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-rw-r--r--sound/soc/soc-cache.c698
1 files changed, 223 insertions, 475 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 06b7b81a160..d9f8aded51f 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -20,425 +20,6 @@
#include <trace/events/asoc.h>
-#ifdef CONFIG_SPI_MASTER
-static int do_spi_write(void *control, const char *data, int len)
-{
- struct spi_device *spi = control;
- int ret;
-
- ret = spi_write(spi, data, len);
- if (ret < 0)
- return ret;
-
- return len;
-}
-#endif
-
-static int do_hw_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value, const void *data, int len)
-{
- int ret;
-
- if (!snd_soc_codec_volatile_register(codec, reg) &&
- reg < codec->driver->reg_cache_size &&
- !codec->cache_bypass) {
- ret = snd_soc_cache_write(codec, reg, value);
- if (ret < 0)
- return -1;
- }
-
- if (codec->cache_only) {
- codec->cache_sync = 1;
- return 0;
- }
-
- ret = codec->hw_write(codec->control_data, data, len);
- if (ret == len)
- return 0;
- if (ret < 0)
- return ret;
- else
- return -EIO;
-}
-
-static unsigned int do_hw_read(struct snd_soc_codec *codec, unsigned int reg)
-{
- int ret;
- unsigned int val;
-
- if (reg >= codec->driver->reg_cache_size ||
- snd_soc_codec_volatile_register(codec, reg) ||
- codec->cache_bypass) {
- if (codec->cache_only)
- return -1;
-
- BUG_ON(!codec->hw_read);
- return codec->hw_read(codec, reg);
- }
-
- ret = snd_soc_cache_read(codec, reg, &val);
- if (ret < 0)
- return -1;
- return val;
-}
-
-static unsigned int snd_soc_4_12_read(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- return do_hw_read(codec, reg);
-}
-
-static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u16 data;
-
- data = cpu_to_be16((reg << 12) | (value & 0xffffff));
-
- return do_hw_write(codec, reg, value, &data, 2);
-}
-
-static unsigned int snd_soc_7_9_read(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- return do_hw_read(codec, reg);
-}
-
-static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u8 data[2];
-
- data[0] = (reg << 1) | ((value >> 8) & 0x0001);
- data[1] = value & 0x00ff;
-
- return do_hw_write(codec, reg, value, data, 2);
-}
-
-static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u8 data[2];
-
- reg &= 0xff;
- data[0] = reg;
- data[1] = value & 0xff;
-
- return do_hw_write(codec, reg, value, data, 2);
-}
-
-static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- return do_hw_read(codec, reg);
-}
-
-static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u8 data[3];
-
- data[0] = reg;
- data[1] = (value >> 8) & 0xff;
- data[2] = value & 0xff;
-
- return do_hw_write(codec, reg, value, data, 3);
-}
-
-static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- return do_hw_read(codec, reg);
-}
-
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-static unsigned int do_i2c_read(struct snd_soc_codec *codec,
- void *reg, int reglen,
- void *data, int datalen)
-{
- struct i2c_msg xfer[2];
- int ret;
- struct i2c_client *client = codec->control_data;
-
- /* Write register */
- xfer[0].addr = client->addr;
- xfer[0].flags = 0;
- xfer[0].len = reglen;
- xfer[0].buf = reg;
-
- /* Read data */
- xfer[1].addr = client->addr;
- xfer[1].flags = I2C_M_RD;
- xfer[1].len = datalen;
- xfer[1].buf = data;
-
- ret = i2c_transfer(client->adapter, xfer, 2);
- if (ret == 2)
- return 0;
- else if (ret < 0)
- return ret;
- else
- return -EIO;
-}
-#endif
-
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-static unsigned int snd_soc_8_8_read_i2c(struct snd_soc_codec *codec,
- unsigned int r)
-{
- u8 reg = r;
- u8 data;
- int ret;
-
- ret = do_i2c_read(codec, &reg, 1, &data, 1);
- if (ret < 0)
- return 0;
- return data;
-}
-#else
-#define snd_soc_8_8_read_i2c NULL
-#endif
-
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-static unsigned int snd_soc_8_16_read_i2c(struct snd_soc_codec *codec,
- unsigned int r)
-{
- u8 reg = r;
- u16 data;
- int ret;
-
