Re: [RESEND PATCH v2] char: xillybus: Add driver for XillyUSB (Xillybus variant for USB)

On Mon, Feb 01, 2021 at 05:56:19PM +0200, eli.billauer@gmail.com wrote:

From: Eli Billauer <eli.billauer@gmail.com>

The XillyUSB driver is the USB variant for the Xillybus FPGA IP core.
Even though it presents a nearly identical API on the FPGA and host,
it's almost a complete rewrite of the driver: The framework for exchanging
data on a USB bus is fundamentally different from doing the same with a
PCIe interface, which leaves very little in common between the existing
driver and the new one for XillyUSB.

Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
---

Notes:
    Changelog:
    
    v2:
      - Add comment in Kconfig file, saying XILLYUSB really doesn't depend
        on XILLYBUS (following comment by Randy Dunlap)
    
      - Use SEEK_* predefined constants instead of numbers

As brought up on the other list, this should either:
	- use the same device nodes as the existing xillybus drivers do,
	  as you have the same api
	- just do it all in userspace using libusb.

thanks,

greg k-h