ALSA: hda - Record the current power state before suspend/resume calls
authorTakashi Iwai <tiwai@suse.de>
Tue, 29 Jan 2019 13:03:33 +0000 (14:03 +0100)
committerTakashi Iwai <tiwai@suse.de>
Tue, 29 Jan 2019 17:25:48 +0000 (18:25 +0100)
commit98081ca62cbac31fb0f7efaf90b2e7384ce22257
treecdbd6d9fc86dc62037e795b8eb7c7d286398aeee
parent693abe11aa6b27aed6eb8222162f8fb986325cef
ALSA: hda - Record the current power state before suspend/resume calls

Currently we deal with single codec and suspend codec callbacks for
all S3, S4 and runtime PM handling.  But it turned out that we want
distinguish the call patterns sometimes, e.g. for applying some init
sequence only at probing and restoring from hibernate.

This patch slightly modifies the common PM callbacks for HD-audio
codec and stores the currently processed PM event in power_state of
the codec's device.power field, which is currently unused.  The codec
callback can take a look at this event value and judges which purpose
it's being called.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_codec.c