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Merge branch 'regmap-interface' into regmap-next
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commit
ae130d22de
1 changed files with 22 additions and 2 deletions
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@ -20,13 +20,25 @@
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struct i2c_client;
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struct spi_device;
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/**
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* Default value for a register. We use an array of structs rather
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* than a simple array as many modern devices have very sparse
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* register maps.
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*
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* @reg: Register address.
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* @def: Register default value.
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*/
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struct reg_default {
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unsigned int reg;
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unsigned int def;
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};
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/**
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* Configuration for the register map of a device.
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*
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* @reg_bits: Number of bits in a register address, mandatory.
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* @val_bits: Number of bits in a register value, mandatory.
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*
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* @max_register: Optional, specifies the maximum valid register index.
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* @writeable_reg: Optional callback returning true if the register
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* can be written to.
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* @readable_reg: Optional callback returning true if the register
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@ -36,16 +48,24 @@ struct spi_device;
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* @precious_reg: Optional callback returning true if the rgister
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* should not be read outside of a call from the driver
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* (eg, a clear on read interrupt status register).
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*
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* @max_register: Optional, specifies the maximum valid register index.
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* @reg_defaults: Power on reset values for registers (for use with
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* register cache support).
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* @num_reg_defaults: Number of elements in reg_defaults.
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*/
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struct regmap_config {
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int reg_bits;
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int val_bits;
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unsigned int max_register;
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bool (*writeable_reg)(struct device *dev, unsigned int reg);
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bool (*readable_reg)(struct device *dev, unsigned int reg);
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bool (*volatile_reg)(struct device *dev, unsigned int reg);
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bool (*precious_reg)(struct device *dev, unsigned int reg);
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unsigned int max_register;
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struct reg_default *reg_defaults;
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int num_reg_defaults;
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};
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typedef int (*regmap_hw_write)(struct device *dev, const void *data,
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