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1 | /* |
2 | * Register map access API internal header | |
3 | * | |
4 | * Copyright 2011 Wolfson Microelectronics plc | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
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. | |
11 | */ | |
12 | ||
13 | #ifndef _REGMAP_INTERNAL_H | |
14 | #define _REGMAP_INTERNAL_H | |
15 | ||
16 | #include <linux/regmap.h> | |
31244e39 | 17 | #include <linux/fs.h> |
93de9124 MB |
18 | |
19 | struct regmap; | |
9fabe24e | 20 | struct regcache_ops; |
93de9124 MB |
21 | |
22 | struct regmap_format { | |
23 | size_t buf_size; | |
24 | size_t reg_bytes; | |
82159ba8 | 25 | size_t pad_bytes; |
93de9124 MB |
26 | size_t val_bytes; |
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); | |
32 | }; | |
33 | ||
bacdbe07 SW |
34 | typedef void (*regmap_lock)(struct regmap *map); |
35 | typedef void (*regmap_unlock)(struct regmap *map); | |
36 | ||
93de9124 | 37 | struct regmap { |
bacdbe07 SW |
38 | struct mutex mutex; |
39 | spinlock_t spinlock; | |
40 | regmap_lock lock; | |
41 | regmap_unlock unlock; | |
93de9124 MB |
42 | |
43 | struct device *dev; /* Device we do I/O on */ | |
44 | void *work_buf; /* Scratch buffer used to format I/O */ | |
45 | struct regmap_format format; /* Buffer format */ | |
46 | const struct regmap_bus *bus; | |
0135bbcc | 47 | void *bus_context; |
72b39f6f | 48 | const char *name; |
93de9124 | 49 | |
31244e39 MB |
50 | #ifdef CONFIG_DEBUG_FS |
51 | struct dentry *debugfs; | |
52 | #endif | |
53 | ||
93de9124 MB |
54 | unsigned int max_register; |
55 | bool (*writeable_reg)(struct device *dev, unsigned int reg); | |
56 | bool (*readable_reg)(struct device *dev, unsigned int reg); | |
57 | bool (*volatile_reg)(struct device *dev, unsigned int reg); | |
2efe1642 | 58 | bool (*precious_reg)(struct device *dev, unsigned int reg); |
6f306441 LPC |
59 | |
60 | u8 read_flag_mask; | |
61 | u8 write_flag_mask; | |
9fabe24e DP |
62 | |
63 | /* regcache specific members */ | |
64 | const struct regcache_ops *cache_ops; | |
65 | enum regcache_type cache_type; | |
66 | ||
67 | /* number of bytes in reg_defaults_raw */ | |
68 | unsigned int cache_size_raw; | |
69 | /* number of bytes per word in reg_defaults_raw */ | |
70 | unsigned int cache_word_size; | |
71 | /* number of entries in reg_defaults */ | |
72 | unsigned int num_reg_defaults; | |
73 | /* number of entries in reg_defaults_raw */ | |
74 | unsigned int num_reg_defaults_raw; | |
75 | ||
76 | /* if set, only the cache is modified not the HW */ | |
847fb6fd | 77 | u32 cache_only; |
9fabe24e | 78 | /* if set, only the HW is modified not the cache */ |
847fb6fd | 79 | u32 cache_bypass; |
9fabe24e | 80 | /* if set, remember to free reg_defaults_raw */ |
847fb6fd | 81 | bool cache_free; |
9fabe24e DP |
82 | |
83 | struct reg_default *reg_defaults; | |
84 | const void *reg_defaults_raw; | |
85 | void *cache; | |
847fb6fd | 86 | u32 cache_dirty; |
22f0d90a MB |
87 | |
88 | struct reg_default *patch; | |
89 | int patch_regs; | |
9fabe24e DP |
90 | }; |
91 | ||
92 | struct regcache_ops { | |
93 | const char *name; | |
94 | enum regcache_type type; | |
95 | int (*init)(struct regmap *map); | |
96 | int (*exit)(struct regmap *map); | |
97 | int (*read)(struct regmap *map, unsigned int reg, unsigned int *value); | |
98 | int (*write)(struct regmap *map, unsigned int reg, unsigned int value); | |
ac8d91c8 | 99 | int (*sync)(struct regmap *map, unsigned int min, unsigned int max); |
93de9124 MB |
100 | }; |
101 | ||
8de2f081 MB |
102 | bool regmap_writeable(struct regmap *map, unsigned int reg); |
103 | bool regmap_readable(struct regmap *map, unsigned int reg); | |
104 | bool regmap_volatile(struct regmap *map, unsigned int reg); | |
105 | bool regmap_precious(struct regmap *map, unsigned int reg); | |
106 | ||
4d2dc095 DP |
107 | int _regmap_write(struct regmap *map, unsigned int reg, |
108 | unsigned int val); | |
109 | ||
31244e39 MB |
110 | #ifdef CONFIG_DEBUG_FS |
111 | extern void regmap_debugfs_initcall(void); | |
112 | extern void regmap_debugfs_init(struct regmap *map); | |
113 | extern void regmap_debugfs_exit(struct regmap *map); | |
114 | #else | |
bbcf61ca LPC |
115 | static inline void regmap_debugfs_initcall(void) { } |
116 | static inline void regmap_debugfs_init(struct regmap *map) { } | |
117 | static inline void regmap_debugfs_exit(struct regmap *map) { } | |
31244e39 MB |
118 | #endif |
119 | ||
9fabe24e | 120 | /* regcache core declarations */ |
e5e3b8ab | 121 | int regcache_init(struct regmap *map, const struct regmap_config *config); |
9fabe24e DP |
122 | void regcache_exit(struct regmap *map); |
123 | int regcache_read(struct regmap *map, | |
124 | unsigned int reg, unsigned int *value); | |
125 | int regcache_write(struct regmap *map, | |
126 | unsigned int reg, unsigned int value); | |
127 | int regcache_sync(struct regmap *map); | |
128 | ||
129 | unsigned int regcache_get_val(const void *base, unsigned int idx, | |
130 | unsigned int word_size); | |
131 | bool regcache_set_val(void *base, unsigned int idx, | |
132 | unsigned int val, unsigned int word_size); | |
133 | int regcache_lookup_reg(struct regmap *map, unsigned int reg); | |
9fabe24e | 134 | |
28644c80 | 135 | extern struct regcache_ops regcache_rbtree_ops; |
2cbbb579 DP |
136 | extern struct regcache_ops regcache_lzo_ops; |
137 | ||
93de9124 | 138 | #endif |