54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* The industrial I/O core - generic buffer interfaces.
|
|
*
|
|
* Copyright (c) 2008 Jonathan Cameron
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published by
|
|
* the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _IIO_BUFFER_GENERIC_H_
|
|
#define _IIO_BUFFER_GENERIC_H_
|
|
#include <linux/sysfs.h>
|
|
#include <linux/iio/iio.h>
|
|
|
|
struct iio_buffer;
|
|
|
|
void iio_buffer_set_attrs(struct iio_buffer *buffer,
|
|
const struct attribute **attrs);
|
|
|
|
int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
|
|
|
|
/**
|
|
* iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers
|
|
* @indio_dev: iio_dev structure for device.
|
|
* @data: sample data
|
|
* @timestamp: timestamp for the sample data
|
|
*
|
|
* Pushes data to the IIO device's buffers. If timestamps are enabled for the
|
|
* device the function will store the supplied timestamp as the last element in
|
|
* the sample data buffer before pushing it to the device buffers. The sample
|
|
* data buffer needs to be large enough to hold the additional timestamp
|
|
* (usually the buffer should be indio->scan_bytes bytes large).
|
|
*
|
|
* Returns 0 on success, a negative error code otherwise.
|
|
*/
|
|
static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
|
|
void *data, int64_t timestamp)
|
|
{
|
|
if (indio_dev->scan_timestamp) {
|
|
size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1;
|
|
((int64_t *)data)[ts_offset] = timestamp;
|
|
}
|
|
|
|
return iio_push_to_buffers(indio_dev, data);
|
|
}
|
|
|
|
bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
|
|
const unsigned long *mask);
|
|
|
|
void iio_device_attach_buffer(struct iio_dev *indio_dev,
|
|
struct iio_buffer *buffer);
|
|
|
|
#endif /* _IIO_BUFFER_GENERIC_H_ */
|