#ifndef __LINUX_REGMAP_H
  #define __LINUX_REGMAP_H
  
  /*
   * Register map access API
   *
   * Copyright 2011 Wolfson Microelectronics plc
   *
   * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/list.h>
  #include <linux/rbtree.h>
  #include <linux/err.h>
  #include <linux/bug.h>
  
  struct module;
  struct device;
  struct i2c_client;
  struct irq_domain;
  struct spi_device;
  struct spmi_device;
  struct regmap;
  struct regmap_range_cfg;
  struct regmap_field;
  
  /* An enum of all the supported cache types */
  enum regcache_type {
  	REGCACHE_NONE,
  	REGCACHE_RBTREE,
  	REGCACHE_COMPRESSED,
  	REGCACHE_FLAT,
  };
  
  /**
   * Default value for a register.  We use an array of structs rather
   * than a simple array as many modern devices have very sparse
   * register maps.
   *
   * @reg: Register address.
   * @def: Register default value.
   */
  struct reg_default {
  	unsigned int reg;
  	unsigned int def;
  };
  
  #ifdef CONFIG_REGMAP
  
  enum regmap_endian {
  	/* Unspecified -> 0 -> Backwards compatible default */
  	REGMAP_ENDIAN_DEFAULT = 0,
  	REGMAP_ENDIAN_BIG,
  	REGMAP_ENDIAN_LITTLE,
  	REGMAP_ENDIAN_NATIVE,
  };
  
  /**
   * 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, }
  
  /*
   * 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.
   *
   * @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
   */
  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 *);
  
  /**
   * 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.
   * @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).
   * @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).
   * @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.
   * @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.
   * @max_register: Optional, specifies the maximum valid register index.
   * @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.
   * @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 byte of the register when doing
   *                  a read.
   * @write_flag_mask: Mask to be set in the top byte of the register when doing
   *                   a write. If both read_flag_mask and write_flag_mask are
   *                   empty the regmap_bus default masks are used.
   * @use_single_rw: If set, converts the bulk read and write operations into
   *		    a series of single read and write operations. This is useful
   *		    for device that does not support bulk read and write.
   *
   * @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.
   * @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 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);
  	regmap_lock lock;
  	regmap_unlock unlock;
  	void *lock_arg;
  
  	int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
  	int (*reg_write)(void *context, unsigned int reg, unsigned int val);
  
  	bool fast_io;
  
  	unsigned int max_register;
  	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 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;
  
  	u8 read_flag_mask;
  	u8 write_flag_mask;
  
  	bool use_single_rw;
  
  	enum regmap_endian reg_format_endian;
  	enum regmap_endian val_format_endian;
  
  	const struct regmap_range_cfg *ranges;
  	unsigned int num_ranges;
  };
  
  /**
   * Configuration for indirectly accessed or paged registers.
   * Registers, mapped to this virtual range, are accessed in two steps:
   *     1. page selector register update;
   *     2. access through data window 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.
   *
   * @page_sel_reg: Register with selector field.
   * @page_sel_mask: Bit shift for selector value.
   * @page_sel_shift: Bit mask for selector value.
   *
   * @window_start: Address of first (lowest) register in data window.
   * @window_len: Number of registers in data window.
   */
  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 struct regmap_async *(*regmap_hw_async_alloc)(void);
  typedef void (*regmap_hw_free_context)(void *context);
  
  /**
   * 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).
   * @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.
   * @read: Read operation.  Data is returned in the buffer used to transmit
   *         data.
   * @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.
   * @async_size: Size of struct used for async work.
   */
  struct regmap_bus {
  	bool fast_io;
  	regmap_hw_write write;
  	regmap_hw_gather_write gather_write;
  	regmap_hw_async_write async_write;
  	regmap_hw_read 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;
  };
  
  struct regmap *regmap_init(struct device *dev,
  			   const struct regmap_bus *bus,
  			   void *bus_context,
  			   const struct regmap_config *config);
  struct regmap *regmap_init_i2c(struct i2c_client *i2c,
  			       const struct regmap_config *config);
  struct regmap *regmap_init_spi(struct spi_device *dev,
  			       const struct regmap_config *config);
  struct regmap *regmap_init_spmi(struct spmi_device *dev,
  			       const struct regmap_config *config);
  struct regmap *regmap_init_mmio_clk(struct device *dev, const char *clk_id,
  				    void __iomem *regs,
  				    const struct regmap_config *config);
  
