diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2012-07-26 12:30:00 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-30 22:31:53 (GMT) |
| commit | f0476a83d61a8004eb535a0b65721ca405421fe8 (patch) | |
| tree | 090e739691637494b9438412914ae91598ee017d /drivers/media/video/mx2_emmaprp.c | |
| parent | 6126b912c84240692e26c1b820a7097610eddf34 (diff) | |
| download | linux-f0476a83d61a8004eb535a0b65721ca405421fe8.tar.xz | |
[media] V4L: Add capability flags for memory-to-memory devices
This patch adds new V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE
capability flags that are intended to be used for memory-to-memory (M2M)
devices, instead of ORed V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT.
V4L2_CAP_VIDEO_M2M flag is added at the drivers, CAPTURE and OUTPUT
capability flags are left untouched and will be removed in future,
after a transition period required for existing applications to be
adapted to check only for V4L2_CAP_VIDEO_M2M.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/mx2_emmaprp.c')
| -rw-r--r-- | drivers/media/video/mx2_emmaprp.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/media/video/mx2_emmaprp.c b/drivers/media/video/mx2_emmaprp.c index 0bd5815..5f8a6f5 100644 --- a/drivers/media/video/mx2_emmaprp.c +++ b/drivers/media/video/mx2_emmaprp.c @@ -396,9 +396,13 @@ static int vidioc_querycap(struct file *file, void *priv, { strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); - cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT - | V4L2_CAP_STREAMING; - + /* + * This is only a mem-to-mem video device. The capture and output + * device capability flags are left only for backward compatibility + * and are scheduled for removal. + */ + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | + V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING; return 0; } |