From 1cc9e8f4c45999e6069f41521d9d391eeeccc3b3 Mon Sep 17 00:00:00 2001 From: Charles Date: Mon, 18 Oct 2010 16:22:00 +0800 Subject: [PATCH] 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 Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_sigmatel.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 1a563a2fbbec..7d70f8ca3742 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -5334,6 +5334,9 @@ static int patch_stac92hd83xxx(struct hda_codec *codec) if (spec == NULL) 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->spec = spec; spec->linear_tone_beep = 1; -- 2.20.1