[mirror_ubuntu-bionic-kernel.git] / include / linux / regmap.h

#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>

struct module;
struct device;
struct i2c_client;
struct spi_device;
struct regmap;

/* An enum of all the supported cache types */
enum regcache_type {
	REGCACHE_NONE,
	REGCACHE_RBTREE,
	REGCACHE_COMPRESSED
};

/**
 * 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,
};

/**
 * 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.
 * @readable_reg: Optional callback returning true if the register
 *                can be read from.
 * @volatile_reg: Optional callback returning true if the register
 *                value can't be cached.
 * @precious_reg: Optional callback returning true if the rgister
 *                should not be read outside of a call from the driver
 *                (eg, a clear on read interrupt status register).
 *
 * @max_register: Optional, specifies the maximum valid register index.
 * @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.
 */
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);

	unsigned int max_register;
	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;
};

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_read)(void *context,
			      const void *reg_buf, size_t reg_size,
			      void *val_buf, size_t val_size);
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.
 * @write: Write operation.
 * @gather_write: Write operation with split register/value, return -ENOTSUPP
 *                if not implemented  on a given device.
 * @read: Read operation.  Data is returned in the buffer used to transmit
 *         data.
 * @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.
 */
struct regmap_bus {
	bool fast_io;
	regmap_hw_write write;
	regmap_hw_gather_write gather_write;
	regmap_hw_read read;
	regmap_hw_free_context free_context;
	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_mmio(struct device *dev,
				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_mmio(struct device *dev,
				     void __iomem *regs,
				     const struct regmap_config *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_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_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_check(struct regmap *map, unsigned int reg,
			     unsigned int mask, unsigned int val,
			     bool *change);
int regmap_get_val_bytes(struct regmap *map);

int regcache_sync(struct regmap *map);
int regcache_sync_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);

int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
			  int num_regs);

/**
 * 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.
 * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
 *
 * @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 irq_reg_stride;

	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);

