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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52834C433FE for ; Mon, 6 Dec 2021 23:32:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377355AbhLFXfi (ORCPT ); Mon, 6 Dec 2021 18:35:38 -0500 Received: from mail-eopbgr60120.outbound.protection.outlook.com ([40.107.6.120]:46864 "EHLO EUR04-DB3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S243940AbhLFXfh (ORCPT ); Mon, 6 Dec 2021 18:35:37 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=aFnKmOTIsAnxEZHDh4M1KRT0Hum963JyUO0WiAt/ct/yZfAfsclDcRA9HN1IF4YVQZm28p6Tyer7BZbcaY4JkOsre9aHNBD09ak+0+PAz3zSOKdHwAuXy01FOiMDhVvN07IwarGBh2oB/QkAM1Uo63zGV90PZIrCAmNia3zmgaIeowQDh+pKBJztySzonRtk11FRLFYOtTDXsFonsIkKPb92talPvhGLhGe3iW6xEeH86VlR/9iH+P3JnD7Vf54xTAj/GoRkmLA8pcZFXuhs8oru0cG7trepOEt7+AEY8LJibiJBF/9luz8tfyXCGu+7ItwaVTKyxetlyrAItxtssA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=6doiZQHFai/phyfyJ2/J9eao/4SzhJ8lReE04/Eke/0=; b=TCLJRKKu2CeIhwH2TVMVeI+4jvUO4nxiHcr5MI1NFLyFV1p7bdBU8yTHrnuVJndCu+eyRD4iZcMsvsZhA1YUHFQghyy/K85EcHwDWLKQFcZlJsLHAEgcEcLLHB1SJ4r53PTPOO/TfzJYTm6Z0UicpVaH0YqBjw2L3fok9vDSHcrPR7VXoi2b10oNNPxEC45SFArUGlkPCO/dMrjUKg3z5rw96LIobYFq3WfkBw3978O2uXO7kPhEoHvAZsdPJl9CTMQCCsQBi0Evbzxy4P6CEihOXnb44YyUEGGG7jFTK058+Kpv61Dg9jAz6xdZ1JjUHeSSX6jYPz5nmkh37+FVlQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=axentia.se; dmarc=pass action=none header.from=axentia.se; dkim=pass header.d=axentia.se; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axentia.se; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=6doiZQHFai/phyfyJ2/J9eao/4SzhJ8lReE04/Eke/0=; b=giOOwhBegVPAPySLSaEOzwEXo56MGIqn7v9DGLc0J8kQAG6+91ifQT78FndkazXPJFfbHOeqB7f0JAlLez4YOwltpV0YoqaT5GJXcjGlSvA4RAsYn7YpZzxuGuKM9U3oOMjZ03d+O9s7DumUn1p4gKAucEqigEtKQ//RWVc7CDc= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=axentia.se; Received: from DB8PR02MB5482.eurprd02.prod.outlook.com (2603:10a6:10:eb::29) by DB7PR02MB4105.eurprd02.prod.outlook.com (2603:10a6:10:41::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.11; Mon, 6 Dec 2021 23:32:06 +0000 Received: from DB8PR02MB5482.eurprd02.prod.outlook.com ([fe80::7519:c72c:98b1:a39]) by DB8PR02MB5482.eurprd02.prod.outlook.com ([fe80::7519:c72c:98b1:a39%4]) with mapi id 15.20.4755.022; Mon, 6 Dec 2021 23:32:06 +0000 Message-ID: <4d17866a-d9a4-a3d7-189a-781d18dbea00@axentia.se> Date: Tue, 7 Dec 2021 00:32:03 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.2 Content-Language: en-US To: "linux-kernel@vger.kernel.org" Cc: Ludovic Desroches , Linus Walleij , Nicolas Ferre , Alexandre Belloni , "linux-arm-kernel@lists.infradead.org" , "linux-gpio@vger.kernel.org" From: Peter Rosin Subject: [PATCH] pinctrl: at91: allow use of of gpio-line-names property Organization: Axentia Technologies AB Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: GV3P280CA0071.SWEP280.PROD.OUTLOOK.COM (2603:10a6:150:a::6) To DB8PR02MB5482.eurprd02.prod.outlook.com (2603:10a6:10:eb::29) MIME-Version: 1.0 Received: from [192.168.13.3] (185.178.140.238) by GV3P280CA0071.SWEP280.PROD.OUTLOOK.COM (2603:10a6:150:a::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.11 via Frontend Transport; Mon, 6 Dec 2021 23:32:05 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: a303c2b7-ef59-4298-db0c-08d9b9109d7c X-MS-TrafficTypeDiagnostic: DB7PR02MB4105:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DB8PR02MB5482.eurprd02.prod.outlook.com;PTR:;CAT:NONE;SFS:(346002)(136003)(366004)(396003)(39830400003)(376002)(5660300002)(83380400001)(54906003)(86362001)(4326008)(6916009)(16576012)(36916002)(31686004)(26005)(316002)(2906002)(508600001)(66946007)(956004)(8676002)(31696002)(8936002)(36756003)(6486002)(2616005)(38100700002)(66556008)(66476007)(186003)(45980500001)(43740500002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?T1d0TW5SQ1BBbU12UTV5dk5CaENxaXZxK0xDRDRIbUd1enU2MlJnbVhCMTdR?= =?utf-8?B?aUtpSmh2MVRlWldhMGZTS1IrOFhzMVhpRWRqYWdZd0t5RXMvNlJmZFVNSVd5?= =?utf-8?B?b1c5VjlsNmFSL3hIenBxbmc2RlRlTjhabUhsb2JxTXprYU9CUTEreDZEck5U?= =?utf-8?B?VjlWWXk0b2grZDJYNVhIaEVXWTh2WEMwcFpHbE1mNmJsRkJoc1B6QnBtUFRa?= =?utf-8?B?Y0Y2ejBEUGk3TGxCc0MwUnQ2N254Q3BuelZMU216a3RQWVpPSUZlZHpxcXZU?= =?utf-8?B?RzEzVlVyaU1ldG4zb0dSNTJHR3dvSDMydUV1dlRzVWVMdzRmUXVSYnRZMllj?= =?utf-8?B?eEtMY3p5KzNlZjg0Qlp6b2FxcHJ0Z2k5bU5Tek1NOC9wZ3VZUVp1amRtSTZC?= =?utf-8?B?L3pjcUlZZ3FWUkc0V2s3RVd3UzVGbWt6QThLQUFuMG1Ka1BaclhFNi9PWW50?= =?utf-8?B?c3N0V0IxUGppMCtpUlRkUVRDTDJBVDZlV3NRNjVGUVQ4UkFQbFBhekJYMzBP?= =?utf-8?B?OUFHMExQTHhzdVRmMmtVSi9vVTV1QlN6dkY0eTZHcnN1YXZPVkkwMjRNSUU0?= =?utf-8?B?amJXZUN5ZHl3azVqR1lhSEJybFNyYUlaM29kYUloQ3RpZnh3eFJ0TXo1cGor?= =?utf-8?B?RElqY3A3bEIyVHFTVGxVZXh1QVdDaXhJV3VObUZIWkNFL2NMSUg0dDNMNDhH?= =?utf-8?B?dG4xdkZoQzdkTjJLNThva3N3KzhteDEveWtnVjFDakY3bHMzNWZDUm9HTThE?= =?utf-8?B?OVo3dFZwVTlrK2RaWExUdjErNS9xd251eklZZE5CNm5kS3VzYlN5N0FtUnZ3?= =?utf-8?B?V3NlU3BKOXFncXJHWDh5ZnMyM1ZTQ0dSRXRTcHh0blRtNlRYd2NIdFFlVGpW?= =?utf-8?B?TEtETGdzUUVWR0RxTnNQaVRPeHRLMEgwR0NXdEFCeTIwSHFHZ0ZFS0dHYTdV?= =?utf-8?B?QVVyRlgvRldmRXlBTkZtRVBEeDZYcVJmL2VDZzFVRnZMSW1EeEJvbFBjMGhy?= =?utf-8?B?UlFvR2lDWHd2cVJlWWYvM3JMZi8yNkRoamdlUldOdG42Vk45NitwQmVxQXlx?= =?utf-8?B?R2EyN3ZpWlRudTlrVXZRWmFwUG4zU2UyYkxzL1o5M2xBNlZqODN1R3E3bHBE?= =?utf-8?B?cVBDL2wrOURSTHhseE5NcjRzK0F3aGtlUkdFRWMrZlROdUlYQmFIUzg4WjdY?= =?utf-8?B?Uy92eE5Gc2lVcm5TZndwaFVDWU0yUGsxMWwxTFZodk85M3dxU2tqQXVHbVdz?= =?utf-8?B?VFZVTHJQcENaNVRZdnczM3FqTThzdmVWSlNwRWpjK3BLM0wvSnVKQ2dIanFQ?= =?utf-8?B?d1pkQ3o3QzluaFBoZHZ2bkFuL0gvd2FwRkU1ZDZEblExNGNXQ1RuUmFObEMv?= =?utf-8?B?cXNOWVF0N0s1aG9hMWlqWHM4NG5JNE1HQTI2ZG9scEhCTk5qYk5YOWdVZUdV?= =?utf-8?B?TkRVWmd0RkhzRW9aWXpzU2VYWTN3eWc1RmZleWVyQTZ3SFJJbjQ0bHlUSVJw?= =?utf-8?B?V21pNGFBd2RKYUNlbnNjNWlILzJCZ0x3REo1aDdEQzk3a0V1RG90cmJWSmp0?= =?utf-8?B?czZqNXB6aEVIWG9mMHB3Nk5OWjh6VWFVQ1g0bXN2N3dUVW11ZDVPQVEzRFU2?