From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f173.google.com (mail-dy1-f173.google.com [74.125.82.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1B4C83B9DA2 for ; Sat, 11 Apr 2026 16:23:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775924630; cv=none; b=gJS3KIN+YkHgToquVFiHbdBMsWaQhEdMmBSCGVN+QdN/O1BgRca47ZIkFi5yzdzbjQNzVc45CoOiMyPn/WRU0QvWUwNzjjpEcjqf+kdxx2KsOA5iyl0zqOu1aMHoEwQ/ODSmO+7K5SGykN/wNNF0Nlmfecil3mfUv/KrCF84VjU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775924630; c=relaxed/simple; bh=nw7kdTs1biYqcCyLBgFFjUVOcmzqKE/6nPTRSBdw19M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=k3Q+dpz37YqHTdqzlhql7TKnuPZKIWL2pSnD8drFB7dEV+tdMpO9xkQje391ZWaM4hjY+ulgbsH9EmkqgGZAl6jeggrJ3NvIom6btKLCZPRcVnTe8v5ZemdYBBI/OV+hA7Rm7QR0U/S+Jmm0FV2bJoCm1a7+qGtfUPDPuntloHk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=ZP8luJlb; arc=none smtp.client-ip=74.125.82.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZP8luJlb" Received: by mail-dy1-f173.google.com with SMTP id 5a478bee46e88-2d78e5d275aso851945eec.0 for ; Sat, 11 Apr 2026 09:23:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1775924628; x=1776529428; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=mZGzwivOSp3+FMEX/5WCBroL/DIUwpA8g1utSU5YDlE=; b=ZP8luJlbnRM9UbA61NFldvLVadf9xb7rcn/vhpJUYild6hB/Idg1VY9MpbBhh+FaM6 82QnQEl5vnR1cZjkLZL7t4M6beKJEa2VntoL2G3i/lHPA3dvfpdzhQow6Vq2ofPhcI5Q wMTFH/ePzREBcaKdr9T+fgN+JWCncdHtUTATIOme9mOi/hhw0YRE4c6hgZbhUF0pClnu KdPdrOzfPZ+38CcN8MOgs9/EesoqNR3oG/T6Gdy/HxcCmg1SDu4m8cl1jdz0Stbcljt+ lxKvDn0MhWGy3WHRNTG/vlhVOfYU3i3ab0AYoG/GdbJ9Mr5KAdiS1ncsXCWw/LaJadBM Qntg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775924628; x=1776529428; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=mZGzwivOSp3+FMEX/5WCBroL/DIUwpA8g1utSU5YDlE=; b=i5X9P83b+4QjiazVnEl0qv4AVbmGZMnYta0i1WeJDzvn9cOCCNnRbXD3TLpxkO20cz iLKm+wzRMxD5Rrn2N139vDSezGqzkhiVTdqhltK8W5mIlK7EAaXMX5qHWzAwSSOgI/kJ +/3s6Kcf6627gWI96IZJXUtZs6ai9AR0BXuAUeeueJp8DRJmnN34qETUuTn2S2ezCzwo OwYEeZ+mzmL5l2vR2IhBf+bgbZ3QqtvryJhDia5h/yeqONbhR9qMhmtpL933lm4unGI8 fnzJ/3RHOqufW56+GAGb3wHiYwZEZixXFwZVonnW+m408qjIKNRU00evqZL3Jh4HB7UH n8Wg== X-Forwarded-Encrypted: i=1; AJvYcCWodfkdLulM++GmFIVsYjF4xqrO5jM3ZgxowHZVimYmqWmfkbWN7iMa2Ij+zOawC/5xA8/InzrnZnqfxdQ=@vger.kernel.org X-Gm-Message-State: AOJu0Yw48MNJGaLv8kYeiGTnuHA/HpRDjO7SrOr87cIcDSMt8NkkgU7X sZ0Qo4fHtwFmdiw8UFP8vzbbrmWTb0glIWXmLxocUKZWVAzmwH0kR+XN X-Gm-Gg: AeBDieupEeL6QHZ1oKLCLTaXUjW0oLFgq5WQXSzPOEkP3ZIS3Cf1sznmJVkAWw/G7KA YhsMFQc/8AZcL3OaWprD/lWA1GpYOKtE4qjzfnbZBssFVH2bBSCfJozMyRaBG7X/ZxmbsqJrBGe i7TCsVcSRMehjUtgtCtPRxugcLFAQqkKssGsGn+T6dBAwafhMfNjPeJdNqhHnk3uw3CXk6LaS2K OXZZLQf91hGdxaYH8i33mezmQnZRtgshHtcu4uqge9EDEHX0PEmYPaqt6cnJ4UzhP1D3yBbGutB +F7ETbiWygGcAQkUb7iBDRjkfwjVSQSkqa4ivixrbUFfh3XWVym+pP93zhJDSU+QxrhKcWb9iET fgdpN1fkoPCCCJv/Lae/0iCnUB1B3sdstzphtXk4MShyqlKkReEp9fmyKZ8R29+CnF+lGTVsTaW vm7Z7BGW6u0efLQZNm5ZiZI7sF3e807Ld7HygVYn6ojUGMTJjGLJNdI6Qyq/IPIlzPvYpLJdlM+ iYI97adwS9K/vE= X-Received: by 2002:a05:7300:df05:b0:2d2:d7b7:5c70 with SMTP id 5a478bee46e88-2d5881b0358mr5154606eec.15.1775924628184; Sat, 11 Apr 2026 09:23:48 -0700 (PDT) Received: from lappy (108-228-232-20.lightspeed.sndgca.sbcglobal.net. [108.228.232.