TOMOYO Linux Cross Reference
Linux/include/linux/regmap.h

   /* SPDX-License-Identifier: GPL-2.0-only */
   #ifndef __LINUX_REGMAP_H
   #define __LINUX_REGMAP_H
   
   /*
    * Register map access API
    *
    * Copyright 2011 Wolfson Microelectronics plc
    *
   * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   */
  
  #include <linux/list.h>
  #include <linux/rbtree.h>
  #include <linux/ktime.h>
  #include <linux/delay.h>
  #include <linux/err.h>
  #include <linux/bug.h>
  #include <linux/lockdep.h>
  #include <linux/iopoll.h>
  #include <linux/fwnode.h>
  
  struct module;
  struct clk;
  struct device;
  struct device_node;
  struct fsi_device;
  struct i2c_client;
  struct i3c_device;
  struct irq_domain;
  struct mdio_device;
  struct slim_device;
  struct spi_device;
  struct spmi_device;
  struct regmap;
  struct regmap_range_cfg;
  struct regmap_field;
  struct snd_ac97;
  struct sdw_slave;
  
  /*
   * regmap_mdio address encoding. IEEE 802.3ae clause 45 addresses consist of a
   * device address and a register address.
   */
  #define REGMAP_MDIO_C45_DEVAD_SHIFT     16
  #define REGMAP_MDIO_C45_DEVAD_MASK      GENMASK(20, 16)
  #define REGMAP_MDIO_C45_REGNUM_MASK     GENMASK(15, 0)
  
  /*
   * regmap.reg_shift indicates by how much we must shift registers prior to
   * performing any operation. It's a signed value, positive numbers means
   * downshifting the register's address, while negative numbers means upshifting.
   */
  #define REGMAP_UPSHIFT(s)       (-(s))
  #define REGMAP_DOWNSHIFT(s)     (s)
  
  /* An enum of all the supported cache types */
  enum regcache_type {
          REGCACHE_NONE,
          REGCACHE_RBTREE,
          REGCACHE_FLAT,
          REGCACHE_MAPLE,
  };
  
  /**
   * struct reg_default - Default value for a register.
   *
   * @reg: Register address.
   * @def: Register default value.
   *
   * We use an array of structs rather than a simple array as many modern devices
   * have very sparse register maps.
   */
  struct reg_default {
          unsigned int reg;
          unsigned int def;
  };
  
  /**
   * struct reg_sequence - An individual write from a sequence of writes.
   *
   * @reg: Register address.
   * @def: Register value.
   * @delay_us: Delay to be applied after the register write in microseconds
   *
   * Register/value pairs for sequences of writes with an optional delay in
   * microseconds to be applied after each write.
   */
  struct reg_sequence {
          unsigned int reg;
          unsigned int def;
          unsigned int delay_us;
  };
  
  #define REG_SEQ(_reg, _def, _delay_us) {                \
                                  .reg = _reg,            \
                                  .def = _def,            \
                                  .delay_us = _delay_us,  \
                                  }
 #define REG_SEQ0(_reg, _def)    REG_SEQ(_reg, _def, 0)
 
 /**
  * regmap_read_poll_timeout - Poll until a condition is met or a timeout occurs
  *
  * @map: Regmap to read from
  * @addr: Address to poll
  * @val: Unsigned integer variable to read the value into
  * @cond: Break condition (usually involving @val)
  * @sleep_us: Maximum time to sleep between reads in us (0
  *            tight-loops).  Should be less than ~20ms since usleep_range
  *            is used (see Documentation/timers/timers-howto.rst).
  * @timeout_us: Timeout in us, 0 means never timeout
  *
  * Returns 0 on success and -ETIMEDOUT upon a timeout or the regmap_read
  * error return value in case of a error read. In the two former cases,
  * the last read value at @addr is stored in @val. Must not be called
  * from atomic context if sleep_us or timeout_us are used.
  *
  * This is modelled after the readx_poll_timeout macros in linux/iopoll.h.
  */
 #define regmap_read_poll_timeout(map, addr, val, cond, sleep_us, timeout_us) \
 ({ \
         int __ret, __tmp; \
         __tmp = read_poll_timeout(regmap_read, __ret, __ret || (cond), \
                         sleep_us, timeout_us, false, (map), (addr), &(val)); \
         __ret ?: __tmp; \
 })
 
 /**
  * regmap_read_poll_timeout_atomic - Poll until a condition is met or a timeout occurs
  *
  * @map: Regmap to read from
  * @addr: Address to poll
  * @val: Unsigned integer variable to read the value into
  * @cond: Break condition (usually involving @val)
  * @delay_us: Time to udelay between reads in us (0 tight-loops).
  *            Should be less than ~10us since udelay is used
  *            (see Documentation/timers/timers-howto.rst).
  * @timeout_us: Timeout in us, 0 means never timeout
  *
  * Returns 0 on success and -ETIMEDOUT upon a timeout or the regmap_read
  * error return value in case of a error read. In the two former cases,
  * the last read value at @addr is stored in @val.
  *
  * This is modelled after the readx_poll_timeout_atomic macros in linux/iopoll.h.
  *
  * Note: In general regmap cannot be used in atomic context. If you want to use
  * this macro then first setup your regmap for atomic use (flat or no cache
  * and MMIO regmap).
  */
 #define regmap_read_poll_timeout_atomic(map, addr, val, cond, delay_us, timeout_us) \
 ({ \
         u64 __timeout_us = (timeout_us); \
         unsigned long __delay_us = (delay_us); \
         ktime_t __timeout = ktime_add_us(ktime_get(), __timeout_us); \
         int __ret; \
         for (;;) { \
                 __ret = regmap_read((map), (addr), &(val)); \
                 if (__ret) \
                         break; \
                 if (cond) \
                         break; \
                 if ((__timeout_us) && \
                     ktime_compare(ktime_get(), __timeout) > 0) { \
                         __ret = regmap_read((map), (addr), &(val)); \
                         break; \
                 } \
                 if (__delay_us) \
                         udelay(__delay_us); \
         } \
         __ret ?: ((cond) ? 0 : -ETIMEDOUT); \
 })
 
 /**
  * regmap_field_read_poll_timeout - Poll until a condition is met or timeout
  *
  * @field: Regmap field to read from
  * @val: Unsigned integer variable to read the value into
  * @cond: Break condition (usually involving @val)
  * @sleep_us: Maximum time to sleep between reads in us (0
  *            tight-loops).  Should be less than ~20ms since usleep_range
  *            is used (see Documentation/timers/timers-howto.rst).
  * @timeout_us: Timeout in us, 0 means never timeout
  *
  * Returns 0 on success and -ETIMEDOUT upon a timeout or the regmap_field_read
  * error return value in case of a error read. In the two former cases,
  * the last read value at @addr is stored in @val. Must not be called
  * from atomic context if sleep_us or timeout_us are used.
  *
  * This is modelled after the readx_poll_timeout macros in linux/iopoll.h.
  */
 #define regmap_field_read_poll_timeout(field, val, cond, sleep_us, timeout_us) \
 ({ \
         int __ret, __tmp; \
         __tmp = read_poll_timeout(regmap_field_read, __ret, __ret || (cond), \
                         sleep_us, timeout_us, false, (field), &(val)); \
         __ret ?: __tmp; \
 })
 
 #ifdef CONFIG_REGMAP
 
 enum regmap_endian {
         /* Unspecified -> 0 -> Backwards compatible default */
         REGMAP_ENDIAN_DEFAULT = 0,
         REGMAP_ENDIAN_BIG,
         REGMAP_ENDIAN_LITTLE,
         REGMAP_ENDIAN_NATIVE,
 };
 
