drm/amdgpu/display: fix DCN3.2 Makefiles for non-x86

Add proper handling for PPC64.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn32/Makefile

@@ -15,12 +15,19 @@ DCN32 = dcn32_resource.o dcn32_hubbub.o dcn32_hwseq.o dcn32_init.o \
 		dcn32_dio_stream_encoder.o dcn32_dio_link_encoder.o dcn32_hpo_dp_link_encoder.o \
 		dcn32_mpc.o
 
-CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o := -mhard-float -msse
+ifdef CONFIG_X86
+CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o := -msse
+endif
+
+ifdef CONFIG_PPC64
+CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o := -mhard-float -maltivec
+endif
 
 ifdef CONFIG_CC_IS_GCC
 ifeq ($(call cc-ifversion, -lt, 0701, y), y)
 IS_OLD_GCC = 1
 endif
+CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o += -mhard-float
 endif
 
 ifdef IS_OLD_GCC

drivers/gpu/drm/amd/display/dc/dcn321/Makefile

@@ -12,12 +12,19 @@
 
 DCN321 = dcn321_resource.o dcn321_dio_link_encoder.o
 
-CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o := -mhard-float -msse
+ifdef CONFIG_X86
+CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o := -msse
+endif
+
+ifdef CONFIG_PPC64
+CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o := -mhard-float -maltivec
+endif
 
 ifdef CONFIG_CC_IS_GCC
 ifeq ($(call cc-ifversion, -lt, 0701, y), y)
 IS_OLD_GCC = 1
 endif
+CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o += -mhard-float
 endif
 
 ifdef IS_OLD_GCC