* option) any later version.
*/
-#include <linux/i2c.h>
-#include <linux/spi/spi.h>
#include <sound/soc.h>
-#include <linux/bitmap.h>
-#include <linux/rbtree.h>
#include <linux/export.h>
+#include <linux/slab.h>
#include <trace/events/asoc.h>
return -1;
}
-static int snd_soc_flat_cache_sync(struct snd_soc_codec *codec)
+int snd_soc_cache_init(struct snd_soc_codec *codec)
{
- int i;
- int ret;
- const struct snd_soc_codec_driver *codec_drv;
- unsigned int val;
+ const struct snd_soc_codec_driver *codec_drv = codec->driver;
+ size_t reg_size;
- 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->reg_def_copy)
- if (snd_soc_get_cache_val(codec->reg_def_copy,
- i, codec_drv->reg_word_size) == val)
- continue;
+ reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
- WARN_ON(!snd_soc_codec_writable_register(codec, i));
-
- 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;
-}
-
-static int snd_soc_flat_cache_write(struct snd_soc_codec *codec,
- unsigned int reg, unsigned int value)
-{
- snd_soc_set_cache_val(codec->reg_cache, reg, value,
- codec->driver->reg_word_size);
- return 0;
-}
-
-static int snd_soc_flat_cache_read(struct snd_soc_codec *codec,
- unsigned int reg, unsigned int *value)
-{
- *value = snd_soc_get_cache_val(codec->reg_cache, reg,
- codec->driver->reg_word_size);
- return 0;
-}
+ mutex_init(&codec->cache_rw_mutex);
-static int snd_soc_flat_cache_exit(struct snd_soc_codec *codec)
-{
- if (!codec->reg_cache)
- return 0;
- kfree(codec->reg_cache);
- codec->reg_cache = NULL;
- return 0;
-}
+ dev_dbg(codec->dev, "ASoC: Initializing cache for %s codec\n",
+ codec->name);
-static int snd_soc_flat_cache_init(struct snd_soc_codec *codec)
-{
- if (codec->reg_def_copy)
- codec->reg_cache = kmemdup(codec->reg_def_copy,
- codec->reg_size, GFP_KERNEL);
+ if (codec_drv->reg_cache_default)
+ codec->reg_cache = kmemdup(codec_drv->reg_cache_default,
+ reg_size, GFP_KERNEL);
else
- codec->reg_cache = kzalloc(codec->reg_size, GFP_KERNEL);
+ codec->reg_cache = kzalloc(reg_size, GFP_KERNEL);
if (!codec->reg_cache)
return -ENOMEM;
return 0;
}
-/* an array of all supported compression types */
-static const struct snd_soc_cache_ops cache_types[] = {
- /* Flat *must* be the first entry for fallback */
- {
- .id = SND_SOC_FLAT_COMPRESSION,
- .name = "flat",
- .init = snd_soc_flat_cache_init,
- .exit = snd_soc_flat_cache_exit,
- .read = snd_soc_flat_cache_read,
- .write = snd_soc_flat_cache_write,
- .sync = snd_soc_flat_cache_sync
- },
-};
-
-int snd_soc_cache_init(struct snd_soc_codec *codec)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(cache_types); ++i)
- if (cache_types[i].id == codec->compress_type)
- break;
-
- /* Fall back to flat compression */
- if (i == ARRAY_SIZE(cache_types)) {
- dev_warn(codec->dev, "ASoC: Could not match compress type: %d\n",
- codec->compress_type);
- i = 0;
- }
-
- mutex_init(&codec->cache_rw_mutex);
- codec->cache_ops = &cache_types[i];
-
- if (codec->cache_ops->init) {
- if (codec->cache_ops->name)
- dev_dbg(codec->dev, "ASoC: Initializing %s cache for %s codec\n",
- codec->cache_ops->name, codec->name);
- return codec->cache_ops->init(codec);
- }
- return -ENOSYS;
-}
-
/*
* NOTE: keep in mind that this function might be called
* multiple times.
