ALSA: ac97 - Enable mono-out on ALC203 codec as default

Use pin 37 for mono-out as default on ALC203.

Reported-by: george pee <georgepee@gmail.com>
Tested-by: george pee <georgepee@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

2 files changed, 9 insertions, 1 deletions

diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index f6a7d721649e..171559c19b3d 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -122,7 +122,7 @@ static const struct ac97_codec_id snd_ac97_codec_ids[] = {
 { 0x414c4740, 0xfffffff0, "ALC202",             NULL,           NULL },
 { 0x414c4750, 0xfffffff0, "ALC250",             NULL,           NULL },
 { 0x414c4760, 0xfffffff0, "ALC655",             patch_alc655,   NULL },
-{ 0x414c4770, 0xfffffff0, "ALC203",             NULL,           NULL },
+{ 0x414c4770, 0xfffffff0, "ALC203",             patch_alc203,   NULL },
 { 0x414c4781, 0xffffffff, "ALC658D",            NULL,   NULL }, /* already patched */
 { 0x414c4780, 0xfffffff0, "ALC658",             patch_alc655,   NULL },
 { 0x414c4790, 0xfffffff0, "ALC850",             patch_alc850,   NULL },
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index f4fbc795ee81..bb028f8f9a2e 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -2560,6 +2560,14 @@ static int patch_ad1986(struct snd_ac97 * ac97)
         return 0;
 }
 
+/*
+ * realtek ALC203: use mono-out for pin 37
+ */
+static int patch_alc203(struct snd_ac97 *ac97)
+{
+        snd_ac97_update_bits(ac97, 0x7a, 0x400, 0x400);
+        return 0;
+}
 
 /*
  * realtek ALC65x/850 codecs