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b83a313b MB |
1 | #ifndef __LINUX_REGMAP_H |
2 | #define __LINUX_REGMAP_H | |
3 | ||
4 | /* | |
5 | * Register map access API | |
6 | * | |
7 | * Copyright 2011 Wolfson Microelectronics plc | |
8 | * | |
9 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
b83a313b | 16 | #include <linux/list.h> |
6863ca62 | 17 | #include <linux/rbtree.h> |
b83a313b | 18 | |
de477254 | 19 | struct module; |
313162d0 | 20 | struct device; |
9943fa30 | 21 | struct i2c_client; |
90f790d2 | 22 | struct irq_domain; |
a676f083 | 23 | struct spi_device; |
b83d2ff0 | 24 | struct regmap; |
6863ca62 | 25 | struct regmap_range_cfg; |
9943fa30 | 26 | |
9fabe24e DP |
27 | /* An enum of all the supported cache types */ |
28 | enum regcache_type { | |
29 | REGCACHE_NONE, | |
28644c80 | 30 | REGCACHE_RBTREE, |
50b776fc | 31 | REGCACHE_COMPRESSED |
9fabe24e DP |
32 | }; |
33 | ||
bd20eb54 MB |
34 | /** |
35 | * Default value for a register. We use an array of structs rather | |
36 | * than a simple array as many modern devices have very sparse | |
37 | * register maps. | |
38 | * | |
39 | * @reg: Register address. | |
40 | * @def: Register default value. | |
41 | */ | |
42 | struct reg_default { | |
43 | unsigned int reg; | |
44 | unsigned int def; | |
45 | }; | |
46 | ||
b83d2ff0 MB |
47 | #ifdef CONFIG_REGMAP |
48 | ||
141eba2e SW |
49 | enum regmap_endian { |
50 | /* Unspecified -> 0 -> Backwards compatible default */ | |
51 | REGMAP_ENDIAN_DEFAULT = 0, | |
52 | REGMAP_ENDIAN_BIG, | |
53 | REGMAP_ENDIAN_LITTLE, | |
54 | REGMAP_ENDIAN_NATIVE, | |
55 | }; | |
56 | ||
76aad392 DC |
57 | /** |
58 | * A register range, used for access related checks | |
59 | * (readable/writeable/volatile/precious checks) | |
60 | * | |
61 | * @range_min: address of first register | |
62 | * @range_max: address of last register | |
63 | */ | |
64 | struct regmap_range { | |
65 | unsigned int range_min; | |
66 | unsigned int range_max; | |
67 | }; | |
68 | ||
69 | /* | |
70 | * A table of ranges including some yes ranges and some no ranges. | |
71 | * If a register belongs to a no_range, the corresponding check function | |
72 | * will return false. If a register belongs to a yes range, the corresponding | |
73 | * check function will return true. "no_ranges" are searched first. | |
74 | * | |
75 | * @yes_ranges : pointer to an array of regmap ranges used as "yes ranges" | |
76 | * @n_yes_ranges: size of the above array | |
77 | * @no_ranges: pointer to an array of regmap ranges used as "no ranges" | |
78 | * @n_no_ranges: size of the above array | |
79 | */ | |
80 | struct regmap_access_table { | |
81 | const struct regmap_range *yes_ranges; | |
82 | unsigned int n_yes_ranges; | |
83 | const struct regmap_range *no_ranges; | |
84 | unsigned int n_no_ranges; | |
85 | }; | |
86 | ||
0d4529c5 DC |
87 | typedef void (*regmap_lock)(void *); |
88 | typedef void (*regmap_unlock)(void *); | |
89 | ||
dd898b20 MB |
90 | /** |
91 | * Configuration for the register map of a device. | |
92 | * | |
d3c242e1 SW |
93 | * @name: Optional name of the regmap. Useful when a device has multiple |
94 | * register regions. | |
95 | * | |
dd898b20 | 96 | * @reg_bits: Number of bits in a register address, mandatory. |
f01ee60f SW |
97 | * @reg_stride: The register address stride. Valid register addresses are a |
98 | * multiple of this value. If set to 0, a value of 1 will be | |
99 | * used. | |
82159ba8 | 100 | * @pad_bits: Number of bits of padding between register and value. |
dd898b20 | 101 | * @val_bits: Number of bits in a register value, mandatory. |
2e2ae66d | 102 | * |
3566cc9d | 103 | * @writeable_reg: Optional callback returning true if the register |
76aad392 DC |
