include/linux/regmap.h

   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
  16 #include <linux/list.h>
  17 #include <linux/rbtree.h>
  18 #include <linux/err.h>
  19 #include <linux/bug.h>
  20
  21 struct module;
  22 struct device;
  23 struct i2c_client;
  24 struct irq_domain;
  25 struct spi_device;
  26 struct spmi_device;
  27 struct regmap;
  28 struct regmap_range_cfg;
  29 struct regmap_field;
  30 struct snd_ac97;
  31
  32 /* An enum of all the supported cache types */
  33 enum regcache_type {
  34         REGCACHE_NONE,
  35         REGCACHE_RBTREE,
  36         REGCACHE_COMPRESSED,
  37         REGCACHE_FLAT,
  38 };
  39
  40 /**
  41  * Default value for a register.  We use an array of structs rather
  42  * than a simple array as many modern devices have very sparse
  43  * register maps.
  44  *
  45  * @reg: Register address.
  46  * @def: Register default value.
  47  */
  48 struct reg_default {
  49         unsigned int reg;
  50         unsigned int def;
  51 };
  52
  53 #ifdef CONFIG_REGMAP
  54
  55 enum regmap_endian {
  56         /* Unspecified -> 0 -> Backwards compatible default */
  57         REGMAP_ENDIAN_DEFAULT = 0,
  58         REGMAP_ENDIAN_BIG,
  59         REGMAP_ENDIAN_LITTLE,
  60         REGMAP_ENDIAN_NATIVE,
  61 };
  62
  63 /**
  64  * A register range, used for access related checks
  65  * (readable/writeable/volatile/precious checks)
  66  *
  67  * @range_min: address of first register
  68  * @range_max: address of last register
  69  */
  70 struct regmap_range {
  71         unsigned int range_min;
  72         unsigned int range_max;
  73 };
  74
  75 #define regmap_reg_range(low, high) { .range_min = low, .range_max = high, }
  76
  77 /*
  78  * A table of ranges including some yes ranges and some no ranges.
  79  * If a register belongs to a no_range, the corresponding check function
  80  * will return false. If a register belongs to a yes range, the corresponding
  81  * check function will return true. "no_ranges" are searched first.
  82  *
  83  * @yes_ranges : pointer to an array of regmap ranges used as "yes ranges"
  84  * @n_yes_ranges: size of the above array
  85  * @no_ranges: pointer to an array of regmap ranges used as "no ranges"
  86  * @n_no_ranges: size of the above array
  87  */
  88 struct regmap_access_table {
  89         const struct regmap_range *yes_ranges;
  90         unsigned int n_yes_ranges;
  91         const struct regmap_range *no_ranges;
  92         unsigned int n_no_ranges;
  93 };
  94
  95 typedef void (*regmap_lock)(void *);
  96 typedef void (*regmap_unlock)(void *);
  97
  98 /**
  99  * Configuration for the register map of a device.
 100  *
 101  * @name: Optional name of the regmap. Useful when a device has multiple
 102  *        register regions.
 103  *
 104  * @reg_bits: Number of bits in a register address, mandatory.
 105  * @reg_stride: The register address stride. Valid register addresses are a
 106  *              multiple of this value. If set to 0, a value of 1 will be
 107  *              used.
 108  * @pad_bits: Number of bits of padding between register and value.
 109  * @val_bits: Number of bits in a register value, mandatory.
 110  *
 111  * @writeable_reg: Optional callback returning true if the register
 112  *                 can be written to. If this field is NULL but wr_table
 113  *                 (see below) is not, the check is performed on such table
 114  *                 (a register is writeable if it belongs to one of the ranges
 115  *                  specified by wr_table).
 116  * @readable_reg: Optional callback returning true if the register
 117  *                can be read from. If this field is NULL but rd_table
 118  *                 (see below) is not, the check is performed on such table
 119  *                 (a register is readable if it belongs to one of the ranges
 120  *                  specified by rd_table).
 121  * @volatile_reg: Optional callback returning true if the register
 122  *                value can't be cached. If this field is NULL but
 123  *                volatile_table (see below) is not, the check is performed on
 124  *                such table (a register is volatile if it belongs to one of
 125  *                the ranges specified by volatile_table).
