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drm/amdgpu/display: Enable DC_FP for LoongArch

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LoongArch now provides kernel_fpu_begin() and kernel_fpu_end() that are
used like the x86 counterparts in commit 2b3bd32ea3 ("LoongArch:
Provide kernel fpu functions"), so we can enable DC_FP on LoongArch for
supporting more DCN devices.

Signed-off-by: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huacai Chen 2023-05-08 11:09:41 +08:00 committed by Alex Deucher
parent c488a9370d
commit 9a06655e73
3 changed files with 10 additions and 3 deletions
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2
drivers/gpu/drm/amd/display/Kconfig
View File

@ -8,7 +8,7 @@ config DRM_AMD_DC
depends on BROKEN || !CC_IS_CLANG || X86_64 || SPARC64 || ARM64
select SND_HDA_COMPONENT if SND_HDA_CORE
# !CC_IS_CLANG: https://github.com/ClangBuiltLinux/linux/issues/1752
select DRM_AMD_DC_FP if (X86 || PPC64 || (ARM64 && KERNEL_MODE_NEON && !CC_IS_CLANG))
select DRM_AMD_DC_FP if (X86 || LOONGARCH || PPC64 || (ARM64 && KERNEL_MODE_NEON && !CC_IS_CLANG))
help
Choose this option if you want to use the new display engine
support for AMDGPU. This adds required support for Vega and

6
drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c
View File

@ -33,6 +33,8 @@
#include <asm/cputable.h>
#elif defined(CONFIG_ARM64)
#include <asm/neon.h>
#elif defined(CONFIG_LOONGARCH)
#include <asm/fpu.h>
#endif
/**
@ -88,7 +90,7 @@ void dc_fpu_begin(const char *function_name, const int line)
*pcpu += 1;
if (*pcpu == 1) {
#if defined(CONFIG_X86)
#if defined(CONFIG_X86) || defined(CONFIG_LOONGARCH)
migrate_disable();
kernel_fpu_begin();
#elif defined(CONFIG_PPC64)
@ -128,7 +130,7 @@ void dc_fpu_end(const char *function_name, const int line)
pcpu = get_cpu_ptr(&fpu_recursion_depth);
*pcpu -= 1;
if (*pcpu <= 0) {
#if defined(CONFIG_X86)
#if defined(CONFIG_X86) || defined(CONFIG_LOONGARCH)
kernel_fpu_end();
migrate_enable();
#elif defined(CONFIG_PPC64)

5
drivers/gpu/drm/amd/display/dc/dml/Makefile
View File

@ -38,6 +38,11 @@ ifdef CONFIG_ARM64
dml_rcflags := -mgeneral-regs-only
endif
ifdef CONFIG_LOONGARCH
dml_ccflags := -mfpu=64
dml_rcflags := -msoft-float
endif
ifdef CONFIG_CC_IS_GCC
ifneq ($(call gcc-min-version, 70100),y)
IS_OLD_GCC = 1