dynamically create mux controls for SPDIF outs on certain IDT/Sigmatel codecs.
Signed-off-by: NMatthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>

sound/pci/hda/patch_sigmatel.c

@@ -173,6 +173,9 @@ struct sigmatel_spec {
 	unsigned int num_dmics;
 	hda_nid_t *dmux_nids;
 	unsigned int num_dmuxes;
+	hda_nid_t *smux_nids;
+	unsigned int num_smuxes;
+
 	hda_nid_t dig_in_nid;
 	hda_nid_t mono_nid;
 	hda_nid_t anabeep_nid;
@@ -193,6 +196,8 @@ struct sigmatel_spec {
 	unsigned int cur_dmux[2];
 	struct hda_input_mux *input_mux;
 	unsigned int cur_mux[3];
+	struct hda_input_mux *sinput_mux;
+	unsigned int cur_smux[2];
 	unsigned int powerdown_adcs;
 
 	/* i/o switches */
@@ -209,6 +214,7 @@ struct sigmatel_spec {
 	struct snd_kcontrol_new *kctl_alloc;
 	struct hda_input_mux private_dimux;
 	struct hda_input_mux private_imux;
+	struct hda_input_mux private_smux;
 	struct hda_input_mux private_mono_mux;
 };
 
@@ -251,6 +257,10 @@ static hda_nid_t stac92hd73xx_dmux_nids[2] = {
 	0x20, 0x21,
 };
 
+static hda_nid_t stac92hd73xx_smux_nids[2] = {
+	0x22, 0x23,
+};
+
 #define STAC92HD83XXX_NUM_DMICS	2
 static hda_nid_t stac92hd83xxx_dmic_nids[STAC92HD83XXX_NUM_DMICS + 1] = {
 	0x11, 0x12, 0
@@ -294,6 +304,10 @@ static hda_nid_t stac92hd71bxx_dmux_nids[1] = {
 	0x1c,
 };
 
+static hda_nid_t stac92hd71bxx_smux_nids[2] = {
+	0x24, 0x25,
+};
+
 static hda_nid_t stac92hd71bxx_dac_nids[1] = {
 	0x10, /*0x11, */
 };
@@ -340,6 +354,10 @@ static hda_nid_t stac927x_mux_nids[3] = {
         0x15, 0x16, 0x17
 };
 
+static hda_nid_t stac927x_smux_nids[1] = {
+	0x21,
+};
+
 static hda_nid_t stac927x_dac_nids[6] = {
 	0x02, 0x03, 0x04, 0x05, 0x06, 0
 };
@@ -365,6 +383,10 @@ static hda_nid_t stac9205_dmux_nids[1] = {
 	0x1d,
 };
 
+static hda_nid_t stac9205_smux_nids[1] = {
+	0x21,
+};
+
 #define STAC9205_NUM_DMICS	2
 static hda_nid_t stac9205_dmic_nids[STAC9205_NUM_DMICS + 1] = {
         0x17, 0x18, 0
@@ -388,7 +410,7 @@ static hda_nid_t stac922x_pin_nids[10] = {
 static hda_nid_t stac92hd73xx_pin_nids[13] = {
 	0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
 	0x0f, 0x10, 0x11, 0x12, 0x13,
-	0x14, 0x1e, 0x22
+	0x14, 0x22, 0x23
 };
 
 static hda_nid_t stac92hd83xxx_pin_nids[14] = {
@@ -443,6 +465,36 @@ static int stac92xx_dmux_enum_put(struct snd_kcontrol *kcontrol,
 			spec->dmux_nids[dmux_idx], &spec->cur_dmux[dmux_idx]);
 }
 
+static int stac92xx_smux_enum_info(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_info *uinfo)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct sigmatel_spec *spec = codec->spec;
+	return snd_hda_input_mux_info(spec->sinput_mux, uinfo);
+}
+
+static int stac92xx_smux_enum_get(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct sigmatel_spec *spec = codec->spec;
+	unsigned int smux_idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
+
+	ucontrol->value.enumerated.item[0] = spec->cur_smux[smux_idx];
+	return 0;
+}
+
+static int stac92xx_smux_enum_put(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct sigmatel_spec *spec = codec->spec;
+	unsigned int smux_idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
+
+	return snd_hda_input_mux_put(codec, spec->sinput_mux, ucontrol,
+			spec->smux_nids[smux_idx], &spec->cur_smux[smux_idx]);
+}
+
 static int stac92xx_mux_enum_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 {
 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
@@ -993,6 +1045,15 @@ static struct snd_kcontrol_new stac_dmux_mixer = {
 	.put = stac92xx_dmux_enum_put,
 };
 
+static struct snd_kcontrol_new stac_smux_mixer = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "IEC958 Mux",
+	/* count set later */
+	.info = stac92xx_smux_enum_info,
+	.get = stac92xx_smux_enum_get,
+	.put = stac92xx_smux_enum_put,
+};
+
 static const char *slave_vols[] = {
 	"Front Playback Volume",
 	"Surround Playback Volume",
@@ -1044,6 +1105,13 @@ static int stac92xx_build_controls(struct hda_codec *codec)
 		if (err < 0)
 			return err;
 	}
+	if (spec->num_smuxes > 0) {
+		stac_smux_mixer.count = spec->num_smuxes;
+		err = snd_ctl_add(codec->bus->card,
+				  snd_ctl_new1(&stac_smux_mixer, codec));
+		if (err < 0)
+			return err;
+	}
 
 	if (spec->multiout.dig_out_nid) {
 		err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
@@ -2811,6 +2879,34 @@ static int stac92xx_auto_create_mux_input_ctls(struct hda_codec *codec)
 	return 0;
 };
 
+static const char *stac92xx_spdif_labels[3] = {
+	"Digital Playback", "Analog Mux 1", "Analog Mux 2"
+};
+
+static int stac92xx_auto_create_spdif_mux_ctls(struct hda_codec *codec)
+{
+	struct sigmatel_spec *spec = codec->spec;
+	struct hda_input_mux *spdif_mux = &spec->private_smux;
+	int i, num_cons;
+	hda_nid_t con_lst[ARRAY_SIZE(stac92xx_spdif_labels)];
+
+	num_cons = snd_hda_get_connections(codec,
+				spec->smux_nids[0],
+				con_lst,
+				HDA_MAX_NUM_INPUTS);
+	if (!num_cons || num_cons > ARRAY_SIZE(stac92xx_spdif_labels))
+		return -EINVAL;
+
+	for (i = 0; i < num_cons; i++) {
+		spdif_mux->items[spdif_mux->num_items].label =
+					stac92xx_spdif_labels[i];
+		spdif_mux->items[spdif_mux->num_items].index = i;
+		spdif_mux->num_items++;
+	}
+
+	return 0;
+}
+
 /* labels for dmic mux inputs */
 static const char *stac92xx_dmic_labels[5] = {
 	"Analog Inputs", "Digital Mic 1", "Digital Mic 2",
@@ -3114,6 +3210,11 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
 		if (err < 0)
 			return err;
 	}
+	if (spec->num_smuxes > 0) {
+		err = stac92xx_auto_create_spdif_mux_ctls(codec);
+		if (err < 0)
+			return err;
+	}
 
 	spec->multiout.max_channels = spec->multiout.num_dacs * 2;
 	if (spec->multiout.max_channels > 2)
@@ -3130,6 +3231,7 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
 	spec->input_mux = &spec->private_imux;
 	if (!spec->dinput_mux)
 		spec->dinput_mux = &spec->private_dimux;
+	spec->sinput_mux = &spec->private_smux;
 	spec->mono_mux = &spec->private_mono_mux;
 
 	return 1;
@@ -3800,10 +3902,12 @@ static int patch_stac92hd73xx(struct hda_codec *codec)
 	spec->adc_nids = stac92hd73xx_adc_nids;
 	spec->dmic_nids = stac92hd73xx_dmic_nids;
 	spec->dmux_nids = stac92hd73xx_dmux_nids;
+	spec->smux_nids = stac92hd73xx_smux_nids;
 
 	spec->num_muxes = ARRAY_SIZE(stac92hd73xx_mux_nids);
 	spec->num_adcs = ARRAY_SIZE(stac92hd73xx_adc_nids);
 	spec->num_dmuxes = ARRAY_SIZE(stac92hd73xx_dmux_nids);
+	spec->num_smuxes = ARRAY_SIZE(stac92hd73xx_smux_nids);
 	spec->dinput_mux = &stac92hd73xx_dmux;
 	/* GPIO0 High = Enable EAPD */
 	spec->eapd_mask = spec->gpio_mask = spec->gpio_dir = 0x1;
@@ -3842,7 +3946,7 @@ static int patch_stac92hd73xx(struct hda_codec *codec)
 	spec->num_pwrs = ARRAY_SIZE(stac92hd73xx_pwr_nids);
 	spec->pwr_nids = stac92hd73xx_pwr_nids;
 
-	err = stac92xx_parse_auto_config(codec, 0x22, 0x24);
+	err = stac92xx_parse_auto_config(codec, 0x25, 0x27);
 
 	if (!err) {
 		if (spec->board_config < 0) {
@@ -4081,11 +4185,13 @@ static int patch_stac92hd71bxx(struct hda_codec *codec)
 	spec->adc_nids = stac92hd71bxx_adc_nids;
 	spec->dmic_nids = stac92hd71bxx_dmic_nids;
 	spec->dmux_nids = stac92hd71bxx_dmux_nids;
+	spec->smux_nids = stac92hd71bxx_smux_nids;
 	spec->pwr_nids = stac92hd71bxx_pwr_nids;
 
 	spec->num_muxes = ARRAY_SIZE(stac92hd71bxx_mux_nids);
 	spec->num_adcs = ARRAY_SIZE(stac92hd71bxx_adc_nids);
 	spec->num_dmics = STAC92HD71BXX_NUM_DMICS;
+	spec->num_smuxes = ARRAY_SIZE(stac92hd71bxx_smux_nids);
 	spec->num_dmuxes = ARRAY_SIZE(stac92hd71bxx_dmux_nids);
 
 	spec->multiout.num_dacs = 1;
@@ -4254,6 +4360,8 @@ static int patch_stac927x(struct hda_codec *codec)
 	spec->num_adcs = ARRAY_SIZE(stac927x_adc_nids);
 	spec->mux_nids = stac927x_mux_nids;
 	spec->num_muxes = ARRAY_SIZE(stac927x_mux_nids);
+	spec->smux_nids = stac927x_smux_nids;
+	spec->num_smuxes = ARRAY_SIZE(stac927x_smux_nids);
 	spec->dac_list = stac927x_dac_nids;
 	spec->multiout.dac_nids = spec->dac_nids;
 
@@ -4375,6 +4483,8 @@ static int patch_stac9205(struct hda_codec *codec)
 	spec->num_adcs = ARRAY_SIZE(stac9205_adc_nids);
 	spec->mux_nids = stac9205_mux_nids;
 	spec->num_muxes = ARRAY_SIZE(stac9205_mux_nids);
+	spec->smux_nids = stac9205_smux_nids;
+	spec->num_smuxes = ARRAY_SIZE(stac9205_smux_nids);
 	spec->dmic_nids = stac9205_dmic_nids;
 	spec->num_dmics = STAC9205_NUM_DMICS;
 	spec->dmux_nids = stac9205_dmux_nids;