From patchwork Fri Apr 23 12:58:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Carl Philipp Klemm X-Patchwork-Id: 426521 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69E01C433ED for ; Fri, 23 Apr 2021 13:13:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31E74613C8 for ; Fri, 23 Apr 2021 13:13:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231220AbhDWNOZ (ORCPT ); Fri, 23 Apr 2021 09:14:25 -0400 Received: from sender11-of-o51.zoho.eu ([31.186.226.237]:21154 "EHLO sender11-of-o51.zoho.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbhDWNOY (ORCPT ); Fri, 23 Apr 2021 09:14:24 -0400 ARC-Seal: i=1; a=rsa-sha256; t=1619182713; cv=none; d=zohomail.eu; s=zohoarc; b=R9f1QxYmddGFZTqz/hZqF5tvBoex/fKYbofSPjgmFSjDx6D7sY7sKVsf9EkH/Rc/zMNt9uzfM6kyc1LvkdLpwQOgmNAJf5eJKitrKz87QjswlDTNmGmuW0d5dZ/uwkPTbC8x94IsoJAPKlMfkeQSIdAg+AU6jn3F98QOb2FubJo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.eu; s=zohoarc; t=1619182713; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:MIME-Version:Message-ID:Subject:To; bh=6fFd2RWg6ZB7ZOJqmflBA0fUpb9RZMdgrn2KoLcfnjg=; b=ikuCEjOFE2ugOWiBOgaNi2sKXp7evILXchxeFMYGpRWwMvzOj3YQ5HasG4iRL0oBLrdYiyGHh5wyVGYvjUL0y7n1i82CbL9QcJoOOzTK/WAHmShGQ5Oa1s20YrOUWYlCJukdulQ+bbdLPqxkcKcVapW74IwgHgES0jmNd/fyQhQ= ARC-Authentication-Results: i=1; mx.zohomail.eu; spf=pass smtp.mailfrom=philipp@uvos.xyz; dmarc=pass header.from= header.from= Received: from UVOSLinux (ip-95-222-215-151.hsi15.unitymediagroup.de [95.222.215.151]) by mx.zoho.eu with SMTPS id 1619182711610837.8148067591384; Fri, 23 Apr 2021 14:58:31 +0200 (CEST) Date: Fri, 23 Apr 2021 14:58:31 +0200 From: Carl Philipp Klemm To: Sebastian Reichel Cc: linux-pm@vger.kernel.org, linux-omap@vger.kernel.org, Arthur Demchenkov , Tony Lindgren , Merlijn Wajer , Pavel Machek Subject: [PATCH v2] power: supply: cpcap-battery: invalidate empty->counter_uah and charge_full when charge_now indicates that they are grossly wrong Message-Id: <20210423145831.a8f0ba37baa211353cdf43b8@uvos.xyz> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-unknown-linux-gnu) Mime-Version: 1.0 X-ZohoMailClient: External Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org This invalidates empty->counter_uah and charge_full when charge_now indicates that they are grossly wrong and adds some tolerance to POWER_SUPPLY_PROP_CHARGE_FULL to allow for inaccuracies in the charge counter and manufacturing tolerances in the battery. Signed-off-by: Carl Philipp Klemm --- drivers/power/supply/cpcap-battery.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index 386d269e699f..9d9453231ea7 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -762,10 +762,23 @@ static int cpcap_battery_get_property(struct power_supply *psy, if (!empty->voltage) return -ENODATA; val->intval = empty->counter_uah - latest->counter_uah; - if (val->intval < 0) + if (val->intval < 0) { + /* Assume invalid config if CHARGE_NOW is -20% */ + if (ddata->charge_full && abs(val->intval) > ddata->charge_full/5) { + empty->voltage = 0; + ddata->charge_full = 0; + return -ENODATA; + } val->intval = 0; - else if (ddata->charge_full && ddata->charge_full < val->intval) + } else if (ddata->charge_full && ddata->charge_full < val->intval) { + /* Assume invalid config if CHARGE_NOW exceeds CHARGE_FULL by 20% */ + if (val->intval > (6*ddata->charge_full)/5) { + empty->voltage = 0; + ddata->charge_full = 0; + return -ENODATA; + } val->intval = ddata->charge_full; + } break; case POWER_SUPPLY_PROP_CHARGE_FULL: if (!ddata->charge_full) @@ -842,7 +855,7 @@ static int cpcap_battery_set_property(struct power_supply *psy, case POWER_SUPPLY_PROP_CHARGE_FULL: if (val->intval < 0) return -EINVAL; - if (val->intval > ddata->config.info.charge_full_design) + if (val->intval > (6*ddata->config.info.charge_full_design)/5) return -EINVAL; ddata->charge_full = val->intval;