This patch fixes flickering after resume from sleep on panel xingbangda,xbd599 (e.g. used in PinePhone). It was originally submitted by Ondrej Jirman in July 2020: https://lore.kernel.org/all/20200716123753.3552425-1-megous@xxxxxxxxxx/ The original patchset contained two patches. This submission fixes the patch that broke handling of the JH057N panel of the Purism Librem 5. In essence, it does not change any behavior towards the JH057N panel, but only affects the XDB599. The patch is just a refactoring of Ondřej's original patch, that is already used today by PinePhone distributions like PostmarketOS. I was torn between using function pointers and just calling msleep() with device specific delays. I decided to go with function pointers, because my understanding is that calling msleep(0), which would be required for waiting for the JH057N display to discharge, still results in a delay. The empty function I used has no side effect on that panel. The patch is based on drm-next. Ondřej, since this is just a refactoring, I would gladly add your SoB, if you wish so. Thanks, Frank Frank Oltmanns (1): drm/panel: st7703: Fix resume of XBD599 panel drivers/gpu/drm/panel/panel-sitronix-st7703.c | 40 ++++++++++++++++--- 1 file changed, 35 insertions(+), 5 deletions(-) -- 2.39.1
