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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/media/platform/s3c-camif
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/platform/s3c-camif')
-rw-r--r--drivers/media/platform/s3c-camif/camif-capture.c33
1 files changed, 11 insertions, 22 deletions
diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c
index 537b858cb94a..68e651295ded 100644
--- a/drivers/media/platform/s3c-camif/camif-capture.c
+++ b/drivers/media/platform/s3c-camif/camif-capture.c
@@ -435,39 +435,28 @@ static void stop_streaming(struct vb2_queue *vq)
camif_stop_capture(vp);
}
-static int queue_setup(struct vb2_queue *vq, const void *parg,
+static int queue_setup(struct vb2_queue *vq,
unsigned int *num_buffers, unsigned int *num_planes,
unsigned int sizes[], void *allocators[])
{
- const struct v4l2_format *pfmt = parg;
- const struct v4l2_pix_format *pix = NULL;
struct camif_vp *vp = vb2_get_drv_priv(vq);
struct camif_dev *camif = vp->camif;
struct camif_frame *frame = &vp->out_frame;
- const struct camif_fmt *fmt;
+ const struct camif_fmt *fmt = vp->out_fmt;
unsigned int size;
- if (pfmt) {
- pix = &pfmt->fmt.pix;
- fmt = s3c_camif_find_format(vp, &pix->pixelformat, -1);
- if (fmt == NULL)
- return -EINVAL;
- size = (pix->width * pix->height * fmt->depth) / 8;
- } else {
- fmt = vp->out_fmt;
- if (fmt == NULL)
- return -EINVAL;
- size = (frame->f_width * frame->f_height * fmt->depth) / 8;
- }
-
- *num_planes = 1;
+ if (fmt == NULL)
+ return -EINVAL;
- if (pix)
- sizes[0] = max(size, pix->sizeimage);
- else
- sizes[0] = size;
+ size = (frame->f_width * frame->f_height * fmt->depth) / 8;
allocators[0] = camif->alloc_ctx;
+ if (*num_planes)
+ return sizes[0] < size ? -EINVAL : 0;
+
+ *num_planes = 1;
+ sizes[0] = size;
+
pr_debug("size: %u\n", sizes[0]);
return 0;
}