From nobody Sun Feb 8 02:59:52 2026 Received: from out-176.mta1.migadu.com (out-176.mta1.migadu.com [95.215.58.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9EA232F56 for ; Sun, 2 Nov 2025 21:53:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762120416; cv=none; b=PK4Dxr0gSFMa94ugcOwyVPPKo8c/R2dEUyydXLHgkw3sR1c0VnfqZRPPjr4waHwTKeNEH4zbHr5/gZ2F/akNrBph2Xp8BCygo4Sk2XYR24Ko1QrUqhyIzo+Z2+I58NMgJflsqkSr2jOI4BgPK6RvfIRc8L6MiQG6+pgUhiVKF2w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762120416; c=relaxed/simple; bh=R775RbbRNLEfj9HOIS+utZQnt0MZztHOU4GczwBLvKQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IKJrlCmPvLjXeKJar1DPpt9BVL+7ESK1psBZP0M4HoWoHl90yazM9JNPxMkuGvuOVxXQ3scDW7mhq7a44QG6AMG59DsCaRT6auoVkNZFTceOC6Yq3mInr/dQdwmV5GkQYtPkkxaCvgPIgZ4IS9vuz9JYKYQK4IVbbzP1pNDtbIc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=KtbPm6ed; arc=none smtp.client-ip=95.215.58.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="KtbPm6ed" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1762120411; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2bW5Lixhn8DqnxY2a2XosMQ9BFafeoOUC56dKRfdU7Q=; b=KtbPm6edfzU0ukanJxNHFpxG7b26kB0soZJslXgaxSqFaZ0jK2WQ3jm02FclvefgDnZmOG naj+o5c8dn+vVZjB+7k90NWOlOErOq3y9totqD3SmXKXlv5I5jsNMw6wKaVxUzmJNLgESy ZzV1koT96oJuVO7cM88LWh43XuiihIU= From: Denis Benato To: linux-kernel@vger.kernel.org Cc: platform-driver-x86@vger.kernel.org, "Hans de Goede" , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , "Limonciello, Mario" , "Luke D . Jones" , "Alok Tiwari" , "Derek John Clark" , "Mateusz Schyboll" , porfet828@gmail.com, "Denis Benato" , Denis Benato Subject: [PATCH v17 1/9] platform/x86: asus-wmi: export symbols used for read/write WMI Date: Sun, 2 Nov 2025 22:53:11 +0100 Message-ID: <20251102215319.3126879-2-denis.benato@linux.dev> In-Reply-To: <20251102215319.3126879-1-denis.benato@linux.dev> References: <20251102215319.3126879-1-denis.benato@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" From: "Luke D. Jones" Export symbols for reading/writing WMI symbols using a namespace. Existing functions: - asus_wmi_evaluate_method - asus_wmi_set_devstate New function: - asus_wmi_get_devstate_dsts The new function is intended for use with DSTS WMI method only and avoids requiring the asus_wmi driver data to select the WMI method. Co-developed-by: Denis Benato Signed-off-by: Denis Benato Signed-off-by: Luke D. Jones Reviewed-by: Mario Limonciello --- drivers/platform/x86/asus-wmi.c | 46 ++++++++++++++++++++-- include/linux/platform_data/x86/asus-wmi.h | 5 +++ 2 files changed, 48 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wm= i.c index e72a2b5d158e..c3e90517ce0f 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -390,7 +390,7 @@ int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u= 32 arg1, u32 *retval) { return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); } -EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); +EXPORT_SYMBOL_NS_GPL(asus_wmi_evaluate_method, "ASUS_WMI"); =20 static int asus_wmi_evaluate_method5(u32 method_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4, u32 *retval) @@ -554,12 +554,52 @@ static int asus_wmi_get_devstate(struct asus_wmi *asu= s, u32 dev_id, u32 *retval) return 0; } =20 -int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, - u32 *retval) +/** + * asus_wmi_get_devstate_dsts() - Get the WMI function state. + * @dev_id: The WMI method ID to call. + * @retval: A pointer to where to store the value returned from WMI. + * + * Returns: + * * %-ENODEV - method ID is unsupported. + * * %0 - successful and retval is filled. + * * %other - error from WMI call. + */ +int asus_wmi_get_devstate_dsts(u32 dev_id, u32 *retval) +{ + int err; + + err =3D asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, dev_id, 0, retva= l); + if (err) + return err; + + if ((*retval & ASUS_WMI_DSTS_PRESENCE_BIT) =3D=3D 0x00) + return -ENODEV; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(asus_wmi_get_devstate_dsts, "ASUS_WMI"); + +/** + * asus_wmi_set_devstate() - Set the WMI function state. + * + * Note: an asus_wmi_set_devstate() call must be paired with a + * asus_wmi_get_devstate_dsts() to check if the WMI function is supported. + * + * @dev_id: The WMI function to call. + * @ctrl_param: The argument to be used for this WMI function. + * @retval: A pointer to where to store the value returned from WMI. + * + * Returns: + * * %-ENODEV - method ID is unsupported. + * * %0 - successful and retval is filled. + * * %other - error from WMI call. + */ +int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, u32 *retval) { return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id, ctrl_param, retval); } +EXPORT_SYMBOL_NS_GPL(asus_wmi_set_devstate, "ASUS_WMI"); =20 /* Helper for special devices with magic return codes */ static int asus_wmi_get_devstate_bits(struct asus_wmi *asus, diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/pla= tform_data/x86/asus-wmi.h index 8a515179113d..dbd44d9fbb6f 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -166,6 +166,7 @@ enum asus_ally_mcu_hack { #if IS_REACHABLE(CONFIG_ASUS_WMI) void set_ally_mcu_hack(enum asus_ally_mcu_hack status); void set_ally_mcu_powersave(bool enabled); +int asus_wmi_get_devstate_dsts(u32 dev_id, u32 *retval); int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, u32 *retval); int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retva= l); #else @@ -179,6 +180,10 @@ static inline int asus_wmi_set_devstate(u32 dev_id, u3= 2 ctrl_param, u32 *retval) { return -ENODEV; } +static inline int asus_wmi_get_devstate_dsts(u32 dev_id, u32 *retval) +{ + return -ENODEV; +} static inline int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 ar= g1, u32 *retval) { --=20 2.51.2