[PATCH] snd-hda-intel: enable microphone for alc272 (realtek)

[Andres Salomon]

Please include this in the ubuntu-hardy-lum tree (the netbook-lpia branch).
It enables the mic (and boosts the input volume) for the ALC272 codec on
buffalo machines.  At some point, we'll need proper ALC272 support rather
than per-machine quirks, but for now we'll use the quirks.

LP #347811

Signed-off-by: Andres Salomon <dilinger at canonical.com>    
Signed-off-by: Tony Espy <espy at canonical.com>

diff --git a/ubuntu/sound/alsa-kernel/pci/hda/patch_realtek.c b/ubuntu/sound/alsa-kernel/pci/hda/patch_realtek.c
index 6ffd3b6..457d755 100644
--- a/ubuntu/sound/alsa-kernel/pci/hda/patch_realtek.c
+++ b/ubuntu/sound/alsa-kernel/pci/hda/patch_realtek.c
@@ -13734,6 +13734,11 @@ static struct hda_verb alc272_dell_init_verbs[] = {
 	{}
 };
 
+static struct snd_kcontrol_new alc272_toshiba_mixer[] = {
+	HDA_CODEC_VOLUME("Front Mic Boost", 0x19, 0, HDA_INPUT),
+	{ } /* end */
+};
+
 static struct hda_verb alc272_toshiba_init_verbs[] = {
 	/* Front Pin: output 0 (0x0c) */
 	{0x17, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT}, /* 0x14 */
@@ -13746,6 +13751,8 @@ static struct hda_verb alc272_toshiba_init_verbs[] = {
 	{0x17, AC_VERB_SET_EAPD_BTLENABLE, 2}, /* 0x14 */
 
 	{0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN}, /* originally 0x12 */
+	{0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
+
 	{0x13, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
 	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
 	{0x16, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
@@ -14106,7 +14113,7 @@ static struct alc_config_preset alc662_presets[] = {
 		.init_hook = alc663_m51va_inithook,
 	},
 	[ALC272_TOSHIBA_KAVA] = {
-		.mixers = { alc663_m51va_mixer },
+		.mixers = { alc663_m51va_mixer, alc272_toshiba_mixer },
 		.init_verbs = { alc662_init_verbs, alc272_toshiba_init_verbs },
 		.num_dacs = ARRAY_SIZE(alc662_dac_nids),
 		.dac_nids = alc662_dac_nids,