Changes in Kconfig

75948742 - drm/amd/display: add CEC notifier to amdgpu driver

Wed, 08 Jan 2025 09:18:49 +0000

drm/amd/display: add CEC notifier to amdgpu driverThis patch adds the cec_notifier feature to amdgpu driver.The changes will allow amdgpu driver code to notify EDIDand HPD changes to an eventual CEC adapter.Signed-off-by: Kun Liu Reviewed-by: Mario Limonciello Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

4217ef9a - drm/amd/display: Allow building DC with clang on LoongArch

Fri, 15 Nov 2024 15:02:25 +0000

drm/amd/display: Allow building DC with clang on LoongArchClang on LoongArch (18+) appears to be unaffected by the bug causingexcessive stack usage in calculate_bandwidth(). But when building DC_FPsupport the stack frame size can be as large as 2816 bytes, which causesthe FRAME_WARN build warnings. So on LoongArch we allow building DC withclang, but disable DC_FP by default.The help message is also updated.Tested-by: Rui Wang Signed-off-by: Huacai Chen Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

301daa34 - drm/amd/display: Disable CONFIG_DRM_AMD_DC_FP for RISC-V with clang

Fri, 14 Jun 2024 19:54:52 +0000

drm/amd/display: Disable CONFIG_DRM_AMD_DC_FP for RISC-V with clangCommit 77acc6b55ae4 ("riscv: add support for kernel-mode FPU") andcommit a28e4b672f04 ("drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT")enabled support for CONFIG_DRM_AMD_DC_FP with RISC-V. Unfortunately,this exposed -Wframe-larger-than warnings (which become fatal withCONFIG_WERROR=y) when building ARCH=riscv allmodconfig with clang: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:58:13: error: stack frame size (2448) exceeds limit (2048) in 'DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation' [-Werror,-Wframe-larger-than] 58 | static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation( | ^ 1 error generated.Many functions in this file use a large number of parameters, which mustbe passed on the stack at a certain pointer due to register exhaustion,which can cause high stack usage when inlining and issues with stackslot analysis get involved. While the compiler can and should do better(as GCC uses less than half the amount of stack space for the samefunction), it is not as simple as a fix as adjusting the functions notto take a large number of parameters.Unfortunately, modifying these files to avoid the problem is a difficultto justify approach because any revisions to the files in the kerneltree never make it back to the original source (so copies of the codefor newer hardware revisions just reintroduce the issue) and the filesare hard to read/modify due to being "gcc-parsable HW gospel, comingstraight from HW engineers".Avoid building the problematic code for RISC-V by modifying the existingcondition for arm64 that exists for the same reason. Factor out thelogical not to make the condition a little more readable naturally.Fixes: a28e4b672f04 ("drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT")Reported-by: Palmer Dabbelt Closes: https://lore.kernel.org/20240530145741.7506-2-palmer@rivosinc.com/Reviewed-by: Harry Wentland Signed-off-by: Nathan Chancellor Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

f5d75327 - drm/amd/display: Fix invalid Copyright notice

Mon, 22 Apr 2024 14:17:17 +0000

drm/amd/display: Fix invalid Copyright notice[Why && How]Copyright notice failed in the Palamida scan and make changes toalign with our guidelines.Acked-by: Tom Chung Signed-off-by: Leo Ma Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

a28e4b67 - drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT

Fri, 29 Mar 2024 07:18:28 +0000

drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORTNow that all previously-supported architectures selectARCH_HAS_KERNEL_FPU_SUPPORT, this code can depend on that symbol insteadof the existing list of architectures. It can also take advantage of thecommon kernel-mode FPU API and method of adjusting CFLAGS.Link: https://lkml.kernel.org/r/20240329072441.591471-14-samuel.holland@sifive.comSigned-off-by: Samuel Holland Acked-by: Alex Deucher Reviewed-by: Christoph Hellwig Acked-by: Christian König Cc: Borislav Petkov (AMD) Cc: Catalin Marinas Cc: Dave Hansen Cc: Huacai Chen Cc: Ingo Molnar Cc: Jonathan Corbet Cc: Masahiro Yamada Cc: Michael Ellerman Cc: Nathan Chancellor Cc: Nicolas Schier Cc: Palmer Dabbelt Cc: Russell King Cc: Thomas Gleixner Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