104 | * can be written to. If this field is NULL but wr_table |
105 | * (see below) is not, the check is performed on such table | |
106 | * (a register is writeable if it belongs to one of the ranges | |
107 | * specified by wr_table). | |
3566cc9d | 108 | * @readable_reg: Optional callback returning true if the register |
76aad392 DC |
109 | * can be read from. If this field is NULL but rd_table |
110 | * (see below) is not, the check is performed on such table | |
111 | * (a register is readable if it belongs to one of the ranges | |
112 | * specified by rd_table). | |
3566cc9d | 113 | * @volatile_reg: Optional callback returning true if the register |
76aad392 DC |
114 | * value can't be cached. If this field is NULL but |
115 | * volatile_table (see below) is not, the check is performed on | |
116 | * such table (a register is volatile if it belongs to one of | |
117 | * the ranges specified by volatile_table). | |
3566cc9d | 118 | * @precious_reg: Optional callback returning true if the rgister |
76aad392 DC |
119 | * should not be read outside of a call from the driver |
120 | * (eg, a clear on read interrupt status register). If this | |
121 | * field is NULL but precious_table (see below) is not, the | |
122 | * check is performed on such table (a register is precious if | |
123 | * it belongs to one of the ranges specified by precious_table). | |
124 | * @lock: Optional lock callback (overrides regmap's default lock | |
125 | * function, based on spinlock or mutex). | |
126 | * @unlock: As above for unlocking. | |
127 | * @lock_arg: this field is passed as the only argument of lock/unlock | |
128 | * functions (ignored in case regular lock/unlock functions | |
129 | * are not overridden). | |
bd20eb54 MB |
130 | * |
131 | * @max_register: Optional, specifies the maximum valid register index. | |
76aad392 DC |
132 | * @wr_table: Optional, points to a struct regmap_access_table specifying |
133 | * valid ranges for write access. | |
134 | * @rd_table: As above, for read access. | |
135 | * @volatile_table: As above, for volatile registers. | |
136 | * @precious_table: As above, for precious registers. | |
bd20eb54 MB |
137 | * @reg_defaults: Power on reset values for registers (for use with |
138 | * register cache support). | |
139 | * @num_reg_defaults: Number of elements in reg_defaults. | |
6f306441 LPC |
140 | * |
141 | * @read_flag_mask: Mask to be set in the top byte of the register when doing | |
142 | * a read. | |
143 | * @write_flag_mask: Mask to be set in the top byte of the register when doing | |
144 | * a write. If both read_flag_mask and write_flag_mask are | |
145 | * empty the regmap_bus default masks are used. | |
2e33caf1 AJ |
146 | * @use_single_rw: If set, converts the bulk read and write operations into |
147 | * a series of single read and write operations. This is useful | |
148 | * for device that does not support bulk read and write. | |
9fabe24e DP |
149 | * |
150 | * @cache_type: The actual cache type. | |
151 | * @reg_defaults_raw: Power on reset values for registers (for use with | |
152 | * register cache support). | |
153 | * @num_reg_defaults_raw: Number of elements in reg_defaults_raw. | |
141eba2e SW |
154 | * @reg_format_endian: Endianness for formatted register addresses. If this is |
155 | * DEFAULT, the @reg_format_endian_default value from the | |
156 | * regmap bus is used. | |
157 | * @val_format_endian: Endianness for formatted register values. If this is | |
158 | * DEFAULT, the @reg_format_endian_default value from the | |
159 | * regmap bus is used. | |
6863ca62 KG |
160 | * |
161 | * @ranges: Array of configuration entries for virtual address ranges. | |
162 | * @num_ranges: Number of range configuration entries. | |