#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_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_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_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_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 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 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
Commit	Line	Data
b83a313b MB	1	#ifndef __LINUX_REGMAP_H
	2	#define __LINUX_REGMAP_H
	3
	4	/*
	5	* Register map access API
	6	*
	7	* Copyright 2011 Wolfson Microelectronics plc
	8	*
	9	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License version 2 as
	13	* published by the Free Software Foundation.
	14	*/
	15
b83a313b	16	#include <linux/list.h>
b83a313b	17
de477254	18	struct module;
313162d0	19	struct device;
9943fa30	20	struct i2c_client;
a676f083	21	struct spi_device;
b83d2ff0	22	struct regmap;
9943fa30	23
9fabe24e DP	24	/* An enum of all the supported cache types */
	25	enum regcache_type {
	26	REGCACHE_NONE,
28644c80	27	REGCACHE_RBTREE,
50b776fc	28	REGCACHE_COMPRESSED
9fabe24e DP	29	};
9fabe24e DP	30
bd20eb54 MB	31	/**
	32	* Default value for a register. We use an array of structs rather
	33	* than a simple array as many modern devices have very sparse
	34	* register maps.
	35	*
	36	* @reg: Register address.
	37	* @def: Register default value.
	38	*/
	39	struct reg_default {
	40	unsigned int reg;
	41	unsigned int def;
	42	};
	43
b83d2ff0 MB	44	#ifdef CONFIG_REGMAP
b83d2ff0 MB	45
141eba2e SW	46	enum regmap_endian {
	47	/* Unspecified -> 0 -> Backwards compatible default */
	48	REGMAP_ENDIAN_DEFAULT = 0,
	49	REGMAP_ENDIAN_BIG,
	50	REGMAP_ENDIAN_LITTLE,
	51	REGMAP_ENDIAN_NATIVE,
	52	};
	53
dd898b20 MB	54	/**
	55	* Configuration for the register map of a device.
	56	*
d3c242e1 SW	57	* @name: Optional name of the regmap. Useful when a device has multiple
	58	* register regions.
	59	*
dd898b20	60	* @reg_bits: Number of bits in a register address, mandatory.
f01ee60f SW	61	* @reg_stride: The register address stride. Valid register addresses are a
	62	* multiple of this value. If set to 0, a value of 1 will be
	63	* used.
82159ba8	64	* @pad_bits: Number of bits of padding between register and value.
dd898b20	65	* @val_bits: Number of bits in a register value, mandatory.
2e2ae66d	66	*
3566cc9d MB	67	* @writeable_reg: Optional callback returning true if the register
	68	* can be written to.
	69	* @readable_reg: Optional callback returning true if the register
	70	* can be read from.
	71	* @volatile_reg: Optional callback returning true if the register
	72	* value can't be cached.
	73	* @precious_reg: Optional callback returning true if the rgister
	74	* should not be read outside of a call from the driver
	75	* (eg, a clear on read interrupt status register).
bd20eb54 MB	76	*
	77	* @max_register: Optional, specifies the maximum valid register index.
	78	* @reg_defaults: Power on reset values for registers (for use with
	79	* register cache support).
	80	* @num_reg_defaults: Number of elements in reg_defaults.
6f306441 LPC	81	*
	82	* @read_flag_mask: Mask to be set in the top byte of the register when doing
	83	* a read.
	84	* @write_flag_mask: Mask to be set in the top byte of the register when doing
	85	* a write. If both read_flag_mask and write_flag_mask are
	86	* empty the regmap_bus default masks are used.
2e33caf1 AJ	87	* @use_single_rw: If set, converts the bulk read and write operations into
	88	* a series of single read and write operations. This is useful
	89	* for device that does not support bulk read and write.
9fabe24e DP	90	*
	91	* @cache_type: The actual cache type.
	92	* @reg_defaults_raw: Power on reset values for registers (for use with
	93	* register cache support).
	94	* @num_reg_defaults_raw: Number of elements in reg_defaults_raw.
141eba2e SW	95	* @reg_format_endian: Endianness for formatted register addresses. If this is
	96	* DEFAULT, the @reg_format_endian_default value from the
	97	* regmap bus is used.
	98	* @val_format_endian: Endianness for formatted register values. If this is
	99	* DEFAULT, the @reg_format_endian_default value from the
	100	* regmap bus is used.
dd898b20	101	*/
b83a313b	102	struct regmap_config {
d3c242e1 SW	103	const char *name;
d3c242e1 SW	104
b83a313b	105	int reg_bits;
f01ee60f	106	int reg_stride;
82159ba8	107	int pad_bits;
b83a313b	108	int val_bits;
2e2ae66d	109
2e2ae66d MB	110	bool (writeable_reg)(struct device dev, unsigned int reg);
	111	bool (readable_reg)(struct device dev, unsigned int reg);
	112	bool (volatile_reg)(struct device dev, unsigned int reg);
18694886	113	bool (precious_reg)(struct device dev, unsigned int reg);
bd20eb54 MB	114
bd20eb54 MB	115	unsigned int max_register;
720e4616	116	const struct reg_default *reg_defaults;
9fabe24e DP	117	unsigned int num_reg_defaults;
	118	enum regcache_type cache_type;
	119	const void *reg_defaults_raw;
	120	unsigned int num_reg_defaults_raw;
6f306441 LPC	121
	122	u8 read_flag_mask;
