Hi, On 24 February 2016 at 16:01, Emil Velikov <emil.l.velikov at gmail.com> wrote: > On 23 February 2016 at 23:56, Rob Clark <robdclark at gmail.com> wrote: >> On Tue, Feb 23, 2016 at 6:29 PM, Emil Velikov <emil.l.velikov at gmail.com> >> wrote: >>> On 2 February 2016 at 23:37, Zach Reizner <zachr at 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
