[ALSA] AD1888 suspend/resume fix

This patch adds a write to an undocumented register, 0x60 Extended
Codec Register Page in the AD1888 codec. It is neccessary in order
to make suspend/resume work with the AD1888.

Signed-off-by: Jaya Kumar <jayakumar.alsa@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index cc93ee619086..7f197c780816 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1371,6 +1371,13 @@ static void ad18xx_resume(struct snd_ac97 *ac97)
 
         snd_ac97_restore_iec958(ac97);
 }
+
+static void ad1888_resume(struct snd_ac97 *ac97)
+{
+        ad18xx_resume(ac97);
+        snd_ac97_write_cache(ac97, AC97_CODEC_CLASS_REV, 0x8080);
+}
+
 #endif
 
 int patch_ad1819(struct snd_ac97 * ac97)
@@ -1844,7 +1851,7 @@ static struct snd_ac97_build_ops patch_ad1888_build_ops = {
         .build_post_spdif = patch_ad198x_post_spdif,
         .build_specific = patch_ad1888_specific,
 #ifdef CONFIG_PM
-        .resume = ad18xx_resume,
+        .resume = ad1888_resume,
 #endif
         .update_jacks = ad1888_update_jacks,
 };