2 * Register map access API internal header
4 * Copyright 2011 Wolfson Microelectronics plc
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #ifndef _REGMAP_INTERNAL_H
14 #define _REGMAP_INTERNAL_H
16 #include <linux/regmap.h>
22 struct regmap_format
{
27 void (*format_write
)(struct regmap
*map
,
28 unsigned int reg
, unsigned int val
);
29 void (*format_reg
)(void *buf
, unsigned int reg
);
30 void (*format_val
)(void *buf
, unsigned int val
);
31 unsigned int (*parse_val
)(void *buf
);
37 struct device
*dev
; /* Device we do I/O on */
38 void *work_buf
; /* Scratch buffer used to format I/O */
39 struct regmap_format format
; /* Buffer format */
40 const struct regmap_bus
*bus
;
42 #ifdef CONFIG_DEBUG_FS
43 struct dentry
*debugfs
;
44 const char *debugfs_name
;
47 unsigned int max_register
;
48 bool (*writeable_reg
)(struct device
*dev
, unsigned int reg
);
49 bool (*readable_reg
)(struct device
*dev
, unsigned int reg
);
50 bool (*volatile_reg
)(struct device
*dev
, unsigned int reg
);
51 bool (*precious_reg
)(struct device
*dev
, unsigned int reg
);
56 /* regcache specific members */
57 const struct regcache_ops
*cache_ops
;
58 enum regcache_type cache_type
;
60 /* number of bytes in reg_defaults_raw */
61 unsigned int cache_size_raw
;
62 /* number of bytes per word in reg_defaults_raw */
63 unsigned int cache_word_size
;
64 /* number of entries in reg_defaults */
65 unsigned int num_reg_defaults
;
66 /* number of entries in reg_defaults_raw */
67 unsigned int num_reg_defaults_raw
;
69 /* if set, only the cache is modified not the HW */
71 /* if set, only the HW is modified not the cache */
73 /* if set, remember to free reg_defaults_raw */
76 struct reg_default
*reg_defaults
;
77 const void *reg_defaults_raw
;
81 struct reg_default
*patch
;
87 enum regcache_type type
;
88 int (*init
)(struct regmap
*map
);
89 int (*exit
)(struct regmap
*map
);
90 int (*read
)(struct regmap
*map
, unsigned int reg
, unsigned int *value
);
91 int (*write
)(struct regmap
*map
, unsigned int reg
, unsigned int value
);
92 int (*sync
)(struct regmap
*map
, unsigned int min
, unsigned int max
);
95 bool regmap_writeable(struct regmap
*map
, unsigned int reg
);
96 bool regmap_readable(struct regmap
*map
, unsigned int reg
);
97 bool regmap_volatile(struct regmap
*map
, unsigned int reg
);
98 bool regmap_precious(struct regmap
*map
, unsigned int reg
);
100 int _regmap_write(struct regmap
*map
, unsigned int reg
,
103 #ifdef CONFIG_DEBUG_FS
104 extern void regmap_debugfs_initcall(void);
105 extern void regmap_debugfs_init(struct regmap
*map
, const char *name
);
106 extern void regmap_debugfs_exit(struct regmap
*map
);
108 static inline void regmap_debugfs_initcall(void) { }
109 static inline void regmap_debugfs_init(struct regmap
*map
, const char *name
) { }
110 static inline void regmap_debugfs_exit(struct regmap
*map
) { }
113 /* regcache core declarations */
114 int regcache_init(struct regmap
*map
, const struct regmap_config
*config
);
115 void regcache_exit(struct regmap
*map
);
116 int regcache_read(struct regmap
*map
,
117 unsigned int reg
, unsigned int *value
);
118 int regcache_write(struct regmap
*map
,
119 unsigned int reg
, unsigned int value
);
120 int regcache_sync(struct regmap
*map
);
122 unsigned int regcache_get_val(const void *base
, unsigned int idx
,
123 unsigned int word_size
);
124 bool regcache_set_val(void *base
, unsigned int idx
,
125 unsigned int val
, unsigned int word_size
);
126 int regcache_lookup_reg(struct regmap
*map
, unsigned int reg
);
128 extern struct regcache_ops regcache_rbtree_ops
;
129 extern struct regcache_ops regcache_lzo_ops
;