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ALSA: hda - Fix jack detection at resume with VT codecs
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VT202x codecs seem requiring some delay after the resume D0 power
transition for making the jack detection working again.  Without the
delay soon after D0, the jack is always detected as unplugged.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=98921
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Takashi Iwai committed May 31, 2015
1 parent 2f80b29 commit 6b6d000
Showing 1 changed file with 10 additions and 0 deletions.
10 changes: 10 additions & 0 deletions sound/pci/hda/patch_via.c
Original file line number Diff line number Diff line change
Expand Up @@ -449,6 +449,15 @@ static int via_suspend(struct hda_codec *codec)

return 0;
}

static int via_resume(struct hda_codec *codec)
{
/* some delay here to make jack detection working (bko#98921) */
msleep(10);
codec->patch_ops.init(codec);
regcache_sync(codec->core.regmap);
return 0;
}
#endif

#ifdef CONFIG_PM
Expand All @@ -475,6 +484,7 @@ static const struct hda_codec_ops via_patch_ops = {
.stream_pm = snd_hda_gen_stream_pm,
#ifdef CONFIG_PM
.suspend = via_suspend,
.resume = via_resume,
.check_power_status = via_check_power_status,
#endif
};
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