ALSA: hda - Fix silent output on ASUS A6Rp

The refactoring of Realtek codec driver in 3.2 kernel caused a
regression for ASUS A6Rp laptop; it doesn't give any output.
The reason was that this machine has a secret master mute (or EAPD)
control via NID 0x0f VREF.  Setting VREF50 on this node makes the
sound working again.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42588

Cc: <stable@kernel.org> [v3.2+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index c95c8bd..a234799 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5586,6 +5586,7 @@ static const struct hda_amp_list alc861_loopbacks[] = {
 /* Pin config fixes */
 enum {
        PINFIX_FSC_AMILO_PI1505,
+       PINFIX_ASUS_A6RP,
 };
 
 static const struct alc_fixup alc861_fixups[] = {
@@ -5597,9 +5598,18 @@ static const struct alc_fixup alc861_fixups[] = {
                        { }
                }
        },
+       [PINFIX_ASUS_A6RP] = {
+               .type = ALC_FIXUP_VERBS,
+               .v.verbs = (const struct hda_verb[]) {
+                       /* node 0x0f VREF seems controlling the master output */
+                       { 0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF50 },
+                       { }
+               },
+       },
 };
 
 static const struct snd_pci_quirk alc861_fixup_tbl[] = {
+       SND_PCI_QUIRK(0x1043, 0x1393, "ASUS A6Rp", PINFIX_ASUS_A6RP),
        SND_PCI_QUIRK(0x1734, 0x10c7, "FSC Amilo Pi1505", PINFIX_FSC_AMILO_PI1505),
        {}
 };