ALSA: hda - Fixup inverted internal mic for Lenovo E50-80

commit 56f27013482c0803d978b667fe85de04ce9357cd upstream.

Inform userspace that one channel of the internal mic has reversed
polarity, so it does not attempt to add both channels together and
end up with silence.

Reported-by: Andrzej Mendel <andrzej.mendel@gmail.com>
Alsa-info: http://www.alsa-project.org/db/?f=3088f82a0cf977855f92af9db8ad406c04f71efa
BugLink: https://bugs.launchpad.net/bugs/1529624
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 40acfc9f07998f6e0acd573ab1c809bd82e54b58..b8906960f5a901997e7f7150dbf90b9a712c979f 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4676,6 +4676,7 @@ enum {
        ALC290_FIXUP_SUBWOOFER,
        ALC290_FIXUP_SUBWOOFER_HSJACK,
        ALC269_FIXUP_THINKPAD_ACPI,
+       ALC269_FIXUP_DMIC_THINKPAD_ACPI,
        ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
        ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,
        ALC255_FIXUP_HEADSET_MODE,
@@ -5113,6 +5114,12 @@ static const struct hda_fixup alc269_fixups[] = {
                .type = HDA_FIXUP_FUNC,
                .v.func = hda_fixup_thinkpad_acpi,
        },
+       [ALC269_FIXUP_DMIC_THINKPAD_ACPI] = {
+               .type = HDA_FIXUP_FUNC,
+               .v.func = alc_fixup_inv_dmic,
+               .chained = true,
+               .chain_id = ALC269_FIXUP_THINKPAD_ACPI,
+       },
        [ALC255_FIXUP_DELL1_MIC_NO_PRESENCE] = {
                .type = HDA_FIXUP_PINS,
                .v.pins = (const struct hda_pintbl[]) {
@@ -5467,6 +5474,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
        SND_PCI_QUIRK(0x17aa, 0x2226, "ThinkPad X250", ALC292_FIXUP_TPT440_DOCK),
        SND_PCI_QUIRK(0x17aa, 0x2233, "Thinkpad", ALC293_FIXUP_LENOVO_SPK_NOISE),
        SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
+       SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
        SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
        SND_PCI_QUIRK(0x17aa, 0x3978, "IdeaPad Y410P", ALC269_FIXUP_NO_SHUTUP),
        SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),