= =?utf-8?B?c3l4VGZLeWNyc25OQ3VFQmVTNjhUbUtVWlovT1M3Ump5RGw4dzYwZFd3Zm5H?= =?utf-8?B?SlhGcDIwUUhuNUZSYmRwSEQvYWRhT1M5YTdYTkRqdy9hVTNGalpwWkZFWHlr?= =?utf-8?B?SjdkVUpkMWNqeGF3UzlKdk5jMzlCMkZ0OEliU0xmUGp0NW1iN1dsbGoydXBG?= =?utf-8?B?aWpMTjRiSVNHZEtKdHJzWUMyZkNYZEtoVHR6QUpmbnNmMWFjaU4wdnlqdlZ3?= =?utf-8?B?Y2M0anpHb3RPdnpFbkErQjBKeFhCRmpJWHlNRUh5WlJzaU5xWCtNSTVXaEVt?= =?utf-8?B?K3lSR1VFVUxBbVc5Rk5mM3c0SDEvYURzQlNSbW9pTlFqUGppckxhdGtYTmkw?= =?utf-8?B?b0FJMzQyZW0rOGJiZnJ5dm1uWk1VNnlXbWVjeWJndXRUZVFKdmNRZFVYZWFR?= =?utf-8?B?VTNxdy9SZmhsN3I1OHN6cC8wTlJNUnhNaFl2Sk1OU0VIZXBEVFp4bFZwWVN4?= =?utf-8?Q?MqyU=3D?= X-OriginatorOrg: axentia.se X-MS-Exchange-CrossTenant-Network-Message-Id: a303c2b7-ef59-4298-db0c-08d9b9109d7c X-MS-Exchange-CrossTenant-AuthSource: DB8PR02MB5482.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Dec 2021 23:32:06.4195 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4ee68585-03e1-4785-942a-df9c1871a234 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: kfZpJQfiJyFrgyaXOk9EAv9EaTxzFrmTtYVvwAliZjNDE4XUmJUvdhBLwPnHh1ZS X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR02MB4105 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If no line name is given (by not having a gpio-line-names property, or by having empty "" strings for some lines), fall back to the existing pioC12-style line name scheme. It is useful to be able to explicitly name lines from the schematics or its function, rather than having the MCU names forced upon every user. Signed-off-by: Peter Rosin --- drivers/pinctrl/pinctrl-at91.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) I don't know if it's sane to fall back to the pioC12-style on empty strings, or if someone adding a gpio-line-names property should be responsible for filling in those names "by hand". I generally don't care what "unused" pins are named, so either is fine by me... Cheers, Peter diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index 6022496bb6a9..4f108d07e6ad 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -1821,7 +1821,7 @@ static int at91_gpio_probe(struct platform_device *pdev) int irq, i; int alias_idx = of_alias_get_id(np, "gpio"); uint32_t ngpio; - char **names; + const char **names; BUG_ON(alias_idx >= ARRAY_SIZE(gpio_chips)); if (gpio_chips[alias_idx]) { @@ -1890,8 +1890,15 @@ static int at91_gpio_probe(struct platform_device *pdev) goto clk_enable_err; } - for (i = 0; i < chip->ngpio; i++) - names[i] = kasprintf(GFP_KERNEL, "pio%c%d", alias_idx + 'A', i); + if (of_property_read_string_array(np, "gpio-line-names", + names, chip->ngpio) != chip->ngpio) + memset(names, 0, chip->ngpio * sizeof(char *)); + + for (i = 0; i < chip->ngpio; i++) { + if (!names[i] || !names[i][0]) + names[i] = kasprintf(GFP_KERNEL, + "pio%c%d", alias_idx + 'A', i); + } chip->names = (const char *const *)names; -- 2.20.1