From mboxrd@z Thu Jan 1 00:00:00 1970 From: gregkh@linuxfoundation.org (Greg KH) Date: Thu, 25 Jul 2013 15:16:15 -0700 Subject: Location for a kind of GPIO bus driver In-Reply-To: References: <20130723151834.GJ9916@kw.sim.vm.gnt> Message-ID: <20130725221615.GA30881@kroah.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Jul 25, 2013 at 11:46:42PM +0200, Linus Walleij wrote: > On Tue, Jul 23, 2013 at 5:18 PM, Simon Guinot wrote: > > > (...) I am > > thinking about moving the GPIO extension bus support into a separate > > driver. The problem is that I can't find a proper location for a such > > driver. AFAIK, it doesn't fit with anything existing supported by Linux. > > Maybe I should consider drivers/bus ? Or even drivers/misc ? > > This is a question to Greg, the device core maintainer. > AFAICT they go into drivers/base/foo-bus.c No, specific bus code does not go in drivers/base/ it goes where the rest of the subsystem lives. > In this case I would first consider using MFD though, > please make a case for why this is not simply a multi > function device with a few cells (== platform devices). I agree with this as well. thanks, greg k-h