iio:pressure: Add STMicroelectronics pressures driver
This patch adds a generic pressure driver for STMicroelectronics
pressure sensors, currently it supports: LPS331AP.
Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
new file mode 100644
index 0000000..7cebcc7
--- /dev/null
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -0,0 +1,77 @@
+/*
+ * STMicroelectronics pressures driver
+ *
+ * Copyright 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/i2c.h>
+#include <linux/iio/iio.h>
+
+#include <linux/iio/common/st_sensors.h>
+#include <linux/iio/common/st_sensors_i2c.h>
+#include "st_pressure.h"
+
+static int st_press_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct iio_dev *indio_dev;
+ struct st_sensor_data *pdata;
+ int err;
+
+ indio_dev = iio_device_alloc(sizeof(*pdata));
+ if (indio_dev == NULL) {
+ err = -ENOMEM;
+ goto iio_device_alloc_error;
+ }
+
+ pdata = iio_priv(indio_dev);
+ pdata->dev = &client->dev;
+
+ st_sensors_i2c_configure(indio_dev, client, pdata);
+
+ err = st_press_common_probe(indio_dev);
+ if (err < 0)
+ goto st_press_common_probe_error;
+
+ return 0;
+
+st_press_common_probe_error:
+ iio_device_free(indio_dev);
+iio_device_alloc_error:
+ return err;
+}
+
+static int st_press_i2c_remove(struct i2c_client *client)
+{
+ st_press_common_remove(i2c_get_clientdata(client));
+
+ return 0;
+}
+
+static const struct i2c_device_id st_press_id_table[] = {
+ { LPS331AP_PRESS_DEV_NAME },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, st_press_id_table);
+
+static struct i2c_driver st_press_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "st-press-i2c",
+ },
+ .probe = st_press_i2c_probe,
+ .remove = st_press_i2c_remove,
+ .id_table = st_press_id_table,
+};
+module_i2c_driver(st_press_driver);
+
+MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
+MODULE_LICENSE("GPL v2");