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3f72395e JC |
1 | /* The industrial I/O core, trigger consumer functions |
2 | * | |
3 | * Copyright (c) 2008-2011 Jonathan Cameron | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | */ | |
9 | ||
08d6005c LPC |
10 | #ifndef __LINUX_IIO_TRIGGER_CONSUMER_H__ |
11 | #define __LINUX_IIO_TRIGGER_CONSUMER_H__ | |
12 | ||
161e7f6d LPC |
13 | #include <linux/interrupt.h> |
14 | #include <linux/types.h> | |
15 | ||
16 | struct iio_dev; | |
17 | struct iio_trigger; | |
18 | ||
3f72395e JC |
19 | /** |
20 | * struct iio_poll_func - poll function pair | |
21 | * | |
22 | * @indio_dev: data specific to device (passed into poll func) | |
23 | * @h: the function that is actually run on trigger | |
24 | * @thread: threaded interrupt part | |
25 | * @type: the type of interrupt (basically if oneshot) | |
26 | * @name: name used to identify the trigger consumer. | |
27 | * @irq: the corresponding irq as allocated from the | |
28 | * trigger pool | |
29 | * @timestamp: some devices need a timestamp grabbed as soon | |
30 | * as possible after the trigger - hence handler | |
31 | * passes it via here. | |
32 | **/ | |
33 | struct iio_poll_func { | |
34 | struct iio_dev *indio_dev; | |
35 | irqreturn_t (*h)(int irq, void *p); | |
36 | irqreturn_t (*thread)(int irq, void *p); | |
37 | int type; | |
38 | char *name; | |
39 | int irq; | |
40 | s64 timestamp; | |
41 | }; | |
42 | ||
43 | ||
44 | struct iio_poll_func | |
45 | *iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p), | |
46 | irqreturn_t (*thread)(int irq, void *p), | |
47 | int type, | |
48 | struct iio_dev *indio_dev, | |
49 | const char *fmt, | |
50 | ...); | |
51 | void iio_dealloc_pollfunc(struct iio_poll_func *pf); | |
52 | irqreturn_t iio_pollfunc_store_time(int irq, void *p); | |
53 | ||
54 | void iio_trigger_notify_done(struct iio_trigger *trig); | |
55 | ||
56 | /* | |
57 | * Two functions for common case where all that happens is a pollfunc | |
58 | * is attached and detached from a trigger | |
59 | */ | |
3b99fb76 JC |
60 | int iio_triggered_buffer_postenable(struct iio_dev *indio_dev); |
61 | int iio_triggered_buffer_predisable(struct iio_dev *indio_dev); | |
08d6005c LPC |
62 | |
63 | #endif |