 /**
  * struct regmap_range - A register range, used for access related checks
  *                       (readable/writeable/volatile/precious checks)
  *
  * @range_min: address of first register
  * @range_max: address of last register
  */
 struct regmap_range {
         unsigned int range_min;
         unsigned int range_max;
 };
 
 #define regmap_reg_range(low, high) { .range_min = low, .range_max = high, }
 
 /**
  * struct regmap_access_table - A table of register ranges for access checks
  *
  * @yes_ranges : pointer to an array of regmap ranges used as "yes ranges"
  * @n_yes_ranges: size of the above array
  * @no_ranges: pointer to an array of regmap ranges used as "no ranges"
  * @n_no_ranges: size of the above array
  *
  * A table of ranges including some yes ranges and some no ranges.
  * If a register belongs to a no_range, the corresponding check function
  * will return false. If a register belongs to a yes range, the corresponding
  * check function will return true. "no_ranges" are searched first.
  */
 struct regmap_access_table {
         const struct regmap_range *yes_ranges;
         unsigned int n_yes_ranges;
         const struct regmap_range *no_ranges;
         unsigned int n_no_ranges;
 };
 
 typedef void (*regmap_lock)(void *);
 typedef void (*regmap_unlock)(void *);
 
 /**
  * struct regmap_config - Configuration for the register map of a device.
  *
  * @name: Optional name of the regmap. Useful when a device has multiple
  *        register regions.
  *
  * @reg_bits: Number of bits in a register address, mandatory.
  * @reg_stride: The register address stride. Valid register addresses are a
  *              multiple of this value. If set to 0, a value of 1 will be
  *              used.
  * @reg_shift: The number of bits to shift the register before performing any
  *             operations. Any positive number will be downshifted, and negative
  *             values will be upshifted
  * @reg_base: Value to be added to every register address before performing any
  *            operation.
  * @pad_bits: Number of bits of padding between register and value.
  * @val_bits: Number of bits in a register value, mandatory.
  *
  * @writeable_reg: Optional callback returning true if the register
  *                 can be written to. If this field is NULL but wr_table
  *                 (see below) is not, the check is performed on such table
  *                 (a register is writeable if it belongs to one of the ranges
  *                  specified by wr_table).
  * @readable_reg: Optional callback returning true if the register
  *                can be read from. If this field is NULL but rd_table
  *                 (see below) is not, the check is performed on such table
  *                 (a register is readable if it belongs to one of the ranges
  *                  specified by rd_table).
  * @volatile_reg: Optional callback returning true if the register
  *                value can't be cached. If this field is NULL but
  *                volatile_table (see below) is not, the check is performed on
  *                such table (a register is volatile if it belongs to one of
  *                the ranges specified by volatile_table).
  * @precious_reg: Optional callback returning true if the register
  *                should not be read outside of a call from the driver
  *                (e.g., a clear on read interrupt status register). If this
  *                field is NULL but precious_table (see below) is not, the
  *                check is performed on such table (a register is precious if
  *                it belongs to one of the ranges specified by precious_table).
  * @writeable_noinc_reg: Optional callback returning true if the register
  *                      supports multiple write operations without incrementing
  *                      the register number. If this field is NULL but
  *                      wr_noinc_table (see below) is not, the check is
  *                      performed on such table (a register is no increment
  *                      writeable if it belongs to one of the ranges specified
  *                      by wr_noinc_table).
  * @readable_noinc_reg: Optional callback returning true if the register
  *                      supports multiple read operations without incrementing
  *                      the register number. If this field is NULL but
  *                      rd_noinc_table (see below) is not, the check is
  *                      performed on such table (a register is no increment
  *                      readable if it belongs to one of the ranges specified
  *                      by rd_noinc_table).
  * @reg_read:     Optional callback that if filled will be used to perform
  *                all the reads from the registers. Should only be provided for
  *                devices whose read operation cannot be represented as a simple
  *                read operation on a bus such as SPI, I2C, etc. Most of the
  *                devices do not need this.
  * @reg_write:    Same as above for writing.
  * @reg_update_bits: Optional callback that if filled will be used to perform
  *                   all the update_bits(rmw) operation. Should only be provided
  *                   if the function require special handling with lock and reg
  *                   handling and the operation cannot be represented as a simple
  *                   update_bits operation on a bus such as SPI, I2C, etc.
  * @read: Optional callback that if filled will be used to perform all the
  *        bulk reads from the registers. Data is returned in the buffer used
  *        to transmit data.
  * @write: Same as above for writing.
  * @max_raw_read: Max raw read size that can be used on the device.
  * @max_raw_write: Max raw write size that can be used on the device.
  * @can_sleep:    Optional, specifies whether regmap operations can sleep.
  * @fast_io:      Register IO is fast. Use a spinlock instead of a mutex
  *                to perform locking. This field is ignored if custom lock/unlock
  *                functions are used (see fields lock/unlock of struct regmap_config).
  *                This field is a duplicate of a similar file in
  *                'struct regmap_bus' and serves exact same purpose.
  *                 Use it only for "no-bus" cases.
  * @io_port:      Support IO port accessors. Makes sense only when MMIO vs. IO port
  *                access can be distinguished.
  * @disable_locking: This regmap is either protected by external means or
  *                   is guaranteed not to be accessed from multiple threads.
  *                   Don't use any locking mechanisms.
  * @lock:         Optional lock callback (overrides regmap's default lock
  *                function, based on spinlock or mutex).
  * @unlock:       As above for unlocking.
  * @lock_arg:     This field is passed as the only argument of lock/unlock
  *                functions (ignored in case regular lock/unlock functions
  *                are not overridden).
  * @max_register: Optional, specifies the maximum valid register address.
  * @max_register_is_0: Optional, specifies that zero value in @max_register
  *                     should be taken into account. This is a workaround to
  *                     apply handling of @max_register for regmap that contains
  *                     only one register.
  * @wr_table:     Optional, points to a struct regmap_access_table specifying
  *                valid ranges for write access.
  * @rd_table:     As above, for read access.
  * @volatile_table: As above, for volatile registers.
  * @precious_table: As above, for precious registers.
  * @wr_noinc_table: As above, for no increment writeable registers.
  * @rd_noinc_table: As above, for no increment readable registers.
  * @reg_defaults: Power on reset values for registers (for use with
  *                register cache support).
  * @num_reg_defaults: Number of elements in reg_defaults.
  *
  * @read_flag_mask: Mask to be set in the top bytes of the register when doing
  *                  a read.
  * @write_flag_mask: Mask to be set in the top bytes of the register when doing
  *                   a write. If both read_flag_mask and write_flag_mask are
  *                   empty and zero_flag_mask is not set the regmap_bus default
  *                   masks are used.
  * @zero_flag_mask: If set, read_flag_mask and write_flag_mask are used even
  *                   if they are both empty.
  * @use_relaxed_mmio: If set, MMIO R/W operations will not use memory barriers.
  *                    This can avoid load on devices which don't require strict
  *                    orderings, but drivers should carefully add any explicit
  *                    memory barriers when they may require them.
  * @use_single_read: If set, converts the bulk read operation into a series of
  *                   single read operations. This is useful for a device that
  *                   does not support  bulk read.
  * @use_single_write: If set, converts the bulk write operation into a series of
  *                    single write operations. This is useful for a device that
  *                    does not support bulk write.
  * @can_multi_write: If set, the device supports the multi write mode of bulk
  *                   write operations, if clear multi write requests will be
  *                   split into individual write operations
  *
  * @cache_type: The actual cache type.
  * @reg_defaults_raw: Power on reset values for registers (for use with
  *                    register cache support).
  * @num_reg_defaults_raw: Number of elements in reg_defaults_raw.
  * @use_hwlock: Indicate if a hardware spinlock should be used.
  * @use_raw_spinlock: Indicate if a raw spinlock should be used.
  * @hwlock_id: Specify the hardware spinlock id.
  * @hwlock_mode: The hardware spinlock mode, should be HWLOCK_IRQSTATE,
  *               HWLOCK_IRQ or 0.
  * @reg_format_endian: Endianness for formatted register addresses. If this is
  *                     DEFAULT, the @reg_format_endian_default value from the
  *                     regmap bus is used.
  * @val_format_endian: Endianness for formatted register values. If this is
  *                     DEFAULT, the @reg_format_endian_default value from the
  *                     regmap bus is used.
  *
  * @ranges: Array of configuration entries for virtual address ranges.
  * @num_ranges: Number of range configuration entries.
  */
 struct regmap_config {
         const char *name;
 
