ALSA: HDA: Enable internal speaker on Dell M101z

BugLink: http://launchpad.net/bugs/640254

In some cases a magic processing coefficient is needed to enable
the internal speaker on Dell M101z. According to Realtek, this
processing coefficient is only present on ALC269vb.

Cc: stable@kernel.org
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index bcbf9160ed81..a1312a6c8af2 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -14453,6 +14453,7 @@ static void alc269_auto_init(struct hda_codec *codec)
 
 enum {
         ALC269_FIXUP_SONY_VAIO,
+        ALC269_FIXUP_DELL_M101Z,
 };
 
 static const struct hda_verb alc269_sony_vaio_fixup_verbs[] = {
@@ -14464,11 +14465,20 @@ static const struct alc_fixup alc269_fixups[] = {
         [ALC269_FIXUP_SONY_VAIO] = {
                 .verbs = alc269_sony_vaio_fixup_verbs
         },
+        [ALC269_FIXUP_DELL_M101Z] = {
+                .verbs = (const struct hda_verb[]) {
+                        /* Enables internal speaker */
+                        {0x20, AC_VERB_SET_COEF_INDEX, 13},
+                        {0x20, AC_VERB_SET_PROC_COEF, 0x4040},
+                        {}
+                }
+        },
 };
 
 static struct snd_pci_quirk alc269_fixup_tbl[] = {
         SND_PCI_QUIRK(0x104d, 0x9071, "Sony VAIO", ALC269_FIXUP_SONY_VAIO),
         SND_PCI_QUIRK(0x104d, 0x9077, "Sony VAIO", ALC269_FIXUP_SONY_VAIO),
+        SND_PCI_QUIRK(0x1028, 0x0470, "Dell M101z", ALC269_FIXUP_DELL_M101Z),
         {}
 };