linux/drivers/iio/pressure/st_pressure_i2c.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * STMicroelectronics pressures driver
   4 *
   5 * Copyright 2013 STMicroelectronics Inc.
   6 *
   7 * Denis Ciocca <denis.ciocca@st.com>
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/module.h>
  12#include <linux/slab.h>
  13#include <linux/i2c.h>
  14#include <linux/iio/iio.h>
  15
  16#include <linux/iio/common/st_sensors.h>
  17#include <linux/iio/common/st_sensors_i2c.h>
  18#include "st_pressure.h"
  19
  20static const struct of_device_id st_press_of_match[] = {
  21        {
  22                .compatible = "st,lps001wp-press",
  23                .data = LPS001WP_PRESS_DEV_NAME,
  24        },
  25        {
  26                .compatible = "st,lps25h-press",
  27                .data = LPS25H_PRESS_DEV_NAME,
  28        },
  29        {
  30                .compatible = "st,lps331ap-press",
  31                .data = LPS331AP_PRESS_DEV_NAME,
  32        },
  33        {
  34                .compatible = "st,lps22hb-press",
  35                .data = LPS22HB_PRESS_DEV_NAME,
  36        },
  37        {
  38                .compatible = "st,lps33hw",
  39                .data = LPS33HW_PRESS_DEV_NAME,
  40        },
  41        {
  42                .compatible = "st,lps35hw",
  43                .data = LPS35HW_PRESS_DEV_NAME,
  44        },
  45        {
  46                .compatible = "st,lps22hh",
  47                .data = LPS22HH_PRESS_DEV_NAME,
  48        },
  49        {},
  50};
  51MODULE_DEVICE_TABLE(of, st_press_of_match);
  52
  53#ifdef CONFIG_ACPI
  54static const struct acpi_device_id st_press_acpi_match[] = {
  55        {"SNO9210", LPS22HB},
  56        { },
  57};
  58MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
  59#endif
  60
  61static const struct i2c_device_id st_press_id_table[] = {
  62        { LPS001WP_PRESS_DEV_NAME, LPS001WP },
  63        { LPS25H_PRESS_DEV_NAME,  LPS25H },
  64        { LPS331AP_PRESS_DEV_NAME, LPS331AP },
  65        { LPS22HB_PRESS_DEV_NAME, LPS22HB },
  66        { LPS33HW_PRESS_DEV_NAME, LPS33HW },
  67        { LPS35HW_PRESS_DEV_NAME, LPS35HW },
  68        { LPS22HH_PRESS_DEV_NAME, LPS22HH },
  69        {},
  70};
  71MODULE_DEVICE_TABLE(i2c, st_press_id_table);
  72
  73static int st_press_i2c_probe(struct i2c_client *client,
  74                              const struct i2c_device_id *id)
  75{
  76        const struct st_sensor_settings *settings;
  77        struct st_sensor_data *press_data;
  78        struct iio_dev *indio_dev;
  79        int ret;
  80
  81        st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
  82
  83        settings = st_press_get_settings(client->name);
  84        if (!settings) {
  85                dev_err(&client->dev, "device name %s not recognized.\n",
  86                        client->name);
  87                return -ENODEV;
  88        }
  89
  90        indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
  91        if (!indio_dev)
  92                return -ENOMEM;
  93
  94        press_data = iio_priv(indio_dev);
  95        press_data->sensor_settings = (struct st_sensor_settings *)settings;
  96
  97        ret = st_sensors_i2c_configure(indio_dev, client);
  98        if (ret < 0)
  99                return ret;
 100
 101        ret = st_press_common_probe(indio_dev);
 102        if (ret < 0)
 103                return ret;
 104
 105        return 0;
 106}
 107
 108static int st_press_i2c_remove(struct i2c_client *client)
 109{
 110        st_press_common_remove(i2c_get_clientdata(client));
 111
 112        return 0;
 113}
 114
 115static struct i2c_driver st_press_driver = {
 116        .driver = {
 117                .name = "st-press-i2c",
 118                .of_match_table = st_press_of_match,
 119                .acpi_match_table = ACPI_PTR(st_press_acpi_match),
 120        },
 121        .probe = st_press_i2c_probe,
 122        .remove = st_press_i2c_remove,
 123        .id_table = st_press_id_table,
 124};
 125module_i2c_driver(st_press_driver);
 126
 127MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 128MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
 129MODULE_LICENSE("GPL v2");
 130