From patchwork Sun Jan 5 17:41:55 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pengyu Luo X-Patchwork-Id: 855365 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) (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 7AB0D150980; Sun, 5 Jan 2025 17:44:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099052; cv=none; b=nvzBEYHDqXs907ErJJMT+9JkvuIVLynZKkOWAHMkogB8FLNziy5ZB4NdFxQ54HE6r94oeV8S51MuDMqoQceAlRemKzskK1cDWbGMJSNOEyRQIwRrXf/aYnsb+BDPX0NM9fjdRccCiJVFdgEhHajKsK6gghHukkv4Z2ipi6pwC+Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099052; c=relaxed/simple; bh=SsJ2nIH7zhgX3bhLQ/5arHhAxQzX7v2lgKf2tN9SYDI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Jz1Xnx4sAqnjpiIAr8nxIZWyJX3sCK4VCtvuEnc7ZjL6MgYWSJdMpqbi/tiArhJPkLtWM01sVa4j4w3jf+FXake5gLfYlF9nKGiBhVTqbmpO1zDt3aSNEYhOaudWIOMFWTwR3NEH8tXH5/tMPaKzxcJCM+4qnn5ck3c60+Cycb4= 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=L5ZwCUFq; arc=none smtp.client-ip=209.85.214.176 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="L5ZwCUFq" Received: by mail-pl1-f176.google.com with SMTP id d9443c01a7336-2162c0f6a39so201184255ad.0; Sun, 05 Jan 2025 09:44:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736099050; x=1736703850; 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=0FP8JF37fOOztONXH0znKizD1r51roxZMEdyoSYLxZ4=; b=L5ZwCUFqowdHAV7kydjGUPYM32q0vZ+2K4cXB9g/3i0KLAjU4264kDoz67omtsUxA0 TGihVG/btchMnXgpOPVO5xG9v7kCDowfglGgSXOjQyytM0nnX40Sf7nA+W3kxJC/945C i+Q7bTft9hVZXOzNREN5jHkihI9IcQNOyHEyjNyHqAQr3MtxQ45yD03dh+WzTCiu0jJM O0LPt2+lR4bBPvYrGdjM3UTXifb8aoh7mRTMJDoDSe/QWrfCz5rcyIjZc/RHs/P0yFPD w2UbLDf4/ZIu7GewZtG4rsMd+PDk6vFqHcH9F1LeKcTYy1cLs7RYEpKe7GGPFArILtA0 8M2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736099050; x=1736703850; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0FP8JF37fOOztONXH0znKizD1r51roxZMEdyoSYLxZ4=; b=Bk5wVxtYSk1DDn+hKNtnaz4H8H+N5YsEC9/jqdmvDAMfh4EhDdYNcf0TavXraOmZWE kNaHUZh3Q1H4FZue08pJNdPu3RqclUemR0L/VLTdSYu5JznpzdwlYhZkWWk/9wAJ96hU tEcmyHFCehchxbIw+YVqtfuthyEZ1yvt2PXfbgTFaBcLRHibu4XkvVpafdK5JIl3DdAx PMuH30eTktqRzhNfjswwJsHwcjnuF4gf5WM5p/mLmDyXMhjvW8lPf6D0O61vu8T330u1 LMoX0J8thAxHrruZO5lLqyyGRcXbiQc91nLun+KeUSvcmZqp4wlQ6mpqwyjKRrJnJjjF VfFQ== X-Forwarded-Encrypted: i=1; AJvYcCU/zzNeL3w9XKjsM0wZgSy26ZBpmbeB0rfXS+2UB8/FrX01kl9wLo7/omKbXDY2pyOiRvvLKh9p2H6hXpw=@vger.kernel.org, AJvYcCUDF+GZE3NMt0sRrvDnDaklnXq7J+YAxqkYlmBJZtcT6puFRHPt3TBSJiOskr7E7Bd0IqBSG1hcPvb+HFQF77WJ5maSfw==@vger.kernel.org, AJvYcCURo75GdHMlZ1EXjboilRhPAxVKANcKDvfdK+nYbtIA15pUtgw1Hi90LwTRF1FZBrrUycK7c99V4j4V/PxT@vger.kernel.org, AJvYcCVUhGKAubwSKxfQ4E3g+/TO8rn+qMI0ts077Q2uSLrTRGDAItcPU8yGLWVxMG6MljXDe99buthej/oCIgEj@vger.kernel.org, AJvYcCWUIwcHNvEpsrz8wUkQMzOqGidyfotnyuVPZLvruYM5zg99FhzstVBrL9E7uOGOm4nqE3R7+CAZdP0c@vger.kernel.org, AJvYcCWj2s1eocMtnPeYR4YHlek8f883M4X6zvbrEvxXxEGa2+0z/CzObWLUm8qgpHgInRRBplKnknYGsIg=@vger.kernel.org X-Gm-Message-State: AOJu0YwHYedJeJb572w96RjXo3nAPIwOoL6mAftIgwfwKYtX9tVnwEp+ vTt8i796OEf+8ZU29fcifhlnRWoo+uUlZEISVIXYcSTAfV2NMlet X-Gm-Gg: ASbGnctE1eLpGosXaXLx28Hss8epJbzxBoCxH2TKLS3wzp7zkM2D/hCJO7F5jvQ8ldZ +dzH2TAKq+jindgiXTQ2OVjxPlUT7yKxrQMkwNVVSLmejZxzT6kTL0KpCWXgeYeGonstGLWFpP/ 2AFgSAqGc9s25lzt6n3Ld132u4nC6HoxanzQ6mGnQ3jcFaSq4iPMd1qFFVsRCQqf5212V3OeEe2 udHhnCRK8BpXoRaQvGq3nhrzwMsVyS4/56NfsETriCqWO4SFzrBKBg= X-Google-Smtp-Source: AGHT+IGTc8rWvoDza2FaN/geBHMsJrWYntomG2besJ5VmrlXLGHDVS4FPvJdZC4cJHj/TisXjkoUvw== X-Received: by 2002:a05:6a21:3987:b0:1e1:eaff:2c23 with SMTP id adf61e73a8af0-1e5c6f160bemr75464885637.12.1736099049682; Sun, 05 Jan 2025 09:44:09 -0800 (PST) Received: from nuvole.. ([144.202.86.13]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-842abd5927fsm27375046a12.10.2025.01.05.09.43.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2025 09:44:08 -0800 (PST) From: Pengyu Luo To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Sebastian Reichel , Heikki Krogerus , Greg Kroah-Hartman , Jean Delvare , Guenter Roeck Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-hwmon@vger.kernel.org, Dmitry Baryshkov , Pengyu Luo Subject: [PATCH v2 1/5] dt-bindings: platform: Add Huawei Matebook E Go EC Date: Mon, 6 Jan 2025 01:41:55 +0800 Message-ID: <20250105174159.227831-2-mitltlatltl@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250105174159.227831-1-mitltlatltl@gmail.com> References: <20250105174159.227831-1-mitltlatltl@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add binding for the EC found in the Huawei Matebook E Go and Huawei Matebook E Go LTE 2-in-1 tablets, the former one is a QS sc8280xp based tablet, the latter one is QS sc8180x based tablet. This series has a codename, gaokun. More information about gaokun, please check https://bugzilla.kernel.org/show_bug.cgi?id=219645 Signed-off-by: Pengyu Luo --- .../bindings/platform/huawei,gaokun-ec.yaml | 127 ++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml diff --git a/Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml b/Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml new file mode 100644 index 000000000..149c0cbe4 --- /dev/null +++ b/Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/platform/huawei,gaokun-ec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Huawei Matebook E Go Embedded Controller + +maintainers: + - Pengyu Luo + +description: + Different from other Qualcomm Snapdragon sc8180x and sc8280xp-based + machines, the Huawei Matebook E Go tablets use embedded controllers + while others use a system called PMIC GLink which handles battery, + UCSI, USB Type-C DP Alt Mode. In addition, Huawei's implementation + also handles additional features, such as charging thresholds, FN + lock, smart charging, tablet lid status, thermal sensors, and more. + +properties: + compatible: + items: + - enum: + - huawei,gaokun2 + - huawei,gaokun3 + - const: huawei,gaokun-ec + + reg: + const: 0x38 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + interrupts: + maxItems: 1 + +patternProperties: + '^connector@[01]$': + $ref: /schemas/connector/usb-connector.yaml# + + properties: + reg: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - |+ + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + embedded-controller@38 { + compatible = "huawei,gaokun3", "huawei,gaokun-ec"; + reg = <0x38>; + + interrupts-extended = <&tlmm 107 IRQ_TYPE_LEVEL_LOW>; + + #address-cells = <1>; + #size-cells = <0>; + + connector@0 { + compatible = "usb-c-connector"; + reg = <0>; + power-role = "dual"; + data-role = "dual"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + ucsi0_ss_in: endpoint { + remote-endpoint = <&usb_0_qmpphy_out>; + }; + }; + + port@1 { + reg = <1>; + + ucsi0_sbu: endpoint { + remote-endpoint = <&usb0_sbu_mux>; + }; + }; + }; + }; + + connector@1 { + compatible = "usb-c-connector"; + reg = <1>; + power-role = "dual"; + data-role = "dual"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + ucsi1_ss_in: endpoint { + remote-endpoint = <&usb_1_qmpphy_out>; + }; + }; + + port@1 { + reg = <1>; + + ucsi1_sbu: endpoint { + remote-endpoint = <&usb1_sbu_mux>; + }; + }; + }; + }; + }; + }; From patchwork Sun Jan 5 17:41:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pengyu Luo X-Patchwork-Id: 855236 Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) (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 8739F150980; Sun, 5 Jan 2025 17:44:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099068; cv=none; b=tnofb+zUi/664ckCB6PO7dWxwS2Wx6PZxMe0ZIfGd2jUSAlA7PNXjagfDFQ3QyqasUe5t2f/uI5dC2fvmN7TeSQGZkDX/m9LW8R9yeN+l1Qld2fNy7jHCC8yJs6+hFDpAM6BgJdma5i4d1F7jJLwcxO6ldM7tOI4CQf4WwLwkjU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099068; c=relaxed/simple; bh=6iXLXb0ujAC0qOdyCZUbxGezjvKV0XO8+N+w0IaaoZk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GDV2w+hhrFexH0r4On/9L9yzG+vg0DmCc7ohqbCEEKeipYfadnQ03kUZsiojmk40PTdiLKDRS+3/Qcn7+EEmUUYacXR8aYQjPibx+78L7aZCINQajB+nYoyPHBs/QKhkVOhlg4AYIL5UDEtVMc1bLGlI4aIFU6sAV+JjE3ClT2g= 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=i4IzW+Lx; arc=none smtp.client-ip=209.85.214.169 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="i4IzW+Lx" Received: by mail-pl1-f169.google.com with SMTP id d9443c01a7336-21619108a6bso179780315ad.3; Sun, 05 Jan 2025 09:44:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736099065; x=1736703865; 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=ymaCNlL/RNvm0IWW6gKnUAy90BSclawi0O5FUcbHu/o=; b=i4IzW+LxbLlAxgazjLJsMNSU6uimRJdVdB7TS9g9Vk4NAArSKsY2AmwRILApVr0QgC t0GsvyE0QEK6+zO1IOCsh6EN9EhU4pDRVp/oyAbHAbId4MYuKZ5eVuLtkzqJGAv38Pzb KIERXXoP60M/6svwpeeZ/x2uFTqBlUjBWuGVPiv7zyaOXX1NBvJUljqCJCUAZZWEuvdx IRRdqLtbfHEIQgw/H3towDEB5HS8WRcpVYRqCaSPyezswNvCTFkUc+tvwpAjdHNFw7pT 4aZEn9/UEsrNTfXuoVRIOxHS0G09fppcRt8ShAkxIl/xFk/LAao5wc5T3NeoLUMj6Dzy xG8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736099065; x=1736703865; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ymaCNlL/RNvm0IWW6gKnUAy90BSclawi0O5FUcbHu/o=; b=L24CTk338aMNifG3wpHTwi126/KTUeE4pTy3pQXttsuC5WmgQ+o/i6si1yl1CtTF/J HsmTErAdpybAjvkWLOrd3vHXZPtuvHYMyY5LFInqiSBfe6HRlVwuExyw/mhyJcqrZaME YEmA0pbHIANz+5Jp6m9Hcqpx/44RueRbmaFzwaGQ4cK3HFeGhQ4D+gWG++sGiF00tZZ4 yoGx5J/zso02+dqdUHEkwI4hMdrGa9yWhY4kiZealVUfPqsbaeGPJ30wPCTjMdtOlLXR uprHoGHvQreAEaniKVeuqKXxLe7bzBfzqZzb45dmvK64vIFfEUmRLjz4ZeOuBK5u9zHj 8Vxg== X-Forwarded-Encrypted: i=1; AJvYcCU1ibkAwnTSCOzZd3Lm2X0siivHBOOHuNT/rZ/J/vAQDfTR8Ye1f2owjm7TpD1Of9IQ3ypTnK+sym4j9FM=@vger.kernel.org, AJvYcCVlPf9f/bMYtFlYKiobi9/jfwW0BApsXO0ILrK/2eORmvjTx0mevLIb1g8H6dvIVTptF9+nZ0XeuLfSIYNm@vger.kernel.org, AJvYcCW7C2XtaYpDJjs8LybFsHlb+BB/jr9wW49zPuUdD1mOcbDB3+irsE3Ua+1Rq7jhEgvVH6ZS2rtM2x70@vger.kernel.org, AJvYcCX5HtfWLfHpPuX9bnwhQJpphx8YTi1NVZcj40DlLqnQ5Q0vl8IqoCDNRjOw02TbDi/bm3cQNYRnodE=@vger.kernel.org, AJvYcCXAxP5KdbGZvKt3dtpuT4KZprVQUOF0KdS3+8AHN1AeaBRb7yKO/D/5W5R/Tug26e8gRx8tK6LXt2tJgVyhvDpCkP0xoQ==@vger.kernel.org, AJvYcCXCf+T8kekp90puq0u39EfPla8g1fUQBshlYH1jIamvSfVix6NELro6KEPLPOjGgfgrhvTg31qBuRadFPqj@vger.kernel.org X-Gm-Message-State: AOJu0YyrZAdCkNM88KjUt64GyNaavOY4xeyxoTUWC4NPHbJ85ksXSWE9 532EfHF95kJlJ2CcyZmdP3Hnva/csFvKKT71PdfPqQ9MIPNkwh4q X-Gm-Gg: ASbGnctSP5Puh52JQbG+4pKfrD89WWvKx3iZ7hwEC015rmstW5wEl+hnQ3pVJ2GDYM6 D8K/SHavIdH7xg60pZO/vHblQB2uYce/k6A5kSvFunwdIf5E4StxS4veSpDLGBS8r8edaRkNbEo U4pBTOJdtjbCFeR2LAbdbah0fxtjkaHKugVDU/1x/qIjwjHStXeuP+KD3HiGsY+4RpWDoCD0kX6 /SbkD86YoRIaZUPCgPAccHzleJPZUkatZxO6qw96lTmQ6cuQ88HNR0= X-Google-Smtp-Source: AGHT+IG+2JCAWr723k4FWWJwukXrscmm5CXTiWpQmkUAWoh7WbKyrg+YkyiUDbqlQBFOKg/oZIh00Q== X-Received: by 2002:a05:6a21:6da4:b0:1e0:d4f4:5b2f with SMTP id adf61e73a8af0-1e5e07ffb0dmr94930455637.32.1736099064655; Sun, 05 Jan 2025 09:44:24 -0800 (PST) Received: from nuvole.. ([144.202.86.13]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-842abd5927fsm27375046a12.10.2025.01.05.09.44.