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authorTakashi Iwai <tiwai@suse.de>2015-03-13 17:56:25 +0300
committerTakashi Iwai <tiwai@suse.de>2015-03-23 15:19:44 +0300
commit40ba66a702b83f46c53456eaaac692fc12f82cb0 (patch)
tree48837efa4d2dd528a6965f813292f6d4a2954778 /include/sound/hdaudio.h
parent33f819400659da9ff9f636b78f33ff4f1f08cbd4 (diff)
downloadlinux-40ba66a702b83f46c53456eaaac692fc12f82cb0.tar.xz
ALSA: hda - Add cache support for COEF read/write
The 16bit COEF read/write is pretty standard for many codecs, and they can be cached in most cases -- more importantly, they need to be restored at resume. For making this easier, add the cache support to regmap. If the codec driver wants to cache the COEF access, set codec->cache_coef flag and issue AC_VERB_GET_PROC_COEF with the coef index in LSB 8 bits. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/hdaudio.h')
-rw-r--r--include/sound/hdaudio.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 702032598bea..95acc337aea5 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -78,6 +78,7 @@ struct hdac_device {
struct snd_array vendor_verbs;
bool lazy_cache:1; /* don't wake up for writes */
bool caps_overwriting:1; /* caps overwrite being in process */
+ bool cache_coef:1; /* cache COEF read/write too */
};
/* device/driver type used for matching */