68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
#ifndef __REGMAP_H
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#define __REGMAP_H
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/**
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* Configuration for the register map of a device.
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*
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* @name: Optional name of the regmap. Useful when a device has multiple
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* register regions.
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*
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* @reg_bits: Number of bits in a register address, mandatory.
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* @reg_stride: The register address stride. Valid register addresses are a
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* multiple of this value. If set to 0, a value of 1 will be
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* used.
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* @pad_bits: Number of bits of padding between register and value.
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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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*/
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struct regmap_config {
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const char *name;
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int reg_bits;
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int reg_stride;
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int pad_bits;
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int val_bits;
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unsigned int max_register;
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};
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typedef int (*regmap_hw_reg_read)(void *context, unsigned int reg,
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unsigned int *val);
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typedef int (*regmap_hw_reg_write)(void *context, unsigned int reg,
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unsigned int val);
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struct regmap_bus {
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regmap_hw_reg_write reg_write;
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regmap_hw_reg_read reg_read;
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};
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struct regmap *regmap_init(struct device_d *dev,
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const struct regmap_bus *bus,
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void *bus_context,
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const struct regmap_config *config);
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void regmap_exit(struct regmap *map);
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struct regmap *dev_get_regmap(struct device_d *dev, const char *name);
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struct regmap *of_node_to_regmap(struct device_node *node);
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int regmap_register_cdev(struct regmap *map, const char *name);
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int regmap_write(struct regmap *map, unsigned int reg, unsigned int val);
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int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val);
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int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
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size_t val_len);
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int regmap_bulk_write(struct regmap *map, unsigned int reg,
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const void *val, size_t val_len);
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int regmap_get_val_bytes(struct regmap *map);
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int regmap_get_max_register(struct regmap *map);
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int regmap_get_reg_stride(struct regmap *map);
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int regmap_write_bits(struct regmap *map, unsigned int reg,
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unsigned int mask, unsigned int val);
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#endif /* __REGMAP_H */
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