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_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 21de62b..884f8ad 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2503,22 +2503,6 @@
return 0;
}
-static unsigned int stac92xx_get_default_vref(struct hda_codec *codec,
- hda_nid_t nid)
-{
- unsigned int pincap = snd_hda_query_pin_caps(codec, nid);
- pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
- if (pincap & AC_PINCAP_VREF_100)
- return AC_PINCTL_VREF_100;
- if (pincap & AC_PINCAP_VREF_80)
- return AC_PINCTL_VREF_80;
- if (pincap & AC_PINCAP_VREF_50)
- return AC_PINCTL_VREF_50;
- if (pincap & AC_PINCAP_VREF_GRD)
- return AC_PINCTL_VREF_GRD;
- return 0;
-}
-
static void stac92xx_auto_set_pinctl(struct hda_codec *codec, hda_nid_t nid, int pin_type)
{
@@ -2591,7 +2575,7 @@
hda_nid_t nid = kcontrol->private_value;
unsigned int vref = stac92xx_vref_get(codec, nid);
- if (vref == stac92xx_get_default_vref(codec, nid))
+ if (vref == snd_hda_get_default_vref(codec, nid))
ucontrol->value.enumerated.item[0] = 0;
else if (vref == AC_PINCTL_VREF_GRD)
ucontrol->value.enumerated.item[0] = 1;
@@ -2610,7 +2594,7 @@
hda_nid_t nid = kcontrol->private_value;
if (ucontrol->value.enumerated.item[0] == 0)
- new_vref = stac92xx_get_default_vref(codec, nid);
+ new_vref = snd_hda_get_default_vref(codec, nid);
else if (ucontrol->value.enumerated.item[0] == 1)
new_vref = AC_PINCTL_VREF_GRD;
else if (ucontrol->value.enumerated.item[0] == 2)
@@ -2676,7 +2660,7 @@
else {
unsigned int pinctl = AC_PINCTL_IN_EN;
if (io_idx) /* set VREF for mic */
- pinctl |= stac92xx_get_default_vref(codec, nid);
+ pinctl |= snd_hda_get_default_vref(codec, nid);
stac92xx_auto_set_pinctl(codec, nid, pinctl);
}
@@ -2844,7 +2828,7 @@
char name[22];
if (snd_hda_get_input_pin_attr(def_conf) != INPUT_PIN_ATTR_INT) {
- if (stac92xx_get_default_vref(codec, nid) == AC_PINCTL_VREF_GRD
+ if (snd_hda_get_default_vref(codec, nid) == AC_PINCTL_VREF_GRD
&& nid == spec->line_switch)
control = STAC_CTL_WIDGET_IO_SWITCH;
else if (snd_hda_query_pin_caps(codec, nid)
@@ -4351,7 +4335,7 @@
unsigned int pinctl, conf;
if (type == AUTO_PIN_MIC) {
/* for mic pins, force to initialize */
- pinctl = stac92xx_get_default_vref(codec, nid);
+ pinctl = snd_hda_get_default_vref(codec, nid);
pinctl |= AC_PINCTL_IN_EN;
stac92xx_auto_set_pinctl(codec, nid, pinctl);
} else {