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 X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_NEOMUTT autolearn=ham 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 16B4DECDE46 for ; Thu, 25 Oct 2018 22:30:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CEBBC20824 for ; Thu, 25 Oct 2018 22:30:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gORb6cHD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEBBC20824 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727546AbeJZHEj (ORCPT ); Fri, 26 Oct 2018 03:04:39 -0400 Received: from mail-qt1-f194.google.com ([209.85.160.194]:37202 "EHLO mail-qt1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726763AbeJZHEi (ORCPT ); Fri, 26 Oct 2018 03:04:38 -0400 Received: by mail-qt1-f194.google.com with SMTP id d14-v6so11914911qto.4; Thu, 25 Oct 2018 15:30:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=S8vZmvdGUiC7CSK5dkt+m3y87P6zuXNe3u1DBd0mrVo=; b=gORb6cHDZ9Xsqvb2oeWBtl55DonGhhVaghZAuIP9SNcwV5zYLnNzsRxHimFPkYkKHs BMeqH19LUWviDdqPiHa8XbYijjw4YRb1wy8v6EWG9aTMnF/XGs3BqkafNr0r8w0RPXbO i419LH8XyDgICnoRTuWXaHMm56fQ3e9fMyI08qT0XuGX9gau6pWtSYr7L78AA6k/a6Wa nwaNPy9zr2OjzKTYZS+mSjyMtFwdlT4+MvlMrWJyCQwPuO+WXVAMqssW5ZUlKIGqVC/+ mpGc9ioI+NWuz3mRcZshKmS0HMtOna24T66uHdMi2+EWD8Us8DAxYdMpvpFt3q24sPTy TbDg== 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:references :mime-version:content-disposition:in-reply-to:user-agent; bh=S8vZmvdGUiC7CSK5dkt+m3y87P6zuXNe3u1DBd0mrVo=; b=jkPYU9bscpcpGgPUJ4oIaDlOo91cZbwWtNPQKanCad2l5gp5qvtgeEoXTk8VsVCb2O WKAobmObpZUoH9pnzFw4q+d8fjQ1h9Op9c2rH+TVlo/fiVNtC74Z4Yi0xZLrgCYoFPNV oJHLV15KBk6IpOhxSFiTzFo+9UMH5A0SsPV19jGXOHPl82AZXLGxWioF0yCH8JkfV9wH iGyPJjyDbzp2l4RT7kreOmcMYXkc54IPMAFUCcSB73ONcj8CvuwXVFLj3luwNKj6u9nM Lt6DXinoHAbGR+f3iq9uNgFX4Yn1PH15glOUghHASbWzAJ8z0nOIxdugjz59ZhET3Vaf iCxg== X-Gm-Message-State: AGRZ1gJJaja+b4Wlkb0DElN1Obd9srukrfMpqvmY0t/J1xgdlX6JePOq t7OGHBPhVnR6EQVeHrMhKbI= X-Google-Smtp-Source: AJdET5eDD5KtxyJuUHOfWb/oq2R/DOHUwKExBPlvNqm4SNjVAQFlwGigCB/4FzEa/d6mEa/IO9E9mg== X-Received: by 2002:ac8:33ad:: with SMTP id c42-v6mr1042922qtb.190.1540506609387; Thu, 25 Oct 2018 15:30:09 -0700 (PDT) Received: from renatolg ([186.220.20.163]) by smtp.gmail.com with ESMTPSA id y47-v6sm8619123qtc.15.2018.10.25.15.30.06 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 25 Oct 2018 15:30:09 -0700 (PDT) Date: Thu, 25 Oct 2018 19:30:04 -0300 From: Renato Lui Geh To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org, knaack.h@gmx.de, pmeerw@pmeerw.net, gregkh@linuxfoundation.org, alexandru.Ardelean@analog.com, stefan.popa@analog.com, giuliano.belinassi@usp.br Cc: linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, kernel-usp@googlegroups.com Subject: [PATCH v2 1/2] staging: iio: ad7780: update voltage on read Message-ID: <1f7b2c6ee0e18b1c43a8b27f482b08313c52d4e9.1540506298.git.renatogeh@gmail.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The ad7780 driver previously did not read the correct device output, as it read an outdated value set at initialization. It now updates its voltage on read. Signed-off-by: Renato Lui Geh --- drivers/staging/iio/adc/ad7780.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c index b67412db0318..27972563bb6a 100644 --- a/drivers/staging/iio/adc/ad7780.c +++ b/drivers/staging/iio/adc/ad7780.c @@ -87,11 +87,15 @@ static int ad7780_read_raw(struct iio_dev *indio_dev, long m) { struct ad7780_state *st = iio_priv(indio_dev); + int voltage_uv = 0; switch (m) { case IIO_CHAN_INFO_RAW: return ad_sigma_delta_single_conversion(indio_dev, chan, val); case IIO_CHAN_INFO_SCALE: + voltage_uv = regulator_get_voltage(st->reg); + if (voltage_uv) + st->int_vref_mv = voltage_uv/1000; *val = st->int_vref_mv * st->gain; *val2 = chan->scan_type.realbits - 1; return IIO_VAL_FRACTIONAL_LOG2; -- 2.19.1