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24 #ifndef DRM_FLIP_WORK_H
25 #define DRM_FLIP_WORK_H
27 #include <linux/kfifo.h>
28 #include <linux/spinlock.h>
29 #include <linux/workqueue.h>
34 * Util to queue up work to run from work-queue context after flip/vblank.
35 * Typically this can be used to defer unref of framebuffer's, cursor
36 * bo's, etc until after vblank. The APIs are all thread-safe.
37 * Moreover, drm_flip_work_queue_task and drm_flip_work_queue can be called
44 * drm_flip_func_t - callback function
46 * @work: the flip work
47 * @val: value queued via drm_flip_work_queue()
49 * Callback function to be called for each of the queue'd work items after
50 * drm_flip_work_commit() is called.
52 typedef void (*drm_flip_func_t)(struct drm_flip_work *work, void *val);
55 * struct drm_flip_task - flip work task
56 * @node: list entry element
57 * @data: data to pass to &drm_flip_work.func
59 struct drm_flip_task {
60 struct list_head node;
65 * struct drm_flip_work - flip work queue
67 * @func: callback fxn called for each committed item
68 * @worker: worker which calls @func
69 * @queued: queued tasks
70 * @commited: commited tasks
71 * @lock: lock to access queued and commited lists
73 struct drm_flip_work {
76 struct work_struct worker;
77 struct list_head queued;
78 struct list_head commited;
82 struct drm_flip_task *drm_flip_work_allocate_task(void *data, gfp_t flags);
83 void drm_flip_work_queue_task(struct drm_flip_work *work,
84 struct drm_flip_task *task);
85 void drm_flip_work_queue(struct drm_flip_work *work, void *val);
86 void drm_flip_work_commit(struct drm_flip_work *work,
87 struct workqueue_struct *wq);
88 void drm_flip_work_init(struct drm_flip_work *work,
89 const char *name, drm_flip_func_t func);
90 void drm_flip_work_cleanup(struct drm_flip_work *work);
92 #endif /* DRM_FLIP_WORK_H */