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-rw-r--r--drivers/base/regmap/internal.h11
-rw-r--r--drivers/base/regmap/regcache-lzo.c16
-rw-r--r--drivers/base/regmap/regcache-rbtree.c27
-rw-r--r--drivers/base/regmap/regcache.c97
-rw-r--r--drivers/base/regmap/regmap-debugfs.c84
-rw-r--r--drivers/base/regmap/regmap-i2c.c17
-rw-r--r--drivers/base/regmap/regmap-spi.c17
-rw-r--r--drivers/base/regmap/regmap.c236
-rw-r--r--drivers/mfd/wm831x-core.c20
-rw-r--r--drivers/mfd/wm831x-i2c.c2
-rw-r--r--drivers/mfd/wm831x-spi.c2
-rw-r--r--drivers/mfd/wm8400-core.c7
-rw-r--r--drivers/mfd/wm8994-core.c92
13 files changed, 530 insertions, 98 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index d141b80479b5..fcafc5b2e651 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -22,6 +22,7 @@ struct regcache_ops;
struct regmap_format {
size_t buf_size;
size_t reg_bytes;
+ size_t pad_bytes;
size_t val_bytes;
void (*format_write)(struct regmap *map,
unsigned int reg, unsigned int val);
@@ -65,16 +66,16 @@ struct regmap {
unsigned int num_reg_defaults_raw;
/* if set, only the cache is modified not the HW */
- unsigned int cache_only:1;
+ u32 cache_only;
/* if set, only the HW is modified not the cache */
- unsigned int cache_bypass:1;
+ u32 cache_bypass;
/* if set, remember to free reg_defaults_raw */
- unsigned int cache_free:1;
+ bool cache_free;
struct reg_default *reg_defaults;
const void *reg_defaults_raw;
void *cache;
- bool cache_dirty;
+ u32 cache_dirty;
struct reg_default *patch;
int patch_regs;
@@ -87,7 +88,7 @@ struct regcache_ops {
int (*exit)(struct regmap *map);
int (*read)(struct regmap *map, unsigned int reg, unsigned int *value);
int (*write)(struct regmap *map, unsigned int reg, unsigned int value);
- int (*sync)(struct regmap *map);
+ int (*sync)(struct regmap *map, unsigned int min, unsigned int max);
};
bool regmap_writeable(struct regmap *map, unsigned int reg);
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index b7d16143edeb..8d0061569326 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -331,7 +331,8 @@ out:
return ret;
}
-static int regcache_lzo_sync(struct regmap *map)
+static int regcache_lzo_sync(struct regmap *map, unsigned int min,
+ unsigned int max)
{
struct regcache_lzo_ctx **lzo_blocks;
unsigned int val;
@@ -339,10 +340,21 @@ static int regcache_lzo_sync(struct regmap *map)
int ret;
lzo_blocks = map->cache;
- for_each_set_bit(i, lzo_blocks[0]->sync_bmp, lzo_blocks[0]->sync_bmp_nbits) {
+ i = min;
+ for_each_set_bit_cont(i, lzo_blocks[0]->sync_bmp,
+ lzo_blocks[0]->sync_bmp_nbits) {
+ if (i > max)
+ continue;
+
ret = regcache_read(map, i, &val);
if (ret)
return ret;
+
+ /* Is this the hardware default? If so skip. */
+ ret = regcache_lookup_reg(map, i);
+ if (ret > 0 && val == map->reg_defaults[ret].def)
+ continue;
+
map->cache_bypass = 1;
ret = _regmap_write(map, i, val);
map->cache_bypass = 0;
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 32620c4f1683..8d51916a283d 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -357,7 +357,8 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
return 0;
}
-static int regcache_rbtree_sync(struct regmap *map)
+static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
+ unsigned int max)
{
struct regcache_rbtree_ctx *rbtree_ctx;
struct rb_node *node;
@@ -365,19 +366,37 @@ static int regcache_rbtree_sync(struct regmap *map)
unsigned int regtmp;
unsigned int val;
int ret;
- int i;
+ int i, base, end;
rbtree_ctx = map->cache;
for (node = rb_first(&rbtree_ctx->root); node; node = rb_next(node)) {
rbnode = rb_entry(node, struct regcache_rbtree_node, node);
- for (i = 0; i < rbnode->blklen; i++) {
+
+ if (rbnode->base_reg < min)
+ continue;
+ if (rbnode->base_reg > max)
+ break;
+ if (rbnode->base_reg + rbnode->blklen < min)
+ continue;
+
+ if (min > rbnode->base_reg)
+ base = min - rbnode->base_reg;
+ else
+ base = 0;
+
+ if (max < rbnode->base_reg + rbnode->blklen)
+ end = rbnode->base_reg + rbnode->blklen - max;
+ else
+ end = rbnode->blklen;
+
+ for (i = base; i < end; i++) {
regtmp = rbnode->base_reg + i;
val = regcache_rbtree_get_register(rbnode, i,
map->cache_word_size);
/* Is this the hardware default? If so skip. */
ret = regcache_lookup_reg(map, i);
- if (ret > 0 && val == map->reg_defaults[ret].def)
+ if (ret >= 0 && val == map->reg_defaults[ret].def)
continue;
map->cache_bypass = 1;
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 5cd2a37e7688..938cb1d2ea26 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -35,12 +35,17 @@ static int regcache_hw_init(struct regmap *map)
return -EINVAL;
if (!map->reg_defaults_raw) {
+ u32 cache_bypass = map->cache_bypass;
dev_warn(map->dev, "No cache defaults, reading back from HW\n");
+
+ /* Bypass the cache access till data read from HW*/
+ map->cache_bypass = 1;
tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);
if (!tmp_buf)
return -EINVAL;
ret = regmap_bulk_read(map, 0, tmp_buf,
map->num_reg_defaults_raw);
+ map->cache_bypass = cache_bypass;
if (ret < 0) {
kfree(tmp_buf);
return ret;
@@ -211,7 +216,6 @@ int regcache_read(struct regmap *map,
return -EINVAL;
}
-EXPORT_SYMBOL_GPL(regcache_read);
/**
* regcache_write: Set the value of a given register in the cache.
