Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752761AbaKDKSM (ORCPT ); Tue, 4 Nov 2014 05:18:12 -0500 Received: from mail-ie0-f175.google.com ([209.85.223.175]:40388 "EHLO mail-ie0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752341AbaKDKSI (ORCPT ); Tue, 4 Nov 2014 05:18:08 -0500 MIME-Version: 1.0 In-Reply-To: <1415012493-134561-2-git-send-email-mika.westerberg@linux.intel.com> References: <1415012493-134561-1-git-send-email-mika.westerberg@linux.intel.com> <1415012493-134561-2-git-send-email-mika.westerberg@linux.intel.com> Date: Tue, 4 Nov 2014 11:18:07 +0100 Message-ID: Subject: Re: [PATCH v2 1/2] gpio / ACPI: Add knowledge about pin controllers to acpi_get_gpiod() From: Linus Walleij To: Mika Westerberg Cc: Alexandre Courbot , Heikki Krogerus , Mathias Nyman , "Rafael J. Wysocki" , Ning Li , Alan Cox , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 3, 2014 at 12:01 PM, Mika Westerberg wrote: > The GPIO resources (GpioIo/GpioInt) used in ACPI contain a GPIO number > which is relative to the hardware GPIO controller. Typically this number > can be translated directly to Linux GPIO number because the mapping is > pretty much 1:1. > > However, when the GPIO driver is using pins exported by a pin controller > driver via set of GPIO ranges, the mapping might not be 1:1 anymore and > direct translation does not work. > > In such cases we need to translate the ACPI GPIO number to be suitable for > the GPIO controller driver in question by checking all the pin controller > GPIO ranges under the given device and using those to get the proper GPIO > number. > > Signed-off-by: Mika Westerberg > Acked-by: Rafael J. Wysocki Sweet, patch applied. 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/