1 /* 2 * STMicroelectronics magnetometers 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_magn.h" 20 21 static int st_magn_spi_probe(struct spi_device *spi) 22 { 23 struct iio_dev *indio_dev; 24 struct st_sensor_data *mdata; 25 int err; 26 27 indio_dev = iio_device_alloc(sizeof(*mdata)); 28 if (indio_dev == NULL) { 29 err = -ENOMEM; 30 goto iio_device_alloc_error; 31 } 32 33 mdata = iio_priv(indio_dev); 34 mdata->dev = &spi->dev; 35 36 st_sensors_spi_configure(indio_dev, spi, mdata); 37 38 err = st_magn_common_probe(indio_dev); 39 if (err < 0) 40 goto st_magn_common_probe_error; 41 42 return 0; 43 44 st_magn_common_probe_error: 45 iio_device_free(indio_dev); 46 iio_device_alloc_error: 47 return err; 48 } 49 50 static int st_magn_spi_remove(struct spi_device *spi) 51 { 52 struct iio_dev *indio_dev = spi_get_drvdata(spi); 53 st_magn_common_remove(indio_dev); 54 55 return 0; 56 } 57 58 static const struct spi_device_id st_magn_id_table[] = { 59 { LSM303DLHC_MAGN_DEV_NAME }, 60 { LSM303DLM_MAGN_DEV_NAME }, 61 { LIS3MDL_MAGN_DEV_NAME }, 62 {}, 63 }; 64 MODULE_DEVICE_TABLE(spi, st_magn_id_table); 65 66 static struct spi_driver st_magn_driver = { 67 .driver = { 68 .owner = THIS_MODULE, 69 .name = "st-magn-spi", 70 }, 71 .probe = st_magn_spi_probe, 72 .remove = st_magn_spi_remove, 73 .id_table = st_magn_id_table, 74 }; 75 module_spi_driver(st_magn_driver); 76 77 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 78 MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver"); 79 MODULE_LICENSE("GPL v2"); 80