@@ -238,7 +242,6 @@ int regcache_write(struct regmap *map,
return 0;
}
-EXPORT_SYMBOL_GPL(regcache_write);
/**
* regcache_sync: Sync the register cache with the hardware.
@@ -254,12 +257,11 @@ EXPORT_SYMBOL_GPL(regcache_write);
int regcache_sync(struct regmap *map)
{
int ret = 0;
- unsigned int val;
unsigned int i;
const char *name;
unsigned int bypass;
- BUG_ON(!map->cache_ops);
+ BUG_ON(!map->cache_ops || !map->cache_ops->sync);
mutex_lock(&map->lock);
/* Remember the initial bypass state */
@@ -269,7 +271,11 @@ int regcache_sync(struct regmap *map)
name = map->cache_ops->name;
trace_regcache_sync(map->dev, name, "start");
+ if (!map->cache_dirty)
+ goto out;
+
/* Apply any patch first */
+ map->cache_bypass = 1;
for (i = 0; i < map->patch_regs; i++) {
ret = _regmap_write(map, map->patch[i].reg, map->patch[i].def);
if (ret != 0) {
@@ -278,27 +284,13 @@ int regcache_sync(struct regmap *map)
goto out;
}
}
+ map->cache_bypass = 0;
- if (!map->cache_dirty)
- goto out;
- if (map->cache_ops->sync) {
- ret = map->cache_ops->sync(map);
- } else {
- for (i = 0; i < map->num_reg_defaults; i++) {
- ret = regcache_read(map, i, &val);
- if (ret < 0)
- goto out;
- map->cache_bypass = 1;
- ret = _regmap_write(map, i, val);
- map->cache_bypass = 0;
- if (ret < 0)
- goto out;
- dev_dbg(map->dev, "Synced register %#x, value %#x\n",
- map->reg_defaults[i].reg,
- map->reg_defaults[i].def);
- }
+ ret = map->cache_ops->sync(map, 0, map->max_register);
+
+ if (ret == 0)
+ map->cache_dirty = false;
- }
out:
trace_regcache_sync(map->dev, name, "stop");
/* Restore the bypass state */
@@ -310,6 +302,51 @@ out:
EXPORT_SYMBOL_GPL(regcache_sync);
/**
+ * regcache_sync_region: Sync part of the register cache with the hardware.
+ *
+ * @map: map to sync.
+ * @min: first register to sync
+ * @max: last register to sync
+ *
+ * Write all non-default register values in the specified region to
+ * the hardware.
+ *
+ * Return a negative value on failure, 0 on success.
