ALSA: HDA: Fix internal mic on Dell E5420/E5520

This is a fixup for the 2.6.38 kernel, as the issue is being resolved
by upstream commits 699d899560cd7e72da39231e584412e7ac8114a4 and
094a42452abd5564429045e210281c6d22e67fca - which are too invasive
to reach 2.6.38. Instead make pin fixes as a workaround.

BugLink: http://bugs.launchpad.net/bugs/740055
Tested-by: Kent Baxley <kent.baxley@canonical.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 052062d..8566119 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -94,6 +94,7 @@ enum {
        STAC_92HD83XXX_REF,
        STAC_92HD83XXX_PWR_REF,
        STAC_DELL_S14,
+       STAC_DELL_E5520M,
        STAC_92HD83XXX_HP,
        STAC_HP_DV7_4000,
        STAC_92HD83XXX_MODELS
@@ -1657,6 +1658,13 @@ static unsigned int dell_s14_pin_configs[10] = {
        0x40f000f0, 0x40f000f0,
 };
 
+/* Switch int mic from 0x20 to 0x11 */
+static unsigned int dell_e5520m_pin_configs[10] = {
+       0x04a11020, 0x0421101f, 0x400000f0, 0x90170110,
+       0x23011050, 0x23a1102e, 0x400000f3, 0xd5a30130,
+       0x400000f0, 0x40f000f0,
+};
+
 static unsigned int hp_dv7_4000_pin_configs[10] = {
        0x03a12050, 0x0321201f, 0x40f000f0, 0x90170110,
        0x40f000f0, 0x40f000f0, 0x90170110, 0xd5a30140,
@@ -1667,6 +1675,7 @@ static unsigned int *stac92hd83xxx_brd_tbl[STAC_92HD83XXX_MODELS] = {
        [STAC_92HD83XXX_REF] = ref92hd83xxx_pin_configs,
        [STAC_92HD83XXX_PWR_REF] = ref92hd83xxx_pin_configs,
        [STAC_DELL_S14] = dell_s14_pin_configs,
+       [STAC_DELL_E5520M] = dell_e5520m_pin_configs,
        [STAC_HP_DV7_4000] = hp_dv7_4000_pin_configs,
 };
 
@@ -1675,6 +1684,7 @@ static const char * const stac92hd83xxx_models[STAC_92HD83XXX_MODELS] = {
        [STAC_92HD83XXX_REF] = "ref",
        [STAC_92HD83XXX_PWR_REF] = "mic-ref",
        [STAC_DELL_S14] = "dell-s14",
+       [STAC_DELL_E5520M] = "dell-e5520m",
        [STAC_92HD83XXX_HP] = "hp",
        [STAC_HP_DV7_4000] = "hp-dv7-4000",
 };
@@ -1687,6 +1697,14 @@ static struct snd_pci_quirk stac92hd83xxx_cfg_tbl[] = {
                      "DFI LanParty", STAC_92HD83XXX_REF),
        SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02ba,
                      "unknown Dell", STAC_DELL_S14),
+       SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x049a,
+                     "Dell E5520", STAC_DELL_E5520M),
+       SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x049b,
+                     "Dell E5420", STAC_DELL_E5520M),
+       SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x04eb,
+                     "Dell E5420m", STAC_DELL_E5520M),
+       SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x04ec,
+                     "Dell E5520m", STAC_DELL_E5520M),
        SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_HP, 0xff00, 0x3600,
                      "HP", STAC_92HD83XXX_HP),
        {} /* terminator */