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| author | Harry Wentland | 2017-11-29 16:28:29 +0100 |
|---|---|---|
| committer | Alex Deucher | 2017-12-14 16:55:02 +0100 |
| commit | a018298ff850effd3a8494c839449150aef0934a (patch) | |
| tree | bffd11fbe5066be0eb151b0f77cb1a6d63c5734b /drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c | |
| parent | drm/amd/display: Use macro for isnan check (diff) | |
| download | kernel-qcow2-linux-a018298ff850effd3a8494c839449150aef0934a.tar.gz kernel-qcow2-linux-a018298ff850effd3a8494c839449150aef0934a.tar.xz kernel-qcow2-linux-a018298ff850effd3a8494c839449150aef0934a.zip | |
drm/amd/display: Add disclaimer to BW and DML code provided by HW
This code can sometimes look troubling but we trust it as it comes from
HW teams with a guarantee of correctness. Add a note to these files to
explain this.
v2: thing -> things
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@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 | 9 |
1 files changed, 9 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 ae38cdb80915..7600a4a4abc7 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 @@ -27,6 +27,15 @@ #define isNaN(number) ((number) != (number)) +/* + * NOTE: + * This file is gcc-parseable HW gospel, coming straight from HW engineers. + * + * It doesn't adhere to Linux kernel style and sometimes will do things in odd + * ways. Unless there is something clearly wrong with it the code should + * remain as-is as it provides us with a guarantee from HW that it is correct. + */ + float dcn_bw_mod(const float arg1, const float arg2) { if (isNaN(arg1)) |