Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c481fc...
Commit: c481fca3e68155459e9805dc8c303e012ccbee54
Parent: 740eb8358f2bf337fd4ec62abb5b8cca7c652e5a
Author: Matthew Ranostay <mranostay@embeddedalley.com>
AuthorDate: Mon Jan 7 12:18:28 2008 +0100
Committer: Jaroslav Kysela <perex@perex.cz>
CommitDate: Thu Jan 31 17:29:45 2008 +0100
[ALSA] hda: STAC927x VREF fix
Some laptops incorrectly assume the front input jack as a line in
instead of a microphone in. Which in turn disables the voltage
reference, in which non-amplified input is not possible. This patch
enables VREF80 for the input jack.
Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
sound/pci/hda/patch_sigmatel.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index a074155..4e71bba 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -3344,6 +3344,9 @@ static int patch_stac927x(struct hda_codec *codec)
spec->mixer = stac927x_mixer;
break;
case STAC_DELL_BIOS:
+ /* correct the front input jack as a mic */
+ stac92xx_set_config_reg(codec, 0x0e, 0x02a79130);
+ /* fallthru */
case STAC_DELL_3ST:
/* GPIO2 High = Enable EAPD */
spec->gpio_mask = spec->gpio_data = 0x00000004;
-
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