dd898b20 | 163 | */ |
b83a313b | 164 | struct regmap_config { |
d3c242e1 SW |
165 | const char *name; |
166 | ||
b83a313b | 167 | int reg_bits; |
f01ee60f | 168 | int reg_stride; |
82159ba8 | 169 | int pad_bits; |
b83a313b | 170 | int val_bits; |
2e2ae66d | 171 | |
2e2ae66d MB |
172 | bool (*writeable_reg)(struct device *dev, unsigned int reg); |
173 | bool (*readable_reg)(struct device *dev, unsigned int reg); | |
174 | bool (*volatile_reg)(struct device *dev, unsigned int reg); | |
18694886 | 175 | bool (*precious_reg)(struct device *dev, unsigned int reg); |
0d4529c5 DC |
176 | regmap_lock lock; |
177 | regmap_unlock unlock; | |
178 | void *lock_arg; | |
bd20eb54 MB |
179 | |
180 | unsigned int max_register; | |
76aad392 DC |
181 | const struct regmap_access_table *wr_table; |
182 | const struct regmap_access_table *rd_table; | |
183 | const struct regmap_access_table *volatile_table; | |
184 | const struct regmap_access_table *precious_table; | |
720e4616 | 185 | const struct reg_default *reg_defaults; |
9fabe24e DP |
186 | unsigned int num_reg_defaults; |
187 | enum regcache_type cache_type; | |
188 | const void *reg_defaults_raw; | |
189 | unsigned int num_reg_defaults_raw; | |
6f306441 LPC |
190 | |
191 | u8 read_flag_mask; | |
192 | u8 write_flag_mask; | |
2e33caf1 AJ |
193 | |
194 | bool use_single_rw; | |
141eba2e SW |
195 | |
196 | enum regmap_endian reg_format_endian; | |
197 | enum regmap_endian val_format_endian; | |
38e23194 | 198 | |
6863ca62 | 199 | const struct regmap_range_cfg *ranges; |
e3549cd0 | 200 | unsigned int num_ranges; |
6863ca62 KG |
201 | }; |
202 | ||
203 | /** | |
204 | * Configuration for indirectly accessed or paged registers. | |
205 | * Registers, mapped to this virtual range, are accessed in two steps: | |
206 | * 1. page selector register update; | |
207 | * 2. access through data window registers. | |
208 | * | |
d058bb49 MB |
209 | * @name: Descriptive name for diagnostics |
210 | * | |
6863ca62 KG |
211 | * @range_min: Address of the lowest register address in virtual range. |
212 | * @range_max: Address of the highest register in virtual range. | |
213 | * | |
214 | * @page_sel_reg: Register with selector field. | |
215 | * @page_sel_mask: Bit shift for selector value. | |
216 | * @page_sel_shift: Bit mask for selector value. | |
217 | * | |
218 | * @window_start: Address of first (lowest) register in data window. | |
219 | * @window_len: Number of registers in data window. | |
220 | */ | |
221 | struct regmap_range_cfg { | |
d058bb49 MB |
222 | const char *name; |
223 | ||
6863ca62 KG |
224 | /* Registers of virtual address range */ |
225 | unsigned int range_min; | |
226 | unsigned int range_max; | |
227 | ||
228 | /* Page selector for indirect addressing */ | |
229 | unsigned int selector_reg; | |
230 | unsigned int selector_mask; | |
231 | int selector_shift; | |
232 | ||
233 | /* Data window (per each page) */ | |
234 | unsigned int window_start; | |
235 | unsigned int window_len; | |
b83a313b MB |
236 | }; |
237 | ||
0135bbcc | 238 | typedef int (*regmap_hw_write)(void *context, const void *data, |
b83a313b | 239 | size_t count); |
0135bbcc | 240 | typedef int (*regmap_hw_gather_write)(void *context, |
b83a313b MB |
241 | const void *reg, size_t reg_len, |
242 | const void *val, size_t val_len); | |
0135bbcc | 243 | typedef int (*regmap_hw_read)(void *context, |
b83a313b MB |
244 | const void *reg_buf, size_t reg_size, |
245 | void *val_buf, size_t val_size); | |
0135bbcc | 246 | typedef void (*regmap_hw_free_context)(void *context); |
b83a313b MB |
247 | |
248 | /** | |
249 | * Description of a hardware bus for the register map infrastructure. | |
250 | * | |
