From nobody Mon Feb 9 03:00:15 2026 Received: from PNYPR01CU001.outbound.protection.outlook.com (mail-centralindiaazon11020136.outbound.protection.outlook.com [52.101.225.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4C6D81CDFCE; Mon, 16 Dec 2024 06:31:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.225.136 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734330697; cv=fail; b=J1hY+DDJxlaF/ljteGxn2vDQes/QSgf4RbxwdhWItXrGXRJMJrlegHNUMKyA1RbsWz2uJ9aiue/rxmHx54eCHDDLc6zcsEZXJwzpf43ZRuETwin3D9c2OLHzn/v/qIwCxQT63VbOIywjJTzTSoApQmCdPQf7Hx3w6m6YWQ18QDk= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734330697; c=relaxed/simple; bh=2sZIu2wSK/jV0Q6WnuQbc11QqFn4dJXmYh+fs02ZJ8Y=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=LqtDZFS4prZfZdaQJQNE0/w9tOOsQWIblCsuzUj3l8yL5WJ2eR6OPg5mO55G87veHUU070LBzMe4qrpXLfTz4PnSbjBTqJX6ig3ngVCfQeA+sKEoNUa6Uj9HAcd8xCjedIbTfgmpSt90MEagq4y2MyzyFGqA9dv03VsOzrfipMc= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=siliconsignals.io; spf=pass smtp.mailfrom=siliconsignals.io; arc=fail smtp.client-ip=52.101.225.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=siliconsignals.io Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=siliconsignals.io ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Yzzzm0hFScD1rQs53o96LK3nkgihvWC+CEROwZpa7Y8Ai4n1Fr0uNue/8BonE7MDhJABuFh9kmEBOLnYBAwL16l9xXQrvJfM/oZoMbjBvI/X66PfKpE6AWD339kzMKpNbD+vZZNmYePESJdfr8+gpsP3r7oONEIqEUQxaH/C04XBhpGwxgUYMHHWhlA4pDej+qHS4prYGSIVfyP4vzs8U9PtUNugVxjjlY/SB11XI3bIrz6E4MANg/ayW8AiNEhoaVc5QpwdixV835Bk3LrFKk6ImRHEZFSIBZfN3IBBddHkkkHmnixfERRH8jrn/WCIeYgLUDsn8gU0v8TZaL12QQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=qm85JErofHNZMfKRIe5qRisrz1HzeP7xttjqfiZc1y4=; b=am5DkWWKwl3OCaKihyy4htwClip1ueQrq9UXYYEEyNIrkUJYCLr9wIArRGzozWpZ+ww9tVErT/2t7OCQH1HDMGJz6+Wud+IJ6DVDv2dS/q5CpwjoFD0aZGf5pTh9V0uSytKS9fDv2WMWPSHoQZFIHad9yx9ITJXhclsNLZLNk91/q90LbVMOjePtxkpyg3qzxgi2phuxzEqcwDq7a9xUdkpQA0TyAVkC05YPmwb/+m6z18iCh9CzjnZ/YvGviWnWtNTB0VVdm1OMslEo+euHZfN7yOTii28D+/JaBPHEBLEaDe95Tq75b0t6nRQ+hN/2u95EmNleNlxObllHWXtVRA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=siliconsignals.io; dmarc=pass action=none header.from=siliconsignals.io; dkim=pass header.d=siliconsignals.io; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=siliconsignals.io; Received: from PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM (2603:1096:c04:1::15d) by PN3P287MB2154.INDP287.PROD.OUTLOOK.COM (2603:1096:c01:1d4::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8251.21; Mon, 16 Dec 2024 06:31:31 +0000 Received: from PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM ([fe80::740f:ab98:2be1:538]) by PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM ([fe80::740f:ab98:2be1:538%4]) with mapi id 15.20.8251.015; Mon, 16 Dec 2024 06:31:31 +0000 From: Bhavin Sharma To: sre@kernel.org Cc: Bhavin Sharma , Hardevsinh Palaniya , Krzysztof Kozlowski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v10 1/2] dt-bindings: power: supply: Add STC3117 Fuel Gauge Date: Mon, 16 Dec 2024 11:59:16 +0530 Message-Id: <20241216062920.7228-2-bhavin.sharma@siliconsignals.io> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241216062920.7228-1-bhavin.sharma@siliconsignals.io> References: <20241216062920.7228-1-bhavin.sharma@siliconsignals.io> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: PN3PR01CA0150.INDPRD01.PROD.OUTLOOK.COM (2603:1096:c01:c8::8) To PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM (2603:1096:c04:1::15d) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PN2PPFF679F9759:EE_|PN3P287MB2154:EE_ X-MS-Office365-Filtering-Correlation-Id: 9383c74f-30eb-4b89-b3d4-08dd1d9b476e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|52116014|366016|38350700014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?/wK1dZLkmLnvaZejqCvdNRiLAPSKTfdkc6uzM54+FeTqh/Col+YnYFKMcKnK?= =?us-ascii?Q?wtL97PwQA22rFbRoVn0RCfxEGDd7sWlFOL/RH/2yqCnuNrkfbzYGmg4HpxxK?= =?us-ascii?Q?JslsjRHvMcW6bmIWrAzkOUXzEtwwZlfjjQ7fqtjzFnJFj4RxUidAIJI+6Rwr?= =?us-ascii?Q?laiDkLyIHOuH6eYvf/+HtFdAX2xa0+1DRD6DGyEXZzBYqvkX+RG5nxR3pi+j?= =?us-ascii?Q?2HuTRqfEynLRQYLiQFzU3Fh8qIci5Us30+f7g37xCtsp7WffnYJuE81UDzTT?= =?us-ascii?Q?5/Kuih3SZ680pe682XxQeJf4YCACHTQM1ZhEFbGk3KLkqFzNqFZKlGcNJOVe?= =?us-ascii?Q?V9qv5JQFFeVqyNihywDlB794DyVdRi5n5Y51cck3TSa6A2OVJQiUpGpvqcZH?= =?us-ascii?Q?fhBj1cziHOfjw1U6XSW3T8uSKtqGYYVfG5YfuQb0l5oJGfnuYBoI5EjXbC9t?= =?us-ascii?Q?3Cs7yEl2lWk10mnydL854xpZ8FWJaPRpqEhBRfwG+smi9ShoWo8FVSi/+MLd?= =?us-ascii?Q?dTfXA3NneX8KbPD4ao/jOEq7aVCofBC8mhY38i418nGeRLomcjn6fzsl5Ghc?= =?us-ascii?Q?NkeMbWqVVudxmfW5VIYYQ/OQZdPGB4Ibb8XEt7unUXhdQcUrOUyY7sGuuOUM?= =?us-ascii?Q?23QZx5BISt0X7OiAC7lgYTApvWGf8hpO7lc2VTGxUq8ZDeToOsmvs8VYqKC6?= =?us-ascii?Q?V7nzTnlo38wKP5CZxxmEkbOwRqIzOgdQ61T86MJFQOF0PG3OSw538fg9FXYw?= =?us-ascii?Q?cJumwxvFPLQ1kQbhzGmC9IeaouY9oSIqRpkSp0SQYMymABopZL0sOxKpu36z?