1144 lines
39 KiB
C
1144 lines
39 KiB
C
#ifndef __LINUX_REGMAP_H
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#define __LINUX_REGMAP_H
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/*
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* Register map access API
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*
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* Copyright 2011 Wolfson Microelectronics plc
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/bug.h>
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#include <linux/lockdep.h>
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struct module;
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struct device;
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struct i2c_client;
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struct irq_domain;
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struct spi_device;
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struct spmi_device;
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struct regmap;
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struct regmap_range_cfg;
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struct regmap_field;
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struct snd_ac97;
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/* An enum of all the supported cache types */
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enum regcache_type {
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REGCACHE_NONE,
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REGCACHE_RBTREE,
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REGCACHE_COMPRESSED,
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REGCACHE_FLAT,
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};
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/**
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* Default value for a register. We use an array of structs rather
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* than a simple array as many modern devices have very sparse
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* register maps.
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*
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* @reg: Register address.
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* @def: Register default value.
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*/
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struct reg_default {
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unsigned int reg;
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unsigned int def;
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};
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/**
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* Register/value pairs for sequences of writes with an optional delay in
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* microseconds to be applied after each write.
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*
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* @reg: Register address.
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* @def: Register value.
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* @delay_us: Delay to be applied after the register write in microseconds
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*/
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struct reg_sequence {
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unsigned int reg;
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unsigned int def;
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unsigned int delay_us;
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};
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#define regmap_update_bits(map, reg, mask, val) \
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regmap_update_bits_base(map, reg, mask, val, NULL, false, false)
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#define regmap_update_bits_async(map, reg, mask, val)\
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regmap_update_bits_base(map, reg, mask, val, NULL, true, false)
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#define regmap_update_bits_check(map, reg, mask, val, change)\
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regmap_update_bits_base(map, reg, mask, val, change, false, false)
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#define regmap_update_bits_check_async(map, reg, mask, val, change)\
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regmap_update_bits_base(map, reg, mask, val, change, true, false)
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#define regmap_write_bits(map, reg, mask, val) \
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regmap_update_bits_base(map, reg, mask, val, NULL, false, true)
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#define regmap_field_write(field, val) \
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regmap_field_update_bits_base(field, ~0, val, NULL, false, false)
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#define regmap_field_force_write(field, val) \
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regmap_field_update_bits_base(field, ~0, val, NULL, false, true)
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#define regmap_field_update_bits(field, mask, val)\
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regmap_field_update_bits_base(field, mask, val, NULL, false, false)
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#define regmap_field_force_update_bits(field, mask, val) \
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regmap_field_update_bits_base(field, mask, val, NULL, false, true)
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#define regmap_fields_write(field, id, val) \
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regmap_fields_update_bits_base(field, id, ~0, val, NULL, false, false)
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#define regmap_fields_force_write(field, id, val) \
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regmap_fields_update_bits_base(field, id, ~0, val, NULL, false, true)
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#define regmap_fields_update_bits(field, id, mask, val)\
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regmap_fields_update_bits_base(field, id, mask, val, NULL, false, false)
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#define regmap_fields_force_update_bits(field, id, mask, val) \
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regmap_fields_update_bits_base(field, id, mask, val, NULL, false, true)
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/**
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* regmap_read_poll_timeout - Poll until a condition is met or a timeout occurs
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* @map: Regmap to read from
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* @addr: Address to poll
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* @val: Unsigned integer variable to read the value into
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* @cond: Break condition (usually involving @val)
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* @sleep_us: Maximum time to sleep between reads in us (0
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* tight-loops). Should be less than ~20ms since usleep_range
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* is used (see Documentation/timers/timers-howto.txt).
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* @timeout_us: Timeout in us, 0 means never timeout
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*
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* Returns 0 on success and -ETIMEDOUT upon a timeout or the regmap_read
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* error return value in case of a error read. In the two former cases,
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* the last read value at @addr is stored in @val. Must not be called
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* from atomic context if sleep_us or timeout_us are used.
