Linux-Hwmon Archive on lore.kernel.org
 help / color / Atom feed
From: Florian Fainelli <f.fainelli@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com,
	Florian Fainelli <f.fainelli@gmail.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	Jean Delvare <jdelvare@suse.com>,
	Guenter Roeck <linux@roeck-us.net>,
	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> (raw)

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


             reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-07 23:09 Florian Fainelli [this message]
2019-05-07 23:09 ` [PATCH v3 1/2] firmware: arm_scmi: Fetch and store sensor scale Florian Fainelli
2019-05-07 23:09 ` [PATCH v3 2/2] hwmon: scmi: Scale values to target desired HWMON units Florian Fainelli
2019-05-07 23:41   ` Guenter Roeck
2019-05-08 11:35 ` [PATCH v3 0/2] " Sudeep Holla
2019-05-08 16:26   ` Florian Fainelli
2019-05-08 16:37     ` Guenter Roeck

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190507230917.21659-1-f.fainelli@gmail.com \
    --to=f.fainelli@gmail.com \
    --cc=bcm-kernel-feedback-list@broadcom.com \
    --cc=jdelvare@suse.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-hwmon@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@roeck-us.net \
    --cc=sudeep.holla@arm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Hwmon Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-hwmon/0 linux-hwmon/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-hwmon linux-hwmon/ https://lore.kernel.org/linux-hwmon \
		linux-hwmon@vger.kernel.org linux-hwmon@archiver.kernel.org
	public-inbox-index linux-hwmon


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-hwmon


AGPL code for this site: git clone https://public-inbox.org/ public-inbox