From patchwork Fri Aug 7 02:11:33 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 6964221 Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 021009F373 for ; Fri, 7 Aug 2015 02:12:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 280DD206A2 for ; Fri, 7 Aug 2015 02:12:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37A6E2064B for ; Fri, 7 Aug 2015 02:12:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754766AbbHGCMN (ORCPT ); Thu, 6 Aug 2015 22:12:13 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:48620 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755380AbbHGCMN (ORCPT ); Thu, 6 Aug 2015 22:12:13 -0400 Received: from reginn.isobedori.kobe.vergenet.net (p1112-ipbfp1902kobeminato.hyogo.ocn.ne.jp [114.172.120.112]) by kirsty.vergenet.net (Postfix) with ESMTPA id 6A50425B811; Fri, 7 Aug 2015 12:12:02 +1000 (AEST) Received: by reginn.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id 481969413EF; Fri, 7 Aug 2015 11:11:57 +0900 (JST) From: Simon Horman To: linux-sh@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Magnus Damm , Geert Uytterhoeven , Simon Horman Subject: [PATCH 09/10] ARM: shmobile: r8a7740 dtsi: Add missing "gpio-ranges" to gpio node Date: Fri, 7 Aug 2015 11:11:33 +0900 Message-Id: <09d1c7b4babd3ef9bfc0a148931e5e5702db5e1b.1438911334.git.horms+renesas@verge.net.au> X-Mailer: git-send-email 2.1.4 In-Reply-To: References: Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-7.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Geert Uytterhoeven If a GPIO driver uses gpiochip_add_pin_range() (which is usually the case for GPIO/PFC combos), the GPIO hogging mechanism configured from DT doesn't work: requesting hog GPIO lcd0 (chip r8a7740_pfc, offset 176) failed The actual error code is -517 == -EPROBE_DEFER. The problem is that PFC+GPIO registration is handled in multiple steps: 1. pinctrl_register(), 2. gpiochip_add(), 3. gpiochip_add_pin_range(). Configuration of the hogs is handled in gpiochip_add(): gpiochip_add of_gpiochip_add of_gpiochip_scan_hogs gpiod_hog gpiochip_request_own_desc __gpiod_request chip->request pinctrl_request_gpio pinctrl_get_device_gpio_range However, at this point the GPIO controller hasn't been added to pinctrldev_list yet, so the range can't be found, and the operation fails with -EPROBE_DEFER. To fix this, add a "gpio-ranges" property to the gpio device node, so the range is added by of_gpiochip_add_pin_range(), which is called by of_gpiochip_add() before the call to of_gpiochip_scan_hogs(). Signed-off-by: Geert Uytterhoeven Acked-by: Laurent Pinchart Acked-by: Linus Walleij Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7740.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi index d84714468cce..e14cb1438216 100644 --- a/arch/arm/boot/dts/r8a7740.dtsi +++ b/arch/arm/boot/dts/r8a7740.dtsi @@ -291,6 +291,7 @@ <0xe605800c 0x20>; gpio-controller; #gpio-cells = <2>; + gpio-ranges = <&pfc 0 0 212>; interrupts-extended = <&irqpin0 0 0>, <&irqpin0 1 0>, <&irqpin0 2 0>, <&irqpin0 3 0>, <&irqpin0 4 0>, <&irqpin0 5 0>, <&irqpin0 6 0>, <&irqpin0 7 0>,