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author | Hans Verkuil <hans.verkuil@cisco.com> | 2015-10-28 00:50:37 -0200 |
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committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-12-18 13:48:19 -0200 |
commit | df9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch) | |
tree | a6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/pci/tw68/tw68-video.c | |
parent | ecc2fe20e63a21b7db23065ff061b66fbc08e08b (diff) | |
download | linux-stable-df9ecb0cad14b952a2865f8b3af86b2bbadfab45.tar.gz linux-stable-df9ecb0cad14b952a2865f8b3af86b2bbadfab45.tar.bz2 linux-stable-df9ecb0cad14b952a2865f8b3af86b2bbadfab45.zip |
[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/tw68/tw68-video.c')
-rw-r--r-- | drivers/media/pci/tw68/tw68-video.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c index 46642ef9151b..2e71af15ddb0 100644 --- a/drivers/media/pci/tw68/tw68-video.c +++ b/drivers/media/pci/tw68/tw68-video.c @@ -376,28 +376,28 @@ static int tw68_buffer_count(unsigned int size, unsigned int count) /* ------------------------------------------------------------- */ /* vb2 queue operations */ -static int tw68_queue_setup(struct vb2_queue *q, const void *parg, +static int tw68_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 tw68_dev *dev = vb2_get_drv_priv(q); unsigned tot_bufs = q->num_buffers + *num_buffers; + unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3; - sizes[0] = (dev->fmt->depth * dev->width * dev->height) >> 3; + if (tot_bufs < 2) + tot_bufs = 2; + tot_bufs = tw68_buffer_count(size, tot_bufs); + *num_buffers = tot_bufs - q->num_buffers; alloc_ctxs[0] = dev->alloc_ctx; /* - * We allow create_bufs, but only if the sizeimage is the same as the + * We allow create_bufs, but only if the sizeimage is >= as the * current sizeimage. The tw68_buffer_count calculation becomes quite * difficult otherwise. */ - if (fmt && fmt->fmt.pix.sizeimage < sizes[0]) - return -EINVAL; + if (*num_planes) + return sizes[0] < size ? -EINVAL : 0; *num_planes = 1; - if (tot_bufs < 2) - tot_bufs = 2; - tot_bufs = tw68_buffer_count(sizes[0], tot_bufs); - *num_buffers = tot_bufs - q->num_buffers; + sizes[0] = size; return 0; } |