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[209.132.180.67]) by mx.google.com with ESMTP id m125si3328788oia.240.2020.03.28.04.03.46; Sat, 28 Mar 2020 04:03:59 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=gjcm36dX; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726353AbgC1LC3 (ORCPT + 99 others); Sat, 28 Mar 2020 07:02:29 -0400 Received: from mail-pl1-f196.google.com ([209.85.214.196]:42327 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725973AbgC1LC3 (ORCPT ); Sat, 28 Mar 2020 07:02:29 -0400 Received: by mail-pl1-f196.google.com with SMTP id e1so4512746plt.9; Sat, 28 Mar 2020 04:02:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ybzEvvM/Y1fK+T4WB91lb7mb7tennh3w1iclknsvBKc=; b=gjcm36dXWUs94y8B/p36oRvfBldTX64A6N06TUsXWS0b6nFqH9rrxoCyNRHHeaiVvv 2LEb+zr4cpeSH3c8zLRfFw7jgECmRWw4mCs/f3/u2Ww6lmBoefnBs/fIN8A3GcNwNmVK Gicsud5Vj0H+I01Pg+ccfKrB1dPmMbHfo1vaCaGqSPFv7xrTY5WUlOXlUYi74oWp2hiF z5LLYLMYKpyFvO3E4jC5wkTmryGlRW/yfOWK22PC1u+XAiXNEzFJ45Tz92vRfXqUUlc1 dN8XRULR6WSGhd1zWwvsa8Yy3X25R3H3u2heWimkaCV/Sz8qgKBtT6k0nXrMQ0JfeK5b 2yBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ybzEvvM/Y1fK+T4WB91lb7mb7tennh3w1iclknsvBKc=; b=Mq90f3Nhi73MFpYncHkTweX/jPhRB1Nu8S1AEaweCkrCt3gDehgZKMM4EYbCm+nqxS gFWq0gT7AZThy70TERzTyvPaF+YZfjWooc2QKlL72C56y5g3ssHt0oYCZGUzhZ8EWjEP YHE96N1W3X7pDsy8emZJ1nwPkre4D93C86Zvho88HSv3NjQrMj7MT+Ev9x8xoaoGmGjX BIDOVcTxPAfF98iI4bShycZIsPinJX3WPG3xcu0NDukBI6L/BU55VFDdzrvLIsQuq5u9 GZnO2sDEfTLS7ihC2uOwyKwksO+VNg/7UcF8rnXdxMIrm8MGnAXYTbVPopNE8YVyth8V V6tA== X-Gm-Message-State: ANhLgQ24Kxf25wpCOcwQ2CCrFkSdc7wYOUiEG3M0wKpelBVwt5Y5mCsY 9Ha5dmzr/MudgEZcLpDpt3hmaAD4bhYIZWiZT3Q= X-Received: by 2002:a17:90a:9408:: with SMTP id r8mr4479521pjo.1.1585393348229; Sat, 28 Mar 2020 04:02:28 -0700 (PDT) MIME-Version: 1.0 References: <20200328001154.17313-1-sravanhome@gmail.com> <20200328001154.17313-5-sravanhome@gmail.com> In-Reply-To: <20200328001154.17313-5-sravanhome@gmail.com> From: Andy Shevchenko Date: Sat, 28 Mar 2020 13:02:17 +0200 Message-ID: Subject: Re: [PATCH v5 4/5] power: supply: Add support for mps mp2629 battery charger To: Saravanan Sekar Cc: Lee Jones , Rob Herring , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald , Sebastian Reichel , devicetree , Linux Kernel Mailing List , linux-iio , Linux PM Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Mar 28, 2020 at 2:12 AM Saravanan Sekar wrote: > > The mp2629 provides switching-mode battery charge management for > single-cell Li-ion or Li-polymer battery. Driver supports the > access/control input source and battery charging parameters. ... > +#include > +#include Missed header bits.h. ... > + ret = iio_read_channel_processed(charger->iiochan[ch], &chval); > + if (ret < 0) Is it possible to get positive returned value? > + return ret; ... > + val->intval = (rval * props[fld].step) + props[fld].min; Too many parentheses. ... > + return ((psp == POWER_SUPPLY_PROP_PRECHARGE_CURRENT) || > + (psp == POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT) || > + (psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT) || > + (psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE)); Ditto. ... > + return ((psp == POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT) || > + (psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT)); Ditto. ... > + return sprintf(buf, "%d mohm\n", rval); Hmm... For units we usually have separate node, but it is up to maintainer, I dunno what the common practice is there. ... > + int val; > + int ret; > + > + ret = kstrtoint(buf, 10, &val); > + if (ret) > + return ret; > + > + if (val < 0 && val > 140) What the point to convert negative values in the first place? kstrtouint() > + return -ERANGE; ... > + struct power_supply_config psy_cfg = {NULL}; { 0 } -- With Best Regards, Andy Shevchenko