redonkable/alistair23-linux
redonkable/alistair23-linux
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Merge branches 'regmap-linus' and 'regmap-interface' into regmap-next

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This commit is contained in:
Mark Brown 2011-08-08 15:55:53 +09:00
parent 2547e201b3 40c5cc2639 18694886bd
commit 555fedacc3
2 changed files with 33 additions and 1 deletions
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11
drivers/base/regmap/regmap.c
View file

@ -37,6 +37,11 @@ struct regmap {
void *work_buf; /* Scratch buffer used to format I/O */
struct regmap_format format; /* Buffer format */
const struct regmap_bus *bus;
unsigned int max_register;
bool (*writeable_reg)(struct device *dev, unsigned int reg);
bool (*readable_reg)(struct device *dev, unsigned int reg);
bool (*volatile_reg)(struct device *dev, unsigned int reg);
};
static void regmap_format_4_12_write(struct regmap *map,
@ -116,6 +121,10 @@ struct regmap *regmap_init(struct device *dev,
map->format.val_bytes = config->val_bits / 8;
map->dev = dev;
map->bus = bus;
map->max_register = config->max_register;
map->writeable_reg = config->writeable_reg;
map->readable_reg = config->readable_reg;
map->volatile_reg = config->volatile_reg;
switch (config->reg_bits) {
case 4:
@ -323,7 +332,7 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
u8[0] |= map->bus->read_flag_mask;
ret = map->bus->read(map->dev, map->work_buf, map->format.reg_bytes,
val, map->format.val_bytes);
val, val_len);
if (ret != 0)
return ret;

23
include/linux/regmap.h
View file

@ -20,9 +20,32 @@
struct i2c_client;
struct spi_device;
/**
* Configuration for the register map of a device.
*
* @reg_bits: Number of bits in a register address, mandatory.
* @val_bits: Number of bits in a register value, mandatory.
*
* @max_register: Optional, specifies the maximum valid register index.
* @writeable_register: Optional callback returning true if the register
* can be written to.
* @readable_register: Optional callback returning true if the register
* can be read from.
* @volatile_register: Optional callback returning true if the register
* value can't be cached.
* @precious_register: Optional callback returning true if the rgister
* should not be read outside of a call from the driver
* (eg, a clear on read interrupt status register).
*/
struct regmap_config {
int reg_bits;
int val_bits;
unsigned int max_register;
bool (*writeable_reg)(struct device *dev, unsigned int reg);
bool (*readable_reg)(struct device *dev, unsigned int reg);
bool (*volatile_reg)(struct device *dev, unsigned int reg);
bool (*precious_reg)(struct device *dev, unsigned int reg);
};
typedef int (*regmap_hw_write)(struct device *dev, const void *data,