+ */
+int regcache_sync_region(struct regmap *map, unsigned int min,
+ unsigned int max)
+{
+ int ret = 0;
+ const char *name;
+ unsigned int bypass;
+
+ BUG_ON(!map->cache_ops || !map->cache_ops->sync);
+
+ mutex_lock(&map->lock);
+
+ /* Remember the initial bypass state */
+ bypass = map->cache_bypass;
+
+ name = map->cache_ops->name;
+ dev_dbg(map->dev, "Syncing %s cache from %d-%d\n", name, min, max);
+
+ trace_regcache_sync(map->dev, name, "start region");
+
+ if (!map->cache_dirty)
+ goto out;
+
+ ret = map->cache_ops->sync(map, min, max);
+
+out:
+ trace_regcache_sync(map->dev, name, "stop region");
+ /* Restore the bypass state */
+ map->cache_bypass = bypass;
+ mutex_unlock(&map->lock);
+
+ return ret;
+}
+
+/**
* regcache_cache_only: Put a register map into cache only mode
*
* @map: map to configure
@@ -326,6 +363,7 @@ void regcache_cache_only(struct regmap *map, bool enable)
mutex_lock(&map->lock);
WARN_ON(map->cache_bypass && enable);
map->cache_only = enable;
+ trace_regmap_cache_only(map->dev, enable);
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_cache_only);
@@ -363,6 +401,7 @@ void regcache_cache_bypass(struct regmap *map, bool enable)
mutex_lock(&map->lock);
WARN_ON(map->cache_only && enable);
map->cache_bypass = enable;
+ trace_regmap_cache_bypass(map->dev, enable);
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_cache_bypass);
@@ -385,10 +424,16 @@ bool regcache_set_val(void *base, unsigned int idx,
cache[idx] = val;
break;
}
+ case 4: {
+ u32 *cache = base;
+ if (cache[idx] == val)
+ return true;
+ cache[idx] = val;
+ break;
+ }
default:
BUG();
}
- /* unreachable */
return false;
}
@@ -407,6 +452,10 @@ unsigned int regcache_get_val(const void *base, unsigned int idx,
const u16 *cache = base;
return cache[idx];
}
+ case 4: {
+ const u32 *cache = base;
+ return cache[idx];
+ }
default:
BUG();
}
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 6f397476e27c..372f81a21201 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -11,7 +11,6 @@
*/
#include <linux/slab.h>
-#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/debugfs.h>
#include <linux/uaccess.h>
@@ -33,6 +32,35 @@ static int regmap_open_file(struct inode *inode, struct file *file)
return 0;
}
+static ssize_t regmap_name_read_file(struct file *file,
+ char __user *user_buf, size_t count,
+ loff_t *ppos)
+{
+ struct regmap *map = file->private_data;
+ int ret;
+ char *buf;
+
+ buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name);
+ if (ret < 0) {
+ kfree(buf);
+ return ret;
+ }
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+ kfree(buf);
+ return ret;
+}
+
+static const struct file_operations regmap_name_fops = {
+ .open = regmap_open_file,
+ .read = regmap_name_read_file,
+ .llseek = default_llseek,
+};
+
static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@@ -103,9 +131,51 @@ out:
return ret;
}
+#undef REGMAP_ALLOW_WRITE_DEBUGFS
+#ifdef REGMAP_ALLOW_WRITE_DEBUGFS
+/*
+ * This can be dangerous especially when we have clients such as
+ * PMICs, therefore don't provide any real compile time configuration option
+ * for this feature, people who want to use this will need to modify
+ * the source code directly.
+ */
+static ssize_t regmap_map_write_file(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ char buf[32];
+ size_t buf_size;
+ char *start = buf;
+ unsigned long reg, value;
+ struct regmap *map = file->private_data;
+
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ buf[buf_size] = 0;
+
+ while (*start == ' ')
+ start++;
+ reg = simple_strtoul(start, &start, 16);
+ while (*start == ' ')
+ start++;
+ if (strict_strtoul(start, 16, &value))
+ return -EINVAL;
+
+ /* Userspace has been fiddling around behind the kernel's back */
+ add_taint(TAINT_USER);
+
+ regmap_write(map, reg, value);
+ return buf_size;
+}
+#else
+#define regmap_map_write_file NULL
+#endif
+
static const struct file_operations regmap_map_fops = {
.open = regmap_open_file,
.read = regmap_map_read_file,
+ .write = regmap_map_write_file,
.llseek = default_llseek,
};
@@ -186,12 +256,24 @@ void regmap_debugfs_init(struct regmap *map)
return;
}
+ debugfs_create_file("name", 0400, map->debugfs,
+ map, &regmap_name_fops);
+
if (map->max_register) {
debugfs_create_file("registers", 0400, map->debugfs,
map, &regmap_map_fops);
debugfs_create_file("access", 0400, map->debugfs,
map, &regmap_access_fops);
}
+
+ if (map->cache_type) {
+ debugfs_create_bool("cache_only", 0400, map->debugfs,
+ &map->cache_only);
+ debugfs_create_bool("cache_dirty", 0400, map->debugfs,
+ &map->cache_dirty);
+ debugfs_create_bool("cache_bypass", 0400, map->debugfs,
+ &map->cache_bypass);
+ }
}
void regmap_debugfs_exit(struct regmap *map)
diff --git a/drivers/base/regmap/regmap-i2c.c b/drivers/base/regmap/regmap-i2c.c
index 38621ec87c05..9a3a8c564389 100644
--- a/drivers/base/regmap/regmap-i2c.c
+++ b/drivers/base/regmap/regmap-i2c.c
@@ -111,4 +111,21 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c,
}
EXPORT_SYMBOL_GPL(regmap_init_i2c);
+/**
+ * devm_regmap_init_i2c(): Initialise managed register map
+ *
+ * @i2c: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap. The regmap will be automatically freed by the
+ * device management code.