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2025 09:44:23 -0800 (PST) From: Pengyu Luo To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Sebastian Reichel , Heikki Krogerus , Greg Kroah-Hartman , Jean Delvare , Guenter Roeck Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-hwmon@vger.kernel.org, Dmitry Baryshkov , Pengyu Luo Subject: [PATCH v2 2/5] platform: arm64: add Huawei Matebook E Go EC driver Date: Mon, 6 Jan 2025 01:41:56 +0800 Message-ID: <20250105174159.227831-3-mitltlatltl@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250105174159.227831-1-mitltlatltl@gmail.com> References: <20250105174159.227831-1-mitltlatltl@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There are three variants of which Huawei released the first two simultaneously. Huawei Matebook E Go LTE(sc8180x), codename seems to be gaokun2. Huawei Matebook E Go(sc8280xp@3.0GHz), codename must be gaokun3. (see [1]) Huawei Matebook E Go 2023(sc8280xp@2.69GHz), codename should be also gaokun3. Adding support for the latter two variants for now, this driver should also work for the sc8180x variant according to acpi table files, but I don't have the device to test yet. Different from other Qualcomm Snapdragon sc8280xp based machines, the Huawei Matebook E Go uses an embedded controller while others use a system called PMIC GLink. This embedded controller can be used to perform a set of various functions, including, but not limited to: - Battery and charger monitoring; - Charge control and smart charge; - Fn_lock settings; - Tablet lid status; - Temperature sensors; - USB Type-C notifications (ports orientation, DP alt mode HPD); - USB Type-C PD (according to observation, up to 48w). Add a driver for the EC which creates devices for UCSI and power supply devices. [1] https://bugzilla.kernel.org/show_bug.cgi?id=219645 Signed-off-by: Pengyu Luo --- MAINTAINERS | 9 + drivers/platform/arm64/Kconfig | 21 + drivers/platform/arm64/Makefile | 1 + drivers/platform/arm64/huawei-gaokun-ec.c | 767 ++++++++++++++++++ .../linux/platform_data/huawei-gaokun-ec.h | 79 ++ 5 files changed, 877 insertions(+) create mode 100644 drivers/platform/arm64/huawei-gaokun-ec.c create mode 100644 include/linux/platform_data/huawei-gaokun-ec.h diff --git a/MAINTAINERS b/MAINTAINERS index 85c8a68d1..04263ba32 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10595,6 +10595,15 @@ S: Maintained F: Documentation/networking/device_drivers/ethernet/huawei/hinic.rst F: drivers/net/ethernet/huawei/hinic/ +HUAWEI MATEBOOK E GO EMBEDDED CONTROLLER DRIVER +M: Pengyu Luo +S: Maintained +F: Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml +F: drivers/platform/arm64/huawei-gaokun-ec.c +F: drivers/power/supply/huawei-gaokun-battery.c +F: drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c +F: include/linux/platform_data/huawei-gaokun-ec.h + HUGETLB SUBSYSTEM M: Muchun Song L: linux-mm@kvack.org diff --git a/drivers/platform/arm64/Kconfig b/drivers/platform/arm64/Kconfig index f88395ea3..67dc7aa95 100644 --- a/drivers/platform/arm64/Kconfig +++ b/drivers/platform/arm64/Kconfig @@ -33,6 +33,27 @@ config EC_ACER_ASPIRE1 laptop where this information is not properly exposed via the standard ACPI devices. +config EC_HUAWEI_GAOKUN + tristate "Huawei Matebook E Go Embedded Controller driver" + depends on ARCH_QCOM || COMPILE_TEST + depends on I2C + depends on DRM + depends on POWER_SUPPLY + depends on INPUT + help + Say Y here to enable the EC driver for the Huawei Matebook E Go + which is a sc8280xp-based 2-in-1 tablet. The driver handles battery + (information, charge control) and USB Type-C DP HPD events as well + as some misc functions like the lid sensor and temperature sensors, + etc. + + This driver provides battery and AC status support for the mentioned + laptop where this information is not properly exposed via the + standard ACPI devices. + + Say M or Y here to include this support. + + config EC_LENOVO_YOGA_C630 tristate "Lenovo Yoga C630 Embedded Controller driver" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/platform/arm64/Makefile b/drivers/platform/arm64/Makefile index b2ae9114f..46a99eba3 100644 --- a/drivers/platform/arm64/Makefile +++ b/drivers/platform/arm64/Makefile @@ -6,4 +6,5 @@ # obj-$(CONFIG_EC_ACER_ASPIRE1) += acer-aspire1-ec.o +obj-$(CONFIG_EC_HUAWEI_GAOKUN) += huawei-gaokun-ec.o obj-$(CONFIG_EC_LENOVO_YOGA_C630) += lenovo-yoga-c630.o diff --git a/drivers/platform/arm64/huawei-gaokun-ec.c b/drivers/platform/arm64/huawei-gaokun-ec.c new file mode 100644 index 000000000..743885a3b --- /dev/null +++ b/drivers/platform/arm64/huawei-gaokun-ec.c @@ -0,0 +1,767 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * huawei-gaokun-ec - An EC driver for HUAWEI Matebook E Go + * + * reference: drivers/platform/arm64/acer-aspire1-ec.c + * drivers/platform/arm64/lenovo-yoga-c630.c + * drivers/platform/x86/huawei-wmi.c + * + * Copyright (C) 2024 Pengyu Luo + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define EC_EVENT 0x06 + +/* Also can be found in ACPI specification 12.3 */ +#define EC_READ 0x80 +#define EC_WRITE 0x81 +#define EC_BURST 0x82 +#define EC_QUERY 0x84 + +#define EC_FN_LOCK_ON 0x5A +#define EC_FN_LOCK_OFF 0x55 + +#define EC_EVENT_LID 0x81 + +#define EC_LID_STATE 0x80 +#define EC_LID_OPEN BIT(1) + +#define UCSI_REG_SIZE 7 + +/* + * for tx, command sequences are arranged as + * {master_cmd, slave_cmd, data_len, data_seq} + */ +#define REQ_HDR_SIZE 3 +#define INPUT_SIZE_OFFSET 2 +#define REQ_LEN(req) (REQ_HDR_SIZE + req[INPUT_SIZE_OFFSET]) + +/* + * for rx, data sequences are arranged as + * {status, data_len(unreliable), data_seq} + */ +#define RESP_HDR_SIZE 2 + +#define MKREQ(REG0, REG1, SIZE, ...) \ +{ \ + REG0, REG1, SIZE, \ + /* ## will remove comma when SIZE is 0 */ \ + ## __VA_ARGS__, \ + /* make sure len(pkt[3:]) >= SIZE */ \ + [3 + SIZE] = 0, \ +} + +#define MKRESP(SIZE) \ +{ \ + [RESP_HDR_SIZE + SIZE - 1] = 0, \ +} + +static inline void refill_req(u8 *dest, const u8 *src, size_t size) +{ + memcpy(dest + REQ_HDR_SIZE, src, size); +} + +static inline void extr_resp(u8 *dest, const u8 *src, size_t size) +{ + memcpy(dest, src + RESP_HDR_SIZE, size); +} + +struct gaokun_ec { + struct i2c_client *client; + struct mutex lock; /* EC transaction lock */ + struct blocking_notifier_head notifier_list; + struct device *hwmon_dev; + struct input_dev *idev; + bool suspended; +}; + +static int gaokun_ec_request(struct gaokun_ec *ec, const u8 *req, + size_t resp_len, u8 *resp) +{ + struct i2c_client *client = ec->client; + struct i2c_msg msgs[2] = { + { + .addr = client->addr, + .flags = client->flags, + .len = REQ_LEN(req), + .buf = req, + }, { + .addr = client->addr, + .flags = client->flags | I2C_M_RD, + .len = resp_len, + .buf = resp, + }, + }; + + mutex_lock(&ec->lock); + + i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + usleep_range(2000, 2500); /* have a break, acpi did this */ + + mutex_unlock(&ec->lock); + + return *resp; +} + +/* -------------------------------------------------------------------------- */ +/* Common API */ + +/** + * gaokun_ec_read - read from EC + * @ec: The gaokun_ec + * @req: The sequence to request + * @resp_len: The size to read + * @resp: Where the data are read to + * + * Return: 0 on success or negative error code. + * + * This function is used to read data after writing a magic sequence to EC. + * All EC operations depend on this function. + * + * Huawei uses magic sequences everywhere to complete various functions, all + * these sequences are passed to ECCD(a ACPI method which is quiet similar + * to gaokun_ec_request), there is no good abstraction to generalize these + * sequences, so just wrap it for now. Almost all magic sequences are kept + * in this file. + */ +int gaokun_ec_read(struct gaokun_ec *ec, const u8 *req, + size_t resp_len, u8 *resp) +{ + return gaokun_ec_request(ec, req, resp_len, resp); +} +EXPORT_SYMBOL_GPL(gaokun_ec_read); + +/** + * gaokun_ec_write - write to EC + * @ec: The gaokun_ec + * @req: The sequence to request + * + * Return: 0 on success or negative error code. + * + * This function has no big difference from gaokun_ec_read. When caller care + * only write status and no actual data are returned, then use it. + */ +int gaokun_ec_write(struct gaokun_ec *ec, u8 *req) +{ + u8 resp[] = MKRESP(0); + + return gaokun_ec_request(ec, req, sizeof(resp), resp); +} +EXPORT_SYMBOL_GPL(gaokun_ec_write); + +int gaokun_ec_read_byte(struct gaokun_ec *ec, u8 *req, u8 *byte) +{ + int ret; + u8 resp[] = MKRESP(sizeof(*byte)); + + ret = gaokun_ec_read(ec, req, sizeof(resp), resp); + extr_resp(byte, resp, sizeof(*byte)); + + return ret; +} +EXPORT_SYMBOL_GPL(gaokun_ec_read_byte); + +/** + * gaokun_ec_register_notify - Register a notifier callback for EC events. + * @ec: The gaokun_ec + * @nb: Notifier block pointer to register + * + * Return: 0 on success or negative error code. + */ +int gaokun_ec_register_notify(struct gaokun_ec *ec, struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&ec->notifier_list, nb); +} +EXPORT_SYMBOL_GPL(gaokun_ec_register_notify); + +/** + * gaokun_ec_unregister_notify - Unregister notifier callback for EC events. + * @ec: The gaokun_ec + * @nb: Notifier block pointer to unregister + * + * Unregister a notifier callback that was previously registered with + * gaokun_ec_register_notify(). + */ +void gaokun_ec_unregister_notify(struct gaokun_ec *ec, struct notifier_block *nb) +{ + blocking_notifier_chain_unregister(&ec->notifier_list, nb); +} +EXPORT_SYMBOL_GPL(gaokun_ec_unregister_notify); + +/* -------------------------------------------------------------------------- */ +/* API For PSY */ + +int gaokun_ec_psy_multi_read(struct gaokun_ec *ec, u8 reg, + size_t resp_len, u8 *resp) +{ + int i, ret; + u8 _resp[] = MKRESP(1); + u8 req[] = MKREQ(0x02, EC_READ, 1, 0); + + for (i = 0; i < resp_len; ++i, reg++) { + refill_req(req, ®, 1); + ret = gaokun_ec_read(ec, req, sizeof(_resp), _resp); + if (ret) + return ret; + extr_resp(&resp[i], _resp, 1); + } + + return 0; +} +EXPORT_SYMBOL_GPL(gaokun_ec_psy_multi_read); + +/* Smart charge */ +#define are_thresholds_valid(start, end) ((end != 0) && (start <= end) && (end <= 100)) +int gaokun_ec_psy_get_smart_charge(struct gaokun_ec *ec, + u8 data[GAOKUN_SMART_CHARGE_DATA_SIZE]) +{ + /* GBCM */ + u8 req[] = MKREQ(0x02, 0xE4, 0); + u8 resp[] = MKRESP(GAOKUN_SMART_CHARGE_DATA_SIZE); + int ret; + + ret = gaokun_ec_read(ec, req, sizeof(resp), resp); + if (ret) + return -EIO; + + extr_resp(data, resp, GAOKUN_SMART_CHARGE_DATA_SIZE); + + return 0; +} +EXPORT_SYMBOL_GPL(gaokun_ec_psy_get_smart_charge); + +int gaokun_ec_psy_set_smart_charge(struct gaokun_ec *ec, + u8 data[GAOKUN_SMART_CHARGE_DATA_SIZE]) +{ + /* SBCM */ + u8 req[] = MKREQ(0x02, 0XE3, GAOKUN_SMART_CHARGE_DATA_SIZE); + + if (!are_thresholds_valid(data[2], data[3])) + return -EINVAL; + + refill_req(req, data, GAOKUN_SMART_CHARGE_DATA_SIZE); + + return gaokun_ec_write(ec, req); +} +EXPORT_SYMBOL_GPL(gaokun_ec_psy_set_smart_charge); + +/* Smart