drm_vblank_helper.h

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/* SPDX-License-Identifier: GPL-2.0+ */
 
#ifndef _DRM_VBLANK_HELPER_H_
#define _DRM_VBLANK_HELPER_H_
 
#include <linux/hrtimer_types.h>
#include <linux/types.h>
 
struct drm_atomic_commit;
struct drm_crtc;
 
/*
 * VBLANK helpers
 */
 
void drm_crtc_vblank_atomic_flush(struct drm_crtc *crtc,
                  struct drm_atomic_commit *state);
void drm_crtc_vblank_atomic_enable(struct drm_crtc *crtc,
                   struct drm_atomic_commit *state);
void drm_crtc_vblank_atomic_disable(struct drm_crtc *crtc,
                    struct drm_atomic_commit *crtc_state);
 
#define DRM_CRTC_HELPER_VBLANK_FUNCS \
    .atomic_flush = drm_crtc_vblank_atomic_flush, \
    .atomic_enable = drm_crtc_vblank_atomic_enable, \
    .atomic_disable = drm_crtc_vblank_atomic_disable
 
/*
 * VBLANK timer
 */
 
int drm_crtc_vblank_helper_enable_vblank_timer(struct drm_crtc *crtc);
void drm_crtc_vblank_helper_disable_vblank_timer(struct drm_crtc *crtc);
bool drm_crtc_vblank_helper_get_vblank_timestamp_from_timer(struct drm_crtc *crtc,
                                int *max_error,
                                ktime_t *vblank_time,
                                bool in_vblank_irq);
 
#define DRM_CRTC_VBLANK_TIMER_FUNCS \
    .enable_vblank = drm_crtc_vblank_helper_enable_vblank_timer, \
    .disable_vblank = drm_crtc_vblank_helper_disable_vblank_timer, \
    .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp_from_timer
 
#endif