drivers/dca/dca-core.c

13 #include <linux/dca.h>
79 	struct dca_provider *dca, *_dca;
99 	list_for_each_entry_safe(dca, _dca, &domain->dca_providers, node)
100 		list_move(&dca->node, &unregistered_providers);
106 	list_for_each_entry_safe(dca, _dca, &unregistered_providers, node) {
107 		dca_sysfs_remove_provider(dca);
108 		list_del(&dca->node);
141 	struct dca_provider *dca;
159 	list_for_each_entry(dca, &domain->dca_providers, node)
160 		if ((!dev) || (dca->ops->dev_managed(dca, dev)))
161 			return dca;
167  * dca_add_requester - add a dca client to the list
168  * @dev - the device that wants dca service
172 	struct dca_provider *dca;
184 	dca = dca_find_provider_by_dev(dev);
185 	if (dca) {
197 	list_for_each_entry(dca, &domain->dca_providers, node) {
198 		slot = dca->ops->add_requester(dca, dev);
208 	err = dca_sysfs_add_req(dca, dev, slot);
211 		if (dca == dca_find_provider_by_dev(dev))
212 			dca->ops->remove_requester(dca, dev);
222  * dca_remove_requester - remove a dca client from the list
223  * @dev - the device that wants dca service
227 	struct dca_provider *dca;
235 	dca = dca_find_provider_by_dev(dev);
236 	if (!dca) {
240 	slot = dca->ops->remove_requester(dca, dev);
246 	dca_sysfs_remove_req(dca, slot);
253  * dca_common_get_tag - return the dca tag (serves both new and old api)
254  * @dev - the device that wants dca service
259 	struct dca_provider *dca;
265 	dca = dca_find_provider_by_dev(dev);
266 	if (!dca) {
270 	tag = dca->ops->get_tag(dca, dev, cpu);
277  * dca3_get_tag - return the dca tag to the requester device
279  * @dev - the device that wants dca service
292  * dca_get_tag - return the dca tag for the given cpu (old api)
302  * alloc_dca_provider - get data struct for describing a dca provider
303  * @ops - pointer to struct of dca operation function pointers
309 	struct dca_provider *dca;
312 	alloc_size = (sizeof(*dca) + priv_size);
313 	dca = kzalloc(alloc_size, GFP_KERNEL);
314 	if (!dca)
316 	dca->ops = ops;
318 	return dca;
323  * free_dca_provider - release the dca provider data struct
324  * @ops - pointer to struct of dca operation function pointers
327 void free_dca_provider(struct dca_provider *dca)
329 	kfree(dca);
334  * register_dca_provider - register a dca provider
335  * @dca - struct created by alloc_dca_provider()
336  * @dev - device providing dca services
338 int register_dca_provider(struct dca_provider *dca, struct device *dev)
351 	err = dca_sysfs_add_provider(dca, dev);
362 			dca_sysfs_remove_provider(dca);
381 	list_add(&dca->node, &domain->dca_providers);
392  * unregister_dca_provider - remove a dca provider
393  * @dca - struct created by alloc_dca_provider()
395 void unregister_dca_provider(struct dca_provider *dca, struct device *dev)
411 	list_del(&dca->node);
420 	dca_sysfs_remove_provider(dca);
444 	pr_info("dca service started, version %s\n", DCA_VERSION);