From: Sebastian Reichel <sebastian.reichel@collabora.com>
To: Sebastian Reichel <sre@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael@kernel.org>
Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel@collabora.com,
Sebastian Reichel <sebastian.reichel@collabora.com>
Subject: [PATCHv1 02/19] power: supply: core: add capacity error margin property
Date: Wed, 13 May 2020 20:55:58 +0200 [thread overview]
Message-ID: <20200513185615.508236-3-sebastian.reichel@collabora.com> (raw)
In-Reply-To: <20200513185615.508236-1-sebastian.reichel@collabora.com>
Add a property for reporting the error margin expected
by fuel gauge chips.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
Documentation/ABI/testing/sysfs-class-power | 15 +++++++++++++++
drivers/power/supply/power_supply_sysfs.c | 1 +
include/linux/power_supply.h | 1 +
3 files changed, 17 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index bf3b48f022dc..2f896555ae23 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -74,6 +74,21 @@ Description:
Access: Read, Write
Valid values: 0 - 100 (percent)
+What: /sys/class/power_supply/<supply_name>/capacity_error_margin
+Date: April 2019
+Contact: linux-pm@vger.kernel.org
+Description:
+ Battery capacity measurement becomes unreliable without
+ recalibration. This values provides the maximum error
+ margin expected to exist by the fuel gauge in percent.
+ Values close to 0% will be returned after (re-)calibration
+ has happened. Over time the error margin will increase.
+ 100% means, that the capacity related values are basically
+ completely useless.
+
+ Access: Read
+ Valid values: 0 - 100 (percent)
+
What: /sys/class/power_supply/<supply_name>/capacity_level
Date: June 2009
Contact: linux-pm@vger.kernel.org
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index d21b4e0edf38..e664774a2d1e 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -178,6 +178,7 @@ static struct power_supply_attr power_supply_attrs[] = {
POWER_SUPPLY_ATTR(CAPACITY),
POWER_SUPPLY_ATTR(CAPACITY_ALERT_MIN),
POWER_SUPPLY_ATTR(CAPACITY_ALERT_MAX),
+ POWER_SUPPLY_ATTR(CAPACITY_ERROR_MARGIN),
POWER_SUPPLY_ENUM_ATTR(CAPACITY_LEVEL),
POWER_SUPPLY_ATTR(TEMP),
POWER_SUPPLY_ATTR(TEMP_MAX),
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 1f60731ec7fe..453a85f25635 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -139,6 +139,7 @@ enum power_supply_property {
POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, /* in percents! */
POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, /* in percents! */
+ POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN, /* in percents! */
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_MAX,
--
2.26.2
next prev parent reply other threads:[~2020-05-13 18:56 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 18:55 [PATCHv1 00/19] Improve SBS battery support Sebastian Reichel
2020-05-13 18:55 ` [PATCHv1 01/19] kobject: increase allowed number of uevent variables Sebastian Reichel
2020-05-14 6:11 ` Greg Kroah-Hartman
2020-05-15 14:45 ` Emil Velikov
2020-05-13 18:55 ` Sebastian Reichel [this message]
2020-05-13 18:55 ` [PATCHv1 03/19] power: supply: core: add manufacture date properties Sebastian Reichel
2020-05-15 14:47 ` Emil Velikov
2020-05-15 15:14 ` Sebastian Reichel
2020-05-15 16:01 ` Emil Velikov
2020-05-13 18:56 ` [PATCHv1 04/19] power: supply: core: add POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 05/19] power: supply: sbs-battery: Add TI BQ20Z65 support Sebastian Reichel
2020-05-28 2:37 ` Rob Herring
2020-05-13 18:56 ` [PATCHv1 06/19] power: supply: sbs-battery: add POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN support Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 07/19] power: supply: sbs-battery: simplify read_read_string_data Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 08/19] power: supply: sbs-battery: add PEC support Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 09/19] power: supply: sbs-battery: add POWER_SUPPLY_PROP_CURRENT_AVG support Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 10/19] power: supply: sbs-battery: Improve POWER_SUPPLY_PROP_TECHNOLOGY support Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 11/19] power: supply: sbs-battery: add POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT/VOLTAGE_MAX support Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 12/19] power: supply: sbs-battery: add MANUFACTURE_DATE support Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 13/19] power: supply: sbs-battery: add POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED support Sebastian Reichel
2020-05-15 15:35 ` Emil Velikov
2020-05-13 18:56 ` [PATCHv1 14/19] power: supply: sbs-battery: fix idle battery status Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 15/19] power: supply: sbs-battery: add ability to disable charger broadcasts Sebastian Reichel
2020-05-15 14:57 ` Emil Velikov
2020-05-13 18:56 ` [PATCHv1 16/19] power: supply: sbs-battery: switch from of_property_* to device_property_* Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 17/19] power: supply: sbs-battery: switch to i2c's probe_new Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 18/19] power: supply: sbs-battery: constify power-supply property array Sebastian Reichel
2020-05-13 18:56 ` [PATCHv1 19/19] dt-bindings: power: sbs-battery: Convert to yaml Sebastian Reichel
2020-05-28 2:40 ` Rob Herring
2020-05-28 22:44 ` [PATCHv1 00/19] Improve SBS battery support Sebastian Reichel
2020-05-29 16:27 ` Pavel Machek
2020-06-01 21:57 ` Sebastian Reichel
[not found] ` <CGME20200601104027eucas1p2b076ee860520d709e8178c41550653f7@eucas1p2.samsung.com>
2020-06-01 10:40 ` Marek Szyprowski
2020-06-01 17:05 ` Sebastian Reichel
2020-06-02 7:17 ` Marek Szyprowski
2020-06-02 18:01 ` Sebastian Reichel
2020-06-03 18:49 ` Marek Szyprowski
Reply instructions:
You may reply publicly 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=20200513185615.508236-3-sebastian.reichel@collabora.com \
--to=sebastian.reichel@collabora.com \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=kernel@collabora.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=rafael@kernel.org \
--cc=robh+dt@kernel.org \
--cc=sre@kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).