+ */
+struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
+ const struct regmap_config *config)
+{
+ return devm_regmap_init(&i2c->dev, &regmap_i2c, config);
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_i2c);
+
MODULE_LICENSE("GPL");
diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c
index 2560658de344..7c0c35a39c33 100644
--- a/drivers/base/regmap/regmap-spi.c
+++ b/drivers/base/regmap/regmap-spi.c
@@ -70,4 +70,21 @@ struct regmap *regmap_init_spi(struct spi_device *spi,
}
EXPORT_SYMBOL_GPL(regmap_init_spi);
+/**
+ * devm_regmap_init_spi(): Initialise register map
+ *
+ * @spi: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap. The map will be automatically freed by the
+ * device management code.
+ */
+struct regmap *devm_regmap_init_spi(struct spi_device *spi,
+ const struct regmap_config *config)
+{
+ return devm_regmap_init(&spi->dev, &regmap_spi, config);
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_spi);
+
MODULE_LICENSE("GPL");
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 7ac234f0b1c5..7a3f535e481c 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -10,8 +10,9 @@
* published by the Free Software Foundation.
*/
+#include <linux/device.h>
#include <linux/slab.h>
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/mutex.h>
#include <linux/err.h>
@@ -36,6 +37,9 @@ bool regmap_readable(struct regmap *map, unsigned int reg)
if (map->max_register && reg > map->max_register)
return false;
+ if (map->format.format_write)
+ return false;
+
if (map->readable_reg)
return map->readable_reg(map->dev, reg);
@@ -44,7 +48,7 @@ bool regmap_readable(struct regmap *map, unsigned int reg)
bool regmap_volatile(struct regmap *map, unsigned int reg)
{
- if (map->max_register && reg > map->max_register)
+ if (!regmap_readable(map, reg))
return false;
if (map->volatile_reg)
@@ -55,7 +59,7 @@ bool regmap_volatile(struct regmap *map, unsigned int reg)
bool regmap_precious(struct regmap *map, unsigned int reg)
{
- if (map->max_register && reg > map->max_register)
+ if (!regmap_readable(map, reg))
return false;
if (map->precious_reg)
@@ -76,6 +80,14 @@ static bool regmap_volatile_range(struct regmap *map, unsigned int reg,
return true;
}
+static void regmap_format_2_6_write(struct regmap *map,
+ unsigned int reg, unsigned int val)
+{
+ u8 *out = map->work_buf;
+
+ *out = (reg << 6) | val;
+}
+
static void regmap_format_4_12_write(struct regmap *map,
unsigned int reg, unsigned int val)
{
@@ -114,6 +126,13 @@ static void regmap_format_16(void *buf, unsigned int val)
b[0] = cpu_to_be16(val);
}
+static void regmap_format_32(void *buf, unsigned int val)
+{
+ __be32 *b = buf;
+
+ b[0] = cpu_to_be32(val);
+}
+
static unsigned int regmap_parse_8(void *buf)
{
u8 *b = buf;
@@ -130,6 +149,15 @@ static unsigned int regmap_parse_16(void *buf)
return b[0];
}
+static unsigned int regmap_parse_32(void *buf)
+{
+ __be32 *b = buf;
+
+ b[0] = be32_to_cpu(b[0]);
+
+ return b[0];
+}
+
/**
* regmap_init(): Initialise register map
*
@@ -159,8 +187,10 @@ struct regmap *regmap_init(struct device *dev,
mutex_init(&map->lock);
map->format.buf_size = (config->reg_bits + config->val_bits) / 8;
- map->format.reg_bytes = config->reg_bits / 8;
- map->format.val_bytes = config->val_bits / 8;
+ map->format.reg_bytes = DIV_ROUND_UP(config->reg_bits, 8);
+ map->format.pad_bytes = config->pad_bits / 8;
+ map->format.val_bytes = DIV_ROUND_UP(config->val_bits, 8);
+ map->format.buf_size += map->format.pad_bytes;
map->dev = dev;
map->bus = bus;
map->max_register = config->max_register;
@@ -178,6 +208,16 @@ struct regmap *regmap_init(struct device *dev,
}
switch (config->reg_bits) {
+ case 2:
+ switch (config->val_bits) {
+ case 6:
+ map->format.format_write = regmap_format_2_6_write;
+ break;
+ default:
+ goto err_map;
+ }
+ break;
+
case 4:
switch (config->val_bits) {
case 12:
@@ -216,6 +256,10 @@ struct regmap *regmap_init(struct device *dev,
map->format.format_reg = regmap_format_16;
break;
+ case 32:
+ map->format.format_reg = regmap_format_32;
+ break;
+
default:
goto err_map;
}
@@ -229,13 +273,17 @@ struct regmap *regmap_init(struct device *dev,
map->format.format_val = regmap_format_16;
map->format.parse_val = regmap_parse_16;
break;
+ case 32:
+ map->format.format_val = regmap_format_32;
+ map->format.parse_val = regmap_parse_32;
+ break;
}
if (!map->format.format_write &&
!(map->format.format_reg && map->format.format_val))
goto err_map;
- map->work_buf = kmalloc(map->format.buf_size, GFP_KERNEL);
+ map->work_buf = kzalloc(map->format.buf_size, GFP_KERNEL);
if (map->work_buf == NULL) {
ret = -ENOMEM;
goto err_map;
@@ -258,6 +306,45 @@ err:
}
EXPORT_SYMBOL_GPL(regmap_init);
+static void devm_regmap_release(struct device *dev, void *res)
+{
+ regmap_exit(*(struct regmap **)res);
+}
+
+/**
+ * devm_regmap_init(): Initialise managed register map
+ *
+ * @dev: Device that will be interacted with
+ * @bus: Bus-specific callbacks to use with device
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap. This function should generally not be called
+ * directly, it should be called by bus-specific init functions. The
+ * map will be automatically freed by the device management code.