 126  * @precious_reg: Optional callback returning true if the register
 127  *                should not be read outside of a call from the driver
 128  *                (e.g., a clear on read interrupt status register). If this
 129  *                field is NULL but precious_table (see below) is not, the
 130  *                check is performed on such table (a register is precious if
 131  *                it belongs to one of the ranges specified by precious_table).
 132  * @lock:         Optional lock callback (overrides regmap's default lock
 133  *                function, based on spinlock or mutex).
 134  * @unlock:       As above for unlocking.
 135  * @lock_arg:     this field is passed as the only argument of lock/unlock
 136  *                functions (ignored in case regular lock/unlock functions
 137  *                are not overridden).
 138  * @reg_read:     Optional callback that if filled will be used to perform
 139  *                all the reads from the registers. Should only be provided for
 140  *                devices whose read operation cannot be represented as a simple
 141  *                read operation on a bus such as SPI, I2C, etc. Most of the
 142  *                devices do not need this.
 143  * @reg_write:    Same as above for writing.
 144  * @fast_io:      Register IO is fast. Use a spinlock instead of a mutex
 145  *                to perform locking. This field is ignored if custom lock/unlock
 146  *                functions are used (see fields lock/unlock of struct regmap_config).
 147  *                This field is a duplicate of a similar file in
 148  *                'struct regmap_bus' and serves exact same purpose.
 149  *                 Use it only for "no-bus" cases.
 150  * @max_register: Optional, specifies the maximum valid register index.
 151  * @wr_table:     Optional, points to a struct regmap_access_table specifying
 152  *                valid ranges for write access.
 153  * @rd_table:     As above, for read access.
 154  * @volatile_table: As above, for volatile registers.
 155  * @precious_table: As above, for precious registers.
 156  * @reg_defaults: Power on reset values for registers (for use with
 157  *                register cache support).
 158  * @num_reg_defaults: Number of elements in reg_defaults.
 159  *
 160  * @read_flag_mask: Mask to be set in the top byte of the register when doing
 161  *                  a read.
 162  * @write_flag_mask: Mask to be set in the top byte of the register when doing
 163  *                   a write. If both read_flag_mask and write_flag_mask are
 164  *                   empty the regmap_bus default masks are used.
 165  * @use_single_rw: If set, converts the bulk read and write operations into
 166  *                  a series of single read and write operations. This is useful
 167  *                  for device that does not support bulk read and write.
 168  * @can_multi_write: If set, the device supports the multi write mode of bulk
 169  *                   write operations, if clear multi write requests will be
 170  *                   split into individual write operations
 171  *
 172  * @cache_type: The actual cache type.
 173  * @reg_defaults_raw: Power on reset values for registers (for use with
 174  *                    register cache support).
 175  * @num_reg_defaults_raw: Number of elements in reg_defaults_raw.
 176  * @reg_format_endian: Endianness for formatted register addresses. If this is
 177  *                     DEFAULT, the @reg_format_endian_default value from the
 178  *                     regmap bus is used.
 179  * @val_format_endian: Endianness for formatted register values. If this is
 180  *                     DEFAULT, the @reg_format_endian_default value from the
 181  *                     regmap bus is used.
 182  *
 183  * @ranges: Array of configuration entries for virtual address ranges.
 184  * @num_ranges: Number of range configuration entries.
 185  */
 186 struct regmap_config {
 187         const char *name;
 188
 189         int reg_bits;
 190         int reg_stride;
 191         int pad_bits;
 192         int val_bits;
 193
 194         bool (*writeable_reg)(struct device *dev, unsigned int reg);
 195         bool (*readable_reg)(struct device *dev, unsigned int reg);
 196         bool (*volatile_reg)(struct device *dev, unsigned int reg);
 197         bool (*precious_reg)(struct device *dev, unsigned int reg);
 198         regmap_lock lock;
 199         regmap_unlock unlock;
 200         void *lock_arg;
 201
 202         int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
 203         int (*reg_write)(void *context, unsigned int reg, unsigned int val);
 204
 205         bool fast_io;
 206
 207         unsigned int max_register;
 208         const struct regmap_access_table *wr_table;
 209         const struct regmap_access_table *rd_table;
 210         const struct regmap_access_table *volatile_table;
 211         const struct regmap_access_table *precious_table;
 212         const struct reg_default *reg_defaults;
 213         unsigned int num_reg_defaults;
 214         enum regcache_type cache_type;
 215         const void *reg_defaults_raw;
 216         unsigned int num_reg_defaults_raw;
 217
 218         u8 read_flag_mask;
 219         u8 write_flag_mask;
 220
 221         bool use_single_rw;
 222         bool can_multi_write;
 223
 224         enum regmap_endian reg_format_endian;
 225         enum regmap_endian val_format_endian;
 226
 227         const struct regmap_range_cfg *ranges;
 228         unsigned int num_ranges;
 229 };
 230
 231 /**
 232  * Configuration for indirectly accessed or paged registers.
