From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH 4/6] pinctrl: single: Add support for wake-up interrupts Date: Fri, 11 Oct 2013 09:01:46 -0700 Message-ID: <20131011160146.GR29913@atomide.com> References: <20131003054221.8941.87801.stgit@localhost> <5256AA7F.8030005@ti.com> <20131010160018.GA29913@atomide.com> <20131010162015.GC29913@atomide.com> <5257BD3E.5000707@ti.com> <20131011154352.GO29913@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-omap-owner@vger.kernel.org To: Linus Walleij Cc: Roger Quadros , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , Grygorii Strashko , "linux-kernel@vger.kernel.org" , Peter Ujfalusi , Prakash Manjunathappa , Haojian Zhuang , =?utf-8?Q?Beno=C3=AEt?= Cousson , Linux-OMAP List-Id: devicetree@vger.kernel.org * Linus Walleij [131011 09:05]: > On Fri, Oct 11, 2013 at 5:43 PM, Tony Lindgren wrote: > > * Linus Walleij [131011 03:40]: > >> On Fri, Oct 11, 2013 at 10:56 AM, Roger Quadros wrote: > >> > >> > The register handling is fine. But how do we deal with resource handling? > >> > e.g. the block that has the deep-core registers might need to be clocked or powered > >> > before the registers can be accessed. > >> > >> Yeah I saw this in the code there. > >> > >> In this case it seems syscon-type regmap access can be used to > >> read/write the registers, so maybe the pin controller also need to > >> get a handle on some clock etc? > > > > Uhh, let's not go there.. The resource availability needs to be > > handled transparently in regmap code and the reg provider hardware > > module driver using runtime PM. > > OK we can surely discuss this with broonie, it makes sense to > have regmap be able to do its deed transparently. Yes I think so too. Sounds like we need callbacks for the runtime PM checks to the "register provider" driver. Hwo knows, maybe those features are there already :) Tony