charge enable */ +int gaokun_ec_psy_get_smart_charge_enable(struct gaokun_ec *ec, bool *on) +{ + /* GBAC */ + *on = 0; /* clear other 3 Bytes */ + return gaokun_ec_read_byte(ec, (u8 [])MKREQ(0x02, 0xE6, 0), (u8 *)on); +} +EXPORT_SYMBOL_GPL(gaokun_ec_psy_get_smart_charge_enable); + +int gaokun_ec_psy_set_smart_charge_enable(struct gaokun_ec *ec, bool on) +{ + /* SBAC */ + return gaokun_ec_write(ec, (u8 [])MKREQ(0x02, 0xE5, 1, on)); +} +EXPORT_SYMBOL_GPL(gaokun_ec_psy_set_smart_charge_enable); + +/* -------------------------------------------------------------------------- */ +/* API For UCSI */ + +int gaokun_ec_ucsi_read(struct gaokun_ec *ec, + u8 resp[GAOKUN_UCSI_READ_SIZE]) +{ + u8 req[] = MKREQ(0x03, 0xD5, 0); + u8 _resp[] = MKRESP(GAOKUN_UCSI_READ_SIZE); + int ret; + + ret = gaokun_ec_read(ec, req, sizeof(_resp), _resp); + if (ret) + return ret; + + extr_resp(resp, _resp, GAOKUN_UCSI_READ_SIZE); + return 0; +} +EXPORT_SYMBOL_GPL(gaokun_ec_ucsi_read); + +int gaokun_ec_ucsi_write(struct gaokun_ec *ec, + const u8 req[GAOKUN_UCSI_WRITE_SIZE]) +{ + u8 _req[] = MKREQ(0x03, 0xD4, GAOKUN_UCSI_WRITE_SIZE); + + + refill_req(_req, req, GAOKUN_UCSI_WRITE_SIZE); + + return gaokun_ec_write(ec, _req); +} +EXPORT_SYMBOL_GPL(gaokun_ec_ucsi_write); + +int gaokun_ec_ucsi_get_reg(struct gaokun_ec *ec, u8 *ureg) +{ + u8 req[] = MKREQ(0x03, 0xD3, 0); + u8 _resp[] = MKRESP(UCSI_REG_SIZE); + int ret; + + ret = gaokun_ec_read(ec, req, sizeof(_resp), _resp); + if (ret) + return ret; + + extr_resp(ureg, _resp, UCSI_REG_SIZE); + + return 0; +} +EXPORT_SYMBOL_GPL(gaokun_ec_ucsi_get_reg); + +int gaokun_ec_ucsi_pan_ack(struct gaokun_ec *ec, int port_id) +{ + u8 req[] = MKREQ(0x03, 0xD2, 1); + u8 data = 1 << port_id; + + if (port_id == GAOKUN_UCSI_NO_PORT_UPDATE) + data = 0; + + refill_req(req, &data, 1); + + return gaokun_ec_write(ec, req); +} +EXPORT_SYMBOL_GPL(gaokun_ec_ucsi_pan_ack); + +/* -------------------------------------------------------------------------- */ +/* EC Sysfs */ + +/* Fn lock */ +static int gaokun_ec_get_fn_lock(struct gaokun_ec *ec, bool *on) +{ + /* GFRS */ + u8 req[] = MKREQ(0x02, 0x6B, 0); + int ret; + u8 val; + + ret = gaokun_ec_read_byte(ec, req, &val); + if (ret) + return ret; + + if (val == EC_FN_LOCK_ON) + *on = true; + else if (val == EC_FN_LOCK_OFF) + *on = false; + else + return -EIO; + + return 0; +} + +static int gaokun_ec_set_fn_lock(struct gaokun_ec *ec, bool on) +{ + /* SFRS */ + u8 req[] = MKREQ(0x02, 0x6C, 1); + u8 data; + + if (on) + data = EC_FN_LOCK_ON; + else + data = EC_FN_LOCK_OFF; + + refill_req(req, &data, 1); + + return gaokun_ec_write(ec, req); +} + +static ssize_t fn_lock_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct gaokun_ec *ec = dev_get_drvdata(dev); + bool on; + int ret; + + ret = gaokun_ec_get_fn_lock(ec, &on); + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", on); +} + +static ssize_t fn_lock_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct gaokun_ec *ec = dev_get_drvdata(dev); + bool on; + int ret; + + if (kstrtobool(buf, &on)) + return -EINVAL; + + ret = gaokun_ec_set_fn_lock(ec, on); + if (ret) + return ret; + + return size; +} + +static DEVICE_ATTR_RW(fn_lock); + +static struct attribute *gaokun_ec_attrs[] = { + &dev_attr_fn_lock.attr, + NULL, +}; +ATTRIBUTE_GROUPS(gaokun_ec); + +/* Thermal Zone HwMon */ +/* Range from 0 to 0x2C, partial valid */ +static const u8 temp_reg[20] = {0x05, 0x07, 0x08, 0x0E, 0x0F, 0x12, 0x15, 0x1E, + 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, + 0x27, 0x28, 0x29, 0x2A}; + +static int gaokun_ec_get_temp(struct gaokun_ec *ec, u8 idx, int *temp) +{ + /* GTMP */ + u8 req[] = MKREQ(0x02, 0x61, 1, temp_reg[idx]); + u8 resp[] = MKRESP(sizeof(__le16)); + __le16 tmp; + int ret; + + ret = gaokun_ec_read(ec, req, sizeof(resp), resp); + if (ret) + return ret; + + extr_resp((u8 *)&tmp, resp, sizeof(tmp)); + *temp = le16_to_cpu(tmp) * 100; /* convert to HwMon's unit */ + + return 0; +} + +static ssize_t get_ec_tz_temp(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct gaokun_ec *ec = dev_get_drvdata(dev); + int idx, ret, temp; + + idx = (to_sensor_dev_attr(attr))->index - 1; + ret = gaokun_ec_get_temp(ec, idx, &temp); + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", temp); +} + +static ssize_t ec_tz_temp_label(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int idx = (to_sensor_dev_attr(attr))->index - 1; + + return sysfs_emit(buf, "EC Thermal Zone %2d Temperature\n", idx); +} + +static SENSOR_DEVICE_ATTR(temp1_input, 0444, get_ec_tz_temp, NULL, 1); +static SENSOR_DEVICE_ATTR(temp1_label, 0444, ec_tz_temp_label, NULL, 1); +static SENSOR_DEVICE_ATTR(temp2_input, 0444, get_ec_tz_temp, NULL, 2); +static SENSOR_DEVICE_ATTR(temp2_label, 0444, ec_tz_temp_label, NULL, 2); +static SENSOR_DEVICE_ATTR(temp3_input, 0444, get_ec_tz_temp, NULL, 3); +static SENSOR_DEVICE_ATTR(temp3_label, 0444, ec_tz_temp_label, NULL, 3); +static SENSOR_DEVICE_ATTR(temp4_input, 0444, get_ec_tz_temp, NULL, 4); +static SENSOR_DEVICE_ATTR(temp4_label, 0444, ec_tz_temp_label, NULL, 4); +static SENSOR_DEVICE_ATTR(temp5_input, 0444, get_ec_tz_temp, NULL, 5); +static SENSOR_DEVICE_ATTR(temp5_label, 0444, ec_tz_temp_label, NULL, 5); +static SENSOR_DEVICE_ATTR(temp6_input, 0444, get_ec_tz_temp, NULL, 6); +static SENSOR_DEVICE_ATTR(temp6_label, 0444, ec_tz_temp_label, NULL, 6); +static SENSOR_DEVICE_ATTR(temp7_input, 0444, get_ec_tz_temp, NULL, 7); +static SENSOR_DEVICE_ATTR(temp7_label, 0444, ec_tz_temp_label, NULL, 7); +static SENSOR_DEVICE_ATTR(temp8_input, 0444, get_ec_tz_temp, NULL, 8); +static SENSOR_DEVICE_ATTR(temp8_label, 0444, ec_tz_temp_label, NULL, 8); +static SENSOR_DEVICE_ATTR(temp9_input, 0444, get_ec_tz_temp, NULL, 9); +static SENSOR_DEVICE_ATTR(temp9_label, 0444, ec_tz_temp_label, NULL, 9); +static SENSOR_DEVICE_ATTR(temp10_input, 0444, get_ec_tz_temp, NULL, 10); +static SENSOR_DEVICE_ATTR(temp10_label, 0444, ec_tz_temp_label, NULL, 10); +static SENSOR_DEVICE_ATTR(temp11_input, 0444, get_ec_tz_temp, NULL, 11); +static SENSOR_DEVICE_ATTR(temp11_label, 0444, ec_tz_temp_label, NULL, 11); +static SENSOR_DEVICE_ATTR(temp12_input, 0444, get_ec_tz_temp, NULL, 12); +static SENSOR_DEVICE_ATTR(temp12_label, 0444, ec_tz_temp_label, NULL, 12); +static SENSOR_DEVICE_ATTR(temp13_input, 0444, get_ec_tz_temp, NULL, 13); +static SENSOR_DEVICE_ATTR(temp13_label, 0444, ec_tz_temp_label, NULL, 13); +static SENSOR_DEVICE_ATTR(temp14_input, 0444, get_ec_tz_temp, NULL, 14); +static SENSOR_DEVICE_ATTR(temp14_label, 0444, ec_tz_temp_label, NULL, 14); +static SENSOR_DEVICE_ATTR(temp15_input, 0444, get_ec_tz_temp, NULL, 15); +static SENSOR_DEVICE_ATTR(temp15_label, 0444, ec_tz_temp_label, NULL, 15); +static SENSOR_DEVICE_ATTR(temp16_input, 0444, get_ec_tz_temp, NULL, 16); +static SENSOR_DEVICE_ATTR(temp16_label, 0444, ec_tz_temp_label, NULL, 16); +static SENSOR_DEVICE_ATTR(temp17_input, 0444, get_ec_tz_temp, NULL, 17); +static SENSOR_DEVICE_ATTR(temp17_label, 0444, ec_tz_temp_label, NULL, 17); +static SENSOR_DEVICE_ATTR(temp18_input, 0444, get_ec_tz_temp, NULL, 18); +static SENSOR_DEVICE_ATTR(temp18_label, 0444, ec_tz_temp_label, NULL, 18); +static SENSOR_DEVICE_ATTR(temp19_input, 0444, get_ec_tz_temp, NULL, 19); +static SENSOR_DEVICE_ATTR(temp19_label, 0444, ec_tz_temp_label, NULL, 19); +static SENSOR_DEVICE_ATTR(temp20_input, 0444, get_ec_tz_temp, NULL, 20); +static SENSOR_DEVICE_ATTR(temp20_label, 0444, ec_tz_temp_label, NULL, 20); + +static struct attribute *gaokun_ec_hwmon_attrs[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_label.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_label.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_label.dev_attr.attr, + &sensor_dev_attr_temp4_input.dev_attr.attr, + &sensor_dev_attr_temp4_label.dev_attr.attr, + &sensor_dev_attr_temp5_input.dev_attr.attr, + &sensor_dev_attr_temp5_label.dev_attr.attr, + &sensor_dev_attr_temp6_input.dev_attr.attr, + &sensor_dev_attr_temp6_label.dev_attr.attr, + &sensor_dev_attr_temp7_input.dev_attr.attr, + &sensor_dev_attr_temp7_label.dev_attr.attr, + &sensor_dev_attr_temp8_input.dev_attr.attr, + &sensor_dev_attr_temp8_label.dev_attr.attr, + &sensor_dev_attr_temp9_input.dev_attr.attr, + &sensor_dev_attr_temp9_label.dev_attr.attr, + &sensor_dev_attr_temp10_input.dev_attr.attr, + &sensor_dev_attr_temp10_label.dev_attr.attr, + &sensor_dev_attr_temp11_input.dev_attr.attr, + &sensor_dev_attr_temp11_label.dev_attr.attr, + &sensor_dev_attr_temp12_input.dev_attr.attr, + &sensor_dev_attr_temp12_label.dev_attr.attr, + &sensor_dev_attr_temp13_input.dev_attr.attr, + &sensor_dev_attr_temp13_label.dev_attr.attr, + &sensor_dev_attr_temp14_input.dev_attr.attr, + &sensor_dev_attr_temp14_label.dev_attr.attr, + &sensor_dev_attr_temp15_input.dev_attr.attr, + &sensor_dev_attr_temp15_label.dev_attr.attr, + &sensor_dev_attr_temp16_input.dev_attr.attr, + &sensor_dev_attr_temp16_label.dev_attr.attr, + &sensor_dev_attr_temp17_input.dev_attr.attr, + &sensor_dev_attr_temp17_label.dev_attr.attr, + &sensor_dev_attr_temp18_input.dev_attr.attr, + &sensor_dev_attr_temp18_label.dev_attr.attr, + &sensor_dev_attr_temp19_input.dev_attr.attr, + &sensor_dev_attr_temp19_label.dev_attr.attr, + &sensor_dev_attr_temp20_input.dev_attr.attr, + &sensor_dev_attr_temp20_label.dev_attr.attr, + NULL +}; +ATTRIBUTE_GROUPS(gaokun_ec_hwmon); + +/* -------------------------------------------------------------------------- */ +/* Modern Standby */ + +static int gaokun_ec_suspend(struct device *dev) +{ + struct gaokun_ec *ec = dev_get_drvdata(dev); + u8 req[] = MKREQ(0x02, 0xB2, 1, 0xDB); + int ret; + + if (ec->suspended) + return 0; + + ret = gaokun_ec_write(ec, req); + + if (ret) + return ret; + + ec->suspended = true; + + return 0; +} + +static int gaokun_ec_resume(struct device *dev) +{ + struct gaokun_ec *ec = dev_get_drvdata(dev); + u8 req[] = MKREQ(0x02, 0xB2, 1, 0xEB); + int ret; + int i; + + if (!ec->suspended) + return 0; + + for (i = 0; i < 3; ++i) { + ret = gaokun_ec_write(ec, req); + if (ret == 0) + break; + + msleep(100); /* EC need time to resume */ + }; + + ec->suspended = false; + + return 0; +} + +static void gaokun_aux_release(struct device *dev) +{ + struct auxiliary_device *adev = to_auxiliary_dev(dev); + + kfree(adev); +} + +static void gaokun_aux_remove(void *data) +{ + struct auxiliary_device *adev = data; + + auxiliary_device_delete(adev); + auxiliary_device_uninit(adev); +} + +static int gaokun_aux_init(struct device *parent, const char *name, + struct gaokun_ec *ec) +{ + struct auxiliary_device *adev; + int ret; + + adev = kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + + adev->name = name; + adev->id = 0; + adev->dev.parent = parent; + adev->dev.release = gaokun_aux_release; + adev->dev.platform_data = ec; + /* Allow aux devices to access parent's DT nodes directly */ + device_set_of_node_from_dev(&adev->dev, parent); + + ret = auxiliary_device_init(adev); + if (ret) { + kfree(adev); + return ret; + } + + ret = auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(parent, gaokun_aux_remove, adev); +} + +/* -------------------------------------------------------------------------- */ +/* EC */ + +static irqreturn_t gaokun_ec_irq_handler(int irq, void *data) +{ + struct gaokun_ec *ec = data; + u8 req[] = MKREQ(EC_EVENT, EC_QUERY, 0); + u8 status, id; + int ret; + + ret = gaokun_ec_read_byte(ec, req, &id); + if (ret) + return IRQ_HANDLED; + + switch (id) { + case 0x0: /* No event */ + break; + + case EC_EVENT_LID: + gaokun_ec_psy_read_byte(ec, EC_LID_STATE, &status); + status = EC_LID_OPEN & status; + input_report_switch(ec->idev, SW_LID, !status); + input_sync(ec->idev); + break; + + default: + blocking_notifier_call_chain(&ec->notifier_list, id, ec); + } + + return IRQ_HANDLED; +} + +static int gaokun_ec_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct gaokun_ec *ec; + int ret; + + ec = devm_kzalloc(dev, sizeof(*ec), GFP_KERNEL); + if (!ec) + return -ENOMEM; + + mutex_init(&ec->lock); + ec->client = client; + i2c_set_clientdata(client, ec); + BLOCKING_INIT_NOTIFIER_HEAD(&ec->notifier_list); + + /* Lid switch */ + ec->idev = devm_input_allocate_device(dev); + if (!ec->idev) + return -ENOMEM; + + ec->idev->name = "LID"; + ec->idev->phys = "gaokun-ec/input0"; + input_set_capability(ec->idev, EV_SW, SW_LID); + + ret = input_register_device(ec->idev); + if (ret) + return dev_err_probe(dev, ret, "Failed to register input device\n"); + + ret = gaokun_aux_init(dev, "psy", ec); + if (ret) + return ret; + + ret = gaokun_aux_init(dev, "ucsi", ec); + if (ret) + return ret; + + ret = devm_request_threaded_irq(dev, client->irq, NULL, + gaokun_ec_irq_handler, IRQF_ONESHOT, + dev_name(dev), ec); + if (ret) + return dev_err_probe(dev, ret, "Failed to request irq\n"); + + ec->hwmon_dev = hwmon_device_register_with_groups(dev, "gaokun_ec_hwmon", + ec, gaokun_ec_hwmon_groups); + if (IS_ERR(ec->hwmon_dev)) { + dev_err(dev, "Failed to register hwmon device\n"); + return PTR_ERR(ec->hwmon_dev); + } + + return 0; +} + +static void gaokun_ec_remove(struct i2c_client *client) +{ + struct gaokun_ec *ec = i2c_get_clientdata(client); + hwmon_device_unregister(ec->hwmon_dev); +} + +static const struct i2c_device_id gaokun_ec_id[] = { + { "gaokun-ec", }, + { } +}; +MODULE_DEVICE_TABLE(i2c, gaokun_ec_id); + +static const struct of_device_id gaokun_ec_of_match[] = { + { .compatible = "huawei,gaokun-ec", }, + { } +}; +MODULE_DEVICE_TABLE(of, gaokun_ec_of_match); + +static const struct dev_pm_ops gaokun_ec_pm_ops = { + NOIRQ_SYSTEM_SLEEP_PM_OPS(gaokun_ec_suspend, gaokun_ec_resume) +}; + +static struct i2c_driver gaokun_ec_driver = { + .driver = { + .name = "gaokun-ec", + .of_match_table = gaokun_ec_of_match, + .pm = &gaokun_ec_pm_ops, + .dev_groups = gaokun_ec_groups, + }, + .probe = gaokun_ec_probe, + .remove = gaokun_ec_remove, + .id_table = gaokun_ec_id, +}; +module_i2c_driver(gaokun_ec_driver); + +MODULE_DESCRIPTION("HUAWEI Matebook E Go EC driver"); +MODULE_AUTHOR("Pengyu Luo "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/platform_data/huawei-gaokun-ec.h b/include/linux/platform_data/huawei-gaokun-ec.h new file mode 100644 index 000000000..7a8d17391 --- /dev/null +++ b/include/linux/platform_data/huawei-gaokun-ec.h @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Huawei Matebook E Go Embedded Controller + * + * Copyright (C) 2024 Pengyu Luo + */ + +#ifndef __HUAWEI_GAOKUN_EC_H__ +#define __HUAWEI_GAOKUN_EC_H__ + +#define GAOKUN_UCSI_CCI_SIZE 4 +#define GAOKUN_UCSI_DATA_SIZE 16 +#define GAOKUN_UCSI_READ_SIZE (GAOKUN_UCSI_CCI_SIZE + GAOKUN_UCSI_DATA_SIZE) +#define GAOKUN_UCSI_WRITE_SIZE 0x18 + +#define GAOKUN_UCSI_NO_PORT_UPDATE (-1) + +#define GAOKUN_SMART_CHARGE_DATA_SIZE 4 /* mode, delay, start, end */ + +/* -------------------------------------------------------------------------- */ + +struct gaokun_ec; +struct notifier_block; + +#define GAOKUN_MOD_NAME "huawei_gaokun_ec" +#define GAOKUN_DEV_PSY "psy" +#define GAOKUN_DEV_UCSI "ucsi" + +/* -------------------------------------------------------------------------- */ +/* Common API */ + +int gaokun_ec_register_notify(struct gaokun_ec *ec, + struct notifier_block *nb); +void gaokun_ec_unregister_notify(struct gaokun_ec *ec, + struct notifier_block *nb); + +int gaokun_ec_read(struct gaokun_ec *ec, const u8 *req, + size_t resp_len, u8 *resp); +int gaokun_ec_write(struct gaokun_ec *ec, u8 *req); +int gaokun_ec_read_byte(struct gaokun_ec *ec, u8 *req, u8 *byte); + +/* -------------------------------------------------------------------------- */ +/* API For PSY */ + +int gaokun_ec_psy_multi_read(struct gaokun_ec *ec, u8 reg, + size_t resp_len, u8 *resp); + +static inline int gaokun_ec_psy_read_byte(struct gaokun_ec *ec, + u8 reg, u8 *byte) +{ + return gaokun_ec_psy_multi_read(ec, reg, sizeof(*byte), byte); +} + +static inline int gaokun_ec_psy_read_word(struct gaokun_ec *ec, + u8 reg, u16 *word) +{ + return gaokun_ec_psy_multi_read(ec, reg, sizeof(*word), (u8 *)word); +} + +int gaokun_ec_psy_get_smart_charge(struct gaokun_ec *ec, + u8 data[GAOKUN_SMART_CHARGE_DATA_SIZE]); +int gaokun_ec_psy_set_smart_charge(struct gaokun_ec *ec, + u8 data[GAOKUN_SMART_CHARGE_DATA_SIZE]); + +int gaokun_ec_psy_get_smart_charge_enable(struct gaokun_ec *ec, bool *on); +int gaokun_ec_psy_set_smart_charge_enable(struct gaokun_ec *ec, bool on); + +/* -------------------------------------------------------------------------- */ +/* API For UCSI */ + +int gaokun_ec_ucsi_read(struct gaokun_ec *ec, u8 resp[GAOKUN_UCSI_READ_SIZE]); +int gaokun_ec_ucsi_write(struct gaokun_ec *ec, + const u8 req[GAOKUN_UCSI_WRITE_SIZE]); + +int gaokun_ec_ucsi_get_reg(struct gaokun_ec *ec, u8 *ureg); +int gaokun_ec_ucsi_pan_ack(struct gaokun_ec *ec, int port_id); + + +#endif /* __HUAWEI_GAOKUN_EC_H__ */ From patchwork Sun Jan 5 17:41:57 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pengyu Luo X-Patchwork-Id: 855364 Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) (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 4CDEF1C0DED; Sun, 5 Jan 2025 17:44:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099082; cv=none; b=UlqsM/eErlOMkQ25tMN58Uzc8n0F5Fg+2N9gfTr7/TuuAi1y6uueUzTHqwJksdUQhx2vBVn/aupABcF+MqtQzo+d0h8bZxedq9P5g20MmR3oKF4oewjZoZPcDzvLQgY/PmRWeGREq8wM1K+5eRAaXPebg1d6NNdQ8cVK/oLicT0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099082; c=relaxed/simple; bh=D5IlMtAl+uTkkx/UIKc3WY2G0+8X7xX8G8TaPY6+f6w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q6oUG4AD7mpEiWhN3PUvYFvRbNz6LT/HOI+qKqm5au39jr+IfJ7IuS8jJFa6RxJySGEFTTKjJJWkqHxb2g8v0p2Lq1RbTltak7GqbIUDEPKwMQxpIQRPEJn30ZQtgZuAy4M0iblQ+gIRPBFApePFkG3qEsHHR+BLFbpSygYwufA= 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=FiIaQTq0; arc=none smtp.client-ip=209.85.214.169 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="FiIaQTq0" Received: by mail-pl1-f169.google.com with SMTP id d9443c01a7336-216728b1836so174373945ad.0; Sun, 05 Jan 2025 09:44:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736099079; x=1736703879; 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=3d0jF7kNZrSFFba9MWDdQNjjLx4MP93BazBprG+7xJg=; b=FiIaQTq0TVv5UUZ/HGNVg0nVnJQXaKW2B5xGa6TPLTZBcXzQA8DVESw6ZFscSAR2kj Fva3QPkWMfpFbACsdpq5FEWC2qduEOCi8kA6gUbhfvrBKOKcavXrnNFBJbUZ2wTPDwlT 9wGb1zDimgFNLeCJO8c66nqFqVI4YOwZJgUlDlbhVu3cdcCFGiKooY3KUYXXpv6N/50t V+UZg/qhivz2Dhf1qf237KUJx2EA+L3oJzPwepk1SVh1ARc2UpPXbVEJwytskmYrTeW4 2ggbMFxv/a/8GVOjaRV1zYZyqGot9mVQs2lMPffltZI1+WUh9cxdUuVk6NoIElizQy3v 2x1A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736099079; x=1736703879; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3d0jF7kNZrSFFba9MWDdQNjjLx4MP93BazBprG+7xJg=; b=h3gErzaj6RFftskuj1s1jLqcUlJ7h8lleg1MCxt8IUenxAyNOWlWkebr0XPXW5YWQt LfGcG2KZISzPfXFdGHWvmQLMA5h7w80PS8iNcLnvQ5pQvI3HM2eMAhZt6CQ0CgC0oESq PAOAP3ls1bcnHV/85y/KIeRauB+NeDmd0uKQSmk8uZZYxf5Hf8xNa5b1RS9d0SiljgZr a8Z1KeSYy5nz1UD98TaocVOamYmUl1gM75ArcP2CY7MCezH9nvYV6Wmp1fLfARSJHN6D 1Zx6u4p0zZXPgwCIbL72C1hbZmp7OLz/U8VciCb2cmx5QA0gCoYeKh6sifvNDZj0C/q9 +SvQ== X-Forwarded-Encrypted: i=1; AJvYcCUfMylNldcUJCVaZYvjVxjD/f3U15gdG0X5aESNr2dhqi03aPM3WmYrOSZYE6YffefQInxd/KPpSEibXIZ4@vger.kernel.org, AJvYcCUrRMLcmLviwOKkJDzJexnRMLdtJFHIcgLEgIZrQ+gDsNNhBBEMxAFiiYpU9RfEAvx0ax3Tcl3SlobB@vger.kernel.org, AJvYcCVgLdWKTI+DKIVd2bYMSiV/kAelnxjFzcc8qS5qTFOAbushf/tVAeE3LK0n9VNYh6YbAwucVpw12lQ=@vger.kernel.org, AJvYcCX3iAy0VjjmcZrz++HfQJ3ihZLl6+fiJapX7Z/UCKfe3nTjCev+R+r6MwPkvRDTGNGe/HqFVdynSoDw39sHuqd1870dog==@vger.kernel.org, AJvYcCXdO1mSOw89qWLu0F/6ZMDVDhERGkZZJJLR0k/JWXZJ3cyNb0d3PBOUAPob7kRS7e+Hprdkc/kcOnlw5og=@vger.kernel.org, AJvYcCXgs2NwxX7oalWB0g3VBYj/AzyDx+DYrgV2zf9GdxB7Y74AC+vV6GtzFB+Xj5MBToeOtOc3uSP72gzb4ylf@vger.kernel.org X-Gm-Message-State: AOJu0Yx7EYRw+FWG7WW56I65qMMcdREHV0AYtLsURWOw9Yq+/5ZtRzNM GBGf/EwRMm63nZ8Cv40QXvws+rA44LvdgZOLvsiZqbydaP0W88Y9 X-Gm-Gg: ASbGncvu/bGZb+KICS2+VyTC+tUMWs9r24c/EcMGr2X2b06wlzw/6qEGt5gIziGOHvW Crnh7SMyEyOWnzUdCZNMTJeXZB1xIV8fIV+YddbGvJ8YsVT9eUqa4cEo08bmul/vSvIxfN70ZrZ PpNH/laWhi/Y5Mw56Rr0DS8DH3/fMKxP64dg1ImT7QD0o1rY8/tbcMP7iOkzSzTO6EiwlFaX/Hm eDn20TPACrL9UPmC7FHPGvfPUHq/jChLUy7q+sqo23XnVcVeF7+L9M= X-Google-Smtp-Source: AGHT+IFhM4H+33xSsvYkhW92V2AuBbuHnXONZyxIVy6w65xEXqkkQV+s2rc8boow5qq5ZPwfsij3gQ== X-Received: by 2002:a05:6a00:acc:b0:72a:bb83:7804 with SMTP id d2e1a72fcca58-72abde81bf6mr81637286b3a.17.1736099079345; Sun, 05 Jan 2025 09:44:39 -0800 (PST) Received: from nuvole.. ([144.202.86.13]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-842abd5927fsm27375046a12.10.2025.01.05.09.44.