| Age | Commit message (Collapse) | Author |
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[Why]
On DCN, vblank events were delivered from VSTARTUP/VUPDATE
(dm_crtc_high_irq/dm_vupdate_high_irq) and pageflip completion from
GRPH_PFLIP (dm_pflip_high_irq). These signals can be masked by hardware
by a few things:
* DPG - DCN can Dynamically Power Gate parts of the display pipe when a
self-refresh capable eDP is connected. DPG is engaged when there's
enough static frames (detected through drm_vblank_off). Once gated,
even though the OTG (output timing generator) is still enabled,
VSTARTUP and GRPH_FLIP are masked.
* GSL - Driver can use the Global Sync Lock to block HW from latching
onto double-buffered registers during programming, to prevent HW from
latching onto a partially programmed state. This will mask VSTARTUP,
GRPH_FLIP, and VUPDATE. See dcn20_pipe_control_lock().
* MALL - A DCN accessible cache introduced in DCN32+ DGPUs that can
store fb data to allow for longer DRAM sleep. When scanning out from
MALL, VSTARTUP is masked.
When masked, events are never delivered, which can show up as flip_done
timeouts in the wild.
However, there is an interrupt source on DCN that is never masked:
VUPDATE_NO_LOCK. It's simply an unmasked variant of VUPDATE, which fires
while the OTG is active, at the exact point hardware latches
double-buffered registers. It is therefore the natural single signal for
delivering both vblank and flip-completion events on DCN, and the
correct point to timestamp both VRR and non-VRR vblanks.
DCE's interrupt sources are different, it does not have an unmaskable
VUPDATE_NO_LOCK. The only unmaskable DCE interrupt is VLINE0, but it can
only be programmed as a vline offset from vsync_start, making it
unsuitable for VRR. Thus, we keep DCE untouched and use the existing mix
of interrupt sources.
[How]
For DCN1 and newer only:
* Factor the body of dm_crtc_high_irq() into dm_crtc_high_irq_handler()
and drive it from dm_vupdate_high_irq() (VUPDATE_NO_LOCK). DCE keeps
using dm_crtc_high_irq() (VSTARTUP) and dm_pflip_high_irq()
(GRPH_PFLIP) unchanged.
* Stop registering VSTARTUP (crtc_irq) and GRPH_PFLIP (pageflip_irq) on
DCN, and stop enabling them in amdgpu_dm_crtc_set_vblank() /
manage_dm_interrupts(). Enable VUPDATE whenever vblank is enabled on
DCN (previously only in VRR mode). The secure-display vline0 interrupt
is left untouched.
* VUPDATE_NO_LOCK does not early-fire on an immediate (tearing / async)
flip, since HW latches the new address right away. Deliver the flip
completion event immediately after programming such flips in
amdgpu_dm_commit_planes(), and clear pflip_status so the next vupdate
handler does not double-send.
v2: Do not gate VUPDATE_NO_LOCK on DCN in dm_handle_vrr_transition()
Also toggle VUPDATE_NO_LOCK on DCN in dm_gpureset_toggle_interrupts()
Re-cook vblank event count and timestamp for immediate flips
Fixes: 9b47278cec98 ("drm/amd/display: temp w/a for dGPU to enter idle optimizations")
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/3787
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/4141
Assisted-by: Copilot:claude-opus-4.8
Co-developed-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Tested-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Those helpers allocates/frees slots from bitmaps for
process_context_array_index processed by MES firmware.
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Michael Chen <michael.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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amdgpu_acpi_vfct_bios() fetches the VFCT table with acpi_get_table()
but never releases it. acpi_get_table() takes a reference on the
table (incrementing its validation_count and mapping it on the 0->1
transition); without a paired acpi_put_table() the mapping is leaked
on every call, whether or not a matching VBIOS image is found.
Route all exit paths after the table is acquired through a common
acpi_put_table(). The VBIOS image is copied out with kmemdup() before
the table is released, so it remains valid for the caller.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260708193518.702584-3-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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On systems where PCI bus renumbering occurs (e.g. pci=realloc,
resource conflicts), the runtime bus number may differ from the
BIOS POST bus number recorded in the VFCT table. This causes
amdgpu_acpi_vfct_bios() to fail finding the VBIOS even though
the correct device entry exists.
Introduce amdgpu_acpi_vfct_match() which treats the bus number
as a soft filter: vendor/device/function identity is the hard
requirement, while exact bus match is the preferred path. When
bus numbers disagree but device identity matches, accept the
VFCT entry and log a dev_notice for diagnostics.
