Merge branch 'regmap-interface' into regmap-next

struct i2c_client;

struct spi_device;

/**

 * Default value for a register.  We use an array of structs rather

 * than a simple array as many modern devices have very sparse

 * register maps.

 *

 * @reg: Register address.

 * @def: Register default value.

 */

struct reg_default {

	unsigned int reg;

	unsigned int def;

};

/**

 * 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_reg: Optional callback returning true if the register

 *                 can be written to.

 * @readable_reg: Optional callback returning true if the register

 * @precious_reg: 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).

 *

 * @max_register: Optional, specifies the maximum valid register index.

 * @reg_defaults: Power on reset values for registers (for use with

 *                register cache support).

 * @num_reg_defaults: Number of elements in reg_defaults.

 */

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);

	unsigned int max_register;

	struct reg_default *reg_defaults;

	int num_reg_defaults;

};

typedef int (*regmap_hw_write)(struct device *dev, const void *data,