diff options
Diffstat (limited to 'linux-headers/include/linux/iio/buffer.h')
| -rw-r--r-- | linux-headers/include/linux/iio/buffer.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/linux-headers/include/linux/iio/buffer.h b/linux-headers/include/linux/iio/buffer.h index e078162..16bbf84 100644 --- a/linux-headers/include/linux/iio/buffer.h +++ b/linux-headers/include/linux/iio/buffer.h @@ -5,6 +5,28 @@ #ifndef _IIO_BUFFER_H_ #define _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 /* _IIO_BUFFER_H_ */ |