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

drm/amdgpu: use TTM_NUM_MOVE_FENCES when reserving fences

2026-03-30T19:16:33Z

Use TTM_NUM_MOVE_FENCES as an upperbound of how many fences ttm might need to deal with moves/evictions. Signed-off-by: Pierre-Eric Pelloux-Prayer Acked-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Alex Deucher

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: Move FPU Guards From DML To DC - Part 1

2026-03-30T19:06:10Z

[Why] FPU guards (DC_FP_START/DC_FP_END) are required to wrap around code that can manipulates floats. To do this properly, the FPU guards must be used in a file that is not compiled as a FPU unit. If the guards are used in a file that is a FPU unit, other sections in the file that aren't guarded may be end up being compiled to use FPU operations. [How] Added DC_FP_START and DC_FP_END to DC functions that call DML functions using FPU. Reviewed-by: Dillon Varone Signed-off-by: Rafal Ostrowski Signed-off-by: Alex Hung Signed-off-by: Alex Deucher

Revert "drm/amd/display: Refactor DC update checks"

2026-03-30T19:01:06Z

Revert commit c24bb00cc6cf ("drm/amd/display: Refactor DC update checks") [WHY] Causing issues with PSR/Replay, reverting until those can be fixed. Reviewed-by: Martin Leung Signed-off-by: Dillon Varone Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher

drm/amd/display: Enable Replay support for dcn42

2026-03-30T18:39:31Z

Add DCN4.2 to the list that supports Panel Replay feature. Reviewed-by: Alex Hung Signed-off-by: Roman Li Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher

Merge tag 'drm-misc-next-2026-03-26' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2026-03-27T02:45:54Z

drm-misc-next for v7.1: UAPI Changes: amdxdna: - support per-BO memory-usage queries docs: - Improve UAPI documentation panthor: - extend timestamp query with flags Core Changes: edid: - provide enum drm_output_color_format; mass-convert drivers gem-dma: - use drm_dev_dma_dev() for DMA mappings - set VM_DONTDUMP on mmap mipi-dbi: - drop simple-display; mass-convert drivers prime: - use drm_dev_dma_dev() for DMA mappings ttm: - improve handling of gfp_retry_mayfail Driver Changes: amdgpu: - use atomic_create_state for private_obj amdxdna: - refactor GEM implementation - fixes bridge: - provide clear-and-put helper for reliable cleanup - analogix_dp: Use DP helpers for link training - lontium-lt8713sx: Fix 64-bit division and Kconfig - samsung-dsim: Use clear-and-put imagination: - improve power-off sequence - support context-reset notification from firmware komeda: - support Arm China Linlon D6 plus DT bindings mediatek: - use drm_dev_dma_dev() for DMA mappings panel: - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings panthor: - support various sources for timestamp queries - fixes omapdrm: - use atomic_create_state for private_obj rcar-du: - fix suspend/resume wrt VSP interface - fix leak of device_link - clean up sun4i: - use drm_dev_dma_dev() for DMA mappings tegra: - use atomic_create_state for private_obj xe: - send 'none' recovery method for XE_WEDGED_MODE_UPON_ANY_HANG_NO_RESET Signed-off-by: Dave Airlie From: Thomas Zimmermann Link: https://patch.msgid.link/20260326151812.GA76082@linux.fritz.box

drm/amd/display: update outdated comments for renamed vblank_control_worker()

2026-03-24T17:33:15Z

The function vblank_control_worker() was renamed to amdgpu_dm_crtc_vblank_control_worker() by commit 6ce4f9ee25ff ("drm/amd/display: Add prefix to amdgpu crtc functions"). Update the two stale references in amdgpu_dm.c. Assisted-by: unnamed:deepseek-v3.2 coccinelle Signed-off-by: Kexin Sun Signed-off-by: Alex Deucher

drm/amd/display: check if ext_caps is valid in BL setup

2026-03-24T17:28:40Z

LVDS connectors don't have extended backlight caps so check if the pointer is valid before accessing it. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/5012 Fixes: 1454642960b0 ("drm/amd: Re-introduce property to control adaptive backlight modulation") Cc: Mario Limonciello Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Alex Deucher

drm/amdgpu: display: Convert to drm_output_color_format

2026-03-24T12:54:30Z

Now that we introduced a new drm_output_color_format enum to represent what DRM_COLOR_FORMAT_* bits were representing, we can switch to the new enum. The main difference is that while DRM_COLOR_FORMAT_ was a bitmask, drm_output_color_format is a proper enum. However, the enum was done is such a way than DRM_COLOR_FORMAT_X = BIT(DRM_OUTPUT_COLOR_FORMAT_X) so the transitition is easier. The only thing we need to consider is if the original code meant to use that value as a bitmask, in which case we do need to keep the bit shift, or as a discriminant in which case we don't. Acked-by: Jani Nikula Tested-by: Nicolas Frattaroli Link: https://lore.kernel.org/r/20260305-drm-rework-color-formats-v3-4-f3935f6db579@kernel.org Signed-off-by: Maxime Ripard

drm/amd/display: Remove unnecessary completion flag for secure display

2026-03-23T18:16:06Z

The completion flag is not used in secure display today. Remove unnecessary code. Reviewed-by: Tom Chung Signed-off-by: Wayne Lin Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher