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authorLars-Peter Clausen <lars@metafoo.de>2014-11-08 18:38:07 +0300
committerMark Brown <broonie@kernel.org>2014-11-09 12:06:30 +0300
commit427d204c86e095bb91eb8af381bd90a48376a860 (patch)
treecad99da44af0b758fb5d8055317ac36872179354 /sound/soc/soc-cache.c
parent6cc79294efefde2593eaf72effebc8b1cc71d5ac (diff)
downloadlinux-427d204c86e095bb91eb8af381bd90a48376a860.tar.xz
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>
Diffstat (limited to 'sound/soc/soc-cache.c')
-rw-r--r--sound/soc/soc-cache.c152
1 files changed, 0 insertions, 152 deletions
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 <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);