62  * @hwlock: an hwspinlock which we want to trylock
91 int __hwspin_trylock(struct hwspinlock *hwlock, int mode, unsigned long *flags)  in __hwspin_trylock()  argument
95 	if (WARN_ON(!hwlock || (!flags && mode == HWLOCK_IRQSTATE)))  in __hwspin_trylock()
113 		ret = spin_trylock_irqsave(&hwlock->lock, *flags);  in __hwspin_trylock()
116 		ret = spin_trylock_irq(&hwlock->lock);  in __hwspin_trylock()
123 		ret = spin_trylock(&hwlock->lock);  in __hwspin_trylock()
132 	ret = hwlock->bank->ops->trylock(hwlock);  in __hwspin_trylock()
134 	/* if hwlock is already taken, undo spin_trylock_* and exit */  in __hwspin_trylock()
138 			spin_unlock_irqrestore(&hwlock->lock, *flags);  in __hwspin_trylock()
141 			spin_unlock_irq(&hwlock->lock);  in __hwspin_trylock()
148 			spin_unlock(&hwlock->lock);  in __hwspin_trylock()
173  * @hwlock: the hwspinlock to be locked
179  * This function locks the given @hwlock. If the @hwlock
202  * Returns 0 when the @hwlock was successfully taken, and an appropriate
203  * error code otherwise (most notably -ETIMEDOUT if the @hwlock is still
206 int __hwspin_lock_timeout(struct hwspinlock *hwlock, unsigned int to,  in __hwspin_lock_timeout()  argument
216 		ret = __hwspin_trylock(hwlock, mode, flags);  in __hwspin_lock_timeout()
238 		if (hwlock->bank->ops->relax)  in __hwspin_lock_timeout()
239 			hwlock->bank->ops->relax(hwlock);  in __hwspin_lock_timeout()
248  * @hwlock: a previously-acquired hwspinlock which we want to unlock
254  * @hwlock must be already locked before calling this function: it is a bug
255  * to call unlock on a @hwlock that is already unlocked.
265 void __hwspin_unlock(struct hwspinlock *hwlock, int mode, unsigned long *flags)  in __hwspin_unlock()  argument
267 	if (WARN_ON(!hwlock || (!flags && mode == HWLOCK_IRQSTATE)))  in __hwspin_unlock()
284 	hwlock->bank->ops->unlock(hwlock);  in __hwspin_unlock()
289 		spin_unlock_irqrestore(&hwlock->lock, *flags);  in __hwspin_unlock()
292 		spin_unlock_irq(&hwlock->lock);  in __hwspin_unlock()
299 		spin_unlock(&hwlock->lock);  in __hwspin_unlock()
308  * @hwlock_spec: hwlock specifier as found in the device tree
327  * @np: device node from which to request the specific hwlock
328  * @index: index of the hwlock in the list of values
342 	struct hwspinlock *hwlock;  in of_hwspin_lock_get_id()  local
348 	ret = of_parse_phandle_with_args(np, "hwlocks", "#hwlock-cells", index,  in of_hwspin_lock_get_id()
362 		hwlock = radix_tree_deref_slot(slot);  in of_hwspin_lock_get_id()
363 		if (unlikely(!hwlock))  in of_hwspin_lock_get_id()
365 		if (radix_tree_deref_retry(hwlock)) {  in of_hwspin_lock_get_id()
370 		if (hwlock->bank->dev->of_node == args.np) {  in of_hwspin_lock_get_id()
380 	if (id < 0 || id >= hwlock->bank->num_locks) {  in of_hwspin_lock_get_id()
384 	id += hwlock->bank->base_id;  in of_hwspin_lock_get_id()
393  * of_hwspin_lock_get_id_byname() - get lock id for an specified hwlock name
394  * @np: device node from which to request the specific hwlock
395  * @name: hwlock name
413 	index = of_property_match_string(np, "hwlock-names", name);  in of_hwspin_lock_get_id_byname()
421 static int hwspin_lock_register_single(struct hwspinlock *hwlock, int id)  in hwspin_lock_register_single()  argument
428 	ret = radix_tree_insert(&hwspinlock_tree, id, hwlock);  in hwspin_lock_register_single()
439 	WARN_ON(tmp != hwlock);  in hwspin_lock_register_single()
448 	struct hwspinlock *hwlock = NULL;  in hwspin_lock_unregister_single()  local
460 	hwlock = radix_tree_delete(&hwspinlock_tree, id);  in hwspin_lock_unregister_single()
461 	if (!hwlock) {  in hwspin_lock_unregister_single()
468 	return hwlock;  in hwspin_lock_unregister_single()
489 	struct hwspinlock *hwlock;  in hwspin_lock_register()  local
504 		hwlock = &bank->lock[i];  in hwspin_lock_register()
506 		spin_lock_init(&hwlock->lock);  in hwspin_lock_register()
507 		hwlock->bank = bank;  in hwspin_lock_register()
509 		ret = hwspin_lock_register_single(hwlock, base_id + i);  in hwspin_lock_register()
536 	struct hwspinlock *hwlock, *tmp;  in hwspin_lock_unregister()  local
540 		hwlock = &bank->lock[i];  in hwspin_lock_unregister()
547 		WARN_ON(tmp != hwlock);  in hwspin_lock_unregister()
646 static int __hwspin_lock_request(struct hwspinlock *hwlock)  in __hwspin_lock_request()  argument
648 	struct device *dev = hwlock->bank->dev;  in __hwspin_lock_request()
670 	tmp = radix_tree_tag_clear(&hwspinlock_tree, hwlock_to_id(hwlock),  in __hwspin_lock_request()
674 	WARN_ON(tmp != hwlock);  in __hwspin_lock_request()
681  * @hwlock: a valid hwspinlock instance
683  * Returns the id number of a given @hwlock, or -EINVAL if @hwlock is invalid.
