From patchwork Tue Jun 30 07:45:23 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 489535 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 7C8CF1402C0 for ; Tue, 30 Jun 2015 17:46:10 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751737AbbF3HqJ (ORCPT ); Tue, 30 Jun 2015 03:46:09 -0400 Received: from xavier.telenet-ops.be ([195.130.132.52]:45393 "EHLO xavier.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750803AbbF3HqD (ORCPT ); Tue, 30 Jun 2015 03:46:03 -0400 Received: from ayla.of.borg ([84.193.93.87]) by xavier.telenet-ops.be with bizsmtp id mXly1q00F1t5w8s01Xlybq; Tue, 30 Jun 2015 09:46:02 +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-00071i-6A; Tue, 30 Jun 2015 09:45:58 +0200 Received: from geert by ramsan with local (Exim 4.82) (envelope-from ) id 1Z9qEz-0000gA-NE; 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 3/7] ARM: shmobile: sh73a0 dtsi: Add missing "gpio-ranges" to gpio node Date: Tue, 30 Jun 2015 09:45:23 +0200 Message-Id: <1435650327-2542-4-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-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org 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 sh73a0_pfc, offset 20) 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 --- arch/arm/boot/dts/sh73a0.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi index 11e17c5f26e2cae2..ff7c8f298f30a58d 100644 --- a/arch/arm/boot/dts/sh73a0.dtsi +++ b/arch/arm/boot/dts/sh73a0.dtsi @@ -392,6 +392,9 @@ <0xe605801c 0x1c>; gpio-controller; #gpio-cells = <2>; + gpio-ranges = + <&pfc 0 0 119>, <&pfc 128 128 37>, <&pfc 192 192 91>, + <&pfc 288 288 22>; 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>,