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author | Charlene Liu | 2019-05-17 04:52:46 +0200 |
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committer | Alex Deucher | 2019-06-11 19:49:21 +0200 |
commit | 327e4f12104e01b2ebd995178d09438ec6c86858 (patch) | |
tree | 26d62f521671762b9334fda24d2deb02ff7b7b3d /drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c | |
parent | drm/amd/display: Copy stream updates onto streams (diff) | |
download | kernel-qcow2-linux-327e4f12104e01b2ebd995178d09438ec6c86858.tar.gz kernel-qcow2-linux-327e4f12104e01b2ebd995178d09438ec6c86858.tar.xz kernel-qcow2-linux-327e4f12104e01b2ebd995178d09438ec6c86858.zip |
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c | 20 |
1 files changed, 20 insertions, 0 deletions
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); |