- ret = do_i2c_read(codec, &reg, 1, &data, 2);
- if (ret < 0)
- return 0;
- return (data >> 8) | ((data & 0xff) << 8);
-}
-#else
-#define snd_soc_8_16_read_i2c NULL
-#endif
-
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-static unsigned int snd_soc_16_8_read_i2c(struct snd_soc_codec *codec,
- unsigned int r)
-{
- u16 reg = r;
- u8 data;
- int ret;
-
- ret = do_i2c_read(codec, &reg, 2, &data, 1);
- if (ret < 0)
- return 0;
- return data;
-}
-#else
-#define snd_soc_16_8_read_i2c NULL
-#endif
-
-static unsigned int snd_soc_16_8_read(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- return do_hw_read(codec, reg);
-}
-
-static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u8 data[3];
-
- data[0] = (reg >> 8) & 0xff;
- data[1] = reg & 0xff;
- data[2] = value;
-
- return do_hw_write(codec, reg, value, data, 3);
-}
-
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
-static unsigned int snd_soc_16_16_read_i2c(struct snd_soc_codec *codec,
- unsigned int r)
-{
- u16 reg = cpu_to_be16(r);
- u16 data;
- int ret;
-
- ret = do_i2c_read(codec, &reg, 2, &data, 2);
- if (ret < 0)
- return 0;
- return be16_to_cpu(data);
-}
-#else
-#define snd_soc_16_16_read_i2c NULL
-#endif
-
-static unsigned int snd_soc_16_16_read(struct snd_soc_codec *codec,
- unsigned int reg)
-{
- return do_hw_read(codec, reg);
-}
-
-static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg,
- unsigned int value)
-{
- u8 data[4];
-
- data[0] = (reg >> 8) & 0xff;
- data[1] = reg & 0xff;
- data[2] = (value >> 8) & 0xff;
- data[3] = value & 0xff;
-
- return do_hw_write(codec, reg, value, data, 4);
-}
-
-/* Primitive bulk write support for soc-cache. The data pointed to by
- * `data' needs to already be in the form the hardware expects
- * including any leading register specific data. Any data written
- * through this function will not go through the cache as it only
- * handles writing to volatile or out of bounds registers.
- */
-static int snd_soc_hw_bulk_write_raw(struct snd_soc_codec *codec, unsigned int reg,
- const void *data, size_t len)
-{
- int ret;
-
- /* To ensure that we don't get out of sync with the cache, check
- * whether the base register is volatile or if we've directly asked
- * to bypass the cache. Out of bounds registers are considered
- * volatile.
- */
- if (!codec->cache_bypass
- && !snd_soc_codec_volatile_register(codec, reg)
- && reg < codec->driver->reg_cache_size)
- return -EINVAL;
-
- switch (codec->control_type) {
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
- case SND_SOC_I2C:
- ret = i2c_master_send(codec->control_data, data, len);
- break;
-#endif
-#if defined(CONFIG_SPI_MASTER)
- case SND_SOC_SPI:
- ret = spi_write(codec->control_data, data, len);
- break;
-#endif
- default:
- BUG();
- }
-
- if (ret == len)
- return 0;
- if (ret < 0)
- return ret;
- else
- return -EIO;
-}
-
-static struct {
- int addr_bits;
- int data_bits;
- int (*write)(struct snd_soc_codec *codec, unsigned int, unsigned int);
- unsigned int (*read)(struct snd_soc_codec *, unsigned int);
- unsigned int (*i2c_read)(struct snd_soc_codec *, unsigned int);
-} io_types[] = {
- {
- .addr_bits = 4, .data_bits = 12,
- .write = snd_soc_4_12_write, .read = snd_soc_4_12_read,
- },
- {
- .addr_bits = 7, .data_bits = 9,
- .write = snd_soc_7_9_write, .read = snd_soc_7_9_read,
- },
- {
- .addr_bits = 8, .data_bits = 8,
- .write = snd_soc_8_8_write, .read = snd_soc_8_8_read,
- .i2c_read = snd_soc_8_8_read_i2c,
- },
- {
- .addr_bits = 8, .data_bits = 16,
- .write = snd_soc_8_16_write, .read = snd_soc_8_16_read,
- .i2c_read = snd_soc_8_16_read_i2c,
- },
- {
- .addr_bits = 16, .data_bits = 8,
- .write = snd_soc_16_8_write, .read = snd_soc_16_8_read,
- .i2c_read = snd_soc_16_8_read_i2c,
- },
- {
- .addr_bits = 16, .data_bits = 16,
- .write = snd_soc_16_16_write, .read = snd_soc_16_16_read,
- .i2c_read = snd_soc_16_16_read_i2c,
- },
-};
-
-/**
- * snd_soc_codec_set_cache_io: Set up standard I/O functions.
