From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E3F76C001DE for ; Mon, 31 Jul 2023 07:37:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=y8Xp8T40nJr2jRq46KPEmZz5aDhdpvfDpeT/14Od5qo=; b=T9i9mOuRT6ClFo R0BdV6bBPhZdb9UT4nnHL2bLbUlV2PEcxy467trJwAZtkllq4yrVJ2fHs2jiwBOCpB2PccNL/O/jR jN9CVoCYY0HY49ZC7oF0te5aZmXFiRfVT5cDRsmItaXKif0Y8P1IWfiNmtYv4w//X0ufX00qapzCL 1/AYFmkcq0EuwdVN59lEbJ0CVB888z9OLZP2HRKQh4ePxPPEVzCTbzf0mYjWGAVMnMywZnenPSLeA YLb+sfR7QqSZHvB5BXU9Y2R9JDtvdbpUBP4Tm9up/wdexIrAC/bVntC7AZBhAhD7w0Go3lCI3DZV3 EE0vdWP1gwYd+HlvOy4g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qQNSj-00EKyq-2e; Mon, 31 Jul 2023 07:37:05 +0000 Received: from mail-lf1-x12a.google.com ([2a00:1450:4864:20::12a]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qQNSR-00EKsQ-0l for linux-arm-kernel@lists.infradead.org; Mon, 31 Jul 2023 07:36:48 +0000 Received: by mail-lf1-x12a.google.com with SMTP id 2adb3069b0e04-4fe389d6f19so668864e87.3 for ; Mon, 31 Jul 2023 00:36:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690789005; x=1691393805; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=UDXgSylBUJtlqgXKl+eFyzEmuuOxDLbY4Ry7v67coaU=; b=M+YmC08CYkEd/jALSE78ke/tk19xg7gETYrI9RtT46ASu0nDcTimuCNCo4EEtrz6ov 5D8N2FpMJGBgFJpLZiRXgpSGMWDDgHLA3whI3hP4xZOBs/41HeeuN75/hdABoiCkKR/x ZAWGLeEp1XhiphGT2d57V3xw+M8ju0IMnoPT2GS14Upj9BIdgIMx8xzcvULpMHBQPImS wr3XXNhu3XkeS1loHJGEa0LVgTLe8QWJ6zHFjs0srBHlL4O/N2pVYN86lJoMrRDeY9Mr wXdjJokRabzgMz2UNV6GXyxN85LVMnK3jc2l2KmuiTpKmKeLBNqf3M6ym+km8ZucXBUy HPRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690789005; x=1691393805; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UDXgSylBUJtlqgXKl+eFyzEmuuOxDLbY4Ry7v67coaU=; b=lvRenNalsekRUjJP4nxUM1qi9YeUwjQ/OlOSqmfKWDHkJPMfN0IxEKQzPjznEwAH/T n8CQZpeNfiCXjZTfRxvo5dhhPxS1ktaLmTWaA7JhfKccNxpUfKr4reCKYGhKQTU6MBth csrDEB7nI3KpYTc5O17WLylpzZQxrvcGhdx1H+OU6GixC9SbBq/F6fsysWsbzjX5NIa5 OnHHfjdJUud9c+mnMmKLILP8B060v8dnde4vaTaPjWw7gUVilXZjRzeXAmfVJZrtN5Py QDC670bynLLyS5hhVEFZW0/PBqGUKWE33sRIVRjEHYqBJde5dgbYef2nXKD2jY7nKBII 8O3g== X-Gm-Message-State: ABy/qLblCesYWG3pWbfphFgegxk9aKXm+lg4at1m0ENKfTggrrACCXLV bXAJYoOZNKlx320GVSlo2cU= X-Google-Smtp-Source: APBJJlG3HmFleE3nV4W8kYWqWAYTO2n8ueJdfAwma97u5u1Bpv71uvSAJyJ8zFFcx6Oz4HEXNl4+9w== X-Received: by 2002:ac2:58c8:0:b0:4f9:596d:c803 with SMTP id u8-20020ac258c8000000b004f9596dc803mr4878541lfo.53.1690789005107; Mon, 31 Jul 2023 00:36:45 -0700 (PDT) Received: from xeon.. ([188.163.112.48]) by smtp.gmail.com with ESMTPSA id m14-20020a056512014e00b004fe3229e584sm586898lfo.270.2023.07.31.00.36.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Jul 2023 00:36:44 -0700 (PDT) From: Svyatoslav Ryhel To: Iskren Chernev , Krzysztof Kozlowski , Marek Szyprowski , Matheus Castello , Sebastian Reichel , Rob Herring , Conor Dooley , Russell King , Alim Akhtar , Arnd Bergmann , Jernej Skrabec , Svyatoslav Ryhel , Claudiu Beznea , Stefan Hansson Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v3 3/4] power: max17040: get thermal data from adc if available Date: Mon, 31 Jul 2023 10:36:12 +0300 Message-Id: <20230731073613.10394-4-clamor95@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230731073613.10394-1-clamor95@gmail.com> References: <20230731073613.10394-1-clamor95@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230731_003647_274194_A315DB62 X-CRM114-Status: GOOD ( 19.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Since fuel gauge does not support thermal monitoring, some vendors may couple this fuel gauge with thermal/adc sensor to monitor battery cell exact temperature. Add this feature by adding optional iio thermal channel. Signed-off-by: Svyatoslav Ryhel --- drivers/power/supply/Kconfig | 2 +- drivers/power/supply/max17040_battery.c | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index c78be9f322e6..32600609865b 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -374,7 +374,7 @@ config AXP288_FUEL_GAUGE config BATTERY_MAX17040 tristate "Maxim MAX17040/17041/17043 family Fuel Gauge" - depends on I2C + depends on I2C && IIO select REGMAP_I2C help Driver supports Maxim fuel-gauge systems for lithium-ion (Li+) diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index 3301e8a4b16c..54db20637c87 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -18,6 +18,7 @@ #include #include #include +#include #define MAX17040_VCELL 0x02 #define MAX17040_SOC 0x04 @@ -142,6 +143,7 @@ struct max17040_chip { struct delayed_work work; struct power_supply *battery; struct chip_data data; + struct iio_channel *channel_temp; /* battery capacity */ int soc; @@ -404,6 +406,13 @@ static int max17040_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_STATUS: power_supply_get_property_from_supplier(psy, psp, val); break; + case POWER_SUPPLY_PROP_TEMP: + if (!chip->channel_temp) + return -ENODATA; + + iio_read_channel_processed_scale(chip->channel_temp, + &val->intval, 10); + break; default: return -EINVAL; } @@ -424,6 +433,7 @@ static enum power_supply_property max17040_battery_props[] = { POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_TEMP, }; static const struct power_supply_desc max17040_battery_desc = { @@ -469,6 +479,17 @@ static int max17040_probe(struct i2c_client *client) i2c_set_clientdata(client, chip); psy_cfg.drv_data = chip; + /* Switch to devm_iio_channel_get_optional when available */ + chip->channel_temp = devm_iio_channel_get(&client->dev, "temp"); + if (IS_ERR(chip->channel_temp)) { + ret = PTR_ERR(chip->channel_temp); + if (ret != -ENODEV) + return dev_err_probe(&client->dev, PTR_ERR(chip->channel_temp), + "failed to get temp\n"); + else + chip->channel_temp = NULL; + } + chip->battery = devm_power_supply_register(&client->dev, &max17040_battery_desc, &psy_cfg); if (IS_ERR(chip->battery)) { -- 2.39.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel