This constructs a fixed 16.16 rational, useful to specify the minimum and maximum scaling in drm_atomic_helper_check_plane_state. It is open-coded as a macro in multiple drivers, so let's share the helper. Signed-off-by: Alyssa Rosenzweig <alyssa@xxxxxxxxxxxxx> --- include/drm/drm_fixed.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index 553210c02ee0..df1f369b4918 100644 --- a/include/drm/drm_fixed.h +++ b/include/drm/drm_fixed.h @@ -208,4 +208,9 @@ static inline s64 drm_fixp_exp(s64 x) return sum; } +static inline int drm_fixed_16_16(s32 mult, s32 div) +{ + return (mult << 16) / div; +} + #endif -- 2.30.2