From nobody Fri Nov 29 02:33:34 2024 Received: from fout-a7-smtp.messagingengine.com (fout-a7-smtp.messagingengine.com [103.168.172.150]) (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 B42BC1ABED5; Thu, 26 Sep 2024 09:30:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=103.168.172.150 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727343009; cv=none; b=DZrmMFKUKc5YkoeSKHzBdDBDQamcE1ExR8DvNCIwOr+vHyq3w2NoRBd3PHS3FgwMo273MMt91IhfVhS8CybllV9IsgDXy2YO2MzQNGjR1P/JStqCHWwoIG+MGosNnjNSBe4noiANh2Drnd4OYfT8D56eeZh3t7BR2c7sOxPsp54= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727343009; c=relaxed/simple; bh=zsbRkyzNSonszgB1fav/nb4FYQkIMx5xZ1ZvQr0ayyo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bs9aREBDatuLQqIxzNCyr6+bNSsMzjyzbwCrSHtVL3ugqqosNrK/P5avxG6yGWKV4wtSH8FysEPuwJvzyPkgYeS4qHG5j6+HHRk+cl86xMvDTHYPS1ZLLQ7tqMGpLLtlXdevD97dpLT/BA4masEEvc0LTvwsUYibHT4GiW1WbV4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ljones.dev; spf=none smtp.mailfrom=ljones.dev; dkim=pass (2048-bit key) header.d=ljones.dev header.i=@ljones.dev header.b=qgBemQmy; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=kJ4T6Ri2; arc=none smtp.client-ip=103.168.172.150 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ljones.dev Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=ljones.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ljones.dev header.i=@ljones.dev header.b="qgBemQmy"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="kJ4T6Ri2" Received: from phl-compute-10.internal (phl-compute-10.phl.internal [10.202.2.50]) by mailfout.phl.internal (Postfix) with ESMTP id D604213805B3; Thu, 26 Sep 2024 05:30:06 -0400 (EDT) Received: from phl-mailfrontend-02 ([10.202.2.163]) by phl-compute-10.internal (MEProxy); Thu, 26 Sep 2024 05:30:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ljones.dev; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=fm3; t=1727343006; x= 1727429406; bh=Inw53UNpAFlpnBuwryo5a7zcqnZJAu4EMlcVbyNts/k=; b=q gBemQmy4uDoilNdz5W+0vp6Y3BWsIUx0WjyK+/OjfNVL0ph3Lw6Q3M+wUFIqU3s1 wNzR6T+1h24Js2eTujtf6EqwlYmxuLgbM5lIVzIsWdFKo5pLRfWfTIApk+TQ64lN bYVEPHAMEmeYd1u5JcHBAMd+aMOihyA9YgP38Vtdw9S9j5FFGYAIIPuBGg7jRSQ3 AxSHv8RuKW//XmmaRMDR72F0dTwOCVFOKcUNCzskXgj5GprL3eVotN4/r96WcUe/ ZOxMWIKNCmlALzBKehf4Xo/2dS/IyckMNekkHCVL3o6t4t0kMGNXT6FqfoMSSYpu mrgQjud7VIYw3knu6xJQg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1727343006; x= 1727429406; bh=Inw53UNpAFlpnBuwryo5a7zcqnZJAu4EMlcVbyNts/k=; b=k J4T6Ri252BaWpSJ2KYRFWsaX+OzOAnn85Xoa//SiHYdKeYc9p9VRf4h0YMN3/2XL LkmDqFxiGQkkvVmDKxmoUQ05z0QyFrF9JN5sAqFI6VPrwTGRbi5uyM2Yb1lGGPKq FwRJWi25SKFmT14iqB+OVKqLNMbWYsthfmlQcFcuhR8u/gFvemlpmX/7WIQw6wyi K/6ytal5YxogYZ4WsasRi1h45+UZb9QB6CiMGPbJfsPLmMK4p+Y29GRuZA15LnPk lOfRaBnBgdTGzPYr+tM/DULMxuFbT+33s9crUFozY+Ln/4QeYxWoSed3ErtK/XP1 iPwCdmLZ1NBQ0LIoRMykQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeftddrvddtjedgudejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdggtfgfnhhsuhgsshgtrhhisggvpdfu rfetoffkrfgpnffqhgenuceurghilhhouhhtmecufedttdenucenucfjughrpefhvfevuf ffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpedfnfhukhgvucffrdculfhonhgv shdfuceolhhukhgvsehljhhonhgvshdruggvvheqnecuggftrfgrthhtvghrnhepgfetfe dugfetudeuheetjefhuefggfelleetvdevtefhueeujeefvdegleevhefgnecuvehluhhs thgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomheplhhukhgvsehljhhonh gvshdruggvvhdpnhgspghrtghpthhtohepuddtpdhmohguvgepshhmthhpohhuthdprhgt phhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprh gtphhtthhopehlihhnuhigqdhinhhpuhhtsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhr tghpthhtohepsggvnhhtihhssheskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepjhhikh hosheskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepphhlrghtfhhorhhmqdgurhhivhgv rhdqgiekieesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehilhhpohdrjh grrhhvihhnvghnsehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtohephhguvghg ohgvuggvsehrvgguhhgrthdrtghomhdprhgtphhtthhopegtohhrvghnthhinhdrtghhrg hrhiesghhmrghilhdrtghomhdprhgtphhtthhopehsuhhpvghrmhdusehkvghrnhgvlhdr ohhrgh X-ME-Proxy: Feedback-ID: i5ec1447f:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 26 Sep 2024 05:30:02 -0400 (EDT) From: "Luke D. Jones" To: linux-kernel@vger.kernel.org Cc: linux-input@vger.kernel.org, bentiss@kernel.org, jikos@kernel.org, platform-driver-x86@vger.kernel.org, ilpo.jarvinen@linux.intel.com, hdegoede@redhat.com, corentin.chary@gmail.com, superm1@kernel.org, "Luke D. Jones" Subject: [PATCH v4 1/9] platform/x86: asus-wmi: export symbols used for read/write WMI Date: Thu, 26 Sep 2024 21:29:44 +1200 Message-ID: <20240926092952.1284435-2-luke@ljones.dev> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20240926092952.1284435-1-luke@ljones.dev> References: <20240926092952.1284435-1-luke@ljones.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 Content-Type: text/plain; charset="utf-8" Export some rather helpful read/write WMI symbols using a namespace. These are DEVS and DSTS only, or require the arg0 input. Also does a slight refactor of internals of these functions. Signed-off-by: Luke D. Jones Reviewed-by: Mario Limonciello --- drivers/platform/x86/asus-wmi.c | 51 ++++++++++++++++++++-- include/linux/platform_data/x86/asus-wmi.h | 10 +++++ 2 files changed, 58 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wm= i.c index 6725a27df62f..0a5221d65130 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -385,7 +385,7 @@ 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) @@ -549,12 +549,57 @@ static int asus_wmi_get_devstate(struct asus_wmi *asu= s, u32 dev_id, u32 *retval) return 0; } =20 -static 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 function to call. + * @retval: A pointer to where to store the value returned from WMI. + * + * The returned WMI function state can also be used to determine if the WMI + * function is supported by checking if the asus_wmi_get_devstate_dsts() + * returns an error. + * + * On success the return value is 0, and the retval is a valid value retur= ned + * by the successful WMI function call. An error value is returned only if= the + * WMI function failed, or if it returns "unsupported" which is typically = a 0 + * (no return, and no 'supported' bit set), or a 0xFFFFFFFE (~1) which if = not + * caught here can result in unexpected behaviour later. + */ +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; + + *retval &=3D ~ASUS_WMI_DSTS_PRESENCE_BIT; + if (*retval =3D=3D ASUS_WMI_UNSUPPORTED_METHOD) + return -ENODEV; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(asus_wmi_get_devstate_dsts, ASUS_WMI); + +/** + * asus_wmi_set_devstate() - Set the WMI function state. + * @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. + * + * The returned WMI function state if not checked here for error as + * asus_wmi_set_devstate() is not called unless first paired with a call to + * asus_wmi_get_devstate_dsts() to check that the WMI function is supporte= d. + * + * On success the return value is 0, and the retval is a valid value retur= ned + * by the successful WMI function call. An error value is returned only if= the + * WMI function failed. + */ +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 365e119bebaa..6ea4dedfb85e 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -158,8 +158,18 @@ #define ASUS_WMI_DSTS_LIGHTBAR_MASK 0x0000000F =20 #if IS_REACHABLE(CONFIG_ASUS_WMI) +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 +static inline int asus_wmi_get_devstate_dsts(u32 dev_id, u32 *retval) +{ + return -ENODEV; +} +static inline int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param, u32 *r= etval) +{ + return -ENODEV; +} static inline int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 ar= g1, u32 *retval) { --=20 2.46.1