kernel/drivers/gpu/drm/amd/include/amd_acpi.h, branch master

drm/amdgpu: add UMA allocation setting helpers

2026-01-05T21:59:58Z

On some platforms, UMA allocation size can be set using the ATCS methods. Add helper functions to interact with this functionality. Co-developed-by: Mario Limonciello (AMD) Signed-off-by: Mario Limonciello (AMD) Reviewed-by: Alex Deucher Signed-off-by: Yo-Jung Leo Lin (AMD) Signed-off-by: Alex Deucher

drm/amdgpu: parse UMA size-getting/setting bits in ATCS mask

2026-01-05T21:59:58Z

The capabilities of getting and setting VRAM carveout size are exposed in the ATCS mask. Parse and store these capabilities for future use. Co-developed-by: Mario Limonciello (AMD) Signed-off-by: Mario Limonciello (AMD) Reviewed-by: Alex Deucher Signed-off-by: Yo-Jung Leo Lin (AMD) Signed-off-by: Alex Deucher

drm/amd: Pass luminance data to amdgpu_dm_backlight_caps

2025-03-05T15:42:42Z

The ATIF method on some systems will provide a backlight curve. Pass this curve into amdgpu_dm add it to the structures. Reviewed-by: Alex Hung Link: https://lore.kernel.org/r/20250228185145.186319-3-mario.limonciello@amd.com Signed-off-by: Mario Limonciello Signed-off-by: Alex Deucher

drm/amdgpu: support atcs method powershift (v4)

2021-06-02T02:36:48Z

add support to handle ATCS method for power shift control. used to communicate dGPU device state to SBIOS. V2: use defined acpi func for checking psc support (Lijo) fix alignment (Shashank) V3: rebased on unified ATCS handling (Alex) V4: rebased on ATPX/ATCS structures global (Alex) Signed-off-by: Sathishkumar S Reviewed-by: Alex Deucher Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amd: Query and use ACPI backlight caps

2018-11-26T20:54:39Z

ACPI ATIF has a function called query backlight transfer characteristics. Among the information returned by this function is the minimum and maximum input signals for the backlight Call that function on ACPI init. When DM backlight device is updated, copy over the backlight caps into DM, but only once. Use the backlight caps in the backlight-to-dc calculation Signed-off-by: David Francis Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher

drm/amd: update ATIF functions in AMD ACPI header

2018-11-26T20:54:38Z

The ACPI interface in AMD was a few years out of date and contained some unused and deprecated functions Remove functions: Select Active Displays, Get Lid State, Get TV Standard, Set TV Standard, Get Panel Expansion Mode, Set Panel Expansion Mode, Get Graphics Device Types Add functions: Query Backlight Transfer Characteristics, Ready To Undock Notification Changed functions: Get System Parameters, Get System BIOS Requests All changes are right from the standard ATI ACPI Control Methods V0.44 Signed-off-by: David Francis Reviewed-by: Harry Wentland Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: add new ATIF ACPI method

2017-03-30T03:53:49Z

Used for fetching external GPU information. Signed-off-by: Alex Deucher

drm/amdgpu: update radeon acpi header

2016-02-26T19:17:04Z

Add some new defs for ATPX. Signed-off-by: Alex Deucher

drm/amdgpu: mv amdgpu_acpi.h to amd/include/amd_acpi.h

2015-12-21T21:42:05Z

This will be shared with the new powerplay module. Signed-off-by: Rex Zhu Reviewed-by: Jammy Zhou Reviewed-by: Alex Deucher