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10#ifndef _REGMAP_INTERNAL_H
11#define _REGMAP_INTERNAL_H
12
13#include <linux/device.h>
14#include <linux/regmap.h>
15#include <linux/fs.h>
16#include <linux/list.h>
17#include <linux/wait.h>
18
19struct regmap;
20struct regcache_ops;
21
22struct regmap_debugfs_off_cache {
23 struct list_head list;
24 off_t min;
25 off_t max;
26 unsigned int base_reg;
27 unsigned int max_reg;
28};
29
30struct regmap_format {
31 size_t buf_size;
32 size_t reg_bytes;
33 size_t pad_bytes;
34 size_t val_bytes;
35 void (*format_write)(struct regmap *map,
36 unsigned int reg, unsigned int val);
37 void (*format_reg)(void *buf, unsigned int reg, unsigned int shift);
38 void (*format_val)(void *buf, unsigned int val, unsigned int shift);
39 unsigned int (*parse_val)(const void *buf);
40 void (*parse_inplace)(void *buf);
41};
42
43struct regmap_async {
44 struct list_head list;
45 struct regmap *map;
46 void *work_buf;
47};
48
49struct regmap {
50 union {
51 struct mutex mutex;
52 struct {
53 spinlock_t spinlock;
54 unsigned long spinlock_flags;
55 };
56 };
57 regmap_lock lock;
58 regmap_unlock unlock;
59 void *lock_arg;
60 gfp_t alloc_flags;
61
62 struct device *dev;
63 void *work_buf;
64 struct regmap_format format;
65 const struct regmap_bus *bus;
66 void *bus_context;
67 const char *name;
68
69 bool async;
70 spinlock_t async_lock;
71 wait_queue_head_t async_waitq;
72 struct list_head async_list;
73 struct list_head async_free;
74 int async_ret;
75
76#ifdef CONFIG_DEBUG_FS
77 bool debugfs_disable;
78 struct dentry *debugfs;
79 const char *debugfs_name;
80
81 unsigned int debugfs_reg_len;
82 unsigned int debugfs_val_len;
83 unsigned int debugfs_tot_len;
84
85 struct list_head debugfs_off_cache;
86 struct mutex cache_lock;
87#endif
88
89 unsigned int max_register;
90 bool (*writeable_reg)(struct device *dev, unsigned int reg);
91 bool (*readable_reg)(struct device *dev, unsigned int reg);
92 bool (*volatile_reg)(struct device *dev, unsigned int reg);
93 bool (*precious_reg)(struct device *dev, unsigned int reg);
94 bool (*writeable_noinc_reg)(struct device *dev, unsigned int reg);
95 bool (*readable_noinc_reg)(struct device *dev, unsigned int reg);
96 const struct regmap_access_table *wr_table;
97 const struct regmap_access_table *rd_table;
98 const struct regmap_access_table *volatile_table;
99 const struct regmap_access_table *precious_table;
100 const struct regmap_access_table *wr_noinc_table;
101 const struct regmap_access_table *rd_noinc_table;
102
103 int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
104 int (*reg_write)(void *context, unsigned int reg, unsigned int val);
105 int (*reg_update_bits)(void *context, unsigned int reg,
106 unsigned int mask, unsigned int val);
107
108 bool defer_caching;
109
110 unsigned long read_flag_mask;
111 unsigned long write_flag_mask;
112
113
114 int reg_shift;
115 int reg_stride;
116 int reg_stride_order;
117
118
119 const struct regcache_ops *cache_ops;
120 enum regcache_type cache_type;
121
122
123 unsigned int cache_size_raw;
124
125 unsigned int cache_word_size;
126
127 unsigned int num_reg_defaults;
128
129 unsigned int num_reg_defaults_raw;
130
131
132 bool cache_only;
133
134 bool cache_bypass;
135
136 bool cache_free;
137
138 struct reg_default *reg_defaults;
139 const void *reg_defaults_raw;
140 void *cache;
141
142 bool cache_dirty;
143
144 bool no_sync_defaults;
145
146 struct reg_sequence *patch;
147 int patch_regs;
148
149
150 bool use_single_read;
151
152 bool use_single_write;
153
154 bool can_multi_write;
155
156
157 size_t max_raw_read;
158 size_t max_raw_write;
159
160 struct rb_root range_tree;
161 void *selector_work_buf;
162
163 struct hwspinlock *hwlock;
164
165
166 bool can_sleep;
167};
168
169struct regcache_ops {
170 const char *name;
171 enum regcache_type type;
172 int (*init)(struct regmap *map);
173 int (*exit)(struct regmap *map);
174#ifdef CONFIG_DEBUG_FS
175 void (*debugfs_init)(struct regmap *map);
