Hi Claus, On Tue, Aug 22, 2023 at 02:52:35PM +0200, claus.stovgaard@xxxxxxxxx wrote: > On Mon, 2023-08-21 at 15:19 +0300, Laurent Pinchart wrote: > > On Mon, Aug 21, 2023 at 12:07:59PM +0200, Claus Stovgaard wrote: > > > On Mon, 2023-08-21 at 08:55 +0200, Claus Stovgaard wrote: > > > > > > > > Looking forward to try your branch. Looks much cleaner, and would be > > > > nice to get working :) > > > > > > I got it to work on Dell XPS 9320. > > > > I'm glad to hear this ! Even if PSYS support will be needed to make the > > IPU6 truly usable, it is a very nice step in the right direction. > > > > Would you be interested in adding initial support for the IPU6 in > > libcamera ? :-) Given that only the ISYS is currently available, and > > given the simplicity of the hardware, it may be as easy as a single line > > addition. > > Hi Laurent. > > Thanks for your offer - it might come in handy to have libcamera > support, but I don't need it right now. > > My use case is a bit special. I am working as Embedded Engineer for > Ambu A/S, where we have 2 display units, named aView2 and aBox2, for > single use endoscopy. > > https://youtu.be/eDcSrHxzZ70?t=14 > > Those units is based on the intel Apollo Lake with IPU4, where only the > isys part of IPU4 is used, as a FPGA in front of the Apollo Lake is > used for image processing. So the image stream is sent to the Apollo > Lake as RGB data - and is using the IPU4 isys as DMA. E.g. like below. > > scope -> FPGA -> tc358748 -> IPU4-> memory Out of curiosity, is this because the image processing requirements are very device-specific, or was that done to work around the fact that the IPU4 doesn't provide a good ISP driver ? > We need to support this for newer kernels, then provided from intel > (4.14 / 4.19) *OUCH*. Seriously ?? :-( > and looking at the code, it seems like a better option to > base it on this IPU6 isys driver and extend it to cover IPU4 isys also. > > So we are being inspired by the provided 4.14 / 4.19 kernel, and then > work on the IPU6 codebase. > > Our current status is that my coworker has the Buttress to load the > firmware on IPU4, and we will continue work from there. > > My end goal would be that an upstream vanilla kernel is able to support > the isys part of IPU4, and the complete IPU6. It would be very nice to have an upstream driver for the IPU4 CSI-2 receivers indeed. Looking forward to seeing one :-) -- Regards, Laurent Pinchart
