1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* The industrial I/O core - generic buffer interfaces. 3 * 4 * Copyright (c) 2008 Jonathan Cameron 5 */ 6 7#ifndef _IIO_BUFFER_GENERIC_H_ 8#define _IIO_BUFFER_GENERIC_H_ 9#include <linux/sysfs.h> 10#include <linux/iio/iio.h> 11 12struct iio_buffer; 13 14void iio_buffer_set_attrs(struct iio_buffer *buffer, 15 const struct attribute **attrs); 16 17int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data); 18 19/** 20 * iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers 21 * @indio_dev: iio_dev structure for device. 22 * @data: sample data 23 * @timestamp: timestamp for the sample data 24 * 25 * Pushes data to the IIO device's buffers. If timestamps are enabled for the 26 * device the function will store the supplied timestamp as the last element in 27 * the sample data buffer before pushing it to the device buffers. The sample 28 * data buffer needs to be large enough to hold the additional timestamp 29 * (usually the buffer should be indio->scan_bytes bytes large). 30 * 31 * Returns 0 on success, a negative error code otherwise. 32 */ 33static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev, 34 void *data, int64_t timestamp) 35{ 36 if (indio_dev->scan_timestamp) { 37 size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1; 38 ((int64_t *)data)[ts_offset] = timestamp; 39 } 40 41 return iio_push_to_buffers(indio_dev, data); 42} 43 44bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, 45 const unsigned long *mask); 46 47void iio_device_attach_buffer(struct iio_dev *indio_dev, 48 struct iio_buffer *buffer); 49 50#endif /* _IIO_BUFFER_GENERIC_H_ */ 51