LXR linux/drivers/iio/magnetometer/hmc5843

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