 233  * Registers, mapped to this virtual range, are accessed in two steps:
 234  *     1. page selector register update;
 235  *     2. access through data window registers.
 236  *
 237  * @name: Descriptive name for diagnostics
 238  *
 239  * @range_min: Address of the lowest register address in virtual range.
 240  * @range_max: Address of the highest register in virtual range.
 241  *
 242  * @page_sel_reg: Register with selector field.
 243  * @page_sel_mask: Bit shift for selector value.
 244  * @page_sel_shift: Bit mask for selector value.
 245  *
 246  * @window_start: Address of first (lowest) register in data window.
 247  * @window_len: Number of registers in data window.
 248  */
 249 struct regmap_range_cfg {
 250         const char *name;
 251
 252         /* Registers of virtual address range */
 253         unsigned int range_min;
 254         unsigned int range_max;
 255
 256         /* Page selector for indirect addressing */
 257         unsigned int selector_reg;
 258         unsigned int selector_mask;
 259         int selector_shift;
 260
 261         /* Data window (per each page) */
 262         unsigned int window_start;
 263         unsigned int window_len;
 264 };
 265
 266 struct regmap_async;
 267
 268 typedef int (*regmap_hw_write)(void *context, const void *data,
 269                                size_t count);
 270 typedef int (*regmap_hw_gather_write)(void *context,
 271                                       const void *reg, size_t reg_len,
 272                                       const void *val, size_t val_len);
 273 typedef int (*regmap_hw_async_write)(void *context,
 274                                      const void *reg, size_t reg_len,
 275                                      const void *val, size_t val_len,
 276                                      struct regmap_async *async);
 277 typedef int (*regmap_hw_read)(void *context,
 278                               const void *reg_buf, size_t reg_size,
 279                               void *val_buf, size_t val_size);
 280 typedef int (*regmap_hw_reg_read)(void *context, unsigned int reg,
 281                                   unsigned int *val);
 282 typedef int (*regmap_hw_reg_write)(void *context, unsigned int reg,
 283                                    unsigned int val);
 284 typedef struct regmap_async *(*regmap_hw_async_alloc)(void);
 285 typedef void (*regmap_hw_free_context)(void *context);
 286
 287 /**
 288  * Description of a hardware bus for the register map infrastructure.
 289  *
 290  * @fast_io: Register IO is fast. Use a spinlock instead of a mutex
 291  *           to perform locking. This field is ignored if custom lock/unlock
 292  *           functions are used (see fields lock/unlock of
 293  *           struct regmap_config).
 294  * @write: Write operation.
 295  * @gather_write: Write operation with split register/value, return -ENOTSUPP
 296  *                if not implemented  on a given device.
 297  * @async_write: Write operation which completes asynchronously, optional and
 298  *               must serialise with respect to non-async I/O.
 299  * @read: Read operation.  Data is returned in the buffer used to transmit
 300  *         data.
 301  * @async_alloc: Allocate a regmap_async() structure.
 302  * @read_flag_mask: Mask to be set in the top byte of the register when doing
 303  *                  a read.
 304  * @reg_format_endian_default: Default endianness for formatted register
 305  *     addresses. Used when the regmap_config specifies DEFAULT. If this is
 306  *     DEFAULT, BIG is assumed.
 307  * @val_format_endian_default: Default endianness for formatted register
 308  *     values. Used when the regmap_config specifies DEFAULT. If this is
 309  *     DEFAULT, BIG is assumed.
