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ALSA: hda - Fix codec muted after rebooting from Windows 

Windows may leave pin power-down registers set after reboot, and
this resulted in muted output on Linux.  Reset these registers
at initialization properly.

Signed-off-by: Charles Chin <Charles.Chin@idt.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Charles 2010-10-18 16:22:00 +08:00 committed by Takashi Iwai
parent c08d91695b
commit 1cc9e8f4c4
1 changed files with 3 additions and 0 deletions
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3
sound/pci/hda/patch_sigmatel.c
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@ -5334,6 +5334,9 @@ static int patch_stac92hd83xxx(struct hda_codec *codec)
if (spec == NULL) if (spec == NULL)
return -ENOMEM; return -ENOMEM;
/* reset pin power-down; Windows may leave these bits after reboot */
snd_hda_codec_write_cache(codec, codec->afg, 0, 0x7EC, 0);
snd_hda_codec_write_cache(codec, codec->afg, 0, 0x7ED, 0);
codec->no_trigger_sense = 1; codec->no_trigger_sense = 1;
codec->spec = spec; codec->spec = spec;
spec->linear_tone_beep = 1; spec->linear_tone_beep = 1;