From a1367f1b260d29e9b9fb20d8e2f39f1e74fa6c3b Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki <s.nawrocki@samsung.com> Date: Thu, 26 Jul 2012 09:30:50 -0300 Subject: [media] Feature removal: using capture and output capabilities for m2m devices Identifying a memory-to-memory video device through an ORed output and capture capability flags is not reliable. Schedule this for removal. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> --- Documentation/feature-removal-schedule.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index b998030..dbefb17 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -576,3 +576,17 @@ Why: The regular V4L2 selections and the subdev selection API originally any instabilities in the user space interface. After few cycles these backward compatibility definitions will be removed. Who: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> + +---------------------------- + +What: Using V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags + to indicate a V4L2 memory-to-memory device capability +When: 3.8 +Why: New drivers should use new V4L2_CAP_VIDEO_M2M capability flag + to indicate a V4L2 video memory-to-memory (M2M) device and + applications can now identify a M2M video device by checking + for V4L2_CAP_VIDEO_M2M, with VIDIOC_QUERYCAP ioctl. Using ORed + V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags for M2M + devices is ambiguous and may lead, for example, to identifying + a M2M device as a video capture or output device. +Who: Sylwester Nawrocki <s.nawrocki@samsung.com> -- cgit v1.1