Re: [PATCH v7] rockchip/drm: vop2: add support for gamma LUT

Heiko Stübner
2024-12-05T08:57:30Z

Hi Piotr,

Am Mittwoch, 4. Dezember 2024, 16:45:21 CET schrieb Piotr Zalewski:
> I just noticed that after coming out of suspend gamma LUT is lost and must
> be rewritten by userspace.
>
> So I guess it will be needed to save LUT to a buffer and rewrite it after
> going out of suspend during modeset?

Most likely ... the old vop does this already too, so I guess you can
get inspiration from there. (gamma_set call in vop_crtc_atomic_enable())

> I checked the patch isn't yet in the "official" linux-next.

The patch is in drm-misc-next:
https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/4f537776340dab2b680a4d8554567f6884240d0b

so should turn up in linux-next at some point. This also means, please
provide a follow-up patch for the suspend handling.

Thanks a lot
Heiko