mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-01-15 13:56:43 -05:00
c653c59178
Commitd11219ad53("amdgpu: disable powerpc support for the newer display engine") disabled the DCN driver for all of powerpc due to unresolved build failures with some compilers. Further digging shows that the build failures only occur with compilers that default to 64-bit long double. Both the ppc64 and ppc64le ABIs define long double to be 128-bits, but there are compilers in the wild that default to 64-bits. The compilers provided by the major distros (Fedora, Ubuntu) default to 128-bits and are not affected by the build failure. There is a compiler flag to force 128-bit long double, which may be the correct long term fix, but as an interim fix only allow building the DCN driver if long double is 128-bits by default. The bisection in commitd11219ad53must have gone off the rails at some point, the build failure occurs all the way back to the original commit that enabled DCN support on powerpc, at least with some toolchains. Depends-on:d11219ad53("amdgpu: disable powerpc support for the newer display engine") Fixes:16a9dea110("amdgpu: Enable initial DCN support on POWER") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Dan Horák <dan@danny.cz> Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2100 Link: https://lore.kernel.org/r/20220725123918.1903255-1-mpe@ellerman.id.au
59 lines
1.6 KiB
Plaintext
59 lines
1.6 KiB
Plaintext
# SPDX-License-Identifier: MIT
|
|
menu "Display Engine Configuration"
|
|
depends on DRM && DRM_AMDGPU
|
|
|
|
config DRM_AMD_DC
|
|
bool "AMD DC - Enable new display engine"
|
|
default y
|
|
select SND_HDA_COMPONENT if SND_HDA_CORE
|
|
select DRM_AMD_DC_DCN if (X86 || PPC_LONG_DOUBLE_128) && !(KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS)
|
|
help
|
|
Choose this option if you want to use the new display engine
|
|
support for AMDGPU. This adds required support for Vega and
|
|
Raven ASICs.
|
|
|
|
config DRM_AMD_DC_DCN
|
|
def_bool n
|
|
help
|
|
Raven, Navi, and newer family support for display engine
|
|
|
|
config DRM_AMD_DC_HDCP
|
|
bool "Enable HDCP support in DC"
|
|
depends on DRM_AMD_DC
|
|
select DRM_DISPLAY_HDCP_HELPER
|
|
help
|
|
Choose this option if you want to support HDCP authentication.
|
|
|
|
config DRM_AMD_DC_SI
|
|
bool "AMD DC support for Southern Islands ASICs"
|
|
depends on DRM_AMDGPU_SI
|
|
depends on DRM_AMD_DC
|
|
default n
|
|
help
|
|
Choose this option to enable new AMD DC support for SI asics
|
|
by default. This includes Tahiti, Pitcairn, Cape Verde, Oland.
|
|
Hainan is not supported by AMD DC and it has no physical DCE6.
|
|
|
|
config DEBUG_KERNEL_DC
|
|
bool "Enable kgdb break in DC"
|
|
depends on DRM_AMD_DC
|
|
depends on KGDB
|
|
help
|
|
Choose this option if you want to hit kdgb_break in assert.
|
|
|
|
config DRM_AMD_SECURE_DISPLAY
|
|
bool "Enable secure display support"
|
|
default n
|
|
depends on DEBUG_FS
|
|
depends on DRM_AMD_DC_DCN
|
|
help
|
|
Choose this option if you want to
|
|
support secure display
|
|
|
|
This option enables the calculation
|
|
of crc of specific region via debugfs.
|
|
Cooperate with specific DMCU FW.
|
|
|
|
|
|
endmenu
|