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
20 struct iio_sw_trigger_ops;
21
22 struct 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
30 struct iio_sw_trigger {
31 struct iio_trigger *trigger;
32 struct iio_sw_trigger_type *trigger_type;
33 struct config_group group;
34 };
35
36 struct iio_sw_trigger_ops {
37 struct iio_sw_trigger* (*probe)(const char *);
38 int (*remove)(struct iio_sw_trigger *);
39 };
40
41 static inline
42 struct 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
48 int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt);
49 void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt);
50
51 struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *);
52 void iio_sw_trigger_destroy(struct iio_sw_trigger *);
53
54 static inline
55 void 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 */
65
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