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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* industrial I/O buffer definitions needed both in and out of kernel
*/
#ifndef _UAPI_IIO_BUFFER_H_
#define _UAPI_IIO_BUFFER_H_
#include <linux/types.h>
/* Flags for iio_dmabuf.flags */
#define IIO_BUFFER_DMABUF_CYCLIC (1 << 0)
#define IIO_BUFFER_DMABUF_SUPPORTED_FLAGS 0x00000001
/**
* struct iio_dmabuf - Descriptor for a single IIO DMABUF object
* @fd: file descriptor of the DMABUF object
* @flags: one or more IIO_BUFFER_DMABUF_* flags
* @bytes_used: number of bytes used in this DMABUF for the data transfer.
* Should generally be set to the DMABUF's size.
*/
struct iio_dmabuf {
__u32 fd;
__u32 flags;
__u64 bytes_used;
};
#define IIO_BUFFER_GET_FD_IOCTL _IOWR('i', 0x91, int)
#define IIO_BUFFER_DMABUF_ATTACH_IOCTL _IOW('i', 0x92, int)
#define IIO_BUFFER_DMABUF_DETACH_IOCTL _IOW('i', 0x93, int)
#define IIO_BUFFER_DMABUF_ENQUEUE_IOCTL _IOW('i', 0x94, struct iio_dmabuf)
#endif /* _UAPI_IIO_BUFFER_H_ */
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