[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>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index ef94c91..92938d2 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -552,11 +552,6 @@
/* set by patch */
struct hda_codec_ops patch_ops;
- /* resume phase - all controls should update even if
- * the values are not changed
- */
- unsigned int in_resume;
-
/* PCM to create, set by patch_ops.build_pcms callback */
unsigned int num_pcms;
struct hda_pcm *pcm_info;
@@ -622,11 +617,16 @@
int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex);
/* cached write */
+#ifdef CONFIG_PM
int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
int direct, unsigned int verb, unsigned int parm);
void snd_hda_sequence_write_cache(struct hda_codec *codec,
const struct hda_verb *seq);
void snd_hda_codec_resume_cache(struct hda_codec *codec);
+#else
+#define snd_hda_codec_write_cache snd_hda_codec_write
+#define snd_hda_sequence_write_cache snd_hda_sequence_write
+#endif
/*
* Mixer