mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
131 lines
3.9 KiB
C
131 lines
3.9 KiB
C
/*
|
|
* Register map access API internal header
|
|
*
|
|
* Copyright 2011 Wolfson Microelectronics plc
|
|
*
|
|
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _REGMAP_INTERNAL_H
|
|
#define _REGMAP_INTERNAL_H
|
|
|
|
#include <linux/regmap.h>
|
|
#include <linux/fs.h>
|
|
|
|
struct regmap;
|
|
struct regcache_ops;
|
|
|
|
struct regmap_format {
|
|
size_t buf_size;
|
|
size_t reg_bytes;
|
|
size_t pad_bytes;
|
|
size_t val_bytes;
|
|
void (*format_write)(struct regmap *map,
|
|
unsigned int reg, unsigned int val);
|
|
void (*format_reg)(void *buf, unsigned int reg);
|
|
void (*format_val)(void *buf, unsigned int val);
|
|
unsigned int (*parse_val)(void *buf);
|
|
};
|
|
|
|
struct regmap {
|
|
struct mutex lock;
|
|
|
|
struct device *dev; /* Device we do I/O on */
|
|
void *work_buf; /* Scratch buffer used to format I/O */
|
|
struct regmap_format format; /* Buffer format */
|
|
const struct regmap_bus *bus;
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
struct dentry *debugfs;
|
|
#endif
|
|
|
|
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);
|
|
|
|
u8 read_flag_mask;
|
|
u8 write_flag_mask;
|
|
|
|
/* regcache specific members */
|
|
const struct regcache_ops *cache_ops;
|
|
enum regcache_type cache_type;
|
|
|
|
/* number of bytes in reg_defaults_raw */
|
|
unsigned int cache_size_raw;
|
|
/* number of bytes per word in reg_defaults_raw */
|
|
unsigned int cache_word_size;
|
|
/* number of entries in reg_defaults */
|
|
unsigned int num_reg_defaults;
|
|
/* number of entries in reg_defaults_raw */
|
|
unsigned int num_reg_defaults_raw;
|
|
|
|
/* if set, only the cache is modified not the HW */
|
|
u32 cache_only;
|
|
/* if set, only the HW is modified not the cache */
|
|
u32 cache_bypass;
|
|
/* if set, remember to free reg_defaults_raw */
|
|
bool cache_free;
|
|
|
|
struct reg_default *reg_defaults;
|
|
const void *reg_defaults_raw;
|
|
void *cache;
|
|
u32 cache_dirty;
|
|
|
|
struct reg_default *patch;
|
|
int patch_regs;
|
|
};
|
|
|
|
struct regcache_ops {
|
|
const char *name;
|
|
enum regcache_type type;
|
|
int (*init)(struct regmap *map);
|
|
int (*exit)(struct regmap *map);
|
|
int (*read)(struct regmap *map, unsigned int reg, unsigned int *value);
|
|
int (*write)(struct regmap *map, unsigned int reg, unsigned int value);
|
|
int (*sync)(struct regmap *map, unsigned int min, unsigned int max);
|
|
};
|
|
|
|
bool regmap_writeable(struct regmap *map, unsigned int reg);
|
|
bool regmap_readable(struct regmap *map, unsigned int reg);
|
|
bool regmap_volatile(struct regmap *map, unsigned int reg);
|
|
bool regmap_precious(struct regmap *map, unsigned int reg);
|
|
|
|
int _regmap_write(struct regmap *map, unsigned int reg,
|
|
unsigned int val);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
extern void regmap_debugfs_initcall(void);
|
|
extern void regmap_debugfs_init(struct regmap *map);
|
|
extern void regmap_debugfs_exit(struct regmap *map);
|
|
#else
|
|
static inline void regmap_debugfs_initcall(void) { }
|
|
static inline void regmap_debugfs_init(struct regmap *map) { }
|
|
static inline void regmap_debugfs_exit(struct regmap *map) { }
|
|
#endif
|
|
|
|
/* regcache core declarations */
|
|
int regcache_init(struct regmap *map, const struct regmap_config *config);
|
|
void regcache_exit(struct regmap *map);
|
|
int regcache_read(struct regmap *map,
|
|
unsigned int reg, unsigned int *value);
|
|
int regcache_write(struct regmap *map,
|
|
unsigned int reg, unsigned int value);
|
|
int regcache_sync(struct regmap *map);
|
|
|
|
unsigned int regcache_get_val(const void *base, unsigned int idx,
|
|
unsigned int word_size);
|
|
bool regcache_set_val(void *base, unsigned int idx,
|
|
unsigned int val, unsigned int word_size);
|
|
int regcache_lookup_reg(struct regmap *map, unsigned int reg);
|
|
|
|
extern struct regcache_ops regcache_rbtree_ops;
|
|
extern struct regcache_ops regcache_lzo_ops;
|
|
|
|
#endif
|