- *
- * @codec: CODEC to configure.
- * @addr_bits: Number of bits of register address data.
- * @data_bits: Number of bits of data per register.
- * @control: Control bus used.
- *
- * Register formats are frequently shared between many I2C and SPI
- * devices. In order to promote code reuse the ASoC core provides
- * some standard implementations of CODEC read and write operations
- * which can be set up using this function.
- *
- * The caller is responsible for allocating and initialising the
- * actual cache.
- *
- * Note that at present this code cannot be used by CODECs with
- * volatile registers.
- */
-int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
- int addr_bits, int data_bits,
- enum snd_soc_control_type control)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(io_types); i++)
- if (io_types[i].addr_bits == addr_bits &&
- io_types[i].data_bits == data_bits)
- break;
- if (i == ARRAY_SIZE(io_types)) {
- printk(KERN_ERR
- "No I/O functions for %d bit address %d bit data\n",
- addr_bits, data_bits);
- return -EINVAL;
- }
-
- codec->write = io_types[i].write;
- codec->read = io_types[i].read;
- codec->bulk_write_raw = snd_soc_hw_bulk_write_raw;
-
- switch (control) {
- case SND_SOC_CUSTOM:
- break;
-
- case SND_SOC_I2C:
-#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
- codec->hw_write = (hw_write_t)i2c_master_send;
-#endif
- if (io_types[i].i2c_read)
- codec->hw_read = io_types[i].i2c_read;
-
- codec->control_data = container_of(codec->dev,
- struct i2c_client,
- dev);
- break;
-
- case SND_SOC_SPI:
-#ifdef CONFIG_SPI_MASTER
- codec->hw_write = do_spi_write;
-#endif
-
- codec->control_data = container_of(codec->dev,
- struct spi_device,
- dev);
- break;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_codec_set_cache_io);
-
static bool snd_soc_set_cache_val(void *base, unsigned int idx,
unsigned int val, unsigned int word_size)
{
@@ -466,6 +47,9 @@ static bool snd_soc_set_cache_val(void *base, unsigned int idx,
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;
@@ -483,31 +67,86 @@ static unsigned int snd_soc_get_cache_val(const void *base, unsigned int idx,
}
struct snd_soc_rbtree_node {
- struct rb_node node;
- unsigned int reg;
- unsigned int value;
- unsigned int defval;
+ struct rb_node node; /* the actual rbtree node holding this block */
+ unsigned int base_reg; /* base register handled by this block */
+ unsigned int word_size; /* number of bytes needed to represent the register index */
+ void *block; /* block of adjacent registers */
+ unsigned int blklen; /* number of registers available in the block */
} __attribute__ ((packed));
struct snd_soc_rbtree_ctx {
struct rb_root root;
+ struct snd_soc_rbtree_node *cached_rbnode;
};
+static inline void snd_soc_rbtree_get_base_top_reg(
+ struct snd_soc_rbtree_node *rbnode,
+ unsigned int *base, unsigned int *top)
+{
+ *base = rbnode->base_reg;
+ *top = rbnode->base_reg + rbnode->blklen - 1;
+}
+
+static unsigned int snd_soc_rbtree_get_register(
+ struct snd_soc_rbtree_node *rbnode, unsigned int idx)
+{
+ unsigned int val;
+
+ switch (rbnode->word_size) {
+ case 1: {
+ u8 *p = rbnode->block;
+ val = p[idx];
+ return val;
+ }
+ case 2: {
+ u16 *p = rbnode->block;
+ val = p[idx];
