Commit Graph

1197 Commits

Author SHA1 Message Date
Timur Kristóf
4bd8b5f8bc drm/amd/display: Enable DAC in DCE link encoder
Ensure that the DAC output is enabled at the correct time by
moving it to the DCE link encoder similarly to how digital
outputs are enabled.

This also removes the call to DAC1EncoderControl from the DCE
HWSS, which always felt like it was a hacky solution.

Fixes: 0fbe321a93 ("drm/amd/display: Implement DCE analog link encoders (v2)")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Tested-by: Mauro Rossi <issor.oruam@gmail.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-19 12:16:12 -05:00
Bhuvanachandra Pinninti
4c595e7511 drm/amd/display: Migrate DCCG registers access from hwseq to dccg component.
[Why]
Direct DCCG register access in hwseq layer was creating register conflicts.

[How]
Migrated DCCG registers from hwseq-dccg component.

Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Signed-off-by: Bhuvanachandra Pinninti <BhuvanaChandra.Pinninti@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-19 12:16:10 -05:00
Nicholas Carbones
6246c12f52 drm/amd/display: Revert "Migrate DCCG register access from hwseq to dccg component."
[Why & How]
This reverts commit 949adb4789, which
causes regressions related to HDCP when resuming from S3.

Reviewed-by: Joshua Aberback <joshua.aberback@amd.com>
Signed-off-by: Nicholas Carbones <ncarbone@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-12 15:14:45 -05:00
Chenyu Chen
1a77ecec8b drm/amd/display: Add CRC 32-bit mode support for DCN3.6+
[Why]
DCN 3.6+ hardware supports CRC-32 polynomial in addition to the
legacy CRC-16. Enable 32-bit CRC values per color component for
improvement of precision in display validation.

[How]
When userspace sets crc_poly_mode (0=CRC-16, 1=CRC-32) via the debugfs
interface, the value is stored in dm_irq_params.crc_poly_mode. When CRC
source configuration triggers amdgpu_dm_crtc_configure_crc_source(),
crc_poly_mode is retrieved from dm_irq_params and passed to
dc_stream_configure_crc().

In the DC layer, dc_stream_configure_crc() sets crc_poly_mode into the
crc_params structure and passes it to optc35_configure_crc(). If the
hardware supports the OTG_CRC_POLY_SEL register, the register is
programmed to select CRC-16 or CRC-32 polynomial.

When reading CRC values, optc35_get_crc() checks whether CRC32 register
masks are available. If present, it reads 32-bit CRC values from
OTG_CRC0/1_DATA_R32/G32/B32 registers; otherwise, it falls back
to reading 16-bit CRC values from legacy OTG_CRC0/1_DATA_RG/B
registers.

Reviewed-by: ChiaHsuan Chung <chiahsuan.chung@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-03 16:43:12 -05:00
Bhuvanachandra Pinninti
b82f075934 drm/amd/display: Migrate DIO registers access from hwseq to dio component.
[why]
Direct DIO registers access in hwseq layer was creating register conflicts.

[how]
Migrated DIO registers from hwseq to dio component.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Signed-off-by: Bhuvanachandra Pinninti <bpinnint@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-03 16:43:03 -05:00
Bhuvanachandra Pinninti
949adb4789 drm/amd/display: Migrate DCCG register access from hwseq to dccg component.
[why]
Direct DCCG register access in hwseq layer was creating register conflicts.

[how]
Migrated DCCG registers from hwseq to dccg component.