= =?us-ascii?Q?MX39c1FiM+prxB3649cti57QNnSXh/GW1kam3Fxopzlx1yJEBCPU9xfnwk9w?= =?us-ascii?Q?F47Qt5VayzJG77znkJARveTAxPCDMqn4QSU3vFd4jMKNSSJ/7KChlGf9FtGd?= =?us-ascii?Q?Amo7WmciiMM8Gxs3CGXiEXM1aIfHT6ZRj+uLVD2Yef5VLxIbYm/opft75Vxl?= =?us-ascii?Q?Gkw6WH5JIUtj8JTsirCeUfs46OWCav5OguOBG18HossJsvUMEpqm6+t2/slJ?= =?us-ascii?Q?Rzir4BosGWZg4k8tPhZp555Vv4hkLP+qDyXga30FuDXxcC20JMwhWhinSnCm?= =?us-ascii?Q?Lix/hdna1R5PGeuDsSaOCuhhNgCHpNT1bFdoKTZGvaZDXtr3nQU8rXLr+OKD?= =?us-ascii?Q?YBG9ljX7ZKp5fTJ+btjRdqpBrp+XUJBfqkBGWhJMqYJVCcdWO23zeO1HwZNN?= =?us-ascii?Q?kNBD51CBxwoZAtA7Hup90FFg2N12OtpBaGJKWTePA7lpCS2mqgvQ+53+nD/M?= =?us-ascii?Q?zspfG842rzb1URJzUYNcldjVHbiWvDeZgoZTnCLJEB/b4OMJVn3e4DAREA3c?= =?us-ascii?Q?ZWlr43Smh8J0NPSsRh+Phsu2ZfRP?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230040)(376014)(1800799024)(52116014)(366016)(38350700014);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?Kp3ZrNkuCkGVdP4LiLMYYObnZgEir8BznTaGH5HnYQ5d24ZLmBvr3rGU986A?= =?us-ascii?Q?bXYRbIGz3Pf4qTGqX0SExv2hwc1LJhJqXdzrRXiPmxHM9mOv0WXf4dc3ZWPm?= =?us-ascii?Q?mKouVYeC1LE162om2fGGIRVaAvNcK8rBr9iySIO/7V9hRlBEdbCFp7Sb/Wkw?= =?us-ascii?Q?0CS2CD7OLU6k3RPiaONtkZpl/mzCWLwSFLrMJj/OqZamN59+5R6sU4IszsHE?= =?us-ascii?Q?FCaZcq3NH6ZqVgWrM2t40VM/HpJGh/BKdrtJiFss0lolWfzHjUUZx3JVnO9c?= =?us-ascii?Q?dV1jpuevFiFqPzeaxZ3Vz3m47oyyOjT1SwbzfB8KjO1GsBY6MdHyACwIhfMJ?= =?us-ascii?Q?NJ0R4krOYK1QrbPsUbXM3FV5cjRZ1hmhSkT3I+QvNmrJUA1kSQT8Cc5yZ0d2?= =?us-ascii?Q?cew9OaP/K4iFSR5X8QWR9n8qHQLYcTYakyyCsiH3TtfrHeIE95U4t3OcUUze?= =?us-ascii?Q?7hWNplYsRn49KgzUOx80FGx8tv9AiYddXtxHnkedZ2L+UTWMe2/WqH02PDzP?= =?us-ascii?Q?svCdvyj4VTAwHYNsIjr4jI/f0qsXdMDg05ZIzf8Dx0HmRISnpmcsO9adjp+X?= =?us-ascii?Q?01NrXCkdDaRBBYml+ZR20efb4bbJzIM9+iqC2xEzmKa5KBmETiwuIiBeV0Tg?= =?us-ascii?Q?wY96G2IAqMjPyABY9/Fj9m4mYzyfcZZgQCcGl7zW+tk6h/mvx7RKxywR3Bcj?= =?us-ascii?Q?HuIHT1szPXAKJIassP9ffAGzKkHtMYQIbZ88ysFxOnZpDeGBV5pJ3ZsZ5PVX?= =?us-ascii?Q?mwjRi1y3FgokjYn7wo54cZwsBKikIgu95ijcTfHz/ymq5Ci9604km2FRvDbe?= =?us-ascii?Q?aELhAjxW6naE/O85haPHDAEuIiwfzeZYi5DvEuaJ+GWmmtDkYsTqepvlNwwf?= =?us-ascii?Q?s6Pmb0FXqRXJrJkaMvDroUbkXYpYPU+5V18FicuXft+IBfFg1NigypFB8qA6?= =?us-ascii?Q?6birabukPZABinme4gSh8EXMh4QbCZIpFVp3VhyR3ANLvJ7AFs+Ah/eTo0BF?= =?us-ascii?Q?uhWLa/oEantIp2P73GcLSSUdlIeubFFaj1Wrln7uoIwJa3wVbHHSFgUECm80?= =?us-ascii?Q?Bl3cNTDG9zVBoc8pdX3Pw06JvYhhxcmgovswByPb9nGXgLuLiknit5GmNrgm?= =?us-ascii?Q?2c6uFi11l7jjrNBklhOFEhs6OkhnhdrqsjJA4E4YEr5yuk2f8L6K/YW0mNpw?= =?us-ascii?Q?x0pZyr+wzQZ+OdmvNdnWQJ8zdKhUDOel2/qZtjTirxUiYGzBZBvXY18972EV?= =?us-ascii?Q?ODxsbMrCLBYAf4V7sVXqokdoW1lWeVb/Buni2dOuoP96YPbNx/L3Wq1MUI/n?= =?us-ascii?Q?qy2OuI9lAh9yjg9R4HGSb2Jy/mrVkDHJhER3zIi0/LuLgqbrpjG70aZCePft?= =?us-ascii?Q?8zvG+N6Ruios7Uza/UIFih3OcqatXEn/ZhwbEFaVhG5BrrllvPHjSirsBqoz?= =?us-ascii?Q?xzSkJ68jl3KslilzYGEl85BF8GgRGbtNbAzILOf2uMCSepxAIzkIf3Fr2Szu?= =?us-ascii?Q?uRJmeYsD3pa7GIabic1s8F/tYm4MA0Y+BMaA3iRu9N3WmeotDJWTz3wqa6Oj?= =?us-ascii?Q?491Tq+dufjEjuE561I4LxAcnIMJB0Ivc5utmBYfA7KQzsBdFoNwM20pIeM7j?= =?us-ascii?Q?bYJRA5B2ZlMc/r3VJKao8y4=3D?= X-OriginatorOrg: siliconsignals.io X-MS-Exchange-CrossTenant-Network-Message-Id: 9383c74f-30eb-4b89-b3d4-08dd1d9b476e X-MS-Exchange-CrossTenant-AuthSource: PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2024 06:31:31.3382 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 7ec5089e-a433-4bd1-a638-82ee62e21d37 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: b89WtSuWG2ljuHBOpOu3+qipq5RyX3yD3Y9NvDBZlpuvfbUcEshmLl+ldhONMUD0wIovQ1O95HmYiPbWgSnHmQqbtWUm6Ke0f1m+6jSdTC8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PN3P287MB2154 Content-Type: text/plain; charset="utf-8" The STC3117 provides a simple fuel gauge via I2C. Add a DT schema to describe how to set it up in the device tree. Signed-off-by: Hardevsinh Palaniya Signed-off-by: Bhavin Sharma Reviewed-by: Krzysztof Kozlowski --- .../bindings/power/supply/st,stc3117.yaml | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/st,stc31= 17.yaml diff --git a/Documentation/devicetree/bindings/power/supply/st,stc3117.yaml= b/Documentation/devicetree/bindings/power/supply/st,stc3117.yaml new file mode 100644 index 000000000000..e486131a27a9 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/st,stc3117.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/st,stc3117.