6f7cd037 - drm/amd/display: Allow building DC with clang on RISC-V

Mon, 17 Jul 2023 22:29:23 +0000

drm/amd/display: Allow building DC with clang on RISC-Vclang on RISC-V appears to be unaffected by the bug causing excessivestack usage in calculate_bandwidth(). clang 16 with -fstack-usagereports a 304 byte stack frame size with CONFIG_ARCH_RV32I, and 512bytes with CONFIG_ARCH_RV64I.Reviewed-by: Nathan Chancellor Tested-by: Nathan Chancellor Signed-off-by: Samuel Holland Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

d155cfff - drm/amdgpu: display/Kconfig: replace leading spaces with tab

Tue, 06 Jun 2023 13:33:28 +0000

drm/amdgpu: display/Kconfig: replace leading spaces with tabThis patch replace the leading spaces with tab, make them keep aligned withthe rest of the config options. No functional change.Signed-off-by: Sui Jingfeng Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

9a06655e - drm/amdgpu/display: Enable DC_FP for LoongArch

Mon, 08 May 2023 03:09:41 +0000

drm/amdgpu/display: Enable DC_FP for LoongArchLoongArch now provides kernel_fpu_begin() and kernel_fpu_end() that areused like the x86 counterparts in commit 2b3bd32ea3a22ea2d ("LoongArch:Provide kernel fpu functions"), so we can enable DC_FP on LoongArch forsupporting more DCN devices.Signed-off-by: WANG Xuerui Signed-off-by: Huacai Chen Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

78f09298 - powerpc/64: Always build with 128-bit long double

Tue, 04 Apr 2023 10:28:47 +0000

powerpc/64: Always build with 128-bit long doubleThe amdgpu driver builds some of its code with hard-float enabled,whereas the rest of the kernel is built with soft-float.When building with 64-bit long double, if soft-float and hard-floatobjects are linked together, the build fails due to incompatible ABItags.In the past there have been build errors in the amdgpu driver caused bythis, some of those were due to bad intermingling of soft & hard-floatcode, but those issues have now all been fixed since commit 58ddbecb14c7("drm/amd/display: move remaining FPU code to dml folder").However it's still possible for soft & hard-float objects to end uplinked together, if the amdgpu driver is built-in to the kernel alongwith the test_emulate_step.c code, which uses soft-float. That happensin an allyesconfig build.Currently those build errors are avoided because the amdgpu driver isgated on 128-bit long double being enabled. But that's not a detail theamdgpu driver should need to be aware of, and if another driver startsusing hard-float the same problem would occur.All versions of the 64-bit ABI specify that long-double is 128-bits.However some compilers, notably the kernel.org ones, are built to use64-bit long double by default.Apart from this issue of soft vs hard-float, the kernel doesn't carewhat size long double is. In particular the kernel using 128-bit longdouble doesn't impact userspace's ability to use 64-bit long double, asmusl does.So always build the 64-bit kernel with 128-bit long double. That shouldavoid any build errors due to the incompatible ABI tags. Excluding thecode that uses soft/hard-float, the vmlinux is identical with/withoutthe flag.It does mean any code which is incorrectly intermingling soft &hard-float code will build without error, so those bugs will need to becaught by testing rather than at build time.For more background see: - commit d11219ad53dc ("amdgpu: disable powerpc support for the newer display engine") - commit c653c591789b ("drm/amdgpu: Re-enable DCN for 64-bit powerpc") - https://lore.kernel.org/r/dab9cbd8-2626-4b99-8098-31fe76397d2d@app.fastmail.comSigned-off-by: Michael Ellerman Reviewed-by: Segher Boessenkool Link: https://msgid.link/20230404102847.3303623-1-mpe@ellerman.id.au List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

4652ae7a - drm/amd/display: Rename DCN config to FP

Tue, 14 Feb 2023 19:14:49 +0000

drm/amd/display: Rename DCN config to FP[Why & How]The only reason we have the DCN config is forfloating point support. Rename it to make thatclear and (hopefully) avoid misuse of the configin the future.Reviewed-by: Rodrigo Siqueira Acked-by: Qingqing Zhuo Signed-off-by: Harry Wentland Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

