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authorTakashi Iwai <tiwai@suse.de>2011-08-03 01:48:37 -0400
committerTakashi Iwai <tiwai@suse.de>2011-08-04 09:21:13 -0400
commitadabb3ec8b0bcbd2ca81973d33c3da726b939c7c (patch)
tree9f7780b73244c211d04670e95bdecf8bf810a4a7 /sound/pci/hda/patch_realtek.c
parent9f3b24948f22e4e21e961bd514c2089d24f0938e (diff)
ALSA: hda - Fix digital-mic mono recording on ASUS Eee PC
The digital-mic unit on ASUS Eee PC gives PDM signals instead of the normal stereo PCM, thus you can't record a mono stream from the stereo stream as is; the summed stereo signal results in almost zero level, and you'll hear only soft noise. As a workaround, use ALC269-specific COEF to manipulate the dmic route for mono, like used for ALC271x. This is implemented as a fix-up, thus it works only with model=auto or without REALTEK_QUIRKS Kconfig. Reported-and-tested-by: Pavel Roskin <proski@gnu.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_realtek.c')
-rw-r--r--sound/pci/hda/patch_realtek.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index e125c60fe352..9a1aa09f47fe 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4484,6 +4484,22 @@ static void alc269_fixup_pcm_44k(struct hda_codec *codec,
4484 spec->stream_analog_capture = &alc269_44k_pcm_analog_capture; 4484 spec->stream_analog_capture = &alc269_44k_pcm_analog_capture;
4485} 4485}
4486 4486
4487static void alc269_fixup_stereo_dmic(struct hda_codec *codec,
4488 const struct alc_fixup *fix, int action)
4489{
4490 int coef;
4491
4492 if (action != ALC_FIXUP_ACT_INIT)
4493 return;
4494 /* The digital-mic unit sends PDM (differential signal) instead of
4495 * the standard PCM, thus you can't record a valid mono stream as is.
4496 * Below is a workaround specific to ALC269 to control the dmic
4497 * signal source as mono.
4498 */
4499 coef = alc_read_coef_idx(codec, 0x07);
4500 alc_write_coef_idx(codec, 0x07, coef | 0x80);
4501}
4502
4487enum { 4503enum {
4488 ALC269_FIXUP_SONY_VAIO, 4504 ALC269_FIXUP_SONY_VAIO,
4489 ALC275_FIXUP_SONY_VAIO_GPIO2, 4505 ALC275_FIXUP_SONY_VAIO_GPIO2,
@@ -4494,6 +4510,7 @@ enum {
4494 ALC275_FIXUP_SONY_HWEQ, 4510 ALC275_FIXUP_SONY_HWEQ,
4495 ALC271_FIXUP_DMIC, 4511 ALC271_FIXUP_DMIC,
4496 ALC269_FIXUP_PCM_44K, 4512 ALC269_FIXUP_PCM_44K,
4513 ALC269_FIXUP_STEREO_DMIC,
4497}; 4514};
4498 4515
4499static const struct alc_fixup alc269_fixups[] = { 4516static const struct alc_fixup alc269_fixups[] = {
@@ -4556,10 +4573,19 @@ static const struct alc_fixup alc269_fixups[] = {
4556 .type = ALC_FIXUP_FUNC, 4573 .type = ALC_FIXUP_FUNC,
4557 .v.func = alc269_fixup_pcm_44k, 4574 .v.func = alc269_fixup_pcm_44k,
4558 }, 4575 },
4576 [ALC269_FIXUP_STEREO_DMIC] = {
4577 .type = ALC_FIXUP_FUNC,
4578 .v.func = alc269_fixup_stereo_dmic,
4579 },
4559}; 4580};
4560 4581
4561static const struct snd_pci_quirk alc269_fixup_tbl[] = { 4582static const struct snd_pci_quirk alc269_fixup_tbl[] = {
4562 SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW), 4583 SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW),
4584 SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC),
4585 SND_PCI_QUIRK(0x1043, 0x831a, "ASUS P901", ALC269_FIXUP_STEREO_DMIC),
4586 SND_PCI_QUIRK(0x1043, 0x834a, "ASUS S101", ALC269_FIXUP_STEREO_DMIC),
4587 SND_PCI_QUIRK(0x1043, 0x8398, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),
4588 SND_PCI_QUIRK(0x1043, 0x83ce, "ASUS P1005", ALC269_FIXUP_STEREO_DMIC),
4563 SND_PCI_QUIRK(0x104d, 0x9073, "Sony VAIO", ALC275_FIXUP_SONY_VAIO_GPIO2), 4589 SND_PCI_QUIRK(0x104d, 0x9073, "Sony VAIO", ALC275_FIXUP_SONY_VAIO_GPIO2),
4564 SND_PCI_QUIRK(0x104d, 0x907b, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ), 4590 SND_PCI_QUIRK(0x104d, 0x907b, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),
4565 SND_PCI_QUIRK(0x104d, 0x9084, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ), 4591 SND_PCI_QUIRK(0x104d, 0x9084, "Sony VAIO", ALC275_FIXUP_SONY_HWEQ),