[RFC 7/7] drm/amd/display: Drop float flages from DCN30 files

[Rodrigo Siqueira]

All functions that require FPU access associated with DCN30 were moved
to the specific file inside the FPU directory. For this reason, we don't
need to use the `-mhard-float -msse` flags for any DCN30 file directly,
which means that we can safely drop those flags from the Makefile and
any other unrelated FPU code.

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn30/Makefile | 30 -------------------
 .../drm/amd/display/dc/dcn30/dcn30_resource.c |  3 --
 .../gpu/drm/amd/display/dc/dcn302/Makefile    | 25 ----------------
 3 files changed, 58 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/Makefile b/drivers/gpu/drm/amd/display/dc/dcn30/Makefile
index c20331eb62e0..b7c2ae9ddfda 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/Makefile
@@ -30,36 +30,6 @@ DCN30 = dcn30_init.o dcn30_hubbub.o dcn30_hubp.o dcn30_dpp.o dcn30_optc.o \
 	dcn30_dpp_cm.o dcn30_dwb_cm.o dcn30_cm_common.o dcn30_mmhubbub.o \
 	dcn30_dio_link_encoder.o dcn30_resource.o
 
-
-ifdef CONFIG_X86
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_resource.o := -mhard-float -msse
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o := -mhard-float -msse
-endif
-
-ifdef CONFIG_PPC64
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_resource.o := -mhard-float -maltivec
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o := -mhard-float -maltivec
-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/dcn30/dcn30_resource.o += -mpreferred-stack-boundary=4
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o += -mpreferred-stack-boundary=4
-else
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_resource.o += -msse2
-CFLAGS_$(AMDDALPATH)/dc/dcn30/dcn30_optc.o += -msse2
-endif
-endif
-
 AMD_DAL_DCN30 = $(addprefix $(AMDDALPATH)/dc/dcn30/,$(DCN30))
 
 AMD_DISPLAY_FILES += $(AMD_DAL_DCN30)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
index cd2598bd193f..d00f98174f21 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
@@ -1403,9 +1403,6 @@ bool dcn30_release_post_bldn_3dlut(
 	return ret;
 }
 
-#define fixed16_to_double(x) (((double) x) / ((double) (1 << 16)))
-#define fixed16_to_double_to_cpu(x) fixed16_to_double(le32_to_cpu(x))
-
 static bool dcn30_split_stream_for_mpc_or_odm(
 		const struct dc *dc,
 		struct resource_context *res_ctx,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/Makefile b/drivers/gpu/drm/amd/display/dc/dcn302/Makefile
index 8d4924b7dc22..3ea9bff27912 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn302/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/Makefile
@@ -12,31 +12,6 @@
 
 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_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