Reviewed-by: Martin Leung <martin.leung@amd.com>
Signed-off-by: Bhuvanachandra Pinninti <bpinnint@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-03 16:39:09 -05:00
Wenjing Liu
1417281ca8 drm/amd/display: update memory QoS measurement interface
[how]
- Consolidate memory QoS measurement functions into a single interface for
  better maintainability and usability.
- Update function naming for improved clarity.
- Unify latency measurements into a single function call with update
  programming sequence.
- Add `start_measuring_urgent_assertion_count` and
  `get_urgent_assertion_count` interfaces.
- Add `start_measuring_prefetch_data_size` and `get_prefetch_data_size`
  interfaces.
- Update start_measuring_unbounded_bandwidth implementation to measure 200
  data returns in the middle of prefetch window.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-01-20 17:19:10 -05:00
Peichen Huang
5a113e15d1 drm/amd/display: init code for external panel replay
Prepare for supporting panel replay on external monitors.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Peichen Huang <PeiChen.Huang@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-01-10 14:21:53 -05:00
Leo Chen
1883b2578d drm/amd/display: Add global fgcg function prototype to DCCG
[Why & How]
Add the ability to enable/disable global fine grain clock gating within DCCG.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-01-10 14:21:53 -05:00
Peichen Huang
1e5cd4adfc drm/amd/display: move panel replay out from edp
[WHY]
Panel Replay is not an eDP-specific function.

[HOW]
Create new Panel Replay source files and move the Panel Replay
functions from the eDP files to the new files. Additionally, create
a new link_service construct function to assign the related
function pointers.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Signed-off-by: Peichen Huang <PeiChen.Huang@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-01-10 14:21:52 -05:00
Timur Kristóf
436d0d22aa drm/amd/display: Pass proper DAC encoder ID to VBIOS
Similarly to the analog_engine field, add a new	analog_id field
which contains the encoder ID of the analog encoder that
corresponds to the link encoder.

Previously, the default encoder ID of the link encoder was used,
which meant that we passed the wrong ID in case of DVI-I.

Fixes: 5834c33fd3 ("drm/amd/display: Add concept of analog encoders (v2)")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-01-05 17:00:00 -05:00
Dmytro Laktyushkin
def3488eb0 drm/amd/display: refactor HPD to increase flexibility
Currently all dcn revisions have to follow the same codepath for
hotplug detection. This change allows per dcn hpd handling consolidating
hpd code in link_encoder.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08 13:56:40 -05:00
Jack Chang
74ce00932e drm/amd/display: Refactor panel replay set dmub cmd flow
[WHY]
Add link service interface for setting PR dmub command

Reviewed-by: Robin Chen <robin.chen@amd.com>
Signed-off-by: Jack Chang <jack.chang@amd.com>
Signed-off-by: Leon Huang <Leon.Huang1@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-12-08 13:56:36 -05:00
Dave Airlie
0692602def Merge tag 'amd-drm-next-6.19-2025-12-02' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-6.19-2025-12-02:

amdgpu:
- Unified MES fix
- SMU 11 unbalanced irq fix
- Fix for driver reloading on APUs
- pp_table sysfs fix
- Fix memory leak in fence handling
- HDMI fix
- DC cursor fixes
- eDP panel parsing fix
- Brightness fix
- DC analog fixes
- EDID retry fixes
- UserQ fixes
- RAS fixes
- IP discovery fix
- Add missing locking in amdgpu_ttm_access_memory_sdma()
- Smart Power OLED fix
- PRT and page fault fixes for GC 6-8
- VMID reservation fix
- ACP platform device fix
- Add missing vm fault handling for GC 11-12
- VPE fix

amdkfd:
- Partitioning fix

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20251202220101.2039347-1-alexander.deucher@amd.com
2025-12-03 09:43:49 +10:00
Dave Airlie
ce0478b02e Merge tag 'v6.18-rc6' into drm-next
Linux 6.18-rc6

Backmerge in order to merge msm next

Signed-off-by: Dave Airlie <airlied@redhat.com>
2025-11-21 08:55:08 +10:00
Nicholas Carbones
1a7322e985 drm/amd/display: Add pipe topology history to dc
[Why]
There is no way to check pipe topology update history through a
dump.

[How]
Add a topology history structure to dc with snapshots of the most recent
pipe topology updates.

Reviewed-by: George Shen <george.shen@amd.com>
Signed-off-by: Nicholas Carbones <ncarbone@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-11-18 10:51:24 -05:00
Leo Chen
401f8f33ad drm/amd/display: dynamically clock gate before and after prefetch
[Why]
An invalidation request arriving during prefetch can potentially hang
the system if dynamic clock gating is enabled and memory power requests
are disabled.

