On Tue, May 27, 2014 at 09:46:16AM +0200, Benjamin Henrion wrote: > On Tue, May 27, 2014 at 9:35 AM, Johan Hovold <jhovold@xxxxxxxxx> wrote: > > [ +CC: linux-usb ] > > > > On Thu, May 15, 2014 at 01:31:04PM +0200, Benjamin Henrion wrote: > >> Hi, > >> > >> I am using this patch for supporting cp2104 GPIOs: > >> > >> https://github.com/ondrej1024/crelay/blob/master/cp210x/kernel-3.10.y/cp210x.c.patch > >> > >> Any idea if you plan to integrate GPIO support in cp210x.c? > > > > Not with the interface of the patch you refer to (driver-specific ioctl) > > at least. > > > > We have a generic gpio interface in the kernel which would have to be > > used. > > > > A quick glance at the datasheet also reveals that the gpio pins are > > only one-time configurable (default to inputs) when flashing the device > > ROM. So I doubt it'd be worthwhile to try to implement generic support > > That's a severe limitation. Do you know if it is the same case for > FT232R or the new PL2303HX revD? I have no idea, sorry. But either way, no USB serial driver currently implements GPIO support AFAIK. Johan -- 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
