ALSA: hda - Fix no sound from ALC662 after Windows reboot
authorKailang Yang <kailang@realtek.com>
Fri, 29 Jun 2012 07:35:52 +0000 (09:35 +0200)
committerTakashi Iwai <tiwai@suse.de>
Fri, 29 Jun 2012 07:44:44 +0000 (09:44 +0200)
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>
sound/pci/hda/patch_realtek.c

index 5ccf10a..aa4c25e 100644 (file)
@@ -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);