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                 .compatible = "st,lps22df",
  52                 .data = LPS22DF_PRESS_DEV_NAME,
  53         },
  54         {},
  55 };
  56 MODULE_DEVICE_TABLE(of, st_press_of_match);
  57
  58 #ifdef CONFIG_ACPI
  59 static const struct acpi_device_id st_press_acpi_match[] = {
  60         {"SNO9210", LPS22HB},
  61         { },
  62 };
  63 MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
  64 #endif
  65
  66 static const struct i2c_device_id st_press_id_table[] = {
  67         { LPS001WP_PRESS_DEV_NAME, LPS001WP },
  68         { LPS25H_PRESS_DEV_NAME,  LPS25H },
  69         { LPS331AP_PRESS_DEV_NAME, LPS331AP },
  70         { LPS22HB_PRESS_DEV_NAME, LPS22HB },
  71         { LPS33HW_PRESS_DEV_NAME, LPS33HW },
  72         { LPS35HW_PRESS_DEV_NAME, LPS35HW },
  73         { LPS22HH_PRESS_DEV_NAME, LPS22HH },
  74         { LPS22DF_PRESS_DEV_NAME, LPS22DF },
  75         {},
  76 };
  77 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
  78
  79 static int st_press_i2c_probe(struct i2c_client *client)
  80 {
  81         const struct st_sensor_settings *settings;
  82         struct st_sensor_data *press_data;
  83         struct iio_dev *indio_dev;
  84         int ret;
  85
  86         st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
  87
  88         settings = st_press_get_settings(client->name);
  89         if (!settings) {
  90                 dev_err(&client->dev, "device name %s not recognized.\n",
  91                         client->name);
  92                 return -ENODEV;
  93         }
  94
  95         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
  96         if (!indio_dev)
  97                 return -ENOMEM;
  98
  99         press_data = iio_priv(indio_dev);
 100         press_data->sensor_settings = (struct st_sensor_settings *)settings;
 101
 102         ret = st_sensors_i2c_configure(indio_dev, client);
 103         if (ret < 0)
 104                 return ret;
 105
 106         ret = st_sensors_power_enable(indio_dev);
 107         if (ret)
 108                 return ret;
 109
 110         return st_press_common_probe(indio_dev);
 111 }
 112
 113 static struct i2c_driver st_press_driver = {
 114         .driver = {
 115                 .name = "st-press-i2c",
 116                 .of_match_table = st_press_of_match,
 117                 .acpi_match_table = ACPI_PTR(st_press_acpi_match),
 118         },
 119         .probe = st_press_i2c_probe,
 120         .id_table = st_press_id_table,
 121 };
 122 module_i2c_driver(st_press_driver);
 123
 124 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 125 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
 126 MODULE_LICENSE("GPL v2");
 127 MODULE_IMPORT_NS(IIO_ST_SENSORS);