From patchwork Sat Mar 21 12:52:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Schramm X-Patchwork-Id: 11451159 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 760C117E6 for ; Sat, 21 Mar 2020 12:53:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E4AC2072C for ; Sat, 21 Mar 2020 12:53:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726955AbgCUMx3 (ORCPT ); Sat, 21 Mar 2020 08:53:29 -0400 Received: from mail.manjaro.org ([176.9.38.148]:37078 "EHLO mail.manjaro.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726192AbgCUMx3 (ORCPT ); Sat, 21 Mar 2020 08:53:29 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.manjaro.org (Postfix) with ESMTP id BA73237E5074; Sat, 21 Mar 2020 13:53:27 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at manjaro.org Received: from mail.manjaro.org ([127.0.0.1]) by localhost (manjaro.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tcVmSE4T3BKl; Sat, 21 Mar 2020 13:53:25 +0100 (CET) From: Tobias Schramm To: Rob Herring Cc: Sebastian Reichel , Mark Rutland , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Tobias Schramm Subject: [PATCH v6 0/3] Add support for CellWise cw2015 fuel gauge Date: Sat, 21 Mar 2020 13:52:38 +0100 Message-Id: <20200321125241.3072123-1-t.schramm@manjaro.org> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patchset adds support for the CellWise cw2015 fuel gauge. The CellWise cw2015 fuel gauge is a shuntless, single-cell Li-Ion fuel gauge. It is used in the pine64 Pinebook Pro laptop. This is v6 of the patchset. This version fixes binding issues found by Rob. I've kept the cellwise,battery-profile property in the device tree. Its content describes characteristics of the battery built into a device. The exact format is unknown and not publicly documented. It is likely comprised of some key parameters of the battery (chemistry, voltages, design capacity) and parameters for tuning the internal state of charge approximation function. Since v2 CellWise has confirmed to me that the only way to obtain the profile blob is to mail them batteries for testing. Thus we will need to keep that property. In general I'm not 100 % sure about my json-schema binding for the gauge. It is my first time ever writing a json-schema binding and I'm not sure whether properties like power-supplies or monitored-battery need to be added to a separate, common schema for power supplies or not. Best Regards, Tobias Schramm Changelog: v2: * Change subject to "Add support for CellWise cw2015 fuel gauge" * Rewrite bindings as json-schema * Use default power-supplies handling * Use regmap for register access * Use standard simple-battery node * Replace printk/pr_* by dev_{dbg,info,warn,err} * Use cancel_delayed_work_sync in remove * General code cleanup v3: * Incorporate review by Andy * Add cellwise vendor prefix * Rename cellwise,bat-config-info property to cellwise,battery-profile * Remove most state of charge post-processing * Use fwnode interface * General code cleanup * Lots of code style fixes v4: * Implement additional changes requested by Andy * Use fwnode inline wrappers * Clean up waiting for gauge * Minor code style fixes v5: * Clean up includes * Handle errors during device property parsing * Refactor device property parsing * Replace i2c->probe by i2c->probe_new * More code style fixes v6: * Fix bindings according to review by Rob Tobias Schramm (3): dt-bindings: Document cellwise vendor-prefix dt-bindings: power: supply: add cw2015_battery bindings power: supply: add CellWise cw2015 fuel gauge driver .../bindings/power/supply/cw2015_battery.yaml | 82 ++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + MAINTAINERS | 6 + drivers/power/supply/Kconfig | 11 + drivers/power/supply/Makefile | 1 + drivers/power/supply/cw2015_battery.c | 749 ++++++++++++++++++ 6 files changed, 851 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml create mode 100644 drivers/power/supply/cw2015_battery.c