Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

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
Loading
Loading
Loading
Loading
+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)