 310  * @async_size: Size of struct used for async work.
 311  */
 312 struct regmap_bus {
 313         bool fast_io;
 314         regmap_hw_write write;
 315         regmap_hw_gather_write gather_write;
 316         regmap_hw_async_write async_write;
 317         regmap_hw_reg_write reg_write;
 318         regmap_hw_read read;
 319         regmap_hw_reg_read reg_read;
 320         regmap_hw_free_context free_context;
 321         regmap_hw_async_alloc async_alloc;
 322         u8 read_flag_mask;
 323         enum regmap_endian reg_format_endian_default;
 324         enum regmap_endian val_format_endian_default;
 325 };
 326
 327 struct regmap *regmap_init(struct device *dev,
 328                            const struct regmap_bus *bus,
 329                            void *bus_context,
 330                            const struct regmap_config *config);
 331 int regmap_attach_dev(struct device *dev, struct regmap *map,
 332                                  const struct regmap_config *config);
 333 struct regmap *regmap_init_i2c(struct i2c_client *i2c,
 334                                const struct regmap_config *config);
 335 struct regmap *regmap_init_spi(struct spi_device *dev,
 336                                const struct regmap_config *config);
 337 struct regmap *regmap_init_spmi_base(struct spmi_device *dev,
 338                                      const struct regmap_config *config);
 339 struct regmap *regmap_init_spmi_ext(struct spmi_device *dev,
 340                                     const struct regmap_config *config);
 341 struct regmap *regmap_init_mmio_clk(struct device *dev, const char *clk_id,
 342                                     void __iomem *regs,
 343                                     const struct regmap_config *config);
 344 struct regmap *regmap_init_ac97(struct snd_ac97 *ac97,
 345                                 const struct regmap_config *config);
 346
 347 struct regmap *devm_regmap_init(struct device *dev,
 348                                 const struct regmap_bus *bus,
 349                                 void *bus_context,
 350                                 const struct regmap_config *config);
 351 struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
 352                                     const struct regmap_config *config);
 353 struct regmap *devm_regmap_init_spi(struct spi_device *dev,
 354                                     const struct regmap_config *config);
 355 struct regmap *devm_regmap_init_spmi_base(struct spmi_device *dev,
 356                                           const struct regmap_config *config);
 357 struct regmap *devm_regmap_init_spmi_ext(struct spmi_device *dev,
 358                                          const struct regmap_config *config);
 359 struct regmap *devm_regmap_init_mmio_clk(struct device *dev, const char *clk_id,
 360                                          void __iomem *regs,
 361                                          const struct regmap_config *config);
 362 struct regmap *devm_regmap_init_ac97(struct snd_ac97 *ac97,
 363                                      const struct regmap_config *config);
 364
 365 bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 366
 367 /**
 368  * regmap_init_mmio(): Initialise register map
 369  *
 370  * @dev: Device that will be interacted with
 371  * @regs: Pointer to memory-mapped IO region
 372  * @config: Configuration for register map
 373  *
 374  * The return value will be an ERR_PTR() on error or a valid pointer to
 375  * a struct regmap.
 376  */
 377 static inline struct regmap *regmap_init_mmio(struct device *dev,
 378                                         void __iomem *regs,
 379                                         const struct regmap_config *config)
 380 {
 381         return regmap_init_mmio_clk(dev, NULL, regs, config);
 382 }
 383
 384 /**
 385  * devm_regmap_init_mmio(): Initialise managed register map
 386  *
 387  * @dev: Device that will be interacted with
 388  * @regs: Pointer to memory-mapped IO region
 389  * @config: Configuration for register map
 390  *
 391  * The return value will be an ERR_PTR() on error or a valid pointer
 392  * to a struct regmap.  The regmap will be automatically freed by the
 393  * device management code.
