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