Re: [PATCH v2 2/3] Added Xilinx XDMA IP core driver

[Martin Tůma]

On 21. 09. 22 17:15, Lizhi Hou wrote:
> On 9/21/22 02:25, Martin Tůma wrote:
> > > Currently, the V3 patch series does not support register user logic
> > > interrupt yet.
> >
> > This is a showstopper for almost every XDMA based PCIe card. As the 
> > driver "consumes" the whole register space (including the user IRQs 
> > enable/disable registers), there is AFAIK no way how to enable the 
> > user IRQs when this driver is loaded.
> >
> > > Could you convert your driver to use this?
> >
> > Not without the user IRQs.
>
> I provided the patch link for user logic IRQ support in previous reply. 
> You may pull it and patch it on top of the V3 patch series.
>
>
> Lizhi
>
> > M.

I'm sorry, I have missed that. With that modification it should be 
(theoretically - haven't tested it yet) possible to use our v4l2 driver 
with this XDMA driver instead of the one I have provided in my patches.

I will now try to rewrite our driver and test it with your XDMA driver 
to be sure it works. It will however definitely need a "V4" of your XDMA 
driver with that patch on github before it can be included into the 
kernel and be usable for all XDMA-based PCIe cards.

M.