On Thu, Jun 25, 2015 at 05:21:01PM +0800, Peter Hung wrote: > Hi Johan, > > Johan Hovold 於 2015/6/25 下午 04:06 寫道: > > - As Greg already mentioned, you need to implement gpio support using > > gpiolib, not a custom sysfs interface > > > > I don't have time to look closer at the architectural bits until next > > week I'm afraid, but perhaps you could start with the above. > > Thanks for your advices, I'll try to improve it again. > But I had something need to clarify. > > 1. The sysfs interface of the driver provide "limited output pin" > control. only support output 0/1, not support input mode. > Should I implement it as gpiolib?
Yes. > 2. If it still recommends to implement with gpiolib, Could I implement > it and preserve the sysfs interface for legacy? No, I'm afraid not. We don't want to have to maintain out-of-tree legacy interfaces. Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