1e88eb1b - drm/amd/display: Drop CONFIG_DRM_AMD_DC_HDCP

Mon, 13 Feb 2023 16:19:31 +0000

drm/amd/display: Drop CONFIG_DRM_AMD_DC_HDCP[Why & How]There is no reason we still need a config option for this.Reviewed-by: Wenjing Liu Acked-by: Qingqing Zhuo Signed-off-by: Harry Wentland Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

455ad259 - drm/amdgpu: Select DRM_DISPLAY_HDCP_HELPER in amdgpu

Mon, 13 Feb 2023 18:17:16 +0000

drm/amdgpu: Select DRM_DISPLAY_HDCP_HELPER in amdgpuKeeps this selection with the rest of the DRM HELPERselection.Signed-off-by: Harry Wentland Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

6f6cb171 - drm/amdgpu: temporarily disable broken Clang builds due to blown stack-frame

Fri, 25 Nov 2022 12:07:49 +0000

drm/amdgpu: temporarily disable broken Clang builds due to blown stack-framePatch series "Fix a bunch of allmodconfig errors", v2.Since b339ec9c229aa ("kbuild: Only default to -Werror if COMPILE_TEST")WERROR now defaults to COMPILE_TEST meaning that it's enabled forallmodconfig builds. This leads to some interesting build failures whenusing Clang, each resolved in this set.With this set applied, I am able to obtain a successful allmodconfig Armbuild.This patch (of 2):calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 ||ARM64) architectures built with Clang (all released versions), whereby thestack frame gets blown up to well over 5k. This would cause an immediatekernel panic on most architectures. We'll revert this when the followingbug report has been resolved:https://github.com/llvm/llvm-project/issues/41896.Link: https://lkml.kernel.org/r/20221125120750.3537134-1-lee@kernel.orgLink: https://lkml.kernel.org/r/20221125120750.3537134-2-lee@kernel.orgSigned-off-by: Lee Jones Suggested-by: Arnd Bergmann Acked-by: Arnd Bergmann Cc: Alex Deucher Cc: "Christian König" Cc: Daniel Vetter Cc: David Airlie Cc: Harry Wentland Cc: Lee Jones Cc: Leo Li Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: "Pan, Xinhui" Cc: Rodrigo Siqueira Cc: Thomas Zimmermann Cc: Tom Rix Cc: Signed-off-by: Andrew Morton List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

79b72db6 - drm/amd/display: add DCN support for ARM64

Mon, 31 Oct 2022 19:37:40 +0000

drm/amd/display: add DCN support for ARM64After moving all FPU code to the DML folder, we can enable DCN supportfor the ARM64 platform. Remove the -mgeneral-regs-only CFLAG from thecode in the DML folder that needs to use hardware FPU, and add a controlmechanism for ARM Neon.Reviewed-by: Rodrigo Siqueira Signed-off-by: Ao Zhong Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

49791b98 - drm/amdgpu/display: remove unneeded "default n" options

Fri, 09 Sep 2022 19:53:30 +0000

drm/amdgpu/display: remove unneeded "default n" optionsRemove "default n" options. If the "default" line is removed, itdefaults to 'n'.Signed-off-by: Jingyu Wang Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

c653c591 - drm/amdgpu: Re-enable DCN for 64-bit powerpc

Mon, 25 Jul 2022 04:37:29 +0000

drm/amdgpu: Re-enable DCN for 64-bit powerpcCommit d11219ad53dc ("amdgpu: disable powerpc support for the newerdisplay engine") disabled the DCN driver for all of powerpc due tounresolved build failures with some compilers.Further digging shows that the build failures only occur with compilersthat default to 64-bit long double.Both the ppc64 and ppc64le ABIs define long double to be 128-bits, butthere are compilers in the wild that default to 64-bits. The compilersprovided by the major distros (Fedora, Ubuntu) default to 128-bits andare not affected by the build failure.There is a compiler flag to force 128-bit long double, which may be thecorrect long term fix, but as an interim fix only allow building the DCNdriver if long double is 128-bits by default.The bisection in commit d11219ad53dc must have gone off the rails atsome point, the build failure occurs all the way back to the originalcommit that enabled DCN support on powerpc, at least with sometoolchains.Depends-on: d11219ad53dc ("amdgpu: disable powerpc support for the newer display engine")Fixes: 16a9dea110a6 ("amdgpu: Enable initial DCN support on POWER")Signed-off-by: Michael Ellerman Acked-by: Alex Deucher Reviewed-by: Dan Horák Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2100Link: https://lore.kernel.org/r/20220725123918.1903255-1-mpe@ellerman.id.au List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

