Hi,
On 24 February 2016 at 16:01, Emil Velikov emil.l.velikov@gmail.com wrote:
On 23 February 2016 at 23:56, Rob Clark robdclark@gmail.com wrote:
On Tue, Feb 23, 2016 at 6:29 PM, Emil Velikov emil.l.velikov@gmail.com wrote:
On 2 February 2016 at 23:37, Zach Reizner zachr@google.com wrote:
The prime fd to handle ioctl was not used with rockchip before. Support was added in order to support potential uses (e.g. zero-copy video decode, camera).
Similar patch came around a few months ago and got this reply [1]. If the situation has changed (there is an open-source driver/user for this) it should be clearly mentioned in the commit message, as opposed to "in order to support potential uses".
I'm not sure, maybe those platforms can do a basic v4l <-> display thing w/ prime. Although upstream tends to hurt a bit for camera support..
It a bit unfortunate indeed. I wonder if companies cannot put more pressure on vendors to get things open/upstream - hint, hint ;-)
Wanted: Dead or alive - [upstream] open-source users :-P
V4L (media decode rather than camera IIRC) is indeed possible; there's a driver in the chromeos-3.18 downstream tree, and there's active work going on to get that included in mainline. So that would be a good user.
Cheers, Daniel