[How]
• Disable clock gating and enable memory power requests for the duration
of the prefetch.
• Turn on clock gating and disable memory power requests again after
prefetch is complete.

Limit the scope for DCN35 and DCN42 only.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-11-11 21:54:16 -05:00
Chuntao Tso
f3f48d6ce5 drm/amd/display: To support Replay frame skip mode
[Why & How]
The change is to optimize the Replay power saving by
reducing the refresh rate with frame skipping mode

Reviewed-by: Robin Chen <robin.chen@amd.com>
Signed-off-by: Chuntao Tso <chunttso@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-11-11 21:54:15 -05:00
Timur Kristóf
5834c33fd3 drm/amd/display: Add concept of analog encoders (v2)
Add a num_analog_stream_encoders field to indicate how many
analog stream encoders are present. When analog stream encoders
are present, create them.

Additionally, add an analog_engine field to link encoders and
search for supported analog encoders in the BIOS for each link.
When connecting an RGB signal, search for analog stream encoders.

The actual DCE analog link and stream encoder is going to be
added in a subsequent commit.

v2:
Add check to see if an analog engine is really supported.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-28 10:09:03 -04:00
Timur Kristóf
2394736e70 drm/amd/display: Introduce MAX_LINK_ENCODERS (v2)
We are going to support analog encoders as well, not just digital,
so we need to make space for them in various arrays.

v2: Fix typo.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-28 10:07:52 -04:00
Karen Chen
dbf58a9dad drm/amd/display: Add more DC HW state info to underflow logging
[Why]
Debugging underflow issues frequently requires knowing the
HW state at the time of underflow. To enable capturing this
HW state information, interface functions are needed for the
various DC HW blocks.

[How]
This change adds the interface functions to read HW state for
the following DC HW blocks:
- HUBBUB
- HUBP
- DPP
- MPC
- OPP
- DSC
- OPTC
- DCCG

Reviewed-by: George Shen <george.shen@amd.com>
Signed-off-by: Karen Chen <Karen.Chen@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-28 09:57:44 -04:00
Austin Zheng
e6a8a000cf drm/amd/display: Rename dml2 to dml2_0 folder
[Why]
dml2 folder contains all logic for all versions of DML2
This is currently DML2.0 and DML2.1.
Rename dml2 to dml2_0 folder to reflect this better (dml2_0
for DML2.0).

[How]
Rename dml2 to dml2_0 folder and update dml2 references to
use dml2_0 folder.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Austin Zheng <Austin.Zheng@amd.com>
Signed-off-by: waynelin <Wayne.Lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-28 09:57:39 -04:00
Charlene Liu
bec947cbe9 drm/amd/display: increase max link count and fix link->enc NULL pointer access
[why]
1.) dc->links[MAX_LINKS] array size smaller than actual requested.
max_connector + max_dpia + 4 virtual = 14.
increase from 12 to 14.

2.) hw_init() access null LINK_ENC for dpia non display_endpoint.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: Chris Park <chris.park@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d7f5a61e1b)
Cc: stable@vger.kernel.org
2025-10-21 09:50:27 -04:00
Wenjing Liu
d745900b40 drm/amd/display: update perfmon measurement interfaces
[how]
The commit update interfaces for dchubbub perfmon meansurement to better
reflect our requirements.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-20 18:21:56 -04:00
Alvin Lee
b9a21a379a drm/amd/display: Update spacing in struct
Update spacing so that fields with longer name will
still be aligned correctly (new fields to be added).

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-20 18:21:39 -04:00
Alvin Lee
11d672db1b drm/amd/display: Update DCN401 path for cursor offload
[Description]
The DCN401 cursor offload path needs to take into account
use_mall_for_cursor, and also need to ensure the dcn32
function assigns the cursor cache fields (DCN401 uses the
dcn32 implementation).

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-20 18:21:30 -04:00
Charlene Liu
d7f5a61e1b drm/amd/display: increase max link count and fix link->enc NULL pointer access
[why]
1.) dc->links[MAX_LINKS] array size smaller than actual requested.
max_connector + max_dpia + 4 virtual = 14.
increase from 12 to 14.

