Re: [PATCH v2 6/6] drm: Add helper for simple display pipeline

[Noralf TrÃnnes]

Den 12.05.2016 10:11, skrev Daniel Vetter:
> On Wed, May 11, 2016 at 07:09:10PM +0200, Daniel Vetter wrote:
> > On Wed, May 11, 2016 at 06:09:22PM +0200, Noralf Trønnes wrote:
> > > +/**
> > > + * drm_simple_display_pipe_init - Initialize a simple display pipeline
> > > + * @dev: DRM device
> > > + * @pipe: simple display pipe object to initialize
> > > + * @funcs: callbacks for the display pipe (optional)
> > > + * @formats: array of supported formats (%DRM_FORMAT_*)
> > > + * @format_count: number of elements in @formats
> > > + * @connector: connector to attach and register
> > > + *
> > > + * Sets up a display pipeline which consist of a really simple
> > > + * plane-crtc-encoder pipe coupled with the provided connector.
> > How are drivers supposed to release this stuff again? Maybe add:
> >
> > "Teardown of a simple display pipe is all handled automatically by the drm
> > core through calling drm_mode_config_cleanup()."
> Thought a bit more about this, maybe we should also add "Drivers
> afterwards need to release the memory for the structure themselves."
>
> Btw one other thing I realized is that there's no atomic_commit for this.
> How do you plane to implement async commit? No need to address this right
> away, we can discuss it when you've rebased tinydrm and submit that for
> review.
> -Daniel

I don't follow you here. Isn't this atomic_commit:

drm_atomic_helper_commit => drm_atomic_helper_commit_planes =>
drm_simple_kms_plane_atomic_update => pipe->funcs->update

Noralf.