+ */
+struct regmap *devm_regmap_init(struct device *dev,
+ const struct regmap_bus *bus,
+ const struct regmap_config *config)
+{
+ struct regmap **ptr, *regmap;
+
+ ptr = devres_alloc(devm_regmap_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+
+ regmap = regmap_init(dev, bus, config);
+ if (!IS_ERR(regmap)) {
+ *ptr = regmap;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+
+ return regmap;
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init);
+
/**
* regmap_reinit_cache(): Reinitialise the current register cache
*
@@ -276,6 +363,7 @@ int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
mutex_lock(&map->lock);
regcache_exit(map);
+ regmap_debugfs_exit(map);
map->max_register = config->max_register;
map->writeable_reg = config->writeable_reg;
@@ -284,6 +372,8 @@ int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
map->precious_reg = config->precious_reg;
map->cache_type = config->cache_type;
+ regmap_debugfs_init(map);
+
map->cache_bypass = false;
map->cache_only = false;
@@ -321,6 +411,26 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
if (!map->writeable_reg(map->dev, reg + i))
return -EINVAL;
+ if (!map->cache_bypass && map->format.parse_val) {
+ unsigned int ival;
+ int val_bytes = map->format.val_bytes;
+ for (i = 0; i < val_len / val_bytes; i++) {
+ memcpy(map->work_buf, val + (i * val_bytes), val_bytes);
+ ival = map->format.parse_val(map->work_buf);
+ ret = regcache_write(map, reg + i, ival);
+ if (ret) {
+ dev_err(map->dev,
+ "Error in caching of register: %u ret: %d\n",
+ reg + i, ret);
+ return ret;
+ }
+ }
+ if (map->cache_only) {
+ map->cache_dirty = true;
+ return 0;
+ }
+ }
+
map->format.format_reg(map->work_buf, reg);
u8[0] |= map->write_flag_mask;
@@ -332,23 +442,28 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
* send the work_buf directly, otherwise try to do a gather
* write.
*/
- if (val == map->work_buf + map->format.reg_bytes)
+ if (val == (map->work_buf + map->format.pad_bytes +
+ map->format.reg_bytes))
ret = map->bus->write(map->dev, map->work_buf,
- map->format.reg_bytes + val_len);
+ map->format.reg_bytes +
+ map->format.pad_bytes +
+ val_len);
else if (map->bus->gather_write)
ret = map->bus->gather_write(map->dev, map->work_buf,
- map->format.reg_bytes,
+ map->format.reg_bytes +
+ map->format.pad_bytes,
val, val_len);
/* If that didn't work fall back on linearising by hand. */
if (ret == -ENOTSUPP) {
- len = map->format.reg_bytes + val_len;
- buf = kmalloc(len, GFP_KERNEL);
+ len = map->format.reg_bytes + map->format.pad_bytes + val_len;
+ buf = kzalloc(len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, map->work_buf, map->format.reg_bytes);
- memcpy(buf + map->format.reg_bytes, val, val_len);
+ memcpy(buf + map->format.reg_bytes + map->format.pad_bytes,
+ val, val_len);
ret = map->bus->write(map->dev, buf, len);
kfree(buf);
@@ -366,7 +481,7 @@ int _regmap_write(struct regmap *map, unsigned int reg,
int ret;
BUG_ON(!map->format.format_write && !map->format.format_val);
- if (!map->cache_bypass) {
+ if (!map->cache_bypass && map->format.format_write) {
ret = regcache_write(map, reg, val);
if (ret != 0)
return ret;
@@ -390,10 +505,12 @@ int _regmap_write(struct regmap *map, unsigned int reg,
return ret;
} else {
- map->format.format_val(map->work_buf + map->format.reg_bytes,
- val);
+ map->format.format_val(map->work_buf + map->format.reg_bytes
+ + map->format.pad_bytes, val);
return _regmap_raw_write(map, reg,
- map->work_buf + map->format.reg_bytes,
+ map->work_buf +
+ map->format.reg_bytes +
+ map->format.pad_bytes,
map->format.val_bytes);
}
}
@@ -441,12 +558,8 @@ EXPORT_SYMBOL_GPL(regmap_write);
int regmap_raw_write(struct regmap *map, unsigned int reg,
const void *val, size_t val_len)
{
- size_t val_count = val_len / map->format.val_bytes;
int ret;
- WARN_ON(!regmap_volatile_range(map, reg, val_count) &&
- map->cache_type != REGCACHE_NONE);
-
mutex_lock(&map->lock);
ret = _regmap_raw_write(map, reg, val, val_len);
@@ -457,6 +570,56 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
}
EXPORT_SYMBOL_GPL(regmap_raw_write);
+/*
+ * regmap_bulk_write(): Write multiple registers to the device
+ *
+ * @map: Register map to write to
+ * @reg: First register to be write from
+ * @val: Block of data to be written, in native register size for device
+ * @val_count: Number of registers to write
+ *
+ * This function is intended to be used for writing a large block of
+ * data to be device either in single transfer or multiple transfer.
