From 427d204c86e095bb91eb8af381bd90a48376a860 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 8 Nov 2014 16:38:07 +0100 Subject: 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 Signed-off-by: Mark Brown --- sound/soc/soc-cache.c | 152 -------------------------------------------------- 1 file changed, 152 deletions(-) (limited to 'sound/soc/soc-cache.c') diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 6dab81799b9a..07f43356f963 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -15,56 +15,6 @@ #include #include -#include - -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); -- cgit v1.2.3