Re: [PATCH v1 03/10] v4l: platform: Add Renesas CEU driver

jacopo mondi
2017-12-18T14:12:44Z

Hi Hans,
thanks for review comments

On Wed, Dec 13, 2017 at 01:03:03PM +0100, Hans Verkuil wrote:
> On 15/11/17 11:55, Jacopo Mondi wrote:
> > Add driver for Renesas Capture Engine Unit (CEU).
> > +
> > + /* Register the video device */
> > + strncpy(vdev->name, DRIVER_NAME, strlen(DRIVER_NAME));
> > + vdev->v4l2_dev = v4l2_dev;
> > + vdev->lock = &ceudev->mlock;
> > + vdev->queue = &ceudev->vb2_vq;
> > + vdev->ctrl_handler = v4l2_sd->ctrl_handler;
> > + vdev->fops = &ceu_fops;
> > + vdev->ioctl_ops = &ceu_ioctl_ops;
> > + vdev->release = ceu_vdev_release;
> > + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
>
> Why MPLANE? It doesn't appear to be needed since there are no multiplane
> (really: multibuffer) pixelformats defined.

The driver support NV12/21 and NV16/61 as output pixel formats (along
with single plane YUYV).

NV* formats are semi-planar, as luma is stored in one buffer, while
chrominances are stored together in a different one. Am I wrong?

> >
>
> Regards,

Thanks
j

>
> Hans