Reported-by: Oz Tiram <oz@shift-computing.de>
Closes: https://lore.kernel.org/amd-gfx/20260621173211.28443-1-oz@shift-computing.de/
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260708193518.702584-2-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Allocating the MES context bitmap to track the process/gang index usage.
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Michael Chen <michael.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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amdgpu_bo_create_reserved() only allocates a new BO when
*bo_ptr (struct amdgpu_bo **bo_ptr as input parameter) is
NULL, it simply skips creation when *bo_ptr is non-NULL.
But it unconditionally reserves, pins, gart allocates
and maps the BO afterwards.
When the same non-NULL BO pointer is passed in again,
for example firmware buffers that live in adev and are
re-loaded on every resume / cp_resume / start
under AMDGPU_FW_LOAD_DIRECT, amdgpu_bo_pin() just increases
pin_count unconditionally, however the matching teardown only unpins
once, so pin_count never drops to zero, so TTM is not able
to move, swap or evict a BO, causing BO leaks.
This commit fixes this issue by only pinning the bo
once at creation, and repeated calls no longer
take additional pin references.
Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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DM currently queues some deferred display work on system workqueues.
Low-context IRQ handlers are queued on system_highpri_wq, while deferred
vmin/vmax updates are queued on system_percpu_wq.
Both paths can execute long-running display work. HPD and HPD RX handling
may involve link detection, AUX transactions, connector state updates, and
hotplug notification. The vmin/vmax update path calls into DC under
dc_lock to adjust stream timing. These paths can therefore trigger the
workqueue CPU hog detector when run from per-CPU workers:
workqueue: dm_irq_work_func [amdgpu] hogged CPU for >10000us
workqueue: dm_handle_vmin_vmax_update [amdgpu] hogged CPU for >10000us
Move the deferred low-context IRQ work to a dedicated high-priority
unbound workqueue, preserving the priority of the previous
system_highpri_wq usage while avoiding long-running work on per-CPU
workers.
Move deferred vmin/vmax updates to a separate normal-priority unbound
workqueue.
High-context IRQ handlers remain unchanged and continue to run directly
from the IRQ path.
Signed-off-by: Geoffrey McRae <geoffrey.mcrae@amd.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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pre_reset only force-completes fences of MAPPED queues. A queue in any
other state (e.g. mid-eviction) keeps its last_fence pending; after a
GPU reset that fence never signals, so the eviction/suspend worker and
process teardown (amdgpu_evf_mgr_flush_suspend) wait on it forever and
wedge the machine:
INFO: task kworker/6:28 blocked for more than 120 seconds.
Workqueue: events amdgpu_eviction_fence_suspend_worker [amdgpu]
Call Trace:
dma_fence_wait_timeout+0x7e/0x130
amdgpu_userq_evict+0x67/0x140 [amdgpu]
amdgpu_eviction_fence_suspend_worker+0xd8/0x160 [amdgpu]
process_scheduled_works+0xa6/0x420
Force-complete every queue's fence regardless of state. The unmap and
mark-hung step stays gated on MAPPED, since unmapping a queue that is
not mapped is invalid.
Fixes: 290f46cf5726 ("drm/amdgpu: Implement user queue reset functionality")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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DM IRQ teardown can race with interrupt handling and low-context work.
The IRQ handler can still walk the DM IRQ handler tables while the
teardown path removes and frees entries. Low-context work can also
remain queued after its handler has been removed, leading to a possible
use-after-free when the work item later runs.
Rework amdgpu_dm_irq_fini() to detach all low and high context handlers
from the IRQ tables under the table lock, then cancel pending
low-context work outside the lock before freeing the handlers. Also
cancel low-context work in remove_irq_handler() before freeing an
individual handler.
Fix the suspend path by disabling HPD and HPD RX hardware interrupts
under the IRQ table lock before flushing pending low-context work,
avoiding a TOCTOU window where new work could be queued after the list
check.
Finally, call amdgpu_dm_irq_fini() from amdgpu_dm_fini() before DC is
destroyed, so IRQ teardown happens while the display core state is still
valid.
Signed-off-by: Geoffrey McRae <geoffrey.mcrae@amd.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add amdgpu_mes_rs64mem_init() and amdgpu_mes_rs64mem_fini() to
manage the RS64 local memory context arrays used by the MES
scheduler.
