drivers/iio/pressure/st_pressure_i2c.c

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