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ALSA: hda - Add snd_hda_get_default_vref() helper function

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Add a new helper function to guess the default VREF pin control bits
for mic in.  This can be used to set the pin control value safely
matching with the actual pin capabilities.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2012-04-20 13:06:53 +02:00
parent cdd03cedc5
commit 4740860b53
10 changed files with 56 additions and 58 deletions
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7
sound/pci/hda/patch_analog.c
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@@ -3155,6 +3155,7 @@ static void ad1988_auto_init_analog_input(struct hda_codec *codec)
for (i = 0; i < cfg->num_inputs; i++) {
hda_nid_t nid = cfg->inputs[i].pin;
int type = cfg->inputs[i].type;
int val;
switch (nid) {
case 0x15: /* port-C */
snd_hda_codec_write(codec, 0x33, 0, AC_VERB_SET_CONNECT_SEL, 0x0);
@@ -3163,8 +3164,10 @@ static void ad1988_auto_init_analog_input(struct hda_codec *codec)
snd_hda_codec_write(codec, 0x34, 0, AC_VERB_SET_CONNECT_SEL, 0x0);
break;
}
snd_hda_set_pin_ctl(codec, nid,
type == AUTO_PIN_MIC ? PIN_VREF80 : PIN_IN);
val = PIN_IN;
if (type == AUTO_PIN_MIC)
val |= snd_hda_get_default_vref(codec, nid);
snd_hda_set_pin_ctl(codec, nid, val);
if (nid != AD1988_PIN_CD_NID)
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
AMP_OUT_MUTE);