+ return val;
+ }
+ default:
+ BUG();
+ break;
+ }
+ return -1;
+}
+
+static void snd_soc_rbtree_set_register(struct snd_soc_rbtree_node *rbnode,
+ unsigned int idx, unsigned int val)
+{
+ switch (rbnode->word_size) {
+ case 1: {
+ u8 *p = rbnode->block;
+ p[idx] = val;
+ break;
+ }
+ case 2: {
+ u16 *p = rbnode->block;
+ p[idx] = val;
+ break;
+ }
+ default:
+ BUG();
+ break;
+ }
+}
+
static struct snd_soc_rbtree_node *snd_soc_rbtree_lookup(
struct rb_root *root, unsigned int reg)
{
struct rb_node *node;
struct snd_soc_rbtree_node *rbnode;
+ unsigned int base_reg, top_reg;
node = root->rb_node;
while (node) {
rbnode = container_of(node, struct snd_soc_rbtree_node, node);
- if (rbnode->reg < reg)
- node = node->rb_left;
- else if (rbnode->reg > reg)
- node = node->rb_right;
- else
+ snd_soc_rbtree_get_base_top_reg(rbnode, &base_reg, &top_reg);
+ if (reg >= base_reg && reg <= top_reg)
return rbnode;
+ else if (reg > top_reg)
+ node = node->rb_right;
+ else if (reg < base_reg)
+ node = node->rb_left;
}
return NULL;
@@ -518,19 +157,28 @@ static int snd_soc_rbtree_insert(struct rb_root *root,
{
struct rb_node **new, *parent;
struct snd_soc_rbtree_node *rbnode_tmp;
+ unsigned int base_reg_tmp, top_reg_tmp;
+ unsigned int base_reg;
parent = NULL;
new = &root->rb_node;
while (*new) {
rbnode_tmp = container_of(*new, struct snd_soc_rbtree_node,
node);
+ /* base and top registers of the current rbnode */
+ snd_soc_rbtree_get_base_top_reg(rbnode_tmp, &base_reg_tmp,
+ &top_reg_tmp);
+ /* base register of the rbnode to be added */
+ base_reg = rbnode->base_reg;
parent = *new;
- if (rbnode_tmp->reg < rbnode->reg)
- new = &((*new)->rb_left);
- else if (rbnode_tmp->reg > rbnode->reg)
- new = &((*new)->rb_right);
- else
+ /* if this register has already been inserted, just return */
+ if (base_reg >= base_reg_tmp &&
+ base_reg <= top_reg_tmp)
return 0;
+ else if (base_reg > top_reg_tmp)
+ new = &((*new)->rb_right);
+ else if (base_reg < base_reg_tmp)
+ new = &((*new)->rb_left);
}
/* insert the node into the rbtree */
@@ -545,58 +193,146 @@ static int snd_soc_rbtree_cache_sync(struct snd_soc_codec *codec)
struct snd_soc_rbtree_ctx *rbtree_ctx;
struct rb_node *node;
struct snd_soc_rbtree_node *rbnode;
- unsigned int val;
+ unsigned int regtmp;
+ unsigned int val, def;
int ret;
+ int i;
rbtree_ctx = codec->reg_cache;
for (node = rb_first(&rbtree_ctx->root); node; node = rb_next(node)) {
rbnode = rb_entry(node, struct snd_soc_rbtree_node, node);
- if (rbnode->value == rbnode->defval)
- continue;
- WARN_ON(codec->writable_register &&
- codec->writable_register(codec, rbnode->reg));
- ret = snd_soc_cache_read(codec, rbnode->reg, &val);
- if (ret)
- return ret;
- codec->cache_bypass = 1;
- ret = snd_soc_write(codec, rbnode->reg, val);
- codec->cache_bypass = 0;
- if (ret)
- return ret;
- dev_dbg(codec->dev, "Synced register %#x, value = %#x\n",
- rbnode->reg, val);
+ for (i = 0; i < rbnode->blklen; ++i) {
+ regtmp = rbnode->base_reg + i;
+ WARN_ON(codec->writable_register &&
+ codec->writable_register(codec, regtmp));
+ val = snd_soc_rbtree_get_register(rbnode, i);
+ def = snd_soc_get_cache_val(codec->reg_def_copy, i,
+ rbnode->word_size);
+ if (val == def)
+ continue;
+
