[ALSA] ac97 - Fix VIA EPIA sound problem
Fix the bad sound quality on VIA EPIA system using VIA VT1617A
(ALSA bug#2381).
Signed-off-by: Andrey Liakhovets <liakh@dol.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 392f6cc..bdd7f89 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -2799,6 +2799,10 @@
*/
int patch_vt1617a(struct snd_ac97 * ac97)
{
+ /* bring analog power consumption to normal, like WinXP driver
+ * for EPIA SP
+ */
+ snd_ac97_write_cache(ac97, 0x5c, 0x20);
ac97->ext_id |= AC97_EI_SPDIF; /* force the detection of spdif */
ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000;
return 0;