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics STC3117 Fuel Gauge Unit Power Supply + +maintainers: + - Hardevsinh Palaniya + - Bhavin Sharma + +description: | + The STC3117 includes the STMicroelectronics OptimGauge algorithm. + It provides accurate battery state-of-charge (SOC) monitoring, tracks + battery parameter changes with operation conditions, temperature, + and aging, and allows the application to get a battery state-of-health + (SOH) indication. + + An alarm output signals low SOC or low voltage conditions and also + indicates fault conditions like a missing or swapped battery. + + Datasheet is available at + https://www.st.com/resource/en/datasheet/stc3117.pdf + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + enum: + - st,stc3117 + + reg: + maxItems: 1 + + monitored-battery: + description: | + The fuel gauge uses the following battery properties: + - charge-full-design-microamp-hours + - voltage-min-design-microvolt + - voltage-max-design-microvolt + + shunt-resistor-micro-ohms: + description: Current sense resistor + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - monitored-battery + - shunt-resistor-micro-ohms + +unevaluatedProperties: false + +examples: + - | + #include + + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + battery@70 { + compatible =3D "st,stc3117"; + reg =3D <0x70>; + interrupt-parent =3D <&gpio0>; + interrupts =3D <31 IRQ_TYPE_LEVEL_LOW>; + monitored-battery =3D <&bat>; + shunt-resistor-micro-ohms =3D <10000>; + }; + }; --=20 2.34.1 From nobody Mon Feb 9 03:00:15 2026 Received: from PNYPR01CU001.outbound.protection.outlook.com (mail-centralindiaazon11020136.outbound.protection.outlook.com [52.101.225.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E43B1CEAC2; Mon, 16 Dec 2024 06:31:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.225.136 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734330699; cv=fail; b=rgwJ5p89R8YmFaI1tQLBMatHZIYrr4MENXpP0TqBQJo+BzPrwLsFdcwjx5IwTDdbJCQIRN9+JmZwDKJ1f5BS1kEGC0j2RfBn7n/IbW1gwednpQNe3KzCvuFBZjUjbksFIuFtp0j9cnlfae4ZO6udY+cKJGR3ipIYUtfbUkAz4d0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734330699; c=relaxed/simple; bh=vC1imlSSJ9E87XmREUNZgeqAbrRknqz6UgCT/WwbLNw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=CxW/6G1OfqAjJUmludueDgtWH1OE0qhKuJ9OOLGxFdmbbbaqs/M7E8SS7ciRFm7rQf4zi/GdyGOsR9YSdoVJM1n5u9yZHL4/s/lYEl7L3TWlnFHyxyp3+GPumOHncxG/3oOrSknqXctJF60R15jNC/zz976jQHABN+7CXEGJfIM= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=siliconsignals.io; spf=pass smtp.mailfrom=siliconsignals.io; arc=fail smtp.client-ip=52.101.225.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=siliconsignals.io Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=siliconsignals.io ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=f3amEoKviiMNSQ4XVRIFCFiqdDRv5B7XlF/dMCJ0/ObwDZ4w0dbFn0D3wACAJxjy4S0wcch2CHzSx393TBWnhwGMMzyh+NQp9hcfVxTAk6RRfE2AGytr0zA+mk/HvJCWO1lRFzZWG3fYw6px9CyR1BupeTZkjK5+Dmv4F+YWHYO/8kFsP1LYP11kI8NsbI5At/N7Xe/NDMIObXF45dZOxdg48zLpi8aTJWMECG3N1vpquETMArk26mYYSOEnwzaaYrzKDg5+hBdh2C2CUpfy24zIHj4IFiMA6RTli3IjLEEWEhOyLeN21Q0pHUBmQGsElmZi1EmBECCzY0+S/wRyEQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=Hb8pYtOrssA3AN0thHgei6CHzNFOgoqW7893aMsvtGs=; b=BRUPCYfzU9GacTXW+VGW+czgawtoFoROJ4Bd4Dssz6W2iqW6l8j3oNCrn+cvwyZcGJSObeyIXYOibb82p8dkd3ykNHSQJGY3jW7UJzR/feGHMruJLTDilVskIgclZA05v5Id17fLCyy2UEVk20Wi3Ca7VIfcRFJm8ZidVbqm0HPOjSDbi9VgTx6469HDXxOS97Pp6V6PoMCPcOuEa9MfwsJ2Lj7LAQXMFsC2MoKysy+8DC7f1pbYpTH0BKX4UNb466bgmsx7XPuQztkH9dvN0HOSFd4ohRhn8CSIusAPYufrWjEC9YEkZGcba7XEzmKkZzTdDuwMbUws0kCZBa/9Zg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=siliconsignals.io; dmarc=pass action=none header.from=siliconsignals.io; dkim=pass header.d=siliconsignals.io; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=siliconsignals.io; Received: from PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM (2603:1096:c04:1::15d) by PN3P287MB2154.INDP287.PROD.OUTLOOK.COM (2603:1096:c01:1d4::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8251.21; Mon, 16 Dec 2024 06:31:36 +0000 Received: from PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM ([fe80::740f:ab98:2be1:538]) by PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM ([fe80::740f:ab98:2be1:538%4]) with mapi id 15.20.8251.015; Mon, 16 Dec 2024 06:31:36 +0000 From: Bhavin Sharma To: sre@kernel.org Cc: Bhavin Sharma , Hardevsinh Palaniya , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v10 2/2] power: supply: Add STC3117 fuel gauge unit driver Date: Mon, 16 Dec 2024 11:59:17 +0530 Message-Id: <20241216062920.7228-3-bhavin.sharma@siliconsignals.io> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241216062920.7228-1-bhavin.sharma@siliconsignals.io> References: <20241216062920.7228-1-bhavin.sharma@siliconsignals.io> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: PN3PR01CA0150.INDPRD01.PROD.OUTLOOK.COM (2603:1096:c01:c8::8) To PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM (2603:1096:c04:1::15d) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PN2PPFF679F9759:EE_|PN3P287MB2154:EE_ X-MS-Office365-Filtering-Correlation-Id: 17604d8b-b608-43cd-9bec-08dd1d9b4a6e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|52116014|366016|38350700014; X-Microsoft-Antispam-Message-Info: =?utf-8?B?YitLbDdIZ2pBRG9aRlQ4N2xBTjhCQ2JGVFlxL1RxYitKcGVHcGJvaVRIdWRy?= =?utf-8?B?b1lJc2JZQ2FoMUltWHhxL0VYSXJRYzh4V0tQNW1CVm95UlgwMldscFBMQkhU?