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=-18.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 6652FC2B9F4 for ; Thu, 17 Jun 2021 16:26:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43385613AA for ; Thu, 17 Jun 2021 16:26:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231845AbhFQQ2M (ORCPT ); Thu, 17 Jun 2021 12:28:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:47768 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229741AbhFQQ2M (ORCPT ); Thu, 17 Jun 2021 12:28:12 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D073F61166; Thu, 17 Jun 2021 16:26:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623947163; bh=VyboTr2R898YuGejhfoz0AN4EzZcTJ/CJGcIxUJuPiQ=; h=Subject:To:From:Date:From; b=vnQ/hL/BLoJR4uhFIuMOMrnqi6Ou1Eop7N0Hq0JTVibqdCkPjmwSrnRwSlk/WRi8A LvFMMZ/YP68Hck2ogFlHyihRVqkgvlGyFbQ4gsaaFQ04+yvO++yIsH5+PMxrnS5hm6 QeIz9OrYypgq68ZLw83TFBrBUP0lakXFvxUeOZ5M= Subject: patch "iio: accel: bmc150: Fix bma222 scale unit" added to staging-testing To: stephan@gerhold.net, Jonathan.Cameron@huawei.com, Stable@vger.kernel.org, linus.walleij@linaro.org From: Date: Thu, 17 Jun 2021 18:24:47 +0200 Message-ID: <162394708766126@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled iio: accel: bmc150: Fix bma222 scale unit to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the staging-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From 6e2a90af0b8d757e850cc023d761ee9a9492e2fe Mon Sep 17 00:00:00 2001 From: Stephan Gerhold Date: Fri, 11 Jun 2021 10:08:54 +0200 Subject: iio: accel: bmc150: Fix bma222 scale unit According to sysfs-bus-iio documentation the unit for accelerometer values after applying scale/offset should be m/s^2, not g, which explains why the scale values for the other variants in bmc150-accel do not match exactly the values given in the datasheet. To get the correct values, we need to multiply the BMA222 scale values by g = 9.80665 m/s^2. Fixes: a1a210bf29a1 ("iio: accel: bmc150-accel: Add support for BMA222") Reviewed-by: Linus Walleij Signed-off-by: Stephan Gerhold Link: https://lore.kernel.org/r/20210611080903.14384-2-stephan@gerhold.net Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/accel/bmc150-accel-core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index a3d08d713362..a80ee0fdabc5 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -1145,11 +1145,12 @@ static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = { /* * The datasheet page 17 says: * 15.6, 31.3, 62.5 and 125 mg per LSB. + * IIO unit is m/s^2 so multiply by g = 9.80665 m/s^2. */ - .scale_table = { {156000, BMC150_ACCEL_DEF_RANGE_2G}, - {313000, BMC150_ACCEL_DEF_RANGE_4G}, - {625000, BMC150_ACCEL_DEF_RANGE_8G}, - {1250000, BMC150_ACCEL_DEF_RANGE_16G} }, + .scale_table = { {152984, BMC150_ACCEL_DEF_RANGE_2G}, + {306948, BMC150_ACCEL_DEF_RANGE_4G}, + {612916, BMC150_ACCEL_DEF_RANGE_8G}, + {1225831, BMC150_ACCEL_DEF_RANGE_16G} }, }, [bma222e] = { .name = "BMA222E", -- 2.32.0