	123	u8 write_flag_mask;
2e33caf1 AJ	124
2e33caf1 AJ	125	bool use_single_rw;
141eba2e SW	126
	127	enum regmap_endian reg_format_endian;
	128	enum regmap_endian val_format_endian;
b83a313b MB	129	};
b83a313b MB	130
0135bbcc	131	typedef int (regmap_hw_write)(void context, const void *data,
b83a313b	132	size_t count);
0135bbcc	133	typedef int (regmap_hw_gather_write)(void context,
b83a313b MB	134	const void *reg, size_t reg_len,
b83a313b MB	135	const void *val, size_t val_len);
0135bbcc	136	typedef int (regmap_hw_read)(void context,
b83a313b MB	137	const void *reg_buf, size_t reg_size,
b83a313b MB	138	void *val_buf, size_t val_size);
0135bbcc	139	typedef void (regmap_hw_free_context)(void context);
b83a313b MB	140
	141	/**
	142	* Description of a hardware bus for the register map infrastructure.
	143	*
bacdbe07 SW	144	* @fast_io: Register IO is fast. Use a spinlock instead of a mutex
bacdbe07 SW	145	* to perform locking.
b83a313b MB	146	* @write: Write operation.
	147	* @gather_write: Write operation with split register/value, return -ENOTSUPP
	148	* if not implemented on a given device.
	149	* @read: Read operation. Data is returned in the buffer used to transmit
	150	* data.
b83a313b MB	151	* @read_flag_mask: Mask to be set in the top byte of the register when doing
b83a313b MB	152	* a read.
141eba2e SW	153	* @reg_format_endian_default: Default endianness for formatted register
	154	* addresses. Used when the regmap_config specifies DEFAULT. If this is
	155	* DEFAULT, BIG is assumed.
	156	* @val_format_endian_default: Default endianness for formatted register
	157	* values. Used when the regmap_config specifies DEFAULT. If this is
	158	* DEFAULT, BIG is assumed.
b83a313b MB	159	*/
b83a313b MB	160	struct regmap_bus {
bacdbe07	161	bool fast_io;
b83a313b MB	162	regmap_hw_write write;
	163	regmap_hw_gather_write gather_write;
	164	regmap_hw_read read;
0135bbcc	165	regmap_hw_free_context free_context;
b83a313b	166	u8 read_flag_mask;
141eba2e SW	167	enum regmap_endian reg_format_endian_default;
141eba2e SW	168	enum regmap_endian val_format_endian_default;
b83a313b MB	169	};
	170
	171	struct regmap regmap_init(struct device dev,
	172	const struct regmap_bus *bus,
0135bbcc	173	void *bus_context,
b83a313b	174	const struct regmap_config *config);
9943fa30 MB	175	struct regmap regmap_init_i2c(struct i2c_client i2c,
9943fa30 MB	176	const struct regmap_config *config);
a676f083 MB	177	struct regmap regmap_init_spi(struct spi_device dev,
a676f083 MB	178	const struct regmap_config *config);
45f5ff81 SW	179	struct regmap regmap_init_mmio(struct device dev,
	180	void __iomem *regs,
	181	const struct regmap_config *config);
a676f083	182
c0eb4676 MB	183	struct regmap devm_regmap_init(struct device dev,
c0eb4676 MB	184	const struct regmap_bus *bus,
0135bbcc	185	void *bus_context,
c0eb4676 MB	186	const struct regmap_config *config);
	187	struct regmap devm_regmap_init_i2c(struct i2c_client i2c,
	188	const struct regmap_config *config);
	189	struct regmap devm_regmap_init_spi(struct spi_device dev,
	190	const struct regmap_config *config);
45f5ff81 SW	191	struct regmap devm_regmap_init_mmio(struct device dev,
	192	void __iomem *regs,
	193	const struct regmap_config *config);
c0eb4676	194
b83a313b	195	void regmap_exit(struct regmap *map);
bf315173 MB	196	int regmap_reinit_cache(struct regmap *map,
bf315173 MB	197	const struct regmap_config *config);
72b39f6f	198	struct regmap dev_get_regmap(struct device dev, const char *name);
b83a313b MB	199	int regmap_write(struct regmap *map, unsigned int reg, unsigned int val);
	200	int regmap_raw_write(struct regmap *map, unsigned int reg,
	201	const void *val, size_t val_len);
8eaeb219 LD	202	int regmap_bulk_write(struct regmap map, unsigned int reg, const void val,
8eaeb219 LD	203	size_t val_count);
b83a313b MB	204	int regmap_read(struct regmap map, unsigned int reg, unsigned int val);
	205	int regmap_raw_read(struct regmap *map, unsigned int reg,
	206	void *val, size_t val_len);
	207	int regmap_bulk_read(struct regmap map, unsigned int reg, void val,
	208	size_t val_count);
	209	int regmap_update_bits(struct regmap *map, unsigned int reg,
	210	unsigned int mask, unsigned int val);
018690d3 MB	211	int regmap_update_bits_check(struct regmap *map, unsigned int reg,
	212	unsigned int mask, unsigned int val,
	213	bool *change);
a6539c32	214	int regmap_get_val_bytes(struct regmap *map);
b83a313b	215
39a58439	216	int regcache_sync(struct regmap *map);
4d4cfd16 MB	217	int regcache_sync_region(struct regmap *map, unsigned int min,
4d4cfd16 MB	218	unsigned int max);
92afb286	219	void regcache_cache_only(struct regmap *map, bool enable);
6eb0f5e0	220	void regcache_cache_bypass(struct regmap *map, bool enable);
8ae0d7e8	221	void regcache_mark_dirty(struct regmap *map);
92afb286	222
22f0d90a MB	223	int regmap_register_patch(struct regmap map, const struct reg_default regs,
	224	int num_regs);
	225
f8beab2b MB	226	/**
	227	* Description of an IRQ for the generic regmap irq_chip.