+ codec->cache_bypass = 1;
+ ret = snd_soc_write(codec, regtmp, val);
+ codec->cache_bypass = 0;
+ if (ret)
+ return ret;
+ dev_dbg(codec->dev, "Synced register %#x, value = %#x\n",
+ regtmp, val);
+ }
}
return 0;
}
+static int snd_soc_rbtree_insert_to_block(struct snd_soc_rbtree_node *rbnode,
+ unsigned int pos, unsigned int reg,
+ unsigned int value)
+{
+ u8 *blk;
+
+ blk = krealloc(rbnode->block,
+ (rbnode->blklen + 1) * rbnode->word_size, GFP_KERNEL);
+ if (!blk)
+ return -ENOMEM;
+
+ /* insert the register value in the correct place in the rbnode block */
+ memmove(blk + (pos + 1) * rbnode->word_size,
+ blk + pos * rbnode->word_size,
+ (rbnode->blklen - pos) * rbnode->word_size);
+
+ /* update the rbnode block, its size and the base register */
+ rbnode->block = blk;
+ rbnode->blklen++;
+ if (!pos)
+ rbnode->base_reg = reg;
+
+ snd_soc_rbtree_set_register(rbnode, pos, value);
+ return 0;
+}
+
static int snd_soc_rbtree_cache_write(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
struct snd_soc_rbtree_ctx *rbtree_ctx;
- struct snd_soc_rbtree_node *rbnode;
+ struct snd_soc_rbtree_node *rbnode, *rbnode_tmp;
+ struct rb_node *node;
+ unsigned int val;
+ unsigned int reg_tmp;
+ unsigned int base_reg, top_reg;
+ unsigned int pos;
+ int i;
+ int ret;
rbtree_ctx = codec->reg_cache;
+ /* look up the required register in the cached rbnode */
+ rbnode = rbtree_ctx->cached_rbnode;
+ if (rbnode) {
+ snd_soc_rbtree_get_base_top_reg(rbnode, &base_reg, &top_reg);
+ if (reg >= base_reg && reg <= top_reg) {
+ reg_tmp = reg - base_reg;
+ val = snd_soc_rbtree_get_register(rbnode, reg_tmp);
+ if (val == value)
+ return 0;
+ snd_soc_rbtree_set_register(rbnode, reg_tmp, value);
+ return 0;
+ }
+ }
+ /* if we can't locate it in the cached rbnode we'll have
+ * to traverse the rbtree looking for it.
+ */
rbnode = snd_soc_rbtree_lookup(&rbtree_ctx->root, reg);
if (rbnode) {
- if (rbnode->value == value)
+ reg_tmp = reg - rbnode->base_reg;
+ val = snd_soc_rbtree_get_register(rbnode, reg_tmp);
+ if (val == value)
return 0;
- rbnode->value = value;
+ snd_soc_rbtree_set_register(rbnode, reg_tmp, value);
+ rbtree_ctx->cached_rbnode = rbnode;
} else {
/* bail out early, no need to create the rbnode yet */
if (!value)
return 0;
- /*
- * for uninitialized registers whose value is changed
- * from the default zero, create an rbnode and insert
- * it into the tree.
+ /* look for an adjacent register to the one we are about to add */
+ for (node = rb_first(&rbtree_ctx->root); node;
+ node = rb_next(node)) {
+ rbnode_tmp = rb_entry(node, struct snd_soc_rbtree_node, node);
+ for (i = 0; i < rbnode_tmp->blklen; ++i) {
+ reg_tmp = rbnode_tmp->base_reg + i;
+ if (abs(reg_tmp - reg) != 1)
+ continue;
+ /* decide where in the block to place our register */
+ if (reg_tmp + 1 == reg)
+ pos = i + 1;
+ else
+ pos = i;
+ ret = snd_soc_rbtree_insert_to_block(rbnode_tmp, pos,
+ reg, value);
+ if (ret)
+ return ret;
+ rbtree_ctx->cached_rbnode = rbnode_tmp;
+ return 0;
+ }
+ }
+ /* we did not manage to find a place to insert it in an existing
+ * block so create a new rbnode with a single register in its block.
+ * This block will get populated further if any other adjacent
+ * registers get modified in the future.