bacdbe07 | 251 | * @fast_io: Register IO is fast. Use a spinlock instead of a mutex |
0d4529c5 DC |
252 | * to perform locking. This field is ignored if custom lock/unlock |
253 | * functions are used (see fields lock/unlock of | |
254 | * struct regmap_config). | |
b83a313b MB |
255 | * @write: Write operation. |
256 | * @gather_write: Write operation with split register/value, return -ENOTSUPP | |
257 | * if not implemented on a given device. | |
258 | * @read: Read operation. Data is returned in the buffer used to transmit | |
259 | * data. | |
b83a313b MB |
260 | * @read_flag_mask: Mask to be set in the top byte of the register when doing |
261 | * a read. | |
141eba2e SW |
262 | * @reg_format_endian_default: Default endianness for formatted register |
263 | * addresses. Used when the regmap_config specifies DEFAULT. If this is | |
264 | * DEFAULT, BIG is assumed. | |
265 | * @val_format_endian_default: Default endianness for formatted register | |
266 | * values. Used when the regmap_config specifies DEFAULT. If this is | |
267 | * DEFAULT, BIG is assumed. | |
b83a313b MB |
268 | */ |
269 | struct regmap_bus { | |
bacdbe07 | 270 | bool fast_io; |
b83a313b MB |
271 | regmap_hw_write write; |
272 | regmap_hw_gather_write gather_write; | |
273 | regmap_hw_read read; | |
0135bbcc | 274 | regmap_hw_free_context free_context; |
b83a313b | 275 | u8 read_flag_mask; |
141eba2e SW |
276 | enum regmap_endian reg_format_endian_default; |
277 | enum regmap_endian val_format_endian_default; | |
b83a313b MB |
278 | }; |
279 | ||
280 | struct regmap *regmap_init(struct device *dev, | |
281 | const struct regmap_bus *bus, | |
0135bbcc | 282 | void *bus_context, |
b83a313b | 283 | const struct regmap_config *config); |
9943fa30 MB |
284 | struct regmap *regmap_init_i2c(struct i2c_client *i2c, |
285 | const struct regmap_config *config); | |
a676f083 MB |
286 | struct regmap *regmap_init_spi(struct spi_device *dev, |
287 | const struct regmap_config *config); | |
45f5ff81 SW |
288 | struct regmap *regmap_init_mmio(struct device *dev, |
289 | void __iomem *regs, | |
290 | const struct regmap_config *config); | |
a676f083 | 291 | |
c0eb4676 MB |
292 | struct regmap *devm_regmap_init(struct device *dev, |
293 | const struct regmap_bus *bus, | |
0135bbcc | 294 | void *bus_context, |
c0eb4676 MB |
295 | const struct regmap_config *config); |
296 | struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c, | |
297 | const struct regmap_config *config); | |
298 | struct regmap *devm_regmap_init_spi(struct spi_device *dev, | |
299 | const struct regmap_config *config); | |
45f5ff81 SW |
300 | struct regmap *devm_regmap_init_mmio(struct device *dev, |
301 | void __iomem *regs, | |
302 | const struct regmap_config *config); | |
c0eb4676 | 303 | |
b83a313b | 304 | void regmap_exit(struct regmap *map); |
bf315173 MB |
305 | int regmap_reinit_cache(struct regmap *map, |
306 | const struct regmap_config *config); | |
72b39f6f | 307 | struct regmap *dev_get_regmap(struct device *dev, const char *name); |
b83a313b MB |
308 | int regmap_write(struct regmap *map, unsigned int reg, unsigned int val); |
309 | int regmap_raw_write(struct regmap *map, unsigned int reg, | |
310 | const void *val, size_t val_len); | |
8eaeb219 LD |
311 | int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val, |
312 | size_t val_count); | |
b83a313b MB |
313 | int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val); |
314 | int regmap_raw_read(struct regmap *map, unsigned int reg, | |
315 | void *val, size_t val_len); | |
316 | int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, | |
317 | size_t val_count); | |
318 | int regmap_update_bits(struct regmap *map, unsigned int reg, | |
319 | unsigned int mask, unsigned int val); | |
