From patchwork Tue Jan 15 10:32:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "(Exiting) Baolin Wang" X-Patchwork-Id: 10764275 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2CF85139A for ; Tue, 15 Jan 2019 10:33:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16C182B0F2 for ; Tue, 15 Jan 2019 10:33:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 07BE82B0E0; Tue, 15 Jan 2019 10:33:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 90F182B8FB for ; Tue, 15 Jan 2019 10:33:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728868AbfAOKdY (ORCPT ); Tue, 15 Jan 2019 05:33:24 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:38525 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728856AbfAOKdX (ORCPT ); Tue, 15 Jan 2019 05:33:23 -0500 Received: by mail-pg1-f194.google.com with SMTP id g189so1076369pgc.5 for ; Tue, 15 Jan 2019 02:33:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=z+FEdKv7SOmZhEaX0R5BmbcCjlQ5jY9He3y4lwTJ11k=; b=fbSRwjQ/EGE0uRRDVnqryJ62/1KLUb9050Vx0WaPWP2IPPZzpgcicvYwGhus6ms83/ vqYWn8nBZ+gzWOuID2hqv5KFzW4Y1f+twpifDBtDoNro7yv/Zq4ZL+SLk9eqsfDghryP b5VC9jSegvUeY5dgh731OrZL/5KfF1Lt7NzyQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=z+FEdKv7SOmZhEaX0R5BmbcCjlQ5jY9He3y4lwTJ11k=; b=iCWaP/hQ5EuNQyYUIlbBNlBjghPi+fxynwg92jtO9XQxodtHUR6oQUJQzKuRFZxsSi 3FG8JSfls5wYBgWhw2Qe94SKXZOzb44wpL16uViA+hH1xvRjhn9gs16s9juBHQH6ux5D 285lGttoym0HgtCaoorfciAogyIOVjjv964Pb04h2PEHqwsiCwzbsPMQgfULOkmbQCgV ue3QDSqJJKMydHqF+Q7Pr/luH1tJhjxZKSsMW/JhWBM2AlCMBfi8xwEDRrVoe8ksX95h lPkntjm4ETW5fX3tcQ0U+MerNNjx3EpiPRaibpdN24pqDLkXhSWedsVfsfEy5EhMyn+A qkuw== X-Gm-Message-State: AJcUukdYxIOXqAhUBp61AUorWZl/o8tWiIxMD96z4AsBIJN4zcfyqcHD LN49+CRvtzwwg6fJK18V1unUDg== X-Google-Smtp-Source: ALg8bN7aQ7UMWqARv8+lFsHSZ+pvlDvq9V5qRH0fxi7L1fUlCtn/k7M0UOlGvcrKwX/sPIAIICtHpw== X-Received: by 2002:a62:7e13:: with SMTP id z19mr3316400pfc.94.1547548402337; Tue, 15 Jan 2019 02:33:22 -0800 (PST) Received: from baolinwangubtpc.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id d13sm5073957pfd.58.2019.01.15.02.33.19 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 15 Jan 2019 02:33:21 -0800 (PST) From: Baolin Wang To: sre@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, yuanjiang.yu@unisoc.com, baolin.wang@linaro.org, broonie@kernel.org, zhang.lyra@gmail.com, orsonzhai@gmail.com Subject: [PATCH 2/4] power: supply: sc27xx: Add one property to read charge voltage Date: Tue, 15 Jan 2019 18:32:35 +0800 Message-Id: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <76a12fe5d0cc670266100b0587b047714c9a8a83.1547544142.git.baolin.wang@linaro.org> References: <76a12fe5d0cc670266100b0587b047714c9a8a83.1547544142.git.baolin.wang@linaro.org> In-Reply-To: <76a12fe5d0cc670266100b0587b047714c9a8a83.1547544142.git.baolin.wang@linaro.org> References: <76a12fe5d0cc670266100b0587b047714c9a8a83.1547544142.git.baolin.wang@linaro.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE property to get charge voltage sampling by ADC controller, which is used to validate if the charge voltage is in normal range or not in charger manager. Signed-off-by: Baolin Wang --- drivers/power/supply/sc27xx_fuel_gauge.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c index 76da189..4926b8a 100644 --- a/drivers/power/supply/sc27xx_fuel_gauge.c +++ b/drivers/power/supply/sc27xx_fuel_gauge.c @@ -72,6 +72,7 @@ * @lock: protect the structure * @gpiod: GPIO for battery detection * @channel: IIO channel to get battery temperature + * @charge_chan: IIO channel to get charge voltage * @internal_resist: the battery internal resistance in mOhm * @total_cap: the total capacity of the battery in mAh * @init_cap: the initial capacity of the battery in mAh @@ -92,6 +93,7 @@ struct sc27xx_fgu_data { struct mutex lock; struct gpio_desc *gpiod; struct iio_channel *channel; + struct iio_channel *charge_chan; bool bat_present; int internal_resist; int total_cap; @@ -391,6 +393,18 @@ static int sc27xx_fgu_get_vbat_ocv(struct sc27xx_fgu_data *data, int *val) return 0; } +static int sc27xx_fgu_get_charge_vol(struct sc27xx_fgu_data *data, int *val) +{ + int ret, vol; + + ret = iio_read_channel_processed(data->charge_chan, &vol); + if (ret < 0) + return ret; + + *val = vol * 1000; + return 0; +} + static int sc27xx_fgu_get_temp(struct sc27xx_fgu_data *data, int *temp) { return iio_read_channel_processed(data->channel, temp); @@ -502,6 +516,14 @@ static int sc27xx_fgu_get_property(struct power_supply *psy, val->intval = value; break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = sc27xx_fgu_get_charge_vol(data, &value); + if (ret) + goto error; + + val->intval = value; + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: case POWER_SUPPLY_PROP_CURRENT_AVG: ret = sc27xx_fgu_get_current(data, &value); @@ -567,6 +589,7 @@ static int sc27xx_fgu_property_is_writeable(struct power_supply *psy, POWER_SUPPLY_PROP_VOLTAGE_OCV, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_CURRENT_AVG, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, }; static const struct power_supply_desc sc27xx_fgu_desc = { @@ -907,6 +930,12 @@ static int sc27xx_fgu_probe(struct platform_device *pdev) return PTR_ERR(data->channel); } + data->charge_chan = devm_iio_channel_get(&pdev->dev, "charge-vol"); + if (IS_ERR(data->charge_chan)) { + dev_err(&pdev->dev, "failed to get charge IIO channel\n"); + return PTR_ERR(data->charge_chan); + } + data->gpiod = devm_gpiod_get(&pdev->dev, "bat-detect", GPIOD_IN); if (IS_ERR(data->gpiod)) { dev_err(&pdev->dev, "failed to get battery detection GPIO\n");