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2025 09:44:38 -0800 (PST) From: Pengyu Luo To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Sebastian Reichel , Heikki Krogerus , Greg Kroah-Hartman , Jean Delvare , Guenter Roeck Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-hwmon@vger.kernel.org, Dmitry Baryshkov , Pengyu Luo Subject: [PATCH v2 3/5] usb: typec: ucsi: add Huawei Matebook E Go ucsi driver Date: Mon, 6 Jan 2025 01:41:57 +0800 Message-ID: <20250105174159.227831-4-mitltlatltl@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250105174159.227831-1-mitltlatltl@gmail.com> References: <20250105174159.227831-1-mitltlatltl@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The Huawei Matebook E Go tablet implements the UCSI interface in the onboard EC. Add the glue driver to interface with the platform's UCSI implementation. Signed-off-by: Pengyu Luo --- drivers/usb/typec/ucsi/Kconfig | 10 + drivers/usb/typec/ucsi/Makefile | 1 + drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c | 524 ++++++++++++++++++++ 3 files changed, 535 insertions(+) create mode 100644 drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c diff --git a/drivers/usb/typec/ucsi/Kconfig b/drivers/usb/typec/ucsi/Kconfig index 680e1b87b..8a73df84a 100644 --- a/drivers/usb/typec/ucsi/Kconfig +++ b/drivers/usb/typec/ucsi/Kconfig @@ -78,4 +78,14 @@ config UCSI_LENOVO_YOGA_C630 To compile the driver as a module, choose M here: the module will be called ucsi_yoga_c630. +config UCSI_HUAWEI_GAOKUN + tristate "UCSI Interface Driver for Huawei Matebook E Go" + depends on EC_HUAWEI_GAOKUN + help + This driver enables UCSI support on the Huawei Matebook E Go tablet, + which is a sc8280xp-based 2-in-1 tablet. + + To compile the driver as a module, choose M here: the module will be + called ucsi_huawei_gaokun. + endif diff --git a/drivers/usb/typec/ucsi/Makefile b/drivers/usb/typec/ucsi/Makefile index aed41d238..0b400122b 100644 --- a/drivers/usb/typec/ucsi/Makefile +++ b/drivers/usb/typec/ucsi/Makefile @@ -22,3 +22,4 @@ obj-$(CONFIG_UCSI_CCG) += ucsi_ccg.o obj-$(CONFIG_UCSI_STM32G0) += ucsi_stm32g0.o obj-$(CONFIG_UCSI_PMIC_GLINK) += ucsi_glink.o obj-$(CONFIG_UCSI_LENOVO_YOGA_C630) += ucsi_yoga_c630.o +obj-$(CONFIG_UCSI_HUAWEI_GAOKUN) += ucsi_huawei_gaokun.o diff --git a/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c b/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c new file mode 100644 index 000000000..044545b44 --- /dev/null +++ b/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c @@ -0,0 +1,524 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ucsi-huawei-gaokun - A UCSI driver for HUAWEI Matebook E Go + * + * reference: drivers/usb/typec/ucsi/ucsi_yoga_c630.c + * drivers/usb/typec/ucsi/ucsi_glink.c + * drivers/soc/qcom/pmic_glink_altmode.c + * + * Copyright (C) 2024 Pengyu Luo + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ucsi.h" + +#define EC_EVENT_UCSI 0x21 +#define EC_EVENT_USB 0x22 + +#define GAOKUN_CCX_MASK GENMASK(1, 0) +#define GAOKUN_MUX_MASK GENMASK(3, 2) + +#define GAOKUN_DPAM_MASK GENMASK(3, 0) +#define GAOKUN_HPD_STATE_MASK BIT(4) +#define GAOKUN_HPD_IRQ_MASK BIT(5) + +#define GET_IDX(updt) (ffs(updt) - 1) + +#define CCX_TO_ORI(ccx) (++ccx % 3) /* convert ccx to enum typec_orientation */ + +/* Configuration Channel Extension */ +enum gaokun_ucsi_ccx { + USBC_CCX_NORMAL, + USBC_CCX_REVERSE, + USBC_CCX_NONE, +}; + +enum gaokun_ucsi_mux { + USBC_MUX_NONE, + USBC_MUX_USB_2L, + USBC_MUX_DP_4L, + USBC_MUX_USB_DP, +}; +/* based on pmic_glink_altmode_pin_assignment */ +enum gaokun_ucsi_dpam_pan { /* DP Alt Mode Pin Assignments */ + USBC_DPAM_PAN_NONE, + USBC_DPAM_PAN_A, /* Not supported after USB Type-C Standard v1.0b */ + USBC_DPAM_PAN_B, /* Not supported after USB Type-C Standard v1.0b */ + USBC_DPAM_PAN_C, /* USBC_DPAM_PAN_C_REVERSE - 6 */ + USBC_DPAM_PAN_D, + USBC_DPAM_PAN_E, + USBC_DPAM_PAN_F, /* Not supported after USB Type-C Standard v1.0b */ + USBC_DPAM_PAN_A_REVERSE,/* Not supported after USB Type-C Standard v1.0b */ + USBC_DPAM_PAN_B_REVERSE,/* Not supported after USB Type-C Standard v1.0b */ + USBC_DPAM_PAN_C_REVERSE, + USBC_DPAM_PAN_D_REVERSE, + USBC_DPAM_PAN_E_REVERSE, + USBC_DPAM_PAN_F_REVERSE,/* Not supported after USB Type-C Standard v1.0b */ +}; + +struct gaokun_ucsi_reg { + u8 port_num; + u8 port_updt; + u8 port_data[4]; + u8 checksum; + u8 reserved; +} __packed; + +struct gaokun_ucsi_port { + struct completion usb_ack; + spinlock_t lock; + + struct gaokun_ucsi *ucsi; + struct auxiliary_device *bridge; + + int idx; + enum gaokun_ucsi_ccx ccx; + enum gaokun_ucsi_mux mux; + u8 mode; + u16 svid; + u8 hpd_state; + u8 hpd_irq; +}; + +struct gaokun_ucsi { + struct gaokun_ec *ec; + struct ucsi *ucsi; + struct gaokun_ucsi_port *ports; + struct device *dev; + struct delayed_work work; + struct notifier_block nb; + u16 version; + u8 port_num; +}; + +/* -------------------------------------------------------------------------- */ +/* For UCSI */ + +static int gaokun_ucsi_read_version(struct ucsi *ucsi, u16 *version) +{ + struct gaokun_ucsi *uec = ucsi_get_drvdata(ucsi); + + *version = uec->version; + + return 0; +} + +static int gaokun_ucsi_read_cci(struct ucsi *ucsi, u32 *cci) +{ + struct gaokun_ucsi *uec = ucsi_get_drvdata(ucsi); + u8 buf[GAOKUN_UCSI_READ_SIZE]; + int ret; + + ret = gaokun_ec_ucsi_read(uec->ec, buf); + if (ret) + return ret; + + memcpy(cci, buf, sizeof(*cci)); + + return 0; +} + +static int gaokun_ucsi_read_message_in(struct ucsi *ucsi, + void *val, size_t val_len) +{ + struct gaokun_ucsi *uec = ucsi_get_drvdata(ucsi); + u8 buf[GAOKUN_UCSI_READ_SIZE]; + int ret; + + ret = gaokun_ec_ucsi_read(uec->ec, buf); + if (ret) + return ret; + + memcpy(val, buf + GAOKUN_UCSI_CCI_SIZE, + min(val_len, GAOKUN_UCSI_DATA_SIZE)); + + return 0; +} + +static int gaokun_ucsi_async_control(struct ucsi *ucsi, u64 command) +{ + struct gaokun_ucsi *uec = ucsi_get_drvdata(ucsi); + u8 buf[GAOKUN_UCSI_WRITE_SIZE] = {}; + + memcpy(buf, &command, sizeof(command)); + + return gaokun_ec_ucsi_write(uec->ec, buf); +} + +static void gaokun_ucsi_update_connector(struct ucsi_connector *con) +{ + struct gaokun_ucsi *uec = ucsi_get_drvdata(con->ucsi); + + if (con->num > uec->port_num) + return; + + con->typec_cap.orientation_aware = true; +} + +static void gaokun_set_orientation(struct ucsi_connector *con, + struct gaokun_ucsi_port *port) +{ + enum gaokun_ucsi_ccx ccx; + unsigned long flags; + + spin_lock_irqsave(&port->lock, flags); + ccx = port->ccx; + spin_unlock_irqrestore(&port->lock, flags); + + typec_set_orientation(con->port, CCX_TO_ORI(ccx)); +} + +static void gaokun_ucsi_connector_status(struct ucsi_connector *con) +{ + struct gaokun_ucsi *uec = ucsi_get_drvdata(con->ucsi); + int idx; + + idx = con->num - 1; + if (con->num > uec->port_num) { + dev_warn(uec->dev, "set orientation out of range: con%d\n", idx); + return; + } + + gaokun_set_orientation(con, &uec->ports[idx]); +} + +const struct ucsi_operations gaokun_ucsi_ops = { + .read_version = gaokun_ucsi_read_version, + .read_cci = gaokun_ucsi_read_cci, + .read_message_in = gaokun_ucsi_read_message_in, + .sync_control = ucsi_sync_control_common, + .async_control = gaokun_ucsi_async_control, + .update_connector = gaokun_ucsi_update_connector, + .connector_status = gaokun_ucsi_connector_status, +}; + +/* -------------------------------------------------------------------------- */ +/* For Altmode */ + +static void gaokun_ucsi_port_update(struct gaokun_ucsi_port *port, + const u8 *port_data) +{ + struct gaokun_ucsi *uec = port->ucsi; + int offset = port->idx * 2; /* every port has 2 Bytes data */ + unsigned long flags; + u8 dcc, ddi; + + dcc = port_data[offset]; + ddi = port_data[offset + 1]; + + spin_lock_irqsave(&port->lock, flags); + + port->ccx = FIELD_GET(GAOKUN_CCX_MASK, dcc); + port->mux = FIELD_GET(GAOKUN_MUX_MASK, dcc); + port->mode = FIELD_GET(GAOKUN_DPAM_MASK, ddi); + port->hpd_state = FIELD_GET(GAOKUN_HPD_STATE_MASK, ddi); + port->hpd_irq = FIELD_GET(GAOKUN_HPD_IRQ_MASK, ddi); + + /* Mode and SVID are unused; keeping them to make things clearer */ + switch (port->mode) { + case USBC_DPAM_PAN_C: + case USBC_DPAM_PAN_C_REVERSE: + port->mode = DP_PIN_ASSIGN_C; /* correct it for usb later */ + break; + case USBC_DPAM_PAN_D: + case USBC_DPAM_PAN_D_REVERSE: + port->mode = DP_PIN_ASSIGN_D; + break; + case USBC_DPAM_PAN_E: + case USBC_DPAM_PAN_E_REVERSE: + port->mode = DP_PIN_ASSIGN_E; + break; + case USBC_DPAM_PAN_NONE: + port->mode = TYPEC_STATE_SAFE; + break; + default: + dev_warn(uec->dev, "unknow mode %d\n", port->mode); + break; + } + + switch (port->mux) { + case USBC_MUX_NONE: + port->svid = 0; + break; + case USBC_MUX_USB_2L: + port->svid = USB_SID_PD; + port->mode = TYPEC_STATE_USB; /* same as PAN_C, correct it */ + break; + case USBC_MUX_DP_4L: + case USBC_MUX_USB_DP: + port->svid = USB_SID_DISPLAYPORT; + break; + default: + dev_warn(uec->dev, "unknow mux state %d\n", port->mux); + break; + } + + spin_unlock_irqrestore(&port->lock, flags); +} + +static int gaokun_ucsi_refresh(struct gaokun_ucsi *uec) +{ + struct gaokun_ucsi_reg ureg; + int ret, idx; + + ret = gaokun_ec_ucsi_get_reg(uec->ec, (u8 *)&ureg); + if (ret) + return GAOKUN_UCSI_NO_PORT_UPDATE; + + uec->port_num = ureg.port_num; + idx = GET_IDX(ureg.port_updt); + + if (idx < 0 || idx >= ureg.port_num) + return GAOKUN_UCSI_NO_PORT_UPDATE; + + gaokun_ucsi_port_update(&uec->ports[idx], ureg.port_data); + return idx; +} + +static void gaokun_ucsi_handle_altmode(struct gaokun_ucsi_port *port) +{ + struct gaokun_ucsi *uec = port->ucsi; + int idx = port->idx; + + if (idx >= uec->ucsi->cap.num_connectors) { + dev_warn(uec->dev, "altmode port out of range: %d\n", idx); + return; + } + + /* UCSI callback .connector_status() have set orientation */ + if (port->bridge) + drm_aux_hpd_bridge_notify(&port->bridge->dev, + port->hpd_state ? + connector_status_connected : + connector_status_disconnected); + + gaokun_ec_ucsi_pan_ack(uec->ec, port->idx); +} + +static void gaokun_ucsi_altmode_notify_ind(struct gaokun_ucsi *uec) +{ + int idx; + + if (!uec->ucsi->connector) { /* slow to register */ + dev_err(uec->dev, "ucsi connector is not initialized yet\n"); + return; + } + + idx = gaokun_ucsi_refresh(uec); + if (idx == GAOKUN_UCSI_NO_PORT_UPDATE) + gaokun_ec_ucsi_pan_ack(uec->ec, idx); /* ack directly if no update */ + else + gaokun_ucsi_handle_altmode(&uec->ports[idx]); +} + +/* + * USB event is necessary for enabling altmode, the event should follow + * UCSI event, if not after timeout(this notify may be disabled somehow), + * then force to enable altmode. + */ +static void gaokun_ucsi_handle_no_usb_event(struct gaokun_ucsi *uec, int idx) +{ + struct gaokun_ucsi_port *port; + + port = &uec->ports[idx]; + if (!wait_for_completion_timeout(&port->usb_ack, 2 * HZ)) { + dev_warn(uec->dev, "No USB EVENT, triggered by UCSI EVENT"); + gaokun_ucsi_altmode_notify_ind(uec); + } +} + +static int gaokun_ucsi_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + u32 cci; + struct gaokun_ucsi *uec = container_of(nb, struct gaokun_ucsi, nb); + + switch (action) { + case EC_EVENT_USB: + gaokun_ucsi_altmode_notify_ind(uec); + return NOTIFY_OK; + + case EC_EVENT_UCSI: + uec->ucsi->ops->read_cci(uec->ucsi, &cci); + ucsi_notify_common(uec->ucsi, cci); + if (UCSI_CCI_CONNECTOR(cci)) + gaokun_ucsi_handle_no_usb_event(uec, UCSI_CCI_CONNECTOR(cci) - 1); + + return NOTIFY_OK; + + default: + return NOTIFY_DONE; + } +} + +static inline int gaokun_ucsi_get_port_num(struct gaokun_ucsi *uec) +{ + struct gaokun_ucsi_reg ureg; + int ret; + + ret = gaokun_ec_ucsi_get_reg(uec->ec, (u8 *)&ureg); + + return ret ? 