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*
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* This is modelled after the readx_poll_timeout macros in linux/iopoll.h.
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*/
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#define regmap_read_poll_timeout(map, addr, val, cond, sleep_us, timeout_us) \
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({ \
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ktime_t timeout = ktime_add_us(ktime_get(), timeout_us); \
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int pollret; \
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might_sleep_if(sleep_us); \
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for (;;) { \
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pollret = regmap_read((map), (addr), &(val)); \
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if (pollret) \
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break; \
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if (cond) \
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break; \
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if (timeout_us && ktime_compare(ktime_get(), timeout) > 0) { \
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pollret = regmap_read((map), (addr), &(val)); \
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break; \
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} \
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if (sleep_us) \
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usleep_range((sleep_us >> 2) + 1, sleep_us); \
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} \
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pollret ?: ((cond) ? 0 : -ETIMEDOUT); \
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})
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#ifdef CONFIG_REGMAP
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enum regmap_endian {
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/* Unspecified -> 0 -> Backwards compatible default */
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REGMAP_ENDIAN_DEFAULT = 0,
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REGMAP_ENDIAN_BIG,
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REGMAP_ENDIAN_LITTLE,
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REGMAP_ENDIAN_NATIVE,
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};
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/**
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* A register range, used for access related checks
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* (readable/writeable/volatile/precious checks)
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*
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* @range_min: address of first register
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* @range_max: address of last register
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*/
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struct regmap_range {
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unsigned int range_min;
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unsigned int range_max;
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};
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#define regmap_reg_range(low, high) { .range_min = low, .range_max = high, }
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/*
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* A table of ranges including some yes ranges and some no ranges.
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* If a register belongs to a no_range, the corresponding check function
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* will return false. If a register belongs to a yes range, the corresponding
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* check function will return true. "no_ranges" are searched first.
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*
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* @yes_ranges : pointer to an array of regmap ranges used as "yes ranges"
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* @n_yes_ranges: size of the above array
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* @no_ranges: pointer to an array of regmap ranges used as "no ranges"
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* @n_no_ranges: size of the above array
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*/
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struct regmap_access_table {
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const struct regmap_range *yes_ranges;
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unsigned int n_yes_ranges;
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const struct regmap_range *no_ranges;
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unsigned int n_no_ranges;
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};
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typedef void (*regmap_lock)(void *);
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typedef void (*regmap_unlock)(void *);
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/**
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* Configuration for the register map of a device.
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*
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* @name: Optional name of the regmap. Useful when a device has multiple
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* register regions.
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*
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* @reg_bits: Number of bits in a register address, mandatory.
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* @reg_stride: The register address stride. Valid register addresses are a
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* multiple of this value. If set to 0, a value of 1 will be
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* used.
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* @pad_bits: Number of bits of padding between register and value.
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* @val_bits: Number of bits in a register value, mandatory.
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*
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* @writeable_reg: Optional callback returning true if the register
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* can be written to. If this field is NULL but wr_table
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* (see below) is not, the check is performed on such table
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* (a register is writeable if it belongs to one of the ranges
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* specified by wr_table).
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* @readable_reg: Optional callback returning true if the register
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* can be read from. If this field is NULL but rd_table
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* (see below) is not, the check is performed on such table
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* (a register is readable if it belongs to one of the ranges
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* specified by rd_table).
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* @volatile_reg: Optional callback returning true if the register
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* value can't be cached. If this field is NULL but
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* volatile_table (see below) is not, the check is performed on
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* such table (a register is volatile if it belongs to one of
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* the ranges specified by volatile_table).
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* @precious_reg: Optional callback returning true if the register
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* should not be read outside of a call from the driver
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* (e.g., a clear on read interrupt status register). If this
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* field is NULL but precious_table (see below) is not, the
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* check is performed on such table (a register is precious if
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* it belongs to one of the ranges specified by precious_table).
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* @reg_volatile_set: Optional callback to change access mode for the register
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* between volatile and cached.
