3 * Copyright (c) 2012, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 #include <linux/device.h>
20 #include <linux/platform_device.h>
21 #include <linux/module.h>
22 #include <linux/interrupt.h>
23 #include <linux/irq.h>
24 #include <linux/slab.h>
25 #include <linux/hid-sensor-hub.h>
26 #include <linux/iio/iio.h>
27 #include <linux/iio/trigger.h>
28 #include <linux/iio/sysfs.h>
29 #include "hid-sensor-trigger.h"
31 static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
34 struct hid_sensor_common *st = iio_trigger_get_drvdata(trig);
38 if (sensor_hub_device_open(st->hsdev))
41 sensor_hub_device_close(st->hsdev);
43 state_val = state ? 1 : 0;
44 if (IS_ENABLED(CONFIG_HID_SENSOR_ENUM_BASE_QUIRKS))
46 st->data_ready = state;
47 sensor_hub_set_feature(st->hsdev, st->power_state.report_id,
48 st->power_state.index,
51 sensor_hub_set_feature(st->hsdev, st->report_state.report_id,
52 st->report_state.index,
58 void hid_sensor_remove_trigger(struct hid_sensor_common *attrb)
60 iio_trigger_unregister(attrb->trigger);
61 iio_trigger_free(attrb->trigger);
63 EXPORT_SYMBOL(hid_sensor_remove_trigger);
65 static const struct iio_trigger_ops hid_sensor_trigger_ops = {
67 .set_trigger_state = &hid_sensor_data_rdy_trigger_set_state,
70 int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
71 struct hid_sensor_common *attrb)
74 struct iio_trigger *trig;
76 trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id);
78 dev_err(&indio_dev->dev, "Trigger Allocate Failed\n");
83 trig->dev.parent = indio_dev->dev.parent;
84 iio_trigger_set_drvdata(trig, attrb);
85 trig->ops = &hid_sensor_trigger_ops;
86 ret = iio_trigger_register(trig);
89 dev_err(&indio_dev->dev, "Trigger Register Failed\n");
92 indio_dev->trig = attrb->trigger = trig;
97 iio_trigger_free(trig);
101 EXPORT_SYMBOL(hid_sensor_setup_trigger);
103 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
104 MODULE_DESCRIPTION("HID Sensor trigger processing");
105 MODULE_LICENSE("GPL");