+ *
+ * A value of zero will be returned on success, a negative errno will
+ * be returned in error cases.
+ */
+int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
+ size_t val_count)
+{
+ int ret = 0, i;
+ size_t val_bytes = map->format.val_bytes;
+ void *wval;
+
+ if (!map->format.parse_val)
+ return -EINVAL;
+
+ mutex_lock(&map->lock);
+
+ /* No formatting is require if val_byte is 1 */
+ if (val_bytes == 1) {
+ wval = (void *)val;
+ } else {
+ wval = kmemdup(val, val_count * val_bytes, GFP_KERNEL);
+ if (!wval) {
+ ret = -ENOMEM;
+ dev_err(map->dev, "Error in memory allocation\n");
+ goto out;
+ }
+ for (i = 0; i < val_count * val_bytes; i += val_bytes)
+ map->format.parse_val(wval + i);
+ }
+ ret = _regmap_raw_write(map, reg, wval, val_bytes * val_count);
+
+ if (val_bytes != 1)
+ kfree(wval);
+
+out:
+ mutex_unlock(&map->lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(regmap_bulk_write);
+
static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
unsigned int val_len)
{
@@ -476,7 +639,8 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
trace_regmap_hw_read_start(map->dev, reg,
val_len / map->format.val_bytes);
- ret = map->bus->read(map->dev, map->work_buf, map->format.reg_bytes,
+ ret = map->bus->read(map->dev, map->work_buf,
+ map->format.reg_bytes + map->format.pad_bytes,
val, val_len);
trace_regmap_hw_read_done(map->dev, reg,
@@ -549,16 +713,32 @@ EXPORT_SYMBOL_GPL(regmap_read);
int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
size_t val_len)
{
- size_t val_count = val_len / map->format.val_bytes;
- int ret;
-
- WARN_ON(!regmap_volatile_range(map, reg, val_count) &&
- map->cache_type != REGCACHE_NONE);
+ size_t val_bytes = map->format.val_bytes;
+ size_t val_count = val_len / val_bytes;
+ unsigned int v;
+ int ret, i;
mutex_lock(&map->lock);
- ret = _regmap_raw_read(map, reg, val, val_len);
+ if (regmap_volatile_range(map, reg, val_count) || map->cache_bypass ||
+ map->cache_type == REGCACHE_NONE) {
+ /* Physical block read if there's no cache involved */
+ ret = _regmap_raw_read(map, reg, val, val_len);
+
+ } else {
+ /* Otherwise go word by word for the cache; should be low
+ * cost as we expect to hit the cache.
