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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_state;
struct drm_crtc;
/*
* VBLANK helpers
*/
void drm_crtc_vblank_atomic_flush(struct drm_crtc *crtc,
struct drm_atomic_state *state);
void drm_crtc_vblank_atomic_enable(struct drm_crtc *crtc,
struct drm_atomic_state *state);
void drm_crtc_vblank_atomic_disable(struct drm_crtc *crtc,
struct drm_atomic_state *crtc_state);
/**
* DRM_CRTC_HELPER_VBLANK_FUNCS - Default implementation for VBLANK helpers
*
* This macro initializes struct &drm_crtc_helper_funcs to default helpers
* for VBLANK handling.
*/
#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);
/**
* DRM_CRTC_VBLANK_TIMER_FUNCS - Default implementation for VBLANK timers
*
* This macro initializes struct &drm_crtc_funcs to default helpers for
* VBLANK timers.
*/
#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
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