sw_trigger.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Industrial I/O software trigger interface
 4 *
 5 * Copyright (c) 2015 Intel Corporation
 6 */
 7
 8#ifndef __IIO_SW_TRIGGER
 9#define __IIO_SW_TRIGGER
10
11#include <linux/module.h>
12#include <linux/device.h>
13#include <linux/iio/iio.h>
14#include <linux/configfs.h>
15
16#define module_iio_sw_trigger_driver(__iio_sw_trigger_type) \
17	module_driver(__iio_sw_trigger_type, iio_register_sw_trigger_type, \
18		      iio_unregister_sw_trigger_type)
19
20struct iio_sw_trigger_ops;
21
22struct iio_sw_trigger_type {
23	const char *name;
24	struct module *owner;
25	const struct iio_sw_trigger_ops *ops;
26	struct list_head list;
27	struct config_group *group;
28};
29
30struct iio_sw_trigger {
31	struct iio_trigger *trigger;
32	struct iio_sw_trigger_type *trigger_type;
33	struct config_group group;
34};
35
36struct iio_sw_trigger_ops {
37	struct iio_sw_trigger* (*probe)(const char *);
38	int (*remove)(struct iio_sw_trigger *);
39};
40
41static inline
42struct iio_sw_trigger *to_iio_sw_trigger(struct config_item *item)
43{
44	return container_of(to_config_group(item), struct iio_sw_trigger,
45			    group);
46}
47
48int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt);
49void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt);
50
51struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *);
52void iio_sw_trigger_destroy(struct iio_sw_trigger *);
53
54static inline
55void iio_swt_group_init_type_name(struct iio_sw_trigger *t,
56				  const char *name,
57				  const struct config_item_type *type)
58{
59#if IS_ENABLED(CONFIG_CONFIGFS_FS)
60	config_group_init_type_name(&t->group, name, type);
61#endif
62}
63
64#endif /* __IIO_SW_TRIGGER */