From 9f458e7fb5b92385d348fb6039ba7211a6d6ba6e Mon Sep 17 00:00:00 2001
From: Andrey Liakhovets <liakh@dol.ru>
Date: Mon, 28 Aug 2006 16:52:41 +0200
Subject: [PATCH] [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>
---
sound/pci/ac97/ac97_patch.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 392f6ccace5d2..bdd7f89234f6f 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -2799,6 +2799,10 @@ int patch_vt1616(struct snd_ac97 * ac97)
*/
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;
--
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