         int reg_bits;
         int reg_stride;
         int reg_shift;
         unsigned int reg_base;
         int pad_bits;
         int val_bits;
 
         bool (*writeable_reg)(struct device *dev, unsigned int reg);
         bool (*readable_reg)(struct device *dev, unsigned int reg);
         bool (*volatile_reg)(struct device *dev, unsigned int reg);
         bool (*precious_reg)(struct device *dev, unsigned int reg);
         bool (*writeable_noinc_reg)(struct device *dev, unsigned int reg);
         bool (*readable_noinc_reg)(struct device *dev, unsigned int reg);
 
         int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
         int (*reg_write)(void *context, unsigned int reg, unsigned int val);
         int (*reg_update_bits)(void *context, unsigned int reg,
                                unsigned int mask, unsigned int val);
         /* Bulk read/write */
         int (*read)(void *context, const void *reg_buf, size_t reg_size,
                     void *val_buf, size_t val_size);
         int (*write)(void *context, const void *data, size_t count);
         size_t max_raw_read;
         size_t max_raw_write;
 
         bool can_sleep;
 
         bool fast_io;
         bool io_port;
 
         bool disable_locking;
         regmap_lock lock;
         regmap_unlock unlock;
         void *lock_arg;
 
         unsigned int max_register;
         bool max_register_is_0;
         const struct regmap_access_table *wr_table;
         const struct regmap_access_table *rd_table;
         const struct regmap_access_table *volatile_table;
         const struct regmap_access_table *precious_table;
         const struct regmap_access_table *wr_noinc_table;
         const struct regmap_access_table *rd_noinc_table;
         const struct reg_default *reg_defaults;
         unsigned int num_reg_defaults;
         enum regcache_type cache_type;
         const void *reg_defaults_raw;
         unsigned int num_reg_defaults_raw;
 
         unsigned long read_flag_mask;
         unsigned long write_flag_mask;
         bool zero_flag_mask;
 
         bool use_single_read;
         bool use_single_write;
         bool use_relaxed_mmio;
         bool can_multi_write;
 
         bool use_hwlock;
         bool use_raw_spinlock;
         unsigned int hwlock_id;
         unsigned int hwlock_mode;
 
         enum regmap_endian reg_format_endian;
         enum regmap_endian val_format_endian;
 
         const struct regmap_range_cfg *ranges;
         unsigned int num_ranges;
 };
 
 /**
  * struct regmap_range_cfg - Configuration for indirectly accessed or paged
  *                           registers.
  *
  * @name: Descriptive name for diagnostics
  *
  * @range_min: Address of the lowest register address in virtual range.
  * @range_max: Address of the highest register in virtual range.
  *
  * @selector_reg: Register with selector field.
  * @selector_mask: Bit mask for selector value.
  * @selector_shift: Bit shift for selector value.
  *
  * @window_start: Address of first (lowest) register in data window.
  * @window_len: Number of registers in data window.
  *
  * Registers, mapped to this virtual range, are accessed in two steps:
  *     1. page selector register update;
  *     2. access through data window registers.
  */
 struct regmap_range_cfg {
         const char *name;
 
         /* Registers of virtual address range */
         unsigned int range_min;
         unsigned int range_max;
 
         /* Page selector for indirect addressing */
         unsigned int selector_reg;
         unsigned int selector_mask;
         int selector_shift;
 
         /* Data window (per each page) */
         unsigned int window_start;
         unsigned int window_len;
 };
 
 struct regmap_async;
 
 typedef int (*regmap_hw_write)(void *context, const void *data,
                                size_t count);
 typedef int (*regmap_hw_gather_write)(void *context,
                                       const void *reg, size_t reg_len,
                                       const void *val, size_t val_len);
 typedef int (*regmap_hw_async_write)(void *context,
                                      const void *reg, size_t reg_len,
                                      const void *val, size_t val_len,
                                      struct regmap_async *async);
 typedef int (*regmap_hw_read)(void *context,
                               const void *reg_buf, size_t reg_size,
                               void *val_buf, size_t val_size);
 typedef int (*regmap_hw_reg_read)(void *context, unsigned int reg,
                                   unsigned int *val);
 typedef int (*regmap_hw_reg_noinc_read)(void *context, unsigned int reg,
                                         void *val, size_t val_count);
 typedef int (*regmap_hw_reg_write)(void *context, unsigned int reg,
                                    unsigned int val);
 typedef int (*regmap_hw_reg_noinc_write)(void *context, unsigned int reg,
                                          const void *val, size_t val_count);
 typedef int (*regmap_hw_reg_update_bits)(void *context, unsigned int reg,
                                          unsigned int mask, unsigned int val);
 typedef struct regmap_async *(*regmap_hw_async_alloc)(void);
 typedef void (*regmap_hw_free_context)(void *context);
 
 /**
  * struct regmap_bus - Description of a hardware bus for the register map
  *                     infrastructure.
  *
  * @fast_io: Register IO is fast. Use a spinlock instead of a mutex
  *           to perform locking. This field is ignored if custom lock/unlock
  *           functions are used (see fields lock/unlock of
  *           struct regmap_config).
  * @free_on_exit: kfree this on exit of regmap
  * @write: Write operation.
  * @gather_write: Write operation with split register/value, return -ENOTSUPP
  *                if not implemented  on a given device.
  * @async_write: Write operation which completes asynchronously, optional and
  *               must serialise with respect to non-async I/O.
  * @reg_write: Write a single register value to the given register address. This
  *             write operation has to complete when returning from the function.
  * @reg_write_noinc: Write multiple register value to the same register. This
  *             write operation has to complete when returning from the function.
  * @reg_update_bits: Update bits operation to be used against volatile
  *                   registers, intended for devices supporting some mechanism
  *                   for setting clearing bits without having to
  *                   read/modify/write.
  * @read: Read operation.  Data is returned in the buffer used to transmit
  *         data.
  * @reg_read: Read a single register value from a given register address.
  * @free_context: Free context.
  * @async_alloc: Allocate a regmap_async() structure.
  * @read_flag_mask: Mask to be set in the top byte of the register when doing
  *                  a read.
  * @reg_format_endian_default: Default endianness for formatted register
  *     addresses. Used when the regmap_config specifies DEFAULT. If this is
  *     DEFAULT, BIG is assumed.
  * @val_format_endian_default: Default endianness for formatted register
  *     values. Used when the regmap_config specifies DEFAULT. If this is
  *     DEFAULT, BIG is assumed.
  * @max_raw_read: Max raw read size that can be used on the bus.
  * @max_raw_write: Max raw write size that can be used on the bus.
  */
 struct regmap_bus {
         bool fast_io;
         bool free_on_exit;
         regmap_hw_write write;
         regmap_hw_gather_write gather_write;
         regmap_hw_async_write async_write;
         regmap_hw_reg_write reg_write;
         regmap_hw_reg_noinc_write reg_noinc_write;
         regmap_hw_reg_update_bits reg_update_bits;
         regmap_hw_read read;
         regmap_hw_reg_read reg_read;
         regmap_hw_reg_noinc_read reg_noinc_read;
         regmap_hw_free_context free_context;
         regmap_hw_async_alloc async_alloc;
         u8 read_flag_mask;
         enum regmap_endian reg_format_endian_default;
         enum regmap_endian val_format_endian_default;
         size_t max_raw_read;
         size_t max_raw_write;
 };
 
