By doing software reset of wm8962 in pm_resume, all registers which have already been set will be reset to default value without regmap interface be involved, thus driver need to mark cache_dirty flag, to let regcache can be updated by regcache_sync().
Signed-off-by: Jiada Wang jiada_wang@mentor.com --- sound/soc/codecs/wm8962.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c index 293e47a..319ee38 100644 --- a/sound/soc/codecs/wm8962.c +++ b/sound/soc/codecs/wm8962.c @@ -3805,6 +3805,13 @@ static int wm8962_runtime_resume(struct device *dev)
wm8962_reset(wm8962);
+ /* All registers have been reset to default value without calling + * to regmap interface, even if reset fails, some registers + * maybe in intermediate status, so we need to mark regmap + * cache_dirty flag. + */ + regcache_mark_dirty(wm8962->regmap); + /* SYSCLK defaults to on; make sure it is off so we can safely * write to registers if the device is declocked. */