+ */
+ for (i = 0; i < val_count; i++) {
+ ret = _regmap_read(map, reg + i, &v);
+ if (ret != 0)
+ goto out;
+
+ map->format.format_val(val + (i * val_bytes), v);
+ }
+ }
+ out:
mutex_unlock(&map->lock);
return ret;
@@ -712,7 +892,7 @@ int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
}
}
- map->patch = kcalloc(sizeof(struct reg_default), num_regs, GFP_KERNEL);
+ map->patch = kcalloc(num_regs, sizeof(struct reg_default), GFP_KERNEL);
if (map->patch != NULL) {
memcpy(map->patch, regs,
num_regs * sizeof(struct reg_default));
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index f5e54fae8ada..838056c3493a 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -1631,7 +1631,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
- goto err_regmap;
+ goto err;
}
switch (ret) {
case 0x6204:
@@ -1640,20 +1640,20 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
default:
dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
ret = -EINVAL;
- goto err_regmap;
+ goto err;
}
ret = wm831x_reg_read(wm831x, WM831X_REVISION);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
- goto err_regmap;
+ goto err;
}
rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
- goto err_regmap;
+ goto err;
}
/* Some engineering samples do not have the ID set, rely on
@@ -1728,7 +1728,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
default:
dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
ret = -EINVAL;
- goto err_regmap;
+ goto err;
}
/* This will need revisiting in future but is OK for all
@@ -1742,7 +1742,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
- goto err_regmap;
+ goto err;
}
if (ret != 0) {
dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
@@ -1755,7 +1755,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = pdata->pre_init(wm831x);
if (ret != 0) {
dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
- goto err_regmap;
+ goto err;
}
}
@@ -1778,7 +1778,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = wm831x_irq_init(wm831x, irq);
if (ret != 0)
- goto err_regmap;
+ goto err;
wm831x_auxadc_init(wm831x);
@@ -1874,9 +1874,8 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
err_irq:
wm831x_irq_exit(wm831x);
-err_regmap:
+err:
mfd_remove_devices(wm831x->dev);
- regmap_exit(wm831x->regmap);
return ret;
}
@@ -1887,7 +1886,6 @@ void wm831x_device_exit(struct wm831x *wm831x)
if (wm831x->irq_base)
free_irq(wm831x->irq_base + WM831X_IRQ_AUXADC_DATA, wm831x);
wm831x_irq_exit(wm831x);
- regmap_exit(wm831x->regmap);
}
int wm831x_device_suspend(struct wm831x *wm831x)
diff --git a/drivers/mfd/wm831x-i2c.c b/drivers/mfd/wm831x-i2c.c
index cb15609b0a48..2b29caebc9cf 100644
--- a/drivers/mfd/wm831x-i2c.c
+++ b/drivers/mfd/wm831x-i2c.c
@@ -37,7 +37,7 @@ static int wm831x_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, wm831x);
wm831x->dev = &i2c->dev;
- wm831x->regmap = regmap_init_i2c(i2c, &wm831x_regmap_config);
+ wm831x->regmap = devm_regmap_init_i2c(i2c, &wm831x_regmap_config);
if (IS_ERR(wm831x->regmap)) {
ret = PTR_ERR(wm831x->regmap);
dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
diff --git a/drivers/mfd/wm831x-spi.c b/drivers/mfd/wm831x-spi.c
index 62ef3254105f..745c87945664 100644
--- a/drivers/mfd/wm831x-spi.c
+++ b/drivers/mfd/wm831x-spi.c
@@ -40,7 +40,7 @@ static int __devinit wm831x_spi_probe(struct spi_device *spi)
dev_set_drvdata(&spi->dev, wm831x);
wm831x->dev = &spi->dev;
- wm831x->regmap = regmap_init_spi(spi, &wm831x_regmap_config);
+ wm831x->regmap = devm_regmap_init_spi(spi, &wm831x_regmap_config);
if (IS_ERR(wm831x->regmap)) {
ret = PTR_ERR(wm831x->regmap);
dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index 2204893444a6..237764ae5f9b 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -350,7 +350,7 @@ static int wm8400_i2c_probe(struct i2c_client *i2c,
goto err;
}
- wm8400->regmap = regmap_init_i2c(i2c, &wm8400_regmap_config);
+ wm8400->regmap = devm_regmap_init_i2c(i2c, &wm8400_regmap_config);
if (IS_ERR(wm8400->regmap)) {
ret = PTR_ERR(wm8400->regmap);
goto err;
@@ -361,12 +361,10 @@ static int wm8400_i2c_probe(struct i2c_client *i2c,
ret = wm8400_init(wm8400, i2c->dev.platform_data);
if (ret != 0)
- goto map_err;
+ goto err;
return 0;
-map_err:
- regmap_exit(wm8400->regmap);
err:
return ret;
}
@@ -376,7 +374,6 @@ static int wm8400_i2c_remove(struct i2c_client *i2c)
struct wm8400 *wm8400 = i2c_get_clientdata(i2c);
wm8400_release(wm8400);
- regmap_exit(wm8400->regmap);
return 0;
}
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index a04b3c108c8c..98733d408fee 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -359,15 +359,38 @@ static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
}
#endif
+static const __devinitdata struct reg_default wm8994_revc_patch[] = {
+ { 0x102, 0x3 },
+ { 0x56, 0x3 },
+ { 0x817, 0x0 },
+ { 0x102, 0x0 },
+};
+
+static const __devinitdata struct reg_default wm8958_reva_patch[] = {
+ { 0x102, 0x3 },
+ { 0xcb, 0x81 },
+ { 0x817, 0x0 },
+ { 0x102, 0x0 },
+};
+
+static const __devinitdata struct reg_default wm1811_reva_patch[] = {
+ { 0x102, 0x3 },
+ { 0x56, 0x7 },
+ { 0x5d, 0x7e },
+ { 0x5e, 0x0 },
+ { 0x102, 0x0 },
+};
+
/*
* Instantiate the generic non-control parts of the device.
