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/* SPDX-License-Identifier: GPL-2.0-only */
/* The industrial I/O core - generic buffer interfaces.
*
* Copyright (c) 2008 Jonathan Cameron
*/
#ifndef _IIO_BUFFER_GENERIC_H_
#define _IIO_BUFFER_GENERIC_H_
#include <linux/sysfs.h>
#include <linux/iio/iio.h>
struct iio_buffer;
enum iio_buffer_direction {
IIO_BUFFER_DIRECTION_IN,
IIO_BUFFER_DIRECTION_OUT,
};
int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
int iio_pop_from_buffer(struct iio_buffer *buffer, 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);
}
int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev,
const void *data, size_t data_sz,
int64_t timestamp);
bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
const unsigned long *mask);
int iio_device_attach_buffer(struct iio_dev *indio_dev,
struct iio_buffer *buffer);
#endif /* _IIO_BUFFER_GENERIC_H_ */
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