2.) hw_init() access null LINK_ENC for dpia non display_endpoint.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: Chris Park <chris.park@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-20 18:20:56 -04:00
Nicholas Kazlauskas
8e8691ecee drm/amd/display: Driver implementation for cursor offloading to DMU
[Why]
We require an interlock between driver and firmware for upcoming
features and given that this could possibly happen on any single
cursor programming call (and that we can't asynchronously wait for
firmware to respond because of it) we'd be regressing cursor performance
by at least an extra 40us per call.

When we could possibly have cursor update every 20us - 100s from high
frequency gaming mice this means that we'd be stuttering or dropping
updates and impacting overall cursor performance.

We want a solution that can:

1. Interlock between other firmware features
2. Not stall out or require the DMCUB lock for every single update

[How]
When cursor offloading is enabled and supported by an ASIC driver will
route the cursor programming through to DMU as part of the regular
DC stream cursor programming interfaces for attributes and position.

The atomic pipe programming version will not be updated: this will still
follow the existing programming path by keeping track of a field that
specifies when the register writes should be deferred to DMU.

Cursor locking is not required when cursor offload is in progress since
the updates are consolidated and processed by DMU once at the end
of the frame in a periodic manner.

The shared buffer the firmware queries from is allocated along with the
rest of the scratch state region in an area that's accessible by
both firmware and driver.

The size of the cursor offload (v1) state will not change, but it does
have a unique union per ASIC version with room for expansion if needed.

When firmware features notifying DMU of DRR updates are not enabled we
now send an explicit vtotal min/max update via driver to DMU firmware
whenever the vtotal max changes. This is to allow the cursor programming
to determine the appropriate latch update point offset from vupdate.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-13 14:14:32 -04:00
Martin Leung
c062decc5e Revert "drm/amd/display: Reduce Stack Usage by moving 'audio_output' into 'stream_res' v4"
This reverts commit 1cf1205ef2 ("drm/amd/display: Reduce Stack Usage by moving 'audio_output' into 'stream_res' v4")

Reason for revert: Causes DP compliance errors

Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Signed-off-by: Martin Leung <Martin.Leung@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-09-15 17:01:17 -04:00
Relja Vojvodic
edae98a2bd drm/amd/display: Add DSC padding for OVT Support
[Why]
-Certain OVT timings require DSC configurations which divide the
horizontal active unevenly across DSC slices
-DSC slices must be even, so padding needs to be added to the active
to make this possible
-The pixel clock of the HW now needs to be increased to accommodate
the extra padded pixels
-To keep the line time the same, the blank of the HW timing needs to
be increased as well

[How]
-Calculate h_active padding, h_total padding, and pixel clock based
off of the original OVT timing and DSC calculations
-Store these values in the pipe and program HW with these modifications
-Added general support for cases where DSC slice config does not evenly
split the horizontal active by fixing some slice width calculations
-Updated PPS calculations for these cases

Reviewed-by: Chris Park <chris.park@amd.com>
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Relja Vojvodic <rvojvodi@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-09-15 17:01:11 -04:00
Wesley Chalmers
782f0bb5a1 drm/amd/display: Rename header file link.h to link_service.h
[WHY]
Header file name "link.h" collides with system header when dc is
compiled as a user-mode library

[WHAT]
Rename link.h to link_service.h to avoid name collision

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-09-15 16:57:29 -04:00
Dmytro Laktyushkin
44343e8b25 drm/amd/display: prepare dml 2.1 for new asic
[Why&How]
prepare dml 2.1 for new asic

Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-09-15 16:57:15 -04:00
Ovidiu Bunea
1bde5584e2 drm/amd/display: Correct sequences and delays for DCN35 PG & RCG
[why]
The current PG & RCG programming in driver has some gaps and incorrect
sequences.

[how]
Added delays after ungating clocks to allow ramp up, increased polling
to allow more time for power up, and removed the incorrect sequences.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Ovidiu Bunea <ovidiu.bunea@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-09-05 17:38:41 -04:00
Wenjing Liu
f74291c1de drm/amd/display: Update dchubbub.h for hubbub perfmon support
[why]
dchubbub supports performance monitoring for hubbub.
The interfaces define the performance monitoring events and their
attributes.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-09-05 17:38:41 -04:00
Ivan Lipski
645f74f1dc drm/amd/display: Clear the CUR_ENABLE register on DCN314 w/out DPP PG
[Why&How]
ON DCN314, clearing DPP SW structure without power gating it can cause a
double cursor in full screen with non-native scaling.

