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author | Hans Verkuil <hans.verkuil@cisco.com> | 2015-10-28 05:50:37 +0300 |
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committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-12-18 18:48:19 +0300 |
commit | df9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch) | |
tree | a6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/pci/cobalt/cobalt-v4l2.c | |
parent | ecc2fe20e63a21b7db23065ff061b66fbc08e08b (diff) | |
download | linux-df9ecb0cad14b952a2865f8b3af86b2bbadfab45.tar.xz |
[media] vb2: drop v4l2_format argument from queue_setup
The queue_setup callback has a void pointer that is just for V4L2
and is the pointer to the v4l2_format struct that was passed to
VIDIOC_CREATE_BUFS. The idea was that drivers would use the information
from that struct to buffers suitable for the requested format.
After the vb2 split series this pointer is now a void pointer,
which is ugly, and the reality is that all existing drivers will
effectively just look at the sizeimage field of v4l2_format.
To make this more generic the queue_setup callback is changed:
the void pointer is dropped, instead if the *num_planes argument
is 0, then use the current format size, if it is non-zero, then
it contains the number of requested planes and the sizes array
contains the requested sizes. If either is unsupported, then return
-EINVAL, otherwise use the requested size(s).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/pci/cobalt/cobalt-v4l2.c')
-rw-r--r-- | drivers/media/pci/cobalt/cobalt-v4l2.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/media/pci/cobalt/cobalt-v4l2.c b/drivers/media/pci/cobalt/cobalt-v4l2.c index 8cc78c522ac9..c0ba458f6cf3 100644 --- a/drivers/media/pci/cobalt/cobalt-v4l2.c +++ b/drivers/media/pci/cobalt/cobalt-v4l2.c @@ -43,11 +43,10 @@ static const struct v4l2_dv_timings cea1080p60 = V4L2_DV_BT_CEA_1920X1080P60; /* vb2 DMA streaming ops */ -static int cobalt_queue_setup(struct vb2_queue *q, const void *parg, +static int cobalt_queue_setup(struct vb2_queue *q, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], void *alloc_ctxs[]) { - const struct v4l2_format *fmt = parg; struct cobalt_stream *s = q->drv_priv; unsigned size = s->stride * s->height; @@ -55,14 +54,11 @@ static int cobalt_queue_setup(struct vb2_queue *q, const void *parg, *num_buffers = 3; if (*num_buffers > NR_BUFS) *num_buffers = NR_BUFS; + alloc_ctxs[0] = s->cobalt->alloc_ctx; + if (*num_planes) + return sizes[0] < size ? -EINVAL : 0; *num_planes = 1; - if (fmt) { - if (fmt->fmt.pix.sizeimage < size) - return -EINVAL; - size = fmt->fmt.pix.sizeimage; - } sizes[0] = size; - alloc_ctxs[0] = s->cobalt->alloc_ctx; return 0; } |