Hi, On Wed, Feb 28, 2024 at 10:00:19PM +0000, Klymenko, Anatoliy wrote: > > > diff --git a/include/drm/drm_modeset_helper_vtables.h > > > b/include/drm/drm_modeset_helper_vtables.h > > > index 881b03e4dc28..7c21ae1fe3ad 100644 > > > --- a/include/drm/drm_modeset_helper_vtables.h > > > +++ b/include/drm/drm_modeset_helper_vtables.h > > > @@ -489,6 +489,37 @@ struct drm_crtc_helper_funcs { > > > bool in_vblank_irq, int *vpos, int *hpos, > > > ktime_t *stime, ktime_t *etime, > > > const struct drm_display_mode *mode); > > > + > > > + /** > > > + * @select_output_bus_format > > > + * > > > + * Called by the first connected DRM bridge to negotiate input media > > > + * bus format. CRTC is expected to pick preferable media formats from > > > + * the list supported by the DRM bridge chain. > > > > There's nothing restricting it to bridges here. Please rephrase this to remove the > > bridge mention. The user is typically going to be the encoder, and bridges are just > > an automagic implementation of an encoder. > > > > OK. I'll fix than in the next version. > > > And generally speaking, I'd really like to have an implementation available before > > merging this. > > > > Well, 2 instances of this callback implementations exist as drafts, as > this is the new API. A little bit of a chicken and egg problem. I'll > try to groom at least one of them into upstreamable shape and attach > it to the patch set. That's totally what I meant :) I basically don't want to have an interface that isn't used. If you provide an implementation in the same series, it's totally reasonable Maxime
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