From 137272cdf7cc5be835f44216e6003769d1638480 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 11 Oct 2019 06:32:40 -0300 Subject: media: vb2: add V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF This patch adds support for the V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF flag. It also adds a new V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF capability. Drivers should set vb2_queue->subsystem_flags to VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF to indicate support for this flag. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/videobuf2-core.h | 3 +++ include/media/videobuf2-v4l2.h | 5 +++++ 2 files changed, 8 insertions(+) (limited to 'include/media') diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 640aabe69450..a2b2208b02da 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -505,6 +505,8 @@ struct vb2_buf_ops { * @buf_ops: callbacks to deliver buffer information. * between user-space and kernel-space. * @drv_priv: driver private data. + * @subsystem_flags: Flags specific to the subsystem (V4L2/DVB/etc.). Not used + * by the vb2 core. * @buf_struct_size: size of the driver-specific buffer structure; * "0" indicates the driver doesn't want to use a custom buffer * structure type. for example, ``sizeof(struct vb2_v4l2_buffer)`` @@ -571,6 +573,7 @@ struct vb2_queue { const struct vb2_buf_ops *buf_ops; void *drv_priv; + u32 subsystem_flags; unsigned int buf_struct_size; u32 timestamp_flags; gfp_t gfp_flags; diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h index 8a10889dc2fd..59bf33a12648 100644 --- a/include/media/videobuf2-v4l2.h +++ b/include/media/videobuf2-v4l2.h @@ -33,6 +33,7 @@ * @timecode: frame timecode. * @sequence: sequence count of this frame. * @request_fd: the request_fd associated with this buffer + * @is_held: if true, then this capture buffer was held * @planes: plane information (userptr/fd, length, bytesused, data_offset). * * Should contain enough information to be able to cover all the fields @@ -46,9 +47,13 @@ struct vb2_v4l2_buffer { struct v4l2_timecode timecode; __u32 sequence; __s32 request_fd; + bool is_held; struct vb2_plane planes[VB2_MAX_PLANES]; }; +/* VB2 V4L2 flags as set in vb2_queue.subsystem_flags */ +#define VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 0) + /* * to_vb2_v4l2_buffer() - cast struct vb2_buffer * to struct vb2_v4l2_buffer * */ -- cgit v1.2.3