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=-2.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,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 BD114C04AAB for ; Tue, 7 May 2019 23:10:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85A4621019 for ; Tue, 7 May 2019 23:10:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Kpgce/hw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726563AbfEGXKO (ORCPT ); Tue, 7 May 2019 19:10:14 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:45394 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726091AbfEGXKO (ORCPT ); Tue, 7 May 2019 19:10:14 -0400 Received: by mail-pl1-f195.google.com with SMTP id a5so3967591pls.12; Tue, 07 May 2019 16:10:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=PP6+fndUIG4IIkxYrEQFsbVdqZqEU6ScA9UQeyIypuQ=; b=Kpgce/hwwS3m0yYRu4AlEIBbliaNKE7pCuG22IqFi2+0C/o1qPz3yPhkswJLNnR4dL EZNN9imgzu6r7+650jRs/Aa9mhk+wRmMPbxaHmoLuBmz2s7F2BgoOrpbmK1YfZOPIsXq +NOcryVJ4zdm3pxAaCe1NgXfCy0wRvmb2D8bMw6OgwsHnnD6NBCKt1MJWLIv+eYN9VSc SYjtUvJ2nzbHfmklqK6TppCggVKzIhE+5TrBAQg4YGp2LNddiQjH8sJVw/OQiC5Nykn4 gygKINbDiCpkvAFBltAOQDGC+NowC/gys4+axE/y9H0BeiF8Dod6/VluFGsW7/SBoRJk YFRQ== 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; bh=PP6+fndUIG4IIkxYrEQFsbVdqZqEU6ScA9UQeyIypuQ=; b=IapTzk1DZ4oIkeFzGVcXJjnR7Pbtea1EXlsFBleAGIlkUPj7PI+434+D2L4/qkWY1B YfrYGm5D8GHfuoMy0zanpupGFFcVOGfEIJ6COjrN4pTi8sIZv+X/ow50iH6yqnOTZWP1 AvHSDOkrooH1ff8xqcCIudaaU2THclXO+sjbaCceFw68lUXLgrl81IA0HHu9IXzLAKCM MW20vn/VQ9Nl6mqu9wWcNK+c4BkgVR4rHTFnVv2VOMs5EX5o8/ogT+Kok5j8AQzUFLyl fWXMZ1QUO/R7zhoKwddWxZAZ4Dl77NrEsqoMEho2wxQCa6x8yjaq3VG/Ollm/kvoW6zC caRA== X-Gm-Message-State: APjAAAWK15Ivdnrz/qHGVGXeN9gfPO1dW6vwX+X1YK8VkzrXD1XYFcQL yfVEDjfPQ97zODzgnfncT4Ytdz2Q X-Google-Smtp-Source: APXvYqyhousJMqD5DgnvXJFbKsTA00ZmyGSAFJJ6eypXpI5duu/6vzyNKl7HSIuPW2rqnyhPuGsdDg== X-Received: by 2002:a17:902:5acb:: with SMTP id g11mr7135217plm.198.1557270613082; Tue, 07 May 2019 16:10:13 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.250]) by smtp.gmail.com with ESMTPSA id w12sm7154742pfj.41.2019.05.07.16.10.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 07 May 2019 16:10:12 -0700 (PDT) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: bcm-kernel-feedback-list@broadcom.com, Florian Fainelli , Sudeep Holla , Jean Delvare , Guenter Roeck , linux-arm-kernel@lists.infradead.org, linux-hwmon@vger.kernel.org (open list:HARDWARE MONITORING) Subject: [PATCH v3 0/2] hwmon: scmi: Scale values to target desired HWMON units Date: Tue, 7 May 2019 16:09:15 -0700 Message-Id: <20190507230917.21659-1-f.fainelli@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sudeep, Guenter, This patch series adds support for scaling SCMI sensor values read from firmware. Sudeep, let me know if you think we should be treating scale == 0 as a special value to preserve some firmware compatibility (not that this would be desired). Changes in v3: - add a local __pow10 function to scmi-hwmon.c while a plan to provide a generic function is figured out. - add check on power > 18 which would overflow a 64-bit unsigned integer - use div64_u64() to properly divide a 64-bit quantity with an unsigned 64-bit quantity Changes in v2: - added a helper function in kernel.h: __pow10() - made the scale in scmi_sensor_info an s8 type, added defines for checking the sign bit and sign extending with a mask - simplify computations in hwmon driver Florian Fainelli (2): firmware: arm_scmi: Fetch and store sensor scale hwmon: scmi: Scale values to target desired HWMON units drivers/firmware/arm_scmi/sensors.c | 6 ++++ drivers/hwmon/scmi-hwmon.c | 43 ++++++++++++++++++++++++++++- include/linux/scmi_protocol.h | 1 + 3 files changed, 49 insertions(+), 1 deletion(-) -- 2.17.1