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>

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index f365865..f4f4ebe 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -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;
                }