On Tue, Aug 19, 2014 at 02:45:47PM +0200, Cestonaro Thilo wrote: > On 19.08.2014 14:39, Greg KH wrote: > > On Tue, Aug 19, 2014 at 02:25:57PM +0200, Cestonaro Thilo wrote: > >>> You might want to step back and describe what you are wanting to do in > >>> the first place before wanting to add a new line discipline. > >>> > >>> > >> Ok. > >> Imagine you have two chips, one is the cpu and the other one is a device > >> which needs to be configured, accessed, talked to via uart. > >> The both chips are hardwired via uart. > >> Now I want to communicate from the kernel module with the device. > > Why within the kernel? Why not do the communication from userspace? > Cause it's a rtc, and I don't know of a way to have a /dev/rtc from > userspace > > > > >> let the device be a RTC Device which has a UART interface. > > How do you talk to this UART? Through a "normal" serial chip that the > > kernel already has a driver for, or through some other hardware control > > interface? > Jup, via normal serial chip. > > > > >> And I don't want to rewrite all the uart device stuff of the cpu uart > >> device. > > What do you mean by this? > As it is via a normal serial chip, one option would be to write a > sperate driver which includes all the register stuff from the original > serial chip module. > But this, I don't want to do. Try using the serio interface, it should do this all for you. greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
