kernel/drivers/iio/pressure/st_pressure_spi.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/spi/spi.h>
  15 #include <linux/iio/iio.h>
  16
  17 #include <linux/iio/common/st_sensors.h>
  18 #include <linux/iio/common/st_sensors_spi.h>
  19 #include "st_pressure.h"
  20
  21 static int st_press_spi_probe(struct spi_device *spi)
  22 {
  23         struct iio_dev *indio_dev;
  24         struct st_sensor_data *press_data;
  25         int err;
  26
  27         indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
  28         if (indio_dev == NULL)
  29                 return -ENOMEM;
  30
  31         press_data = iio_priv(indio_dev);
  32
  33         st_sensors_spi_configure(indio_dev, spi, press_data);
  34
  35         err = st_press_common_probe(indio_dev);
  36         if (err < 0)
  37                 return err;
  38
  39         return 0;
  40 }
  41
  42 static int st_press_spi_remove(struct spi_device *spi)
  43 {
  44         st_press_common_remove(spi_get_drvdata(spi));
  45
  46         return 0;
  47 }
  48
  49 static const struct spi_device_id st_press_id_table[] = {
  50         { LPS001WP_PRESS_DEV_NAME },
  51         { LPS25H_PRESS_DEV_NAME },
  52         { LPS331AP_PRESS_DEV_NAME },
  53         {},
  54 };
  55 MODULE_DEVICE_TABLE(spi, st_press_id_table);
  56
  57 static struct spi_driver st_press_driver = {
  58         .driver = {
  59                 .owner = THIS_MODULE,
  60                 .name = "st-press-spi",
  61         },
  62         .probe = st_press_spi_probe,
  63         .remove = st_press_spi_remove,
  64         .id_table = st_press_id_table,
  65 };
  66 module_spi_driver(st_press_driver);
  67
  68 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  69 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
  70 MODULE_LICENSE("GPL v2");