drivers/iio/pressure/st_pressure_i2c.c

   1 /*
   2  * STMicroelectronics pressures driver
   3  *
   4  * Copyright 2013 STMicroelectronics Inc.
   5  *
   6  * Denis Ciocca <denis.ciocca@st.com>
   7  *
   8  * Licensed under the GPL-2.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/slab.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 #ifdef CONFIG_OF
  22 static const struct of_device_id st_press_of_match[] = {
  23         {
  24                 .compatible = "st,lps001wp-press",
  25                 .data = LPS001WP_PRESS_DEV_NAME,
  26         },
  27         {
  28                 .compatible = "st,lps25h-press",
  29                 .data = LPS25H_PRESS_DEV_NAME,
  30         },
  31         {
  32                 .compatible = "st,lps331ap-press",
  33                 .data = LPS331AP_PRESS_DEV_NAME,
  34         },
  35         {},
  36 };
  37 MODULE_DEVICE_TABLE(of, st_press_of_match);
  38 #else
  39 #define st_press_of_match NULL
  40 #endif
  41
  42 static int st_press_i2c_probe(struct i2c_client *client,
  43                                                 const struct i2c_device_id *id)
  44 {
  45         struct iio_dev *indio_dev;
  46         struct st_sensor_data *press_data;
  47         int err;
  48
  49         indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
  50         if (!indio_dev)
  51                 return -ENOMEM;
  52
  53         press_data = iio_priv(indio_dev);
  54         st_sensors_of_i2c_probe(client, st_press_of_match);
  55
  56         st_sensors_i2c_configure(indio_dev, client, press_data);
  57
  58         err = st_press_common_probe(indio_dev);
  59         if (err < 0)
  60                 return err;
  61
  62         return 0;
  63 }
  64
  65 static int st_press_i2c_remove(struct i2c_client *client)
  66 {
  67         st_press_common_remove(i2c_get_clientdata(client));
  68
  69         return 0;
  70 }
  71
  72 static const struct i2c_device_id st_press_id_table[] = {
  73         { LPS001WP_PRESS_DEV_NAME },
  74         { LPS25H_PRESS_DEV_NAME },
  75         { LPS331AP_PRESS_DEV_NAME },
  76         {},
  77 };
  78 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
  79
  80 static struct i2c_driver st_press_driver = {
  81         .driver = {
  82                 .name = "st-press-i2c",
  83                 .of_match_table = of_match_ptr(st_press_of_match),
  84         },
  85         .probe = st_press_i2c_probe,
  86         .remove = st_press_i2c_remove,
  87         .id_table = st_press_id_table,
  88 };
  89 module_i2c_driver(st_press_driver);
  90
  91 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  92 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
  93 MODULE_LICENSE("GPL v2");