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* @lock: Optional lock callback (overrides regmap's default lock
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* function, based on spinlock or mutex).
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* @unlock: As above for unlocking.
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* @lock_arg: this field is passed as the only argument of lock/unlock
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* functions (ignored in case regular lock/unlock functions
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* are not overridden).
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* @reg_read: Optional callback that if filled will be used to perform
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* all the reads from the registers. Should only be provided for
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* devices whose read operation cannot be represented as a simple
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* read operation on a bus such as SPI, I2C, etc. Most of the
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* devices do not need this.
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* @reg_write: Same as above for writing.
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* @fast_io: Register IO is fast. Use a spinlock instead of a mutex
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* to perform locking. This field is ignored if custom lock/unlock
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* functions are used (see fields lock/unlock of struct regmap_config).
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* This field is a duplicate of a similar file in
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* 'struct regmap_bus' and serves exact same purpose.
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* Use it only for "no-bus" cases.
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* @max_register: Optional, specifies the maximum valid register address.
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* @wr_table: Optional, points to a struct regmap_access_table specifying
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* valid ranges for write access.
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* @rd_table: As above, for read access.
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* @volatile_table: As above, for volatile registers.
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* @precious_table: As above, for precious registers.
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* @reg_defaults: Power on reset values for registers (for use with
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* register cache support).
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* @num_reg_defaults: Number of elements in reg_defaults.
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*
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* @read_flag_mask: Mask to be set in the top bytes of the register when doing
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* a read.
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* @write_flag_mask: Mask to be set in the top bytes of the register when doing
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* a write. If both read_flag_mask and write_flag_mask are
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* empty the regmap_bus default masks are used.
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* @use_single_rw: If set, converts the bulk read and write operations into
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* a series of single read and write operations. This is useful
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* for device that does not support bulk read and write.
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* @can_multi_write: If set, the device supports the multi write mode of bulk
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* write operations, if clear multi write requests will be
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* split into individual write operations
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*
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* @cache_type: The actual cache type.
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* @reg_defaults_raw: Power on reset values for registers (for use with
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* register cache support).
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* @num_reg_defaults_raw: Number of elements in reg_defaults_raw.
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* @reg_format_endian: Endianness for formatted register addresses. If this is
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* DEFAULT, the @reg_format_endian_default value from the
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* regmap bus is used.
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* @val_format_endian: Endianness for formatted register values. If this is
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* DEFAULT, the @reg_format_endian_default value from the
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* regmap bus is used.
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*
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* @ranges: Array of configuration entries for virtual address ranges.
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* @num_ranges: Number of range configuration entries.
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*/
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struct regmap_config {
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const char *name;
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int reg_bits;
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int reg_stride;
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int pad_bits;
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int val_bits;
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bool (*writeable_reg)(struct device *dev, unsigned int reg);
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bool (*readable_reg)(struct device *dev, unsigned int reg);
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bool (*volatile_reg)(struct device *dev, unsigned int reg);
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bool (*precious_reg)(struct device *dev, unsigned int reg);
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int (*reg_volatile_set)(struct device *dev, unsigned int reg,
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bool is_volatile);
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regmap_lock lock;
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regmap_unlock unlock;
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void *lock_arg;
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int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
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int (*reg_write)(void *context, unsigned int reg, unsigned int val);
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bool fast_io;
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unsigned int max_register;
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const struct regmap_access_table *wr_table;
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const struct regmap_access_table *rd_table;
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const struct regmap_access_table *volatile_table;
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const struct regmap_access_table *precious_table;
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const struct reg_default *reg_defaults;
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unsigned int num_reg_defaults;
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enum regcache_type cache_type;
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const void *reg_defaults_raw;
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unsigned int num_reg_defaults_raw;
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unsigned long read_flag_mask;
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unsigned long write_flag_mask;
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bool use_single_rw;
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bool can_multi_write;
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enum regmap_endian reg_format_endian;
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enum regmap_endian val_format_endian;
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const struct regmap_range_cfg *ranges;
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unsigned int num_ranges;
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};
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/**
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* Configuration for indirectly accessed or paged registers.
