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ASoC: soc-cache: Introduce the cache_bypass option

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This is primarily needed to avoid writing back to the cache
whenever we are syncing the cache with the hardware.  This gives a
performance benefit especially for large register maps.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos
2011-01-19 14:53:36 +00:00
committed by Mark Brown
parent e66ef2f81f
commit dad8e7aeeb
2 changed files with 25 additions and 12 deletions
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include/sound/soc.h
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@@ -488,6 +488,7 @@ struct snd_soc_codec {
/* runtime */
struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
unsigned int active;
unsigned int cache_bypass:1; /* Suppress access to the cache */
unsigned int cache_only:1; /* Suppress writes to hardware */
unsigned int cache_sync:1; /* Cache needs to be synced to hardware */
unsigned int suspended:1; /* Codec is in suspend PM state */