A W/A that clears CURSOR0_CONTROL cursor_enable flag if
dcn10_plane_atomic_power_down is called and DPP power gating is disabled.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4168
Reviewed-by: Sun peng (Leo) Li <sunpeng.li@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-29 10:22:52 -04:00
Austin Zheng
cf49a454e1 drm/amd/display: Add Component To Handle Bounding Box Values and IP Caps
[Why]
Bounding box values can be stored in multiple locations. (e.g. PMFW, VBIOS, DMUB).
The source and interpretation of these values can vary with DCN revision
so there should be a component that can gather these values and translate
them accordingly

[How]
Have component start with the statically defined values as a base.
Then update them as needed with DCN-specific logic
Guard this component with FPU flags since values need to be in float point.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Signed-off-by: Austin Zheng <Austin.Zheng@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-29 10:14:02 -04:00
Yihan Zhu
f382e2d0fa drm/amd/display: wait for otg update pending latch before clock optimization
[WHY & HOW]
OTG pending update unlatched will cause system fail, wait OTG fully disabled to
avoid this error.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Yihan Zhu <Yihan.Zhu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-27 13:57:50 -04:00
Karthi Kandasamy
88fdd89d1c drm/amd/display: Add control flags to force PSR / replay
To change PSR/Replay behavior based on OS preferences, add some
config options.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Karthi Kandasamy <karthi.kandasamy@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-27 13:57:49 -04:00
Clay King
de0f5be791 drm/amd/display: Delete unused functions
[WHAT]
Removing unused code

Reviewed-by: Joshua Aberback <joshua.aberback@amd.com>
Signed-off-by: Clay King <clayking@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-18 16:57:22 -04:00
Muhammad Ahmed
5dc0ec782e drm/amd/display: Adding interface to log hw state when underflow happens
[why]
Will help us better debug underflow issues.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Muhammad Ahmed <Muhammad.Ahmed@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-04 14:40:32 -04:00
Reza Amini
e63e9f8b3d drm/amd/display: Fixing hubp programming of 3dlut fast load
[why]
HUBP needs to know the size of the lut's destination in MPC.
This is currently defaulted to 17, and needs to be set for specific
lut size.

[how]
Define and apply the missing hubp field. Taking this opportunity
to consolidate the programming of 3dlut into a hubp and mpc function.

Reviewed-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Signed-off-by: Reza Amini <reza.amini@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-04 14:40:24 -04:00
Duncan Ma
fa7cad4901 drm/amd/display: Add eDP AUXless ALPM
[Why & How]
Add AUX-less ALPM capability check and initialization

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Duncan Ma <Duncan.Ma@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-28 16:40:31 -04:00
Alvin Lee
72b4aabdf1 drm/amd/display: Add comma to last entry of enum for consistency
[Why&How]
Add comma to last entry of enum for consistency.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-28 16:40:07 -04:00
Srinivasan Shanmugam
1cf1205ef2 drm/amd/display: Reduce Stack Usage by moving 'audio_output' into 'stream_res' v4
The function `dp_retrain_link_dp_test` currently allocates a large
audio_output array on the stack, causing the stack frame size to exceed
the compiler limit (1080 bytes > 1024 bytes).

