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Merge branch 'regmap-interface' into regmap-next

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This commit is contained in:
Mark Brown 2011-08-21 12:55:20 +01:00
commit ae130d22de
1 changed files with 22 additions and 2 deletions
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24
include/linux/regmap.h
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@ -20,13 +20,25 @@
struct i2c_client; struct i2c_client;
struct spi_device; 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. * Configuration for the register map of a device.
* *
* @reg_bits: Number of bits in a register address, mandatory. * @reg_bits: Number of bits in a register address, mandatory.
* @val_bits: Number of bits in a register value, 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 * @writeable_reg: Optional callback returning true if the register
* can be written to. * can be written to.
* @readable_reg: Optional callback returning true if the register * @readable_reg: Optional callback returning true if the register
@ -36,16 +48,24 @@ struct spi_device;
* @precious_reg: Optional callback returning true if the rgister * @precious_reg: Optional callback returning true if the rgister
* should not be read outside of a call from the driver * should not be read outside of a call from the driver
* (eg, a clear on read interrupt status register). * (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 { struct regmap_config {
int reg_bits; int reg_bits;
int val_bits; int val_bits;
unsigned int max_register;
bool (*writeable_reg)(struct device *dev, unsigned int reg); bool (*writeable_reg)(struct device *dev, unsigned int reg);
bool (*readable_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 (*volatile_reg)(struct device *dev, unsigned int reg);
bool (*precious_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, typedef int (*regmap_hw_write)(struct device *dev, const void *data,