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authorHans Verkuil <hans.verkuil@cisco.com>2015-10-28 00:50:37 -0200
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-12-18 13:48:19 -0200
commitdf9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch)
treea6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/pci/cobalt
parentecc2fe20e63a21b7db23065ff061b66fbc08e08b (diff)
[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')
-rw-r--r--drivers/media/pci/cobalt/cobalt-v4l2.c12
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;
}