drivers/iio/accel/st_accel_spi.c

   1 /*
   2  * STMicroelectronics accelerometers driver
   3  *
   4  * Copyright 2012-2013 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_accel.h"
  20
  21 static int st_accel_spi_probe(struct spi_device *spi)
  22 {
  23         struct iio_dev *indio_dev;
  24         struct st_sensor_data *adata;
  25         int err;
  26
  27         indio_dev = iio_device_alloc(sizeof(*adata));
  28         if (indio_dev == NULL) {
  29                 err = -ENOMEM;
  30                 goto iio_device_alloc_error;
  31         }
  32
  33         adata = iio_priv(indio_dev);
  34         adata->dev = &spi->dev;
  35
  36         st_sensors_spi_configure(indio_dev, spi, adata);
  37
  38         err = st_accel_common_probe(indio_dev);
  39         if (err < 0)
  40                 goto st_accel_common_probe_error;
  41
  42         return 0;
  43
  44 st_accel_common_probe_error:
  45         iio_device_free(indio_dev);
  46 iio_device_alloc_error:
  47         return err;
  48 }
  49
  50 static int st_accel_spi_remove(struct spi_device *spi)
  51 {
  52         st_accel_common_remove(spi_get_drvdata(spi));
  53
  54         return 0;
  55 }
  56
  57 static const struct spi_device_id st_accel_id_table[] = {
  58         { LSM303DLH_ACCEL_DEV_NAME },
  59         { LSM303DLHC_ACCEL_DEV_NAME },
  60         { LIS3DH_ACCEL_DEV_NAME },
  61         { LSM330D_ACCEL_DEV_NAME },
  62         { LSM330DL_ACCEL_DEV_NAME },
  63         { LSM330DLC_ACCEL_DEV_NAME },
  64         { LIS331DLH_ACCEL_DEV_NAME },
  65         { LSM303DL_ACCEL_DEV_NAME },
  66         { LSM303DLM_ACCEL_DEV_NAME },
  67         { LSM330_ACCEL_DEV_NAME },
  68         {},
  69 };
  70 MODULE_DEVICE_TABLE(spi, st_accel_id_table);
  71
  72 static struct spi_driver st_accel_driver = {
  73         .driver = {
  74                 .owner = THIS_MODULE,
  75                 .name = "st-accel-spi",
  76         },
  77         .probe = st_accel_spi_probe,
  78         .remove = st_accel_spi_remove,
  79         .id_table = st_accel_id_table,
  80 };
  81 module_spi_driver(st_accel_driver);
  82
  83 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
  84 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
  85 MODULE_LICENSE("GPL v2");