other versions
- jessie 3.16.56-1+deb8u1
DRM_CALC_TIMESTAMPIN(9) | DRM Core | DRM_CALC_TIMESTAMPIN(9) |
NAME¶
drm_calc_timestamping_constants - calculate vblank timestamp constantsSYNOPSIS¶
void
drm_calc_timestamping_constants(struct drm_crtc * crtc,
const struct drm_display_mode * mode);
ARGUMENTS¶
crtcdrm_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.AUTHORS¶
Jesse Barnes <jesse.barnes@intel.com>Initial version
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Driver internals
Daniel Vetter <daniel.vetter@ffwll.ch>
Contributions all over the place
COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |