From patchwork Thu Feb 25 16:33:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 387432 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, 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 B8604C43381 for ; Thu, 25 Feb 2021 16:35:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D83E64F0D for ; Thu, 25 Feb 2021 16:35:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232081AbhBYQf1 (ORCPT ); Thu, 25 Feb 2021 11:35:27 -0500 Received: from mga04.intel.com ([192.55.52.120]:23417 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229491AbhBYQfZ (ORCPT ); Thu, 25 Feb 2021 11:35:25 -0500 IronPort-SDR: BWmZn0nrYFxX/yPng1Oq6YrRVddigAtqdrikFOEkF2iKBoYiGYybvLq6g7lRjEDlS4joXXTAqC Gy8m2yauFA+w== X-IronPort-AV: E=McAfee;i="6000,8403,9906"; a="183121944" X-IronPort-AV: E=Sophos;i="5.81,206,1610438400"; d="scan'208";a="183121944" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Feb 2021 08:33:36 -0800 IronPort-SDR: T1Ge9WxhzvXEhcooAwOVp0+pMeHWXu+34JcatmVsdKVaP+LDAul7MBuVbJTZNi/DKlOrImNeQG 3qVbV8GgkJgw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,206,1610438400"; d="scan'208";a="371780954" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga007.fm.intel.com with ESMTP; 25 Feb 2021 08:33:34 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id ED713F2; Thu, 25 Feb 2021 18:33:33 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Bartosz Golaszewski , Mika Westerberg , Linus Walleij , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Cc: "Rafael J. Wysocki" , Len Brown Subject: [PATCH v1 1/3] gpiolib: acpi: Add ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirk Date: Thu, 25 Feb 2021 18:33:18 +0200 Message-Id: <20210225163320.71267-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210225163320.71267-1-andriy.shevchenko@linux.intel.com> References: <20210225163320.71267-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org On some systems the ACPI tables has wrong pin number and instead of having a relative one it provides an absolute one in the global GPIO number space. Add ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirk to cope with such cases. Fixes: ba8c90c61847 ("gpio: pca953x: Override IRQ for one of the expanders on Galileo Gen 2") Depends-on: 0ea683931adb ("gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip") Signed-off-by: Andy Shevchenko Acked-by: Linus Walleij --- drivers/gpio/gpiolib-acpi.c | 7 ++++++- include/linux/gpio/consumer.h | 2 ++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index e37a57d0a2f0..026ef258d4b9 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -677,6 +677,7 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) if (!lookup->desc) { const struct acpi_resource_gpio *agpio = &ares->data.gpio; bool gpioint = agpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT; + struct gpio_desc *desc; u16 pin_index; if (lookup->info.quirks & ACPI_GPIO_QUIRK_ONLY_GPIOIO && gpioint) @@ -689,8 +690,12 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data) if (pin_index >= agpio->pin_table_length) return 1; - lookup->desc = acpi_get_gpiod(agpio->resource_source.string_ptr, + if (lookup->info.quirks & ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER) + desc = gpio_to_desc(agpio->pin_table[pin_index]); + else + desc = acpi_get_gpiod(agpio->resource_source.string_ptr, agpio->pin_table[pin_index]); + lookup->desc = desc; lookup->info.pin_config = agpio->pin_config; lookup->info.debounce = agpio->debounce_timeout; lookup->info.gpioint = gpioint; diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index ef49307611d2..c73b25bc9213 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -674,6 +674,8 @@ struct acpi_gpio_mapping { * get GpioIo type explicitly, this quirk may be used. */ #define ACPI_GPIO_QUIRK_ONLY_GPIOIO BIT(1) +/* Use given pin as an absolute GPIO number in the system */ +#define ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER BIT(2) unsigned int quirks; };