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 iio_dev
*indio_dev
)
60 iio_trigger_unregister(indio_dev
->trig
);
61 iio_trigger_free(indio_dev
->trig
);
62 indio_dev
->trig
= NULL
;
64 EXPORT_SYMBOL(hid_sensor_remove_trigger
);
66 static const struct iio_trigger_ops hid_sensor_trigger_ops
= {
68 .set_trigger_state
= &hid_sensor_data_rdy_trigger_set_state
,
71 int hid_sensor_setup_trigger(struct iio_dev
*indio_dev
, const char *name
,
72 struct hid_sensor_common
*attrb
)
75 struct iio_trigger
*trig
;
77 trig
= iio_trigger_alloc("%s-dev%d", name
, indio_dev
->id
);
79 dev_err(&indio_dev
->dev
, "Trigger Allocate Failed\n");
84 trig
->dev
.parent
= indio_dev
->dev
.parent
;
85 iio_trigger_set_drvdata(trig
, attrb
);
86 trig
->ops
= &hid_sensor_trigger_ops
;
87 ret
= iio_trigger_register(trig
);
90 dev_err(&indio_dev
->dev
, "Trigger Register Failed\n");
93 indio_dev
->trig
= trig
;
98 iio_trigger_free(trig
);
102 EXPORT_SYMBOL(hid_sensor_setup_trigger
);
104 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
105 MODULE_DESCRIPTION("HID Sensor trigger processing");
106 MODULE_LICENSE("GPL");