#ifndef _DRM_IRQ_H_
#define _DRM_IRQ_H_
-#include <linux/seqlock.h>
-
-/**
- * struct drm_pending_vblank_event - pending vblank event tracking
- */
-struct drm_pending_vblank_event {
- /**
- * @base: Base structure for tracking pending DRM events.
- */
- struct drm_pending_event base;
- /**
- * @pipe: drm_crtc_index() of the &drm_crtc this event is for.
- */
- unsigned int pipe;
- /**
- * @event: Actual event which will be sent to userspace.
- */
- struct drm_event_vblank event;
-};
-
-/**
- * struct drm_vblank_crtc - vblank tracking for a CRTC
- *
- * This structure tracks the vblank state for one CRTC.
- *
- * Note that for historical reasons - the vblank handling code is still shared
- * with legacy/non-kms drivers - this is a free-standing structure not directly
- * connected to &struct drm_crtc. But all public interface functions are taking
- * a &struct drm_crtc to hide this implementation detail.
- */
-struct drm_vblank_crtc {
- /**
- * @dev: Pointer to the &drm_device.
- */
- struct drm_device *dev;
- /**
- * @queue: Wait queue for vblank waiters.
- */
- wait_queue_head_t queue; /**< VBLANK wait queue */
- /**
- * @disable_timer: Disable timer for the delayed vblank disabling
- * hysteresis logic. Vblank disabling is controlled through the
- * drm_vblank_offdelay module option and the setting of the
- * &drm_device.max_vblank_count value.
- */
- struct timer_list disable_timer;
-
- /**
- * @seqlock: Protect vblank count and time.
- */
- seqlock_t seqlock; /* protects vblank count and time */
-
- /**
- * @count: Current software vblank counter.
- */
- u32 count;
- /**
- * @time: Vblank timestamp corresponding to @count.
- */
- struct timeval time;
-
- /**
- * @refcount: Number of users/waiters of the vblank interrupt. Only when
- * this refcount reaches 0 can the hardware interrupt be disabled using
- * @disable_timer.
- */
- atomic_t refcount; /* number of users of vblank interruptsper crtc */
- /**
- * @last: Protected by &drm_device.vbl_lock, used for wraparound handling.
- */
- u32 last;
- /**
- * @inmodeset: Tracks whether the vblank is disabled due to a modeset.
- * For legacy driver bit 2 additionally tracks whether an additional
- * temporary vblank reference has been acquired to paper over the
- * hardware counter resetting/jumping. KMS drivers should instead just
- * call drm_crtc_vblank_off() and drm_crtc_vblank_on(), which explicitly
- * save and restore the vblank count.
- */
- unsigned int inmodeset; /* Display driver is setting mode */
- /**
- * @pipe: drm_crtc_index() of the &drm_crtc corresponding to this
- * structure.
- */
- unsigned int pipe;
- /**
- * @framedur_ns: Frame/Field duration in ns, used by
- * drm_calc_vbltimestamp_from_scanoutpos() and computed by
- * drm_calc_timestamping_constants().
- */
- int framedur_ns;
- /**
- * @linedur_ns: Line duration in ns, used by
- * drm_calc_vbltimestamp_from_scanoutpos() and computed by
- * drm_calc_timestamping_constants().
- */
- int linedur_ns;
- /**
- * @enabled: Tracks the enabling state of the corresponding &drm_crtc to
- * avoid double-disabling and hence corrupting saved state. Needed by
- * drivers not using atomic KMS, since those might go through their CRTC
- * disabling functions multiple times.
- */
- bool enabled;
-};
+struct drm_device;
int drm_irq_install(struct drm_device *dev, int irq);
int drm_irq_uninstall(struct drm_device *dev);
-int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs);
-u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
-u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc,
- struct timeval *vblanktime);
-void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
- struct drm_pending_vblank_event *e);
-void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
- struct drm_pending_vblank_event *e);
-bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
-bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
-int drm_crtc_vblank_get(struct drm_crtc *crtc);
-void drm_crtc_vblank_put(struct drm_crtc *crtc);
-void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe);
-void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
-void drm_crtc_vblank_off(struct drm_crtc *crtc);
-void drm_crtc_vblank_reset(struct drm_crtc *crtc);
-void drm_crtc_vblank_on(struct drm_crtc *crtc);
-void drm_vblank_cleanup(struct drm_device *dev);
-u32 drm_accurate_vblank_count(struct drm_crtc *crtc);
-
-int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
- unsigned int pipe, int *max_error,
- struct timeval *vblank_time,
- unsigned flags,
- const struct drm_display_mode *mode);
-void drm_calc_timestamping_constants(struct drm_crtc *crtc,
- const struct drm_display_mode *mode);
-
-/**
- * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
- * @crtc: which CRTC's vblank waitqueue to retrieve
- *
- * This function returns a pointer to the vblank waitqueue for the CRTC.
- * Drivers can use this to implement vblank waits using wait_event() and related
- * functions.
- */
-static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
-{
- return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
-}
-
#endif
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