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Commit 21b21560 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm: Improve drm_calc_timestamping_constants() documentation 



Move the long blurp to into the body of the comment, leaving only
a short summary line at the top.

Reviewed-by: default avatar <mario.kleiner.de@gmail.com>
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
parent c326c0a9

drivers/gpu/drm/drm_irq.c

+6 −7
Original line number Diff line number Diff line
@@ -436,17 +436,16 @@ int drm_control(struct drm_device *dev, void *data, 
}



/**

 * drm_calc_timestamping_constants - 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.

 * drm_calc_timestamping_constants - Calculate vblank timestamp constants

 *

 * @crtc drm_crtc whose timestamp constants should be updated.

 * @mode display mode containing the scanout timings

 *

 * 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.

 */

void drm_calc_timestamping_constants(struct drm_crtc *crtc,

				     const struct drm_display_mode *mode)