From patchwork Tue Jun 30 07:45:21 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 6694391 X-Patchwork-Delegate: horms@verge.net.au 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 7A9489F3A0 for ; Tue, 30 Jun 2015 07:46:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9DAD920524 for ; Tue, 30 Jun 2015 07:46:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8009120520 for ; Tue, 30 Jun 2015 07:46:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752411AbbF3HqE (ORCPT ); Tue, 30 Jun 2015 03:46:04 -0400 Received: from andre.telenet-ops.be ([195.130.132.53]:48060 "EHLO andre.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752114AbbF3HqD (ORCPT ); Tue, 30 Jun 2015 03:46:03 -0400 Received: from ayla.of.borg ([84.193.93.87]) by andre.telenet-ops.be with bizsmtp id mXly1q00V1t5w8s01Xlyu8; Tue, 30 Jun 2015 09:46:01 +0200 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.82) (envelope-from ) id 1Z9qEw-00071g-4k; Tue, 30 Jun 2015 09:45:58 +0200 Received: from geert by ramsan with local (Exim 4.82) (envelope-from ) id 1Z9qEz-0000g0-Lb; Tue, 30 Jun 2015 09:46:01 +0200 From: Geert Uytterhoeven To: Linus Walleij , Alexandre Courbot , Laurent Pinchart , Simon Horman , Magnus Damm Cc: Maxime Ripard , Boris Brezillon , Benoit Parrot , linux-gpio@vger.kernel.org, linux-sh@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Geert Uytterhoeven Subject: [PATCH 1/7] ARM: shmobile: r8a73a4 dtsi: Add missing "gpio-ranges" to gpio node Date: Tue, 30 Jun 2015 09:45:21 +0200 Message-Id: <1435650327-2542-2-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1435650327-2542-1-git-send-email-geert+renesas@glider.be> References: <1435650327-2542-1-git-send-email-geert+renesas@glider.be> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 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 led1-high (chip r8a73a4_pfc, offset 28) 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 ranges are 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 --- arch/arm/boot/dts/r8a73a4.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/boot/dts/r8a73a4.dtsi b/arch/arm/boot/dts/r8a73a4.dtsi index 5090d1a8f652e8be..cb4f7b2798fe23be 100644 --- a/arch/arm/boot/dts/r8a73a4.dtsi +++ b/arch/arm/boot/dts/r8a73a4.dtsi @@ -207,6 +207,13 @@ reg = <0 0xe6050000 0 0x9000>; gpio-controller; #gpio-cells = <2>; + gpio-ranges = + <&pfc 0 0 31>, <&pfc 32 32 9>, + <&pfc 64 64 22>, <&pfc 96 96 31>, + <&pfc 128 128 7>, <&pfc 160 160 19>, + <&pfc 192 192 31>, <&pfc 224 224 27>, + <&pfc 256 256 28>, <&pfc 288 288 21>, + <&pfc 320 320 10>; interrupts-extended = <&irqc0 0 0>, <&irqc0 1 0>, <&irqc0 2 0>, <&irqc0 3 0>, <&irqc0 4 0>, <&irqc0 5 0>, <&irqc0 6 0>, <&irqc0 7 0>,