All of
 help / color / mirror / Atom feed
From: "Thomas Weißschuh" <>
To:, Sebastian Reichel <>,,,
	Mark Gross <>,
	Hans de Goede <>,
	Henrique de Moraes Holschuh <>
Cc: "Thomas Weißschuh" <>,,,,,,,,
Subject: [PATCH 0/4] power: supply: add charge_behaviour property (force-discharge, inhibit-charge)
Date: Wed, 24 Nov 2021 00:27:00 +0100	[thread overview]
Message-ID: <> (raw)


this series adds support for the charge_behaviour property to the power
subsystem and thinkpad_acpi driver.

As thinkpad_acpi has to use the 'struct power_supply' created by the generic
ACPI driver it has to rely on custom sysfs attributes instead of proper
power_supply properties to implement this property.

Patch 1: Adds the power_supply documentation and basic public API
Patch 2: Adds helpers to power_supply core to help drivers implement the
  charge_behaviour attribute
Patch 3: Adds support for force-discharge to thinkpad_acpi.
Patch 4: Adds support for inhibit-discharge to thinkpad_acpi.

Patch 3 and 4 are largely taken from other patches and adapted to the new API.
(Links are in the patch trailer)

Ognjen Galic:

Your S-o-b is on the original inhibit_charge and force_discharge patches.
I would like to add you as Co-developed-by but to do that it will also require
your S-o-b. Could you give your sign-offs for the new patches, so you can be
properly attributed?

Sebastian Reichel:

Currently the series does not actually support the property as a proper
powersupply property handled fully by power_supply_sysfs.c because there would
be no user for this property.

Previous discussions about the API:

v1 -> v2:

* Use sysfs_emit-APIs instead of plain sprintf
* More cecks for actual feature availability
* Validation of the written values
* Read inhibit-charge via BICG instead of PSSG (peak shift state)
* Don't mangle error numbers in charge_behaviour_store()

Open points:

Thomas Koch has observed that on a T450s with two batteries
inhibit-charge on BAT0 will affect both batteries and for BAT1 it is ignored
entirely, this seems to be a bug in the EC.
On my T460s with two batteries it works correctly.

Thomas Weißschuh (4):
  power: supply: add charge_behaviour attributes
  power: supply: add helpers for charge_behaviour sysfs
  platform/x86: thinkpad_acpi: support force-discharge
  platform/x86: thinkpad_acpi: support inhibit-charge

 Documentation/ABI/testing/sysfs-class-power |  14 ++
 drivers/platform/x86/thinkpad_acpi.c        | 191 +++++++++++++++++++-
 drivers/power/supply/power_supply_sysfs.c   |  51 ++++++
 include/linux/power_supply.h                |  16 ++
 4 files changed, 268 insertions(+), 4 deletions(-)

base-commit: 66f4beaa6c1d28161f534471484b2daa2de1dce0

             reply	other threads:[~2021-11-23 23:27 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-23 23:27 Thomas Weißschuh [this message]
2021-11-23 23:27 ` [PATCH v2 1/4] power: supply: add charge_behaviour attributes Thomas Weißschuh
2021-11-23 23:27 ` [PATCH v2 2/4] power: supply: add helpers for charge_behaviour sysfs Thomas Weißschuh
2021-11-23 23:27 ` [PATCH v2 3/4] platform/x86: thinkpad_acpi: support force-discharge Thomas Weißschuh
2021-11-23 23:27 ` [PATCH v2 4/4] platform/x86: thinkpad_acpi: support inhibit-charge Thomas Weißschuh
2021-11-25 18:04 ` [ibm-acpi-devel] [PATCH 0/4] power: supply: add charge_behaviour property (force-discharge, inhibit-charge) Kevin Locke
2021-12-03 21:33 ` Sebastian Reichel
2021-12-04 13:56   ` Hans de Goede
2021-12-16 15:41   ` Hans de Goede
2021-12-21 16:06   ` Hans de Goede
2021-12-04 16:04 ` Thomas Koch
  -- strict thread matches above, loose matches on Subject: below --
2021-11-13 10:42 Thomas Weißschuh
2021-11-16 16:56 ` Thomas Koch
2021-11-17 17:57   ` Thomas Weißschuh
2021-11-17 18:36     ` Thomas Koch

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:

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

  git send-email \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
    --subject='Re: [PATCH 0/4] power: supply: add charge_behaviour property (force-discharge, inhibit-charge)' \

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

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.