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author | Hans Verkuil <hans.verkuil@cisco.com> | 2015-10-28 02:50:37 (GMT) |
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committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-12-18 15:48:19 (GMT) |
commit | df9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch) | |
tree | a6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/platform/marvell-ccic | |
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/platform/marvell-ccic')
-rw-r--r-- | drivers/media/platform/marvell-ccic/mcam-core.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c index 4f2ec88..7080a88 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -1049,24 +1049,25 @@ static int mcam_read_setup(struct mcam_camera *cam) */ static int mcam_vb_queue_setup(struct vb2_queue *vq, - const void *parg, unsigned int *nbufs, + unsigned int *nbufs, unsigned int *num_planes, unsigned int sizes[], void *alloc_ctxs[]) { - const struct v4l2_format *fmt = parg; struct mcam_camera *cam = vb2_get_drv_priv(vq); int minbufs = (cam->buffer_mode == B_DMA_contig) ? 3 : 2; + unsigned size = cam->pix_format.sizeimage; - if (fmt && fmt->fmt.pix.sizeimage < cam->pix_format.sizeimage) - return -EINVAL; - sizes[0] = fmt ? fmt->fmt.pix.sizeimage : cam->pix_format.sizeimage; - *num_planes = 1; /* Someday we have to support planar formats... */ if (*nbufs < minbufs) *nbufs = minbufs; if (cam->buffer_mode == B_DMA_contig) alloc_ctxs[0] = cam->vb_alloc_ctx; else if (cam->buffer_mode == B_DMA_sg) alloc_ctxs[0] = cam->vb_alloc_ctx_sg; + + if (*num_planes) + return sizes[0] < size ? -EINVAL : 0; + sizes[0] = size; + *num_planes = 1; /* Someday we have to support planar formats... */ return 0; } |