685 int hwspin_lock_get_id(struct hwspinlock *hwlock)  in hwspin_lock_get_id()  argument
687 	if (!hwlock) {  in hwspin_lock_get_id()
688 		pr_err("invalid hwlock\n");  in hwspin_lock_get_id()
692 	return hwlock_to_id(hwlock);  in hwspin_lock_get_id()
703  * id of a given hwlock, use hwspin_lock_get_id()).
711 	struct hwspinlock *hwlock;  in hwspin_lock_request()  local
717 	ret = radix_tree_gang_lookup_tag(&hwspinlock_tree, (void **)&hwlock,  in hwspin_lock_request()
721 		hwlock = NULL;  in hwspin_lock_request()
729 	ret = __hwspin_lock_request(hwlock);  in hwspin_lock_request()
731 		hwlock = NULL;  in hwspin_lock_request()
735 	return hwlock;  in hwspin_lock_request()
754 	struct hwspinlock *hwlock;  in hwspin_lock_request_specific()  local
760 	hwlock = radix_tree_lookup(&hwspinlock_tree, id);  in hwspin_lock_request_specific()
761 	if (!hwlock) {  in hwspin_lock_request_specific()
767 	WARN_ON(hwlock_to_id(hwlock) != id);  in hwspin_lock_request_specific()
773 		hwlock = NULL;  in hwspin_lock_request_specific()
778 	ret = __hwspin_lock_request(hwlock);  in hwspin_lock_request_specific()
780 		hwlock = NULL;  in hwspin_lock_request_specific()
784 	return hwlock;  in hwspin_lock_request_specific()
790  * @hwlock: the specific hwspinlock to free
792  * This function mark @hwlock as free again.
793  * Should only be called with an @hwlock that was retrieved from
800 int hwspin_lock_free(struct hwspinlock *hwlock)  in hwspin_lock_free()  argument
806 	if (!hwlock) {  in hwspin_lock_free()
807 		pr_err("invalid hwlock\n");  in hwspin_lock_free()
811 	dev = hwlock->bank->dev;  in hwspin_lock_free()
815 	ret = radix_tree_tag_get(&hwspinlock_tree, hwlock_to_id(hwlock),  in hwspin_lock_free()
818 		dev_err(dev, "%s: hwlock is already free\n", __func__);  in hwspin_lock_free()
828 	tmp = radix_tree_tag_set(&hwspinlock_tree, hwlock_to_id(hwlock),  in hwspin_lock_free()
832 	WARN_ON(tmp != hwlock);  in hwspin_lock_free()
844 	struct hwspinlock **hwlock = res;  in devm_hwspin_lock_match()  local
846 	if (WARN_ON(!hwlock || !*hwlock))  in devm_hwspin_lock_match()
849 	return *hwlock == data;  in devm_hwspin_lock_match()
860  * @hwlock: the specific hwspinlock to free
862  * This function mark @hwlock as free again.
863  * Should only be called with an @hwlock that was retrieved from
870 int devm_hwspin_lock_free(struct device *dev, struct hwspinlock *hwlock)  in devm_hwspin_lock_free()  argument
875 			     devm_hwspin_lock_match, hwlock);  in devm_hwspin_lock_free()
890  * id of a given hwlock, use hwspin_lock_get_id()).
898 	struct hwspinlock **ptr, *hwlock;  in devm_hwspin_lock_request()  local
904 	hwlock = hwspin_lock_request();  in devm_hwspin_lock_request()
905 	if (hwlock) {  in devm_hwspin_lock_request()
906 		*ptr = hwlock;  in devm_hwspin_lock_request()
912 	return hwlock;  in devm_hwspin_lock_request()
934 	struct hwspinlock **ptr, *hwlock;  in devm_hwspin_lock_request_specific()  local
940 	hwlock = hwspin_lock_request_specific(id);  in devm_hwspin_lock_request_specific()
941 	if (hwlock) {  in devm_hwspin_lock_request_specific()
942 		*ptr = hwlock;  in devm_hwspin_lock_request_specific()
948 	return hwlock;  in devm_hwspin_lock_request_specific()