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Lines Matching defs:wf

19 static void rpm_get(struct intel_wakeref *wf)
21 	wf->wakeref = intel_runtime_pm_get(wf->rpm);
24 static void rpm_put(struct intel_wakeref *wf)
26 	intel_wakeref_t wakeref = fetch_and_zero(&wf->wakeref);
28 	intel_runtime_pm_put(wf->rpm, wakeref);
31 	DRM_WAKEUP_ALL(&wf->wq, &wf->mutex);
34 int __intel_wakeref_get_first(struct intel_wakeref *wf)
42 	mutex_lock_nested(&wf->mutex, SINGLE_DEPTH_NESTING);
43 	if (!atomic_read(&wf->count)) {
46 		rpm_get(wf);
48 		err = wf->ops->get(wf);
50 			rpm_put(wf);
51 			mutex_unlock(&wf->mutex);
55 		smp_mb__before_atomic(); /* release wf->count */
57 	atomic_inc(&wf->count);
58 	mutex_unlock(&wf->mutex);
60 	INTEL_WAKEREF_BUG_ON(atomic_read(&wf->count) <= 0);
64 static void ____intel_wakeref_put_last(struct intel_wakeref *wf)
66 	INTEL_WAKEREF_BUG_ON(atomic_read(&wf->count) <= 0);
67 	if (unlikely(!atomic_dec_and_test(&wf->count))) {
68 		mutex_unlock(&wf->mutex);
73 	if (likely(!wf->ops->put(wf))) {
74 		rpm_put(wf);
77 	mutex_unlock(&wf->mutex);
80 void __intel_wakeref_put_last(struct intel_wakeref *wf, unsigned long flags)
82 	INTEL_WAKEREF_BUG_ON(work_pending(&wf->work));
85 	if (flags & INTEL_WAKEREF_PUT_ASYNC || !mutex_trylock(&wf->mutex)) {
86 		schedule_work(&wf->work);
90 	____intel_wakeref_put_last(wf);
95 	struct intel_wakeref *wf = container_of(wrk, typeof(*wf), work);
97 	if (atomic_add_unless(&wf->count, -1, 1))
100 	mutex_lock(&wf->mutex);
101 	____intel_wakeref_put_last(wf);
104 void __intel_wakeref_init(struct intel_wakeref *wf,
109 	wf->rpm = rpm;
110 	wf->ops = ops;
112 	__mutex_init(&wf->mutex, "wakeref.mutex", &key->mutex);
113 	atomic_set(&wf->count, 0);
114 	wf->wakeref = 0;
115 	DRM_INIT_WAITQUEUE(&wf->wq, "i915wake");
117 	INIT_WORK(&wf->work, __intel_wakeref_put_work);
118 	lockdep_init_map(&wf->work.lockdep_map, "wakeref.work", &key->work, 0);
122 intel_wakeref_fini(struct intel_wakeref *wf)
125 	DRM_DESTROY_WAITQUEUE(&wf->wq);
126 	mutex_destroy(&wf->mutex);
129 int intel_wakeref_wait_for_idle(struct intel_wakeref *wf)
135 	mutex_lock(&wf->mutex);
136 	DRM_WAIT_UNTIL(err, &wf->wq, &wf->mutex, !intel_wakeref_is_active(wf));
137 	mutex_unlock(&wf->mutex);
141 	intel_wakeref_unlock_wait(wf);
147 	struct intel_wakeref_auto *wf = from_timer(wf, t, timer);
151 	if (!refcount_dec_and_lock_irqsave(&wf->count, &wf->lock, &flags))
154 	wakeref = fetch_and_zero(&wf->wakeref);
155 	spin_unlock_irqrestore(&wf->lock, flags);
157 	intel_runtime_pm_put(wf->rpm, wakeref);
160 void intel_wakeref_auto_init(struct intel_wakeref_auto *wf,
163 	spin_lock_init(&wf->lock);
164 	timer_setup(&wf->timer, wakeref_auto_timeout, 0);
165 	refcount_set(&wf->count, 0);
166 	wf->wakeref = 0;
167 	wf->rpm = rpm;
170 void intel_wakeref_auto(struct intel_wakeref_auto *wf, unsigned long timeout)
175 		if (del_timer_sync(&wf->timer))
176 			wakeref_auto_timeout(&wf->timer);
181 	assert_rpm_wakelock_held(wf->rpm);
183 	if (!refcount_inc_not_zero(&wf->count)) {
184 		spin_lock_irqsave(&wf->lock, flags);
185 		if (!refcount_inc_not_zero(&wf->count)) {
186 			INTEL_WAKEREF_BUG_ON(wf->wakeref);
187 			wf->wakeref = intel_runtime_pm_get_if_in_use(wf->rpm);
188 			refcount_set(&wf->count, 1);
190 		spin_unlock_irqrestore(&wf->lock, flags);
196 	 * elided callback to keep the wf->count balanced.
198 	if (mod_timer(&wf->timer, jiffies + timeout))
199 		wakeref_auto_timeout(&wf->timer);
202 void intel_wakeref_auto_fini(struct intel_wakeref_auto *wf)
204 	intel_wakeref_auto(wf, 0);
205 	INTEL_WAKEREF_BUG_ON(wf->wakeref);
206 	spin_lock_destroy(&wf->lock);