= =?utf-8?B?bFVMc3YrNkpldFVWdWxjQlp3RjJ4Z3V0NE82dnQwRk15ajdzaWJTTitHZDMr?= =?utf-8?B?clc5V0xlMmZZVUM5bzlGNEVpNmxGNTNRa2FmMUZmUHpOTWJCUGMxZG0wMzYx?= =?utf-8?B?WHdnWDZCazRNTFpMT3FiU25vbk1oa0traWJWcjNyVFBTdXFvV2h5Q3haZVNK?= =?utf-8?B?TWhRdVYxUnk1akttMnlkek9PMEJyUHliWVZxR0JUOVJuYi9tNmZzMjg3VGtO?= =?utf-8?B?VWUrQlMvSkt0elZCSDBOdnVSYlNJL1ZhNDlONkVtSFUrZlV1b1dNWk5NamtV?= =?utf-8?B?UUxtT0Fqdi81dGE0dnVYdkVvd013QXMycG5WUmxrSmRaK1FURGJLK05rSkpv?= =?utf-8?B?NlZBQmpnUy9qQ3lkcWh2NmlHRXZQRXVIY1ZyYWdBT0JIaHRQZ0VUM1pQVks1?= =?utf-8?B?VmpXZ0pWSnRmWmp2UTk5QUlDZjZLdk53OVNBTTZwQk50MFlYQkhZb3pGZUdX?= =?utf-8?B?STQrL1dNZnhFN1R3MzVIMHVjNWZFN1UzVWNwSlNCdDk3NHJQaVBNM2grY1A1?= =?utf-8?B?cjJTclVqeFA4RGpVdXA1cEd3UjRTeUMvdER5elNaRUtzRXZpbGw2eWphK3Yr?= =?utf-8?B?R1ZERk1NSzJld1lHcU50enpqQ01wTHdWUk1naFNCQjN4NXBmQ0RLQVdYQmZB?= =?utf-8?B?TDYyZjNZVWtaNHRnWGNDZVU1bHJGQTN4dG55OWpONkdYeE5VMGFHakZXejU5?= =?utf-8?B?bTJoaEJkVU5TZWlQY3BKTGNVVU92c0I4VGZSbkRUdHBmc2sxZE9xVEhHVmVE?= =?utf-8?B?MmZuV2gyM002VVV2ZHQyMFk2SEVUK09rbGVRVzRBeUxlVVZqVnNVaXViQXo4?= =?utf-8?B?Y1hWSGtWK0VvS2RmU1dnbWZkd0piZ3dzT0hXOXMwT0RsUFFkcTY3VmEvMk44?= =?utf-8?B?K1p3cjJudmNiRUhKNVkrZjROY2EwL2QrUGMzeXc5Sy9hdmxaVzEvSUVhc1lD?= =?utf-8?B?UnNSNWdSa3NDaWtwQWJrZjZZU1FRaW9kVU5LbHlXa09VTEhKT2I4T1NQNkhB?= =?utf-8?B?cVZnS1R3WU9CNU5sN01kQnkyTEIxL1lXMnZyZXRIMUt2OUJPcW1qM1FUT0xO?= =?utf-8?B?UVU2SGRna3FBM2NzQnlDak14a1grK2RPNFFOL0V1WFFCWE9GV1lzMFcyVmpM?= =?utf-8?B?c0dLbStzNE1sellUS2FFNVBFY1lFNDNGNHR6bWEwNlpZZlJadEV4Q09PeEpv?= =?utf-8?B?aTZGcnlINVdIZ1JqSTdZQVdHSlBrRmFIVG1YT2NXU2VOTFR2Y01sSnUvNk9m?= =?utf-8?B?WnNYR3ZmSTY4UUJqSXYyaktxMnU5VkQ3SXEzMEd4TXR6c2pybEpidkE5cko5?= =?utf-8?B?cmcxTWl6UlM1QXJOaEd4bENBRkszUmVva3N0b0JnbjFFZFZpdkZKU0lZQXc5?= =?utf-8?B?ZGcrU3ZBb1FraGIxNkhEakFjTHphSVZCRlNBeHMramFGSWhmbERIdDY5bmlM?= =?utf-8?B?ZTVxNmJmZTFNdG4ydEpOZm16bDRIYjVzRURoTDR3ci8ySVRHNFZ6c1dwWUpl?= =?utf-8?B?K284V0UxeHd1Zzg1cm9Ra01LeHdST2pIL2JtNnh1aTkyYmpIVmdHa3REOEJ5?= =?utf-8?B?UC8xbG8xcjF1aHBvV1hrNUNVZUpDZDdJQXlwS0NKb0hNU1d6V2RjVGJ4QVB3?= =?utf-8?B?cUowbzBPU0o4TVFwbjVTbG5UNFBVak1UcjVqUWpTeFBhU2NSb0llZHU1WUVN?= =?utf-8?B?QStrak5qVnp1YytES0R1SkxTYnlmb0xyTU9pU1VSQmwwbitBbW5kUnozQ1U4?= =?utf-8?B?Y2JieWtnR2FGYkxBRmZtRDdnb3FrVExFSm91UEYyVmZ5VFIxL0ZLbjNVVHF1?= =?utf-8?Q?aOfEHC2On0ORDsGpdw9UGdtk9Vm5xKgF?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230040)(376014)(1800799024)(52116014)(366016)(38350700014);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?RmZ0ZWxsWFRYYkpuN2l4akUweUF0MHRCMjdwcitlZ0dZZ3BsZ2lUSnk1WVNv?= =?utf-8?B?bm9ya2ZWay9oSkI4bWt5dzFOd0ZXazg0eGpOMWY4MEU3Qzh4cFZDOWVHN293?= =?utf-8?B?T0FQVDRyazl2Y20wdHlmd0RyU09oVUIzbGJuVGhIR290TXNsOC9lOEVlOFZB?= =?utf-8?B?bU1tV0hIRzJqVE9tR3F1RE9lWGZ2NTRJbFN1V1BmdkRxZjBONkgwYk9ueFVZ?= =?utf-8?B?UDBrdlBrTVdTUzllR2hIQUtTQVdGcmNhMHZhUDMveWp3YTBCMFFTWGIxMUpM?= =?utf-8?B?b1RsT0FBTmRUazU0R2V4blZiZjVDZm5tdTdlWU9Dc2pRTmpMakpDTWpESFZC?= =?utf-8?B?K0NCVjlkMUxCN2h2NVNFbUhqZUJBY09BM2d3WHQ5cDNaQTlnMW1mNkIveFNo?= =?utf-8?B?SXZ1dlFxY3RjS0h6eFhhVVdDWitsNHlESWlxeXlldDJsaGRuYzVYV0oxcnBh?= =?utf-8?B?ODRsOHNEL1VlT2NoUG5tSmJGSXI3ajVVcVpLNE9LUXo3L2FCNVpxS2lVWUJi?= =?utf-8?B?OFJUR0FBb2FYcG9MRVI2M25WcGpkMFlRaEdKVSt2UXFsMDEvRVhCUVZJOXZ0?= =?utf-8?B?aDNZcWI5Z1BVcUx6Qys3WEZMQzRvbUJWeURRemg2M3hJMkhPdDFHUXlGbnhi?= =?utf-8?B?b0JxZlkrUkdCdHhsOWNrT1A5SVhnZEdzVWlJb1BOWHRjaXlHMkx6MCtPbTkw?= =?utf-8?B?a0VxVVp2dEVTNHUwaUN6YW14N1RIc0s2QW9lNkdGWXhOVllCeEJ3VVE2ZDE3?= =?utf-8?B?bjhvb2JYZkt2NUF1a3VybHZoeHlGTmhVdG1JYXNRYkFXVnY1UjgrSW1LMjQx?= =?utf-8?B?TE8zZk1uUHFhNmEzeEZhcm9STHBvWitYcElTR05TS2RuVU51RFRCWHpmVk5F?= =?utf-8?B?UmNzaVJpZHJaM2NmRHdSN3FnOXordkJKblo2V1lxMTBEQ2pvZ211aUxGREYx?= =?utf-8?B?ekE2dWNQV3RVQjI3ZVNaYWh2YVFzK0dGRW9iWklUclVndHJrR2I2MFdnME1N?= =?utf-8?B?ZVV0c3gyS09HT0YwM3Bwam1jZVNUTmhLcUIrLzRpQkx3NGU2ZEU2SGpjVlF0?= =?utf-8?B?VVZ3VWYyc0ROci9tb3p5bVgwK09IaWlSclNGOTJiaHdnNitrK3ZxU3hXVmRl?= =?utf-8?B?V2ozMWdMbjAzWUZkeUcxRDN4eUU2OUdvOXVIS0l0WlN6R00veVZvdFRSK1ZY?= =?utf-8?B?MHJzZWVjQlY1aXMrVWlSYysycmZTMHBLTmNNNmZLRUorMTNZR0lJT0ZaMnEv?= =?utf-8?B?SFE3VEs3K1VGajl5cDdvZysvYTMrTDRuVEorVHhlaU0zUlBZNmliYUFaYjdJ?= =?utf-8?B?ZE5NeUc0M3lYZGVOV3BWMjRvNkowWlBpQ2hiVHQ3SGJZQVFjWVVjUDM1ZCta?= =?utf-8?B?anpEM25HTjR1NkNFSTdFQlFLRE9KT0NCOHhSZHV6UlRrbVVocUlxak1ocWNB?= =?utf-8?B?NTJ3eWJvcUFwT1F3OTJOTlVualdhNUxxdkp1NVg2TVdReW91VXNCNjZNdVVP?= =?utf-8?B?S1lXYmpvYWRmcnBjREI0Um1iRHdDWHlPeVdlb09wQUZLRThZVnRXWmZHUS9S?= =?utf-8?B?TG5Fc09NRDZ6bHpyczM3ZWFkMEZ3THUvT3pGaElVQjJQMzU4L3pmaUMrRjFV?= =?utf-8?B?MTUxa2dJYXdmYm5WandxNXFDMm5IbHpMQllYYzlOTUdGdHlmaDJIbFppUUdC?= =?utf-8?B?bk9sKy9EcGFSSG56Ritpc3ZZNVFFUGk2NGJhellLZ3FBZVZSdUQyRENUS0hL?= =?utf-8?B?WjdadDlxcTd3SHp0cjltdFM1NDFBeXN5d0sxQ1dBS2h2WDQ3TWt1bXQ2QmFk?= =?utf-8?B?VXE2Z2lsLzZhamFiRTMwam92T3RlQWNPcDRPaXRwMUNyYnMrV2xIRkJNQUlG?= =?utf-8?B?b2ZvcmVXR0I5SzQ3V1VrbzBoMUZpdEdPb2ZrSEVwRzZyTkgyMkphYjBvVUk5?= =?utf-8?B?VlVLU3VMK0E5TVFFNFVjK3dveGxBSWkxYTdKSnk3YXVDRFZDZnZkUjV6b1N6?