From: Harry Wentland <harry.wentland@amd.com>
Date: Fri, 19 May 2017 02:13:19 +0000 (-0400)
Subject: drm/amd/display: Limit DCN to x86 arch
X-Git-Tag: v5.15~9960^2~23^2~462
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bf2e2e2e0ea9ace6ed11423497664656943ec55f;p=platform%2Fkernel%2Flinux-starfive.git

drm/amd/display: Limit DCN to x86 arch

DCN bw calcs currently rely on the following gcc options:
  -mhard-float -msse -mpreferred-stack-boundary=4

We probably shouldn't really try building this on architectures
other than x86.

CC: Alex Deucher <Alexander.Deucher@amd.com>
CC: Christian König <christian.koenig@amd.com>
CC: Michel Dänzer <michel.daenzer@amd.com>
CC: Tony Cheng <Tony.Cheng@amd.com>
CC: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/Kconfig b/drivers/gpu/drm/amd/display/Kconfig
index 5c3bb35..89fc8e7 100644
--- a/drivers/gpu/drm/amd/display/Kconfig
+++ b/drivers/gpu/drm/amd/display/Kconfig
@@ -19,7 +19,7 @@ config DRM_AMD_DC_PRE_VEGA
 
 config DRM_AMD_DC_DCN1_0
         bool "DCN 1.0 Raven family"
-        depends on DRM_AMD_DC
+        depends on DRM_AMD_DC && X86
         help
             Choose this option if you want to have
             RV family for display engine
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
index a095472..2e4ce09 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
@@ -3,9 +3,11 @@
 # It calculates Bandwidth and Watermarks values for HW programming
 #
 
+ifeq ($(ARCH),x86)
 CFLAGS_dcn_calcs.o := -mhard-float -msse -mpreferred-stack-boundary=4
 CFLAGS_dcn_calc_auto.o := -mhard-float -msse -mpreferred-stack-boundary=4
 CFLAGS_dcn_calc_math.o := -mhard-float -msse -mpreferred-stack-boundary=4
+endif
 
 BW_CALCS = dce_calcs.o bw_fixed.o custom_float.o