  struct regmap *devm_regmap_init(struct device *dev,
  				const struct regmap_bus *bus,
  				void *bus_context,
  				const struct regmap_config *config);
  struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
  				    const struct regmap_config *config);
  struct regmap *devm_regmap_init_spi(struct spi_device *dev,
  				    const struct regmap_config *config);
  struct regmap *devm_regmap_init_spmi(struct spmi_device *dev,
  				     const struct regmap_config *config);
  struct regmap *devm_regmap_init_mmio_clk(struct device *dev, const char *clk_id,
  					 void __iomem *regs,
  					 const struct regmap_config *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.
   */
  static inline struct regmap *regmap_init_mmio(struct device *dev,
  					void __iomem *regs,
  					const struct regmap_config *config)
  {
  	return regmap_init_mmio_clk(dev, NULL, 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.
   */
  static inline struct regmap *devm_regmap_init_mmio(struct device *dev,
  					void __iomem *regs,
  					const struct regmap_config *config)
  {
  	return devm_regmap_init_mmio_clk(dev, NULL, regs, config);
  }
  
  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);
  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_bulk_write(struct regmap *map, unsigned int reg, const void *val,
  			size_t val_count);
  int regmap_multi_reg_write(struct regmap *map, struct reg_default *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_raw_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_update_bits(struct regmap *map, unsigned int reg,
  		       unsigned int mask, unsigned int val);
  int regmap_update_bits_async(struct regmap *map, unsigned int reg,
  			     unsigned int mask, unsigned int val);
  int regmap_update_bits_check(struct regmap *map, unsigned int reg,
  			     unsigned int mask, unsigned int val,
  			     bool *change);
  int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
  				   unsigned int mask, unsigned int val,
  				   bool *change);
  int regmap_get_val_bytes(struct regmap *map);
  int regmap_async_complete(struct regmap *map);
  bool regmap_can_raw_write(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 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_default *regs,
  			  int num_regs);
  
  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);
  
  /**
   * Description of an register field
   *
   * @reg: Offset of the register within the regmap bank
   * @lsb: lsb of the register field.
   * @reg: 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,	\
  				}
  
  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_read(struct regmap_field *field, unsigned int *val);
  int regmap_field_write(struct regmap_field *field, unsigned int val);
  int regmap_field_update_bits(struct regmap_field *field,
  			     unsigned int mask, unsigned int val);
  
  int regmap_fields_write(struct regmap_field *field, unsigned int id,
  			unsigned int val);
  int regmap_fields_read(struct regmap_field *field, unsigned int id,
  		       unsigned int *val);
  int regmap_fields_update_bits(struct regmap_field *field,  unsigned int id,
  			      unsigned int mask, unsigned int val);
  
  /**
   * 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.
   */
  struct regmap_irq {
  	unsigned int reg_offset;
  	unsigned int mask;
  };
  
  /**
   * Description of a generic regmap irq_chip.  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.
   *
   * @name:        Descriptive name for IRQ controller.
   *
   * @status_base: Base status register address.
   * @mask_base:   Base mask register address.
   * @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.
   * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
   * @init_ack_masked: Ack all masked interrupts once during initalization.
   * @mask_invert: Inverted mask register: cleared bits are masked out.
   * @use_ack:     Use @ack register even if it is zero.
   * @wake_invert: Inverted wake register: cleared bits are wake enabled.
   * @runtime_pm:  Hold a runtime PM lock on the device when accessing it.
   *
   * @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.
   */
  struct regmap_irq_chip {
  	const char *name;
  
  	unsigned int status_base;
  	unsigned int mask_base;
  	unsigned int ack_base;
  	unsigned int wake_base;
  	unsigned int irq_reg_stride;
  	bool init_ack_masked:1;
  	bool mask_invert:1;
  	bool use_ack:1;
  	bool wake_invert:1;
  	bool runtime_pm:1;
  
  	int num_regs;
  
  	const struct regmap_irq *irqs;
  	int num_irqs;
  };
  
  struct regmap_irq_chip_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);
  void regmap_del_irq_chip(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_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_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_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(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_get_val_bytes(struct regmap *map)
  {
  	WARN_ONCE(1, "regmap API is disabled");
  	return -EINVAL;
  }
  
  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_default *regs,
  					int num_regs)
  {
  	WARN_ONCE(1, "regmap API is disabled");
  	return -EINVAL;
  }
  
  static inline struct regmap *dev_get_regmap(struct device *dev,
  					    const char *name)
  {
  	return NULL;
  }
  
  #endif
  
  #endif