Commit 6a92934d authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add input volume control for each mic/line-in pin 



The input pins on cirrus codecs have also input amps.  Let's make
control elemetns for them.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f46119b7

sound/pci/hda/patch_cirrus.c

+27 −0
Original line number Diff line number Diff line
@@ -742,6 +742,27 @@ static struct hda_bind_ctls *make_bind_capture(struct hda_codec *codec, 
	return bind;

}



/* add a (input-boost) volume control to the given input pin */

static int add_input_volume_control(struct hda_codec *codec,

				    struct auto_pin_cfg *cfg,

				    int item)

{

	hda_nid_t pin = cfg->inputs[item].pin;

	u32 caps;

	const char *label;

	struct snd_kcontrol *kctl;

		

	if (!(get_wcaps(codec, pin) & AC_WCAP_IN_AMP))

		return 0;

	caps = query_amp_caps(codec, pin, HDA_INPUT);

	caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;

	if (caps <= 1)

		return 0;

	label = hda_get_autocfg_input_label(codec, cfg, item);

	return add_volume(codec, label, 0,

			  HDA_COMPOSE_AMP_VAL(pin, 3, 0, HDA_INPUT), 1, &kctl);

}



static int build_input(struct hda_codec *codec)

{

	struct cs_spec *spec = codec->spec;
@@ -781,6 +802,12 @@ static int build_input(struct hda_codec *codec) 
			return err;

	}



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

		err = add_input_volume_control(codec, &spec->autocfg, i);

		if (err < 0)

			return err;

	}



	return 0;

}