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2d55ce46a65sm9358907eec.0.2026.04.11.09.23.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Apr 2026 09:23:47 -0700 (PDT) From: "Derek J. Clark" To: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Hans de Goede Cc: Mark Pearson , Armin Wolf , Jonathan Corbet , Rong Zhang , Kurt Borja , "Derek J . Clark" , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v9 15/16] platform/x86: lenovo-wmi-helpers: Add helper for creating per-device debugfs dir Date: Sat, 11 Apr 2026 16:23:33 +0000 Message-ID: <20260411162334.25682-16-derekjohn.clark@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260411162334.25682-1-derekjohn.clark@gmail.com> References: <20260411162334.25682-1-derekjohn.clark@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Rong Zhang We are about to add debugfs support for lenovo-wmi-capdata. Let's setup a debugfs directory called "lenovo_wmi" for tidiness, so that any lenovo-wmi-* device can put its subdirectory under the directory. Subdirectories will be named after the corresponding WMI devices. Signed-off-by: Rong Zhang Signed-off-by: Derek J. Clark --- v7: - Use subsys_initcall() instead of module_init(). --- drivers/platform/x86/lenovo/wmi-helpers.c | 34 +++++++++++++++++++++++ drivers/platform/x86/lenovo/wmi-helpers.h | 2 ++ 2 files changed, 36 insertions(+) diff --git a/drivers/platform/x86/lenovo/wmi-helpers.c b/drivers/platform/x86/lenovo/wmi-helpers.c index 7a198259e393..82dfd26c9c2b 100644 --- a/drivers/platform/x86/lenovo/wmi-helpers.c +++ b/drivers/platform/x86/lenovo/wmi-helpers.c @@ -17,6 +17,8 @@ */ #include +#include +#include #include #include #include @@ -185,6 +187,38 @@ int lwmi_tm_notifier_call(enum thermal_mode *mode) } EXPORT_SYMBOL_NS_GPL(lwmi_tm_notifier_call, "LENOVO_WMI_HELPERS"); +static struct dentry *lwmi_debugfs_dir; + +/** + * lwmi_debugfs_create_dir() - Helper function for creating a debugfs directory + * for a device. + * @wdev: Pointer to the WMI device to be called. + * + * Caller must remove the directory with debugfs_remove_recursive() on device + * removal. + * + * Return: Pointer to the created directory. + */ +struct dentry *lwmi_debugfs_create_dir(struct wmi_device *wdev) +{ + return debugfs_create_dir(dev_name(&wdev->dev), lwmi_debugfs_dir); +} +EXPORT_SYMBOL_NS_GPL(lwmi_debugfs_create_dir, "LENOVO_WMI_HELPERS"); + +static int __init lwmi_helpers_init(void) +{ + lwmi_debugfs_dir = debugfs_create_dir("lenovo_wmi", NULL); + + return 0; +} +subsys_initcall(lwmi_helpers_init) + +static void __exit lwmi_helpers_exit(void) +{ + debugfs_remove_recursive(lwmi_debugfs_dir); +} +module_exit(lwmi_helpers_exit) + MODULE_AUTHOR("Derek J. Clark "); MODULE_DESCRIPTION("Lenovo WMI Helpers Driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/platform/x86/lenovo/wmi-helpers.h b/drivers/platform/x86/lenovo/wmi-helpers.h index ed7db3ebba6c..039fe61003ce 100644 --- a/drivers/platform/x86/lenovo/wmi-helpers.h +++ b/drivers/platform/x86/lenovo/wmi-helpers.h @@ -16,6 +16,8 @@ struct wmi_method_args_32 { u32 arg1; }; +struct dentry *lwmi_debugfs_create_dir(struct wmi_device *wdev); + enum lwmi_event_type { LWMI_GZ_GET_THERMAL_MODE = 0x01, }; -- 2.53.0