From patchwork Thu Sep 15 02:13:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianqun Xu X-Patchwork-Id: 12976769 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D6BDAECAAD3 for ; Thu, 15 Sep 2022 02:13:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1AUodBem7SCWqW+iHfrvq2Kv/Ki0E7PDuD0CNf29/ts=; b=H/zSouTR6PTrGm qbzp51h8g2sdeFS4lPR6iJ/tRJujntu8mNqdBeBULX4ZVam59SgTl/J0JefW7NV4k6TwSq7h5Tl6c qoABXNTkKER2C2oherYnSKEGBVBGVJQTZIgfBaDDThrTisKq4mWAW5mOrI4Mb5PPDiNy+qwC3lXjv Zqe+3ByHqs+fLb3pjX66tkUJ1kC7o19HmkRoP47yEh8pGt34Qo88UBrfMqMl8kufwrQFDijHT+9VE BwrPtMGcIiCXwvEK5PekmtBhImu0nNQJ8dwB04m3IakiQGI+zpzFsfxyDodLTD7m83goslGUzdtxF l4JJ8qZo65LToix4N8hg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oYeNm-00F8NQ-AW; Thu, 15 Sep 2022 02:13:38 +0000 Received: from mail-m11873.qiye.163.com ([115.236.118.73]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oYeNf-00F7sD-28 for linux-rockchip@lists.infradead.org; Thu, 15 Sep 2022 02:13:34 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m11873.qiye.163.com (Hmail) with ESMTPA id 96D5B900448; Thu, 15 Sep 2022 10:13:22 +0800 (CST) From: Jianqun Xu To: jbx6244@gmail.com, heiko@sntech.de, linus.walleij@linaro.org, andriy.shevchenko@linux.intel.com Cc: brgl@bgdev.pl, linux-gpio@vger.kernel.org, linux-rockchip@lists.infradead.org, Hans de Goede Subject: [PATCH 1/3] ACPI: utils: Add acpi_dev_uid_to_integer() helper to get _UID as integer Date: Thu, 15 Sep 2022 10:13:18 +0800 Message-Id: <20220915021320.80364-2-jay.xu@rock-chips.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220915021320.80364-1-jay.xu@rock-chips.com> References: <20220915021320.80364-1-jay.xu@rock-chips.com> MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFJSktLSjdXWS1ZQUlXWQ8JGhUIEh9ZQVkaHx1CVktCS0kfQ0tNH00aSFUTARMWGhIXJB QOD1lXWRgSC1lBWU5DVUlJVUxVSkpPWVdZFhoPEhUdFFlBWU9LSFVKSktISkxVSktLWQY+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6MBQ6CQw4KD0oDC1WFQsNMxIa ATQwCQJVSlVKTU1ISUtDS0tISUlMVTMWGhIXVREaAlUDDjsJFBgQVhgTEgsIVRgUFkVZV1kSC1lB WU5DVUlJVUxVSkpPWVdZCAFZQUhMTE83Bg++ X-HM-Tid: 0a833eec14eb2eafkusn96d5b900448 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220914_191331_273527_1BBD4503 X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: Andy Shevchenko Some users interpret _UID only as integer and for them it's easier to have an integer representation of _UID. Add respective helper for that. Signed-off-by: Andy Shevchenko Reviewed-by: Hans de Goede --- drivers/acpi/utils.c | 24 ++++++++++++++++++++++++ include/acpi/acpi_bus.h | 1 + include/linux/acpi.h | 5 +++++ 3 files changed, 30 insertions(+) diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 5a7b8065e77f..febf9b8da3a0 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -793,6 +793,30 @@ bool acpi_dev_hid_uid_match(struct acpi_device *adev, } EXPORT_SYMBOL(acpi_dev_hid_uid_match); +/** + * acpi_dev_uid_to_integer - treat ACPI device _UID as integer + * @adev: ACPI device to get _UID from + * @integer: output buffer for integer + * + * Considers _UID as integer and converts it to @integer. + * + * Returns 0 on success, or negative error code otherwise. + */ +int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer) +{ + const char *uid; + + if (!adev) + return -ENODEV; + + uid = acpi_device_uid(adev); + if (!uid) + return -ENODATA; + + return kstrtou64(uid, 0, integer); +} +EXPORT_SYMBOL(acpi_dev_uid_to_integer); + /** * acpi_dev_found - Detect presence of a given ACPI device in the namespace. * @hid: Hardware ID of the device. diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e7d27373ff71..bd0db916f330 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -733,6 +733,7 @@ static inline bool acpi_device_can_poweroff(struct acpi_device *adev) } bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2); +int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer); void acpi_dev_clear_dependencies(struct acpi_device *supplier); bool acpi_dev_ready_for_enumeration(const struct acpi_device *device); diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6f64b2f3dc54..9434db02cb60 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -798,6 +798,11 @@ acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *u return false; } +static inline int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer) +{ + return -ENODEV; +} + static inline struct acpi_device * acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv) {