From patchwork Thu Feb 20 07:33:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matti Vaittinen X-Patchwork-Id: 1241288 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=fi.rohmeurope.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48NRCj0bz2z9sSD for ; Thu, 20 Feb 2020 18:33:37 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726826AbgBTHdc (ORCPT ); Thu, 20 Feb 2020 02:33:32 -0500 Received: from mail-lf1-f68.google.com ([209.85.167.68]:41955 "EHLO mail-lf1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726149AbgBTHdc (ORCPT ); Thu, 20 Feb 2020 02:33:32 -0500 Received: by mail-lf1-f68.google.com with SMTP id m30so2243312lfp.8; Wed, 19 Feb 2020 23:33:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=wiE1MVBAq+dtJZbD9QhDjogT10xMsxH3KrA52tzGEaE=; b=IXrN53CXFWXmXKd55kyidobMuN9OB0hTpHHKqQrEUbv/XSolBUPOcsLKt18/FASetM YVscCd80FZs0X83NZU9lt/LEOiCcJP1vrrCh7+Sq/H7dVMh9SWMCrrX8SUHa2aoODt4v w2g6tDib4eMyK0/GaVpihdKbq0cDoLzc5gh/QZW/LnmIW9ostQE5c79TZjwXmI11bmhY v1AdVRgCDpLxJvx32GaLQoLoVlGv27upx0/0YJEyRzaSKFTvINE394a8G5JTOMQkhF08 2xn1VdvxYHGeVjFyVgMxZ5AARizeZKel0k1tyCOL5LTYY0FgPLSPDh9KaxtF0NzVxNBs xung== X-Gm-Message-State: APjAAAUmX9+7myDMwgh0uzh8Vd1nBPpbUig8l+iGja7YxclZs4oux2CW CrJ2I9NPxXcrJYUDcA7oxSc= X-Google-Smtp-Source: APXvYqydig+xF2Ywm6Iv7YBB1hG2cbKXIzbm+c80mkOrc6fpXIb3jtHpbOGYiojY8rsNm8HRCIfnww== X-Received: by 2002:a19:6445:: with SMTP id b5mr15432764lfj.187.1582184007747; Wed, 19 Feb 2020 23:33:27 -0800 (PST) Received: from localhost.localdomain ([213.255.186.46]) by smtp.gmail.com with ESMTPSA id w6sm1256991lfq.95.2020.02.19.23.33.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2020 23:33:27 -0800 (PST) Date: Thu, 20 Feb 2020 09:33:14 +0200 From: Matti Vaittinen To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.com Cc: Sebastian Reichel , Rob Herring , Mark Rutland , Greg Kroah-Hartman , "Rafael J. Wysocki" , Liam Girdwood , Mark Brown , Chen-Yu Tsai , Support Opensource , Charles Keepax , Richard Fitzgerald , Milo Kim , Bartosz Golaszewski , Andrei Stefanescu , Matthias Brugger , Tony Lindgren , Andy Gross , Bjorn Andersson , Sangbeom Kim , Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Matti Vaittinen , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, patches@opensource.cirrus.com, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-omap@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Markus Laine , Mikko Mutanen Subject: [RFC PATCH v3 0/8] Support ROHM BD99954 charger IC Message-ID: MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.12.1 (2019-06-15) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Support ROHM BD99954 Battery Management IC ROHM BD99954 is a Battery Management IC for 1-4 cell Lithium-Ion secondary battery. BD99954 is intended to be used in space-constraint equipment such as Low profile Notebook PC, Tablets and other applications. Series extracts a "linear ranges" helper out of the regulator framework. Linear ranges helper is intended to help converting real-world values to register values when conversion is linear. I suspect this is usefull also for power subsystem and possibly for clk. This version of series introduces new battry DT binding entries and adds the parsing in power_supply_get_battery_info(). These properties can be converted to ROHM specific properties and parsing can be moved to the BD99954 driver if this does not seem like a right thing to do. I just have a feeling the the BD99954 is not the only charger which could utilize these. We also add ROHM specific charger parameters for limiting the input current(s). I think these parameters are pretty common and maybe the "rohm,"-prefix should be dropped and we should try having common input limiting properties for different chips? Series is based on v5.5-rc7 Changelog RFC-v3: DT-bindings: - fix the BD99954 binding (the *-microvolt Vs. *-microvolts issue is still there. Not sure which one is correct) - renabe tricklecharge-* binding to trickle-charge-* as suggested by Rob. - drop the linear-ranges helper which was written for BD70528 and extract the linear-range code from regulator framework instead. - refactor regulator framework to utilize extracted linear-ranges code. - change the struct regulator_linear_range to linear_range from regulator drivers. - refactor BD70528 to use regulator framework