*/
int snd_soc_cache_exit(struct snd_soc_codec *codec)
{
- if (codec->cache_ops && codec->cache_ops->exit) {
- if (codec->cache_ops->name)
- dev_dbg(codec->dev, "ASoC: Destroying %s cache for %s codec\n",
- codec->cache_ops->name, codec->name);
- return codec->cache_ops->exit(codec);
- }
- return -ENOSYS;
+ dev_dbg(codec->dev, "ASoC: Destroying cache for %s codec\n",
+ codec->name);
+ if (!codec->reg_cache)
+ return 0;
+ kfree(codec->reg_cache);
+ codec->reg_cache = NULL;
+ return 0;
}
/**
int snd_soc_cache_read(struct snd_soc_codec *codec,
unsigned int reg, unsigned int *value)
{
- int ret;
+ if (!value)
+ return -EINVAL;
mutex_lock(&codec->cache_rw_mutex);
-
- if (value && codec->cache_ops && codec->cache_ops->read) {
- ret = codec->cache_ops->read(codec, reg, value);
- mutex_unlock(&codec->cache_rw_mutex);
- return ret;
- }
-
+ *value = snd_soc_get_cache_val(codec->reg_cache, reg,
+ codec->driver->reg_word_size);
mutex_unlock(&codec->cache_rw_mutex);
- return -ENOSYS;
+
+ return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_cache_read);
int snd_soc_cache_write(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
+ mutex_lock(&codec->cache_rw_mutex);
+ 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;
- mutex_lock(&codec->cache_rw_mutex);
+ 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;
- if (codec->cache_ops && codec->cache_ops->write) {
- ret = codec->cache_ops->write(codec, reg, value);
- mutex_unlock(&codec->cache_rw_mutex);
- return ret;
- }
+ WARN_ON(!snd_soc_codec_writable_register(codec, i));
- mutex_unlock(&codec->cache_rw_mutex);
- return -ENOSYS;
+ 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;
}
-EXPORT_SYMBOL_GPL(snd_soc_cache_write);
/**
* snd_soc_cache_sync: Sync the register cache with the hardware.
*/
int snd_soc_cache_sync(struct snd_soc_codec *codec)
{
+ const char *name = "flat";
int ret;
- const char *name;
- if (!codec->cache_sync) {
+ if (!codec->cache_sync)
return 0;
- }
-
- if (!codec->cache_ops || !codec->cache_ops->sync)
- return -ENOSYS;
- if (codec->cache_ops->name)
- name = codec->cache_ops->name;
- else
- name = "unknown";
-
- if (codec->cache_ops->name)
- dev_dbg(codec->dev, "ASoC: Syncing %s cache for %s codec\n",
- codec->cache_ops->name, codec->name);
+ dev_dbg(codec->dev, "ASoC: Syncing cache for %s codec\n",
+ codec->name);
trace_snd_soc_cache_sync(codec, name, "start");
- ret = codec->cache_ops->sync(codec);
+ 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);
-
-static int snd_soc_get_reg_access_index(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- const struct snd_soc_codec_driver *codec_drv;
- unsigned int min, max, index;
-
- codec_drv = codec->driver;
- min = 0;
- max = codec_drv->reg_access_size - 1;
- do {
- index = (min + max) / 2;
- if (codec_drv->reg_access_default[index].reg == reg)
- return index;
- if (codec_drv->reg_access_default[index].reg < reg)
- min = index + 1;
- else
- max = index;
- } while (min <= max);
- return -1;
-}
-
-int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- int index;
-
- if (reg >= codec->driver->reg_cache_size)
- return 1;
- index = snd_soc_get_reg_access_index(codec, reg);
- if (index < 0)
- return 0;
- return codec->driver->reg_access_default[index].vol;
-}
-EXPORT_SYMBOL_GPL(snd_soc_default_volatile_register);
-
-int snd_soc_default_readable_register(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- int index;
-
- if (reg >= codec->driver->reg_cache_size)
- return 1;
- index = snd_soc_get_reg_access_index(codec, reg);
- if (index < 0)
- return 0;
- return codec->driver->reg_access_default[index].read;
-}
-EXPORT_SYMBOL_GPL(snd_soc_default_readable_register);
-
-int snd_soc_default_writable_register(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- int index;
-
- if (reg >= codec->driver->reg_cache_size)
- return 1;
- index = snd_soc_get_reg_access_index(codec, reg);
- if (index < 0)
- return 0;
- return codec->driver->reg_access_default[index].write;
-}
-EXPORT_SYMBOL_GPL(snd_soc_default_writable_register);
projects / karo-tx-linux.git / blobdiff