= =?utf-8?B?R2lqSHlCY2FoZTR2ME1uWi9YTm0vempYb2pSTnhvSTAzc2VkQTJkQnp2L0dL?= =?utf-8?B?SEMxMFVRV2JKUXlIWlBkeFR2bmpkdkNmUmg0M1l5T3dLSUxUb0Y4SDgzSVFu?= =?utf-8?B?c2ZCdWhEajRpREJBNnpLMWJ4TkcwcncxMTZjRmZMaW9EWUwvbmVPaHlkWHBa?= =?utf-8?Q?wS6XRsDLXUVpYGv0TU07V4o=3D?= X-OriginatorOrg: siliconsignals.io X-MS-Exchange-CrossTenant-Network-Message-Id: 17604d8b-b608-43cd-9bec-08dd1d9b4a6e X-MS-Exchange-CrossTenant-AuthSource: PN2PPFF679F9759.INDP287.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2024 06:31:36.3901 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 7ec5089e-a433-4bd1-a638-82ee62e21d37 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: r9xm0xI21cZ0WIauga+LIn7+ZnuEpobTOlglAYCk+iqH+5e8GofOjEHhv03/BqGqT8NCAow615y4n7V1Wjqu65uiph49vhaTalwJoZWSFuo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PN3P287MB2154 Adds initial support for the STC3117 fuel gauge. The driver provides functionality to monitor key parameters including: - Voltage - Current - State of Charge (SOC) - Temperature - Status Co-developed-by: Hardevsinh Palaniya Signed-off-by: Bhavin Sharma --- MAINTAINERS | 8 + drivers/power/supply/Kconfig | 7 + drivers/power/supply/Makefile | 1 + drivers/power/supply/stc3117_fuel_gauge.c | 608 ++++++++++++++++++++++ 4 files changed, 624 insertions(+) create mode 100644 drivers/power/supply/stc3117_fuel_gauge.c diff --git a/MAINTAINERS b/MAINTAINERS index 17daa9ee9384..85e29690b9fe 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22168,6 +22168,14 @@ T: git git://linuxtv.org/media.git F: Documentation/devicetree/bindings/media/i2c/st,st-mipid02.yaml F: drivers/media/i2c/st-mipid02.c =20 +ST STC3117 FUEL GAUGE DRIVER +M: Hardevsinh Palaniya +M: Bhavin Sharma +L: linux-pm@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/power/supply/st,stc3117.yaml +F: drivers/power/supply/stc3117_fuel_gauge.c + ST STM32 FIREWALL M: Gatien Chevallier S: Maintained diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 9f2eef6787f7..0806f00058a4 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -918,6 +918,13 @@ config FUEL_GAUGE_SC27XX Say Y here to enable support for fuel gauge with SC27XX PMIC chips. =20 +config FUEL_GAUGE_STC3117 + tristate "STMicroelectronics STC3117 fuel gauge driver" + depends on I2C + help + Say Y here to enable support for fuel gauge with STC3117 + chip. + config CHARGER_UCS1002 tristate "Microchip UCS1002 USB Port Power Controller" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 59c4a9f40d28..b55cc48a4c86 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -108,6 +108,7 @@ obj-$(CONFIG_CHARGER_CROS_USBPD) +=3D cros_usbpd-charge= r.o obj-$(CONFIG_CHARGER_CROS_PCHG) +=3D cros_peripheral_charger.o obj-$(CONFIG_CHARGER_SC2731) +=3D sc2731_charger.o obj-$(CONFIG_FUEL_GAUGE_SC27XX) +=3D sc27xx_fuel_gauge.o +obj-$(CONFIG_FUEL_GAUGE_STC3117) +=3D stc3117_fuel_gauge.o obj-$(CONFIG_CHARGER_UCS1002) +=3D ucs1002_power.o obj-$(CONFIG_CHARGER_BD99954) +=3D bd99954-charger.o obj-$(CONFIG_CHARGER_WILCO) +=3D wilco-charger.o diff --git a/drivers/power/supply/stc3117_fuel_gauge.c b/drivers/power/supp= ly/stc3117_fuel_gauge.c new file mode 100644 index 000000000000..20e8890b9897 --- /dev/null +++ b/drivers/power/supply/stc3117_fuel_gauge.c @@ -0,0 +1,608 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * stc3117_fuel_gauge.c - STMicroelectronics STC3117 Fuel Gauge Driver + * + * Copyright (c) 2024 Silicon Signals Pvt Ltd. + * Author: Hardevsinh Palaniya + * Bhavin Sharma + */ + +#include +#include +#include +#include +#include +#include + +#define STC3117_ADDR_MODE 0x00 +#define STC3117_ADDR_CTRL 0x01 +#define STC3117_ADDR_SOC_L 0x02 +#define STC3117_ADDR_SOC_H 0x03 +#define STC3117_ADDR_COUNTER_L 0x04 +#define STC3117_ADDR_COUNTER_H 0x05 +#define STC3117_ADDR_CURRENT_L 0x06 +#define STC3117_ADDR_CURRENT_H 0x07 +#define STC3117_ADDR_VOLTAGE_L 0x08 +#define STC3117_ADDR_VOLTAGE_H 0x09 +#define STC3117_ADDR_TEMPERATURE 0x0A +#define STC3117_ADDR_AVG_CURRENT_L 0x0B +#define STC3117_ADDR_AVG_CURRENT_H 0x0C +#define STC3117_ADDR_OCV_L 0x0D +#define STC3117_ADDR_OCV_H 0x0E +#define STC3117_ADDR_CC_CNF_L 0x0F +#define STC3117_ADDR_CC_CNF_H 0x10 +#define STC3117_ADDR_VM_CNF_L 0x11 +#define STC3117_ADDR_VM_CNF_H 0x12 +#define STC3117_ADDR_ALARM_soc 0x13 +#define STC3117_ADDR_ALARM_VOLTAGE 0x14 +#define STC3117_ADDR_ID 0x18 +#define STC3117_ADDR_CC_ADJ_L 0x1B +#define STC3117_ADDR_CC_ADJ_H 0x1C +#define STC3117_ADDR_VM_ADJ_L 0x1D +#define STC3117_ADDR_VM_ADJ_H 0x1E +#define STC3117_ADDR_RAM 0x20 +#define STC3117_ADDR_OCV_TABLE 0x30 +#define STC3117_ADDR_SOC_TABLE 0x30 + +/* Bit mask definition */ +#define STC3117_ID 0x16 +#define STC3117_MIXED_MODE 0x00 +#define STC3117_VMODE BIT(0) +#define STC3117_GG_RUN BIT(4) +#define STC3117_CC_MODE BIT(5) +#define STC3117_BATFAIL BIT(3) +#define STC3117_PORDET BIT(4) +#define STC3117_RAM_SIZE 16 +#define