0 : ureg.port_num; +} + +static int gaokun_ucsi_ports_init(struct gaokun_ucsi *uec) +{ + u32 port; + int i, ret, port_num; + struct device *dev = uec->dev; + struct gaokun_ucsi_port *ucsi_port; + struct fwnode_handle *fwnode; + + port_num = gaokun_ucsi_get_port_num(uec); + uec->port_num = port_num; + + uec->ports = devm_kcalloc(dev, port_num, sizeof(*(uec->ports)), + GFP_KERNEL); + if (!uec->ports) + return -ENOMEM; + + for (i = 0; i < port_num; ++i) { + ucsi_port = &uec->ports[i]; + ucsi_port->ccx = USBC_CCX_NONE; + ucsi_port->idx = i; + ucsi_port->ucsi = uec; + init_completion(&ucsi_port->usb_ack); + spin_lock_init(&ucsi_port->lock); + } + + device_for_each_child_node(dev, fwnode) { + ret = fwnode_property_read_u32(fwnode, "reg", &port); + if (ret < 0) { + dev_err(dev, "missing reg property of %pOFn\n", fwnode); + fwnode_handle_put(fwnode); + return ret; + } + + if (port >= port_num) { + dev_warn(dev, "invalid connector number %d, ignoring\n", port); + continue; + } + + ucsi_port = &uec->ports[port]; + ucsi_port->bridge = devm_drm_dp_hpd_bridge_alloc(dev, to_of_node(fwnode)); + if (IS_ERR(ucsi_port->bridge)) { + fwnode_handle_put(fwnode); + return PTR_ERR(ucsi_port->bridge); + } + } + + for (i = 0; i < port_num; i++) { + if (!uec->ports[i].bridge) + continue; + + ret = devm_drm_dp_hpd_bridge_add(dev, uec->ports[i].bridge); + if (ret) + return ret; + } + + return 0; +} + +static void gaokun_ucsi_register_worker(struct work_struct *work) +{ + struct gaokun_ucsi *uec; + struct ucsi *ucsi; + int ret; + + uec = container_of(work, struct gaokun_ucsi, work.work); + ucsi = uec->ucsi; + /* This may be a problem specific to sc8280xp-based machines */ + ucsi->quirks = UCSI_NO_PARTNER_PDOS | UCSI_DELAY_DEVICE_PDOS; + + ret = gaokun_ec_register_notify(uec->ec, &uec->nb); + if (ret) { + dev_err_probe(ucsi->dev, ret, "notifier register failed\n"); + return; + } + + ret = ucsi_register(ucsi); + if (ret) + dev_err_probe(ucsi->dev, ret, "ucsi register failed\n"); +} + +static inline int gaokun_ucsi_register(struct gaokun_ucsi *uec) +{ + /* EC can't handle UCSI properly in the early stage */ + schedule_delayed_work(&uec->work, 3 * HZ); + + return 0; +} + +static int gaokun_ucsi_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct gaokun_ec *ec = adev->dev.platform_data; + struct device *dev = &adev->dev; + struct gaokun_ucsi *uec; + int ret; + + uec = devm_kzalloc(dev, sizeof(*uec), GFP_KERNEL); + if (!uec) + return -ENOMEM; + + uec->ec = ec; + uec->dev = dev; + uec->version = 0x0100; + uec->nb.notifier_call = gaokun_ucsi_notify; + + INIT_DELAYED_WORK(&uec->work, gaokun_ucsi_register_worker); + + ret = gaokun_ucsi_ports_init(uec); + if (ret) + return ret; + + uec->ucsi = ucsi_create(dev, &gaokun_ucsi_ops); + if (IS_ERR(uec->ucsi)) + return PTR_ERR(uec->ucsi); + + ucsi_set_drvdata(uec->ucsi, uec); + auxiliary_set_drvdata(adev, uec); + + return gaokun_ucsi_register(uec); +} + +static void gaokun_ucsi_remove(struct auxiliary_device *adev) +{ + struct gaokun_ucsi *uec = auxiliary_get_drvdata(adev); + + gaokun_ec_unregister_notify(uec->ec, &uec->nb); + ucsi_unregister(uec->ucsi); + ucsi_destroy(uec->ucsi); +} + +static const struct auxiliary_device_id gaokun_ucsi_id_table[] = { + { .name = GAOKUN_MOD_NAME "." GAOKUN_DEV_UCSI, }, + {} +}; +MODULE_DEVICE_TABLE(auxiliary, gaokun_ucsi_id_table); + +static struct auxiliary_driver gaokun_ucsi_driver = { + .name = GAOKUN_DEV_UCSI, + .id_table = gaokun_ucsi_id_table, + .probe = gaokun_ucsi_probe, + .remove = gaokun_ucsi_remove, +}; + +module_auxiliary_driver(gaokun_ucsi_driver); + +MODULE_DESCRIPTION("HUAWEI Matebook E Go UCSI driver"); +MODULE_LICENSE("GPL"); From patchwork Sun Jan 5 17:41:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pengyu Luo X-Patchwork-Id: 855235 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (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 84184194A74; Sun, 5 Jan 2025 17:44:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099096; cv=none; b=XeHzI+tH90epCxr/gQ77MRqCqjjSnNYh8Mn0dLp1uHoLDQmbP4WUdSXpG9BCsXEzxQqefJriEiZHJpQobHKfKlHfms0K0PbBxIael+QHtg2xT9eYJgmZ690p604YRljhy1fs8DiPdXiotmOKpkVdL7h7MGWVYgaRFe6hldE2+vc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099096; c=relaxed/simple; bh=xVHeUc/C4u1daGbrWuogd81/0rcQNKbsMESLSlYwRl0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NrBOfIGZ3mtJ7H6HyY5uazaxi/7w17RQPy9vL/eyvCR2G3Hjb16p6Dt39MUH0/F7jPQkESx+AIPTA82x1xcavt3vp0u+S5UXTNijgSxclrpOpZMq68EppCO6seyD4JlTKYGV7KtF5Tg8x0+4oTpoGDgbbMrkTHNZax/wz3F50lc= 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=moz5IHtl; arc=none smtp.client-ip=209.85.214.177 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="moz5IHtl" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-21649a7bcdcso187913385ad.1; Sun, 05 Jan 2025 09:44:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736099094; x=1736703894; 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=gZLsaP+3GWbBerxQUrnDJSoxZwCUOex2k8o1U+GPlvY=; b=moz5IHtlkDYRhfwS6lUc9LzmsXgDHPR1gOxvBr3YB5row0Md0rsoOoPZvyiiVP36Xo 6ohMi7/Duljy4iAF8RwTVgMdEXh+hJ+/gh3t8MrYWR1MsGnI3tx0Fp84v4p+rXUr/frZ mREvPa15j024IsM42C6QUzRZlZLnrQbf+fEGpPLLlMnkssHbRjCW9OLxBPvSvCxsm6/u /Dnx5Rez85/SxZHuOljK8QA7QptvDO7mEs9fRg5tzF5d5+X03HoQGfTgHo8TOedUtyud VlgRMgHjFOmTJ9ihpDuKbGkcd2YSac/YuEHlyFKAH34X+AlW/i2SQH2Nv5GsDX3Pe4CY HGUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736099094; x=1736703894; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gZLsaP+3GWbBerxQUrnDJSoxZwCUOex2k8o1U+GPlvY=; b=k5T8xvaN0GvPeZKEnmGBB+PrsXPAMQf3dHBHnEcwDVSneskV4YnIvnlSny8DrYtDZY TrzJ+GnajZBdCp0WE6T2vZRQed0Dm8MdiYg4PUOQzRkSeI/dGdj2A2a94rjB0XFqJ4JW Pge52BB4wNR9RIt9H3XsQWhAszZbVrhlLvxpxRjjJhTWBivYusiRCo2GD08haOfSzpRh 1BqsESBIgu5hWwlg1kK9anfwX+irb79VZmQX+DSAZFDkeJ0bUD1K1+RvOBdfFwhrWy41 wWKFUuy2Bc2OpLSPYpuQdb1636/aQDF/yuf8XT+oW4JZfqfjgud/KyPpU9fTG6U7DCdu 7YBg== X-Forwarded-Encrypted: i=1; AJvYcCV2/FJwuQEqR90HwAeMEG3FcXqgaxxdSEmKkeDRSwf9g7NTrPe6QWvZBNhikdJSS4/a+uLm+wRoq5smzSU=@vger.kernel.org, AJvYcCVWf/bJ5wECdYcncX+c3iRrry/LU3amYDAEuj9m+3x2Y7D6scUzzrNVRXszEpkaEuS+ncKp9ZLYsXGq@vger.kernel.org, AJvYcCWTKT9BppjgEl9A0hcG0uElEJm73w91piXs8xJVxZ5xarAQK7DysvLbm66B1SobyzIDlON1370DRhw=@vger.kernel.org, AJvYcCWXhqsAJgvpsZOiYks9DMXWTB1OzEsUShY/+Y3UNEnHKb97B197Azs/Qz7j3SaF8EuSU8+wJmz3shVM0a2wVIXWobvibA==@vger.kernel.org, AJvYcCWhDPFILInRcYXtjFNq3bHIZMLQrueGtglQNEDhbMOkaSeUwyEqF60DDjkSGC0LkubVfWBLJF2d2giW0oua@vger.kernel.org, AJvYcCXG7WMQHz4/BHIGOu1vYxNG5NJcONEKcs76bPlgVaYIlyzdX5ArB4pan9XBKNYos+wuvUmSYBECLy6mEXlq@vger.kernel.org X-Gm-Message-State: AOJu0YybTc/vq7SeANI77MSUqzO8owyLIXFBofDb1T7C/kpy3LTzsRqi w2ciVNvZ2N9Fe5aSlyaWjFee9aAcf6lmlZHSohKVuU++i1x8DPLI X-Gm-Gg: ASbGncs0H5Y8PxH+okYOwRikCzk3huzyAVVRn8n2CI9SxcnYZXlfp4rW8ge2vnNwCD1 o0qbQ6+muYCjKlCr6z73euzobf3J70sZqUFppWpQKFLjQmzBXqXrfBiC9+kNBPtOzYPyYvEsKVx uzCpOGkcH2dqWIRQo96VR+cMqBUYvewhqtLjem4d4rh+pmPdTFIqwqv3IBPGR7fS1sNf9M2Ba96 RuIYGusz47uJduUftSH3h8pdVsrld3cdZMrwn8lhd40H4ebJ+V0fdI= X-Google-Smtp-Source: AGHT+IEIGhhwGKeXdLbTeAZmLA4GuhP9OQ+KHuIuhth4AjtsuC0yDQQ/THKrMFqO/AogEJjkKic9Fw== X-Received: by 2002:a05:6a20:7f99:b0:1e0:cfc0:df34 with SMTP id adf61e73a8af0-1e5e0470226mr81719777637.16.1736099093722; Sun, 05 Jan 2025 09:44:53 -0800 (PST) Received: from nuvole.. ([144.202.86.13]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-842abd5927fsm27375046a12.10.2025.01.05.09.44.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2025 09:44:52 -0800 (PST) From: Pengyu Luo To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Sebastian Reichel , Heikki Krogerus , Greg Kroah-Hartman , Jean Delvare , Guenter Roeck Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-hwmon@vger.kernel.org, Dmitry Baryshkov , Pengyu Luo Subject: [PATCH v2 4/5] power: supply: add Huawei Matebook E Go psy driver Date: Mon, 6 Jan 2025 01:41:58 +0800 Message-ID: <20250105174159.227831-5-mitltlatltl@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250105174159.227831-1-mitltlatltl@gmail.com> References: <20250105174159.227831-1-mitltlatltl@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On the Huawei Matebook E Go tablet the EC provides access to the adapter and battery status. Add the driver to read power supply status on the tablet. Signed-off-by: Pengyu Luo --- .../ABI/testing/sysfs-class-power-gaokun | 47 ++ drivers/power/supply/Kconfig | 10 + drivers/power/supply/Makefile | 1 + drivers/power/supply/huawei-gaokun-battery.c | 548 ++++++++++++++++++ 4 files changed, 606 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-power-gaokun create mode 100644 drivers/power/supply/huawei-gaokun-battery.c diff --git a/Documentation/ABI/testing/sysfs-class-power-gaokun b/Documentation/ABI/testing/sysfs-class-power-gaokun new file mode 100644 index 000000000..b1eb9e8d7 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-power-gaokun @@ -0,0 +1,47 @@ +What: /sys/class/power_supply/gaokun-ec-battery/smart_charge +Date: January 2025 +KernelVersion: 6.12 +Contact: Pengyu Luo +Description: + This entry allows configuration of smart charging behavior with + four parameters. The format is: . + + - mode: Defines the charging mode (1 or 4). Mode 4 enables delay, + while mode 1 does not. + - delay: Specifies the delay in hours (non-negative). This is + only used when 'mode' is set to 4. + - start: The battery percentage at which charging starts (0-100). + - stop: The battery percentage at which charging stops (1-100). + + When the laptop is connected to a power adapter, it starts + charging if the battery level is below the 'start' value. It + continues charging until the battery reaches the 'stop' level. + If the battery is already above the 'stop' level, charging is + paused. + + When the power adapter is always connected, charging will + begin if the battery level falls below 'start', and charging + will stop once the battery reaches 'stop'. + + If mode is set to 4, the above charging mode will only occur + after the specified delay in hours. If mode is 1, there is + no delay. + + Access: Read, Write + + Valid values: + - mode: integer value (1 or 4) + - delay: integer value, delay in hours (non-negative) + - start: integer value, battery percentage (0-100) + - stop: integer value, battery percentage (1-100) + +What: /sys/class/power_supply/gaokun-ec-battery/smart_charge_enable +Date: January 2025 +KernelVersion: 6.12 +Contact: Pengyu Luo +Description: + This entry allows enabling smart charging. + + Access: Read, Write + + Valid values: 0 (disabled) or 1 (enabled) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 9f2eef678..f00983186 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -161,6 +161,16 @@ config BATTERY_DS2782 Say Y here to enable support for the DS2782/DS2786 standalone battery gas-gauge. +config BATTERY_HUAWEI_GAOKUN + tristate "Huawei Matebook E Go power supply" + depends on EC_HUAWEI_GAOKUN + help + This driver enables battery and adapter support on the Huawei Matebook + E Go, which is a sc8280xp-based 2-in-1 tablet. + + To compile the driver as a module, choose M here: the module will be + called huawei-gaokun-battery. + config BATTERY_LEGO_EV3 tristate "LEGO MINDSTORMS EV3 battery" depends on OF && IIO && GPIOLIB && (ARCH_DAVINCI_DA850 || COMPILE_TEST) diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 59c4a9f40..c0941a832 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_BATTERY_DS2781) += ds2781_battery.o