ALSA: hda - Add snd_hda_get_default_vref() helper function
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>
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 778e4b9..48c6d81 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -1057,12 +1057,8 @@
continue;
/* set appropriate pin control and mute first */
ctl = PIN_IN;
- if (cfg->inputs[i].type == AUTO_PIN_MIC) {
- unsigned int caps = snd_hda_query_pin_caps(codec, pin);
- caps >>= AC_PINCAP_VREF_SHIFT;
- if (caps & AC_PINCAP_VREF_80)
- ctl = PIN_VREF80;
- }
+ if (cfg->inputs[i].type == AUTO_PIN_MIC)
+ ctl |= snd_hda_get_default_vref(codec, pin);
snd_hda_set_pin_ctl(codec, pin, ctl);
snd_hda_codec_write(codec, spec->adc_nid[i], 0,
AC_VERB_SET_AMP_GAIN_MUTE,