From: Charles <charles@Test-PC.(none)>
Date: Mon, 18 Oct 2010 08:22:00 +0000 (+0800)
Subject: ALSA: hda - Fix codec muted after rebooting from Windows
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1cc9e8f4c45999e6069f41521d9d391eeeccc3b3;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

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 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;