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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). * @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). * @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. * @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. * @max_register: Optional, specifies the maximum valid register address. * @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. * @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. * @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. * @can_sleep: Optional, specifies whether regmap operations can sleep. */ 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); bool disable_locking; 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); 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 fast_io; bool io_port; 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 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; enum regmap_endian reg_format_endian; enum regmap_endian val_format_endian; const struct regmap_range_cfg *ranges; unsigned int num_ranges; bool use_hwlock; bool use_raw_spinlock; unsigned int hwlock_id; unsigned int hwlock_mode; bool can_sleep; }; /** * 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_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_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; 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_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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