 /*
  * __regmap_init functions.
  *
  * These functions take a lock key and name parameter, and should not be called
  * directly. Instead, use the regmap_init macros that generate a key and name
  * for each call.
  */
 struct regmap *__regmap_init(struct device *dev,
                              const struct regmap_bus *bus,
                              void *bus_context,
                              const struct regmap_config *config,
                              struct lock_class_key *lock_key,
                              const char *lock_name);
 struct regmap *__regmap_init_i2c(struct i2c_client *i2c,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__regmap_init_mdio(struct mdio_device *mdio_dev,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__regmap_init_sccb(struct i2c_client *i2c,
                                   const struct regmap_config *config,
                                   struct lock_class_key *lock_key,
                                   const char *lock_name);
 struct regmap *__regmap_init_slimbus(struct slim_device *slimbus,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__regmap_init_spi(struct spi_device *dev,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__regmap_init_spmi_base(struct spmi_device *dev,
                                        const struct regmap_config *config,
                                        struct lock_class_key *lock_key,
                                        const char *lock_name);
 struct regmap *__regmap_init_spmi_ext(struct spmi_device *dev,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__regmap_init_w1(struct device *w1_dev,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__regmap_init_mmio_clk(struct device *dev, const char *clk_id,
                                       void __iomem *regs,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__regmap_init_ac97(struct snd_ac97 *ac97,
                                   const struct regmap_config *config,
                                   struct lock_class_key *lock_key,
                                   const char *lock_name);
 struct regmap *__regmap_init_sdw(struct sdw_slave *sdw,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__regmap_init_sdw_mbq(struct sdw_slave *sdw,
                                      const struct regmap_config *config,
                                      struct lock_class_key *lock_key,
                                      const char *lock_name);
 struct regmap *__regmap_init_spi_avmm(struct spi_device *spi,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__regmap_init_fsi(struct fsi_device *fsi_dev,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 
 struct regmap *__devm_regmap_init(struct device *dev,
                                   const struct regmap_bus *bus,
                                   void *bus_context,
                                   const struct regmap_config *config,
                                   struct lock_class_key *lock_key,
                                   const char *lock_name);
 struct regmap *__devm_regmap_init_i2c(struct i2c_client *i2c,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__devm_regmap_init_mdio(struct mdio_device *mdio_dev,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__devm_regmap_init_sccb(struct i2c_client *i2c,
                                        const struct regmap_config *config,
                                        struct lock_class_key *lock_key,
                                        const char *lock_name);
 struct regmap *__devm_regmap_init_spi(struct spi_device *dev,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__devm_regmap_init_spmi_base(struct spmi_device *dev,
                                             const struct regmap_config *config,
                                             struct lock_class_key *lock_key,
                                             const char *lock_name);
 struct regmap *__devm_regmap_init_spmi_ext(struct spmi_device *dev,
                                            const struct regmap_config *config,
                                            struct lock_class_key *lock_key,
                                            const char *lock_name);
 struct regmap *__devm_regmap_init_w1(struct device *w1_dev,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 struct regmap *__devm_regmap_init_mmio_clk(struct device *dev,
                                            const char *clk_id,
                                            void __iomem *regs,
                                            const struct regmap_config *config,
                                            struct lock_class_key *lock_key,
                                            const char *lock_name);
 struct regmap *__devm_regmap_init_ac97(struct snd_ac97 *ac97,
                                        const struct regmap_config *config,
                                        struct lock_class_key *lock_key,
                                        const char *lock_name);
 struct regmap *__devm_regmap_init_sdw(struct sdw_slave *sdw,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__devm_regmap_init_sdw_mbq(struct sdw_slave *sdw,
                                           const struct regmap_config *config,
                                           struct lock_class_key *lock_key,
                                           const char *lock_name);
 struct regmap *__devm_regmap_init_slimbus(struct slim_device *slimbus,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__devm_regmap_init_i3c(struct i3c_device *i3c,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
 struct regmap *__devm_regmap_init_spi_avmm(struct spi_device *spi,
                                            const struct regmap_config *config,
                                            struct lock_class_key *lock_key,
                                            const char *lock_name);
 struct regmap *__devm_regmap_init_fsi(struct fsi_device *fsi_dev,
                                       const struct regmap_config *config,
                                       struct lock_class_key *lock_key,
                                       const char *lock_name);
 
 /*
  * Wrapper for regmap_init macros to include a unique lockdep key and name
  * for each call. No-op if CONFIG_LOCKDEP is not set.
  *
  * @fn: Real function to call (in the form __[*_]regmap_init[_*])
  * @name: Config variable name (#config in the calling macro)
  **/
 #ifdef CONFIG_LOCKDEP
 #define __regmap_lockdep_wrapper(fn, name, ...)                         \
 (                                                                       \
         ({                                                              \
                 static struct lock_class_key _key;                      \
                 fn(__VA_ARGS__, &_key,                                  \
                         KBUILD_BASENAME ":"                             \
                         __stringify(__LINE__) ":"                       \
                         "(" name ")->lock");                            \
         })                                                              \
 )
 #else
 #define __regmap_lockdep_wrapper(fn, name, ...) fn(__VA_ARGS__, NULL, NULL)
 #endif
 
 /**
  * regmap_init() - Initialise register map
  *
  * @dev: Device that will be interacted with
  * @bus: Bus-specific callbacks to use with device
  * @bus_context: Data passed to bus-specific callbacks
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.  This function should generally not be called
  * directly, it should be called by bus-specific init functions.
  */
 #define regmap_init(dev, bus, bus_context, config)                      \
         __regmap_lockdep_wrapper(__regmap_init, #config,                \
                                 dev, bus, bus_context, config)
 int regmap_attach_dev(struct device *dev, struct regmap *map,
                       const struct regmap_config *config);
 
 /**
  * regmap_init_i2c() - Initialise register map
  *
  * @i2c: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_i2c(i2c, config)                                    \
         __regmap_lockdep_wrapper(__regmap_init_i2c, #config,            \
                                 i2c, config)
 
 /**
  * regmap_init_mdio() - Initialise register map
  *
  * @mdio_dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_mdio(mdio_dev, config)                              \
         __regmap_lockdep_wrapper(__regmap_init_mdio, #config,           \
                                 mdio_dev, config)
 
 /**
  * regmap_init_sccb() - Initialise register map
  *
  * @i2c: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_sccb(i2c, config)                                   \
         __regmap_lockdep_wrapper(__regmap_init_sccb, #config,           \
                                 i2c, config)
 
 /**
  * regmap_init_slimbus() - Initialise register map
  *
  * @slimbus: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_slimbus(slimbus, config)                            \
         __regmap_lockdep_wrapper(__regmap_init_slimbus, #config,        \
                                 slimbus, config)
 
 /**
  * regmap_init_spi() - Initialise register map
  *
  * @dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_spi(dev, config)                                    \
         __regmap_lockdep_wrapper(__regmap_init_spi, #config,            \
                                 dev, config)
 
 /**
  * regmap_init_spmi_base() - Create regmap for the Base register space
  *
  * @dev:        SPMI device that will be interacted with
  * @config:     Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_spmi_base(dev, config)                              \
         __regmap_lockdep_wrapper(__regmap_init_spmi_base, #config,      \
                                 dev, config)
 
 /**
  * regmap_init_spmi_ext() - Create regmap for Ext register space
  *
  * @dev:        Device that will be interacted with
  * @config:     Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_spmi_ext(dev, config)                               \
         __regmap_lockdep_wrapper(__regmap_init_spmi_ext, #config,       \
                                 dev, config)
 
 /**
  * regmap_init_w1() - Initialise register map
  *
  * @w1_dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_w1(w1_dev, config)                                  \
         __regmap_lockdep_wrapper(__regmap_init_w1, #config,             \
                                 w1_dev, config)
 
 /**
  * regmap_init_mmio_clk() - Initialise register map with register clock
  *
  * @dev: Device that will be interacted with
  * @clk_id: register clock consumer ID
  * @regs: Pointer to memory-mapped IO region
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_mmio_clk(dev, clk_id, regs, config)                 \
         __regmap_lockdep_wrapper(__regmap_init_mmio_clk, #config,       \
                                 dev, clk_id, regs, config)
 
 /**
  * regmap_init_mmio() - Initialise register map
  *
  * @dev: Device that will be interacted with
  * @regs: Pointer to memory-mapped IO region
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_mmio(dev, regs, config)             \
         regmap_init_mmio_clk(dev, NULL, regs, config)
 
 /**
  * regmap_init_ac97() - Initialise AC'97 register map
  *
  * @ac97: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_ac97(ac97, config)                                  \
         __regmap_lockdep_wrapper(__regmap_init_ac97, #config,           \
                                 ac97, config)
 bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 
 /**
  * regmap_init_sdw() - Initialise register map
  *
  * @sdw: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_sdw(sdw, config)                                    \
         __regmap_lockdep_wrapper(__regmap_init_sdw, #config,            \
                                 sdw, config)
 
 /**
  * regmap_init_sdw_mbq() - Initialise register map
  *
  * @sdw: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_sdw_mbq(sdw, config)                                        \
         __regmap_lockdep_wrapper(__regmap_init_sdw_mbq, #config,                \
                                 sdw, config)
 
 /**
  * regmap_init_spi_avmm() - Initialize register map for Intel SPI Slave
  * to AVMM Bus Bridge
  *
  * @spi: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.
  */
 #define regmap_init_spi_avmm(spi, config)                                       \
         __regmap_lockdep_wrapper(__regmap_init_spi_avmm, #config,               \
                                  spi, config)
 
 /**
  * regmap_init_fsi() - Initialise register map
  *
  * @fsi_dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
  * a struct regmap.
  */
 #define regmap_init_fsi(fsi_dev, config)                                \
         __regmap_lockdep_wrapper(__regmap_init_fsi, #config, fsi_dev,   \
                                  config)
 
 /**
  * devm_regmap_init() - Initialise managed register map
  *
  * @dev: Device that will be interacted with
  * @bus: Bus-specific callbacks to use with device
  * @bus_context: Data passed to bus-specific callbacks
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  This function should generally not be called
  * directly, it should be called by bus-specific init functions.  The
  * map will be automatically freed by the device management code.
  */
 #define devm_regmap_init(dev, bus, bus_context, config)                 \
         __regmap_lockdep_wrapper(__devm_regmap_init, #config,           \
                                 dev, bus, bus_context, config)
 
 /**
  * devm_regmap_init_i2c() - Initialise managed register map
  *
  * @i2c: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_i2c(i2c, config)                               \
         __regmap_lockdep_wrapper(__devm_regmap_init_i2c, #config,       \
                                 i2c, config)
 
 /**
  * devm_regmap_init_mdio() - Initialise managed register map
  *
  * @mdio_dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_mdio(mdio_dev, config)                         \
         __regmap_lockdep_wrapper(__devm_regmap_init_mdio, #config,      \
                                 mdio_dev, config)
 
 /**
  * devm_regmap_init_sccb() - Initialise managed register map
  *
  * @i2c: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_sccb(i2c, config)                              \
         __regmap_lockdep_wrapper(__devm_regmap_init_sccb, #config,      \
                                 i2c, config)
 
 /**
  * devm_regmap_init_spi() - Initialise register map
  *
  * @dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The map will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_spi(dev, config)                               \
         __regmap_lockdep_wrapper(__devm_regmap_init_spi, #config,       \
                                 dev, config)
 
 /**
  * devm_regmap_init_spmi_base() - Create managed regmap for Base register space
  *
  * @dev:        SPMI device that will be interacted with
  * @config:     Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_spmi_base(dev, config)                         \
         __regmap_lockdep_wrapper(__devm_regmap_init_spmi_base, #config, \
                                 dev, config)
 
 /**
  * devm_regmap_init_spmi_ext() - Create managed regmap for Ext register space
  *
  * @dev:        SPMI device that will be interacted with
  * @config:     Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_spmi_ext(dev, config)                          \
         __regmap_lockdep_wrapper(__devm_regmap_init_spmi_ext, #config,  \
                                 dev, config)
 
 /**
  * devm_regmap_init_w1() - Initialise managed register map
  *
  * @w1_dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_w1(w1_dev, config)                             \
         __regmap_lockdep_wrapper(__devm_regmap_init_w1, #config,        \
                                 w1_dev, config)
 /**
  * devm_regmap_init_mmio_clk() - Initialise managed register map with clock
  *
  * @dev: Device that will be interacted with
  * @clk_id: register clock consumer ID
  * @regs: Pointer to memory-mapped IO region
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_mmio_clk(dev, clk_id, regs, config)            \
         __regmap_lockdep_wrapper(__devm_regmap_init_mmio_clk, #config,  \
                                 dev, clk_id, regs, config)
 
 /**
  * devm_regmap_init_mmio() - Initialise managed register map
  *
  * @dev: Device that will be interacted with
  * @regs: Pointer to memory-mapped IO region
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_mmio(dev, regs, config)                \
         devm_regmap_init_mmio_clk(dev, NULL, regs, config)
 
 /**
  * devm_regmap_init_ac97() - Initialise AC'97 register map
  *
  * @ac97: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_ac97(ac97, config)                             \
         __regmap_lockdep_wrapper(__devm_regmap_init_ac97, #config,      \
                                 ac97, config)
 
 /**
  * devm_regmap_init_sdw() - Initialise managed register map
  *
  * @sdw: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap. The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_sdw(sdw, config)                               \
         __regmap_lockdep_wrapper(__devm_regmap_init_sdw, #config,       \
                                 sdw, config)
 
 /**
  * devm_regmap_init_sdw_mbq() - Initialise managed register map
  *
  * @sdw: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap. The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_sdw_mbq(sdw, config)                   \
         __regmap_lockdep_wrapper(__devm_regmap_init_sdw_mbq, #config,   \
                                 sdw, config)
 
 /**
  * devm_regmap_init_slimbus() - Initialise managed register map
  *
  * @slimbus: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap. The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_slimbus(slimbus, config)                       \
         __regmap_lockdep_wrapper(__devm_regmap_init_slimbus, #config,   \
                                 slimbus, config)
 
 /**
  * devm_regmap_init_i3c() - Initialise managed register map
  *
  * @i3c: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_i3c(i3c, config)                               \
         __regmap_lockdep_wrapper(__devm_regmap_init_i3c, #config,       \
                                 i3c, config)
 
 /**
  * devm_regmap_init_spi_avmm() - Initialize register map for Intel SPI Slave
  * to AVMM Bus Bridge
  *
  * @spi: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The map will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_spi_avmm(spi, config)                          \
         __regmap_lockdep_wrapper(__devm_regmap_init_spi_avmm, #config,  \
                                  spi, config)
 
