From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH 0/4] gpio: introduce descriptor-based interface Date: Thu, 17 Jan 2013 19:22:13 +0000 Message-ID: <201301171922.13432.arnd@arndb.de> References: <1357629535-26033-1-git-send-email-acourbot@nvidia.com> <50F7E83E.8000105@uclinux.org> <201301170850.43655.sfking@fdwdc.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from moutng.kundenserver.de ([212.227.17.9]:63981 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752791Ab3AQTWj (ORCPT ); Thu, 17 Jan 2013 14:22:39 -0500 In-Reply-To: <201301170850.43655.sfking@fdwdc.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Steven King Cc: Greg Ungerer , Linus Walleij , Geert Uytterhoeven , Alex Courbot , Grant Likely , Guenter Roeck , Linux Kernel Mailing List , linux-arch , "linux-arm-kernel@lists.infradead.org" , "devicetree-discuss@lists.ozlabs.org" On Thursday 17 January 2013, Steven King wrote: > I haven't been keeping up with the kernel list of late, can someone point me > to what''s being discussed so I can see what were talking about here? We are discussion about changes to the GPIO API, in particular about adding a descriptor (i.e. pointer to struct) based interface to replace integers as the primary key. Any kind of change on this level is currently problematic because it is basically impossible to tell which files are implementing the current interface and would need to get changed along with changing gpiolib. If everything goes through gpiolib, it's much easier to make compatible extensions in one place. Do you have any numbers about how much of a difference for your platforms we are talking about at most? Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Thu, 17 Jan 2013 19:22:13 +0000 Subject: [PATCH 0/4] gpio: introduce descriptor-based interface In-Reply-To: <201301170850.43655.sfking@fdwdc.com> References: <1357629535-26033-1-git-send-email-acourbot@nvidia.com> <50F7E83E.8000105@uclinux.org> <201301170850.43655.sfking@fdwdc.com> Message-ID: <201301171922.13432.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thursday 17 January 2013, Steven King wrote: > I haven't been keeping up with the kernel list of late, can someone point me > to what''s being discussed so I can see what were talking about here? We are discussion about changes to the GPIO API, in particular about adding a descriptor (i.e. pointer to struct) based interface to replace integers as the primary key. Any kind of change on this level is currently problematic because it is basically impossible to tell which files are implementing the current interface and would need to get changed along with changing gpiolib. If everything goes through gpiolib, it's much easier to make compatible extensions in one place. Do you have any numbers about how much of a difference for your platforms we are talking about at most? Arnd