Quelle  hts221_i2c.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * STMicroelectronics hts221 i2c driver
 *
 * Copyright 2016 STMicroelectronics Inc.
 *
 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>

#include "hts221.h"

#define HTS221_I2C_AUTO_INCREMENT BIT(7)

static const struct regmap_config hts221_i2c_regmap_config = {
 .reg_bits = 8,
 .val_bits = 8,
 .write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
 .read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
};

static int hts221_i2c_probe(struct i2c_client *client)
{
 struct regmap *regmap;

 regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
 if (IS_ERR(regmap)) {
  dev_err(&client->dev, "Failed to register i2c regmap %ld\n",
   PTR_ERR(regmap));
  return PTR_ERR(regmap);
 }

 return hts221_probe(&client->dev, client->irq,
       client->name, regmap);
}

static const struct acpi_device_id hts221_acpi_match[] = {
 {"SMO9100", 0},
 { }
};
MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);

static const struct of_device_id hts221_i2c_of_match[] = {
 { .compatible = "st,hts221", },
 { }
};
MODULE_DEVICE_TABLE(of, hts221_i2c_of_match);

static const struct i2c_device_id hts221_i2c_id_table[] = {
 { HTS221_DEV_NAME },
 { }
};
MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);

static struct i2c_driver hts221_driver = {
 .driver = {
  .name = "hts221_i2c",
  .pm = pm_sleep_ptr(&hts221_pm_ops),
  .of_match_table = hts221_i2c_of_match,
  .acpi_match_table = hts221_acpi_match,
 },
 .probe = hts221_i2c_probe,
 .id_table = hts221_i2c_id_table,
};
module_i2c_driver(hts221_driver);

MODULE_AUTHOR("Lorenzo Bianconi ");
MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("IIO_HTS221");