From patchwork Thu Sep 10 13:59:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 11769373 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EE75F746 for ; Thu, 10 Sep 2020 21:27:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CD857221E2 for ; Thu, 10 Sep 2020 21:27:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="WF0RXK6c" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728193AbgIJV1w (ORCPT ); Thu, 10 Sep 2020 17:27:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731062AbgIJOJf (ORCPT ); Thu, 10 Sep 2020 10:09:35 -0400 Received: from mail-lj1-x242.google.com (mail-lj1-x242.google.com [IPv6:2a00:1450:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C03FEC061387 for ; Thu, 10 Sep 2020 07:00:20 -0700 (PDT) Received: by mail-lj1-x242.google.com with SMTP id s205so8314335lja.7 for ; Thu, 10 Sep 2020 07:00:20 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=SyrNRlrzgocwFtm4m1D+vgyjZWlJZcz7p/Dz+/oWD3I=; b=WF0RXK6c8RUr2Gomx+JVCl+LBDxVEGYpbxBgRK8Gx0gn8zhmt3BN9srE7t8MhbR36t H7R4z8lqw02iAe7fQQl7pweGAvYqC3fPDjYtGI8e2ECcgpCdaB/1AKXbQKiMLsUopkTr 7olOfskIpfCiUTYTTPob51oBFFRpjtg7JncF5hGhOSp9s2XtVjIFh8bwhevkxBps24P4 tv0msa7ig32jl0QSDxoWT5ZNrZulNIKpnmO/IvQeXz1vRGqkLtKe5LddEJor6fQ9Bone 5TpcKBzHslKPHz2C4xhDjmx+5SWWmvqLHZuIv3NN24XoWDFGfttsWxBYXtv4N6AhRV4D yVHg== 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:mime-version:content-transfer-encoding; bh=SyrNRlrzgocwFtm4m1D+vgyjZWlJZcz7p/Dz+/oWD3I=; b=QHN0ElDp2LaNoHl27Wym+M5UB90fSvFgQG74+Sry4HtNmP1ve/aEuSu1qsbYbnkd2Q VfWxJby7VE39vN1nkB0I3yL4b17+tugVdorkZ2PPxP11JxgFazTHlquTD9zB9FRJQKqs 28uEJrjBPQqX8bAZ+bGck4rH4WKVm6DHZ+ZFey74NnyIJAaiw7bDQ39d/O2LupTrRvw3 y39wbXGx6pSi35I2rZkSqGqQ5cowOwt+WBKnDswDzjH3vcEgA0fCTXfi6zRTzq/Qr9F5 ZEpZScnkslvIeyfkBSwjiojz18QoF7ckaYIlX2DovgQVyeVyYT6f/QXJAl9dZNMLdio6 N2xQ== X-Gm-Message-State: AOAM530fu8FvIQJwZIm2XKcO6K0SNDi2b9W3XyMndWzHN7594GeZRTj8 /MpRS2Xzug79IQY4eedH9gN1Dw== X-Google-Smtp-Source: ABdhPJxgGEjVc/OkQUNiQgHV7aJ4mQW61K48I8OB1nai+9z6Hn0jDTNFqKlWVWIg9zxx3w/A1KjPyw== X-Received: by 2002:a2e:b4ba:: with SMTP id q26mr4146902ljm.79.1599746418934; Thu, 10 Sep 2020 07:00:18 -0700 (PDT) Received: from eriador.lan ([188.162.64.156]) by smtp.gmail.com with ESMTPSA id t82sm1367646lff.43.2020.09.10.07.00.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Sep 2020 07:00:18 -0700 (PDT) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Rob Herring , Zhang Rui , Daniel Lezcano , Amit Kucheria , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler Cc: linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, Manivannan Sadhasivam , Jonathan Cameron Subject: [PATCH v4 05/10] iio: adc: qcom-vadc-common: use fixp_linear_interpolate Date: Thu, 10 Sep 2020 16:59:55 +0300 Message-Id: <20200910140000.324091-6-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200910140000.324091-1-dmitry.baryshkov@linaro.org> References: <20200910140000.324091-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Use new function fixp_linear_interpolate() instead of hand-coding the linear interpolation. Signed-off-by: Dmitry Baryshkov Reviewed-by: Jonathan Cameron --- drivers/iio/adc/qcom-vadc-common.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/qcom-vadc-common.c b/drivers/iio/adc/qcom-vadc-common.c index d11f3343ad52..40d77b3af1bb 100644 --- a/drivers/iio/adc/qcom-vadc-common.c +++ b/drivers/iio/adc/qcom-vadc-common.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include #include @@ -368,10 +369,9 @@ static int qcom_vadc_map_voltage_temp(const struct vadc_map_pt *pts, } else { /* result is between search_index and search_index-1 */ /* interpolate linearly */ - *output = (((s32)((pts[i].y - pts[i - 1].y) * - (input - pts[i - 1].x)) / - (pts[i].x - pts[i - 1].x)) + - pts[i - 1].y); + *output = fixp_linear_interpolate(pts[i - 1].x, pts[i - 1].y, + pts[i].x, pts[i].y, + input); } return 0;