 394  */
 395 static inline struct regmap *devm_regmap_init_mmio(struct device *dev,
 396                                         void __iomem *regs,
 397                                         const struct regmap_config *config)
 398 {
 399         return devm_regmap_init_mmio_clk(dev, NULL, regs, config);
 400 }
 401
 402 void regmap_exit(struct regmap *map);
 403 int regmap_reinit_cache(struct regmap *map,
 404                         const struct regmap_config *config);
 405 struct regmap *dev_get_regmap(struct device *dev, const char *name);
 406 struct device *regmap_get_device(struct regmap *map);
 407 int regmap_write(struct regmap *map, unsigned int reg, unsigned int val);
 408 int regmap_write_async(struct regmap *map, unsigned int reg, unsigned int val);
 409 int regmap_raw_write(struct regmap *map, unsigned int reg,
 410                      const void *val, size_t val_len);
 411 int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
 412                         size_t val_count);
 413 int regmap_multi_reg_write(struct regmap *map, const struct reg_default *regs,
 414                         int num_regs);
 415 int regmap_multi_reg_write_bypassed(struct regmap *map,
 416                                     const struct reg_default *regs,
 417                                     int num_regs);
 418 int regmap_raw_write_async(struct regmap *map, unsigned int reg,
 419                            const void *val, size_t val_len);
 420 int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val);
 421 int regmap_raw_read(struct regmap *map, unsigned int reg,
 422                     void *val, size_t val_len);
 423 int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 424                      size_t val_count);
 425 int regmap_update_bits(struct regmap *map, unsigned int reg,
 426                        unsigned int mask, unsigned int val);
 427 int regmap_update_bits_async(struct regmap *map, unsigned int reg,
 428                              unsigned int mask, unsigned int val);
 429 int regmap_update_bits_check(struct regmap *map, unsigned int reg,
 430                              unsigned int mask, unsigned int val,
 431                              bool *change);
 432 int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
 433                                    unsigned int mask, unsigned int val,
 434                                    bool *change);
 435 int regmap_get_val_bytes(struct regmap *map);
 436 int regmap_async_complete(struct regmap *map);
 437 bool regmap_can_raw_write(struct regmap *map);
 438
 439 int regcache_sync(struct regmap *map);
 440 int regcache_sync_region(struct regmap *map, unsigned int min,
 441                          unsigned int max);
 442 int regcache_drop_region(struct regmap *map, unsigned int min,
 443                          unsigned int max);
 444 void regcache_cache_only(struct regmap *map, bool enable);
 445 void regcache_cache_bypass(struct regmap *map, bool enable);
 446 void regcache_mark_dirty(struct regmap *map);
 447
 448 bool regmap_check_range_table(struct regmap *map, unsigned int reg,
 449                               const struct regmap_access_table *table);
 450
 451 int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
 452                           int num_regs);
 453 int regmap_parse_val(struct regmap *map, const void *buf,
 454                                 unsigned int *val);
 455
 456 static inline bool regmap_reg_in_range(unsigned int reg,
 457                                        const struct regmap_range *range)
 458 {
 459         return reg >= range->range_min && reg <= range->range_max;
 460 }
 461
 462 bool regmap_reg_in_ranges(unsigned int reg,
 463                           const struct regmap_range *ranges,
 464                           unsigned int nranges);
 465
 466 /**
 467  * Description of an register field
 468  *
 469  * @reg: Offset of the register within the regmap bank
 470  * @lsb: lsb of the register field.
 471  * @msb: msb of the register field.
 472  * @id_size: port size if it has some ports
 473  * @id_offset: address offset for each ports
 474  */
 475 struct reg_field {
 476         unsigned int reg;
 477         unsigned int lsb;
 478         unsigned int msb;
 479         unsigned int id_size;
 480         unsigned int id_offset;
 481 };
 482
 483 #define REG_FIELD(_reg, _lsb, _msb) {           \
 484                                 .reg = _reg,    \
 485                                 .lsb = _lsb,    \
 486                                 .msb = _msb,    \
 487                                 }
 488
 489 struct regmap_field *regmap_field_alloc(struct regmap *regmap,
 490                 struct reg_field reg_field);
 491 void regmap_field_free(struct regmap_field *field);
 492
 493 struct regmap_field *devm_regmap_field_alloc(struct device *dev,
 494                 struct regmap *regmap, struct reg_field reg_field);
 495 void devm_regmap_field_free(struct device *dev, struct regmap_field *field);
 496
 497 int regmap_field_read(struct regmap_field *field, unsigned int *val);
 498 int regmap_field_write(struct regmap_field *field, unsigned int val);
 499 int regmap_field_update_bits(struct regmap_field *field,
 500                              unsigned int mask, unsigned int val);
 501
 502 int regmap_fields_write(struct regmap_field *field, unsigned int id,
 503                         unsigned int val);
 504 int regmap_fields_read(struct regmap_field *field, unsigned int id,
 505                        unsigned int *val);
 506 int regmap_fields_update_bits(struct regmap_field *field,  unsigned int id,
 507                               unsigned int mask, unsigned int val);
 508
 509 /**
 510  * Description of an IRQ for the generic regmap irq_chip.
