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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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