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Michael Chen <michael.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Convert printk() args that log error numbers to log the names.
Acked-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This DC patchset brings improvements in multiple areas. In summary, we have:
* Fixes on EDID 8K parsing, cursor mode, backlight, OLED/VABC, and HDR to SDR
* Improvements on DCN42 clocking, det allocation, and power gating
* Greatly enhanced KUnit coverage across amdgpu_dm
* Code cleanup
Acked-by: George Zhang <george.zhang@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Taimur Hassan <Syed.Hassan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
The cursor-mode re-evaluation added to dm_crtc_get_cursor_mode() also
checks the cursor plane's own destination rectangle. The crtc_x/y/w/h
check lives in the per-plane loop, which only flags the cursor plane via
cursor_changed and does not skip it, so the check fires whenever the
cursor itself moves.
flip-vs-cursor-legacy (kms_cursor_legacy) issues a stream of legacy
cursor moves and requires each to land on the fast path within a single
vblank. With the position check, every cursor move now sets
consider_mode_change and defeats the early return, forcing the full
cursor-mode evaluation. A legacy cursor move is a cursor-only commit:
the underlying planes are not in the atomic state, so the coverage loop
(for_each_oldnew_plane_in_descending_zpos walks only planes in the
state) sees nothing covering the CRTC, evaluates entire_crtc_covered as
false, and misclassifies the cursor mode as OVERLAY on a fully-covered
screen.
That spurious NATIVE->OVERLAY transition makes should_reset_plane()
return true (lock_and_validation_needed), pulls all CRTC planes into the
commit, and - because amdgpu_dm_plane_atomic_async_check() rejects async
updates in overlay mode - permanently knocks later cursor updates off the
async fast path. Each cursor move becomes a full atomic commit with DC
global validation, serialized against the page flip, so cursor updates no
longer fit in one vblank and flip-vs-cursor-legacy fails / times out
[How]
The cursor mode is a function of the underlying planes' coverage and
properties, not of the cursor's position, so cursor movement can never
change the correct mode. Restrict the destination-rectangle check to
non-cursor planes. A move/resize of an underlying plane (the case the
original change targets, e.g. amd_cursor_overlay@non-full) still
re-evaluates the mode correctly, while pure cursor movement returns to
the fast path.
Reviewed-by: ChiaHsuan (Tom) Chung <chiahsuan.chung@amd.com>
Signed-off-by: James Lin <PingLei.Lin@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[why]
dchubp needs to program DST_Y_DELTA_DRQ_LIMIT based on dml2.x
Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[why]
DST_Y_DELTA_DRQ_LIMIT from dml2.1
Reviewed-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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set_pipe_unlock_order needs to be set to true for the pipes to be unlocked
in correct order to avoid det overallocation
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why & How]
The related corruption issue is now resolved, HUBP/DPP driver PG can be enabled for DCN42.
Reviewed-by: Ovidiu (Ovi) Bunea <ovidiu.bunea@amd.com>
Signed-off-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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set_pipe_unlock_order needs to be set to true for the pipes to be unlocked
in correct order to avoid det overallocation
Reviewed-by: Taimur Hassan <syed.hassan@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Why:
DMSS feature was not getting triggered during HDR to SDR transitions,
and no DPCD write was observed. Root cause analysis revealed that
incorrect panel capabilities were being reported for PSR SU panels.
Due to the wrong capabilities, the OS was not invoking the DMSS API,
resulting in no DPCD communication and also gate eDP teardown across
DMSS hold
How:
Fixed by setting the correct power panel capabilities for PSR SU panels.
This ensures the OS receives accurate panel capability information and
triggers the DMSS API as expected, restoring proper DPCD writes during
HDR to SDR transitions.
The DC commit sequence,was tearing the eDP down anyway -- backlight off, ABM disable,
DPMS off, PSR/Replay feature_enabled cleared, PHY TX off, OTG/OPTC off
all these actions are blocked now with the skip_implict_edp_power_control
Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Karthi Kandasamy <karthi.kandasamy@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add KUnit coverage for fill_stream_properties_from_drm_display_mode():
zeroed borders, RGB defaults, sync polarity handling, inheriting from
an old stream, timing from the crtc, requested bpc colour depth,
content type and aspect ratio.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add KUnit coverage for amdgpu_dm_update_cacp_caps(): eDP and LVDS
supported, old/3.1.6 IP versions unsupported, non-eDP/LVDS and LCD
panels unsupported.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add KUnit coverage for amdgpu_dm_find_first_crtc_matching_connector():
match, no match, empty state, skipping NULL connector slots, and
returning the first match when several target the same crtc.
