Commit 3d21d3f7 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Support auto-mic switching with IDT/STAC codec 



Support the automatic mic-switching with some devices with IDT/STAC
codecs.  The condition is that the device has only two inputs, one
for an external mic and one for an internal mic.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 62558ce1

sound/pci/hda/patch_sigmatel.c

+154 −16
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ enum { 
	STAC_INSERT_EVENT,

	STAC_PWR_EVENT,

	STAC_HP_EVENT,

	STAC_MIC_EVENT,

};



enum {
@@ -176,6 +177,12 @@ struct sigmatel_jack { 
	struct snd_jack *jack;

};



struct sigmatel_mic_route {

	hda_nid_t pin;

	unsigned char mux_idx;

	unsigned char dmux_idx;

};



struct sigmatel_spec {

	struct snd_kcontrol_new *mixers[4];

	unsigned int num_mixers;
@@ -187,6 +194,7 @@ struct sigmatel_spec { 
	unsigned int hp_detect: 1;

	unsigned int spdif_mute: 1;

	unsigned int check_volume_offset:1;

	unsigned int auto_mic:1;



	/* gpio lines */

	unsigned int eapd_mask;
@@ -243,6 +251,9 @@ struct sigmatel_spec { 
	unsigned long *capsws; /* amp-mute attr: HDA_COMPOSE_AMP_VAL() */

	unsigned int num_caps; /* number of capture volume/switch elements */



	struct sigmatel_mic_route ext_mic;

	struct sigmatel_mic_route int_mic;



	const char **spdif_labels;



	hda_nid_t dig_in_nid;
@@ -1304,7 +1315,7 @@ static int stac92xx_build_controls(struct hda_codec *codec) 
		if (err < 0)

			return err;

	}

	if (spec->num_dmuxes > 0) {

	if (!spec->auto_mic && spec->num_dmuxes > 0) {

		stac_dmux_mixer.count = spec->num_dmuxes;

		err = snd_hda_ctl_add(codec,

				  snd_ctl_new1(&stac_dmux_mixer, codec));
@@ -2950,6 +2961,8 @@ static int stac92xx_add_input_source(struct sigmatel_spec *spec) 
	struct snd_kcontrol_new *knew;

	struct hda_input_mux *imux = &spec->private_imux;



	if (spec->auto_mic)

		return 0; /* no need for input source */

	if (!spec->num_adcs || imux->num_items <= 1)

		return 0; /* no need for input source control */

	knew = stac_control_new(spec, &stac_input_src_temp,
@@ -3557,14 +3570,26 @@ static const char *stac92xx_dmic_labels[5] = { 
	"Digital Mic 3", "Digital Mic 4"

};



static int get_connection_index(struct hda_codec *codec, hda_nid_t mux,

				hda_nid_t nid)

{

	hda_nid_t conn[HDA_MAX_NUM_INPUTS];

	int i, nums;



	nums = snd_hda_get_connections(codec, mux, conn, ARRAY_SIZE(conn));

	for (i = 0; i < nums; i++)

		if (conn[i] == nid)

			return i;

	return -1;

}



/* create playback/capture controls for input pins on dmic capable codecs */

static int stac92xx_auto_create_dmic_input_ctls(struct hda_codec *codec,

						const struct auto_pin_cfg *cfg)

{

	struct sigmatel_spec *spec = codec->spec;

	struct hda_input_mux *dimux = &spec->private_dimux;

	hda_nid_t con_lst[HDA_MAX_NUM_INPUTS];

	int err, i, j;

	int err, i;

	char name[32];



	dimux->items[dimux->num_items].label = stac92xx_dmic_labels[0];
@@ -3574,7 +3599,6 @@ static int stac92xx_auto_create_dmic_input_ctls(struct hda_codec *codec, 
	for (i = 0; i < spec->num_dmics; i++) {

		hda_nid_t nid;

		int index;

		int num_cons;

		unsigned int wcaps;

		unsigned int def_conf;
@@ -3583,17 +3607,10 @@ static int stac92xx_auto_create_dmic_input_ctls(struct hda_codec *codec, 
			continue;



		nid = spec->dmic_nids[i];

		num_cons = snd_hda_get_connections(codec,

				spec->dmux_nids[0],

				con_lst,

				HDA_MAX_NUM_INPUTS);

		for (j = 0; j < num_cons; j++)

			if (con_lst[j] == nid) {

				index = j;

				goto found;

			}

		index = get_connection_index(codec, spec->dmux_nids[0], nid);

		if (index < 0)

			continue;

found:



		wcaps = get_wcaps(codec, nid) &

			(AC_WCAP_OUT_AMP | AC_WCAP_IN_AMP);
@@ -3620,6 +3637,88 @@ static int stac92xx_auto_create_dmic_input_ctls(struct hda_codec *codec, 
	return 0;

}



static int check_mic_pin(struct hda_codec *codec, hda_nid_t nid,

			 hda_nid_t *fixed, hda_nid_t *ext)

{

	unsigned int cfg;



	if (!nid)

		return 0;

	cfg = snd_hda_codec_get_pincfg(codec, nid);

	switch (get_defcfg_connect(cfg)) {

	case AC_JACK_PORT_FIXED:

		if (*fixed)

			return 1; /* already occupied */

		*fixed = nid;

		break;

	case AC_JACK_PORT_COMPLEX:

		if (*ext)

			return 1; /* already occupied */

		*ext = nid;

		break;

