LXR linux/drivers/iio/humidity/hts221

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * STMicroelectronics hts221 i2c driver
   4 *
   5 * Copyright 2016 STMicroelectronics Inc.
   6 *
   7 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/module.h>
  12#include <linux/acpi.h>
  13#include <linux/i2c.h>
  14#include <linux/slab.h>
  15#include <linux/regmap.h>
  16
  17#include "hts221.h"
  18
  19#define HTS221_I2C_AUTO_INCREMENT       BIT(7)
  20
  21static const struct regmap_config hts221_i2c_regmap_config = {
  22        .reg_bits = 8,
  23        .val_bits = 8,
  24        .write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
  25        .read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
  26};
  27
  28static int hts221_i2c_probe(struct i2c_client *client,
  29                            const struct i2c_device_id *id)
  30{
  31        struct regmap *regmap;
  32
  33        regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
  34        if (IS_ERR(regmap)) {
  35                dev_err(&client->dev, "Failed to register i2c regmap %d\n",
  36                        (int)PTR_ERR(regmap));
  37                return PTR_ERR(regmap);
  38        }
  39
  40        return hts221_probe(&client->dev, client->irq,
  41                            client->name, regmap);
  42}
  43
  44static const struct acpi_device_id hts221_acpi_match[] = {
  45        {"SMO9100", 0},
  46        { },
  47};
  48MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);
  49
  50static const struct of_device_id hts221_i2c_of_match[] = {
  51        { .compatible = "st,hts221", },
  52        {},
  53};
  54MODULE_DEVICE_TABLE(of, hts221_i2c_of_match);
  55
  56static const struct i2c_device_id hts221_i2c_id_table[] = {
  57        { HTS221_DEV_NAME },
  58        {},
  59};
  60MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
  61
  62static struct i2c_driver hts221_driver = {
  63        .driver = {
  64                .name = "hts221_i2c",
  65                .pm = &hts221_pm_ops,
  66                .of_match_table = of_match_ptr(hts221_i2c_of_match),
  67                .acpi_match_table = ACPI_PTR(hts221_acpi_match),
  68        },
  69        .probe = hts221_i2c_probe,
  70        .id_table = hts221_i2c_id_table,
  71};
  72module_i2c_driver(hts221_driver);
  73
  74MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
  75MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
  76MODULE_LICENSE("GPL v2");
  77