Re: [RFC PATCH 2/3] v4l: vsp1: extend VSP1 module API to allow DRM callback registration

2017-03-03 Thread Kieran Bingham
Hi Laurent, On 03/03/17 02:11, Laurent Pinchart wrote: > Hi Kieran, > > Thank you for the patch. > > On Wednesday 01 Mar 2017 13:12:55 Kieran Bingham wrote: >> To be able to perform page flips in DRM without flicker we need to be >> able to notify the rcar-du module when the VSP has completed it

Re: [RFC PATCH 2/3] v4l: vsp1: extend VSP1 module API to allow DRM callback registration

2017-03-02 Thread Laurent Pinchart
Hi Kieran, Thank you for the patch. On Wednesday 01 Mar 2017 13:12:55 Kieran Bingham wrote: > To be able to perform page flips in DRM without flicker we need to be > able to notify the rcar-du module when the VSP has completed its > processing. > > To synchronise the page flip events for userspa

[RFC PATCH 2/3] v4l: vsp1: extend VSP1 module API to allow DRM callback registration

2017-03-01 Thread Kieran Bingham
To be able to perform page flips in DRM without flicker we need to be able to notify the rcar-du module when the VSP has completed its processing. To synchronise the page flip events for userspace, we move the required event through the VSP to track the data flow. When the frame is completed, the