| 1 |
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| 2 |
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| 3 | #ifndef _DRM_VBLANK_WORK_H_
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| 4 | #define _DRM_VBLANK_WORK_H_
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| 5 |
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| 6 | #include <linux/kthread.h>
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| 7 |
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| 8 | struct drm_crtc;
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| 9 |
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| 10 | |
| 11 | * struct drm_vblank_work - A delayed work item which delays until a target
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| 12 | * vblank passes, and then executes at realtime priority outside of IRQ
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| 13 | * context.
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| 14 | *
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| 15 | * See also:
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| 16 | * drm_vblank_work_schedule()
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| 17 | * drm_vblank_work_init()
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| 18 | * drm_vblank_work_cancel_sync()
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| 19 | * drm_vblank_work_flush()
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| 20 | * drm_vblank_work_flush_all()
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| 21 |
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| 22 | struct drm_vblank_work {
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| 23 | |
| 24 | * @base: The base &kthread_work item which will be executed by
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| 25 | * &drm_vblank_crtc.worker. Drivers should not interact with this
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| 26 | * directly, and instead rely on drm_vblank_work_init() to initialize
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| 27 | * this.
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| 28 |
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| 29 | struct kthread_work base;
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| 30 |
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| 31 | |
| 32 | * @vblank: A pointer to &drm_vblank_crtc this work item belongs to.
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| 33 |
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| 34 | struct drm_vblank_crtc *vblank;
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| 35 |
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| 36 | |
| 37 | * @count: The target vblank this work will execute on. Drivers should
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| 38 | * not modify this value directly, and instead use
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| 39 | * drm_vblank_work_schedule()
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| 40 |
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| 41 | u64 count;
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| 42 |
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| 43 | |
| 44 | * @cancelling: The number of drm_vblank_work_cancel_sync() calls that
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| 45 | * are currently running. A work item cannot be rescheduled until all
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| 46 | * calls have finished.
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| 47 |
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| 48 | int cancelling;
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| 49 |
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| 50 | |
| 51 | * @node: The position of this work item in
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| 52 | * &drm_vblank_crtc.pending_work.
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| 53 |
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| 54 | struct list_head node;
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| 55 | };
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| 56 |
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| 57 | |
| 58 | * to_drm_vblank_work - Retrieve the respective &drm_vblank_work item from a
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| 59 | * &kthread_work
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| 60 | * @_work: The &kthread_work embedded inside a &drm_vblank_work
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| 61 |
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| 62 | #define to_drm_vblank_work(_work) \
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| 63 | container_of((_work), struct drm_vblank_work, base)
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| 64 |
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| 65 | int drm_vblank_work_schedule(struct drm_vblank_work *work,
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| 66 | u64 count, bool nextonmiss);
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| 67 | void drm_vblank_work_init(struct drm_vblank_work *work, struct drm_crtc *crtc,
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| 68 | void (*func)(struct kthread_work *work));
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| 69 | bool drm_vblank_work_cancel_sync(struct drm_vblank_work *work);
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| 70 | void drm_vblank_work_flush(struct drm_vblank_work *work);
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| 71 | void drm_vblank_work_flush_all(struct drm_crtc *crtc);
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| 72 |
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| 73 | #endif
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