018690d3 MB |
320 | int regmap_update_bits_check(struct regmap *map, unsigned int reg, |
321 | unsigned int mask, unsigned int val, | |
322 | bool *change); | |
a6539c32 | 323 | int regmap_get_val_bytes(struct regmap *map); |
b83a313b | 324 | |
39a58439 | 325 | int regcache_sync(struct regmap *map); |
4d4cfd16 MB |
326 | int regcache_sync_region(struct regmap *map, unsigned int min, |
327 | unsigned int max); | |
92afb286 | 328 | void regcache_cache_only(struct regmap *map, bool enable); |
6eb0f5e0 | 329 | void regcache_cache_bypass(struct regmap *map, bool enable); |
8ae0d7e8 | 330 | void regcache_mark_dirty(struct regmap *map); |
92afb286 | 331 | |
22f0d90a MB |
332 | int regmap_register_patch(struct regmap *map, const struct reg_default *regs, |
333 | int num_regs); | |
334 | ||
76aad392 DC |
335 | static inline bool regmap_reg_in_range(unsigned int reg, |
336 | const struct regmap_range *range) | |
337 | { | |
338 | return reg >= range->range_min && reg <= range->range_max; | |
339 | } | |
340 | ||
341 | bool regmap_reg_in_ranges(unsigned int reg, | |
342 | const struct regmap_range *ranges, | |
343 | unsigned int nranges); | |
344 | ||
f8beab2b MB |
345 | /** |
346 | * Description of an IRQ for the generic regmap irq_chip. | |
347 | * | |
348 | * @reg_offset: Offset of the status/mask register within the bank | |
349 | * @mask: Mask used to flag/control the register. | |
350 | */ | |
351 | struct regmap_irq { | |
352 | unsigned int reg_offset; | |
353 | unsigned int mask; | |
354 | }; | |
355 | ||
356 | /** | |
357 | * Description of a generic regmap irq_chip. This is not intended to | |
358 | * handle every possible interrupt controller, but it should handle a | |
359 | * substantial proportion of those that are found in the wild. | |
360 | * | |
361 | * @name: Descriptive name for IRQ controller. | |
362 | * | |
363 | * @status_base: Base status register address. | |
364 | * @mask_base: Base mask register address. | |
365 | * @ack_base: Base ack address. If zero then the chip is clear on read. | |
a43fd50d | 366 | * @wake_base: Base address for wake enables. If zero unsupported. |
022f926a | 367 | * @irq_reg_stride: Stride to use for chips where registers are not contiguous. |
0c00c50b | 368 | * @runtime_pm: Hold a runtime PM lock on the device when accessing it. |
f8beab2b MB |
369 | * |
370 | * @num_regs: Number of registers in each control bank. | |
371 | * @irqs: Descriptors for individual IRQs. Interrupt numbers are | |
372 | * assigned based on the index in the array of the interrupt. | |
373 | * @num_irqs: Number of descriptors. | |
374 | */ | |
375 | struct regmap_irq_chip { | |
376 | const char *name; | |
377 | ||
378 | unsigned int status_base; | |
379 | unsigned int mask_base; | |
380 | unsigned int ack_base; | |
a43fd50d | 381 | unsigned int wake_base; |
022f926a | 382 | unsigned int irq_reg_stride; |
36ac914b | 383 | unsigned int mask_invert; |
0c00c50b | 384 | bool runtime_pm; |
f8beab2b MB |
385 | |
386 | int num_regs; | |
387 | ||
388 | const struct regmap_irq *irqs; | |
389 | int num_irqs; | |
390 | }; | |
391 | ||
392 | struct regmap_irq_chip_data; | |
393 | ||
394 | int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, | |
b026ddbb | 395 | int irq_base, const struct regmap_irq_chip *chip, |
f8beab2b MB |
396 | struct regmap_irq_chip_data **data); |
397 | void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data); | |
209a6006 | 398 | int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data); |
4af8be67 | 399 | int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq); |
90f790d2 | 400 | struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data); |
92afb286 | 401 | |
9cde5fcd MB |
402 | #else |
403 | ||
404 | /* | |