 /**
  * devm_regmap_init_fsi() - Initialise managed register map
  *
  * @fsi_dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
  * to a struct regmap.  The regmap will be automatically freed by the
  * device management code.
  */
 #define devm_regmap_init_fsi(fsi_dev, config)                           \
         __regmap_lockdep_wrapper(__devm_regmap_init_fsi, #config,       \
                                  fsi_dev, config)
 
 int regmap_mmio_attach_clk(struct regmap *map, struct clk *clk);
 void regmap_mmio_detach_clk(struct regmap *map);
 void regmap_exit(struct regmap *map);
 int regmap_reinit_cache(struct regmap *map,
                         const struct regmap_config *config);
 struct regmap *dev_get_regmap(struct device *dev, const char *name);
 struct device *regmap_get_device(struct regmap *map);
 int regmap_write(struct regmap *map, unsigned int reg, unsigned int val);
 int regmap_write_async(struct regmap *map, unsigned int reg, unsigned int val);
 int regmap_raw_write(struct regmap *map, unsigned int reg,
                      const void *val, size_t val_len);
 int regmap_noinc_write(struct regmap *map, unsigned int reg,
                      const void *val, size_t val_len);
 int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
                         size_t val_count);
 int regmap_multi_reg_write(struct regmap *map, const struct reg_sequence *regs,
                         int num_regs);
 int regmap_multi_reg_write_bypassed(struct regmap *map,
                                     const struct reg_sequence *regs,
                                     int num_regs);
 int regmap_raw_write_async(struct regmap *map, unsigned int reg,
                            const void *val, size_t val_len);
 int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val);
 int regmap_read_bypassed(struct regmap *map, unsigned int reg, unsigned int *val);
 int regmap_raw_read(struct regmap *map, unsigned int reg,
                     void *val, size_t val_len);
 int regmap_noinc_read(struct regmap *map, unsigned int reg,
                       void *val, size_t val_len);
 int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
                      size_t val_count);
 int regmap_multi_reg_read(struct regmap *map, unsigned int *reg, void *val,
                           size_t val_count);
 int regmap_update_bits_base(struct regmap *map, unsigned int reg,
                             unsigned int mask, unsigned int val,
                             bool *change, bool async, bool force);
 
 static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
                                      unsigned int mask, unsigned int val)
 {
         return regmap_update_bits_base(map, reg, mask, val, NULL, false, false);
 }
 
 static inline int regmap_update_bits_async(struct regmap *map, unsigned int reg,
                                            unsigned int mask, unsigned int val)
 {
         return regmap_update_bits_base(map, reg, mask, val, NULL, true, false);
 }
 
 static inline int regmap_update_bits_check(struct regmap *map, unsigned int reg,
                                            unsigned int mask, unsigned int val,
                                            bool *change)
 {
         return regmap_update_bits_base(map, reg, mask, val,
                                        change, false, false);
 }
 
 static inline int
 regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
                                unsigned int mask, unsigned int val,
                                bool *change)
 {
         return regmap_update_bits_base(map, reg, mask, val,
                                        change, true, false);
 }
 
 static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
                                     unsigned int mask, unsigned int val)
 {
         return regmap_update_bits_base(map, reg, mask, val, NULL, false, true);
 }
 
 int regmap_get_val_bytes(struct regmap *map);
 int regmap_get_max_register(struct regmap *map);
 int regmap_get_reg_stride(struct regmap *map);
 bool regmap_might_sleep(struct regmap *map);
 int regmap_async_complete(struct regmap *map);
 bool regmap_can_raw_write(struct regmap *map);
 size_t regmap_get_raw_read_max(struct regmap *map);
 size_t regmap_get_raw_write_max(struct regmap *map);
 
 int regcache_sync(struct regmap *map);
 int regcache_sync_region(struct regmap *map, unsigned int min,
                          unsigned int max);
 int regcache_drop_region(struct regmap *map, unsigned int min,
                          unsigned int max);
 void regcache_cache_only(struct regmap *map, bool enable);
 void regcache_cache_bypass(struct regmap *map, bool enable);
 void regcache_mark_dirty(struct regmap *map);
 bool regcache_reg_cached(struct regmap *map, unsigned int reg);
 
 bool regmap_check_range_table(struct regmap *map, unsigned int reg,
                               const struct regmap_access_table *table);
 
 int regmap_register_patch(struct regmap *map, const struct reg_sequence *regs,
                           int num_regs);
 int regmap_parse_val(struct regmap *map, const void *buf,
                                 unsigned int *val);
 
 static inline bool regmap_reg_in_range(unsigned int reg,
                                        const struct regmap_range *range)
 {
         return reg >= range->range_min && reg <= range->range_max;
 }
 
 bool regmap_reg_in_ranges(unsigned int reg,
                           const struct regmap_range *ranges,
                           unsigned int nranges);
 
 static inline int regmap_set_bits(struct regmap *map,
                                   unsigned int reg, unsigned int bits)
 {
         return regmap_update_bits_base(map, reg, bits, bits,
                                        NULL, false, false);
 }
 
 static inline int regmap_clear_bits(struct regmap *map,
                                     unsigned int reg, unsigned int bits)
 {
         return regmap_update_bits_base(map, reg, bits, 0, NULL, false, false);
 }
 
 int regmap_test_bits(struct regmap *map, unsigned int reg, unsigned int bits);
 
 /**
  * struct reg_field - Description of an register field
  *
  * @reg: Offset of the register within the regmap bank
  * @lsb: lsb of the register field.
  * @msb: msb of the register field.
  * @id_size: port size if it has some ports
  * @id_offset: address offset for each ports
  */
 struct reg_field {
         unsigned int reg;
         unsigned int lsb;
         unsigned int msb;
         unsigned int id_size;
         unsigned int id_offset;
 };
 
 #define REG_FIELD(_reg, _lsb, _msb) {           \
                                 .reg = _reg,    \
                                 .lsb = _lsb,    \
                                 .msb = _msb,    \
                                 }
 
 #define REG_FIELD_ID(_reg, _lsb, _msb, _size, _offset) {        \
                                 .reg = _reg,                    \
                                 .lsb = _lsb,                    \
                                 .msb = _msb,                    \
                                 .id_size = _size,               \
                                 .id_offset = _offset,           \
                                 }
 
 struct regmap_field *regmap_field_alloc(struct regmap *regmap,
                 struct reg_field reg_field);
 void regmap_field_free(struct regmap_field *field);
 
 struct regmap_field *devm_regmap_field_alloc(struct device *dev,
                 struct regmap *regmap, struct reg_field reg_field);
 void devm_regmap_field_free(struct device *dev, struct regmap_field *field);
 
 int regmap_field_bulk_alloc(struct regmap *regmap,
                              struct regmap_field **rm_field,
                              const struct reg_field *reg_field,
                              int num_fields);
 void regmap_field_bulk_free(struct regmap_field *field);
 int devm_regmap_field_bulk_alloc(struct device *dev, struct regmap *regmap,
                                  struct regmap_field **field,
                                  const struct reg_field *reg_field,
                                  int num_fields);
 void devm_regmap_field_bulk_free(struct device *dev,
                                  struct regmap_field *field);
 
 int regmap_field_read(struct regmap_field *field, unsigned int *val);
 int regmap_field_update_bits_base(struct regmap_field *field,
                                   unsigned int mask, unsigned int val,
                                   bool *change, bool async, bool force);
 int regmap_fields_read(struct regmap_field *field, unsigned int id,
                        unsigned int *val);
 int regmap_fields_update_bits_base(struct regmap_field *field,  unsigned int id,
                                    unsigned int mask, unsigned int val,
                                    bool *change, bool async, bool force);
 
 static inline int regmap_field_write(struct regmap_field *field,
                                      unsigned int val)
 {
         return regmap_field_update_bits_base(field, ~0, val,
                                              NULL, false, false);
 }
 
 static inline int regmap_field_force_write(struct regmap_field *field,
                                            unsigned int val)
 {
         return regmap_field_update_bits_base(field, ~0, val, NULL, false, true);
 }
 
 static inline int regmap_field_update_bits(struct regmap_field *field,
                                            unsigned int mask, unsigned int val)
 {
         return regmap_field_update_bits_base(field, mask, val,
                                              NULL, false, false);
 }
 
