From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Williams Subject: UIO / of_genirq driver Date: Thu, 28 Jan 2010 17:13:00 +1000 Message-ID: <1d3f23371001272313i62fc9158se4cd9173f196fb12@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org To: Linux Kernel list Cc: gregkh-l3A5Bk7waGM@public.gmane.org, devicetree-discuss , hjk-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org, magnus.damm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org List-Id: devicetree@vger.kernel.org Hi, I came across this thread/patchset from around June last year: http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-June/073086.html where Wolfgang proposed a generic OF-driven UIO driver. The discussion seemed to stall after Grant Likely indicated he didn't like the use of a linux-specific compatible binding in the device tree (compatible="generic-uio"). I guess I have a couple of questions: * did this patchset go anywhere? I've been using it here the last few days and it works great. and more generally: * Is there a better way to handle the OF bindings for this sort of thing? Grant's complaint seems to come up often - when you have generic controllers in a system (SPI/I2C also spring to mind), we need a way of signalling somehow to the kernel that each instance has a particular usage intended. However, the device-tree guys complain whenever anyone tries to encode anything non-hardware related into the DTS itself. I guess I'd like to just open up a discussion, see if there's been any progress towards a general solution. Thanks, John -- John Williams PetaLogix - Linux Solutions for a Reconfigurable World w: www.petalogix.com p: +61-7-30090663 f: +61-7-30090663