176#endif
177 int (*read)(struct regmap *map, unsigned int reg, unsigned int *value);
178 int (*write)(struct regmap *map, unsigned int reg, unsigned int value);
179 int (*sync)(struct regmap *map, unsigned int min, unsigned int max);
180 int (*drop)(struct regmap *map, unsigned int min, unsigned int max);
181};
182
183bool regmap_cached(struct regmap *map, unsigned int reg);
184bool regmap_writeable(struct regmap *map, unsigned int reg);
185bool regmap_readable(struct regmap *map, unsigned int reg);
186bool regmap_volatile(struct regmap *map, unsigned int reg);
187bool regmap_precious(struct regmap *map, unsigned int reg);
188bool regmap_writeable_noinc(struct regmap *map, unsigned int reg);
189bool regmap_readable_noinc(struct regmap *map, unsigned int reg);
190
191int _regmap_write(struct regmap *map, unsigned int reg,
192 unsigned int val);
193
194struct regmap_range_node {
195 struct rb_node node;
196 const char *name;
197 struct regmap *map;
198
199 unsigned int range_min;
200 unsigned int range_max;
201
202 unsigned int selector_reg;
203 unsigned int selector_mask;
204 int selector_shift;
205
206 unsigned int window_start;
207 unsigned int window_len;
208};
209
210struct regmap_field {
211 struct regmap *regmap;
212 unsigned int mask;
213
214 unsigned int shift;
215 unsigned int reg;
216
217 unsigned int id_size;
218 unsigned int id_offset;
219};
220
221#ifdef CONFIG_DEBUG_FS
222extern void regmap_debugfs_initcall(void);
223extern void regmap_debugfs_init(struct regmap *map);
224extern void regmap_debugfs_exit(struct regmap *map);
225
226static inline void regmap_debugfs_disable(struct regmap *map)
227{
228 map->debugfs_disable = true;
229}
230
231#else
232static inline void regmap_debugfs_initcall(void) { }
233static inline void regmap_debugfs_init(struct regmap *map) { }
234static inline void regmap_debugfs_exit(struct regmap *map) { }
235static inline void regmap_debugfs_disable(struct regmap *map) { }
236#endif
237
238
239int regcache_init(struct regmap *map, const struct regmap_config *config);
240void regcache_exit(struct regmap *map);
241int regcache_read(struct regmap *map,
242 unsigned int reg, unsigned int *value);
243int regcache_write(struct regmap *map,
244 unsigned int reg, unsigned int value);
245int regcache_sync(struct regmap *map);
246int regcache_sync_block(struct regmap *map, void *block,
247 unsigned long *cache_present,
248 unsigned int block_base, unsigned int start,
249 unsigned int end);
250
251static inline const void *regcache_get_val_addr(struct regmap *map,
252 const void *base,
253 unsigned int idx)
254{
255 return base + (map->cache_word_size * idx);
256}
257
258unsigned int regcache_get_val(struct regmap *map, const void *base,
259 unsigned int idx);
260bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
261 unsigned int val);
262int regcache_lookup_reg(struct regmap *map, unsigned int reg);
263
264int _regmap_raw_write(struct regmap *map, unsigned int reg,
265 const void *val, size_t val_len, bool noinc);
266
267void regmap_async_complete_cb(struct regmap_async *async, int ret);
268
269enum regmap_endian regmap_get_val_endian(struct device *dev,
270 const struct regmap_bus *bus,
271 const struct regmap_config *config);
272
273extern struct regcache_ops regcache_rbtree_ops;
274extern struct regcache_ops regcache_lzo_ops;
275extern struct regcache_ops regcache_flat_ops;
276
277static inline const char *regmap_name(const struct regmap *map)
278{
279 if (map->dev)
280 return dev_name(map->dev);
281
282 return map->name;
283}
284
285static inline unsigned int regmap_get_offset(const struct regmap *map,
286 unsigned int index)
287{
288 if (map->reg_stride_order >= 0)
289 return index << map->reg_stride_order;
290 else
291 return index * map->reg_stride;
292}
293
294static inline unsigned int regcache_get_index_by_order(const struct regmap *map,
295 unsigned int reg)
296{
297 return reg >> map->reg_stride_order;
298}
299
300#endif
301