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| author | Charles <charles@Test-PC.(none)> | 2010-10-18 16:22:00 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-10-19 11:14:44 +0200 |
| commit | 1cc9e8f4c45999e6069f41521d9d391eeeccc3b3 (patch) | |
| tree | 6dba3d6be7b205c7ab0ad6b764e1976ad95cf8d9 | |
| parent | c08d91695b2a3349254a62b60f03f7971bd90fa0 (diff) | |
| download | lwn-1cc9e8f4c45999e6069f41521d9d391eeeccc3b3.tar.gz lwn-1cc9e8f4c45999e6069f41521d9d391eeeccc3b3.zip | |
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>
| -rw-r--r-- | sound/pci/hda/patch_sigmatel.c | 3 |
1 files changed, 3 insertions, 0 deletions
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; |