Commit 9a06655e authored by Huacai Chen's avatar Huacai Chen Committed by Alex Deucher
Browse files

drm/amdgpu/display: Enable DC_FP for LoongArch 



LoongArch now provides kernel_fpu_begin() and kernel_fpu_end() that are
used like the x86 counterparts in commit 2b3bd32e ("LoongArch:
Provide kernel fpu functions"), so we can enable DC_FP on LoongArch for
supporting more DCN devices.

Signed-off-by: default avatarWANG Xuerui <kernel@xen0n.name>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
Signed-off-by: default avatarHamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent c488a937

drivers/gpu/drm/amd/display/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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

drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c

+4 −2
Original line number Diff line number Diff line
@@ -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)

drivers/gpu/drm/amd/display/dc/dml/Makefile

+5 −0
Original line number Diff line number Diff line
@@ -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