LXR linux/drivers/iio/magnetometer/hmc5843

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * i2c driver for hmc5843/5843/5883/5883l/5983
   4 *
   5 * Split from hmc5843.c
   6 * Copyright (C) Josef Gajdusek <atx@atx.name>
   7 */
   8
   9#include <linux/module.h>
  10#include <linux/i2c.h>
  11#include <linux/regmap.h>
  12#include <linux/iio/iio.h>
  13#include <linux/iio/triggered_buffer.h>
  14
  15#include "hmc5843.h"
  16
  17static const struct regmap_range hmc5843_readable_ranges[] = {
  18        regmap_reg_range(0, HMC5843_ID_END),
  19};
  20
  21static const struct regmap_access_table hmc5843_readable_table = {
  22        .yes_ranges = hmc5843_readable_ranges,
  23        .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges),
  24};
  25
  26static const struct regmap_range hmc5843_writable_ranges[] = {
  27        regmap_reg_range(0, HMC5843_MODE_REG),
  28};
  29
  30static const struct regmap_access_table hmc5843_writable_table = {
  31        .yes_ranges = hmc5843_writable_ranges,
  32        .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges),
  33};
  34
  35static const struct regmap_range hmc5843_volatile_ranges[] = {
  36        regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG),
  37};
  38
  39static const struct regmap_access_table hmc5843_volatile_table = {
  40        .yes_ranges = hmc5843_volatile_ranges,
  41        .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges),
  42};
  43
  44static const struct regmap_config hmc5843_i2c_regmap_config = {
  45        .reg_bits = 8,
  46        .val_bits = 8,
  47
  48        .rd_table = &hmc5843_readable_table,
  49        .wr_table = &hmc5843_writable_table,
  50        .volatile_table = &hmc5843_volatile_table,
  51
  52        .cache_type = REGCACHE_RBTREE,
  53};
  54
  55static int hmc5843_i2c_probe(struct i2c_client *cli,
  56                             const struct i2c_device_id *id)
  57{
  58        struct regmap *regmap = devm_regmap_init_i2c(cli,
  59                        &hmc5843_i2c_regmap_config);
  60        if (IS_ERR(regmap))
  61                return PTR_ERR(regmap);
  62
  63        return hmc5843_common_probe(&cli->dev,
  64                        regmap,
  65                        id->driver_data, id->name);
  66}
  67
  68static int hmc5843_i2c_remove(struct i2c_client *client)
  69{
  70        return hmc5843_common_remove(&client->dev);
  71}
  72
  73static const struct i2c_device_id hmc5843_id[] = {
  74        { "hmc5843", HMC5843_ID },
  75        { "hmc5883", HMC5883_ID },
  76        { "hmc5883l", HMC5883L_ID },
  77        { "hmc5983", HMC5983_ID },
  78        { }
  79};
  80MODULE_DEVICE_TABLE(i2c, hmc5843_id);
  81
  82static const struct of_device_id hmc5843_of_match[] = {
  83        { .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
  84        { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
  85        { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
  86        { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
  87        {}
  88};
  89MODULE_DEVICE_TABLE(of, hmc5843_of_match);
  90
  91static struct i2c_driver hmc5843_driver = {
  92        .driver = {
  93                .name   = "hmc5843",
  94                .pm     = HMC5843_PM_OPS,
  95                .of_match_table = hmc5843_of_match,
  96        },
  97        .id_table       = hmc5843_id,
  98        .probe          = hmc5843_i2c_probe,
  99        .remove         = hmc5843_i2c_remove,
 100};
 101module_i2c_driver(hmc5843_driver);
 102
 103MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
 104MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
 105MODULE_LICENSE("GPL");
 106