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_write_bits(struct regmap *map, unsigned int reg,
 428                        unsigned int mask, unsigned int val);
 429 int regmap_update_bits_async(struct regmap *map, unsigned int reg,
 430                              unsigned int mask, unsigned int val);
 431 int regmap_update_bits_check(struct regmap *map, unsigned int reg,
 432                              unsigned int mask, unsigned int val,
 433                              bool *change);
 434 int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
 435                                    unsigned int mask, unsigned int val,
 436                                    bool *change);
 437 int regmap_get_val_bytes(struct regmap *map);
 438 int regmap_get_max_register(struct regmap *map);
 439 int regmap_get_reg_stride(struct regmap *map);
 440 int regmap_async_complete(struct regmap *map);
 441 bool regmap_can_raw_write(struct regmap *map);
 442
 443 int regcache_sync(struct regmap *map);
 444 int regcache_sync_region(struct regmap *map, unsigned int min,
 445                          unsigned int max);
 446 int regcache_drop_region(struct regmap *map, unsigned int min,
 447                          unsigned int max);
 448 void regcache_cache_only(struct regmap *map, bool enable);
 449 void regcache_cache_bypass(struct regmap *map, bool enable);
 450 void regcache_mark_dirty(struct regmap *map);
 451
 452 bool regmap_check_range_table(struct regmap *map, unsigned int reg,
 453                               const struct regmap_access_table *table);
 454
 455 int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
 456                           int num_regs);
 457 int regmap_parse_val(struct regmap *map, const void *buf,
 458                                 unsigned int *val);
 459
 460 static inline bool regmap_reg_in_range(unsigned int reg,
 461                                        const struct regmap_range *range)
 462 {
 463         return reg >= range->range_min && reg <= range->range_max;
 464 }
 465
 466 bool regmap_reg_in_ranges(unsigned int reg,
 467                           const struct regmap_range *ranges,
 468                           unsigned int nranges);
 469
 470 /**
 471  * Description of an register field
 472  *
 473  * @reg: Offset of the register within the regmap bank
 474  * @lsb: lsb of the register field.
 475  * @msb: msb of the register field.
 476  * @id_size: port size if it has some ports
 477  * @id_offset: address offset for each ports
 478  */
 479 struct reg_field {
 480         unsigned int reg;
 481         unsigned int lsb;
 482         unsigned int msb;
 483         unsigned int id_size;
 484         unsigned int id_offset;
 485 };
 486
 487 #define REG_FIELD(_reg, _lsb, _msb) {           \
 488                                 .reg = _reg,    \
 489                                 .lsb = _lsb,    \
 490                                 .msb = _msb,    \
 491                                 }
 492
 493 struct regmap_field *regmap_field_alloc(struct regmap *regmap,
 494                 struct reg_field reg_field);
 495 void regmap_field_free(struct regmap_field *field);
 496
 497 struct regmap_field *devm_regmap_field_alloc(struct device *dev,
 498                 struct regmap *regmap, struct reg_field reg_field);
 499 void devm_regmap_field_free(struct device *dev, struct regmap_field *field);
 500
 501 int regmap_field_read(struct regmap_field *field, unsigned int *val);
 502 int regmap_field_write(struct regmap_field *field, unsigned int val);
 503 int regmap_field_update_bits(struct regmap_field *field,
 504                              unsigned int mask, unsigned int val);
 505
 506 int regmap_fields_write(struct regmap_field *field, unsigned int id,
 507                         unsigned int val);
 508 int regmap_fields_force_write(struct regmap_field *field, unsigned int id,
 509                         unsigned int val);
 510 int regmap_fields_read(struct regmap_field *field, unsigned int id,
 511                        unsigned int *val);
 512 int regmap_fields_update_bits(struct regmap_field *field,  unsigned int id,
 513                               unsigned int mask, unsigned int val);
 514
 515 /**
 516  * Description of an IRQ for the generic regmap irq_chip.
 517  *
 518  * @reg_offset: Offset of the status/mask register within the bank
 519  * @mask:       Mask used to flag/control the register.
