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 523CAC43334 for ; Tue, 19 Jul 2022 14:33:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239066AbiGSOdb (ORCPT ); Tue, 19 Jul 2022 10:33:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238326AbiGSOdS (ORCPT ); Tue, 19 Jul 2022 10:33:18 -0400 Received: from NAM12-MW2-obe.outbound.protection.outlook.com (mail-mw2nam12on2048.outbound.protection.outlook.com [40.107.244.48]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C52B9B7CE; Tue, 19 Jul 2022 07:22:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=gwBg6ccoKw9V6Qd/lPWMB3MqTLTJcC5h6db/2NOIR9zUpidvGakL7j7h+0ap4V60Z3iW7EnpT6elf6rQF+pNl1oljpJlLXkdVxlLqCnWjxfAum3XtG7UKGx3V8803GJEPEqOFUns8EvbcAKfMJHUdZ/SRl2TQu6EnnrkVUeJZqicSfFkNWf3r77UilrygjpsI1QTaHwqufSNZVL4ufdUMEgyBenRyzmGtRQwGpfiXkJ4ZePft9EopqUjxEIW3f+9Ln+NZcqaevkDhC1sQrPHFZ/bfTDqnt43dfpiKyrsZ/9Cu57+bRn9ZaigBJe2B9/LjRJJxd2gUF1FpK0ughduyw== 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=S4K9+rIbVDmMZntnKFxOTb7CqsQkvUoEzUcTSEzSCFI=; b=moaUt8JRQtQyi/sKAlZWy3R77mjqUY84j+/cxezhnPk/dDaA19BZ3sTbyD39srnAnI+i4TjesGEQpAwS/rRlG/oquR0tJdlUivPHkVbndqpGsuP/TNH/8DtvG2tDdm2ABBwoVNBiAXYiReTWhXLJBnHImKWYnS2J27GyAK8WuHpxrwbqBQRrPxHt/QbwQN0iNTez3hWdxVKsVfT+HM0UMaepNlDJ7JIFaXvb86mK0fsF9BehkYjQhR4BBj0pd+zTtGKtaNrY86uE6SH3b8OGzrqt2qSIXZVrRMbJYojR59UuDdD9Lyi+VG7xqMEPVbj9wwQAmXdDBG/raOkiu+vIxQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=linux.intel.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=S4K9+rIbVDmMZntnKFxOTb7CqsQkvUoEzUcTSEzSCFI=; b=RnECFjarpBZzcQp9GPy9TMBzCKTRZ5OqXxrPhG7uBKap09UvWc191qdj3LO6cUNB5R+IoZ+dDWxgkXZaZgB84ovb+poewFzZozwuffZk24DFH5ZihfnBjMYGzlK/jbGsg0bqg3MKPTgVrmq6dt5v5r9FhiNJaSzqq0Vy3ZS2H/Y= Received: from BN9PR03CA0945.namprd03.prod.outlook.com (2603:10b6:408:108::20) by CH0PR12MB5346.namprd12.prod.outlook.com (2603:10b6:610:d5::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5438.12; Tue, 19 Jul 2022 14:22:17 +0000 Received: from BN8NAM11FT038.eop-nam11.prod.protection.outlook.com (2603:10b6:408:108:cafe::3d) by BN9PR03CA0945.outlook.office365.com (2603:10b6:408:108::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5438.21 via Frontend Transport; Tue, 19 Jul 2022 14:22:17 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT038.mail.protection.outlook.com (10.13.176.246) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5438.12 via Frontend Transport; Tue, 19 Jul 2022 14:22:17 +0000 Received: from AUS-LX-MLIMONCI.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Tue, 19 Jul 2022 09:22:16 -0500 From: Mario Limonciello To: , Mika Westerberg , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski CC: Pavel Krc , , , Subject: [PATCH 1/2] gpiolib: acpi: Add support to ignore programming an interrupt Date: Tue, 19 Jul 2022 09:21:41 -0500 Message-ID: <20220719142142.247-1-mario.limonciello@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: cc01b06f-6712-4ee8-a9fc-08da6992158e X-MS-TrafficTypeDiagnostic: CH0PR12MB5346: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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230016)(4636009)(396003)(39860400002)(136003)(376002)(346002)(46966006)(40470700004)(36840700001)(54906003)(110136005)(2616005)(86362001)(356005)(82740400003)(83380400001)(40460700003)(70586007)(4326008)(2906002)(8676002)(81166007)(70206006)(426003)(16526019)(1076003)(47076005)(336012)(186003)(44832011)(36756003)(7696005)(8936002)(5660300002)(41300700001)(36860700001)(40480700001)(6666004)(82310400005)(26005)(316002)(478600001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jul 2022 14:22:17.3534 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cc01b06f-6712-4ee8-a9fc-08da6992158e X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT038.