diff options
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 0659d9956b7c..7bdf247b9681 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -1798,3 +1798,20 @@ bool drm_crtc_handle_vblank(struct drm_crtc *crtc) return drm_handle_vblank(crtc->dev, drm_crtc_index(crtc)); } EXPORT_SYMBOL(drm_crtc_handle_vblank); + +/** + * drm_vblank_no_hw_counter - "No hw counter" implementation of .get_vblank_counter() + * @dev: DRM device + * @pipe: CRTC for which to read the counter + * + * Drivers can plug this into the .get_vblank_counter() function if + * there is no useable hardware frame counter available. + * + * Returns: + * 0 + */ +u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe) +{ + return 0; +} +EXPORT_SYMBOL(drm_vblank_no_hw_counter); |