Initial file dump from open source releaseHEADmaster

1 files changed, 92 insertions, 0 deletions

diff --git a/drivers/iio/imu/inv_mpu/inv_mpu_trigger.c b/drivers/iio/imu/inv_mpu/inv_mpu_trigger.c
new file mode 100644
index 00000000..4e01ad15
--- /dev/null
+++ b/drivers/iio/imu/inv_mpu/inv_mpu_trigger.c
@@ -0,0 +1,92 @@
+/*
+* Copyright (C) 2012 Invensense, Inc.
+*
+* This software is licensed under the terms of the GNU General Public
+* License version 2, as published by the Free Software Foundation, and
+* may be copied, distributed, and modified under those terms.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+*/
+
+/**
+ *  @addtogroup  DRIVERS
+ *  @brief       Hardware drivers.
+ *
+ *  @{
+ *      @file    inv_mpu_trigger.c
+ *      @brief   A sysfs device driver for Invensense devices
+ *      @details This file is part of inv mpu iio driver code
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/sysfs.h>
+#include <linux/jiffies.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/kfifo.h>
+#include <linux/poll.h>
+#include <linux/miscdevice.h>
+#include <linux/spinlock.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+
+#include "inv_mpu_iio.h"
+
+/**
+ * inv_mpu_data_rdy_trigger_set_state() set data ready interrupt state
+ **/
+static int inv_mpu_data_rdy_trigger_set_state(struct iio_trigger *trig,
+						bool state)
+{
+	return 0;
+}
+
+static const struct iio_trigger_ops inv_mpu_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &inv_mpu_data_rdy_trigger_set_state,
+};
+
+int inv_mpu_probe_trigger(struct iio_dev *indio_dev)
+{
+	int ret;
+	struct inv_mpu_iio_s *st = iio_priv(indio_dev);
+
+	st->trig = iio_trigger_alloc("%s-dev%d",
+					indio_dev->name,
+					indio_dev->id);
+	if (st->trig == NULL)
+		return -ENOMEM;
+	st->trig->dev.parent = &st->client->dev;
+	st->trig->ops = &inv_mpu_trigger_ops;
+	ret = iio_trigger_register(st->trig);
+
+	if (ret) {
+		iio_trigger_free(st->trig);
+		return -EPERM;
+	}
+	indio_dev->trig = st->trig;
+
+	return 0;
+}
+
+void inv_mpu_remove_trigger(struct iio_dev *indio_dev)
+{
+	struct inv_mpu_iio_s *st = iio_priv(indio_dev);
+
+	iio_trigger_unregister(st->trig);
+	iio_trigger_free(st->trig);
+}
+/**
+ *  @}
+ */
+