[ALSA] hda-codec - optimize resume using caches

So far, the driver looked the table of snd_kcontrol_new used for creating
mixer elements and forces to call each of its put callbacks in PM resume
code.  This is too ugly and hackish.
Now, the resume is simplified using the codec amp and command register
caches.  The driver simply restores the values that have been written
in the cache table.  With this simplification, most codec support codes
don't require any special resume callback.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 2 insertions, 9 deletions

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 51208974c2da..8dec32cfdf54 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -84,7 +84,9 @@ int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
                            int direction, int index);
 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
                              int direction, int idx, int mask, int val);
+#ifdef CONFIG_PM
 void snd_hda_codec_resume_amp(struct hda_codec *codec);
+#endif
 
 /* mono switch binding multiple inputs */
 #define HDA_BIND_MUTE_MONO(xname, nid, channel, indices, direction) \
@@ -257,15 +259,6 @@ int snd_hda_add_new_ctls(struct hda_codec *codec,
                          struct snd_kcontrol_new *knew);
 
 /*
- * power management
- */
-#ifdef CONFIG_PM
-int snd_hda_resume_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew);
-int snd_hda_resume_spdif_out(struct hda_codec *codec);
-int snd_hda_resume_spdif_in(struct hda_codec *codec);
-#endif
-
-/*
  * unsolicited event handler
  */