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ALSA: hda - Fix no sound from ALC662 after Windows reboot

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Windows use hidden register to control EAPD.
Linux use verb to control EAPD.
If windows reboot to Linux, it must change the EAPD control to verb
control.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Kailang Yang 2012-06-29 09:35:52 +02:00 committed by Takashi Iwai
parent c47ccb2e80
commit 8663ff75cd
1 changed files with 28 additions and 0 deletions
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28
sound/pci/hda/patch_realtek.c
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@ -6688,6 +6688,31 @@ static const struct alc_model_fixup alc662_fixup_models[] = {
{}
};
static void alc662_fill_coef(struct hda_codec *codec)
{
int val, coef;
coef = alc_get_coef0(codec);
switch (codec->vendor_id) {
case 0x10ec0662:
if ((coef & 0x00f0) == 0x0030) {
val = alc_read_coef_idx(codec, 0x4); /* EAPD Ctrl */
alc_write_coef_idx(codec, 0x4, val & ~(1<<10));
}
break;
case 0x10ec0272:
case 0x10ec0273:
case 0x10ec0663:
case 0x10ec0665:
case 0x10ec0670:
case 0x10ec0671:
case 0x10ec0672:
val = alc_read_coef_idx(codec, 0xd); /* EAPD Ctrl */
alc_write_coef_idx(codec, 0xd, val | (1<<14));
break;
}
}
/*
*/
@ -6707,6 +6732,9 @@ static int patch_alc662(struct hda_codec *codec)
alc_fix_pll_init(codec, 0x20, 0x04, 15);
spec->init_hook = alc662_fill_coef;
alc662_fill_coef(codec);
alc_pick_fixup(codec, alc662_fixup_models,
alc662_fixup_tbl, alc662_fixups);
alc_apply_fixup(codec, ALC_FIXUP_ACT_PRE_PROBE);