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>

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7ba7130..fadcb35 100644 (file)
--- 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);

diff --git a/include/trace/events/asoc.h b/include/trace/events/asoc.h
index b04ee7e..88cf39d 100644 (file)
--- a/include/trace/events/asoc.h
+++ b/include/trace/events/asoc.h
@@ -288,31 +288,6 @@ TRACE_EVENT(snd_soc_jack_notify,
        TP_printk("jack=%s %x", __get_str(name), (int)__entry->val)
 );
 
-TRACE_EVENT(snd_soc_cache_sync,
-
-       TP_PROTO(struct snd_soc_codec *codec, const char *type,
-                const char *status),
-
-       TP_ARGS(codec, type, status),
-
-       TP_STRUCT__entry(
-               __string(       name,           codec->component.name)
-               __string(       status,         status          )
-               __string(       type,           type            )
-               __field(        int,            id              )
-       ),
-
-       TP_fast_assign(
-               __assign_str(name, codec->component.name);
-               __assign_str(status, status);
-               __assign_str(type, type);
-               __entry->id = codec->component.id;
-       ),
-
-       TP_printk("codec=%s.%d type=%s status=%s", __get_str(name),
-                 (int)__entry->id, __get_str(type), __get_str(status))
-);
-
 #endif /* _TRACE_ASOC_H */
 
 /* This part must be outside protection */

diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 6dab817..07f4335 100644 (file)
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -15,56 +15,6 @@
 #include <linux/export.h>
 #include <linux/slab.h>
 
-#include <trace/events/asoc.h>
-
-static bool snd_soc_set_cache_val(void *base, unsigned int idx,
-                                 unsigned int val, unsigned int word_size)
-{
-       switch (word_size) {
-       case 1: {
-               u8 *cache = base;
-               if (cache[idx] == val)
-                       return true;
-               cache[idx] = val;
-               break;
-       }
-       case 2: {
-               u16 *cache = base;
-               if (cache[idx] == val)
-                       return true;
-               cache[idx] = val;
-               break;
-       }
-       default:
-               WARN(1, "Invalid word_size %d\n", word_size);
-               break;
-       }
-       return false;
-}
-
-static unsigned int snd_soc_get_cache_val(const void *base, unsigned int idx,
-               unsigned int word_size)
-{
-       if (!base)
-               return -1;
-
-       switch (word_size) {
-       case 1: {
-               const u8 *cache = base;
-               return cache[idx];
-       }
-       case 2: {
-               const u16 *cache = base;
-               return cache[idx];
-       }
-       default:
-               WARN(1, "Invalid word_size %d\n", word_size);
-               break;
-       }
-       /* unreachable */
-       return -1;
-}
-
 int snd_soc_cache_init(struct snd_soc_codec *codec)
 {
        const struct snd_soc_codec_driver *codec_drv = codec->driver;
@@ -75,8 +25,6 @@ int snd_soc_cache_init(struct snd_soc_codec *codec)
        if (!reg_size)
                return 0;
 
-       mutex_init(&codec->cache_rw_mutex);
-
        dev_dbg(codec->dev, "ASoC: Initializing cache for %s codec\n",
                                codec->component.name);
 
@@ -103,103 +51,3 @@ int snd_soc_cache_exit(struct snd_soc_codec *codec)
        codec->reg_cache = NULL;
        return 0;
 }
-
-/**
- * snd_soc_cache_read: Fetch the value of a given register from the cache.
- *
- * @codec: CODEC to configure.
- * @reg: The register index.
- * @value: The value to be returned.
- */
-int snd_soc_cache_read(struct snd_soc_codec *codec,
-                      unsigned int reg, unsigned int *value)
-{
-       if (!value)
-               return -EINVAL;
-
-       mutex_lock(&codec->cache_rw_mutex);
-       if (!ZERO_OR_NULL_PTR(codec->reg_cache))
-               *value = snd_soc_get_cache_val(codec->reg_cache, reg,
-                                              codec->driver->reg_word_size);
-       mutex_unlock(&codec->cache_rw_mutex);
-
-       return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_cache_read);
-
-/**
- * snd_soc_cache_write: Set the value of a given register in the cache.
- *
- * @codec: CODEC to configure.
- * @reg: The register index.
- * @value: The new register value.
- */
-int snd_soc_cache_write(struct snd_soc_codec *codec,
-                       unsigned int reg, unsigned int value)
-{
-       mutex_lock(&codec->cache_rw_mutex);
-       if (!ZERO_OR_NULL_PTR(codec->reg_cache))
-               snd_soc_set_cache_val(codec->reg_cache, reg, value,
-                                     codec->driver->reg_word_size);
-       mutex_unlock(&codec->cache_rw_mutex);
-
-       return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_cache_write);
-
-static int snd_soc_flat_cache_sync(struct snd_soc_codec *codec)
-{
-       int i;
-       int ret;
-       const struct snd_soc_codec_driver *codec_drv;
-       unsigned int val;
-
-       codec_drv = codec->driver;
-       for (i = 0; i < codec_drv->reg_cache_size; ++i) {
-               ret = snd_soc_cache_read(codec, i, &val);
-               if (ret)
-                       return ret;
-               if (codec_drv->reg_cache_default)
-                       if (snd_soc_get_cache_val(codec_drv->reg_cache_default,
-                                                 i, codec_drv->reg_word_size) == val)
-                               continue;
-
-               ret = snd_soc_write(codec, i, val);
-               if (ret)
-                       return ret;
-               dev_dbg(codec->dev, "ASoC: Synced register %#x, value = %#x\n",
-                       i, val);
-       }
-       return 0;
-}
-
-/**
- * snd_soc_cache_sync: Sync the register cache with the hardware.
- *
- * @codec: CODEC to configure.
- *
- * Any registers that should not be synced should be marked as
- * volatile.  In general drivers can choose not to use the provided
- * syncing functionality if they so require.
- */
-int snd_soc_cache_sync(struct snd_soc_codec *codec)
-{
-       const char *name = "flat";
-       int ret;
-
-       if (codec->component.regmap)
-               return regcache_sync(codec->component.regmap);
-
-       if (!codec->cache_sync)
-               return 0;
-
-       dev_dbg(codec->dev, "ASoC: Syncing cache for %s codec\n",
-               codec->component.name);
-       trace_snd_soc_cache_sync(codec, name, "start");
-       ret = snd_soc_flat_cache_sync(codec);
-       if (!ret)
-               codec->cache_sync = 0;
-       trace_snd_soc_cache_sync(codec, name, "end");
-       return ret;
-}
-EXPORT_SYMBOL_GPL(snd_soc_cache_sync);

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 4c8f8a2..4e0e32b 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -309,9 +309,6 @@ static void soc_init_codec_debugfs(struct snd_soc_component *component)
 {
        struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
 
-       debugfs_create_bool("cache_sync", 0444, codec->component.debugfs_root,
-                           &codec->cache_sync);
-
        codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
                                                 codec->component.debugfs_root,
                                                 codec, &codec_reg_fops);
@@ -656,7 +653,6 @@ int snd_soc_suspend(struct device *dev)
                                if (codec->driver->suspend)
                                        codec->driver->suspend(codec);
                                codec->suspended = 1;
-                               codec->cache_sync = 1;
                                if (codec->component.regmap)
                                        regcache_mark_dirty(codec->component.regmap);
                                /* deactivate pins to sleep state */