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 <[email protected]>
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/mod_devicetable.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
  20 static 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                 .compatible = "st,lps22df",
  51                 .data = LPS22DF_PRESS_DEV_NAME,
  52         },
  53         {},
  54 };
  55 MODULE_DEVICE_TABLE(of, st_press_of_match);
  56
  57 static const struct acpi_device_id st_press_acpi_match[] = {
  58         {"SNO9210", LPS22HB},
  59         { },
  60 };
  61 MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
  62
  63 static const struct i2c_device_id st_press_id_table[] = {
  64         { LPS001WP_PRESS_DEV_NAME, LPS001WP },
  65         { LPS25H_PRESS_DEV_NAME,  LPS25H },
  66         { LPS331AP_PRESS_DEV_NAME, LPS331AP },
  67         { LPS22HB_PRESS_DEV_NAME, LPS22HB },
  68         { LPS33HW_PRESS_DEV_NAME, LPS33HW },
  69         { LPS35HW_PRESS_DEV_NAME, LPS35HW },
  70         { LPS22HH_PRESS_DEV_NAME, LPS22HH },
  71         { LPS22DF_PRESS_DEV_NAME, LPS22DF },
  72         {},
  73 };
  74 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
  75
  76 static int st_press_i2c_probe(struct i2c_client *client)
  77 {
  78         const struct st_sensor_settings *settings;
  79         struct st_sensor_data *press_data;
  80         struct iio_dev *indio_dev;
  81         int ret;
  82
  83         st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
  84
  85         settings = st_press_get_settings(client->name);
  86         if (!settings) {
  87                 dev_err(&client->dev, "device name %s not recognized.\n",
  88                         client->name);
  89                 return -ENODEV;
  90         }
  91
  92         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
  93         if (!indio_dev)
  94                 return -ENOMEM;
  95
  96         press_data = iio_priv(indio_dev);
  97         press_data->sensor_settings = (struct st_sensor_settings *)settings;
  98
  99         ret = st_sensors_i2c_configure(indio_dev, client);
 100         if (ret < 0)
 101                 return ret;
 102
 103         ret = st_sensors_power_enable(indio_dev);
 104         if (ret)
 105                 return ret;
 106
 107         return st_press_common_probe(indio_dev);
 108 }
 109
 110 static struct i2c_driver st_press_driver = {
 111         .driver = {
 112                 .name = "st-press-i2c",
 113                 .of_match_table = st_press_of_match,
 114                 .acpi_match_table = st_press_acpi_match,
 115         },
 116         .probe = st_press_i2c_probe,
 117         .id_table = st_press_id_table,
 118 };
 119 module_i2c_driver(st_press_driver);
 120
 121 MODULE_AUTHOR("Denis Ciocca <[email protected]>");
 122 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
 123 MODULE_LICENSE("GPL v2");
 124 MODULE_IMPORT_NS(IIO_ST_SENSORS);