STC3117_OCV_TABLE_SIZE 16 +#define STC3117_RAM_TESTWORD 0x53A9 +#define STC3117_SOFT_RESET 0x11 +#define STC3117_NOMINAL_CAPACITY 2600 + +#define VOLTAGE_LSB_VALUE 9011 +#define CURRENT_LSB_VALUE 24084 +#define APP_CUTOFF_VOLTAGE 2500 +#define MAX_HRSOC 51200 +#define MAX_SOC 1000 +#define CHG_MIN_CURRENT 200 +#define CHG_END_CURRENT 20 +#define APP_MIN_CURRENT (-5) +#define BATTERY_FULL 95 +#define INVALID_TEMPERATURE 250 +#define CRC8_POLYNOMIAL 0x07 +#define CRC8_INIT 0x00 + +DECLARE_CRC8_TABLE(stc3117_crc_table); + +enum stc3117_state { + STC3117_INIT, + STC3117_RUNNING, + STC3117_POWERDN, +}; + +/* Default ocv curve Li-ion battery */ +static const int ocv_value[16] =3D { + 3400, 3582, 3669, 3676, 3699, 3737, 3757, 3774, + 3804, 3844, 3936, 3984, 4028, 4131, 4246, 4320 +}; + +static union stc3117_internal_ram { + u8 ram_bytes[STC3117_RAM_SIZE]; + struct { + u16 testword; /* 0-1 Bytes */ + u16 hrsoc; /* 2-3 Bytes */ + u16 cc_cnf; /* 4-5 Bytes */ + u16 vm_cnf; /* 6-7 Bytes */ + u8 soc; /* 8 Byte */ + u8 state; /* 9 Byte */ + u8 unused[5]; /* 10-14 Bytes */ + u8 crc; /* 15 Byte */ + } reg; +} ram_data; + +struct stc3117_data { + struct i2c_client *client; + struct regmap *regmap; + struct delayed_work update_work; + struct power_supply *battery; + + u8 soc_tab[16]; + int cc_cnf; + int vm_cnf; + int cc_adj; + int vm_adj; + int avg_current; + int avg_voltage; + int batt_current; + int voltage; + int temp; + int soc; + int ocv; + int hrsoc; + int presence; +}; + +struct stc3117_battery_info { + int voltage_min_mv; + int voltage_max_mv; + int battery_capacity_mah; + int sense_resistor; +} battery_info; + +static int stc3117_convert(int value, int factor) +{ + value =3D (value * factor) / 4096; + return value; +} + +static int stc3117_get_battery_data(struct stc3117_data *data) +{ + u8 reg_list[16]; + u8 data_adjust[4]; + int value, mode; + + regmap_bulk_read(data->regmap, STC3117_ADDR_MODE, + reg_list, sizeof(reg_list)); + + /* soc */ + value =3D (reg_list[3] << 8) + reg_list[2]; + data->hrsoc =3D value; + data->soc =3D (value * 10 + 256) / 512; + + /* current in mA*/ + value =3D (reg_list[7] << 8) + reg_list[6]; + data->batt_current =3D stc3117_convert(value, + CURRENT_LSB_VALUE / battery_info.sense_resistor); + + /* voltage in mV */ + value =3D (reg_list[9] << 8) + reg_list[8]; + data->voltage =3D stc3117_convert(value, VOLTAGE_LSB_VALUE); + + /* temp in =C2=B0C */ + data->temp =3D reg_list[10]; + + /* Avg current in mA */ + value =3D (reg_list[12] << 8) + reg_list[11]; + regmap_read(data->regmap, STC3117_ADDR_MODE, &mode); + if (!(mode & STC3117_VMODE)) { + value =3D stc3117_convert(value, + CURRENT_LSB_VALUE / battery_info.sense_resistor); + value =3D value / 4; + } else { + value =3D stc3117_convert(value, 36 * STC3117_NOMINAL_CAPACITY); + } + data->avg_current =3D value; + + /* ocv mV */ + value =3D (reg_list[14] << 8) + reg_list[13]; + value =3D stc3117_convert(value, VOLTAGE_LSB_VALUE); + value =3D (value + 2) / 4; + data->ocv =3D value; + + /* CC & VM adjustment counters */ + regmap_bulk_read(data->regmap, STC3117_ADDR_CC_ADJ_L, + data_adjust, sizeof(data_adjust)); + value =3D (data_adjust[1] << 8) + data_adjust[0]; + data->cc_adj =3D value; + + value =3D (data_adjust[3] << 8) + data_adjust[2]; + data->vm_adj =3D value; + + return 0; +} + +static int ram_write(struct stc3117_data *data) +{ + int ret; + + ret =3D regmap_bulk_write(data->regmap, STC3117_ADDR_RAM, + ram_data.ram_bytes, STC3117_RAM_SIZE); + if (ret) + return ret; + + return 0; +}; + +static int ram_read(struct stc3117_data *data) +{ + int ret; + + ret =3D regmap_bulk_read(data->regmap, STC3117_ADDR_RAM, + ram_data.ram_bytes, STC3117_RAM_SIZE); + if (ret) + return ret; + + return 0; +}; + +static int stc3117_set_para(struct stc3117_data *data) +{ + int ret; + + ret =3D regmap_write(data->regmap, STC3117_ADDR_MODE, STC3117_VMODE); + + for (int i =3D 0; i < STC3117_OCV_TABLE_SIZE; i++) + ret |=3D regmap_write(data->regmap, STC3117_ADDR_OCV_TABLE + i, + ocv_value[i] * 100 / 55); + if (data->soc_tab[1] !=3D 0) + ret |=3D regmap_bulk_write(data->regmap, STC3117_ADDR_SOC_TABLE, + data->soc_tab, STC3117_OCV_TABLE_SIZE); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_CC_CNF_H, + (ram_data.reg.cc_cnf >> 8) & 0xFF); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_CC_CNF_L, + ram_data.reg.cc_cnf & 0xFF); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_VM_CNF_H, + (ram_data.reg.vm_cnf >> 8) & 0xFF); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_VM_CNF_L, + ram_data.reg.vm_cnf & 0xFF); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_CTRL, 0x03); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_MODE, + STC3117_MIXED_MODE | STC3117_GG_RUN); + + return ret; +}; + +static int stc3117_init(struct stc3117_data *data) +{ + int id, ret; + int ctrl; + int ocv_m, ocv_l; + + regmap_read(data->regmap, STC3117_ADDR_ID, &id); + if (id !