Also add coverage for amdgpu_dm_set_panel_type(): VSDB OLED/miniLED,
DPCD OLED/miniLED, Samsung miniLED above and below threshold, and the
default LCD fallback.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add KUnit coverage for amdgpu_dm_detect_mst_link_for_all_connectors()
to the amdgpu_dm_connector tests:
- No connectors registered: iteration body never runs and the call
succeeds.
- Writeback connector: hit by the early continue
- Non-MST link
- MST branch without aux: NULL mst_mgr.aux
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
The hardware programming guide indicates that we must exit LS before
any coefficient writes.
This is true across all ASIC for this block.
[How]
Drop the ips_v2 checks and unconditionall perform the update.
It is not based on IPS V2 support, which is set for DCN42, but rather
the presence of the block itself.
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[why]
enable hdmistreamclk_rcg by default
Reviewed-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Cover the eDP success path of amdgpu_dm_setup_backlight_device() where the
ABM level property is attached to the connector. A DRM-managed connector
fixture (drmm_mode_config_init + drmm_connector_init) lets the test verify
that one property is added and that its value is ABM_SYSFS_CONTROL.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit coverage using a DRM-managed connector fixture.
Tests cover show() mapping immediate-disable to 0 and reporting an active
ABM level, and store() handling the disable mapping, the forbidden update,
invalid text, and out-of-range input. show() writes through a page-backed
buffer because sysfs_emit() requires one.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit test to amdgpu_dm_register_backlight_device() and
cover its bl_idx == -1 early return, which must leave the
backlight device slot untouched.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit coverage for the backlight level read path.
A faked link_service vtable returns canned PWM and AUX brightness values,
letting the tests verify both the successful readback and the
DC_ERROR/AUX-failure fallbacks to the cached brightness, plus the
get_brightness() device-index wrapper.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit coverage for the backlight level write path in
amdgpu_dm_backlight.c.
Tests cover stream lookup hit/miss, the connector-off and no-stream early
returns, and the AUX/PWM/idle-reallow programming branches. The DC
programming calls stay safe by injecting a NULL power module and keeping
idle optimizations a no-op via disable_idle_power_optimizations.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for uncovered MST paths:
- dm_mst_get_pbn_divider with non-null link
- retrieve_downstream_port_device AUX read failure
- dm_dp_aux_transfer non-ACK reply handling
- dm_handle_mst_sideband_msg_ready_event ESI read
failure and ready-bit without MST state
- dm_handle_mst_down_rep_msg_ready wrapper
- amdgpu_dm_initialize_dp_connector eDP early return
- amdgpu_dm_initialize_dp_connector non-eDP MST init
path (dc_link_dp_get_max_link_enc_cap,
drm_dp_mst_topology_mgr_init and subconnector
property attach)
The non-eDP MST test uses standard DRM KUnit helpers to
build a full fixture (drmm_mode_config_init plus
drm_connector_init), which the topology manager and
subconnector property require, and stubs the DC link
service get_max_link_enc_cap callback.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests to verify both functions return early when
job->fb is NULL without touching any buffer object.
Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
FWTS autobrightness fails on eDP panels because actual_brightness can
read higher than the advertised max_brightness (e.g. 63576 vs 62451).
The conversion helpers expose the firmware PWM range to userspace as
[0..max]. But max_brightness is advertised as (max - min), which is
smaller. So reading the level can return a value above max_brightness.
This regressed in commit 4b61b8a39051 ("drm/amd/display: Add debugging
message for brightness caps"), which changed max_brightness to
(max - min) and undid commit 8dbd72cb7900 ("drm/amd/display: Export full
brightness range to userspace").
[How]
Advertise max_brightness as max, and scale the initial AC/DC brightness
against max too. Update the KUnit expectations to match.
Fixes: 4b61b8a39051 ("drm/amd/display: Add debugging message for brightness caps")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[why]
Previous dcn315 BIOS has known dsc issue, not good for reuse their dsc settings.
this pre-OS dsc issue is fixed in dcn42 bios.
since there is no production bios update for older asic, limit our new code instead.
Reviewed-by: Mohit Bawa <mohit.bawa@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Transition state does not have a valid dm_stream_ctx that should skip
configuring HDCP routine. The routine is valid to go through only when
a valid stream is created.
