diff options
Diffstat (limited to 'include/regmap.h')
-rw-r--r-- | include/regmap.h | 175 |
1 files changed, 21 insertions, 154 deletions
diff --git a/include/regmap.h b/include/regmap.h index 4b30c21776..f2c395a896 100644 --- a/include/regmap.h +++ b/include/regmap.h @@ -2,168 +2,35 @@ #ifndef __REGMAP_H #define __REGMAP_H -enum regmap_endian { - /* Unspecified -> 0 -> Backwards compatible default */ - REGMAP_ENDIAN_DEFAULT = 0, - REGMAP_ENDIAN_BIG, - REGMAP_ENDIAN_LITTLE, - REGMAP_ENDIAN_NATIVE, -}; +#include <linux/compiler.h> +#include <linux/types.h> -/** - * Configuration for the register map of a device. - * - * @name: Optional name of the regmap. Useful when a device has multiple - * register regions. - * - * @reg_bits: Number of bits in a register address, mandatory. - * @reg_stride: The register address stride. Valid register addresses are a - * multiple of this value. If set to 0, a value of 1 will be - * used. - * @pad_bits: Number of bits of padding between register and value. - * @val_bits: Number of bits in a register value, mandatory. - * - * @max_register: Optional, specifies the maximum valid register index. - */ -struct regmap_config { - const char *name; +extern void __compiletime_error("Last argument is now number of registers, not bytes. Fix " + "it and include <linux/regmap.h> instead") +__regmap_bulk_api_changed(void); - int reg_bits; - int reg_stride; - int pad_bits; - int val_bits; +struct regmap; - unsigned int max_register; - - enum regmap_endian reg_format_endian; - enum regmap_endian val_format_endian; -}; - -typedef int (*regmap_hw_reg_read)(void *context, unsigned int reg, - unsigned int *val); -typedef int (*regmap_hw_reg_write)(void *context, unsigned int reg, - unsigned int val); - -struct regmap_bus { - regmap_hw_reg_write reg_write; - regmap_hw_reg_read reg_read; - enum regmap_endian reg_format_endian_default; - enum regmap_endian val_format_endian_default; -}; - -struct device_d; -struct device_node; - -struct regmap *regmap_init(struct device_d *dev, - const struct regmap_bus *bus, - void *bus_context, - const struct regmap_config *config); - -struct clk; - -/** - * regmap_init_mmio_clk() - Initialise register map with register clock - * - * @dev: Device that will be interacted with - * @clk_id: register clock consumer ID - * @regs: Pointer to memory-mapped IO region - * @config: Configuration for register map - * - * The return value will be an ERR_PTR() on error or a valid pointer to - * a struct regmap. - */ -struct regmap *regmap_init_mmio_clk(struct device_d *dev, const char *clk_id, - void __iomem *regs, - const struct regmap_config *config); - -/** - * regmap_init_i2c() - Initialise i2c register map - * - * @i2c: Device that will be interacted with - * @config: Configuration for register map - * - * The return value will be an ERR_PTR() on error or a valid pointer - * to a struct regmap. - */ -struct i2c_client; -struct regmap *regmap_init_i2c(struct i2c_client *i2c, - const struct regmap_config *config); - -/** - * regmap_init_mmio() - Initialise register map - * - * @dev: Device that will be interacted with - * @regs: Pointer to memory-mapped IO region - * @config: Configuration for register map - * - * The return value will be an ERR_PTR() on error or a valid pointer to - * a struct regmap. - */ -#define regmap_init_mmio(dev, regs, config) \ - regmap_init_mmio_clk(dev, NULL, regs, config) - - -int regmap_mmio_attach_clk(struct regmap *map, struct clk *clk); -void regmap_mmio_detach_clk(struct regmap *map); - -void regmap_exit(struct regmap *map); - -struct regmap *dev_get_regmap(struct device_d *dev, const char *name); -struct device_d *regmap_get_device(struct regmap *map); - -int regmap_register_cdev(struct regmap *map, const char *name); - -int regmap_write(struct regmap *map, unsigned int reg, unsigned int val); -int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val); - -int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, - size_t val_len); -int regmap_bulk_write(struct regmap *map, unsigned int reg, - const void *val, size_t val_len); - -int regmap_get_val_bytes(struct regmap *map); -int regmap_get_max_register(struct regmap *map); -int regmap_get_reg_stride(struct regmap *map); - -int regmap_write_bits(struct regmap *map, unsigned int reg, - unsigned int mask, unsigned int val); -int regmap_update_bits(struct regmap *map, unsigned int reg, - unsigned int mask, unsigned int val); - -static inline int regmap_set_bits(struct regmap *map, - unsigned int reg, unsigned int bits) +#ifndef regmap_bulk_read +#define regmap_bulk_read regmap_bulk_read +static inline int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, + size_t val_bytes) { - return regmap_update_bits(map, reg, bits, bits); + __regmap_bulk_api_changed(); + return -1; } +#endif -static inline int regmap_clear_bits(struct regmap *map, - unsigned int reg, unsigned int bits) +#ifndef regmap_bulk_write +#define regmap_bulk_write regmap_bulk_write +static inline int regmap_bulk_write(struct regmap *map, unsigned int reg, + const void *val, size_t val_bytes) { - return regmap_update_bits(map, reg, bits, 0); + __regmap_bulk_api_changed(); + return -1; } +#endif -/** - * regmap_read_poll_timeout - Poll until a condition is met or a timeout occurs - * - * @map: Regmap to read from - * @addr: Address to poll - * @val: Unsigned integer variable to read the value into - * @cond: Break condition (usually involving @val) - * @timeout_us: Timeout in us, 0 means never timeout - * - * Returns 0 on success and -ETIMEDOUT upon a timeout or the regmap_read - * error return value in case of a error read. In the two former cases, - * the last read value at @addr is stored in @val. Must not be called - * from atomic context if sleep_us or timeout_us are used. - * - * This is modelled after the readx_poll_timeout macros in linux/iopoll.h. - */ -#define regmap_read_poll_timeout(map, addr, val, cond, timeout_us) \ -({ \ - int __ret, __tmp; \ - __tmp = read_poll_timeout(regmap_read, __ret, __ret || (cond), \ - timeout_us, (map), (addr), &(val)); \ - __ret ?: __tmp; \ -}) +#include <linux/regmap.h> #endif /* __REGMAP_H */ |