diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2015-10-28 05:50:37 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-12-18 18:48:19 +0300 |
| commit | df9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch) | |
| tree | a6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/platform/davinci/vpif_display.c | |
| 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/davinci/vpif_display.c')
| -rw-r--r-- | drivers/media/platform/davinci/vpif_display.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c index fd2780306c17..534b50ace3a3 100644 --- a/drivers/media/platform/davinci/vpif_display.c +++ b/drivers/media/platform/davinci/vpif_display.c @@ -99,7 +99,6 @@ static int vpif_buffer_prepare(struct vb2_buffer *vb) /** * vpif_buffer_queue_setup : Callback function for buffer setup. * @vq: vb2_queue ptr - * @fmt: v4l2 format * @nbuffers: ptr to number of buffers requested by application * @nplanes:: contains number of distinct video planes needed to hold a frame * @sizes[]: contains the size (in bytes) of each plane. @@ -109,22 +108,24 @@ static int vpif_buffer_prepare(struct vb2_buffer *vb) * the buffer count and buffer size */ static int vpif_buffer_queue_setup(struct vb2_queue *vq, - const void *parg, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) { - const struct v4l2_format *fmt = parg; struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; + unsigned size = common->fmt.fmt.pix.sizeimage; - if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage) - return -EINVAL; + if (*nplanes) { + if (sizes[0] < size) + return -EINVAL; + size = sizes[0]; + } if (vq->num_buffers + *nbuffers < 3) *nbuffers = 3 - vq->num_buffers; *nplanes = 1; - sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage; + sizes[0] = size; alloc_ctxs[0] = common->alloc_ctx; /* Calculate the offset for Y and C data in the buffer */ |