[ALSA] ac97 - Fix VIA EPIA sound problem
authorAndrey Liakhovets <liakh@dol.ru>
Mon, 28 Aug 2006 14:52:41 +0000 (16:52 +0200)
committerJaroslav Kysela <perex@suse.cz>
Sat, 23 Sep 2006 08:44:53 +0000 (10:44 +0200)
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

index 392f6ccace5d2e172515cb64f60379d181eb2dc2..bdd7f89234f6f0725af495d5fb2df96b7222291f 100644 (file)
@@ -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;