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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These values should be unset for dcn42
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
On DCN32/321 sometimes DMCUB takes a long time to flush.
This adds a delay before the data is available on the driver side even
after driver receives notification from DMCUB via inbox
[How]
Allocating DMUB memory to GTT gives much better latency. Limit this to
DCN32/1 for now; it will be made general to all other dGPUs later.
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Sun peng (Leo) Li <sunpeng.li@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
TCONs supporting VESA AUX Backlight does not always
support VESA Smooth Brightness. Driver software
needs to implement smooth brightness by periodically
updating the brightness by small steps. Driver
implementation is completed and verified on LCD
panels but solution is missing for OLED panels.
[How]
Updated driver to include smooth brightness for
OLED panels using VESA Aux Backlight.
Revert original workaround for VABC on oled issue,
as it is no longer needed.
Add VABC backlight Initialization sequence from
driver side.
Add fix to remove conflict between FW and driver
backlight programming for future ASIC.
Enable VABC for all future asic revisions.
Reviewed-by: Anthony Koo <anthony.koo@amd.com>
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Iswara Nagulendran <Iswara.Nagulendran@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for amdgpu_dm_plane_atomic_async_check(),
amdgpu_dm_plane_atomic_check(), amdgpu_dm_plane_panic_flush() and the
DRM plane reset, duplicate-state and destroy-state hooks.
Add the dm_test_init_atomic_check_state() helper and plane reset vtable
used by the new tests.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for amdgpu_dm_plane_helper_check_state() covering the
small viewport width, small viewport height, bottom-edge clipping and
scaling-caps rejection paths.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for the capability-callback-failure and not-capable
paths of amdgpu_dm_plane_validate_dcc(), and for the bad-size path of
amdgpu_dm_plane_get_cursor_position().
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for
amdgpu_dm_plane_fill_gfx12_plane_attributes_from_modifiers() covering
the block0, unconstrained-block and validation-failure cases.
Add the dm_test_gfx12_attrs() helper used to build the GFX12 inputs.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for
amdgpu_dm_plane_fill_gfx9_plane_attributes_from_modifiers() covering
DCC enablement, validation failure, and the RB+ 64B/128B and GFX9
64B/unconstrained block modes.
Add the dm_test_gfx9_attrs(), dm_test_setup_gfx9_dcc_device() and
dm_test_gfx9_dcc_modifier() helpers used to build the GFX9 DCC inputs.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for the video and GFX12 paths of
amdgpu_dm_plane_fill_plane_buffer_attributes().
Introduce the dm_test_plane_attrs(), dm_test_video_attrs() and
dm_test_graphics_attrs() helpers that drive the buffer-attribute fill
with representative plane states.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests covering the NV12 DCN1.x and plane-caps paths of
amdgpu_dm_plane_fill_dc_scaling_info() and the FP16 path of
amdgpu_dm_plane_get_min_max_dc_plane_scaling().
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for amdgpu_dm_plane_get_plane_modifiers() on GFX11
(64K-first and 256K-first) and GFX12 devices.
Add a register-read mock (dm_test_gfx11_reg_ctx and friends) and
device-setup helpers so the GFX11 DCC modifier ordering can be checked
without real hardware.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit tests for amdgpu_dm_plane_get_plane_modifiers() on GFX9,
Raven, Raven constant-encode, GFX10.1 and GFX10.3 devices.
Introduce the dm_test_expect_mods_terminated(), dm_test_mods_contain()
and dm_test_get_primary_mods() helpers used to validate the generated
modifier lists.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHAT]
Add KUnit coverage for amdgpu_dm_plane_get_format_info(), the overlay
universal-plane path of get_plane_formats(), the D-swizzle rejection
path of format_mod_supported(), and the DCN4.2 variant of
fill_blending_from_plane_state().
These exercise format-query and blending code paths that the existing
suite did not cover.
Assisted-by: Copilot:Claude-Opus-4.8 GPT-5.5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add KUnit coverage for amdgpu_dm_fbc_init() on the
amdgpu_dm_connector tests:
- No FBC present
- Non-eDP link
- Buffer already allocated
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add KUnit coverage for update_subconnector_property() on the
amdgpu_dm_connector suite:
- DP connector with a sink: subconnector property is resolved from
the dongle type (VGA converter -> VGA).
- DP connector without a sink: dongle type is ignored and the
property stays Unknown.
- Non-DP connector: function early-returns and leaves a pre-seeded
property value untouched.
Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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