From patchwork Sun Jun 26 07:24:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff LaBundy X-Patchwork-Id: 585162 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 DC167C43334 for ; Sun, 26 Jun 2022 07:25:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232885AbiFZHZC (ORCPT ); Sun, 26 Jun 2022 03:25:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233516AbiFZHZB (ORCPT ); Sun, 26 Jun 2022 03:25:01 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2054.outbound.protection.outlook.com [40.107.223.54]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBF9210571; Sun, 26 Jun 2022 00:25:00 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ZlPj112D1DO4YNJbFuAlyGVe5EYj2FRSDjABMf/p/piT+TPdC4F4fFAYxXU25HtP6zUaAn5sOEA2UuSiEw3bD6mTnLeAU3pX+/JSDYqX7tzYlDmcJVhuQsh0A4dREaNa1OaMZQACUjsLg3Af11eNnBxqwlGHAb3HUfjExWNKqT17YY9SzaBhkWwXi8mawxmwgACD5DbJ1HJdDKJGnBnvDaUHbciwVssaS3eSe6sglbzlmTvEZZRVJpK4lTwxm1f7kTF0CK2qF3bm2/+FkpqnYJsQ6+BOSe/jy/LEW3O45V4pNqQ7X0v0Ebx9PqbM0dWukU+rGlr11qd2bfeQPLT3iw== 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=wgTI281MornsjlatUlOhokJU1pCJWeR8Yh3ZBWRdgNE=; b=ec6ryvfJO2zYm4WgsPT2DCi3zIinHsvTRmpbbWO+sIQrIwhdIpvlxXC30FapcOlQ8KxaMgGOvMtVRgT0rtWqpJ/TD0IInrwGtWG/JXLAbfLVcRysYm+bb5LCyNALP14cKyUhlNhYYK6e/BL691cONIyJYjCJ2yFWXTlBoJRUFJlJu+ASEOmAHMSTTyoc/YO25XVK7WSL+o1MJSALYZh8HpEMHB0CCv279mkhb48S2dPf3dXFx/SGakeYd3wVpAh19Yxjb2aYtglJXRDOXMe8AclyBRh1VidM6DuD8IqPRYUmoKUN1tA4oIOLLp7Bb3/+HatF8SZLGZpBg0Oo2ZZjuw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=labundy.com; dmarc=pass action=none header.from=labundy.com; dkim=pass header.d=labundy.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NETORG5796793.onmicrosoft.com; s=selector1-NETORG5796793-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=wgTI281MornsjlatUlOhokJU1pCJWeR8Yh3ZBWRdgNE=; b=GLwILCi6qFPKkCmb1UxQN+PC8rlltf3dDm60MNco3JLewry7nepX5Pzy8wcci5QqplUu4ZfzOR2Gj6m4q9KQPrruFK9DjjjSwxVtfG05b9QxHx4kr53d82yonaZ+cpAx7BfsgHbgw/mr4S8jKxvKx7KBSFSwjPuIsZ/DOWDCGCo= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=labundy.com; Received: from SN4PR0801MB3774.namprd08.prod.outlook.com (2603:10b6:803:43::21) by BN6PR08MB3395.namprd08.prod.outlook.com (2603:10b6:405:66::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5353.16; Sun, 26 Jun 2022 07:24:59 +0000 Received: from SN4PR0801MB3774.namprd08.prod.outlook.com ([fe80::2c67:a29a:4e8c:3ac0]) by SN4PR0801MB3774.namprd08.prod.outlook.com ([fe80::2c67:a29a:4e8c:3ac0%7]) with mapi id 15.20.5373.018; Sun, 26 Jun 2022 07:24:59 +0000 From: Jeff LaBundy To: dmitry.torokhov@gmail.com, robh+dt@kernel.org Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, Jeff LaBundy Subject: [PATCH v2 5/9] Input: iqs7222 - handle reset during ATI Date: Sun, 26 Jun 2022 02:24:08 -0500 Message-Id: <20220626072412.475211-6-jeff@labundy.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220626072412.475211-1-jeff@labundy.com> References: <20220626072412.475211-1-jeff@labundy.com> X-ClientProxiedBy: SN7PR04CA0064.namprd04.prod.outlook.com (2603:10b6:806:121::9) To SN4PR0801MB3774.namprd08.prod.outlook.com (2603:10b6:803:43::21) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4c857dc8-14ca-4af1-7d8b-08da5744fa3e X-MS-TrafficTypeDiagnostic: BN6PR08MB3395:EE_ 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:SN4PR0801MB3774.namprd08.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230016)(346002)(366004)(39830400003)(136003)(376002)(396003)(2906002)(107886003)(6506007)(8676002)(316002)(83380400001)(8936002)(86362001)(1076003)(36756003)(66946007)(186003)(6512007)(66556008)(38350700002)(2616005)(52116002)(26005)(38100700002)(41300700001)(478600001)(4326008)(66476007)(6666004)(6486002)(5660300002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: labundy.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4c857dc8-14ca-4af1-7d8b-08da5744fa3e X-MS-Exchange-CrossTenant-AuthSource: SN4PR0801MB3774.namprd08.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jun 2022 07:24:59.5232 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 00b69d09-acab-4585-aca7-8fb7c6323e6f X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: IQ9MIdX8t7XW+aRRngH32LY16+lz/3dYVG8XpNIH39DTK/4LTKe1umLUs8QlgZQw0IRPWZDa32F1doLPISMQ7A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR08MB3395 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org If the device suffers a spurious reset during ATI, there is no point in enduring any further retries. Instead, simply return successfully from the polling loop. In this case, the interrupt handler will intervene and recognize the device has been reset. It then proceeds to initialize the device and trigger ATI once more. As part of this change, swap the order of status field evaluation to match that of the interrupt handler, and correct a nearby off-by-one error that causes an error message to suggest the final attempt will be retried. Fixes: e505edaedcb9 ("Input: add support for Azoteq IQS7222A/B/C") Signed-off-by: Jeff LaBundy --- Changes in v2: - None drivers/input/misc/iqs7222.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/input/misc/iqs7222.c b/drivers/input/misc/iqs7222.c index aa46f2cd4d34..e65260d290cc 100644 --- a/drivers/input/misc/iqs7222.c +++ b/drivers/input/misc/iqs7222.c @@ -1314,12 +1314,15 @@ static int iqs7222_ati_trigger(struct iqs7222_private *iqs7222) if (error) return error; - if (sys_status & IQS7222_SYS_STATUS_ATI_ACTIVE) - continue; + if (sys_status & IQS7222_SYS_STATUS_RESET) + return 0; if (sys_status & IQS7222_SYS_STATUS_ATI_ERROR) break; + if (sys_status & IQS7222_SYS_STATUS_ATI_ACTIVE) + continue; + /* * Use stream-in-touch mode if either slider reports * absolute position. @@ -1336,7 +1339,7 @@ static int iqs7222_ati_trigger(struct iqs7222_private *iqs7222) dev_err(&client->dev, "ATI attempt %d of %d failed with status 0x%02X, %s\n", i + 1, IQS7222_NUM_RETRIES, (u8)sys_status, - i < IQS7222_NUM_RETRIES ? "retrying..." : "stopping"); + i + 1 < IQS7222_NUM_RETRIES ? "retrying" : "stopping"); } return -ETIMEDOUT;