kernel/linux.git/include/linux/power_supply.h, branch v7.3-rc1

power: supply: add stubs for notifier registration helpers

2026-08-07T00:43:11+00:00

power_supply_reg_notifier() and power_supply_unreg_notifier() are declared unconditionally, with no fallback when CONFIG_POWER_SUPPLY is disabled. Any driver that calls them unconditionally fails to link: ERROR: modpost: "power_supply_unreg_notifier" [drivers/usb/dwc3/dwc3.ko] undefined! ERROR: modpost: "power_supply_reg_notifier" [drivers/usb/dwc3/dwc3.ko] undefined! Fix this by adding stub functions for these calls. Fixes: 7c87ef27af79 ("usb: dwc3: avoid probe deferral when USB power supply is not available") Reported-by: Randy Dunlap Closes: https://lore.kernel.org/all/a9dd53b3-0666-404a-99e0-76617ae3f944@infradead.org/ Signed-off-by: Elson Serrao Tested-by: Randy Dunlap Acked-by: Randy Dunlap Link: https://patch.msgid.link/20260805185401.3625514-1-elson.serrao@oss.qualcomm.com Signed-off-by: Sebastian Reichel

power: supply: Add registration init callback

2026-07-27T18:32:38+00:00

Some battery drivers need to consume monitored-battery data before their power_supply is visible. That lets them prepare hardware configuration from parsed battery information without racing userspace exposure. power_supply_get_battery_info() already runs in __power_supply_register() for battery devices before device_add(). Add an optional descriptor init callback after driver data and battery info are available. The callback runs in sleepable process context while the power supply is still unpublished. Keep the callback synchronous: it must not publish changes or start asynchronous activity that can access the power supply before registration completes. Require callbacks to return zero or a negative errno. Defensively reject positive returns so registration cannot return an invalid error pointer. Assisted-by: OpenCode:gpt-5.6-sol Signed-off-by: Vincent Cloutier Link: https://patch.msgid.link/20260727011319.621794-2-vincent.cloutier@icloud.com Signed-off-by: Sebastian Reichel

Merge tag 'ib-psy-array-helpers-for-v7.3-signed' into psy-next

2026-07-25T23:38:07+00:00

Immutable branch for battery array helpers to be used by the USB-C state machine. Signed-off-by: Sebastian Reichel

power: supply: Add helpers to get and put arrays of power supply handles

2026-07-25T23:31:43+00:00

Add power_supply_get_system_batteries() to allow drivers to obtain a list of registered battery type power supply references in the system. Also add power_supply_put_system_batteries() to perform cleanup after the former function is called. Signed-off-by: Amit Sunil Dhamne Reviewed-by: Hans de Goede Link: https://patch.msgid.link/20260714-batt-status-v5-1-9de4aa900b69@google.com Signed-off-by: Sebastian Reichel

power: supply: leds: create triggers based on properties, not type

2026-07-21T20:28:11+00:00

Currently only battery power supplies get triggers for other properties and other supplies only get the online trigger. This changes it to provide the triggers for any power supply depending on what properties are available. Batteries will still get the same triggers if the properties are there, but now other power supplies can get the triggers too. Signed-off-by: Steffen Dirkwinkel Link: https://patch.msgid.link/20260625-std-power-supply-triggers-v1-1-d80db570d329@beckhoff.com Signed-off-by: Sebastian Reichel

power: supply: Add PbAc, NiZn, RAM, and ZnAr support

2026-07-21T20:28:11+00:00

Add four new members to the POWER_SUPPLY_TECHNOLOGY enum and sysfs interface to represent the Smart Battery Data Specification v1.1 (Section 5.1.30 DeviceChemistry) battery types: - Lead Acid (PbAc) - Nickel Zinc (NiZn) - Rechargeable Alkaline-Manganese (RAM) - Zinc Air (ZnAr) Update documentation to express these types. Update ABI testing for these types. Link: https://sbs-forum.org/specs/sbdat110.pdf Signed-off-by: Boris Shtrasman Link: https://patch.msgid.link/20260624135718.286771-2-borissh1983@gmail.com Signed-off-by: Sebastian Reichel

power: supply: Add PD SPR AVS support to USB type enum

2026-03-18T15:08:39+00:00

Add two new members to the power_supply_usb_type to represent the USB Power Delivery (PD) Standard Power Range (SPR) Adjustable Voltage Supply (AVS) charging types: POWER_SUPPLY_USB_TYPE_PD_SPR_AVS: For devices supporting only the PD SPR AVS type. POWER_SUPPLY_USB_TYPE_PD_PPS_SPR_AVS: For devices that support both PD Programmable Power Supply (PPS) and PD SPR AVS. Signed-off-by: Badhri Jagan Sridharan Link: https://patch.msgid.link/20260316150301.3892223-3-badhri@google.com Signed-off-by: Greg Kroah-Hartman

power: supply: core: Add state_of_health power supply property

2025-09-17T23:01:03+00:00

Add state_of_health power supply property to represent battery health percentage. Signed-off-by: Fenglin Wu Signed-off-by: Sebastian Reichel

power: supply: core: Add resistance power supply property

2025-09-17T23:01:03+00:00

Some battery drivers provide the ability to export internal resistance as a parameter. Add internal_resistance power supply property for that purpose. Signed-off-by: Fenglin Wu Signed-off-by: Sebastian Reichel

Merge tag 'for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

2025-08-01T04:39:01+00:00

Pull power supply and reset updates from Sebastian Reichel: "Power-supply core: - battery-info: replace any DT specific bits with fwnode usage - replace any device-tree code with generic fwnode based handling Power-supply drivers: - ug3105_battery: use battery-info API - qcom_battmgr: report capacity - qcom_battmgr: support LiPo battery reporting - add missing missing power-supply ref to a bunch of DT bindings - update drivers regarding pm_runtime_autosuspend() usage - misc minor fixes and cleanups Reset drivers: - misc minor cleanups" * tag 'for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (32 commits) power: supply: core: fix static checker warning power: supply: twl4030_charger: Remove redundant pm_runtime_mark_last_busy() calls power: supply: bq24190: Remove redundant pm_runtime_mark_last_busy() calls MAINTAINERS: rectify file entry in QUALCOMM SMB CHARGER DRIVER power: supply: max1720x correct capacity computation MAINTAINERS: add myself as smbx charger driver maintainer power: supply: pmi8998_charger: rename to qcom_smbx power: supply: qcom_pmi8998_charger: fix wakeirq power: supply: max14577: Handle NULL pdata when CONFIG_OF is not set power: return the correct error code power: reset: POWER_RESET_TORADEX_EC should depend on ARCH_MXC power: supply: cpcap-charger: Fix null check for power_supply_get_by_name power: supply: bq25980_charger: Constify reg_default array power: supply: bq256xx_charger: Constify reg_default array power: reset: at91-sama5d2_shdwc: Refactor wake-up source logging to use dev_info power: reset: qcom-pon: Rename variables to use generic naming power: supply: qcom_battmgr: Add lithium-polymer entry power: supply: qcom_battmgr: Report battery capacity power: supply: bq24190: Free battery_info power: supply: ug3105_battery: Switch to power_supply_batinfo_ocv2cap() ...