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* Registers, mapped to this virtual range, are accessed in two steps:
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* 1. page selector register update;
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* 2. access through data window registers.
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*
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* @name: Descriptive name for diagnostics
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*
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* @range_min: Address of the lowest register address in virtual range.
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* @range_max: Address of the highest register in virtual range.
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*
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* @page_sel_reg: Register with selector field.
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* @page_sel_mask: Bit shift for selector value.
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* @page_sel_shift: Bit mask for selector value.
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*
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* @window_start: Address of first (lowest) register in data window.
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* @window_len: Number of registers in data window.
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*/
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struct regmap_range_cfg {
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const char *name;
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/* Registers of virtual address range */
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unsigned int range_min;
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unsigned int range_max;
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/* Page selector for indirect addressing */
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unsigned int selector_reg;
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unsigned int selector_mask;
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int selector_shift;
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/* Data window (per each page) */
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unsigned int window_start;
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unsigned int window_len;
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};
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struct regmap_async;
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typedef int (*regmap_hw_write)(void *context, const void *data,
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size_t count);
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typedef int (*regmap_hw_gather_write)(void *context,
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const void *reg, size_t reg_len,
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const void *val, size_t val_len);
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typedef int (*regmap_hw_async_write)(void *context,
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const void *reg, size_t reg_len,
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const void *val, size_t val_len,
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struct regmap_async *async);
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typedef int (*regmap_hw_read)(void *context,
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const void *reg_buf, size_t reg_size,
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void *val_buf, size_t val_size);
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typedef int (*regmap_hw_reg_read)(void *context, unsigned int reg,
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unsigned int *val);
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typedef int (*regmap_hw_reg_write)(void *context, unsigned int reg,
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unsigned int val);
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typedef int (*regmap_hw_reg_update_bits)(void *context, unsigned int reg,
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unsigned int mask, unsigned int val);
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typedef struct regmap_async *(*regmap_hw_async_alloc)(void);
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typedef void (*regmap_hw_free_context)(void *context);
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/**
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* Description of a hardware bus for the register map infrastructure.
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*
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* @fast_io: Register IO is fast. Use a spinlock instead of a mutex
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* to perform locking. This field is ignored if custom lock/unlock
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* functions are used (see fields lock/unlock of
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* struct regmap_config).
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* @write: Write operation.
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* @gather_write: Write operation with split register/value, return -ENOTSUPP
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* if not implemented on a given device.
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* @async_write: Write operation which completes asynchronously, optional and
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* must serialise with respect to non-async I/O.
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* @reg_write: Write a single register value to the given register address. This
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* write operation has to complete when returning from the function.
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* @read: Read operation. Data is returned in the buffer used to transmit
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* data.
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* @reg_read: Read a single register value from a given register address.
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* @free_context: Free context.
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* @async_alloc: Allocate a regmap_async() structure.
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* @read_flag_mask: Mask to be set in the top byte of the register when doing
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* a read.
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* @reg_format_endian_default: Default endianness for formatted register
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* addresses. Used when the regmap_config specifies DEFAULT. If this is
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* DEFAULT, BIG is assumed.
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* @val_format_endian_default: Default endianness for formatted register
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* values. Used when the regmap_config specifies DEFAULT. If this is
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* DEFAULT, BIG is assumed.
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* @max_raw_read: Max raw read size that can be used on the bus.
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* @max_raw_write: Max raw write size that can be used on the bus.
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*/
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struct regmap_bus {
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bool fast_io;
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regmap_hw_write write;
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regmap_hw_gather_write gather_write;
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regmap_hw_async_write async_write;
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regmap_hw_reg_write reg_write;
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regmap_hw_reg_update_bits reg_update_bits;
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regmap_hw_read read;
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regmap_hw_reg_read reg_read;
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regmap_hw_free_context free_context;
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regmap_hw_async_alloc async_alloc;
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u8 read_flag_mask;
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enum regmap_endian reg_format_endian_default;
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enum regmap_endian val_format_endian_default;
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size_t max_raw_read;
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size_t max_raw_write;
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};
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/*
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* __regmap_init functions.
