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Diffstat (limited to 'include/drm/drm_device.h')
| -rw-r--r-- | include/drm/drm_device.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index a6f8e5abb66f..d5e092dccf3e 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -240,6 +240,12 @@ struct drm_device { * races and imprecision over longer time periods, hence exposing a * hardware vblank counter is always recommended. * + * This is the statically configured device wide maximum. The driver + * can instead choose to use a runtime configurable per-crtc value + * &drm_vblank_crtc.max_vblank_count, in which case @max_vblank_count + * must be left at zero. See drm_crtc_set_max_vblank_count() on how + * to use the per-crtc value. + * * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set. */ u32 max_vblank_count; |