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Daniel Balutab662f802015-11-09 09:14:00 +02001/*
2 * Industrial I/O software trigger interface
3 *
4 * Copyright (c) 2015 Intel Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
9 */
10
11#ifndef __IIO_SW_TRIGGER
12#define __IIO_SW_TRIGGER
13
14#include <linux/module.h>
15#include <linux/device.h>
16#include <linux/iio/iio.h>
17#include <linux/configfs.h>
18
19#define module_iio_sw_trigger_driver(__iio_sw_trigger_type) \
20 module_driver(__iio_sw_trigger_type, iio_register_sw_trigger_type, \
21 iio_unregister_sw_trigger_type)
22
Daniel Balutab662f802015-11-09 09:14:00 +020023struct iio_sw_trigger_ops;
24
25struct iio_sw_trigger_type {
26 const char *name;
27 struct module *owner;
28 const struct iio_sw_trigger_ops *ops;
29 struct list_head list;
30 struct config_group *group;
31};
32
33struct iio_sw_trigger {
34 struct iio_trigger *trigger;
35 struct iio_sw_trigger_type *trigger_type;
36 struct config_group group;
37};
38
39struct iio_sw_trigger_ops {
40 struct iio_sw_trigger* (*probe)(const char *);
41 int (*remove)(struct iio_sw_trigger *);
42};
43
44static inline
45struct iio_sw_trigger *to_iio_sw_trigger(struct config_item *item)
46{
47 return container_of(to_config_group(item), struct iio_sw_trigger,
48 group);
49}
50
51int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt);
52void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt);
53
54struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *);
55void iio_sw_trigger_destroy(struct iio_sw_trigger *);
56
57int iio_sw_trigger_type_configfs_register(struct iio_sw_trigger_type *tt);
58void iio_sw_trigger_type_configfs_unregister(struct iio_sw_trigger_type *tt);
59
60static inline
61void iio_swt_group_init_type_name(struct iio_sw_trigger *t,
62 const char *name,
63 struct config_item_type *type)
64{
Lars-Peter Clausenb2f0c092016-07-11 13:50:01 +020065#if IS_ENABLED(CONFIG_CONFIGFS_FS)
Daniel Balutab662f802015-11-09 09:14:00 +020066 config_group_init_type_name(&t->group, name, type);
67#endif
68}
69
70#endif /* __IIO_SW_TRIGGER */