summaryrefslogtreecommitdiff
path: root/drivers/media/pci/cx25821/cx25821-video.c
diff options
context:
space:
mode:
authorHans Verkuil <hans.verkuil@cisco.com>2015-10-28 05:50:37 +0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-12-18 18:48:19 +0300
commitdf9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch)
treea6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/pci/cx25821/cx25821-video.c
parentecc2fe20e63a21b7db23065ff061b66fbc08e08b (diff)
downloadlinux-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/cx25821/cx25821-video.c')
-rw-r--r--drivers/media/pci/cx25821/cx25821-video.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/media/pci/cx25821/cx25821-video.c b/drivers/media/pci/cx25821/cx25821-video.c
index 26e3e296d615..644373dd2525 100644
--- a/drivers/media/pci/cx25821/cx25821-video.c
+++ b/drivers/media/pci/cx25821/cx25821-video.c
@@ -141,20 +141,20 @@ int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
return handled;
}
-static int cx25821_queue_setup(struct vb2_queue *q, const void *parg,
+static int cx25821_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 cx25821_channel *chan = q->drv_priv;
unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
- if (fmt && fmt->fmt.pix.sizeimage < size)
- return -EINVAL;
+ alloc_ctxs[0] = chan->dev->alloc_ctx;
+
+ if (*num_planes)
+ return sizes[0] < size ? -EINVAL : 0;
*num_planes = 1;
- sizes[0] = fmt ? fmt->fmt.pix.sizeimage : size;
- alloc_ctxs[0] = chan->dev->alloc_ctx;
+ sizes[0] = size;
return 0;
}