This change prevents stack overflow issues:
amdgpu/../display/dc/link/accessories/link_dp_cts.c:65:13: warning: stack frame size (1080) exceeds limit (1024) in 'dp_retrain_link_dp_test' [-Wframe-larger-than]
static void dp_retrain_link_dp_test(struct dc_link *link,

v2: Move audio-related data like `audio_output` is kept "per pipe" to
    manage the audio for that specific display pipeline/display output path
    (stream). (Wenjing)

v3: Update in all the places where `build_audio_output` is currently
    called with a separate audio_output variable on the stack & wherever
    `audio_output` is passed to other functions
    `dce110_apply_single_controller_ctx_to_hw()` &
    `dce110_setup_audio_dto()` (like `az_configure`, `wall_dto_setup`)
    replace with usage of `pipe_ctx->stream_res.audio_output`
    to centralize audio data per pipe.

v4: Remove empty lines before `build_audio_output`. (Alex)

Fixes: 9c6669c2e2 ("drm/amd/display: Fix Link Override Sequencing When Switching Between DIO/HPO")
Cc: Wayne Lin <wayne.lin@amd.com>
Cc: George Shen <george.shen@amd.com>
Cc: Michael Strauss <michael.strauss@amd.com>
Cc: Alvin Lee <Alvin.Lee2@amd.com>
Cc: Ray Wu <ray.wu@amd.com>
Cc: Wenjing Liu <wenjing.liu@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-28 16:40:07 -04:00
Aurabindo Pillai
18f0817d2e drm/amd/display: Initial support for SmartMux
SmartMux is a mechanism to switch the GPU being used for scanout in a
hybrid configuration. This is used for devices with an eDP and two GPUs.
This is only valid when the system has a physical switch (Multiplexer)
in the board to switch between the two GPUs.

When a graphically intensive workload like a game is being run, the
system can be switch the active display to the dGPU, so that we can
avoid copying the buffer from dGPU to APU for scanout. This helps with
latency and FPS. When power consumption is preferred, the system can be
switched to the APU.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-15 14:07:53 -04:00
Leo Chen
c5c33903d7 drm/amd/display: Add static pg implementations for future use
[Why & How]
Add static pg implementations and debug flags for future use.

Reviewed-by: Duncan Ma <duncan.ma@amd.com>
Signed-off-by: Leo Chen <leo.chen@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-15 14:07:52 -04:00
Dillon Varone
d7b618bc41 drm/amd/display: Refactor DSC cap calculations
[WHY]
DSC block level should only be responsible for reporting single DSC
instance capabilities. Factoring in ODM combine requirements should be
handled in dc_dsc.c. Both components should acquire clocks from clk_mgr
to determine throughput capabilities instead of relying on hard coded
values as these can differ by SoC and SKU.

[HOW]
1) Add dsc_get_single_enc_caps to acquire single DSC instance
    capabilities (replacing dsc_get_enc_caps), factoring in DSCCLK
2) add build_dsc_enc_caps to combine single DSC instance capabilities
3) account for max pixel rate per pipe (DISPCLK) when calculating
    minimum slice count

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-15 14:07:51 -04:00
Yihan Zhu
26ad78fffc drm/amd/display: MPC basic allocation logic and TMZ
[WHY & HOW]
Adding basic logic to allocate unused RMCM block and TMZ support.

Reviewed-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Signed-off-by: Yihan Zhu <Yihan.Zhu@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-15 14:07:51 -04:00
Michael Strauss
9c6669c2e2 drm/amd/display: Fix Link Override Sequencing When Switching Between DIO/HPO
[WHY]
When performing certain link maintenance compliance tests or forcing link
settings, changing between 128b/132b and 8b/10b rates no longer works on
some ASICs. Some rate divider updates only occur when we set
timings or validate state, which is not performed currently when toggling
DPMS to change rates.

[HOW]
Re-calculate dividers and reprogram audio when switching between DIO
and HPO through DP compliance/escape code path.
Add OTG disable/re-enable so we don't touch the clock while OTG is active.
Acquire dcLock before forcing link settings to avoid thread synchronization
errors due to added programming in escape code path and potential HPD
interrupts.

Reviewed-by: George Shen <george.shen@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Mike Katsnelson <mike.katsnelson@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-06-30 11:59:22 -04:00
Cruise Hung
156374b2a6 drm/amd/display: Remove unused tunnel BW validation
[Why & How]
The tunnel BW validation code has changed to the new one.
Remove the unused code.
The DP tunneling overhead is not updated in SST.
Move updating DP tunneling overhead for both SST and MST.

Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Signed-off-by: Cruise Hung <Cruise.Hung@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-06-30 11:58:36 -04:00