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*
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* These functions take a lock key and name parameter, and should not be called
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* directly. Instead, use the regmap_init macros that generate a key and name
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* for each call.
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*/
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struct regmap *__regmap_init(struct device *dev,
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const struct regmap_bus *bus,
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void *bus_context,
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const struct regmap_config *config,
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struct lock_class_key *lock_key,
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const char *lock_name);
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struct regmap *__regmap_init_i2c(struct i2c_client *i2c,
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const struct regmap_config *config,
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struct lock_class_key *lock_key,
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const char *lock_name);
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struct regmap *__regmap_init_spi(struct spi_device *dev,
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const struct regmap_config *config,
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struct lock_class_key *lock_key,
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const char *lock_name);
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struct regmap *__regmap_init_spmi_base(struct spmi_device *dev,
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const struct regmap_config *config,
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struct lock_class_key *lock_key,
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const char *lock_name);
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struct regmap *__regmap_init_spmi_ext(struct spmi_device *dev,
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const struct regmap_config *config,
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struct lock_class_key *lock_key,
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const char *lock_name);
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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 *__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_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_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);
|
|
|
|
/*
|
|
* 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_spi(): Initialise register map
|
|
*
|
|
* @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(dev, config) \
|
|
__regmap_lockdep_wrapper(__regmap_init_spi, #config, \
|
|
dev, config)
|
|
|
|
/**
|
|
* regmap_init_spmi_base(): Create regmap for the Base register space
|
|
* @sdev: 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
|
|
* @sdev: 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_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);
|
|
|
|
/**
|
|
* 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_spi(): Initialise register map
|
|
*
|
|
* @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(dev, config) \
|
|
__regmap_lockdep_wrapper(__devm_regmap_init_spi, #config, \
|
|
dev, config)
|
|
|
|
/**
|
|
* devm_regmap_init_spmi_base(): Create managed regmap for Base register space
|
|
* @sdev: 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
|
|
* @sdev: 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_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)
|
|
|
|
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_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_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);
|
|
int regmap_get_val_bytes(struct regmap *map);
|
|
int regmap_get_max_register(struct regmap *map);
|
|
int regmap_get_reg_stride(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);
|
|
int regcache_volatile_set(struct regmap *map, unsigned int reg,
|
|
bool is_volatile);
|
|
|
|
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);
|
|
|
|
/**
|
|
* 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, \
|
|
}
|
|
|
|
struct regmap_field *regmap_field_alloc(struct regmap *regmap,
|
|
struct reg_field reg_field);
|
|
void regmap_field_free(struct regmap_field *field);
|
|
|
|
struct regmap_field *devm_regmap_field_alloc(struct device *dev,
|
|
struct regmap *regmap, struct reg_field reg_field);
|
|
void devm_regmap_field_free(struct device *dev, struct regmap_field *field);
|
|
|
|
int regmap_field_read(struct regmap_field *field, unsigned int *val);
|
|
int regmap_field_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);
|
|
|
|
/**
|
|
* 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_reg_offset: Offset register for the irq type setting.
|
|
* @type_rising_mask: Mask bit to configure RISING type irq.
|
|
* @type_falling_mask: Mask bit to configure FALLING type irq.
|
|
*/
|
|
struct regmap_irq {
|
|
unsigned int reg_offset;
|
|
unsigned int mask;
|
|
unsigned int type_reg_offset;
|
|
unsigned int type_rising_mask;
|
|
unsigned int type_falling_mask;
|
|
};
|
|
|
|
#define REGMAP_IRQ_REG(_irq, _off, _mask) \
|
|
[_irq] = { .reg_offset = (_off), .mask = (_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.
|
|
* @unmask_base: Base unmask register address. for chips who have
|
|
* separate mask and unmask registers
|
|
* @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.