=3D STC3117_ID) + return -EINVAL; + + data->cc_cnf =3D (battery_info.battery_capacity_mah * + battery_info.sense_resistor * 250 + 6194) / 12389; + data->vm_cnf =3D (battery_info.battery_capacity_mah + * 200 * 50 + 24444) / 48889; + + /* Battery has not been removed */ + data->presence =3D 1; + + /* Read RAM data */ + ret =3D ram_read(data); + if (ret) + return ret; + + if (ram_data.reg.testword !=3D STC3117_RAM_TESTWORD || + (crc8(stc3117_crc_table, ram_data.ram_bytes, + STC3117_RAM_SIZE, CRC8_INIT)) !=3D 0) { + ram_data.reg.testword =3D STC3117_RAM_TESTWORD; + ram_data.reg.cc_cnf =3D data->cc_cnf; + ram_data.reg.vm_cnf =3D data->vm_cnf; + ram_data.reg.crc =3D crc8(stc3117_crc_table, ram_data.ram_bytes, + STC3117_RAM_SIZE - 1, CRC8_INIT); + + ret =3D regmap_read(data->regmap, STC3117_ADDR_OCV_H, &ocv_m); + + ret |=3D regmap_read(data->regmap, STC3117_ADDR_OCV_L, &ocv_l); + + ret |=3D stc3117_set_para(data); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_OCV_H, ocv_m); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_OCV_L, ocv_l); + if (ret) + return ret; + } else { + ret =3D regmap_read(data->regmap, STC3117_ADDR_CTRL, &ctrl); + if (ret) + return ret; + + if ((ctrl & STC3117_BATFAIL) !=3D 0 || + (ctrl & STC3117_PORDET) !=3D 0) { + ret =3D regmap_read(data->regmap, + STC3117_ADDR_OCV_H, &ocv_m); + + ret |=3D regmap_read(data->regmap, + STC3117_ADDR_OCV_L, &ocv_l); + + ret |=3D stc3117_set_para(data); + + ret |=3D regmap_write(data->regmap, + STC3117_ADDR_OCV_H, ocv_m); + + ret |=3D regmap_write(data->regmap, + STC3117_ADDR_OCV_L, ocv_l); + if (ret) + return ret; + } else { + ret =3D stc3117_set_para(data); + ret |=3D regmap_write(data->regmap, STC3117_ADDR_SOC_H, + (ram_data.reg.hrsoc >> 8 & 0xFF)); + ret |=3D regmap_write(data->regmap, STC3117_ADDR_SOC_L, + (ram_data.reg.hrsoc & 0xFF)); + if (ret) + return ret; + } + } + + ram_data.reg.state =3D STC3117_INIT; + ram_data.reg.crc =3D crc8(stc3117_crc_table, ram_data.ram_bytes, + STC3117_RAM_SIZE - 1, CRC8_INIT); + ret =3D ram_write(data); + if (ret) + return ret; + + return 0; +}; + +static int stc3117_task(struct stc3117_data *data) +{ + int id, mode, ret; + int count_l, count_m; + int ocv_l, ocv_m; + + regmap_read(data->regmap, STC3117_ADDR_ID, &id); + if (id !=3D STC3117_ID) { + data->presence =3D 0; + return -EINVAL; + } + + stc3117_get_battery_data(data); + + /* Read RAM data */ + ret =3D ram_read(data); + if (ret) + return ret; + + if (ram_data.reg.testword !=3D STC3117_RAM_TESTWORD || + (crc8(stc3117_crc_table, ram_data.ram_bytes, + STC3117_RAM_SIZE, CRC8_INIT) !=3D 0)) { + ram_data.reg.testword =3D STC3117_RAM_TESTWORD; + ram_data.reg.cc_cnf =3D data->cc_cnf; + ram_data.reg.vm_cnf =3D data->vm_cnf; + ram_data.reg.crc =3D crc8(stc3117_crc_table, ram_data.ram_bytes, + STC3117_RAM_SIZE - 1, CRC8_INIT); + ram_data.reg.state =3D STC3117_INIT; + } + + /* check battery presence status */ + ret =3D regmap_read(data->regmap, STC3117_ADDR_CTRL, &mode); + if ((mode & STC3117_BATFAIL) !=3D 0) { + data->presence =3D 0; + ram_data.reg.testword =3D 0; + ram_data.reg.state =3D STC3117_INIT; + ret =3D ram_write(data); + ret |=3D regmap_write(data->regmap, STC3117_ADDR_CTRL, STC3117_PORDET); + if (ret) + return ret; + } + + data->presence =3D 1; + + ret =3D regmap_read(data->regmap, STC3117_ADDR_MODE, &mode); + if (ret) + return ret; + if ((mode & STC3117_GG_RUN) =3D=3D 0) { + if (ram_data.reg.state > STC3117_INIT) { + ret =3D stc3117_set_para(data); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_SOC_H, + (ram_data.reg.hrsoc >> 8 & 0xFF)); + ret |=3D regmap_write(data->regmap, STC3117_ADDR_SOC_L, + (ram_data.reg.hrsoc & 0xFF)); + if (ret) + return ret; + } else { + ret =3D regmap_read(data->regmap, STC3117_ADDR_OCV_H, &ocv_m); + + ret |=3D regmap_read(data->regmap, STC3117_ADDR_OCV_L, &ocv_l); + + ret |=3D stc3117_set_para(data); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_OCV_H, ocv_m); + + ret |=3D regmap_write(data->regmap, STC3117_ADDR_OCV_L, ocv_l); + if (ret) + return ret; + } + ram_data.reg.state =3D STC3117_INIT; + } + + regmap_read(data->regmap, STC3117_ADDR_COUNTER_L, &count_l); + regmap_read(data->regmap, STC3117_ADDR_COUNTER_H, &count_m); + + count_m =3D (count_m << 8) + count_l; + + /* INIT state, wait for batt_current & temperature value available: */ + if (ram_data.reg.state =3D=3D STC3117_INIT && count_m > 4) { + data->avg_voltage =3D data->voltage; + data->avg_current =3D data->batt_current; + ram_data.reg.state =3D STC3117_RUNNING; + } + + if (ram_data.reg.state !