From patchwork Thu Sep 3 13:21:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 256854 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=-13.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 03F77C433E9 for ; Thu, 3 Sep 2020 15:04:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D4F8B2072A for ; Thu, 3 Sep 2020 15:04:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="oKaX/2FC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729466AbgICPDz (ORCPT ); Thu, 3 Sep 2020 11:03:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729028AbgICN60 (ORCPT ); Thu, 3 Sep 2020 09:58:26 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64F50C06123A for ; Thu, 3 Sep 2020 06:21:27 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id b19so3627331lji.11 for ; Thu, 03 Sep 2020 06:21:27 -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=cQm3Ei3RR3aCnHJxoCJd7GJ9tvCqsDDg7qVL7cbFNi0=; b=oKaX/2FC4xi8AE7Tbxleo6PkivkbjAs99jM9XHwwgd/JkCPtx7AsDJpisNurdXjAML HV3qLDwG7aixk5Sjw9q2R46BnWfN/LmST0aWGeZxQt4xEEs2yXkB7FyD2TKZgNatA9AM s5lQWS3jU7k2pJUW/yF8PzRbyvDQCvzB6zuINPPYkVWfhyMZWDqEniEFtL3QDRGL1iHO hlGIQci4gMdWmernvAlbqwZsZ/TuI6FaqF/63gnR4jLato/32yFOvDFRwVeUbOVGGQNr KyszmvxYZpLU1tQM3ziJ/SvokV1dNgKFnNWoAPcIHD9NeyY9Ss7ArN294b2bL1+hUyMu q3nQ== 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=cQm3Ei3RR3aCnHJxoCJd7GJ9tvCqsDDg7qVL7cbFNi0=; b=IZvu3U5skLKdHyUl4cyWPZ32XsgdKVH/NhEmXE2FL/pTDLgk2jCVGXzwYDD6PNbskI 9S8t+fNErcuht9kjBNeHVtP4hEMtn7Vg1c5U9n4F2Ocl4rv858WPBV+Ian835/1Mw0gL Wy4Uj0X7fyZ84AQQHpcp+vfwp0zNmxVfnKACgkFuai21bPTRTLqApJNI1D8QqrH3ZgMy MyevcUJnQjHJqW/TwY8KlexmYbHKWYvpM4wwWBOWc90H0At+WCJi/flb19tYc7MsEMmE iNK/E87HcBMucTtlrCdffaJTo8sThUORhu7zFgm3c0uj8CDGj6D+GiAS3SQFge3LH5ue SPEw== X-Gm-Message-State: AOAM530Q7uikux3hFVyGpsAPqkpm2cDGK86XMmqVtf0FBEKIyLmaSzmQ PmyCfauZ5d4b5xdVUI0SszIdow== X-Google-Smtp-Source: ABdhPJzjF8ZPvpGo04UHTx/UIh+OfSiygAYlTKZKHI2sYRwiJrGhasv1wAzqFMrbfhl0R4dK4V3fNg== X-Received: by 2002:a2e:9d95:: with SMTP id c21mr1263833ljj.359.1599139285839; Thu, 03 Sep 2020 06:21:25 -0700 (PDT) Received: from eriador.lan ([188.162.64.138]) by smtp.gmail.com with ESMTPSA id e23sm584220lfj.80.2020.09.03.06.21.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2020 06:21:25 -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 Subject: [PATCH v2 4/9] iio: adc: qcom-vadc-common: use fixp_linear_interpolate Date: Thu, 3 Sep 2020 16:21:04 +0300 Message-Id: <20200903132109.1914011-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200903132109.1914011-1-dmitry.baryshkov@linaro.org> References: <20200903132109.1914011-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Use new function fixp_linear_interpolate() instead of hand-coding the linar interpolation. Signed-off-by: Dmitry Baryshkov --- 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;