From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 222E1C432C0 for ; Fri, 22 Nov 2019 06:26:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EEC7320715 for ; Fri, 22 Nov 2019 06:26:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574403994; bh=fY0cUHA/BGwsaXhpKpud9uM8lZl5kyKXm4wqjazhbmM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PEobcpaRG3D5A/Ii2Gu5KR9Ml71TjFW0wbKizmdyyu9B8UW8xZHpBKHetOXEoCyiX 6xk7i7dG0gSlsEDgg/40eG9fAMbbznD6ALcCkKBinefBqpWpQq0CIjStLRidAEaZf6 CYgoLrzau0tQTfxGP4vfTN4QlKq/MpJJ2l7a09Nw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727880AbfKVFut (ORCPT ); Fri, 22 Nov 2019 00:50:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:55632 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727877AbfKVFus (ORCPT ); Fri, 22 Nov 2019 00:50:48 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 98BE120731; Fri, 22 Nov 2019 05:50:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574401848; bh=fY0cUHA/BGwsaXhpKpud9uM8lZl5kyKXm4wqjazhbmM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XE5AF4ncdQR7PbJdFmvcXrJAA6iYwTnPFCgosTfgV3o+FLv8IhEf1Bo2WDsgizhcR eqbc8t3GWuw6670kqtzNVIqa6B3lxFwwK/y2LAHGPawEJutM2q8vH8BdDZiW2O86e0 SbrqA9dAOdUurqj1l7RlzGU4aui8skK16w9AfjYw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Martin Schiller , John Crispin , Linus Walleij , Sasha Levin , linux-gpio@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 086/219] pinctrl: xway: fix gpio-hog related boot issues Date: Fri, 22 Nov 2019 00:46:58 -0500 Message-Id: <20191122054911.1750-79-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191122054911.1750-1-sashal@kernel.org> References: <20191122054911.1750-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Martin Schiller [ Upstream commit 9b4924da4711674e62d97d4f5360446cc78337af ] This patch is based on commit a86caa9ba5d7 ("pinctrl: msm: fix gpio-hog related boot issues"). It fixes the issue that the gpio ranges needs to be defined before gpiochip_add(). Therefore, we also have to swap the order of registering the pinctrl driver and registering the gpio chip. You also have to add the "gpio-ranges" property to the pinctrl device node to get it finally working. Signed-off-by: Martin Schiller Acked-by: John Crispin Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/pinctrl/pinctrl-xway.c | 39 +++++++++++++++++++++++----------- 1 file changed, 27 insertions(+), 12 deletions(-) diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c index 93f8bd04e7fe6..ae74b260b014b 100644 --- a/drivers/pinctrl/pinctrl-xway.c +++ b/drivers/pinctrl/pinctrl-xway.c @@ -1746,14 +1746,6 @@ static int pinmux_xway_probe(struct platform_device *pdev) } xway_pctrl_desc.pins = xway_info.pads; - /* register the gpio chip */ - xway_chip.parent = &pdev->dev; - ret = devm_gpiochip_add_data(&pdev->dev, &xway_chip, NULL); - if (ret) { - dev_err(&pdev->dev, "Failed to register gpio chip\n"); - return ret; - } - /* setup the data needed by pinctrl */ xway_pctrl_desc.name = dev_name(&pdev->dev); xway_pctrl_desc.npins = xway_chip.ngpio; @@ -1775,10 +1767,33 @@ static int pinmux_xway_probe(struct platform_device *pdev) return ret; } - /* finish with registering the gpio range in pinctrl */ - xway_gpio_range.npins = xway_chip.ngpio; - xway_gpio_range.base = xway_chip.base; - pinctrl_add_gpio_range(xway_info.pctrl, &xway_gpio_range); + /* register the gpio chip */ + xway_chip.parent = &pdev->dev; + xway_chip.owner = THIS_MODULE; + xway_chip.of_node = pdev->dev.of_node; + ret = devm_gpiochip_add_data(&pdev->dev, &xway_chip, NULL); + if (ret) { + dev_err(&pdev->dev, "Failed to register gpio chip\n"); + return ret; + } + + /* + * For DeviceTree-supported systems, the gpio core checks the + * pinctrl's device node for the "gpio-ranges" property. + * If it is present, it takes care of adding the pin ranges + * for the driver. In this case the driver can skip ahead. + * + * In order to remain compatible with older, existing DeviceTree + * files which don't set the "gpio-ranges" property or systems that + * utilize ACPI the driver has to call gpiochip_add_pin_range(). + */ + if (!of_property_read_bool(pdev->dev.of_node, "gpio-ranges")) { + /* finish with registering the gpio range in pinctrl */ + xway_gpio_range.npins = xway_chip.ngpio; + xway_gpio_range.base = xway_chip.base; + pinctrl_add_gpio_range(xway_info.pctrl, &xway_gpio_range); + } + dev_info(&pdev->dev, "Init done\n"); return 0; } -- 2.20.1