linux-toradex.git/drivers/gpu/drm/amd/display/dc/irq/dcn303, branch master Linux kernel for Apalis and Colibri modules drm/amd/display: Fixed Silence complier warnings in dc 2026-03-30T19:12:15+00:00 Gaghik Khachatrian gaghik.khachatrian@amd.com 2026-03-09T21:18:25+00:00 f82480fafedf622541276d48a3b4fed20ce5d866 [Why] Resolve compiler warnings by marking unused parameters explicitly. [How] In .c and .h function definitions, keep parameter names in signatures and add a line with `(void)param;` in function body Preserved function signatures and avoids breaking code paths that may reference the parameter under conditional compilation. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Reviewed-by: Austin Zheng <austin.zheng@amd.com> Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com> Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[Why]
Resolve compiler warnings by marking unused parameters explicitly.

[How]
In .c and .h function definitions, keep parameter names
in signatures and add a line with `(void)param;` in function body

Preserved function signatures and avoids breaking code paths that
may reference the parameter under conditional compilation.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Reviewed-by: Austin Zheng <austin.zheng@amd.com>
Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amd/display: Fix Silence signed/unsighed mismatch warning in dc 2026-03-30T18:55:17+00:00 Gaghik Khachatrian gaghik.khachatrian@amd.com 2026-03-12T19:42:01+00:00 26ebcac0566b78a9e6bfb71fb6b3436e0fe251a6 [Why] Implicit signed-to-unsigned conversions caused compiler warnings in DC paths. [How] Added explicit (unsigned int)/(uint32_t) casts for sentinel -1 assignments and IRQ ~MASK initializers, with small cast alignment in logging/DPCD code. Functionality and behavior is unchanged; only type intent is explicit. Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com> Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[Why]
Implicit signed-to-unsigned conversions caused compiler
warnings in DC paths.

[How]
Added explicit (unsigned int)/(uint32_t) casts for sentinel -1
assignments and IRQ ~MASK initializers, with small cast alignment
in logging/DPCD code.

Functionality and behavior is unchanged; only type intent is explicit.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-22T01:09:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-22T00:37:42+00:00 bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 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> 
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>
treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21T09:02:28+00:00 Kees Cook kees@kernel.org 2026-02-21T07:49:23+00:00 69050f8d6d075dc01af7a5f2f550a8067510366f 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> 
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>
drm/amd/display/dc/irq: Remove duplications of hpd_ack function from IRQ 2025-05-13T13:37:09+00:00 Sebastian Aguilera Novoa saguileran@ime.usp.br 2025-05-03T03:59:46+00:00 7e340d3ceacf75e3e088fcc3dd4f8729d6c079c3 The major of dcn and dce irqs share a copy-pasted collection of copy-pasted function, which is: hpd_ack. This patch removes the multiple copy-pasted by moving them to the irq_service.c and make the irq_service's calls the functions implemented by the irq_service.c instead. The hpd_ack function is replaced by hpd0_ack and hpd1_ack, the required constants are also added. The changes were not tested on actual hardware. I am only able to verify that the changes keep the code compileable and do my best to look repeatedly if I am not actually changing any code. Signed-off-by: Sebastian Aguilera Novoa <saguileran@ime.usp.br> Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
The major of dcn and dce irqs share a copy-pasted collection
of copy-pasted function, which is: hpd_ack.

This patch removes the multiple copy-pasted by moving them to
the irq_service.c and make the irq_service's
calls the functions implemented by the irq_service.c
instead.

The hpd_ack function is replaced by hpd0_ack and hpd1_ack, the
required constants are also added.

The changes were not tested on actual hardware. I am only able
to verify that the changes keep the code compileable and do my
best to look repeatedly if I am not actually changing any code.

Signed-off-by: Sebastian Aguilera Novoa <saguileran@ime.usp.br>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amd/display: Fix copyright notice in DC code 2023-10-26T22:41:23+00:00 Stylon Wang stylon.wang@amd.com 2023-10-19T14:49:15+00:00 78964fcac47fc1525ecb4c37cd5fbc873c28320b [Why & How] Fix incomplete copyright notice in DC code. Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Stylon Wang <stylon.wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[Why & How]
Fix incomplete copyright notice in DC code.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amd/display: Add DCN35 IRQ 2023-08-30T19:51:15+00:00 Qingqing Zhuo Qingqing.Zhuo@amd.com 2023-08-03T03:41:53+00:00 9d6fa6760e125542928b3f673620d1f769a55476 [Why & How] - Add IRQ handling for DCN35 - Update IRQ files for other DCNs in accordance to change in irq_service.h Signed-off-by: Qingqing Zhuo <Qingqing.Zhuo@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[Why & How]
- Add IRQ handling for DCN35
- Update IRQ files for other DCNs in accordance
  to change in irq_service.h

Signed-off-by: Qingqing Zhuo <Qingqing.Zhuo@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amd/display: Support vertical interrupt 0 for all dcn ASIC 2022-07-20T20:04:11+00:00 Wayne Lin Wayne.Lin@amd.com 2021-03-10T15:40:01+00:00 8a9899c95d1cd709d441960ca325c6c8184978bb [Why] When CONFIG_DRM_AMD_SECURE_DISPLAY is enabled, it will try to register vertical interrupt 0 for specific task. Currently, only dcn10 have defined relevant info for vertical interrupt 0. If we enable CONFIG_DRM_AMD_SECURE_DISPLAY for other dcn ASIC, will get DC_IRQ_SOURCE_INVALID while calling dc_interrupt_to_irq_source() and cause pointer errors. [How] Add support of vertical interrupt 0 for all dcn ASIC. Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Acked-by: Alan Liu <HaoPing.Liu@amd.com> Signed-off-by: Wayne Lin <Wayne.Lin@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[Why]
When CONFIG_DRM_AMD_SECURE_DISPLAY is enabled, it will try
to register vertical interrupt 0 for specific task.

Currently, only dcn10 have defined relevant info for vertical interrupt
0. If we enable CONFIG_DRM_AMD_SECURE_DISPLAY for other dcn ASIC, will
get DC_IRQ_SOURCE_INVALID while calling dc_interrupt_to_irq_source() and
cause pointer errors.

[How]
Add support of vertical interrupt 0 for all dcn ASIC.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amd/display: Edit license info for beige goby DC files 2021-05-20T02:42:04+00:00 Aurabindo Pillai aurabindo.pillai@amd.com 2021-05-11T21:41:16+00:00 015b448985a43e897d3fe82a691071578cd103d7 [How] * Add MIT license to all new files as SPDX tag. * Fix copyright year Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[How]
* Add MIT license to all new files as SPDX tag.
* Fix copyright year

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amd/display: Initial DC support for Beige Goby 2021-05-20T02:42:00+00:00 Aurabindo Pillai aurabindo.pillai@amd.com 2021-03-15T18:55:24+00:00 cd6d421e3d1ad5926b74091254e345db730e7706 [Why&How] Add Beige Goby (DCN303) resource, irq service, & dmub loader. v2: fix nbio include (Alex) Signed-off-by: Chris Park <Chris.Park@amd.com> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
[Why&How]
Add Beige Goby (DCN303) resource, irq service, & dmub loader.

v2: fix nbio include (Alex)

Signed-off-by: Chris Park <Chris.Park@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>