On Tue, 9 Apr 2024 at 18:41, AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> wrote: > > Il 09/04/24 17:20, Dmitry Baryshkov ha scritto: > > On Tue, Apr 09, 2024 at 02:02:09PM +0200, AngeloGioacchino Del Regno wrote: > >> The display IPs in MediaTek SoCs support being interconnected with > >> different instances of DDP IPs (for example, merge0 or merge1) and/or > >> with different DDP IPs (for example, rdma can be connected with either > >> color, dpi, dsi, merge, etc), forming a full Display Data Path that > >> ends with an actual display. > >> > >> The final display pipeline is effectively board specific, as it does > >> depend on the display that is attached to it, and eventually on the > >> sensors supported by the board (for example, Adaptive Ambient Light > >> would need an Ambient Light Sensor, otherwise it's pointless!), other > >> than the output type. > > > > With the color and gamma being in play, should the configuration be > > board-driver or rather use-case driven with the driver being able to > > reroute some of the blocks at runtime? > > > > The driver can already set some blocks to "BYPASS MODE" at runtime, meaning > that those will work as simple pass-through, performing *no* processing at > all, so that's addressed from the very beginning. > > This doesn't mean that a specific pipeline must always support the "DISP_GAMMA" > or the "DISP_CCOLOR" block(s) alone, or together, or in combination with another > specific block. I was thinking about slightly different case: do you have enough colour blocks to drive all outputs or do you have to select them for the particular output only? (excuse me, I didn't check the platform details). > For any other question, clarification, etc, I'm here :-) > > Cheers! > > >> > >> Add support for OF graphs to most of the MediaTek DDP (display) bindings > >> to add flexibility to build custom hardware paths, hence enabling board > >> specific configuration of the display pipeline and allowing to finally > >> migrate away from using hardcoded paths. > >> > >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> > > > -- With best wishes Dmitry
