Petr, We will be happy to test, code review, and otherwise contribute to your effort. We're using the cp2105 dual-uart device in our product. It has two logical serial ports and two sets of GPIOs so I think its a good test case. best, John. On Fri, 2015-07-24 at 13:08 +0200, Petr Tesařík wrote: > On Thu, 23 Jul 2015 14:59:32 -0700 > "John D. Blair" <johnb-VAraepgqNCc/CDIEhCN/twC/G2K4zDHf@xxxxxxxxxxxxxxxx> wrote: > > > On Thu, 2015-07-23 at 18:00 +0200, Johan Hovold wrote: > > > The short answer is that we do not want custom driver ioctls. Any gpio > > > implementation needs to based on gpiolib, which provides a > > > standardised > > > interface. > > > > > I understand. > > > > We will evaluate and decide if the work is worth it for us to do. > > FWIW I'm planning to do this work. I've just started cleaning up the > cp210x sources, but my goal is to get gpio support (and not using > IOCTLs). > > One of the challenges is that the CP210x device is in fact two logical > devices (the serial port and the GPIO), so theoretically, there should > be two drivers and a common module to handle resource conflicts, but I > believe this would be overkill. > > I'll see how it goes with the upstream maintainers. ;-) > > Petr T -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