3876a8b5 - drm/amd/display: Enable building new display engine with KCOV enabled

Tue, 12 Jul 2022 22:42:47 +0000

drm/amd/display: Enable building new display engine with KCOV enabledThe new display engine uses floating point math, which is not supportedby KCOV. Commit 9d1d02ff3678 ("drm/amd/display: Don't build DCN1 when kcovis enabled") tried to work around the problem by disablingCONFIG_DRM_AMD_DC_DCN if KCOV_INSTRUMENT_ALL and KCOV_ENABLE_COMPARISONSare enabled. The result is that KCOV can not be enabled on systems whichrequire this display engine. A much simpler and less invasive solution isto disable KCOV selectively when compiling the display enagine whilekeeping it enabled for the rest of the kernel.Fixes: 9d1d02ff3678 ("drm/amd/display: Don't build DCN1 when kcov is enabled")Cc: Arnd Bergmann Cc: Leo Li Reviewed-by: Harry Wentland Signed-off-by: Guenter Roeck Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

d11219ad - amdgpu: disable powerpc support for the newer display engine

Wed, 13 Jul 2022 19:36:50 +0000

amdgpu: disable powerpc support for the newer display engineThe DRM_AMD_DC_DCN display engine support (Raven, Navi, and newer) hasnot been building cleanly on powerpc and causes link errors due tomixing hard- and soft-float object files: powerpc64-linux-ld: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses hard float, drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_resource.o uses soft float powerpc64-linux-ld: failed to merge target specific data of file drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_resource.o [..]and while patches are floating around, it's not exactly obvious what isgoing on.The problem bisects to commit 41b7a347bf14 ("powerpc: Book3S 64-bitoutline-only KASAN support") but that is probably more about changingconfig variables than the fundamental cause.Despite the bisection result, a more directly related commit seems to be26f4712aedbd ("drm/amd/display: move FPU related code from dcn31 todml/dcn31 folder"). It's probably a combination of the two.This has been going on since the merge window, without any final word.So instead of blindly applying patches that may or may not be the rightthing, let's disable this for now.As Michael Ellerman says: "IIUIC this code was never enabled on ppc before, so disabling it seems like a reasonable fix to get the build clean"and once we have more actual feedback (and find any potential users) wecan always re-enable it with the patch that fixes the issues andback-port as necessary.Fixes: 41b7a347bf14 ("powerpc: Book3S 64-bit outline-only KASAN support")Fixes: 26f4712aedbd ("drm/amd/display: move FPU related code from dcn31 to dml/dcn31 folder")Reported-and-tested-by: Guenter Roeck Link: https://lore.kernel.org/all/20220606153910.GA1773067@roeck-us.net/Link: https://lore.kernel.org/all/20220618232737.2036722-1-linux@roeck-us.net/Link: https://lore.kernel.org/all/20220713050724.GA2471738@roeck-us.net/Acked-by: Michael Ellerman Acked-by: Alex Deucher Signed-off-by: Linus Torvalds List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

6a99099f - drm/display: Move HDCP helpers into display-helper module

Thu, 21 Apr 2022 07:31:06 +0000

drm/display: Move HDCP helpers into display-helper moduleMove DRM's HDCP helper library into the display/ subdirectory and addit to DRM's display helpers. Split the header file into core and helpers.Update all affected drivers. No functional changes.v3: * fix Kconfig dependenciesv2: * fix include statements (Jani, Javier) * update Kconfig symbolsSigned-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-7-tzimmermann@suse.de List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig

4702b34d - drm/amdgpu/display: fix dependencies for DRM_AMD_DC_SI

Fri, 01 Oct 2021 19:40:00 +0000

drm/amdgpu/display: fix dependencies for DRM_AMD_DC_SIDepends on DRM_AMDGPU_SI and DRM_AMD_DCReviewed-by: Christian König Signed-off-by: Alex Deucher List of files: /linux-6.15/drivers/gpu/drm/amd/display/Kconfig