linux/drivers/gpu/drm/amd/display/dc/resource/dce60, branch master

drm/amd/display: Allow constructing DCE6 link encoder without DDC

2026-04-29T14:41:28Z

When the DDC channel ID is set to CHANNEL_ID_UNKNOWN, pass NULL to the AUX regs array. This is necessary to support embedded connectors without DDC. Fixes: 7c15fd86aaec ("drm/amd/display: dc/dce: add initial DCE6 support (v10)") Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/5192 Signed-off-by: Timur Kristóf Signed-off-by: Alex Deucher (cherry picked from commit 38a70e50b22a188ff601740d64dd75f46213121f)

drm/amd/display: Fix DCE LVDS handling

2026-03-24T17:34:32Z

LVDS does not use an HPD pin so it may be invalid. Handle this case correctly in link encoder creation. Fixes: 7c8fb3b8e9ba ("drm/amd/display: Add hpd_source index check for DCE60/80/100/110/112/120 link encoders") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/5012 Cc: Srinivasan Shanmugam Cc: Roman Li Reviewed-by: Roman Li Reviewed-by: Srinivasan Shanmugam Signed-off-by: Alex Deucher

drm/amd/display: Use dce_audio_create for DCE 6

2026-02-23T19:24:39Z

The only difference between DCE 6 and other DCE versions is that DCE 6 doesn't support DCCG_AUDIO_DTO2_USE_512FBR_DTO. Recently a check was added to dce_aud_wall_dto_setup() to check that. So now DCE 6 can just use dce_aud_wall_dto_setup() just like other DCE versions. Clean up DCE 6 specific audio functions which were otherwise identical to the rest. Signed-off-by: Timur Kristóf Reviewed-by: Rodrigo Siqueira Reviewed-by: Alex Hung Signed-off-by: Alex Deucher

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-22T04:03:00Z

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

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

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

drm/amd/display: Remove unneeded DAC link encoder register

2026-02-19T17:16:12Z

Not needed anymore since we use the VBIOS function. Signed-off-by: Timur Kristóf Tested-by: Mauro Rossi Reviewed-by: Alex Hung Signed-off-by: Alex Deucher

drm/amd/display: Set CRTC source for DAC using registers

2026-02-19T17:16:12Z

Apparently the VBIOS SelectCRTC_Source function overwrites a few registers (such as FMT_*) which DC writes in a different place, which can cause problems. Instead of using the SelectCRTC_Source function from the VBIOS, use the DAC_SOURCE_SELECT register directly, similarly to how it is done for digital link encoders. Fixes: 3be26d81b150 ("drm/amd/display: Support DAC in dce110_hwseq") Signed-off-by: Timur Kristóf Tested-by: Mauro Rossi Reviewed-by: Alex Hung Signed-off-by: Alex Deucher

drm/amd/display: Only use analog link encoder with analog engine

2026-02-18T15:41:34Z

Some GPUs have analog connectors that work with a DP bridge chip and don't actually have an internal DAC: Those should not use the analog link encoder code path. Fixes: 0fbe321a93ce ("drm/amd/display: Implement DCE analog link encoders (v2)") Signed-off-by: Timur Kristóf Reviewed-by: Alex Hung Signed-off-by: Alex Deucher

drm/amd/display: Use DCE 6 link encoder for DCE 6 analog connectors

2026-02-18T15:41:34Z

DCE 6 should use the DCE 6 specific link encoder. This was a copy paste mistake. Fixes: 0fbe321a93ce ("drm/amd/display: Implement DCE analog link encoders (v2)") Signed-off-by: Timur Kristóf Reviewed-by: Alex Hung Signed-off-by: Alex Deucher