	}

	return 0;

}



static int set_mic_route(struct hda_codec *codec,

			 struct sigmatel_mic_route *mic,

			 hda_nid_t pin)

{

	struct sigmatel_spec *spec = codec->spec;

	struct auto_pin_cfg *cfg = &spec->autocfg;

	int i;



	mic->pin = pin;

	for (i = AUTO_PIN_MIC; i <= AUTO_PIN_FRONT_MIC; i++)

		if (pin == cfg->input_pins[i])

			break;

	if (i <= AUTO_PIN_FRONT_MIC) {

		/* analog pin */

		mic->dmux_idx = 0;

		i = get_connection_index(codec, spec->mux_nids[0], pin);

		if (i < 0)

			return -1;

		mic->mux_idx = i;

	}  else {

		/* digital pin */

		mic->mux_idx = 0;

		i = get_connection_index(codec, spec->dmux_nids[0], pin);

		if (i < 0)

			return -1;

		mic->dmux_idx = i;

	}

	return 0;

}



/* return non-zero if the device is for automatic mic switch */

static int stac_check_auto_mic(struct hda_codec *codec)

{

	struct sigmatel_spec *spec = codec->spec;

	struct auto_pin_cfg *cfg = &spec->autocfg;

	hda_nid_t fixed, ext;

	int i;



	for (i = AUTO_PIN_LINE; i < AUTO_PIN_LAST; i++) {

		if (cfg->input_pins[i])

			return 0; /* must be exclusively mics */

	}

	fixed = ext = 0;

	for (i = AUTO_PIN_MIC; i <= AUTO_PIN_FRONT_MIC; i++)

		if (check_mic_pin(codec, cfg->input_pins[i], &fixed, &ext))

			return 0;

	for (i = 0; i < spec->num_dmics; i++)

		if (check_mic_pin(codec, spec->dmic_nids[i], &fixed, &ext))

			return 0;

	if (!fixed || !ext)

		return 0;

	if (!(get_wcaps(codec, ext) & AC_WCAP_UNSOL_CAP))

		return 0; /* no unsol support */

	if (set_mic_route(codec, &spec->ext_mic, ext) ||

	    set_mic_route(codec, &spec->int_mic, fixed))

		return 0; /* something is wrong */

	return 1;

}



/* create playback/capture controls for input pins */

static int stac92xx_auto_create_analog_input_ctls(struct hda_codec *codec, const struct auto_pin_cfg *cfg)

{
@@ -3837,6 +3936,14 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out 
		spec->autocfg.line_outs = 0;

	}



	if (stac_check_auto_mic(codec)) {

		spec->auto_mic = 1;

		/* only one capture for auto-mic */

		spec->num_adcs = 1;

		spec->num_caps = 1;

		spec->num_muxes = 1;

	}



	for (i = 0; i < spec->num_caps; i++) {

		err = stac92xx_add_capvol_ctls(codec, spec->capvols[i],

					       spec->capsws[i], i);
@@ -4264,6 +4371,10 @@ static int stac92xx_init(struct hda_codec *codec) 
		for (i = 0; i < cfg->hp_outs; i++)

			stac_toggle_power_map(codec, cfg->hp_pins[i], 1);

	}

	if (spec->auto_mic) {

		if (enable_pin_detect(codec, spec->ext_mic.pin, STAC_MIC_EVENT))

			stac_issue_unsol_event(codec, spec->ext_mic.pin);

	}

	for (i = 0; i < AUTO_PIN_LAST; i++) {

		hda_nid_t nid = cfg->input_pins[i];

		if (nid) {
@@ -4601,6 +4712,25 @@ static void stac92xx_report_jack(struct hda_codec *codec, hda_nid_t nid) 
	}

}



static void stac92xx_mic_detect(struct hda_codec *codec)

{

	struct sigmatel_spec *spec = codec->spec;

	struct sigmatel_mic_route *mic;



	if (get_pin_presence(codec, spec->ext_mic.pin))

		mic = &spec->ext_mic;

	else

		mic = &spec->int_mic;

	if (mic->dmux_idx)

		snd_hda_codec_write_cache(codec, spec->dmux_nids[0], 0,

					  AC_VERB_SET_CONNECT_SEL,

					  mic->dmux_idx);

	else

		snd_hda_codec_write_cache(codec, spec->mux_nids[0], 0,

					  AC_VERB_SET_CONNECT_SEL,

					  mic->mux_idx);

}



static void stac_issue_unsol_event(struct hda_codec *codec, hda_nid_t nid)

{

	struct sigmatel_event *event = stac_get_event(codec, nid);
@@ -4623,7 +4753,15 @@ static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res) 
	switch (event->type) {

	case STAC_HP_EVENT:

		stac92xx_hp_detect(codec);

		/* fallthru */

		break;

	case STAC_MIC_EVENT:

		stac92xx_mic_detect(codec);

		break;

	}



	switch (event->type) {

	case STAC_HP_EVENT:

	case STAC_MIC_EVENT:

	case STAC_INSERT_EVENT:

	case STAC_PWR_EVENT:

		if (spec->num_pwrs > 0)