405 | * These stubs should only ever be called by generic code which has | |
406 | * regmap based facilities, if they ever get called at runtime | |
407 | * something is going wrong and something probably needs to select | |
408 | * REGMAP. | |
409 | */ | |
410 | ||
411 | static inline int regmap_write(struct regmap *map, unsigned int reg, | |
412 | unsigned int val) | |
413 | { | |
414 | WARN_ONCE(1, "regmap API is disabled"); | |
415 | return -EINVAL; | |
416 | } | |
417 | ||
418 | static inline int regmap_raw_write(struct regmap *map, unsigned int reg, | |
419 | const void *val, size_t val_len) | |
420 | { | |
421 | WARN_ONCE(1, "regmap API is disabled"); | |
422 | return -EINVAL; | |
423 | } | |
424 | ||
425 | static inline int regmap_bulk_write(struct regmap *map, unsigned int reg, | |
426 | const void *val, size_t val_count) | |
427 | { | |
428 | WARN_ONCE(1, "regmap API is disabled"); | |
429 | return -EINVAL; | |
430 | } | |
431 | ||
432 | static inline int regmap_read(struct regmap *map, unsigned int reg, | |
433 | unsigned int *val) | |
434 | { | |
435 | WARN_ONCE(1, "regmap API is disabled"); | |
436 | return -EINVAL; | |
437 | } | |
438 | ||
439 | static inline int regmap_raw_read(struct regmap *map, unsigned int reg, | |
440 | void *val, size_t val_len) | |
441 | { | |
442 | WARN_ONCE(1, "regmap API is disabled"); | |
443 | return -EINVAL; | |
444 | } | |
445 | ||
446 | static inline int regmap_bulk_read(struct regmap *map, unsigned int reg, | |
447 | void *val, size_t val_count) | |
448 | { | |
449 | WARN_ONCE(1, "regmap API is disabled"); | |
450 | return -EINVAL; | |
451 | } | |
452 | ||
453 | static inline int regmap_update_bits(struct regmap *map, unsigned int reg, | |
454 | unsigned int mask, unsigned int val) | |
455 | { | |
456 | WARN_ONCE(1, "regmap API is disabled"); | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | static inline int regmap_update_bits_check(struct regmap *map, | |
461 | unsigned int reg, | |
462 | unsigned int mask, unsigned int val, | |
463 | bool *change) | |
464 | { | |
465 | WARN_ONCE(1, "regmap API is disabled"); | |
466 | return -EINVAL; | |
467 | } | |
468 | ||
469 | static inline int regmap_get_val_bytes(struct regmap *map) | |
470 | { | |
471 | WARN_ONCE(1, "regmap API is disabled"); | |
472 | return -EINVAL; | |
473 | } | |
474 | ||
475 | static inline int regcache_sync(struct regmap *map) | |
476 | { | |
477 | WARN_ONCE(1, "regmap API is disabled"); | |
478 | return -EINVAL; | |
479 | } | |
480 | ||
a313f9f5 MB |
481 | static inline int regcache_sync_region(struct regmap *map, unsigned int min, |
482 | unsigned int max) | |
483 | { | |
484 | WARN_ONCE(1, "regmap API is disabled"); | |
485 | return -EINVAL; | |
486 | } | |
487 | ||
9cde5fcd MB |
488 | static inline void regcache_cache_only(struct regmap *map, bool enable) |
489 | { | |
490 | WARN_ONCE(1, "regmap API is disabled"); | |
491 | } | |
492 | ||
493 | static inline void regcache_cache_bypass(struct regmap *map, bool enable) | |
494 | { | |
495 | WARN_ONCE(1, "regmap API is disabled"); | |
496 | } | |
497 | ||
498 | static inline void regcache_mark_dirty(struct regmap *map) | |
499 | { | |
500 | WARN_ONCE(1, "regmap API is disabled"); | |
501 | } | |
502 | ||
503 | static inline int regmap_register_patch(struct regmap *map, | |
504 | const struct reg_default *regs, | |
505 | int num_regs) | |
506 | { | |
507 | WARN_ONCE(1, "regmap API is disabled"); | |
508 | return -EINVAL; | |
509 | } | |
510 | ||
72b39f6f MB |
511 | static inline struct regmap *dev_get_regmap(struct device *dev, |
512 | const char *name) | |
513 | { | |
72b39f6f MB |
514 | return NULL; |
515 | } | |
516 | ||
9cde5fcd MB |
517 | #endif |
518 | ||
b83a313b | 519 | #endif |