=3D STC3117_RUNNING) { + data->batt_current =3D 0; + data->temp =3D INVALID_TEMPERATURE; + } else { + if (data->voltage < APP_CUTOFF_VOLTAGE) + data->soc =3D 0; + + if (mode & STC3117_VMODE) { + data->avg_current =3D 0; + data->batt_current =3D 0; + } + } + + ram_data.reg.hrsoc =3D data->hrsoc; + ram_data.reg.soc =3D (data->soc + 5) / 10; + ram_data.reg.crc =3D crc8(stc3117_crc_table, ram_data.ram_bytes, + STC3117_RAM_SIZE - 1, CRC8_INIT); + + ret =3D ram_write(data); + if (ret) + return ret; + return 0; +}; + +static void fuel_gauge_update_work(struct work_struct *work) +{ + struct stc3117_data *data =3D + container_of(work, struct stc3117_data, update_work.work); + + stc3117_task(data); + + /* Schedule the work to run again in 2 seconds */ + schedule_delayed_work(&data->update_work, msecs_to_jiffies(2000)); +} + +static int stc3117_get_property(struct power_supply *psy, + enum power_supply_property psp, union power_supply_propval *val) +{ + struct stc3117_data *data =3D power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + if (data->soc > BATTERY_FULL) + val->intval =3D POWER_SUPPLY_STATUS_FULL; + else if (data->batt_current < 0) + val->intval =3D POWER_SUPPLY_STATUS_CHARGING; + else if (data->batt_current > 0) + val->intval =3D POWER_SUPPLY_STATUS_DISCHARGING; + else + val->intval =3D POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + val->intval =3D data->voltage * 1000; + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: + val->intval =3D data->batt_current * 1000; + break; + case POWER_SUPPLY_PROP_VOLTAGE_OCV: + val->intval =3D data->ocv * 1000; + break; + case POWER_SUPPLY_PROP_CURRENT_AVG: + val->intval =3D data->avg_current * 1000; + break; + case POWER_SUPPLY_PROP_CAPACITY: + val->intval =3D data->soc; + break; + case POWER_SUPPLY_PROP_TEMP: + val->intval =3D data->temp * 10; + break; + case POWER_SUPPLY_PROP_PRESENT: + val->intval =3D data->presence; + break; + default: + return -EINVAL; + } + return 0; +} + +static enum power_supply_property stc3117_battery_props[] =3D { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_VOLTAGE_OCV, + POWER_SUPPLY_PROP_CURRENT_AVG, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_PRESENT, +}; + +static const struct power_supply_desc stc3117_battery_desc =3D { + .name =3D "stc3117-battery", + .type =3D POWER_SUPPLY_TYPE_BATTERY, + .get_property =3D stc3117_get_property, + .properties =3D stc3117_battery_props, + .num_properties =3D ARRAY_SIZE(stc3117_battery_props), +}; + +static const struct regmap_config stc3117_regmap_config =3D { + .reg_bits =3D 8, + .val_bits =3D 8, +}; + +static int stc3117_probe(struct i2c_client *client) +{ + struct stc3117_data *data; + struct power_supply_config psy_cfg =3D {}; + struct power_supply_battery_info *info; + int ret; + + data =3D devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->client =3D client; + data->regmap =3D devm_regmap_init_i2c(client, &stc3117_regmap_config); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); + + psy_cfg.drv_data =3D data; + + psy_cfg.fwnode =3D dev_fwnode(&client->dev); + + crc8_populate_msb(stc3117_crc_table, CRC8_POLYNOMIAL); + + data->battery =3D devm_power_supply_register(&client->dev, + &stc3117_battery_desc, &psy_cfg); + if (IS_ERR(data->battery)) + return dev_err_probe(&client->dev, PTR_ERR(data->battery), + "failed to register battery\n"); + + ret =3D device_property_read_u32(&client->dev, "shunt-resistor-micro-ohms= ", + &battery_info.sense_resistor); + if (ret) + return dev_err_probe(&client->dev, ret, + "failed to get shunt-resistor-micro-ohms\n"); + battery_info.sense_resistor =3D battery_info.sense_resistor / 1000; + + ret =3D power_supply_get_battery_info(data->battery, &info); + if (ret) + return dev_err_probe(&client->dev, ret, + "failed to get battery information\n"); + + battery_info.battery_capacity_mah =3D info->charge_full_design_uah / 1000; + battery_info.voltage_min_mv =3D info->voltage_min_design_uv / 1000; + battery_info.voltage_max_mv =3D info->voltage_max_design_uv / 1000; + + ret =3D stc3117_init(data); + if (ret) + return dev_err_probe(&client->dev, ret, + "failed to initialize of stc3117\n"); + + ret =3D devm_delayed_work_autocancel(&client->dev, &data->update_work, + fuel_gauge_update_work); + if (ret) + return ret; + + schedule_delayed_work(&data->update_work, 0); + + return 0; +} + +static const struct i2c_device_id stc3117_id[] =3D { + { "stc3117", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, stc3117_id); + +static const struct of_device_id stc3117_of_match[] =3D { + { .compatible =3D "st,stc3117" }, + { } +}; +MODULE_DEVICE_TABLE(of, stc3117_of_match); + +static struct i2c_driver stc3117_i2c_driver =3D { + .driver =3D { + .name =3D "stc3117_i2c_driver", + .of_match_table =3D stc3117_of_match, + }, + .probe =3D stc3117_probe, + .id_table =3D stc3117_id, +}; + +module_i2c_driver(stc3117_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Hardevsinh Palaniya = "); +MODULE_AUTHOR("Bhavin Sharma "); +MODULE_DESCRIPTION("STC3117 Fuel Gauge Driver"); --=20 2.34.1