From patchwork Tue Apr 14 12:52:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Schramm X-Patchwork-Id: 11487481 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 A9B0B912 for ; Tue, 14 Apr 2020 12:53:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BB49206A2 for ; Tue, 14 Apr 2020 12:53:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2502287AbgDNMxd (ORCPT ); Tue, 14 Apr 2020 08:53:33 -0400 Received: from mail.manjaro.org ([176.9.38.148]:51574 "EHLO mail.manjaro.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2502282AbgDNMxa (ORCPT ); Tue, 14 Apr 2020 08:53:30 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.manjaro.org (Postfix) with ESMTP id 04B9D374279E; Tue, 14 Apr 2020 14:53:26 +0200 (CEST) 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 VQmChaPkhC0C; Tue, 14 Apr 2020 14:53:21 +0200 (CEST) From: Tobias Schramm To: Sebastian Reichel Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Tobias Schramm Subject: [RESEND v6 0/3] Add support for CellWise cw2015 fuel gauge Date: Tue, 14 Apr 2020 14:52:05 +0200 Message-Id: <20200414125208.1091989-1-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 just a resend of v6 to the linux-pm maintainers for merging. 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