ALSA: hda: Set Front Mic to input vref 50% for Lenovo 3000 Y410

BugLink: https://bugs.launchpad.net/bugs/479373

The OR has verified with hda-verb that the internal microphone needs
VREF50 set for audible capture.

Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 9 insertions, 1 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 84bc2c7c4421..1554c3a6fd2e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -10686,6 +10686,13 @@ static struct hda_verb alc262_lenovo_3000_unsol_verbs[] = {
         {}
 };
 
+static struct hda_verb alc262_lenovo_3000_init_verbs[] = {
+        /* Front Mic pin: input vref at 50% */
+        {0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF50},
+        {0x19, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
+        {}
+};
+
 static struct hda_input_mux alc262_fujitsu_capture_source = {
         .num_items = 3,
         .items = {
@@ -11728,7 +11735,8 @@ static struct alc_config_preset alc262_presets[] = {
         [ALC262_LENOVO_3000] = {
                 .mixers = { alc262_lenovo_3000_mixer },
                 .init_verbs = { alc262_init_verbs, alc262_EAPD_verbs,
-                                alc262_lenovo_3000_unsol_verbs },
+                                alc262_lenovo_3000_unsol_verbs,
+                                alc262_lenovo_3000_init_verbs },
                 .num_dacs = ARRAY_SIZE(alc262_dac_nids),
                 .dac_nids = alc262_dac_nids,
                 .hp_nid = 0x03,