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authorDenis CIOCCA <denis.ciocca@st.com>2013-06-03 18:58:00 +0400
committerJonathan Cameron <jic23@kernel.org>2013-06-05 21:41:23 +0400
commit217494e5b780ad85485c1bb6382ce50b5fa2dc26 (patch)
tree26e9fd1c62477c099c05a3fbcdd265c287bc1ef8 /drivers/iio/pressure/st_pressure_spi.c
parent607a568ab69c5ac345a286267a27294888f8bb5f (diff)
downloadlinux-217494e5b780ad85485c1bb6382ce50b5fa2dc26.tar.xz
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>
Diffstat (limited to 'drivers/iio/pressure/st_pressure_spi.c')
-rw-r--r--drivers/iio/pressure/st_pressure_spi.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
new file mode 100644
index 000000000000..17a14907940a
--- /dev/null
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -0,0 +1,76 @@
+/*
+ * 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/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_pressure.h"
+
+static int st_press_spi_probe(struct spi_device *spi)
+{
+ 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 = &spi->dev;
+
+ st_sensors_spi_configure(indio_dev, spi, 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_spi_remove(struct spi_device *spi)
+{
+ st_press_common_remove(spi_get_drvdata(spi));
+
+ return 0;
+}
+
+static const struct spi_device_id st_press_id_table[] = {
+ { LPS331AP_PRESS_DEV_NAME },
+ {},
+};
+MODULE_DEVICE_TABLE(spi, st_press_id_table);
+
+static struct spi_driver st_press_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "st-press-spi",
+ },
+ .probe = st_press_spi_probe,
+ .remove = st_press_spi_remove,
+ .id_table = st_press_id_table,
+};
+module_spi_driver(st_press_driver);
+
+MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
+MODULE_LICENSE("GPL v2");