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 10 #ifndef __LINUX_IIO_TRIGGER_CONSUMER_H__ 11 #define __LINUX_IIO_TRIGGER_CONSUMER_H__ 12 13 #include <linux/interrupt.h> 14 #include <linux/types.h> 15 16 struct iio_dev; 17 struct iio_trigger; 18 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 */ 60 int iio_triggered_buffer_postenable(struct iio_dev *indio_dev); 61 int iio_triggered_buffer_predisable(struct iio_dev *indio_dev); 62 63 #endif 64