*/
-static int wm8994_device_init(struct wm8994 *wm8994, int irq)
+static __devinit int wm8994_device_init(struct wm8994 *wm8994, int irq)
{
struct wm8994_pdata *pdata = wm8994->dev->platform_data;
struct regmap_config *regmap_config;
+ const struct reg_default *regmap_patch = NULL;
const char *devname;
- int ret, i;
+ int ret, i, patch_regs;
int pulls = 0;
dev_set_drvdata(wm8994->dev, wm8994);
@@ -379,7 +402,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
NULL, 0);
if (ret != 0) {
dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
- goto err_regmap;
+ goto err;
}
switch (wm8994->type) {
@@ -394,7 +417,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
break;
default:
BUG();
- goto err_regmap;
+ goto err;
}
wm8994->supplies = devm_kzalloc(wm8994->dev,
@@ -402,7 +425,7 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
wm8994->num_supplies, GFP_KERNEL);
if (!wm8994->supplies) {
ret = -ENOMEM;
- goto err_regmap;
+ goto err;
}
switch (wm8994->type) {
@@ -420,14 +443,14 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
break;
default:
BUG();
- goto err_regmap;
+ goto err;
}
ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,
wm8994->supplies);
if (ret != 0) {
dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret);
- goto err_regmap;
+ goto err;
}
ret = regulator_bulk_enable(wm8994->num_supplies,
@@ -488,15 +511,44 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
"revision %c not fully supported\n",
'A' + wm8994->revision);
break;
+ case 2:
+ case 3:
+ regmap_patch = wm8994_revc_patch;
+ patch_regs = ARRAY_SIZE(wm8994_revc_patch);
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case WM8958:
+ switch (wm8994->revision) {
+ case 0:
+ regmap_patch = wm8958_reva_patch;
+ patch_regs = ARRAY_SIZE(wm8958_reva_patch);
+ break;
default:
break;
}
break;
+
case WM1811:
/* Revision C did not change the relevant layer */
if (wm8994->revision > 1)
wm8994->revision++;
+ switch (wm8994->revision) {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ regmap_patch = wm1811_reva_patch;
+ patch_regs = ARRAY_SIZE(wm1811_reva_patch);
+ break;
+ default:
+ break;
+ }
break;
+
default:
break;
}
@@ -526,6 +578,16 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
return ret;
}
+ if (regmap_patch) {
+ ret = regmap_register_patch(wm8994->regmap, regmap_patch,
+ patch_regs);
+ if (ret != 0) {
+ dev_err(wm8994->dev, "Failed to register patch: %d\n",
+ ret);
+ goto err;
+ }
+ }
+
if (pdata) {
wm8994->irq_base = pdata->irq_base;
wm8994->gpio_base = pdata->gpio_base;
@@ -588,13 +650,12 @@ err_enable:
wm8994->supplies);
err_get:
regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
-err_regmap:
- regmap_exit(wm8994->regmap);
+err:
mfd_remove_devices(wm8994->dev);
return ret;
}
-static void wm8994_device_exit(struct wm8994 *wm8994)
+static __devexit void wm8994_device_exit(struct wm8994 *wm8994)
{
pm_runtime_disable(wm8994->dev);
mfd_remove_devices(wm8994->dev);
@@ -602,7 +663,6 @@ static void wm8994_device_exit(struct wm8994 *wm8994)
regulator_bulk_disable(wm8994->num_supplies,
wm8994->supplies);
regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
- regmap_exit(wm8994->regmap);
}
static const struct of_device_id wm8994_of_match[] = {
@@ -613,8 +673,8 @@ static const struct of_device_id wm8994_of_match[] = {
};
MODULE_DEVICE_TABLE(of, wm8994_of_match);
-static int wm8994_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
+static __devinit int wm8994_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
{
struct wm8994 *wm8994;
int ret;
@@ -628,7 +688,7 @@ static int wm8994_i2c_probe(struct i2c_client *i2c,
wm8994->irq = i2c->irq;
wm8994->type = id->driver_data;
- wm8994->regmap = regmap_init_i2c(i2c, &wm8994_base_regmap_config);
+ wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config);
if (IS_ERR(wm8994->regmap)) {
ret = PTR_ERR(wm8994->regmap);
dev_err(wm8994->dev, "Failed to allocate register map: %d\n",
@@ -639,7 +699,7 @@ static int wm8994_i2c_probe(struct i2c_client *i2c,
return wm8994_device_init(wm8994, i2c->irq);
}
-static int wm8994_i2c_remove(struct i2c_client *i2c)
+static __devexit int wm8994_i2c_remove(struct i2c_client *i2c)
{
struct wm8994 *wm8994 = i2c_get_clientdata(i2c);
@@ -668,7 +728,7 @@ static struct i2c_driver wm8994_i2c_driver = {
.of_match_table = wm8994_of_match,
},
.probe = wm8994_i2c_probe,
- .remove = wm8994_i2c_remove,
+ .remove = __devexit_p(wm8994_i2c_remove),
.id_table = wm8994_i2c_id,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 01:06:37 +0100