Commit face1c54 authored by Armin Wolf's avatar Armin Wolf Committed by Rafael J. Wysocki
Browse files

ACPI: bus: Indicate support for battery charge limiting thru _OSC 



The ACPI battery driver can handle the "charge limiting" state
of the battery, so the platform can advertise this state.

Indicate this by setting bit 19 ("Battery Charge Limiting Support")
when evaluating _OSC.

Tested on a Lenovo Ideapad S145-14IWL.

Signed-off-by: default avatarArmin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20240620191410.3646-2-W_Armin@gmx.de


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 526294e1

drivers/acpi/bus.c

+2 −0
Original line number Diff line number Diff line
@@ -329,6 +329,8 @@ static void acpi_bus_osc_negotiate_platform_control(void) 
		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;

	if (IS_ENABLED(CONFIG_ACPI_THERMAL))

		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_FAST_THERMAL_SAMPLING_SUPPORT;

	if (IS_ENABLED(CONFIG_ACPI_BATTERY))

		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_BATTERY_CHARGE_LIMITING_SUPPORT;



	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;

	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;

include/linux/acpi.h

+1 −0
Original line number Diff line number Diff line
@@ -576,6 +576,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); 
#define OSC_SB_CPC_FLEXIBLE_ADR_SPACE		0x00004000

#define OSC_SB_GENERIC_INITIATOR_SUPPORT	0x00020000

#define OSC_SB_NATIVE_USB4_SUPPORT		0x00040000

#define OSC_SB_BATTERY_CHARGE_LIMITING_SUPPORT	0x00080000

#define OSC_SB_PRM_SUPPORT			0x00200000

#define OSC_SB_FFH_OPR_SUPPORT			0x00400000