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ALSA: hda - Avoid touching mute-VREF pin for IDT codecs 

Some HP laptops use a pin VREF for controlling the mute LED, and such a
pin shouldn't be powered off.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-11-29 13:01:30 +01:00
parent ae7cc709f2
commit 542c9a0a2f
1 changed files with 3 additions and 1 deletions
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4
sound/pci/hda/patch_sigmatel.c
View File

@ -4441,7 +4441,9 @@ static int stac92xx_init(struct hda_codec *codec)
int pinctl, def_conf;
/* power on when no jack detection is available */
if (!spec->hp_detect) {
/* or when the VREF is used for controlling LED */
if (!spec->hp_detect ||
(spec->gpio_led > 8 && spec->gpio_led == nid)) {
stac_toggle_power_map(codec, nid, 1);
continue;
}