From 01c53fcfefae0e1e3d7578424241384ddf9a27a4 Mon Sep 17 00:00:00 2001 From: Janghyuck Kim Date: Fri, 23 Mar 2018 18:46:26 +0900 Subject: [PATCH] [media] v4l: introduce the fences capability Drivers capable of using fences (vb2 drivers) should report the V4L2_CAP_FENCES to userspace, so add this flag to the uapi. Change-Id: I61d994bfb768aced3242c304d6e4f22a8d806b1d Signed-off-by: Gustavo Padovan Signed-off-by: Janghyuck Kim --- Documentation/media/uapi/v4l/vidioc-querycap.rst | 3 +++ include/uapi/linux/videodev2.h | 1 + 2 files changed, 4 insertions(+) diff --git a/Documentation/media/uapi/v4l/vidioc-querycap.rst b/Documentation/media/uapi/v4l/vidioc-querycap.rst index 66fb1b3d6e6e..414016065309 100644 --- a/Documentation/media/uapi/v4l/vidioc-querycap.rst +++ b/Documentation/media/uapi/v4l/vidioc-querycap.rst @@ -254,6 +254,9 @@ specification the ioctl returns an ``EINVAL`` error code. * - ``V4L2_CAP_TOUCH`` - 0x10000000 - This is a touch device. + * - ``V4L2_CAP_FENCES`` + - 0x20000000 + - The device support explicit synchronization. * - ``V4L2_CAP_DEVICE_CAPS`` - 0x80000000 - The driver fills the ``device_caps`` field. This capability can diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 17e163b5036d..b9592e611da2 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -460,6 +460,7 @@ struct v4l2_capability { #define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */ #define V4L2_CAP_TOUCH 0x10000000 /* Is a touch device */ +#define V4L2_CAP_FENCES 0x20000000 /* Supports explicit synchronization */ #define V4L2_CAP_DEVICE_CAPS 0x80000000 /* sets device capabilities field */ -- 2.20.1