 static inline int regmap_field_set_bits(struct regmap_field *field,
                                         unsigned int bits)
 {
         return regmap_field_update_bits_base(field, bits, bits, NULL, false,
                                              false);
 }
 
 static inline int regmap_field_clear_bits(struct regmap_field *field,
                                           unsigned int bits)
 {
         return regmap_field_update_bits_base(field, bits, 0, NULL, false,
                                              false);
 }
 
 int regmap_field_test_bits(struct regmap_field *field, unsigned int bits);
 
 static inline int
 regmap_field_force_update_bits(struct regmap_field *field,
                                unsigned int mask, unsigned int val)
 {
         return regmap_field_update_bits_base(field, mask, val,
                                              NULL, false, true);
 }
 
 static inline int regmap_fields_write(struct regmap_field *field,
                                       unsigned int id, unsigned int val)
 {
         return regmap_fields_update_bits_base(field, id, ~0, val,
                                               NULL, false, false);
 }
 
 static inline int regmap_fields_force_write(struct regmap_field *field,
                                             unsigned int id, unsigned int val)
 {
         return regmap_fields_update_bits_base(field, id, ~0, val,
                                               NULL, false, true);
 }
 
 static inline int
 regmap_fields_update_bits(struct regmap_field *field, unsigned int id,
                           unsigned int mask, unsigned int val)
 {
         return regmap_fields_update_bits_base(field, id, mask, val,
                                               NULL, false, false);
 }
 
 static inline int
 regmap_fields_force_update_bits(struct regmap_field *field, unsigned int id,
                                 unsigned int mask, unsigned int val)
 {
         return regmap_fields_update_bits_base(field, id, mask, val,
                                               NULL, false, true);
 }
 
 /**
  * struct regmap_irq_type - IRQ type definitions.
  *
  * @type_reg_offset: Offset register for the irq type setting.
  * @type_rising_val: Register value to configure RISING type irq.
  * @type_falling_val: Register value to configure FALLING type irq.
  * @type_level_low_val: Register value to configure LEVEL_LOW type irq.
  * @type_level_high_val: Register value to configure LEVEL_HIGH type irq.
  * @types_supported: logical OR of IRQ_TYPE_* flags indicating supported types.
  */
 struct regmap_irq_type {
         unsigned int type_reg_offset;
         unsigned int type_reg_mask;
         unsigned int type_rising_val;
         unsigned int type_falling_val;
         unsigned int type_level_low_val;
         unsigned int type_level_high_val;
         unsigned int types_supported;
 };
 
 /**
  * struct regmap_irq - Description of an IRQ for the generic regmap irq_chip.
  *
  * @reg_offset: Offset of the status/mask register within the bank
  * @mask:       Mask used to flag/control the register.
  * @type:       IRQ trigger type setting details if supported.
  */
 struct regmap_irq {
         unsigned int reg_offset;
         unsigned int mask;
         struct regmap_irq_type type;
 };
 
 #define REGMAP_IRQ_REG(_irq, _off, _mask)               \
         [_irq] = { .reg_offset = (_off), .mask = (_mask) }
 
 #define REGMAP_IRQ_REG_LINE(_id, _reg_bits) \
         [_id] = {                               \
                 .mask = BIT((_id) % (_reg_bits)),       \
                 .reg_offset = (_id) / (_reg_bits),      \
         }
 
 #define REGMAP_IRQ_MAIN_REG_OFFSET(arr)                         \
         { .num_regs = ARRAY_SIZE((arr)), .offset = &(arr)[0] }
 
 struct regmap_irq_sub_irq_map {
         unsigned int num_regs;
         unsigned int *offset;
 };
 
 struct regmap_irq_chip_data;
 
 /**
  * struct regmap_irq_chip - Description of a generic regmap irq_chip.
  *
  * @name:        Descriptive name for IRQ controller.
  *
  * @main_status: Base main status register address. For chips which have
  *               interrupts arranged in separate sub-irq blocks with own IRQ
  *               registers and which have a main IRQ registers indicating
  *               sub-irq blocks with unhandled interrupts. For such chips fill
  *               sub-irq register information in status_base, mask_base and
  *               ack_base.
  * @num_main_status_bits: Should be given to chips where number of meaningfull
  *                        main status bits differs from num_regs.
  * @sub_reg_offsets: arrays of mappings from main register bits to sub irq
  *                   registers. First item in array describes the registers
  *                   for first main status bit. Second array for second bit etc.
  *                   Offset is given as sub register status offset to
  *                   status_base. Should contain num_regs arrays.
  *                   Can be provided for chips with more complex mapping than
  *                   1.st bit to 1.st sub-reg, 2.nd bit to 2.nd sub-reg, ...
  * @num_main_regs: Number of 'main status' irq registers for chips which have
  *                 main_status set.
  *
  * @status_base: Base status register address.
  * @mask_base:   Base mask register address. Mask bits are set to 1 when an
  *               interrupt is masked, 0 when unmasked.
  * @unmask_base:  Base unmask register address. Unmask bits are set to 1 when
  *                an interrupt is unmasked and 0 when masked.
  * @ack_base:    Base ack address. If zero then the chip is clear on read.
  *               Using zero value is possible with @use_ack bit.
  * @wake_base:   Base address for wake enables.  If zero unsupported.
  * @config_base: Base address for IRQ type config regs. If null unsupported.
  * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
  * @init_ack_masked: Ack all masked interrupts once during initalization.
  * @mask_unmask_non_inverted: Controls mask bit inversion for chips that set
  *      both @mask_base and @unmask_base. If false, mask and unmask bits are
  *      inverted (which is deprecated behavior); if true, bits will not be
  *      inverted and the registers keep their normal behavior. Note that if
  *      you use only one of @mask_base or @unmask_base, this flag has no
  *      effect and is unnecessary. Any new drivers that set both @mask_base
  *      and @unmask_base should set this to true to avoid relying on the
  *      deprecated behavior.
  * @use_ack:     Use @ack register even if it is zero.
  * @ack_invert:  Inverted ack register: cleared bits for ack.
  * @clear_ack:  Use this to set 1 and 0 or vice-versa to clear interrupts.
  * @status_invert: Inverted status register: cleared bits are active interrupts.
  * @wake_invert: Inverted wake register: cleared bits are wake enabled.
  * @type_in_mask: Use the mask registers for controlling irq type. Use this if
  *                the hardware provides separate bits for rising/falling edge
  *                or low/high level interrupts and they should be combined into
  *                a single logical interrupt. Use &struct regmap_irq_type data
  *                to define the mask bit for each irq type.
  * @clear_on_unmask: For chips with interrupts cleared on read: read the status
  *                   registers before unmasking interrupts to clear any bits
  *                   set when they were masked.
  * @runtime_pm:  Hold a runtime PM lock on the device when accessing it.
  * @no_status: No status register: all interrupts assumed generated by device.
  *
  * @num_regs:    Number of registers in each control bank.
  *
  * @irqs:        Descriptors for individual IRQs.  Interrupt numbers are
  *               assigned based on the index in the array of the interrupt.
  * @num_irqs:    Number of descriptors.
  * @num_config_bases:   Number of config base registers.
  * @num_config_regs:    Number of config registers for each config base register.
  *
  * @handle_pre_irq:  Driver specific callback to handle interrupt from device
  *                   before regmap_irq_handler process the interrupts.
  * @handle_post_irq: Driver specific callback to handle interrupt from device
  *                   after handling the interrupts in regmap_irq_handler().
  * @handle_mask_sync: Callback used to handle IRQ mask syncs. The index will be
  *                    in the range [0, num_regs)
  * @set_type_config: Callback used for configuring irq types.
  * @get_irq_reg: Callback for mapping (base register, index) pairs to register
  *               addresses. The base register will be one of @status_base,
  *               @mask_base, etc., @main_status, or any of @config_base.
  *               The index will be in the range [0, num_main_regs[ for the
  *               main status base, [0, num_config_regs[ for any config
  *               register base, and [0, num_regs[ for any other base.
  *               If unspecified then regmap_irq_get_irq_reg_linear() is used.
  * @irq_drv_data:    Driver specific IRQ data which is passed as parameter when
  *                   driver specific pre/post interrupt handler is called.
  *
  * This is not intended to handle every possible interrupt controller, but
  * it should handle a substantial proportion of those that are found in the
  * wild.
  */
 struct regmap_irq_chip {
         const char *name;
 
