1 files changed, 93 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2068-drm-amd-display-add-some-math-functions-for-dcn_calc.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2068-drm-amd-display-add-some-math-functions-for-dcn_calc.patch
new file mode 100644
index 00000000..72620b4a
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2068-drm-amd-display-add-some-math-functions-for-dcn_calc.patch
@@ -0,0 +1,93 @@
+From 0b9bde6585667175efcf1a59e408faa3b9b81d1d Mon Sep 17 00:00:00 2001
+From: Charlene Liu <charlene.liu@amd.com>
+Date: Thu, 16 May 2019 22:52:46 -0400
+Subject: [PATCH 2068/2940] drm/amd/display: add some math functions for
+ dcn_calc_math
+
+Implement floor, ceil, and fabs
+
+Signed-off-by: Charlene Liu <charlene.liu@amd.com>
+Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
+Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+---
+ .../drm/amd/display/dc/calcs/dcn_calc_math.c  | 20 +++++++++++++++++++
+ .../drm/amd/display/dc/calcs/dcn_calc_math.h  |  3 +++
+ .../drm/amd/display/dc/dml/dml_inline_defs.h  |  8 ++++++++
+ 3 files changed, 31 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c
+index 7600a4a4abc7..07d18e78de49 100644
+--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c
++++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c
+@@ -73,6 +73,17 @@ float dcn_bw_floor2(const float arg, const float significance)
+ 		return 0;
+ 	return ((int) (arg / significance)) * significance;
+ }
++float dcn_bw_floor(const float arg)
++{
++	return ((int) (arg));
++}
++
++float dcn_bw_ceil(const float arg)
++{
++	float flr = dcn_bw_floor2(arg, 1);
++
++	return flr + 0.00001 >= arg ? arg : flr + 1;
++}
+ 
+ float dcn_bw_ceil2(const float arg, const float significance)
+ {
+@@ -109,6 +120,15 @@ float dcn_bw_pow(float a, float exp)
+ 	}
+ }
+ 
++double dcn_bw_fabs(double a)
++{
++	if (a > 0)
++		return (a);
++	else
++		return (-a);
++}
++
++
+ float dcn_bw_log(float a, float b)
+ {
+ 	int * const exp_ptr = (int *)(&a);
+diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.h b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.h
+index f46ab0e24ca1..45a07eeffbb6 100644
+--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.h
++++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.h
+@@ -31,10 +31,13 @@ float dcn_bw_min2(const float arg1, const float arg2);
+ unsigned int dcn_bw_max(const unsigned int arg1, const unsigned int arg2);
+ float dcn_bw_max2(const float arg1, const float arg2);
+ float dcn_bw_floor2(const float arg, const float significance);
++float dcn_bw_floor(const float arg);
+ float dcn_bw_ceil2(const float arg, const float significance);
++float dcn_bw_ceil(const float arg);
+ float dcn_bw_max3(float v1, float v2, float v3);
+ float dcn_bw_max5(float v1, float v2, float v3, float v4, float v5);
+ float dcn_bw_pow(float a, float exp);
+ float dcn_bw_log(float a, float b);
++double dcn_bw_fabs(double a);
+ 
+ #endif /* _DCN_CALC_MATH_H_ */
+diff --git a/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h b/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h
+index e8ce08567cd8..eca140da13d8 100644
+--- a/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h
++++ b/drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h
+@@ -129,4 +129,12 @@ static inline unsigned int dml_round_to_multiple(unsigned int num,
+ 	else
+ 		return (num - remainder);
+ }
++static inline double dml_abs(double a)
++{
++	if (a > 0)
++		return a;
++	else
++		return (a*(-1));
++}
++
+ #endif
+-- 
+2.17.1
+