 520  */
 521 struct regmap_irq {
 522         unsigned int reg_offset;
 523         unsigned int mask;
 524 };
 525
 526 /**
 527  * Description of a generic regmap irq_chip.  This is not intended to
 528  * handle every possible interrupt controller, but it should handle a
 529  * substantial proportion of those that are found in the wild.
 530  *
 531  * @name:        Descriptive name for IRQ controller.
 532  *
 533  * @status_base: Base status register address.
 534  * @mask_base:   Base mask register address.
 535  * @ack_base:    Base ack address. If zero then the chip is clear on read.
 536  *               Using zero value is possible with @use_ack bit.
 537  * @wake_base:   Base address for wake enables.  If zero unsupported.
 538  * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
 539  * @init_ack_masked: Ack all masked interrupts once during initalization.
 540  * @mask_invert: Inverted mask register: cleared bits are masked out.
 541  * @use_ack:     Use @ack register even if it is zero.
 542  * @wake_invert: Inverted wake register: cleared bits are wake enabled.
 543  * @runtime_pm:  Hold a runtime PM lock on the device when accessing it.
 544  *
 545  * @num_regs:    Number of registers in each control bank.
 546  * @irqs:        Descriptors for individual IRQs.  Interrupt numbers are
 547  *               assigned based on the index in the array of the interrupt.
 548  * @num_irqs:    Number of descriptors.
 549  */
 550 struct regmap_irq_chip {
 551         const char *name;
 552
 553         unsigned int status_base;
 554         unsigned int mask_base;
 555         unsigned int ack_base;
 556         unsigned int wake_base;
 557         unsigned int irq_reg_stride;
 558         bool init_ack_masked:1;
 559         bool mask_invert:1;
 560         bool use_ack:1;
 561         bool wake_invert:1;
 562         bool runtime_pm:1;
 563
 564         int num_regs;
 565
 566         const struct regmap_irq *irqs;
 567         int num_irqs;
 568 };
 569
 570 struct regmap_irq_chip_data;
 571
 572 int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
 573                         int irq_base, const struct regmap_irq_chip *chip,
 574                         struct regmap_irq_chip_data **data);
 575 void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
 576 int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
 577 int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq);
 578 struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data);
 579
 580 #else
 581
 582 /*
 583  * These stubs should only ever be called by generic code which has
 584  * regmap based facilities, if they ever get called at runtime
 585  * something is going wrong and something probably needs to select
 586  * REGMAP.
 587  */
 588
 589 static inline int regmap_write(struct regmap *map, unsigned int reg,
 590                                unsigned int val)
 591 {
 592         WARN_ONCE(1, "regmap API is disabled");
 593         return -EINVAL;
 594 }
 595
 596 static inline int regmap_write_async(struct regmap *map, unsigned int reg,
 597                                      unsigned int val)
 598 {
 599         WARN_ONCE(1, "regmap API is disabled");
 600         return -EINVAL;
 601 }
 602
 603 static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
 604                                    const void *val, size_t val_len)
 605 {
 606         WARN_ONCE(1, "regmap API is disabled");
 607         return -EINVAL;
 608 }
 609
 610 static inline int regmap_raw_write_async(struct regmap *map, unsigned int reg,
 611                                          const void *val, size_t val_len)
 612 {
 613         WARN_ONCE(1, "regmap API is disabled");
 614         return -EINVAL;
 615 }
 616
 617 static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
 618                                     const void *val, size_t val_count)
 619 {
 620         WARN_ONCE(1, "regmap API is disabled");
 621         return -EINVAL;
 622 }
 623
 624 static inline int regmap_read(struct regmap *map, unsigned int reg,
 625                               unsigned int *val)
 626 {
 627         WARN_ONCE(1, "regmap API is disabled");
 628         return -EINVAL;
 629 }
 630
 631 static inline int regmap_raw_read(struct regmap *map, unsigned int reg,
 632                                   void *val, size_t val_len)
 633 {
 634         WARN_ONCE(1, "regmap API is disabled");
 635         return -EINVAL;
 636 }
 637
