drm/amdgpu/display: make FP handling in Makefiles consistent

Use the same pattern as the DML Makefile and while we are here
add a missing x86 guard around the msse flags for DCN3.2.x.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -180,7 +180,7 @@ CLK_MGR_DCN32 = dcn32_clk_mgr.o dcn32_clk_mgr_smu_msg.o
 AMD_DAL_CLK_MGR_DCN32 = $(addprefix $(AMDDALPATH)/dc/clk_mgr/dcn32/,$(CLK_MGR_DCN32))
 
 ifdef CONFIG_X86
-CFLAGS_$(AMDDALPATH)/dc/clk_mgr/dcn32/dcn32_clk_mgr.o := -msse
+CFLAGS_$(AMDDALPATH)/dc/clk_mgr/dcn32/dcn32_clk_mgr.o := -mhard-float -msse
 endif
 
 ifdef CONFIG_PPC64
@@ -191,7 +191,6 @@ ifdef CONFIG_CC_IS_GCC
 ifeq ($(call cc-ifversion, -lt, 0701, y), y)
 IS_OLD_GCC = 1
 endif
-CFLAGS_$(AMDDALPATH)/dc/clk_mgr/dcn32/dcn32_clk_mgr.o := -mhard-float
 endif
 
 ifdef CONFIG_X86

drivers/gpu/drm/amd/display/dc/dcn201/Makefile

@@ -18,7 +18,6 @@ ifdef CONFIG_CC_IS_GCC
 ifeq ($(call cc-ifversion, -lt, 0701, y), y)
 IS_OLD_GCC = 1
 endif
-CFLAGS_$(AMDDALPATH)/dc/dcn201/dcn201_resource.o += -mhard-float
 endif
 
 ifdef CONFIG_X86

drivers/gpu/drm/amd/display/dc/dcn30/Makefile

@@ -32,8 +32,8 @@ DCN30 = dcn30_init.o dcn30_hubbub.o dcn30_hubp.o dcn30_dpp.o dcn30_optc.o \
 
 
 ifdef CONFIG_X86
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_resource.o := -msse
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o := -msse
+CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_resource.o := -mhard-float -msse
+CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o := -mhard-float -msse
 endif
 
 ifdef CONFIG_PPC64
@@ -45,8 +45,6 @@ ifdef CONFIG_CC_IS_GCC
 ifeq ($(call cc-ifversion, -lt, 0701, y), y)
 IS_OLD_GCC = 1
 endif
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_resource.o += -mhard-float
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o += -mhard-float
 endif
 
 ifdef CONFIG_X86

drivers/gpu/drm/amd/display/dc/dcn302/Makefile

@@ -8,7 +8,7 @@
 DCN3_02 = dcn302_init.o dcn302_hwseq.o dcn302_resource.o
 
 ifdef CONFIG_X86
-CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o := -msse
+CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o := -mhard-float -msse
 endif
 
 ifdef CONFIG_PPC64
@@ -16,6 +16,12 @@ CFLAGS_$(AMDDALPATH)/dc/dcn302/dcn302_resource.o := -mhard-float -maltivec
 endif
 
 ifdef CONFIG_X86
+ifdef CONFIG_CC_IS_GCC
+ifeq ($(call cc-ifversion, -lt, 0701, y), y)
+IS_OLD_GCC = 1
+endif
+endif
+
 ifdef IS_OLD_GCC
 # Stack alignment mismatch, proceed with caution.
 # GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3

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

@@ -16,7 +16,7 @@ DCN32 = dcn32_resource.o dcn32_hubbub.o dcn32_hwseq.o dcn32_init.o \
 		dcn32_mpc.o
 
 ifdef CONFIG_X86
-CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o := -msse
+CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o := -mhard-float -msse
 endif
 
 ifdef CONFIG_PPC64
@@ -27,9 +27,9 @@ 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 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
@@ -38,6 +38,7 @@ CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o += -mpreferred-stack-boundary=4
 else
 CFLAGS_$(AMDDALPATH)/dc/dcn32/dcn32_resource.o += -msse2
 endif
+endif
 
 AMD_DAL_DCN32 = $(addprefix $(AMDDALPATH)/dc/dcn32/,$(DCN32))
 

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

@@ -13,7 +13,7 @@
 DCN321 = dcn321_resource.o dcn321_dio_link_encoder.o
 
 ifdef CONFIG_X86
-CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o := -msse
+CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o := -mhard-float -msse
 endif
 
 ifdef CONFIG_PPC64
@@ -24,9 +24,9 @@ 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 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
@@ -35,6 +35,7 @@ CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o += -mpreferred-stack-boundary=4
 else
 CFLAGS_$(AMDDALPATH)/dc/dcn321/dcn321_resource.o += -msse2
 endif
+endif
 
 AMD_DAL_DCN321 = $(addprefix $(AMDDALPATH)/dc/dcn321/,$(DCN321))