 511  *
 512  * @reg_offset: Offset of the status/mask register within the bank
 513  * @mask:       Mask used to flag/control the register.
 514  */
 515 struct regmap_irq {
 516         unsigned int reg_offset;
 517         unsigned int mask;
 518 };
 519
 520 /**
 521  * Description of a generic regmap irq_chip.  This is not intended to
 522  * handle every possible interrupt controller, but it should handle a
 523  * substantial proportion of those that are found in the wild.
 524  *
 525  * @name:        Descriptive name for IRQ controller.
 526  *
 527  * @status_base: Base status register address.
 528  * @mask_base:   Base mask register address.
 529  * @ack_base:    Base ack address. If zero then the chip is clear on read.
 530  *               Using zero value is possible with @use_ack bit.
 531  * @wake_base:   Base address for wake enables.  If zero unsupported.
 532  * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
 533  * @init_ack_masked: Ack all masked interrupts once during initalization.
 534  * @mask_invert: Inverted mask register: cleared bits are masked out.
 535  * @use_ack:     Use @ack register even if it is zero.
 536  * @wake_invert: Inverted wake register: cleared bits are wake enabled.
 537  * @runtime_pm:  Hold a runtime PM lock on the device when accessing it.
 538  *
 539  * @num_regs:    Number of registers in each control bank.
 540  * @irqs:        Descriptors for individual IRQs.  Interrupt numbers are
 541  *               assigned based on the index in the array of the interrupt.
 542  * @num_irqs:    Number of descriptors.
 543  */
 544 struct regmap_irq_chip {
 545         const char *name;
 546
 547         unsigned int status_base;
 548         unsigned int mask_base;
 549         unsigned int ack_base;
 550         unsigned int wake_base;
 551         unsigned int irq_reg_stride;
 552         bool init_ack_masked:1;
 553         bool mask_invert:1;
 554         bool use_ack:1;
 555         bool wake_invert:1;
 556         bool runtime_pm:1;
 557
 558         int num_regs;
 559
 560         const struct regmap_irq *irqs;
 561         int num_irqs;
 562 };
 563
 564 struct regmap_irq_chip_data;
 565
 566 int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
 567                         int irq_base, const struct regmap_irq_chip *chip,
 568                         struct regmap_irq_chip_data **data);
 569 void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
 570 int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
 571 int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq);
 572 struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data);
 573
 574 #else
 575
 576 /*
 577  * These stubs should only ever be called by generic code which has
 578  * regmap based facilities, if they ever get called at runtime
 579  * something is going wrong and something probably needs to select
 580  * REGMAP.
