Re: [RFC PATCH 0/3] drm driver for baytrail's vxd392

Rob Clark
2014-10-16T18:42:49Z

On Wed, Oct 15, 2014 at 4:13 AM, Thierry Reding
<thierry.reding@gmail.com> wrote:
> Finally, if this IP block is a VP8 video decoding engine only, I'm not
> sure DRM is the best subsystem for it. Traditionally video decoding has
> been done primarily in V4L2. I'm not sure that's the best fit given that
> it was originally designed for video capturing, but they've evolved some
> infrastructure to deal with encoding/decoding, whereas we have nothing
> like that at all in DRM.

v4l maybe works for some vid dec/enc hw if the hw does enough for
you.. the common ioctl approach might work for some hw, but I think
not really all. For the same reason we don't try to standardize the
3d/2d cmd submission ioctls across drivers..

BR,
-R