linux.git/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile, branch master

drm/amd/display: add cursor module

2026-07-28T23:17:30+00:00

[WHAT]
Group the cursor policy and validation helpers from amdgpu_dm.c
into a dedicated amdgpu_dm_cursor.c and amdgpu_dm_cursor.h.
The moved functions are:

  dm_check_cursor_fb, dm_check_native_cursor_state,
  dm_should_update_native_cursor, dm_get_oriented_plane_size,
  dm_get_plane_scale, dm_plane_color_pipeline_active,
  dm_crtc_get_cursor_mode.

The cursor helpers exposed by amdgpu_dm_cursor.h are called from
amdgpu_dm.c, so give the three that lacked a namespace prefix the
standard amdgpu_dm_ prefix: amdgpu_dm_check_native_cursor_state,
amdgpu_dm_should_update_native_cursor and
amdgpu_dm_crtc_get_cursor_mode.

The descending-zpos plane iterator shared by these functions and
amdgpu_dm_atomic_check (the for_each_oldnew_plane_in_descending_zpos
macro and its __get_next_zpos helper) moves to amdgpu_dm.h, with
the helper renamed amdgpu_dm_get_next_zpos and made non-static.

Relocate the corresponding KUnit tests into amdgpu_dm_cursor_test.c.

No functional change.

Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Hung 
Signed-off-by: Fangzhi Zuo 
Tested-by: Dan Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: add FreeSync/VRR module

2026-07-28T23:17:30+00:00

[WHAT]
Group the FreeSync/VRR helpers from amdgpu_dm.c into a dedicated
amdgpu_dm_freesync.c and amdgpu_dm_freesync.h. The moved functions are:

  is_dc_timing_adjust_needed, is_timing_unchanged_for_freesync,
  set_freesync_fixed_config, reset_freesync_config_for_crtc,
  get_freesync_config_for_crtc, update_freesync_state_on_stream,
  update_stream_irq_parameters, amdgpu_dm_handle_vrr_transition.

The FreeSync/VRR helpers exposed by amdgpu_dm_freesync.h are called
from amdgpu_dm.c, so give the seven that lacked a namespace prefix the
standard amdgpu_dm_ prefix:

Relocate the corresponding KUnit tests into amdgpu_dm_freesync_test.c.

No functional change.

Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Hung 
Signed-off-by: Fangzhi Zuo 
Tested-by: Dan Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Extract connector and encoder code to amdgpu_dm_connector

2026-06-17T20:15:39+00:00

Move connector lifecycle functions (init, detect, mode validation,
property handling, EDID parsing, hotplug processing) and encoder
functions (init, destroy, atomic_check, helper_funcs) from amdgpu_dm.c
to amdgpu_dm_connector.c.

No functional change intended.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Hung 
Signed-off-by: Chenyu Chen 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Extract DMUB code to amdgpu_dm_dmub

2026-06-17T20:15:26+00:00

Move DMUB-related functions and firmware defines from amdgpu_dm.c
into new amdgpu_dm_dmub.c and amdgpu_dm_dmub.h files to reduce
the size of amdgpu_dm.c and improve code organization.

No functional change intended.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Hung 
Signed-off-by: Chenyu Chen 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Extract audio code to amdgpu_dm_audio

2026-06-17T20:15:20+00:00

Move audio component, init/fini, ELD notification,
fill_audio_info, and commit_audio functions from
amdgpu_dm.c into a dedicated amdgpu_dm_audio.c file
with its own header.

No functional change intended.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Hung 
Signed-off-by: Chenyu Chen 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Extract backlight code to amdgpu_dm_backlight

2026-06-17T20:14:47+00:00

Move backlight-related functions from amdgpu_dm.c into a new
amdgpu_dm_backlight.c file to improve code organization and
reduce the size of the monolithic amdgpu_dm.c.

No functional change intended.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Hung 
Signed-off-by: Chenyu Chen 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Enable gcov coverage for amdgpu_dm KUnit builds

2026-06-03T17:31:41+00:00

[Why & How]
Add GCOV_PROFILE := y to amdgpu_dm/Makefile under the
CONFIG_DRM_AMD_DC_KUNIT_TEST guard so coverage instrumentation
is only applied during KUnit builds, not all amdgpu_dm builds.

Add coverage config options (CONFIG_GCOV, CONFIG_DEBUG_INFO,
CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT, CONFIG_DEBUG_KERNEL)
to tests/.kunitconfig so the kunit.py runner enables the kernel
coverage configuration automatically.

Assisted-by: Copilot:Claude-Sonnet-4.6
Reviewed-by: Aurabindo Pillai 
Signed-off-by: Alex Hung 
Signed-off-by: Ray Wu 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Add KUnit test for CRC function

2026-05-19T15:54:36+00:00

DM CRC parsing functions are an easy candidate for exploring the use of
KUnit unit-testing frameworks. Add a few tests for the same.

The test file and .kunitconfig are placed under amdgpu_dm/tests/ to
follow the convention of keeping test code separate from production
sources.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Harry Wentland 
Signed-off-by: Aurabindo Pillai 
Signed-off-by: Alex Hung 
Signed-off-by: Ivan Lipski 
Tested-by: Dan Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Add Idle state manager(ISM)

2026-03-30T19:14:05+00:00

[Why]

Rapid allow/disallow of idle optimization calls, whether it be IPS or
self-refresh features, can end up using more power if actual
time-in-idle is low. It can also spam DMUB command submission in a way
that prevents it from servicing other requestors.

[How]

Introduce the Idle State Manager (ISM) to amdgpu. It maintains a finite
state machine that uses a hysteresis to determine if a delay should be
inserted between a caller allowing idle, and when the actual idle
optimizations are programmed.

A second timer is also introduced to enable static screen optimizations
(SSO) such as PSR1 and Replay low HZ idle mode. Rapid SSO enable/disable
can have a negative power impact on some low hz video playback, and can
introduce user lag for PSR1 (due to up to 3 frames of sync latency).

This effectively rate-limits idle optimizations, based on hysteresis.

This also replaces the existing delay logic used for PSR1, allowing
drm_vblank_crtc_config.disable_immediate = true, and thus allowing
drm_crtc_vblank_restore().

v2:
* Loosen criteria for ISM to exit idle optimizations; it failed to exit
  idle correctly on cursor updates when there are no drm_vblank
  requestors,
* Document default_ism_config
* Convert pr_debug to trace events to reduce overhead on frequent
  codepaths
* checkpatch.pl fixes

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/4527
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3709
Fixes: 58a261bfc967 ("drm/amd/display: use a more lax vblank enable policy for older ASICs")
Signed-off-by: Ray Wu 
Signed-off-by: Leo Li 
Reviewed-by: Mario Limonciello (AMD) 
Signed-off-by: Alex Deucher

drm/amd/display: Add support for sRGB EOTF in DEGAM block

2025-11-26T22:03:34+00:00

Expose one 1D curve colorop with support for
DRM_COLOROP_1D_CURVE_SRGB_EOTF and program HW to perform
the sRGB transform when the colorop is not in bypass.

With this change the following IGT test passes:
kms_colorop --run plane-XR30-XR30-srgb_eotf

The color pipeline now consists of a single colorop:
1. 1D curve colorop w/ sRGB EOTF

Signed-off-by: Alex Hung 
Co-developed-by: Harry Wentland 
Signed-off-by: Harry Wentland 
Reviewed-by: Daniel Stone 
Signed-off-by: Simon Ser 
Link: https://patch.msgid.link/20251115000237.3561250-29-alex.hung@amd.com