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ALSA: hda - Fix line-in on Mac Mini Core2 Duo 

BIOS on Mac Mini Core2 Duo sets both INPUT and OUTPUT pinctl bits to
the line-in jack, and it confuses the driver as if it's a valid input.
This patch adds the check of OUTPUT bit so that the driver fixes the
invalid pin setup.

Tested-by: Tino Keitel <tino.keitel@gmx.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-05-07 16:22:53 +02:00
parent 7315613f87
commit 5dd17cb992
1 changed files with 6 additions and 1 deletions
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7
sound/pci/hda/patch_sigmatel.c
View File

@ -4079,7 +4079,12 @@ static int stac92xx_init(struct hda_codec *codec)
pinctl = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
/* if PINCTL already set then skip */
if (!(pinctl & AC_PINCTL_IN_EN)) {
/* Also, if both INPUT and OUTPUT are set,
* it must be a BIOS bug; need to override, too
*/
if (!(pinctl & AC_PINCTL_IN_EN) ||
(pinctl & AC_PINCTL_OUT_EN)) {
pinctl &= ~AC_PINCTL_OUT_EN;
pinctl |= AC_PINCTL_IN_EN;
stac92xx_auto_set_pinctl(codec, nid,
pinctl);