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Commit 43c1b2e9 authored by Takashi Iwai's avatar Takashi Iwai
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ALSA: hda - Add support of dock-mic detection to Conexant auto-parser



In addition to the normal external mic jack, check also the mic jack
on a docking-station as well, and select the input source appropriately.

The similar functionality was already implemented in patch_sigmatel.c.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 52d3cb88
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+59 −39
Original line number Diff line number Diff line
@@ -85,6 +85,8 @@ struct conexant_spec {
	unsigned int line_present;
	unsigned int auto_mic;
	int auto_mic_ext;		/* imux_pins[] index for ext mic */
	int auto_mic_dock;		/* imux_pins[] index for dock mic */
	int auto_mic_int;		/* imux_pins[] index for int mic */
	unsigned int need_dac_fix;
	hda_nid_t slave_dig_outs[2];

@@ -3737,18 +3739,27 @@ static const struct snd_kcontrol_new cx_auto_capture_mixers[] = {
	{}
};

static bool select_automic(struct hda_codec *codec, int idx, bool detect)
{
	struct conexant_spec *spec = codec->spec;
	if (idx < 0)
		return false;
	if (detect && !snd_hda_jack_detect(codec, spec->imux_info[idx].pin))
		return false;
	cx_auto_mux_enum_update(codec, &spec->private_imux, idx);
	return true;
}

/* automatic switch internal and external mic */
static void cx_auto_automic(struct hda_codec *codec)
{
	struct conexant_spec *spec = codec->spec;
	int ext_idx = spec->auto_mic_ext;

	if (!spec->auto_mic)
		return;
	if (snd_hda_jack_detect(codec, spec->imux_info[ext_idx].pin))
		cx_auto_mux_enum_update(codec, &spec->private_imux, ext_idx);
	else
		cx_auto_mux_enum_update(codec, &spec->private_imux, !ext_idx);
	if (!select_automic(codec, spec->auto_mic_ext, true))
		if (!select_automic(codec, spec->auto_mic_dock, true))
			select_automic(codec, spec->auto_mic_int, false);
}

static void cx_auto_unsol_event(struct hda_codec *codec, unsigned int res)
@@ -3768,42 +3779,43 @@ static void cx_auto_unsol_event(struct hda_codec *codec, unsigned int res)
	}
}

/* return true if it's an internal-mic pin */
static int is_int_mic(struct hda_codec *codec, hda_nid_t pin)
{
	unsigned int def_conf = snd_hda_codec_get_pincfg(codec, pin);
	return get_defcfg_device(def_conf) == AC_JACK_MIC_IN &&
		snd_hda_get_input_pin_attr(def_conf) == INPUT_PIN_ATTR_INT;
}

/* return true if it's an external-mic pin */
static int is_ext_mic(struct hda_codec *codec, hda_nid_t pin)
{
	unsigned int def_conf = snd_hda_codec_get_pincfg(codec, pin);
	return get_defcfg_device(def_conf) == AC_JACK_MIC_IN &&
		snd_hda_get_input_pin_attr(def_conf) >= INPUT_PIN_ATTR_NORMAL &&
		is_jack_detectable(codec, pin);
}

/* check whether the pin config is suitable for auto-mic switching;
 * auto-mic is enabled only when one int-mic and one-ext mic exist
 * auto-mic is enabled only when one int-mic and one ext- and/or
 * one dock-mic exist
 */
static void cx_auto_check_auto_mic(struct hda_codec *codec)
{
	struct conexant_spec *spec = codec->spec;
	int pset[INPUT_PIN_ATTR_NORMAL + 1];
	int i;

	if (is_ext_mic(codec, spec->imux_info[0].pin) &&
	    is_int_mic(codec, spec->imux_info[1].pin)) {
		spec->auto_mic = 1;
		spec->auto_mic_ext = 0;
		return;
	for (i = 0; i < INPUT_PIN_ATTR_NORMAL; i++)
		pset[i] = -1;
	for (i = 0; i < spec->private_imux.num_items; i++) {
		hda_nid_t pin = spec->imux_info[i].pin;
		unsigned int def_conf = snd_hda_codec_get_pincfg(codec, pin);
		int attr;
		if (get_defcfg_device(def_conf) != AC_JACK_MIC_IN)
			return; /* no-mic input */
		attr = snd_hda_get_input_pin_attr(def_conf);
		if (attr == INPUT_PIN_ATTR_UNUSED)
			continue;
		if (attr > INPUT_PIN_ATTR_NORMAL)
			attr = INPUT_PIN_ATTR_NORMAL;
		if (attr != INPUT_PIN_ATTR_INT &&
		    !is_jack_detectable(codec, pin))
			continue;
		if (pset[attr] >= 0)
			return; /* already occupied */
		pset[attr] = i;
	}
	if (is_int_mic(codec, spec->imux_info[0].pin) &&
	    is_ext_mic(codec, spec->imux_info[1].pin)) {
	if (pset[INPUT_PIN_ATTR_INT] < 0 ||
	    (pset[INPUT_PIN_ATTR_NORMAL] < 0 && pset[INPUT_PIN_ATTR_DOCK]))
		return; /* no input to switch*/
	spec->auto_mic = 1;
		spec->auto_mic_ext = 1;
		return;
	}
	spec->auto_mic_ext = pset[INPUT_PIN_ATTR_NORMAL];
	spec->auto_mic_dock = pset[INPUT_PIN_ATTR_DOCK];
	spec->auto_mic_int = pset[INPUT_PIN_ATTR_INT];
}

static void cx_auto_parse_input(struct hda_codec *codec)
@@ -3832,7 +3844,7 @@ static void cx_auto_parse_input(struct hda_codec *codec)
			}
		}
	}
	if (imux->num_items == 2 && cfg->num_inputs == 2)
	if (imux->num_items >= 2 && cfg->num_inputs == imux->num_items)
		cx_auto_check_auto_mic(codec);
	if (imux->num_items > 1 && !spec->auto_mic) {
		for (i = 1; i < imux->num_items; i++) {
@@ -4022,10 +4034,18 @@ static void cx_auto_init_input(struct hda_codec *codec)
	}

	if (spec->auto_mic) {
		int ext_idx = spec->auto_mic_ext;
		snd_hda_codec_write(codec, cfg->inputs[ext_idx].pin, 0,
		if (spec->auto_mic_ext >= 0) {
			snd_hda_codec_write(codec,
				cfg->inputs[spec->auto_mic_ext].pin, 0,
				AC_VERB_SET_UNSOLICITED_ENABLE,
				AC_USRSP_EN | CONEXANT_MIC_EVENT);
		}
		if (spec->auto_mic_dock >= 0) {
			snd_hda_codec_write(codec,
				cfg->inputs[spec->auto_mic_dock].pin, 0,
				AC_VERB_SET_UNSOLICITED_ENABLE,
				AC_USRSP_EN | CONEXANT_MIC_EVENT);
		}
		cx_auto_automic(codec);
	} else {
		select_input_connection(codec, spec->imux_info[0].adc,