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

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

2026-03-30T19:14:05Z

[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

2025-11-26T22:03:34Z

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

drm/amd/display: Restructure DMI quirks

2025-05-13T13:30:52Z

[Why] DMI quirks are relatively big code that makes amdgpu_dm 200 lines larger. [How] Move DMI quirks into a dedicated source file and make all quirks variables for `struct amdgpu_display_manager`. Reviewed-by: Alex Hung Signed-off-by: Mario Limonciello Signed-off-by: Ray Wu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Initialize writeback connector

2023-12-06T20:22:34Z

[WHAT] Create a drm_writeback_connector when connector signal equals SIGNAL_TYPE_VIRTUAL. Tested-by: Daniel Wheeler Reviewed-by: Harry Wentland Signed-off-by: Alex Hung Signed-off-by: Alex Deucher

drm/amd/display: Skip entire amdgpu_dm build if !CONFIG_DRM_AMD_DC

2023-12-06T20:22:34Z

[WHY] Previously this only excluded build for a few amdgpu_dm binaries which makes no sense. [HOW] Wrap the entire Makefile in "ifneq ($(CONFIG_DRM_AMD_DC),)" Tested-by: Daniel Wheeler Reviewed-by: Alex Hung Signed-off-by: Harry Wentland Signed-off-by: Alex Hung Signed-off-by: Alex Deucher

drm/amd/display: Add Freesync Panel DM code

2023-08-07T21:14:07Z

We need certain conditions for replay to be enabled, so create an interface in DM to enable/disable replay. Signed-off-by: Bhawanpreet Lakha Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher

drm/amd/display: Rename DCN config to FP

2023-03-07T19:22:40Z

[Why & How] The only reason we have the DCN config is for floating point support. Rename it to make that clear and (hopefully) avoid misuse of the config in the future. Reviewed-by: Rodrigo Siqueira Acked-by: Qingqing Zhuo Signed-off-by: Harry Wentland Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Drop CONFIG_DRM_AMD_DC_HDCP

2023-03-07T19:22:39Z

[Why & How] There is no reason we still need a config option for this. Reviewed-by: Wenjing Liu Acked-by: Qingqing Zhuo Signed-off-by: Harry Wentland Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Create a file dedicated for CRTC

2022-07-25T13:31:01Z

[Why] The amdgpu_dm file contains most of the code that works as an interface between DRM API and DC. As a result, this file becomes very large since it comprises multiple abstractions such as CRTC manipulation. [How] This commit extracts the CRTC code to its specific file named amdgpu_dm_crtc. This change does not change anything inside the functions; the only exception is converting some static functions to a global function. v2: fix ifdef merge mix up (Alex) Tested-by: Daniel Wheeler Reviewed-by: Harry Wentland Acked-by: Alan Liu Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Create a file dedicated to planes

2022-07-20T20:10:38Z

[Why] The amdgpu_dm file contains most of the code that works as an interface between DRM API and DC. As a result, this file becomes very large since it comprises multiple abstractions such as plane manipulation. [How] This commit extracts the plane code to its specific file named amdgpu_dm_plane. This change does not change anything inside the functions; the only exception is converting some static functions to a global function. Tested-by: Daniel Wheeler Reviewed-by: Harry Wentland Acked-by: Alan Liu Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher