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_via.c b/sound/pci/hda/patch_via.c
index 8ee531a..92e1167 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -661,10 +661,11 @@
hda_nid_t nid = cfg->inputs[i].pin;
if (spec->smart51_enabled && is_smart51_pins(codec, nid))
ctl = PIN_OUT;
- else if (cfg->inputs[i].type == AUTO_PIN_MIC)
- ctl = PIN_VREF50;
- else
+ else {
ctl = PIN_IN;
+ if (cfg->inputs[i].type == AUTO_PIN_MIC)
+ ctl |= snd_hda_get_default_vref(codec, nid);
+ }
snd_hda_set_pin_ctl(codec, nid, ctl);
}