|
|
* @type_base: Base address for irq type. If zero unsupported.
|
|
* @irq_reg_stride: Stride to use for chips where registers are not contiguous.
|
|
* @init_ack_masked: Ack all masked interrupts once during initalization.
|
|
* @mask_invert: Inverted mask register: cleared bits are masked out.
|
|
* @use_ack: Use @ack register even if it is zero.
|
|
* @ack_invert: Inverted ack register: cleared bits for ack.
|
|
* @wake_invert: Inverted wake register: cleared bits are wake enabled.
|
|
* @type_invert: Invert the type flags.
|
|
* @runtime_pm: Hold a runtime PM lock on the device when accessing it.
|
|
*
|
|
* @num_regs: Number of registers in each control bank.
|
|
* @irqs: Descriptors for individual IRQs. Interrupt numbers are
|
|
* assigned based on the index in the array of the interrupt.
|
|
* @num_irqs: Number of descriptors.
|
|
* @num_type_reg: Number of type registers.
|
|
* @type_reg_stride: Stride to use for chips where type registers are not
|
|
* contiguous.
|
|
* @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().
|
|
* @irq_drv_data: Driver specific IRQ data which is passed as parameter when
|
|
* driver specific pre/post interrupt handler is called.
|
|
*/
|
|
struct regmap_irq_chip {
|
|
const char *name;
|
|
|
|
unsigned int status_base;
|
|
unsigned int mask_base;
|
|
unsigned int unmask_base;
|
|
unsigned int ack_base;
|
|
unsigned int wake_base;
|
|
unsigned int type_base;
|
|
unsigned int irq_reg_stride;
|
|
bool init_ack_masked:1;
|
|
bool mask_invert:1;
|
|
bool use_ack:1;
|
|
bool ack_invert:1;
|
|
bool wake_invert:1;
|
|
bool runtime_pm:1;
|
|
bool type_invert:1;
|
|
|
|
int num_regs;
|
|
|
|
const struct regmap_irq *irqs;
|
|
int num_irqs;
|
|
|
|
int num_type_reg;
|
|
unsigned int type_reg_stride;
|
|
|
|
int (*handle_pre_irq)(void *irq_drv_data);
|
|
int (*handle_post_irq)(void *irq_drv_data);
|
|
void *irq_drv_data;
|
|
};
|
|
|
|
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 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);
|
|
void devm_regmap_del_irq_chip(struct device *dev, int irq,
|
|
struct regmap_irq_chip_data *data);
|
|
|
|
void regmap_shutdown_irq_chip(struct regmap_irq_chip_data *d);
|
|
int regmap_irq_suspend_noirq(struct regmap_irq_chip_data *d);
|
|
int regmap_irq_resume(struct regmap_irq_chip_data *d);
|
|
int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
|
|
int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq);
|
|
struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data);
|
|
|
|
#else
|
|
|
|
/*
|
|
* These stubs should only ever be called by generic code which has
|
|
* regmap based facilities, if they ever get called at runtime
|
|
* something is going wrong and something probably needs to select
|
|
* REGMAP.
|
|
*/
|
|
|
|
static inline int regmap_write(struct regmap *map, unsigned int reg,
|
|
unsigned int val)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_write_async(struct regmap *map, unsigned int reg,
|
|
unsigned int val)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
|
|
const void *val, size_t val_len)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_raw_write_async(struct regmap *map, unsigned int reg,
|
|
const void *val, size_t val_len)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
|
|
const void *val, size_t val_count)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_read(struct regmap *map, unsigned int reg,
|
|
unsigned int *val)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_raw_read(struct regmap *map, unsigned int reg,
|
|
void *val, size_t val_len)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
|
|
void *val, size_t val_count)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int regmap_update_bits_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_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_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 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 int regcache_volatile_set(struct regmap *map, unsigned int reg,
|
|
bool is_volatile)
|
|
{
|
|
WARN_ONCE(1, "regmap API is disabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
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
|