ASoC: Remove snd_soc_cache_sync() implementation

This function has no more non regmap user, which means we can remove the
implementation of the function and associated functions and structure
fields.

For convenience we keep a static inline version of the function that
forwards calls to regcache_sync() unconditionally.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 12 insertions, 7 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7ba7130037a0..fadcb351f3e1 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -409,13 +409,9 @@ int devm_snd_soc_register_component(struct device *dev,
                          const struct snd_soc_component_driver *cmpnt_drv,
                          struct snd_soc_dai_driver *dai_drv, int num_dai);
 void snd_soc_unregister_component(struct device *dev);
-int snd_soc_cache_sync(struct snd_soc_codec *codec);
 int snd_soc_cache_init(struct snd_soc_codec *codec);
 int snd_soc_cache_exit(struct snd_soc_codec *codec);
-int snd_soc_cache_write(struct snd_soc_codec *codec,
-                        unsigned int reg, unsigned int value);
-int snd_soc_cache_read(struct snd_soc_codec *codec,
-                       unsigned int reg, unsigned int *value);
+
 int snd_soc_platform_read(struct snd_soc_platform *platform,
                                         unsigned int reg);
 int snd_soc_platform_write(struct snd_soc_platform *platform,
@@ -791,13 +787,11 @@ struct snd_soc_codec {
         unsigned int ac97_registered:1; /* Codec has been AC97 registered */
         unsigned int ac97_created:1; /* Codec has been created by SoC */
         unsigned int cache_init:1; /* codec cache has been initialized */
-        u32 cache_sync; /* Cache needs to be synced to hardware */
 
         /* codec IO */
         void *control_data; /* codec control (i2c/3wire) data */
         hw_write_t hw_write;
         void *reg_cache;
-        struct mutex cache_rw_mutex;
 
         /* component */
         struct snd_soc_component component;
@@ -1264,6 +1258,17 @@ unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
 int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg,
         unsigned int val);
 
+/**
+ * snd_soc_cache_sync() - Sync the register cache with the hardware
+ * @codec: CODEC to sync
+ *
+ * Note: This function will call regcache_sync()
+ */
+static inline int snd_soc_cache_sync(struct snd_soc_codec *codec)
+{
+        return regcache_sync(codec->component.regmap);
+}
+
 /* component IO */
 int snd_soc_component_read(struct snd_soc_component *component,
         unsigned int reg, unsigned int *val);