From f35f5d72e70e6b91389eb98fcabf43b79f40587f Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Thu, 23 Aug 2018 09:56:22 -0400 Subject: media: videodev2.h: add new capabilities for buffer types VIDIOC_REQBUFS and VIDIOC_CREATE_BUFFERS will return capabilities telling userspace what the given buffer type is capable of. Signed-off-by: Hans Verkuil Reviewed-by: Tomasz Figa Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/videodev2.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'include/uapi/linux/videodev2.h') diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 2350151ce4ea..55d45a387dd2 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -856,9 +856,16 @@ struct v4l2_requestbuffers { __u32 count; __u32 type; /* enum v4l2_buf_type */ __u32 memory; /* enum v4l2_memory */ - __u32 reserved[2]; + __u32 capabilities; + __u32 reserved[1]; }; +/* capabilities for struct v4l2_requestbuffers and v4l2_create_buffers */ +#define V4L2_BUF_CAP_SUPPORTS_MMAP (1 << 0) +#define V4L2_BUF_CAP_SUPPORTS_USERPTR (1 << 1) +#define V4L2_BUF_CAP_SUPPORTS_DMABUF (1 << 2) +#define V4L2_BUF_CAP_SUPPORTS_REQUESTS (1 << 3) + /** * struct v4l2_plane - plane info for multi-planar buffers * @bytesused: number of bytes occupied by data in the plane (payload) @@ -2319,6 +2326,7 @@ struct v4l2_dbg_chip_info { * return: number of created buffers * @memory: enum v4l2_memory; buffer memory type * @format: frame format, for which buffers are requested + * @capabilities: capabilities of this buffer type. * @reserved: future extensions */ struct v4l2_create_buffers { @@ -2326,7 +2334,8 @@ struct v4l2_create_buffers { __u32 count; __u32 memory; struct v4l2_format format; - __u32 reserved[8]; + __u32 capabilities; + __u32 reserved[7]; }; /* -- cgit v1.2.3-59-g8ed1b