From patchwork Mon Nov 2 17:49:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 314275 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=-12.8 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=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 2E6A0C388F9 for ; Mon, 2 Nov 2020 17:50:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EBCBD22280 for ; Mon, 2 Nov 2020 17:50:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="jilr5NWG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726051AbgKBRuI (ORCPT ); Mon, 2 Nov 2020 12:50:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52186 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726027AbgKBRuI (ORCPT ); Mon, 2 Nov 2020 12:50:08 -0500 Received: from mail-lf1-x141.google.com (mail-lf1-x141.google.com [IPv6:2a00:1450:4864:20::141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50C16C061A04 for ; Mon, 2 Nov 2020 09:50:07 -0800 (PST) Received: by mail-lf1-x141.google.com with SMTP id i6so18567078lfd.1 for ; Mon, 02 Nov 2020 09:50:07 -0800 (PST) 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=jilr5NWGihlWgkg2pUaIK6f9uhoXKlUq0CrREz5XbM4t2WTToluxjqd1dqjzKNFyXw rFbklMSzb5AZxxoms2yoUEk3die/vQXbtHRmwe5LerAqWzSWJrxfqiRWMIJ/sQx7m3QG 3DfhUFenb/SSMGbhXfKBh2mNA1Wlsyf0aGCuO/YftpyhhWSTxdTVQnQt+iog5LwfWAeS KNZGTd8wokLK24AiMG2yCweN4uHOzddKdrJSejAlyQhhcwDcQV04poOnLxG8ppnBilZX LgjeOM4z5t9T3LUFERdcUuxRLk46PUrL7qETtF9abQVjXEtXwYhcMhY3DZoDK0HFljB1 pIQQ== 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=Piv/uvernA4iHhb5diS1E8/V3If0s4vXH0g5Ctigz7irBDl6dPAUq3JN31wVZpwxyG RMPIvoHUPkk0dZTBDUCn4tEdTgPV9RqIz4lNSYB/sbwk8PFILTPTADlEEl2yzWeX2SvW fq+QP+0sm+HgfRWKQFcz9XQ4cD3EB1gDrTGh9AvLafwkTXy9Eo+CYVsdzm+e95puEnLR M0Nl2GyaP0nbTqW06gDtB7eI+STw8amSRts/per6PjyM5EL9magUShhVZMhyZzzkOGON N7UOM466ZNx+VoafgYZeuwy14/eKe1emNd1Ji4e8EYjWnCtw91khecb04KpvhKz9i6Yo MgiQ== X-Gm-Message-State: AOAM530NQxuwDnzo7xQEV3zXWJQeLvNMer0I24XoDuy8vUQBs/WP1P7V drz+DXc/ILnu6A3a2CYAekZ3Ow== X-Google-Smtp-Source: ABdhPJw11w3m/cU925dZCjrCAf5j93I86cy46wxiwAr9UjFfbGm390nM673JEyS7GZg5zqTPlsx30A== X-Received: by 2002:a19:6912:: with SMTP id e18mr5862809lfc.427.1604339405825; Mon, 02 Nov 2020 09:50:05 -0800 (PST) Received: from eriador.lan ([94.25.229.254]) by smtp.gmail.com with ESMTPSA id r7sm2516163lfc.206.2020.11.02.09.50.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Nov 2020 09:50:05 -0800 (PST) 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 , Jishnu Prakash , Jonathan Cameron Subject: [PATCH v9 04/15] iio: adc: qcom-vadc-common: use fixp_linear_interpolate Date: Mon, 2 Nov 2020 20:49:39 +0300 Message-Id: <20201102174950.1148498-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201102174950.1148498-1-dmitry.baryshkov@linaro.org> References: <20201102174950.1148498-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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;