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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/input
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/input')
-rw-r--r--drivers/input/touchscreen/sur40.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index d214f22ed305..3f3e2b12e5e7 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -644,22 +644,21 @@ static void sur40_disconnect(struct usb_interface *interface)
* minimum number: many DMA engines need a minimum of 2 buffers in the
* queue and you need to have another available for userspace processing.
*/
-static int sur40_queue_setup(struct vb2_queue *q, const void *parg,
+static int sur40_queue_setup(struct vb2_queue *q,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
{
- const struct v4l2_format *fmt = parg;
struct sur40_state *sur40 = vb2_get_drv_priv(q);
if (q->num_buffers + *nbuffers < 3)
*nbuffers = 3 - q->num_buffers;
+ alloc_ctxs[0] = sur40->alloc_ctx;
- if (fmt && fmt->fmt.pix.sizeimage < sur40_video_format.sizeimage)
- return -EINVAL;
+ if (*nplanes)
+ return sizes[0] < sur40_video_format.sizeimage ? -EINVAL : 0;
*nplanes = 1;
- sizes[0] = fmt ? fmt->fmt.pix.sizeimage : sur40_video_format.sizeimage;
- alloc_ctxs[0] = sur40->alloc_ctx;
+ sizes[0] = sur40_video_format.sizeimage;
return 0;
}