 581  */
 582
 583 static inline int regmap_write(struct regmap *map, unsigned int reg,
 584                                unsigned int val)
 585 {
 586         WARN_ONCE(1, "regmap API is disabled");
 587         return -EINVAL;
 588 }
 589
 590 static inline int regmap_write_async(struct regmap *map, unsigned int reg,
 591                                      unsigned int val)
 592 {
 593         WARN_ONCE(1, "regmap API is disabled");
 594         return -EINVAL;
 595 }
 596
 597 static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
 598                                    const void *val, size_t val_len)
 599 {
 600         WARN_ONCE(1, "regmap API is disabled");
 601         return -EINVAL;
 602 }
 603
 604 static inline int regmap_raw_write_async(struct regmap *map, unsigned int reg,
 605                                          const void *val, size_t val_len)
 606 {
 607         WARN_ONCE(1, "regmap API is disabled");
 608         return -EINVAL;
 609 }
 610
 611 static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
 612                                     const void *val, size_t val_count)
 613 {
 614         WARN_ONCE(1, "regmap API is disabled");
 615         return -EINVAL;
 616 }
 617
 618 static inline int regmap_read(struct regmap *map, unsigned int reg,
 619                               unsigned int *val)
 620 {
 621         WARN_ONCE(1, "regmap API is disabled");
 622         return -EINVAL;
 623 }
 624
 625 static inline int regmap_raw_read(struct regmap *map, unsigned int reg,
 626                                   void *val, size_t val_len)
 627 {
 628         WARN_ONCE(1, "regmap API is disabled");
 629         return -EINVAL;
 630 }
 631
 632 static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
 633                                    void *val, size_t val_count)
 634 {
 635         WARN_ONCE(1, "regmap API is disabled");
 636         return -EINVAL;
 637 }
 638
 639 static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
 640                                      unsigned int mask, unsigned int val)
 641 {
 642         WARN_ONCE(1, "regmap API is disabled");
 643         return -EINVAL;
 644 }
 645
 646 static inline int regmap_update_bits_async(struct regmap *map,
 647                                            unsigned int reg,
 648                                            unsigned int mask, unsigned int val)
 649 {
 650         WARN_ONCE(1, "regmap API is disabled");
 651         return -EINVAL;
 652 }
 653
 654 static inline int regmap_update_bits_check(struct regmap *map,
 655                                            unsigned int reg,
 656                                            unsigned int mask, unsigned int val,
 657                                            bool *change)
 658 {
 659         WARN_ONCE(1, "regmap API is disabled");
 660         return -EINVAL;
 661 }
 662
 663 static inline int regmap_update_bits_check_async(struct regmap *map,
 664                                                  unsigned int reg,
 665                                                  unsigned int mask,
 666                                                  unsigned int val,
 667                                                  bool *change)
 668 {
 669         WARN_ONCE(1, "regmap API is disabled");
 670         return -EINVAL;
 671 }
 672
 673 static inline int regmap_get_val_bytes(struct regmap *map)
 674 {
 675         WARN_ONCE(1, "regmap API is disabled");
 676         return -EINVAL;
 677 }
 678
 679 static inline int regcache_sync(struct regmap *map)
 680 {
 681         WARN_ONCE(1, "regmap API is disabled");
 682         return -EINVAL;
 683 }
 684
 685 static inline int regcache_sync_region(struct regmap *map, unsigned int min,
 686                                        unsigned int max)
 687 {
 688         WARN_ONCE(1, "regmap API is disabled");
 689         return -EINVAL;
 690 }
 691
 692 static inline int regcache_drop_region(struct regmap *map, unsigned int min,
 693                                        unsigned int max)
 694 {
 695         WARN_ONCE(1, "regmap API is disabled");
 696         return -EINVAL;
 697 }
 698
 699 static inline void regcache_cache_only(struct regmap *map, bool enable)
 700 {
 701         WARN_ONCE(1, "regmap API is disabled");
 702 }
 703
 704 static inline void regcache_cache_bypass(struct regmap *map, bool enable)
 705 {
 706         WARN_ONCE(1, "regmap API is disabled");
 707 }
 708
 709 static inline void regcache_mark_dirty(struct regmap *map)
 710 {
 711         WARN_ONCE(1, "regmap API is disabled");
 712 }
 713
 714 static inline void regmap_async_complete(struct regmap *map)
 715 {
 716         WARN_ONCE(1, "regmap API is disabled");
 717 }
 718
 719 static inline int regmap_register_patch(struct regmap *map,
 720                                         const struct reg_default *regs,
 721                                         int num_regs)
 722 {
 723         WARN_ONCE(1, "regmap API is disabled");
 724         return -EINVAL;
 725 }
 726
 727 static inline int regmap_parse_val(struct regmap *map, const void *buf,
 728                                 unsigned int *val)
 729 {
 730         WARN_ONCE(1, "regmap API is disabled");
 731         return -EINVAL;
 732 }
 733
 734 static inline struct regmap *dev_get_regmap(struct device *dev,
 735                                             const char *name)
 736 {
 737         return NULL;
 738 }
 739
 740 static inline struct device *regmap_get_device(struct regmap *map)
 741 {
 742         WARN_ONCE(1, "regmap API is disabled");
 743         return NULL;
 744 }
 745
 746 #endif
 747
 748 #endif