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b662f809 DB |
1 | /* |
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 | ||
b662f809 DB |
23 | struct iio_sw_trigger_ops; |
24 | ||
25 | struct 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 | ||
33 | struct iio_sw_trigger { | |
34 | struct iio_trigger *trigger; | |
35 | struct iio_sw_trigger_type *trigger_type; | |
36 | struct config_group group; | |
37 | }; | |
38 | ||
39 | struct iio_sw_trigger_ops { | |
40 | struct iio_sw_trigger* (*probe)(const char *); | |
41 | int (*remove)(struct iio_sw_trigger *); | |
42 | }; | |
43 | ||
44 | static inline | |
45 | struct 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 | ||
51 | int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt); | |
52 | void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt); | |
53 | ||
54 | struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *); | |
55 | void iio_sw_trigger_destroy(struct iio_sw_trigger *); | |
56 | ||
57 | int iio_sw_trigger_type_configfs_register(struct iio_sw_trigger_type *tt); | |
58 | void iio_sw_trigger_type_configfs_unregister(struct iio_sw_trigger_type *tt); | |
59 | ||
60 | static inline | |
61 | void iio_swt_group_init_type_name(struct iio_sw_trigger *t, | |
62 | const char *name, | |
63 | struct config_item_type *type) | |
64 | { | |
65 | #ifdef CONFIG_CONFIGFS_FS | |
66 | config_group_init_type_name(&t->group, name, type); | |
67 | #endif | |
68 | } | |
69 | ||
70 | #endif /* __IIO_SW_TRIGGER */ |