On Tue, 2008-07-22 at 09:48 +0200, super.firetwister@xxxxxxxxxxxxxx wrote: > On Tuesday 22 July 2008, Ben Nizette wrote: > > > As an aside, you sure you want to do this anyway? > > No ;) > > > > I'd suggest that you > > just do a gpio chip driver for this, tie it in to gpiolib and use the > > gpiolib user interface (which IIRC has only made it as far as -mm but is > > on the way up). This gives kernel internals nice access to the pins as > > well through the standard gpio framework. > > This was just an example to make it others easier to reproduce my problem. My > goal is to have a soft spi driver in userspace, which would probably be > slower if it uses gpiolib. This driver is integrated in the application I > want to port to Linux. Ah right, cool. I donno what the speed would be like, but both David Brownell and Michael Buesch both have spi-over-gpio patches floating around (eg [1]). That, plus the spidev interface, might at least be worth a try..? But I'll let you get back to solving the UIO problem at hand :-D --Ben. [1] http://lwn.net/Articles/290066/ -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html