obj-$(CONFIG_BATTERY_DS2782) += ds2782_battery.o obj-$(CONFIG_BATTERY_GAUGE_LTC2941) += ltc2941-battery-gauge.o obj-$(CONFIG_BATTERY_GOLDFISH) += goldfish_battery.o +obj-$(CONFIG_BATTERY_HUAWEI_GAOKUN) += huawei-gaokun-battery.o obj-$(CONFIG_BATTERY_LEGO_EV3) += lego_ev3_battery.o obj-$(CONFIG_BATTERY_LENOVO_YOGA_C630) += lenovo_yoga_c630_battery.o obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o diff --git a/drivers/power/supply/huawei-gaokun-battery.c b/drivers/power/supply/huawei-gaokun-battery.c new file mode 100644 index 000000000..65b617aea --- /dev/null +++ b/drivers/power/supply/huawei-gaokun-battery.c @@ -0,0 +1,548 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * huawei-gaokun-battery - A power supply driver for HUAWEI Matebook E Go + * + * reference: drivers/power/supply/lenovo_yoga_c630_battery.c + * drivers/platform/arm64/acer-aspire1-ec.c + * drivers/acpi/battery.c + * drivers/acpi/ac.c + * + * Copyright (C) 2024 Pengyu Luo + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* -------------------------------------------------------------------------- */ +/* String Data Reg */ + +#define EC_BAT_VENDOR 0x01 /* from 0x01 to 0x0F, SUNWODA */ +#define EC_BAT_MODEL 0x11 /* from 0x11 to 0x1F, HB30A8P9ECW-22T */ + +#define EC_ADP_STATUS 0x81 +#define EC_AC_STATUS BIT(0) +#define EC_BAT_PRESENT BIT(1) /* BATC._STA */ + +#define EC_BAT_STATUS 0x82 /* _BST */ +#define EC_BAT_DISCHARGING BIT(0) +#define EC_BAT_CHARGING BIT(1) +#define EC_BAT_CRITICAL BIT(2) /* Low Battery Level */ +#define EC_BAT_FULL BIT(3) + +/* -------------------------------------------------------------------------- */ +/* Word Data Reg */ + +/* 0x5A: ? + * 0x5C: ? + * 0x5E: ? + * 0X60: ? + * 0x84: ? + */ + +#define EC_BAT_STATUS_START 0x90 +#define EC_BAT_PERCENTAGE 0x90 +#define EC_BAT_VOLTAGE 0x92 +#define EC_BAT_CAPACITY 0x94 +#define EC_BAT_FULL_CAPACITY 0x96 +/* 0x98: ? */ +#define EC_BAT_CURRENT 0x9A +/* 0x9C: ? */ + +#define EC_BAT_INFO_START 0xA0 +/* 0xA0: POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT? */ +#define EC_BAT_DESIGN_CAPACITY 0xA2 +#define EC_BAT_DESIGN_VOLTAGE 0xA4 +#define EC_BAT_SERIAL_NUMBER 0xA6 +#define EC_BAT_CYCLE_COUNT 0xAA + +/* -------------------------------------------------------------------------- */ +/* Battery Event ID */ + +#define EC_EVENT_BAT_A0 0xA0 +#define EC_EVENT_BAT_A1 0xA1 +#define EC_EVENT_BAT_A2 0xA2 +#define EC_EVENT_BAT_A3 0xA3 +#define EC_EVENT_BAT_B1 0xB1 +/* EVENT B1 A0 A1 repeat about every 1s 2s 3s respectively */ + +/* ACPI _BIX field, Min sampling time, the duration between two _BST */ +#define CACHE_TIME 3000 /* cache time in milliseconds */ + +#define MILLI_TO_MICRO 1000 + +struct gaokun_psy_bat_status { + __le16 percentage_now; /* 0x90 */ + __le16 voltage_now; + __le16 capacity_now; + __le16 full_capacity; + __le16 unknown1; + __le16 rate_now; + __le16 unknown2; /* 0x9C */ +} __packed; + +struct gaokun_psy_bat_info { + __le16 unknown3; /* 0xA0 */ + __le16 design_capacity; + __le16 design_voltage; + __le16 serial_number; + __le16 padding2; + __le16 cycle_count; /* 0xAA */ +} __packed; + +struct gaokun_psy { + struct gaokun_ec *ec; + struct device *dev; + struct notifier_block nb; + + struct power_supply *bat_psy; + struct power_supply *adp_psy; + + unsigned long update_time; + struct gaokun_psy_bat_status status; + struct gaokun_psy_bat_info info; + + char battery_model[0x10]; /* HB30A8P9ECW-22T, the real one is XXX-22A */ + char battery_serial[0x10]; + char battery_vendor[0x10]; + + int charge_now; + int online; + int bat_present; +}; + +/* -------------------------------------------------------------------------- */ +/* Adapter */ + +static int gaokun_psy_get_adp_status(struct gaokun_psy *ecbat) +{ + /* _PSR */ + int ret; + u8 online; + + ret = gaokun_ec_psy_read_byte(ecbat->ec, EC_ADP_STATUS, &online); + if (ret) + return ret; + + ecbat->online = !!(online & EC_AC_STATUS); + + return 0; +} + +static int gaokun_psy_get_adp_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct gaokun_psy *ecbat = power_supply_get_drvdata(psy); + int ret; + + ret = gaokun_psy_get_adp_status(ecbat); + if (ret) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = ecbat->online; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static enum power_supply_property gaokun_psy_adp_props[] = { + POWER_SUPPLY_PROP_ONLINE, +}; + +static const struct power_supply_desc gaokun_psy_adp_desc = { + .name = "gaokun-ec-adapter", + .type = POWER_SUPPLY_TYPE_USB_TYPE_C, + .get_property = gaokun_psy_get_adp_property, + .properties = gaokun_psy_adp_props, + .num_properties = ARRAY_SIZE(gaokun_psy_adp_props), +}; + +/* -------------------------------------------------------------------------- */ +/* Battery */ + +static inline void gaokun_psy_get_bat_present(struct gaokun_psy *ecbat) +{ + int ret; + u8 present; + + /* Some kind of initialization */ + gaokun_ec_write(ecbat->ec, (u8 []){0x02, 0xB2, 1, 0x90}); + + ret = gaokun_ec_psy_read_byte(ecbat->ec, EC_ADP_STATUS, &present); + + ecbat->bat_present = ret ? false : !!(present & EC_BAT_PRESENT); +} + +static inline int gaokun_psy_bat_present(struct gaokun_psy *ecbat) +{ + return ecbat->bat_present; +} + +static int gaokun_psy_get_bat_info(struct gaokun_psy *ecbat) +{ + /* _BIX */ + if (!gaokun_psy_bat_present(ecbat)) + return 0; + + return gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_INFO_START, + sizeof(ecbat->info), (u8 *)&ecbat->info); +} + +static void gaokun_psy_update_bat_charge(struct gaokun_psy *ecbat) +{ + u8 charge; + + gaokun_ec_psy_read_byte(ecbat->ec, EC_BAT_STATUS, &charge); + + switch (charge) { + case EC_BAT_CHARGING: + ecbat->charge_now = POWER_SUPPLY_STATUS_CHARGING; + break; + case EC_BAT_DISCHARGING: + ecbat->charge_now = POWER_SUPPLY_STATUS_DISCHARGING; + break; + case EC_BAT_FULL: + ecbat->charge_now = POWER_SUPPLY_STATUS_FULL; + break; + default: + dev_warn(ecbat->dev, "unknown charge state %d\n", charge); + } +} + +static int gaokun_psy_get_bat_status(struct gaokun_psy *ecbat) +{ + /* _BST */ + int ret; + + if (time_before(jiffies, ecbat->update_time + + msecs_to_jiffies(CACHE_TIME))) + return 0; + + gaokun_psy_update_bat_charge(ecbat); + ret = gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_STATUS_START, + sizeof(ecbat->status), (u8 *)&ecbat->status); + + ecbat->update_time = jiffies; + + return ret; +} + +static void gaokun_psy_init(struct gaokun_psy *ecbat) +{ + gaokun_psy_get_bat_present(ecbat); + if (!gaokun_psy_bat_present(ecbat)) + return; + + gaokun_psy_get_bat_info(ecbat); + + snprintf(ecbat->battery_serial, sizeof(ecbat->battery_serial), + "%d", le16_to_cpu(ecbat->info.serial_number)); + + gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_VENDOR, + sizeof(ecbat->battery_vendor) - 1, + ecbat->battery_vendor); + + gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_MODEL, + sizeof(ecbat->battery_model) - 1, + ecbat->battery_model); + + ecbat->battery_model[14] = 'A'; /* FIX UP */ +} + +static int gaokun_psy_get_bat_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct gaokun_psy *ecbat = power_supply_get_drvdata(psy); + + if (gaokun_psy_bat_present(ecbat)) + gaokun_psy_get_bat_status(ecbat); + else if (psp != POWER_SUPPLY_PROP_PRESENT) + return -ENODEV; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + val->intval = ecbat->charge_now; + break; + + case POWER_SUPPLY_PROP_PRESENT: + val->intval = ecbat->bat_present; + break; + + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = POWER_SUPPLY_TECHNOLOGY_LION; + break; + + case POWER_SUPPLY_PROP_CYCLE_COUNT: + val->intval = le16_to_cpu(ecbat->info.cycle_count); + break; + + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + val->intval = le16_to_cpu(ecbat->info.design_voltage) * MILLI_TO_MICRO; + break; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + val->intval = le16_to_cpu(ecbat->status.voltage_now) * MILLI_TO_MICRO; + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + val->intval = (s16)le16_to_cpu(ecbat->status.rate_now) * MILLI_TO_MICRO; + break; + + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + val->intval = le16_to_cpu(ecbat->info.design_capacity) * MILLI_TO_MICRO; + break; + + case POWER_SUPPLY_PROP_CHARGE_FULL: + val->intval = le16_to_cpu(ecbat->status.full_capacity) * MILLI_TO_MICRO; + break; + + case POWER_SUPPLY_PROP_CHARGE_NOW: + val->intval = le16_to_cpu(ecbat->status.capacity_now) * MILLI_TO_MICRO; + break; + + case POWER_SUPPLY_PROP_CAPACITY: + val->intval = le16_to_cpu(ecbat->status.percentage_now); + break; + + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = ecbat->battery_model; + break; + + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = ecbat->battery_vendor; + break; + + case POWER_SUPPLY_PROP_SERIAL_NUMBER: + val->strval = ecbat->battery_serial; + break; + + default: + return -EINVAL; + } + return 0; +} + +static enum power_supply_property gaokun_psy_bat_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_CYCLE_COUNT, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, + POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, + POWER_SUPPLY_PROP_SERIAL_NUMBER, +}; + +static const struct power_supply_desc gaokun_psy_bat_desc = { + .name = "gaokun-ec-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = gaokun_psy_get_bat_property, + .properties = gaokun_psy_bat_props, + .num_properties = ARRAY_SIZE(gaokun_psy_bat_props), +}; + +/* -------------------------------------------------------------------------- */ +/* Sysfs */ + +/* Smart charge enable */ +static ssize_t smart_charge_enable_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct gaokun_psy *ecbat = power_supply_get_drvdata(psy); + int ret; + bool on; + + ret = gaokun_ec_psy_get_smart_charge_enable(ecbat->ec, &on); + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", on); +} + +static ssize_t smart_charge_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct power_supply *psy = to_power_supply(dev); + struct gaokun_psy *ecbat = power_supply_get_drvdata(psy); + int ret; + bool on; + + if (kstrtobool(buf, &on)) + return -EINVAL; + + ret = gaokun_ec_psy_set_smart_charge_enable(ecbat->ec, on); + if (ret) + return ret; + + return size; +} + +static DEVICE_ATTR_RW(smart_charge_enable); + +/* Smart charge */ +static ssize_t smart_charge_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct gaokun_psy *ecbat = power_supply_get_drvdata(psy); + u8 bf[GAOKUN_SMART_CHARGE_DATA_SIZE]; + int ret; + + ret = gaokun_ec_psy_get_smart_charge(ecbat->ec, bf); + if (ret) + return ret; + + return sysfs_emit(buf, "%d %d %d %d\n", + bf[0], bf[1], bf[2], bf[3]); +} + +static ssize_t smart_charge_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct power_supply *psy = to_power_supply(dev); + struct gaokun_psy *ecbat = power_supply_get_drvdata(psy); + u8 bf[GAOKUN_SMART_CHARGE_DATA_SIZE]; + int ret; + + if (sscanf(buf, "%hhd %hhd %hhd %hhd", bf, bf + 1, bf + 2, bf + 3) != 4) + return -EINVAL; + + if (bf[0] != 1 && bf[0] != 4) + return -EINVAL; + + ret = gaokun_ec_psy_set_smart_charge(ecbat->ec, bf); + if (ret) + return ret; + + return size; +} + +static DEVICE_ATTR_RW(smart_charge); + +static struct attribute *gaokun_psy_features_attrs[] = { + &dev_attr_smart_charge_enable.attr, + &dev_attr_smart_charge.attr, + NULL, +}; +ATTRIBUTE_GROUPS(gaokun_psy_features); + +static int gaokun_psy_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct gaokun_psy *ecbat = container_of(nb, struct gaokun_psy, nb); + + switch (action) { + case EC_EVENT_BAT_A2: + case EC_EVENT_BAT_B1: + gaokun_psy_get_bat_info(ecbat); + return NOTIFY_OK; + + case EC_EVENT_BAT_A0: + gaokun_psy_get_adp_status(ecbat); + power_supply_changed(ecbat->adp_psy); + msleep(10); + fallthrough; + + case EC_EVENT_BAT_A1: + case EC_EVENT_BAT_A3: + if (action == EC_EVENT_BAT_A3) { + gaokun_psy_get_bat_info(ecbat); + msleep(100); + } + gaokun_psy_get_bat_status(ecbat); + power_supply_changed(ecbat->bat_psy); + return NOTIFY_OK; + + default: + return NOTIFY_DONE; + } +} + +static int gaokun_psy_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct gaokun_ec *ec = adev->dev.platform_data; + struct power_supply_config psy_cfg = {}; + struct device *dev = &adev->dev; + struct gaokun_psy *ecbat; + + ecbat = devm_kzalloc(&adev->dev, sizeof(*ecbat), GFP_KERNEL); + if (!ecbat) + return -ENOMEM; + + ecbat->ec = ec; + ecbat->dev = dev; + ecbat->nb.notifier_call = gaokun_psy_notify; + + auxiliary_set_drvdata(adev, ecbat); + + psy_cfg.drv_data = ecbat; + ecbat->adp_psy = devm_power_supply_register(dev, &gaokun_psy_adp_desc, + &psy_cfg); + if (IS_ERR(ecbat->adp_psy)) + return dev_err_probe(dev, PTR_ERR(ecbat->adp_psy), + "Failed to register AC power supply\n"); + + psy_cfg.supplied_to = (char **)&gaokun_psy_bat_desc.name; + psy_cfg.num_supplicants = 1; + psy_cfg.no_wakeup_source = true; + psy_cfg.attr_grp = gaokun_psy_features_groups; + ecbat->bat_psy = devm_power_supply_register(dev, &gaokun_psy_bat_desc, + &psy_cfg); + if (IS_ERR(ecbat->bat_psy)) + return dev_err_probe(dev, PTR_ERR(ecbat->bat_psy), + "Failed to register battery power supply\n"); + gaokun_psy_init(ecbat); + + return gaokun_ec_register_notify(ec, &ecbat->nb); +} + +static void gaokun_psy_remove(struct auxiliary_device *adev) +{ + struct gaokun_psy *ecbat = auxiliary_get_drvdata(adev); + + gaokun_ec_unregister_notify(ecbat->ec, &ecbat->nb); +} + +static const struct auxiliary_device_id gaokun_psy_id_table[] = { + { .name = GAOKUN_MOD_NAME "." GAOKUN_DEV_PSY, }, + {} +}; +MODULE_DEVICE_TABLE(auxiliary, gaokun_psy_id_table); + +static struct auxiliary_driver gaokun_psy_driver = { + .name = GAOKUN_DEV_PSY, + .id_table = gaokun_psy_id_table, + .probe = gaokun_psy_probe, + .remove = gaokun_psy_remove, +}; + +module_auxiliary_driver(gaokun_psy_driver); + +MODULE_DESCRIPTION("HUAWEI Matebook E Go psy driver"); +MODULE_LICENSE("GPL"); From patchwork Sun Jan 5 17:41:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pengyu Luo X-Patchwork-Id: 855363 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (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 722351CDA2E; Sun, 5 Jan 2025 17:45:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099111; cv=none; b=QphMVmw2QbYbQZkImrb1FD6S3+2EYBd1HvPXwuas3LeS3BW1Sr3aLl5CwxaEuurJWOU1oLUmrfwMNE5V5VRqH/m9zStIPF0wKTtmSwqWv1gewC3KTJTKEjpvAXQLlVRBQKpmEN0VhF6esEJOuIlfG8fiHgsxdoEJVcquljlVf0M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736099111; c=relaxed/simple; bh=aHxh6mXQm2Pomntp5Apy+gfeS3bWH/sypTFPY9It4WU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IwofaReCjTYRWf2Oed6v/z0+ZTT0HbN3kdXWdcaKZeeQm4s9D+KDA+x0d4w10D9bnc2jCaZH+9fdSl0IWQTKyB1/lP/sQqOBWU3fheMu1mub/imRHj3leVeQW7TRrBBb3XEAEQypUutdytGfiEHHyJZ1SUvK4h9aGQOc5N3icUQ= 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=b6JXcFxz; arc=none smtp.client-ip=209.85.214.177 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="b6JXcFxz" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-21661be2c2dso175958745ad.1; Sun, 05 Jan 2025 09:45:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736099108; x=1736703908; 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=keJpUCOZO1G6z7AqbQ0oWlgGpxQddW7HrAwABR04sv0=; b=b6JXcFxz3duKIR1E6JNFKhQtSQwjdx3pvo5WZvfbqHTjEjXEOmMESvHoHrNLjY7sov COiqODh6CGxd7sR/urQM7wvxfk0DrXlRpmFlCfchA/jO3iBHN1EeWntRSqpmG5ZzffwE JqecJYPqkLKY32UMeJmpAzKUjwvYt4CDMgBEePcdIVWj+BEOnUKrse5FGMhVJ2+KqpBG 9IRTaHk1cucO9JC4tGlzNVtftQKGSPbg4wFDFhxPDVnNG8bLZ547TZV4+iMQ4o1fbo9p Qjda1rcDw/9zpEss723fUQyTfzm42+ppKchz6uiRWvAGnAZhD8uNF2+eBOUehv+EJgXn AMbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736099108; x=1736703908; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=keJpUCOZO1G6z7AqbQ0oWlgGpxQddW7HrAwABR04sv0=; b=s3486e++39sjzGcZrOa/eqXFftdoumkRA9SRErACZfcboVS/HpS1jpgYFbLTtGUlJa JrGlDklvvKW2oflAi8hXP5CWiZEuea8xNnV0mUewcZldvRhLdTY5vZQXsUKhx2z4QtWJ VRsjvFfmWo9G2n1zgyqTUENXBWt1feySJZqi5SJLhDM8p9nFoX94jkSEjCyZWtsqu17Q yjjDz1WRryrsbTRI0WrhG9ClOAyvS276KH14A9CZwxPoM4S/2xmpah1eCJqTtwa3wOhY bkbSHVbS8TNH1h0NuiQnNYgYZZP6JHXbBCbEpXMVKNJ+gD7StZbxQj5UNtzPeHEQH7ab 906g== X-Forwarded-Encrypted: i=1; AJvYcCUBs9RJU8AqnaJRJZ2ZIsbic0GeuY3H+AW26hQZJA7uMn2VNS5JCYNjl4hQ8wykrVq8lIR+L1Jgy3+yN9ls@vger.kernel.org, AJvYcCUP3SlOD63ftes+YDNB8QYBazhXkE+aDZQzL/5fxBlzUHREFnB5xYjb5i2gvdvL+tl7iVau+zfWa4bhHkKv@vger.kernel.org, AJvYcCVBCVjUhanCMUi2FVChZqOknrHzuMRNkqmrt0imdYDZKzAAuVA47OvlPmXTVxwRldD9Q2q5HTd6PVc=@vger.kernel.org, AJvYcCVf3cPSDZWegnGHRnXfl7bLA3Q5yBSNW7rAqYJyp7lqTZQPQiaQx0mE7q1GFHHYVdUoUuWmo//9AVV2Si725rKcXMydOQ==@vger.kernel.org, AJvYcCVmoQcRr6MrInIgWLapt8MDYiOcThi5zbQUfieajtBOpMbdUy9H7GRM0L0Jbqnt5c7VNTM/gkUbYcmGlX4=@vger.kernel.org, AJvYcCWnlDscV4feUVuGlO1OIaWdvZjVK6znaMAR/MHrL/3D+AGMbHrQDCZeB2wMSytBUllx/aa3nbPtOe+T@vger.kernel.org X-Gm-Message-State: AOJu0Yz2acbmFhQfQMDV9+7XDncJ2KQxtRh9tpQd8ZwaLLM5k+0r8s2D gzSXzqJamdk7pAuy5GS8C4r7ZOwv/YziC5n4NiAYOYS3H0qVopj8 X-Gm-Gg: ASbGncsu4+RrqHRhH5Z3630l6aBTI/mTOa6O6RdCee8Wv56dlsusqUaXlBOVDcX/jkn I96BFSj600NS9rKbcYJPhbIdvtY8/0bKgWqYEJ48AyUdBmBvqJxTEVj4sqYa8/iObVzffGhC8KW O0eCYm7gufKYp4WFerw/xfw5N4LtdwagarVsF5cZJK4P7FvvYuIT/rugVIVdq2QA7VM7uOHX3B5 hWEm3DAeacaAE39xDCpiokS2/+2R5aBa6ZNkzKqlJaYOjYyOxR0L24= X-Google-Smtp-Source: AGHT+IF8HVsTW5i+utryOgn5ztd9UTIpIO2jnXnIbnTi49ubQnVwoyiKkRH9bWUyzLDJ6jx/N2MgsQ== X-Received: by 2002:a05:6a21:158d:b0:1e0:d89e:f5bc with SMTP id adf61e73a8af0-1e5e046155fmr91302343637.11.1736099108489; Sun, 05 Jan 2025 09:45:08 -0800 (PST) Received: from nuvole.. ([144.202.86.13]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-842abd5927fsm27375046a12.10.2025.01.05.09.44.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2025 09:45:07 -0800 (PST) From: Pengyu Luo To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue , Sebastian Reichel , Heikki Krogerus , Greg Kroah-Hartman , Jean Delvare , Guenter Roeck Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-hwmon@vger.kernel.org, Dmitry Baryshkov , Pengyu Luo Subject: [PATCH v2 5/5] arm64: dts: qcom: gaokun3: Add Embedded Controller node Date: Mon, 6 Jan 2025 01:41:59 +0800 Message-ID: <20250105174159.227831-6-mitltlatltl@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250105174159.227831-1-mitltlatltl@gmail.com> References: <20250105174159.227831-1-mitltlatltl@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The Embedded Controller in the Huawei Matebook E Go is accessible on &i2c15 and provides battery and adapter status, port orientation status, as well as HPD event notifications for two USB Type-C port, etc. Add the EC to the device tree and describe the relationship among the type-c ports, orientation switches and the QMP combo PHY. Signed-off-by: Pengyu Luo --- .../boot/dts/qcom/sc8280xp-huawei-gaokun3.dts | 139 ++++++++++++++++++ 1 file changed, 139 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts b/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts index 09b95f89e..ff5db8f63 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts @@ -28,6 +28,7 @@ / { aliases { i2c4 = &i2c4; + i2c15 = &i2c15; serial1 = &uart2; }; @@ -216,6 +217,40 @@ map1 { }; }; + usb0-sbu-mux { + compatible = "pericom,pi3usb102", "gpio-sbu-mux"; + + select-gpios = <&tlmm 164 GPIO_ACTIVE_HIGH>; + + pinctrl-0 = <&usb0_sbu_default>; + pinctrl-names = "default"; + + orientation-switch; + + port { + usb0_sbu_mux: endpoint { + remote-endpoint = <&ucsi0_sbu>; + }; + }; + }; + + usb1-sbu-mux { + compatible = "pericom,pi3usb102", "gpio-sbu-mux"; + + select-gpios = <&tlmm 47 GPIO_ACTIVE_HIGH>; + + pinctrl-0 = <&usb1_sbu_default>; + pinctrl-names = "default"; + + orientation-switch; + + port { + usb1_sbu_mux: endpoint { + remote-endpoint = <&ucsi1_sbu>; + }; + }; + }; + wcn6855-pmu { compatible = "qcom,wcn6855-pmu"; @@ -584,6 +619,81 @@ touchscreen@4f { }; +&i2c15 { + clock-frequency = <400000>; + + pinctrl-0 = <&i2c15_default>; + pinctrl-names = "default"; + + status = "okay"; + + embedded-controller@38 { + compatible = "huawei,gaokun3", "huawei,gaokun-ec"; + reg = <0x38>; + + interrupts-extended = <&tlmm 107 IRQ_TYPE_LEVEL_LOW>; + + #address-cells = <1>; + #size-cells = <0>; + + connector@0 { + compatible = "usb-c-connector"; + reg = <0>; + power-role = "dual"; + data-role = "dual"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + ucsi0_ss_in: endpoint { + remote-endpoint = <&usb_0_qmpphy_out>; + }; + }; + + port@1 { + reg = <1>; + + ucsi0_sbu: endpoint { + remote-endpoint = <&usb0_sbu_mux>; + }; + }; + }; + }; + + connector@1 { + compatible = "usb-c-connector"; + reg = <1>; + power-role = "dual"; + data-role = "dual"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + ucsi1_ss_in: endpoint { + remote-endpoint = <&usb_1_qmpphy_out>; + }; + }; + + port@1 { + reg = <1>; + + ucsi1_sbu: endpoint { + remote-endpoint = <&usb1_sbu_mux>; + }; + }; + }; + }; + }; +}; + &mdss0 { status = "okay"; }; @@ -1025,6 +1135,10 @@ &usb_0_qmpphy_dp_in { remote-endpoint = <&mdss0_dp0_out>; }; +&usb_0_qmpphy_out { + remote-endpoint = <&ucsi0_ss_in>; +}; + &usb_1 { status = "okay"; }; @@ -1054,6 +1168,10 @@ &usb_1_qmpphy_dp_in { remote-endpoint = <&mdss0_dp1_out>; }; +&usb_1_qmpphy_out { + remote-endpoint = <&ucsi1_ss_in>; +}; + &usb_2 { status = "okay"; }; @@ -1177,6 +1295,13 @@ i2c4_default: i2c4-default-state { bias-disable; }; + i2c15_default: i2c15-default-state { + pins = "gpio36", "gpio37"; + function = "qup15"; + drive-strength = <2>; + bias-pull-up; + }; + mode_pin_active: mode-pin-state { pins = "gpio26"; function = "gpio"; @@ -1301,6 +1426,20 @@ tx-pins { }; }; + usb0_sbu_default: usb0-sbu-state { + pins = "gpio164"; + function = "gpio"; + drive-strength = <16>; + bias-disable; + }; + + usb1_sbu_default: usb1-sbu-state { + pins = "gpio47"; + function = "gpio"; + drive-strength = <16>; + bias-disable; + }; + wcd_default: wcd-default-state { reset-pins { pins = "gpio106";