*/
rbnode = kzalloc(sizeof *rbnode, GFP_KERNEL);
if (!rbnode)
return -ENOMEM;
- rbnode->reg = reg;
- rbnode->value = value;
+ rbnode->blklen = 1;
+ rbnode->base_reg = reg;
+ rbnode->word_size = codec->driver->reg_word_size;
+ rbnode->block = kmalloc(rbnode->blklen * rbnode->word_size,
+ GFP_KERNEL);
+ if (!rbnode->block) {
+ kfree(rbnode);
+ return -ENOMEM;
+ }
+ snd_soc_rbtree_set_register(rbnode, 0, value);
snd_soc_rbtree_insert(&rbtree_ctx->root, rbnode);
+ rbtree_ctx->cached_rbnode = rbnode;
}
return 0;
@@ -607,11 +343,28 @@ static int snd_soc_rbtree_cache_read(struct snd_soc_codec *codec,
{
struct snd_soc_rbtree_ctx *rbtree_ctx;
struct snd_soc_rbtree_node *rbnode;
+ unsigned int base_reg, top_reg;
+ unsigned int reg_tmp;
rbtree_ctx = codec->reg_cache;
+ /* look up the required register in the cached rbnode */
+ rbnode = rbtree_ctx->cached_rbnode;
+ if (rbnode) {
+ snd_soc_rbtree_get_base_top_reg(rbnode, &base_reg, &top_reg);
+ if (reg >= base_reg && reg <= top_reg) {
+ reg_tmp = reg - base_reg;
+ *value = snd_soc_rbtree_get_register(rbnode, reg_tmp);
+ return 0;
+ }
+ }
+ /* if we can't locate it in the cached rbnode we'll have
+ * to traverse the rbtree looking for it.
+ */
rbnode = snd_soc_rbtree_lookup(&rbtree_ctx->root, reg);
if (rbnode) {
- *value = rbnode->value;
+ reg_tmp = reg - rbnode->base_reg;
+ *value = snd_soc_rbtree_get_register(rbnode, reg_tmp);
+ rbtree_ctx->cached_rbnode = rbnode;
} else {
/* uninitialized registers default to 0 */
*value = 0;
@@ -637,6 +390,7 @@ static int snd_soc_rbtree_cache_exit(struct snd_soc_codec *codec)
rbtree_node = rb_entry(next, struct snd_soc_rbtree_node, node);
next = rb_next(&rbtree_node->node);
rb_erase(&rbtree_node->node, &rbtree_ctx->root);
+ kfree(rbtree_node->block);
kfree(rbtree_node);
}
@@ -649,10 +403,9 @@ static int snd_soc_rbtree_cache_exit(struct snd_soc_codec *codec)
static int snd_soc_rbtree_cache_init(struct snd_soc_codec *codec)
{
- struct snd_soc_rbtree_node *rbtree_node;
struct snd_soc_rbtree_ctx *rbtree_ctx;
- unsigned int val;
unsigned int word_size;
+ unsigned int val;
int i;
int ret;
@@ -662,32 +415,27 @@ static int snd_soc_rbtree_cache_init(struct snd_soc_codec *codec)
rbtree_ctx = codec->reg_cache;
rbtree_ctx->root = RB_ROOT;
+ rbtree_ctx->cached_rbnode = NULL;
if (!codec->reg_def_copy)
return 0;
- /*
- * populate the rbtree with the initialized registers. All other
- * registers will be inserted when they are first modified.
- */
word_size = codec->driver->reg_word_size;
for (i = 0; i < codec->driver->reg_cache_size; ++i) {
- val = snd_soc_get_cache_val(codec->reg_def_copy, i, word_size);
+ val = snd_soc_get_cache_val(codec->reg_def_copy, i,
+ word_size);
if (!val)
continue;
- rbtree_node = kzalloc(sizeof *rbtree_node, GFP_KERNEL);
- if (!rbtree_node) {
- ret = -ENOMEM;
- snd_soc_cache_exit(codec);
- break;
- }
- rbtree_node->reg = i;
- rbtree_node->value = val;
- rbtree_node->defval = val;
- snd_soc_rbtree_insert(&rbtree_ctx->root, rbtree_node);
+ ret = snd_soc_rbtree_cache_write(codec, i, val);
+ if (ret)
+ goto err;
}
return 0;
+
+err:
+ snd_soc_cache_exit(codec);
+ return ret;
}
#ifdef CONFIG_SND_SOC_CACHE_LZO
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-18 22:16:14 +0000