[PATCH 2/2] drm/amd/display: Fix DCN302 makefile

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Some setups will fail to build. So copy dcn301 makefile setup
which is known to work

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx>
---
 .../gpu/drm/amd/display/dc/dcn302/Makefile    | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/Makefile b/drivers/gpu/drm/amd/display/dc/dcn302/Makefile
index 3ea9bff27912..36e44e1b07fa 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn302/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/Makefile
@@ -12,6 +12,35 @@
 
 DCN3_02 = dcn302_init.o dcn302_hwseq.o dcn302_resource.o
 
+ifdef CONFIG_X86
+CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o := -mhard-float -msse
+endif
+
+ifdef CONFIG_PPC64
+CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o := -mhard-float -maltivec
+endif
+
+ifdef CONFIG_ARM64
+CFLAGS_REMOVE_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o := -mgeneral-regs-only
+endif
+
+ifdef CONFIG_CC_IS_GCC
+ifeq ($(call cc-ifversion, -lt, 0701, y), y)
+IS_OLD_GCC = 1
+endif
+endif
+
+ifdef CONFIG_X86
+ifdef IS_OLD_GCC
+# Stack alignment mismatch, proceed with caution.
+# GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3
+# (8B stack alignment).
+CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o += -mpreferred-stack-boundary=4
+else
+CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o += -msse2
+endif
+endif
+
 AMD_DAL_DCN3_02 = $(addprefix $(AMDDALPATH)/dc/dcn302/,$(DCN3_02))
 
 AMD_DISPLAY_FILES += $(AMD_DAL_DCN3_02)
-- 
2.25.1

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