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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 361D6C43461 for ; Thu, 3 Sep 2020 19:38:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1186B20767 for ; Thu, 3 Sep 2020 19:38:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XDTyrwxi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728358AbgICTii (ORCPT ); Thu, 3 Sep 2020 15:38:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727065AbgICTii (ORCPT ); Thu, 3 Sep 2020 15:38:38 -0400 Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7998C061244; Thu, 3 Sep 2020 12:38:36 -0700 (PDT) Received: by mail-pg1-x541.google.com with SMTP id e33so2951888pgm.0; Thu, 03 Sep 2020 12:38:36 -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=1+PRg9GJGmbl7YnYKQJ3ieRwri+lWyr1AoHJtFqqzfU=; b=XDTyrwxiwUj7AHZETwvXFoo35HWRbPoXlwP/FbsBaf6Al2eQNbsHAnW+0iPGFKbmaq nejcoLn/Zvm4JkTzGT9ua9vZRd/ftmciHfydFU1GK9huJ3nv6DaGNijFsDrmexhGLvAu emVMGNOzKzXTVtFthAPtR4nRpYMqXH/ST309n91/2L1MKENf019On8PhBFSOrtLf/gCX ffLEEbt4SE1uIz0SujJGf0pY5KCDVnTil+FEmAIHFUteTw07DRYBOAAHkK3gm+Oj3woC eoz0EEEWXe9xcZkHgoE3bt51DEt6DCzeQEKYCEUBqjuV8ShMdJqaJE+yEyooSLLBwnO3 e2dQ== 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=1+PRg9GJGmbl7YnYKQJ3ieRwri+lWyr1AoHJtFqqzfU=; b=cKygzNboLj+n/YHMY1sb/jMD+W8XQS1M5VjcUyAE7P69VUozCeYSZu2h+JegBeiI6E Bjz7HJ4I6qlFB1GjyoPa56Wq0sqeSWWcQSRk0lHqwwu/yTr4Z7Zc7+uD5ZLNOLUGBLs2 42qWP2joF0CsQBwjC4TFUYOmGhp0STyOzrKNGgyDeu7SurXs4bqHmNzRdP151fP/bbQs V4J1Mi0quNUUJjDHe9aY6CvopHFTzKJ/iCF2hpx8dKohOH/jtd+TVdTttJx3WeR2JyyR 4qXVyMvgeq68e8nar1mG15DwsugBcLXhv8IPu2087R8kfS0Y90l5e4qBsDJsN/zP27uf 6O7w== X-Gm-Message-State: AOAM531DTBfD1JkLWeYuWhY0AnVNqZKJ9Gm+dQ0O3G5XNYV/8P2VcGAE fh5rtks4UYXc4SYg485eLmq58CS/Q7sOXM01NkM= X-Google-Smtp-Source: ABdhPJyVxxnHI3bjYTsaxgfjK/z4EYEYmnWMZOirCUvB2jFfpE6i5/Rp3uLLOtnEo459xCBB5O5oXfrTaEL7cNefMGY= X-Received: by 2002:a17:902:b289:: with SMTP id u9mr5445613plr.226.1599161915506; Thu, 03 Sep 2020 12:38:35 -0700 (PDT) MIME-Version: 1.0 References: <20200903132109.1914011-1-dmitry.baryshkov@linaro.org> <20200903132109.1914011-5-dmitry.baryshkov@linaro.org> In-Reply-To: <20200903132109.1914011-5-dmitry.baryshkov@linaro.org> From: Andy Shevchenko Date: Thu, 3 Sep 2020 22:38:18 +0300 Message-ID: Subject: Re: [PATCH v2 4/9] iio: adc: qcom-vadc-common: use fixp_linear_interpolate To: Dmitry Baryshkov Cc: Andy Gross , Bjorn Andersson , Rob Herring , Zhang Rui , Daniel Lezcano , Amit Kucheria , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , linux-arm-msm@vger.kernel.org, Linux PM , devicetree , linux-iio Content-Type: text/plain; charset="UTF-8" Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org On Thu, Sep 3, 2020 at 5:33 PM Dmitry Baryshkov wrote: > > Use new function fixp_linear_interpolate() instead of hand-coding the > linar interpolation. ... > /* 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); I'm wondering if it's related to linear_range.h API https://elixir.bootlin.com/linux/latest/source/include/linux/linear_range.h > } > > return 0; -- With Best Regards, Andy Shevchenko