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>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 1a563a2..7d70f8c 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -5334,6 +5334,9 @@
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;