Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760068Ab3FDHZG (ORCPT ); Tue, 4 Jun 2013 03:25:06 -0400 Received: from mail-oa0-f43.google.com ([209.85.219.43]:47745 "EHLO mail-oa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759966Ab3FDHZD (ORCPT ); Tue, 4 Jun 2013 03:25:03 -0400 MIME-Version: 1.0 In-Reply-To: <20130531170437.GA17591@core.coreip.homeip.net> References: <1369995191-20855-1-git-send-email-gururaja.hebbar@ti.com> <20130531170437.GA17591@core.coreip.homeip.net> Date: Tue, 4 Jun 2013 09:25:02 +0200 Message-ID: Subject: Re: [PATCH 00/11] drivers: Add Pinctrl PM support From: Linus Walleij To: Dmitry Torokhov Cc: Hebbar Gururaja , Kevin Hilman , Grant Likely , Rob Herring , "davinci-linux-open-source@linux.davincidsp.com" , "devicetree-discuss@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" , Russell King - ARM Linux , "linux-kernel@vger.kernel.org" , Vaibhav Bedia , sudhakar.raj@ti.com Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1369 Lines: 37 On Fri, May 31, 2013 at 7:04 PM, Dmitry Torokhov wrote: > As with the original introduction of pinctrl states my question is: "Can > all of this be handled in the driver/bus core instead of adding a lot > of boilerplate code to the individual drivers". It can. Per the suggestion in 2/11: - Adding pins_sleep and pins_idle to struct dev_pin_info in include/linux/pinctrl/devinfo.h - Modify drivers/base/pinctrl.c to optionally look up sleep and idle states, you can make that code #ifdef CONFIG_PM I think. - Add something like static inline functions to include/linux/pinctrl/consumer.h with names like pinctrl_select_pm_idle(struct device *) pinctrl_select_pm_sleep(struct device *) to switch states using the device core containers, and includes checking IS_ERR() on the handles etc. I think this will save a *lot* of identical code in all the drivers, that will just have to call pinctrl_select_pm_sleep(), pinctrl_select_pm_default() pinctrl_select_pm_idle() instead of all the complex code. This is what I planned to do but never got around to. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/