diff options
Diffstat (limited to 'drivers/iio/magnetometer/st_magn_spi.c')
-rw-r--r-- | drivers/iio/magnetometer/st_magn_spi.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c new file mode 100644 index 000000000000..51adb797cb7d --- /dev/null +++ b/drivers/iio/magnetometer/st_magn_spi.c @@ -0,0 +1,79 @@ +/* + * STMicroelectronics magnetometers driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca <denis.ciocca@st.com> + * + * Licensed under the GPL-2. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/spi/spi.h> +#include <linux/iio/iio.h> + +#include <linux/iio/common/st_sensors.h> +#include <linux/iio/common/st_sensors_spi.h> +#include "st_magn.h" + +static int st_magn_spi_probe(struct spi_device *spi) +{ + struct iio_dev *indio_dev; + struct st_sensor_data *mdata; + int err; + + indio_dev = iio_device_alloc(sizeof(*mdata)); + if (indio_dev == NULL) { + err = -ENOMEM; + goto iio_device_alloc_error; + } + + mdata = iio_priv(indio_dev); + mdata->dev = &spi->dev; + + st_sensors_spi_configure(indio_dev, spi, mdata); + + err = st_magn_common_probe(indio_dev); + if (err < 0) + goto st_magn_common_probe_error; + + return 0; + +st_magn_common_probe_error: + iio_device_free(indio_dev); +iio_device_alloc_error: + return err; +} + +static int st_magn_spi_remove(struct spi_device *spi) +{ + struct iio_dev *indio_dev = spi_get_drvdata(spi); + st_magn_common_remove(indio_dev); + + return 0; +} + +static const struct spi_device_id st_magn_id_table[] = { + { LSM303DLHC_MAGN_DEV_NAME }, + { LSM303DLM_MAGN_DEV_NAME }, + { LIS3MDL_MAGN_DEV_NAME }, + {}, +}; +MODULE_DEVICE_TABLE(spi, st_magn_id_table); + +static struct spi_driver st_magn_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "st-magn-spi", + }, + .probe = st_magn_spi_probe, + .remove = st_magn_spi_remove, + .id_table = st_magn_id_table, +}; +module_spi_driver(st_magn_driver); + +MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); +MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver"); +MODULE_LICENSE("GPL v2"); |