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5346 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org gpiolib-acpi already had support for ignoring a pin for wakeup, but if an OEM configures a floating pin as an interrupt source then stopping it from being a wakeup won't do much good to stop the interrupt storm. Add support for a module parameter and quirk infrastructure to ignore interrupts as well. Tested-by: Pavel Krc Signed-off-by: Mario Limonciello --- drivers/gpio/gpiolib-acpi.c | 39 ++++++++++++++++++++++++++++++++----- 1 file changed, 34 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index c2523ac26fac..375942d92d6f 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -32,9 +32,21 @@ MODULE_PARM_DESC(ignore_wake, "controller@pin combos on which to ignore the ACPI wake flag " "ignore_wake=controller@pin[,controller@pin[,...]]"); +static char *ignore_interrupt; +module_param(ignore_interrupt, charp, 0444); +MODULE_PARM_DESC(ignore_interrupt, + "controller@pin combos on which to ignore interrupt " + "ignore_interrupt=controller@pin[,controller@pin[,...]]"); + struct acpi_gpiolib_dmi_quirk { bool no_edge_events_on_boot; char *ignore_wake; + char *ignore_interrupt; +}; + +enum ignore_type { + IGNORE_WAKEUP, + IGNORE_INTERRUPT, }; /** @@ -317,14 +329,18 @@ static struct gpio_desc *acpi_request_own_gpiod(struct gpio_chip *chip, return desc; } -static bool acpi_gpio_in_ignore_list(const char *controller_in, unsigned int pin_in) +static bool acpi_gpio_in_ignore_list(const char *controller_in, unsigned int pin_in, + enum ignore_type type) { - const char *controller, *pin_str; + const char *controller = NULL, *pin_str; unsigned int pin; char *endp; int len; - controller = ignore_wake; + if (type == IGNORE_WAKEUP) + controller = ignore_wake; + else if (type == IGNORE_INTERRUPT) + controller = ignore_interrupt; while (controller) { pin_str = strchr(controller, '@'); if (!pin_str) @@ -348,7 +364,12 @@ static bool acpi_gpio_in_ignore_list(const char *controller_in, unsigned int pin return false; err: - pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_wake: %s\n", ignore_wake); + if (type == IGNORE_WAKEUP) + pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_wake: %s\n", + ignore_wake); + else if (type == IGNORE_INTERRUPT) + pr_err_once("Error: Invalid value for gpiolib_acpi.ignore_interrupt: %s\n", + ignore_interrupt); return false; } @@ -360,7 +381,7 @@ static bool acpi_gpio_irq_is_wake(struct device *parent, if (agpio->wake_capable != ACPI_WAKE_CAPABLE) return false; - if (acpi_gpio_in_ignore_list(dev_name(parent), pin)) { + if (acpi_gpio_in_ignore_list(dev_name(parent), pin, IGNORE_WAKEUP)) { dev_info(parent, "Ignoring wakeup on pin %u\n", pin); return false; } @@ -427,6 +448,11 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares, goto fail_unlock_irq; } + if (acpi_gpio_in_ignore_list(dev_name(chip->parent), pin, IGNORE_INTERRUPT)) { + dev_info(chip->parent, "Ignoring interrupt on pin %u\n", pin); + return AE_OK; + } + event = kzalloc(sizeof(*event), GFP_KERNEL); if (!event) goto fail_unlock_irq; @@ -1582,6 +1608,9 @@ static int __init acpi_gpio_setup_params(void) if (ignore_wake == NULL && quirk && quirk->ignore_wake) ignore_wake = quirk->ignore_wake; + if (ignore_interrupt == NULL && quirk && quirk->ignore_interrupt) + ignore_interrupt = quirk->ignore_interrupt; + return 0; } -- 2.34.1