Name
drm_calc_timestamping_constants —
calculate vblank timestamp constants
Synopsis
void drm_calc_timestamping_constants ( | struct drm_crtc * crtc, |
| | const struct drm_display_mode * mode); |
Arguments
crtc
drm_crtc whose timestamp constants should be updated.
mode
display mode containing the scanout timings
Description
Calculate and store various constants which are later
needed by vblank and swap-completion timestamping, e.g,
by drm_calc_vbltimestamp_from_scanoutpos. They are
derived from CRTC's true scanout timing, so they take
things like panel scaling or other adjustments into account.