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path: root/drivers/gpu/drm/amd/display/dc/resource/dcn201
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2026-04-07Merge v7.0-rc7 into drm-nextSimona Vetter1-0/+41
Thomas Zimmermann needs 2f42c1a61616 ("drm/ast: dp501: Fix initialization of SCU2C") for drm-misc-next. Conflicts: - drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c Just between e927b36ae18b ("drm/amd/display: Fix NULL pointer dereference in dcn401_init_hw()") and it's cherry-pick that confused git. - drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c Deleted in 6b0a6116286e ("drm/amd/pm: Unify version check in SMUv11") but some cherry-picks confused git. Same for v12/v14. Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
2026-04-02drm/amd/display: Wire up dcn10_dio_construct() for all pre-DCN401 generationsIonut Nechita1-0/+41
Description: - Commit b82f0759346617b2 ("drm/amd/display: Migrate DIO registers access from hwseq to dio component") moved DIO_MEM_PWR_CTRL register access behind the new dio abstraction layer but only created the dio object for DCN 4.01. On all other generations (DCN 10/20/21/201/30/301/302/303/ 31/314/315/316/32/321/35/351/36), the dio pointer is NULL, causing the register write to be silently skipped. This results in AFMT HDMI memory not being powered on during init_hw, which can cause HDMI audio failures and display issues on affected hardware including Renoir/Cezanne (DCN 2.1) APUs that use dcn10_init_hw. Call dcn10_dio_construct() in each older DCN generation's resource.c to create the dio object, following the same pattern as DCN 4.01. This ensures the dio pointer is non-NULL and the mem_pwr_ctrl callback works through the dio abstraction for all DCN generations. Fixes: b82f07593466 ("drm/amd/display: Migrate DIO registers access from hwseq to dio component.") Reviewed-by: Ivan Lipski <ivan.lipski@amd.com> Signed-off-by: Ionut Nechita <ionut_n2001@yahoo.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-03-17drm/amd/display: Query DC for gfx handling when setting linear tilingNicholas Carbones1-1/+2
[Why] Post-driver cases always use linear tiling yet gfx handling for this case is improper, allowing for incorrect gfx structs to be populated and used. [How] Query DC for the apporpriate linear tiling mode and populate the DCN specific gfx version structs. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Nicholas Carbones <Nicholas.Carbones@amd.com> Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-02-22Convert more 'alloc_obj' cases to default GFP_KERNEL argumentsLinus Torvalds1-2/+1
This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-22Convert 'alloc_obj' family to use the new default GFP_KERNEL argumentLinus Torvalds1-13/+13
This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21treewide: Replace kmalloc with kmalloc_obj for non-scalar typesKees Cook1-14/+15
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org>
2026-02-12drm/amd/display: Refactor virtual directory reorganize encoder and hwss files.Bhuvanachandra Pinninti1-1/+1
[why] Virtual encoders & hwss were grouped in a separate directory, not aligned with dio and link component structure. [how] Moved virtual_link_encoder and virtual_stream_encoder to dc/dio/virtual/. Moved virtual_link_hwss to dc/link/hwss/ and renamed to link_hwss_virtual. Removed dc/virtual/ directory. Updated all includes and build files (Makefiles) Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Bhuvanachandra Pinninti <bpinnint@amd.com> Signed-off-by: Tom Chung <chiahsuan.chung@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-10-28drm/amd/display: Remove dc param from check_updateDominik Kaszewski1-1/+5
[Why] dc_check_update_surfaces_for_stream should not have access to entire DC, especially not a mutable one. Concurrent checks should be able to run independently of one another, without risk of changing state. [How] * Replace dc and stream_status structs with new dc_check_config. * Move required fields from dc_debug and dc_caps to dc_check_config. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Dominik Kaszewski <dominik.kaszewski@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>
2025-10-21drm/amd/display: Fix GFP_ATOMIC abuseAurabindo Pillai1-16/+14
There is a lot GFP_ATOMIC allocations which are not in interrupt context. Change them to use GFP_KERNEL instead. Reviewed-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Tom Chung <chiahsuan.chung@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-07-15drm/amd/display: Refactor DSC cap calculationsDillon Varone1-0/+2
[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>
2025-01-10drm/amd/display: DML2.1 Post-Si CleanupRafal Ostrowski1-1/+2