         unsigned int main_status;
         unsigned int num_main_status_bits;
         const struct regmap_irq_sub_irq_map *sub_reg_offsets;
         int num_main_regs;
 
         unsigned int status_base;
         unsigned int mask_base;
         unsigned int unmask_base;
         unsigned int ack_base;
         unsigned int wake_base;
         const unsigned int *config_base;
         unsigned int irq_reg_stride;
         unsigned int init_ack_masked:1;
         unsigned int mask_unmask_non_inverted:1;
         unsigned int use_ack:1;
         unsigned int ack_invert:1;
         unsigned int clear_ack:1;
         unsigned int status_invert:1;
         unsigned int wake_invert:1;
         unsigned int type_in_mask:1;
         unsigned int clear_on_unmask:1;
         unsigned int runtime_pm:1;
         unsigned int no_status:1;
 
         int num_regs;
 
         const struct regmap_irq *irqs;
         int num_irqs;
 
         int num_config_bases;
         int num_config_regs;
 
         int (*handle_pre_irq)(void *irq_drv_data);
         int (*handle_post_irq)(void *irq_drv_data);
         int (*handle_mask_sync)(int index, unsigned int mask_buf_def,
                                 unsigned int mask_buf, void *irq_drv_data);
         int (*set_type_config)(unsigned int **buf, unsigned int type,
                                const struct regmap_irq *irq_data, int idx,
                                void *irq_drv_data);
         unsigned int (*get_irq_reg)(struct regmap_irq_chip_data *data,
                                     unsigned int base, int index);
         void *irq_drv_data;
 };
 
 unsigned int regmap_irq_get_irq_reg_linear(struct regmap_irq_chip_data *data,
                                            unsigned int base, int index);
 int regmap_irq_set_type_config_simple(unsigned int **buf, unsigned int type,
                                       const struct regmap_irq *irq_data,
                                       int idx, void *irq_drv_data);
 
 int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
                         int irq_base, const struct regmap_irq_chip *chip,
                         struct regmap_irq_chip_data **data);
 int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
                                struct regmap *map, int irq,
                                int irq_flags, int irq_base,
                                const struct regmap_irq_chip *chip,
                                struct regmap_irq_chip_data **data);
 void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
 
 int devm_regmap_add_irq_chip(struct device *dev, struct regmap *map, int irq,
                              int irq_flags, int irq_base,
                              const struct regmap_irq_chip *chip,
                              struct regmap_irq_chip_data **data);
 int devm_regmap_add_irq_chip_fwnode(struct device *dev,
                                     struct fwnode_handle *fwnode,
                                     struct regmap *map, int irq,
                                     int irq_flags, int irq_base,
                                     const struct regmap_irq_chip *chip,
                                     struct regmap_irq_chip_data **data);
 void devm_regmap_del_irq_chip(struct device *dev, int irq,
                               struct regmap_irq_chip_data *data);
 
 int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
 int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq);
 struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data);
 
 #else
 
 /*
  * These stubs should only ever be called by generic code which has
  * regmap based facilities, if they ever get called at runtime
  * something is going wrong and something probably needs to select
  * REGMAP.
  */
 
 static inline int regmap_write(struct regmap *map, unsigned int reg,
                                unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_write_async(struct regmap *map, unsigned int reg,
                                      unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
                                    const void *val, size_t val_len)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_raw_write_async(struct regmap *map, unsigned int reg,
                                          const void *val, size_t val_len)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_noinc_write(struct regmap *map, unsigned int reg,
                                     const void *val, size_t val_len)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
                                     const void *val, size_t val_count)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_read(struct regmap *map, unsigned int reg,
                               unsigned int *val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_read_bypassed(struct regmap *map, unsigned int reg,
                                        unsigned int *val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_raw_read(struct regmap *map, unsigned int reg,
                                   void *val, size_t val_len)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_noinc_read(struct regmap *map, unsigned int reg,
                                     void *val, size_t val_len)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
                                    void *val, size_t val_count)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_update_bits_base(struct regmap *map, unsigned int reg,
                                           unsigned int mask, unsigned int val,
                                           bool *change, bool async, bool force)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_set_bits(struct regmap *map,
                                   unsigned int reg, unsigned int bits)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_clear_bits(struct regmap *map,
                                     unsigned int reg, unsigned int bits)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_test_bits(struct regmap *map,
                                    unsigned int reg, unsigned int bits)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_update_bits_base(struct regmap_field *field,
                                         unsigned int mask, unsigned int val,
                                         bool *change, bool async, bool force)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_fields_update_bits_base(struct regmap_field *field,
                                    unsigned int id,
                                    unsigned int mask, unsigned int val,
                                    bool *change, bool async, bool force)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
                                      unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_update_bits_async(struct regmap *map, unsigned int reg,
                                            unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_update_bits_check(struct regmap *map, unsigned int reg,
                                            unsigned int mask, unsigned int val,
                                            bool *change)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int
 regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
                                unsigned int mask, unsigned int val,
                                bool *change)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
                                     unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_write(struct regmap_field *field,
                                      unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_force_write(struct regmap_field *field,
                                            unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_update_bits(struct regmap_field *field,
                                            unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int
 regmap_field_force_update_bits(struct regmap_field *field,
                                unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_set_bits(struct regmap_field *field,
                                         unsigned int bits)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_clear_bits(struct regmap_field *field,
                                           unsigned int bits)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_field_test_bits(struct regmap_field *field,
                                          unsigned int bits)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_fields_write(struct regmap_field *field,
                                       unsigned int id, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_fields_force_write(struct regmap_field *field,
                                             unsigned int id, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int
 regmap_fields_update_bits(struct regmap_field *field, unsigned int id,
                           unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int
 regmap_fields_force_update_bits(struct regmap_field *field, unsigned int id,
                                 unsigned int mask, unsigned int val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_get_val_bytes(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_get_max_register(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_get_reg_stride(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline bool regmap_might_sleep(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return true;
 }
 
 static inline int regcache_sync(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regcache_sync_region(struct regmap *map, unsigned int min,
                                        unsigned int max)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regcache_drop_region(struct regmap *map, unsigned int min,
                                        unsigned int max)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline void regcache_cache_only(struct regmap *map, bool enable)
 {
         WARN_ONCE(1, "regmap API is disabled");
 }
 
 static inline void regcache_cache_bypass(struct regmap *map, bool enable)
 {
         WARN_ONCE(1, "regmap API is disabled");
 }
 
 static inline void regcache_mark_dirty(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
 }
 
 static inline void regmap_async_complete(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
 }
 
 static inline int regmap_register_patch(struct regmap *map,
                                         const struct reg_sequence *regs,
                                         int num_regs)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline int regmap_parse_val(struct regmap *map, const void *buf,
                                 unsigned int *val)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return -EINVAL;
 }
 
 static inline struct regmap *dev_get_regmap(struct device *dev,
                                             const char *name)
 {
         return NULL;
 }
 
 static inline struct device *regmap_get_device(struct regmap *map)
 {
         WARN_ONCE(1, "regmap API is disabled");
         return NULL;
 }
 
 #endif
 
 #endif
 

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