Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / iio / magnetometer / st_magn_spi.c

diff --git a/kernel/drivers/iio/magnetometer/st_magn_spi.c b/kernel/drivers/iio/magnetometer/st_magn_spi.c
new file mode 100644 (file)
index 0000000..7adacf1
--- /dev/null
+++ b/kernel/drivers/iio/magnetometer/st_magn_spi.c
@@ -0,0 +1,71 @@
+/*
+ * 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 = devm_iio_device_alloc(&spi->dev, sizeof(*mdata));
+       if (!indio_dev)
+               return -ENOMEM;
+
+       mdata = iio_priv(indio_dev);
+
+       st_sensors_spi_configure(indio_dev, spi, mdata);
+
+       err = st_magn_common_probe(indio_dev);
+       if (err < 0)
+               return err;
+
+       return 0;
+}
+
+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");