originated linear-ranges code. - change BD99954 to use linear-ranges code from regulator framework Changelog RFC-v2: DT-bindings: - Used the battery parameters described in battery.txt - Added few new parameters to battery.txt - Added ASCII art charging profile chart for BD99954 to explain states and limits. Linear ranges: - Fixed division by zero error from linear-ranges code if step 0 is used. Power-supply core: - Added parsing of new battery parameters. BD99954 driver: - converted to use battery parameters from battery node - Added step 0 ranges for reg values which do not change voltage - added dt-node to psy-config Patch 1: DT binding docs for the new battery parameters Patch 2: BD99954 charger DT binding docs Patch 3: Linear ranges helpers Patch 4: Rename struct regulator_linear_range to struct linear_range and convert regulator drivers to use renamed struct Patch 5: Use linear-ranges helpers in regulator framework Patch 6: Use linear-ranges helpers in bd70528 driver Patch 7: Parsing of new battery parameters Patch 8: ROHM BD99954 charger IC driver --- Matti Vaittinen (8): dt-bindings: battry: add new battery parameters dt_bindings: ROHM BD99954 Charger drivers: base: add linear ranges helpers regulator: rename regulator_linear_range to linear_range regulator: use linear_ranges helper power: supply: bd70528: use linear ranges power: supply: add battery parameters power: supply: Support ROHM bd99954 charger .../bindings/power/supply/battery.txt | 6 + .../bindings/power/supply/rohm,bd9995x.yaml | 153 +++ drivers/base/Kconfig | 3 + drivers/base/Makefile | 1 + drivers/base/linear_ranges.c | 246 ++++ drivers/power/supply/Kconfig | 11 + drivers/power/supply/Makefile | 1 + drivers/power/supply/bd70528-charger.c | 142 +- drivers/power/supply/bd99954-charger.c | 1171 +++++++++++++++++ drivers/power/supply/power_supply_core.c | 8 + drivers/regulator/88pg86x.c | 4 +- drivers/regulator/88pm800-regulator.c | 4 +- drivers/regulator/Kconfig | 1 + drivers/regulator/act8865-regulator.c | 4 +- drivers/regulator/act8945a-regulator.c | 2 +- drivers/regulator/arizona-ldo1.c | 2 +- drivers/regulator/arizona-micsupp.c | 4 +- drivers/regulator/as3711-regulator.c | 6 +- drivers/regulator/as3722-regulator.c | 4 +- drivers/regulator/axp20x-regulator.c | 16 +- drivers/regulator/bcm590xx-regulator.c | 8 +- drivers/regulator/bd70528-regulator.c | 8 +- drivers/regulator/bd718x7-regulator.c | 26 +- drivers/regulator/da903x.c | 2 +- drivers/regulator/helpers.c | 130 +- drivers/regulator/hi6421-regulator.c | 4 +- drivers/regulator/lochnagar-regulator.c | 4 +- drivers/regulator/lp873x-regulator.c | 4 +- drivers/regulator/lp87565-regulator.c | 2 +- drivers/regulator/lp8788-buck.c | 2 +- drivers/regulator/max77650-regulator.c | 2 +- drivers/regulator/mcp16502.c | 4 +- drivers/regulator/mt6323-regulator.c | 6 +- drivers/regulator/mt6358-regulator.c | 8 +- drivers/regulator/mt6380-regulator.c | 6 +- drivers/regulator/mt6397-regulator.c | 6 +- drivers/regulator/palmas-regulator.c | 4 +- drivers/regulator/qcom-rpmh-regulator.c | 2 +- drivers/regulator/qcom_rpm-regulator.c | 14 +- drivers/regulator/qcom_smd-regulator.c | 70 +- drivers/regulator/rk808-regulator.c | 10 +- drivers/regulator/s2mps11.c | 14 +- drivers/regulator/sky81452-regulator.c | 2 +- drivers/regulator/stpmic1_regulator.c | 18 +- drivers/regulator/tps65086-regulator.c | 10 +- drivers/regulator/tps65217-regulator.c | 4 +- drivers/regulator/tps65218-regulator.c | 6 +- drivers/regulator/tps65912-regulator.c | 4 +- drivers/regulator/twl-regulator.c | 4 +- drivers/regulator/twl6030-regulator.c | 2 +- drivers/regulator/wm831x-dcdc.c | 2 +- drivers/regulator/wm831x-ldo.c | 4 +- drivers/regulator/wm8350-regulator.c | 2 +- drivers/regulator/wm8400-regulator.c | 2 +- include/linux/linear_range.h | 48 + include/linux/power/bd99954-charger.h | 1075 +++++++++++++++ include/linux/power_supply.h | 4 + include/linux/regulator/driver.h | 27 +- 58 files changed, 3000 insertions(+), 339 deletions(-) create mode 100644 Documentation/devicetree/bindings/power/supply/rohm,bd9995x.yaml create mode 100644 drivers/base/linear_ranges.c create mode 100644 drivers/power/supply/bd99954-charger.c create mode 100644 include/linux/linear_range.h create mode 100644 include/linux/power/bd99954-charger.h base-commit def9d2780727 ("Linux 5.5-rc7")