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ALSA: hda - Add cache support for COEF read/write
authorTakashi Iwai <tiwai@suse.de>
Fri, 13 Mar 2015 14:56:25 +0000 (15:56 +0100)
committerTakashi Iwai <tiwai@suse.de>
Mon, 23 Mar 2015 12:19:44 +0000 (13:19 +0100)
commit40ba66a702b83f46c53456eaaac692fc12f82cb0
tree48837efa4d2dd528a6965f813292f6d4a2954778tree | snapshot
parent33f819400659da9ff9f636b78f33ff4f1f08cbd4commit | diff
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>
include/sound/hdaudio.h diff | blob | history
sound/hda/hdac_regmap.c diff | blob | history
Domain: System / Kernel;