 638 static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
 639                                    void *val, size_t val_count)
 640 {
 641         WARN_ONCE(1, "regmap API is disabled");
 642         return -EINVAL;
 643 }
 644
 645 static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
 646                                      unsigned int mask, unsigned int val)
 647 {
 648         WARN_ONCE(1, "regmap API is disabled");
 649         return -EINVAL;
 650 }
 651
 652 static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
 653                                      unsigned int mask, unsigned int val)
 654 {
 655         WARN_ONCE(1, "regmap API is disabled");
 656         return -EINVAL;
 657 }
 658
 659 static inline int regmap_update_bits_async(struct regmap *map,
 660                                            unsigned int reg,
 661                                            unsigned int mask, unsigned int val)
 662 {
 663         WARN_ONCE(1, "regmap API is disabled");
 664         return -EINVAL;
 665 }
 666
 667 static inline int regmap_update_bits_check(struct regmap *map,
 668                                            unsigned int reg,
 669                                            unsigned int mask, unsigned int val,
 670                                            bool *change)
 671 {
 672         WARN_ONCE(1, "regmap API is disabled");
 673         return -EINVAL;
 674 }
 675
 676 static inline int regmap_update_bits_check_async(struct regmap *map,
 677                                                  unsigned int reg,
 678                                                  unsigned int mask,
 679                                                  unsigned int val,
 680                                                  bool *change)
 681 {
 682         WARN_ONCE(1, "regmap API is disabled");
 683         return -EINVAL;
 684 }
 685
 686 static inline int regmap_get_val_bytes(struct regmap *map)
 687 {
 688         WARN_ONCE(1, "regmap API is disabled");
 689         return -EINVAL;
 690 }
 691
 692 static inline int regmap_get_max_register(struct regmap *map)
 693 {
 694         WARN_ONCE(1, "regmap API is disabled");
 695         return -EINVAL;
 696 }
 697
 698 static inline int regmap_get_reg_stride(struct regmap *map)
 699 {
 700         WARN_ONCE(1, "regmap API is disabled");
 701         return -EINVAL;
 702 }
 703
 704 static inline int regcache_sync(struct regmap *map)
 705 {
 706         WARN_ONCE(1, "regmap API is disabled");
 707         return -EINVAL;
 708 }
 709
 710 static inline int regcache_sync_region(struct regmap *map, unsigned int min,
 711                                        unsigned int max)
 712 {
 713         WARN_ONCE(1, "regmap API is disabled");
 714         return -EINVAL;
 715 }
 716
 717 static inline int regcache_drop_region(struct regmap *map, unsigned int min,
 718                                        unsigned int max)
 719 {
 720         WARN_ONCE(1, "regmap API is disabled");
 721         return -EINVAL;
 722 }
 723
 724 static inline void regcache_cache_only(struct regmap *map, bool enable)
 725 {
 726         WARN_ONCE(1, "regmap API is disabled");
 727 }
 728
 729 static inline void regcache_cache_bypass(struct regmap *map, bool enable)
 730 {
 731         WARN_ONCE(1, "regmap API is disabled");
 732 }
 733
 734 static inline void regcache_mark_dirty(struct regmap *map)
 735 {
 736         WARN_ONCE(1, "regmap API is disabled");
 737 }
 738
 739 static inline void regmap_async_complete(struct regmap *map)
 740 {
 741         WARN_ONCE(1, "regmap API is disabled");
 742 }
 743
 744 static inline int regmap_register_patch(struct regmap *map,
 745                                         const struct reg_default *regs,
 746                                         int num_regs)
 747 {
 748         WARN_ONCE(1, "regmap API is disabled");
 749         return -EINVAL;
 750 }
 751
 752 static inline int regmap_parse_val(struct regmap *map, const void *buf,
 753                                 unsigned int *val)
 754 {
 755         WARN_ONCE(1, "regmap API is disabled");
 756         return -EINVAL;
 757 }
 758
 759 static inline struct regmap *dev_get_regmap(struct device *dev,
 760                                             const char *name)
 761 {
 762         return NULL;
 763 }
 764
 765 static inline struct device *regmap_get_device(struct regmap *map)
 766 {
 767         WARN_ONCE(1, "regmap API is disabled");
 768         return NULL;
 769 }
 770
 771 #endif
 772
 773 #endif