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>

1 files changed, 3 insertions, 19 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 9560b8e1e85c..951a090cef4a 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -325,7 +325,7 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx,
 		 * first is the real internal mic and the second is HP jack.
 		 */
 		if (spec->cur_mux[adc_idx])
-			val = PIN_VREF80;
+			val = snd_hda_get_default_vref(codec, pin) | PIN_IN;
 		else
 			val = PIN_HP;
 		snd_hda_set_pin_ctl(codec, pin, val);
@@ -379,24 +379,8 @@ static void alc_set_input_pin(struct hda_codec *codec, hda_nid_t nid,
 			      int auto_pin_type)
 {
 	unsigned int val = PIN_IN;
-
-	if (auto_pin_type == AUTO_PIN_MIC) {
-		unsigned int pincap;
-		unsigned int oldval;
-		oldval = snd_hda_codec_read(codec, nid, 0,
-					    AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
-		pincap = snd_hda_query_pin_caps(codec, nid);
-		pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
-		/* if the default pin setup is vref50, we give it priority */
-		if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50)
-			val = PIN_VREF80;
-		else if (pincap & AC_PINCAP_VREF_50)
-			val = PIN_VREF50;
-		else if (pincap & AC_PINCAP_VREF_100)
-			val = PIN_VREF100;
-		else if (pincap & AC_PINCAP_VREF_GRD)
-			val = PIN_VREFGRD;
-	}
+	if (auto_pin_type == AUTO_PIN_MIC)
+		val |= snd_hda_get_default_vref(codec, nid);
 	snd_hda_set_pin_ctl(codec, nid, val);
 }