Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / iio / pressure / st_pressure_i2c.c

diff --git a/kernel/drivers/iio/pressure/st_pressure_i2c.c b/kernel/drivers/iio/pressure/st_pressure_i2c.c
new file mode 100644 (file)
index 0000000..137788b
--- /dev/null
+++ b/kernel/drivers/iio/pressure/st_pressure_i2c.c
@@ -0,0 +1,94 @@
+/*
+ * 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"
+
+#ifdef CONFIG_OF
+static const struct of_device_id st_press_of_match[] = {
+       {
+               .compatible = "st,lps001wp-press",
+               .data = LPS001WP_PRESS_DEV_NAME,
+       },
+       {
+               .compatible = "st,lps25h-press",
+               .data = LPS25H_PRESS_DEV_NAME,
+       },
+       {
+               .compatible = "st,lps331ap-press",
+               .data = LPS331AP_PRESS_DEV_NAME,
+       },
+       {},
+};
+MODULE_DEVICE_TABLE(of, st_press_of_match);
+#else
+#define st_press_of_match NULL
+#endif
+
+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 *press_data;
+       int err;
+
+       indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
+       if (!indio_dev)
+               return -ENOMEM;
+
+       press_data = iio_priv(indio_dev);
+       st_sensors_of_i2c_probe(client, st_press_of_match);
+
+       st_sensors_i2c_configure(indio_dev, client, press_data);
+
+       err = st_press_common_probe(indio_dev);
+       if (err < 0)
+               return err;
+
+       return 0;
+}
+
+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[] = {
+       { LPS001WP_PRESS_DEV_NAME },
+       { LPS25H_PRESS_DEV_NAME },
+       { 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",
+               .of_match_table = of_match_ptr(st_press_of_match),
+       },
+       .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");