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

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

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2010-10-11 15:16:20 +02:00
parent f46119b734
commit 6a92934d9e
1 changed files with 27 additions and 0 deletions
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27
sound/pci/hda/patch_cirrus.c
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@ -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;
}