From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37B97267B92 for ; Wed, 21 May 2025 12:15:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747829760; cv=none; b=Hi9C9WXUxXvYwJ6WVQtHVgrJfiVW/O3L5ZfEev0bXXjWfJNQPH1uJ/zQoDd9NCKte82p1mAQsd+oljbyh/OkinJ5clBOkrPGMVFQIbCCXn80ffZs4EJtB6rOrqKRUe061agr/8Ofccr5LvRdPrDk6f27EpHP5ucY5XxzM3SAvqo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747829760; c=relaxed/simple; bh=K9Dn3vnTQ9QBcKTYKhUiaFJakmNUF2oQzU3fneB4TeY=; h=Subject:To:From:Date:Message-ID:MIME-Version:Content-Type; b=BMHqt+v89Ig2Bj+AlUBRROyndQwK1AQAtIYgJjYNAMzdsV2SKrKQIhfHQamuysFQm4rT7zTQIYVO6rXSsWfS29vTvTURjVPu+jG9N7fMOzI/u3kpEzowRx7jS4UPII47My74WX7dwvvn8qUTfzC+2IXIFtDr9UaTeJey4h0Cs5E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=oXe3XsGH; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="oXe3XsGH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EFB4EC4CEE7; Wed, 21 May 2025 12:15:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1747829759; bh=K9Dn3vnTQ9QBcKTYKhUiaFJakmNUF2oQzU3fneB4TeY=; h=Subject:To:From:Date:From; b=oXe3XsGHeHw9rR1tQjIg52/jZq6pKHkM9L5ZWOxP/7lup+IjNTAU4GZK265l4kW0/ DQld9CKF1aUgMM54FCnrpnLtfjJ2V8VCTYE33a0GKkpaLOzA7bFG2HAx7fNhkI0lYh 0eQtC/fFUojEllEA8HmN78eUK5HIiOs1EMSHvWzs= Subject: patch "iio: imu: inv_icm42600: Fix temperature calculation" added to char-misc-testing To: sean@geanix.com,Jonathan.Cameron@huawei.com,Stable@vger.kernel.org,jean-baptiste.maneyrol@tdk.com From: Date: Wed, 21 May 2025 14:15:49 +0200 Message-ID: <2025052149-luncheon-clarinet-1fc3@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is a note to let you know that I've just added the patch titled iio: imu: inv_icm42600: Fix temperature calculation to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-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 char-misc-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 e2f820014239df9360064079ae93f838ff3b7f8c Mon Sep 17 00:00:00 2001 From: Sean Nyekjaer Date: Fri, 2 May 2025 11:37:26 +0200 Subject: iio: imu: inv_icm42600: Fix temperature calculation >>From the documentation: "offset to be added to [Y]_raw prior toscaling by [Y]_scale" Offset should be applied before multiplying scale, so divide offset by scale to make this correct. Fixes: bc3eb0207fb5 ("iio: imu: inv_icm42600: add temperature sensor support") Signed-off-by: Sean Nyekjaer Acked-by: Jean-Baptiste Maneyrol Link: https://patch.msgid.link/20250502-imu-v1-1-129b8391a4e3@geanix.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c index 213cce1c3111..91f0f381082b 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c @@ -67,16 +67,18 @@ int inv_icm42600_temp_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; /* * T°C = (temp / 132.48) + 25 - * Tm°C = 1000 * ((temp * 100 / 13248) + 25) + * Tm°C = 1000 * ((temp / 132.48) + 25) + * Tm°C = 7.548309 * temp + 25000 + * Tm°C = (temp + 3312) * 7.548309 * scale: 100000 / 13248 ~= 7.548309 - * offset: 25000 + * offset: 3312 */ case IIO_CHAN_INFO_SCALE: *val = 7; *val2 = 548309; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_OFFSET: - *val = 25000; + *val = 3312; return IIO_VAL_INT; default: return -EINVAL; -- 2.49.0