[Why] There are a few cleanup and refactoring tasks that need to be done with the DML2.1 wrapper and DC interface to remove dependencies on legacy structures and N-1 prototypes. [How] Implemented pipe_ctx->global_sync. Implemented new functions to use pipe_ctx->hubp_regs and pipe_ctx->global_sync: - hubp_setup2 - hubp_setup_interdependent2 - Several other new functions for DCN 4.01 to support newer structures Removed dml21_update_pipe_ctx_dchub_regs Removed dml21_extract_legacy_watermark_set Removed dml21_populate_pipe_ctx_dlg_param Removed outdated dcn references in DML2.1 wrapper. Reviewed-by: Austin Zheng <austin.zheng@amd.com> Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Rafal Ostrowski <rostrows@amd.com> Signed-off-by: Tom Chung <chiahsuan.chung@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-12-10drm/amdgpu: rename register headers to dcn_2_0_1Leo Li1-2/+2
They were named with the incorrect dcn version. Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Sun peng Li <sunpeng.li@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-11-04drm/amd/display: Remove last parts of timing_traceDr. David Alan Gilbert1-1/+0
Commit c2c2ce1e9623 ("drm/amd/display: Optimize passive update planes.") removed the last caller of context_timing_trace. Remove it. With that gone, no one is now looking at the 'timing_trace' flag, remove it and all the places that set it. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-10-23drm/amd/display: Ensure HPD source index is valid for dcn20/dcn201 link encodersSrinivasan Shanmugam1-1/+1
This patch adds a boundary check for the hpd_source index during the link encoder creation process for dcn20/dcn201 IP's. The check ensures that the index is within the valid range of the link_enc_hpd_regs array to prevent out-of-bounds access. Cc: Tom Chung <chiahsuan.chung@amd.com> Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Cc: Roman Li <roman.li@amd.com> Cc: Alex Hung <alex.hung@amd.com> Cc: Aurabindo Pillai <aurabindo.pillai@amd.com> Cc: Harry Wentland <harry.wentland@amd.com> Cc: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Roman Li <roman.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-07-24drm/amd/display: Add null check for head_pipe in ↵Srinivasan Shanmugam1-1/+3
dcn201_acquire_free_pipe_for_layer This commit addresses a potential null pointer dereference issue in the `dcn201_acquire_free_pipe_for_layer` function. The issue could occur when `head_pipe` is null. The fix adds a check to ensure `head_pipe` is not null before asserting it. If `head_pipe` is null, the function returns NULL to prevent a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn201/dcn201_resource.c:1016 dcn201_acquire_free_pipe_for_layer() error: we previously assumed 'head_pipe' could be null (see line 1010) Cc: Tom Chung <chiahsuan.chung@amd.com> Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Cc: Roman Li <roman.li@amd.com> Cc: Alex Hung <alex.hung@amd.com> Cc: Aurabindo Pillai <aurabindo.pillai@amd.com> Cc: Harry Wentland <harry.wentland@amd.com> Cc: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-06-19drm/amd/display: Add null checker before access structsAlex Hung1-1/+3
Checks null pointer before accessing various structs. This fixes 5 NULL_RETURNS issues reported by Coverity. Reviewed-by: Harry Wentland <harry.wentland@amd.com> Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-12drm/amd/display: Update resource capabilities and debug struct for DCN201Rodrigo Siqueira1-1/+3
Some of the resource capabilities for DCN201 and the debug default option are outdated. This commit just set some of the missing configurations for DCN201. Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-12drm/amd/display: Adjust some includes used by displayRodrigo Siqueira1-1/+0
Some of the includes used in the DC can be removed and others need to be update. This commit adjusts some of those headers in the display code. Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-12drm/amd/display: Add comments to improve the code readabilityRodrigo Siqueira1-0/+1
This commit just introduce some basic comments that helps to understand the overall behavior of some structs. Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-11-17drm/amd/display: Refactor resource into component directoryMounika Adhuri2-0/+1358
[WHY] Move all resource files to unique folder resource. [HOW] Created resource folder in dc, moved the dcnxx_resource.c and dcnxx_resource.h files into corresponding new folders inside the resource and made appropriate changes for compilation in Makefiles. Reviewed-by: Martin Leung <martin.leung@amd.com> Acked-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Mounika Adhuri <moadhuri@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
generated by cgit v1.2.3 (git 2.39.0) at 2026-05-13 12:50:48 +0300