	228	*
	229	* @reg_offset: Offset of the status/mask register within the bank
	230	* @mask: Mask used to flag/control the register.
	231	*/
	232	struct regmap_irq {
	233	unsigned int reg_offset;
	234	unsigned int mask;
	235	};
	236
	237	/**
	238	* Description of a generic regmap irq_chip. This is not intended to
	239	* handle every possible interrupt controller, but it should handle a
	240	* substantial proportion of those that are found in the wild.
	241	*
	242	* @name: Descriptive name for IRQ controller.
	243	*
	244	* @status_base: Base status register address.
	245	* @mask_base: Base mask register address.
	246	* @ack_base: Base ack address. If zero then the chip is clear on read.
022f926a	247	* @irq_reg_stride: Stride to use for chips where registers are not contiguous.
f8beab2b MB	248	*
	249	* @num_regs: Number of registers in each control bank.
	250	* @irqs: Descriptors for individual IRQs. Interrupt numbers are
	251	* assigned based on the index in the array of the interrupt.
	252	* @num_irqs: Number of descriptors.
	253	*/
	254	struct regmap_irq_chip {
	255	const char *name;
	256
	257	unsigned int status_base;
	258	unsigned int mask_base;
	259	unsigned int ack_base;
022f926a	260	unsigned int irq_reg_stride;
f8beab2b MB	261
	262	int num_regs;
	263
	264	const struct regmap_irq *irqs;
	265	int num_irqs;
	266	};
	267
	268	struct regmap_irq_chip_data;
	269
	270	int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
b026ddbb	271	int irq_base, const struct regmap_irq_chip *chip,
f8beab2b MB	272	struct regmap_irq_chip_data **data);
f8beab2b MB	273	void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
209a6006	274	int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
4af8be67	275	int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq);
92afb286	276
9cde5fcd MB	277	#else
	278
	279	/*
	280	* These stubs should only ever be called by generic code which has
	281	* regmap based facilities, if they ever get called at runtime
	282	* something is going wrong and something probably needs to select
	283	* REGMAP.
	284	*/
	285
	286	static inline int regmap_write(struct regmap *map, unsigned int reg,
	287	unsigned int val)
	288	{
	289	WARN_ONCE(1, "regmap API is disabled");
	290	return -EINVAL;
	291	}
	292
	293	static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
	294	const void *val, size_t val_len)
	295	{
	296	WARN_ONCE(1, "regmap API is disabled");
	297	return -EINVAL;
	298	}
	299
	300	static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
	301	const void *val, size_t val_count)
	302	{
	303	WARN_ONCE(1, "regmap API is disabled");
	304	return -EINVAL;
	305	}
	306
	307	static inline int regmap_read(struct regmap *map, unsigned int reg,
	308	unsigned int *val)
	309	{
	310	WARN_ONCE(1, "regmap API is disabled");
	311	return -EINVAL;
	312	}
	313
	314	static inline int regmap_raw_read(struct regmap *map, unsigned int reg,
	315	void *val, size_t val_len)
	316	{
	317	WARN_ONCE(1, "regmap API is disabled");
	318	return -EINVAL;
	319	}
	320
	321	static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
	322	void *val, size_t val_count)
	323	{
	324	WARN_ONCE(1, "regmap API is disabled");
	325	return -EINVAL;
	326	}
	327
	328	static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
	329	unsigned int mask, unsigned int val)
	330	{
	331	WARN_ONCE(1, "regmap API is disabled");
	332	return -EINVAL;
	333	}
	334
	335	static inline int regmap_update_bits_check(struct regmap *map,
	336	unsigned int reg,
	337	unsigned int mask, unsigned int val,
	338	bool *change)
	339	{
	340	WARN_ONCE(1, "regmap API is disabled");
341	return -EINVAL;
342	}
343
344	static inline int regmap_get_val_bytes(struct regmap *map)
345	{
346	WARN_ONCE(1, "regmap API is disabled");
347	return -EINVAL;
348	}
349
350	static inline int regcache_sync(struct regmap *map)
351	{
352	WARN_ONCE(1, "regmap API is disabled");
353	return -EINVAL;
354	}
355
a313f9f5 MB	356	static inline int regcache_sync_region(struct regmap *map, unsigned int min,
	357	unsigned int max)
	358	{
	359	WARN_ONCE(1, "regmap API is disabled");
	360	return -EINVAL;
	361	}
	362
9cde5fcd MB	363	static inline void regcache_cache_only(struct regmap *map, bool enable)
	364	{
	365	WARN_ONCE(1, "regmap API is disabled");
	366	}
	367
	368	static inline void regcache_cache_bypass(struct regmap *map, bool enable)
	369	{
	370	WARN_ONCE(1, "regmap API is disabled");
	371	}
	372
	373	static inline void regcache_mark_dirty(struct regmap *map)
	374	{
	375	WARN_ONCE(1, "regmap API is disabled");
	376	}
	377
	378	static inline int regmap_register_patch(struct regmap *map,
	379	const struct reg_default *regs,
	380	int num_regs)
	381	{
	382	WARN_ONCE(1, "regmap API is disabled");
	383	return -EINVAL;
	384	}
	385
72b39f6f MB	386	static inline struct regmap dev_get_regmap(struct device dev,
	387	const char *name)
	388	{
72b39f6f MB	389	return NULL;
	390	}
	391
9cde5fcd MB	392	#endif
9cde5fcd MB	393
b83a313b	394	#endif