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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
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