7  * subsystem, and only handles one master device, but this doesn't have to be
61 struct master {  struct
73 	struct master *master;  argument
91 	struct master *m = s->private;  in component_devices_show()
96 	seq_printf(s, "%-40s %20s\n", "master name", "status");  in component_devices_show()
126 static void component_master_debugfs_add(struct master *m)  in component_master_debugfs_add()
133 static void component_master_debugfs_del(struct master *m)  in component_master_debugfs_del()
141 static void component_master_debugfs_add(struct master *m)  in component_master_debugfs_add()
144 static void component_master_debugfs_del(struct master *m)  in component_master_debugfs_del()
149 static struct master *__master_find(struct device *dev,  in __master_find()
152 	struct master *m;  in __master_find()
161 static struct component *find_component(struct master *master,  in find_component()  argument
167 		if (c->master && c->master != master)  in find_component()
181 static int find_components(struct master *master)  in find_components()  argument
183 	struct component_match *match = master->match;  in find_components()
189 	 * any components which are found to this master.  in find_components()
195 		dev_dbg(master->dev, "Looking for component %zu\n", i);  in find_components()
200 		c = find_component(master, mc);  in find_components()
206 		dev_dbg(master->dev, "found component %s, duplicate %u\n", dev_name(c->dev), !!c->master);  in find_components()
208 		/* Attach this component to the master */  in find_components()
209 		match->compare[i].duplicate = !!c->master;  in find_components()
211 		c->master = master;  in find_components()
216 /* Detach component from associated master */
217 static void remove_component(struct master *master, struct component *c)  in remove_component()  argument
221 	/* Detach the component from this master. */  in remove_component()
222 	for (i = 0; i < master->match->num; i++)  in remove_component()
223 		if (master->match->compare[i].component == c)  in remove_component()
224 			master->match->compare[i].component = NULL;  in remove_component()
228  * Try to bring up a master.  If component is NULL, we're interested in
229  * this master, otherwise it's a component which must be present to try
230  * and bring up the master.
234 static int try_to_bring_up_master(struct master *master,  in try_to_bring_up_master()  argument
239 	dev_dbg(master->dev, "trying to bring up master\n");  in try_to_bring_up_master()
241 	if (find_components(master)) {  in try_to_bring_up_master()
242 		dev_dbg(master->dev, "master has incomplete components\n");  in try_to_bring_up_master()
246 	if (component && component->master != master) {  in try_to_bring_up_master()
247 		dev_dbg(master->dev, "master is not for this component (%s)\n",  in try_to_bring_up_master()
252 	if (!devres_open_group(master->dev, NULL, GFP_KERNEL))  in try_to_bring_up_master()
256 	ret = master->ops->bind(master->dev);  in try_to_bring_up_master()
258 		devres_release_group(master->dev, NULL);  in try_to_bring_up_master()
260 			dev_info(master->dev, "master bind failed: %d\n", ret);  in try_to_bring_up_master()
264 	master->bound = true;  in try_to_bring_up_master()
270 	struct master *m;  in try_to_bring_up_masters()
284 static void take_down_master(struct master *master)  in take_down_master()  argument
286 	if (master->bound) {  in take_down_master()
287 		master->ops->unbind(master->dev);  in take_down_master()
288 		devres_release_group(master->dev, NULL);  in take_down_master()
289 		master->bound = false;  in take_down_master()
293 static void component_match_release(struct device *master,  in component_match_release()  argument
302 			mc->release(master, mc->data);  in component_match_release()
336 static void __component_match_add(struct device *master,  in __component_match_add()  argument
356 		devres_add(master, match);  in __component_match_add()
365 		ret = component_match_realloc(master, match, new_size);  in __component_match_add()
382  * @master: device with the aggregate driver
388  * Adds a new component match to the list stored in @matchptr, which the @master
400 void component_match_add_release(struct device *master,  in component_match_add_release()  argument
405 	__component_match_add(master, matchptr, release, compare, NULL,  in component_match_add_release()
412  * @master: device with the aggregate driver
417  * Adds a new component match to the list stored in @matchptr, which the @master
427 void component_match_add_typed(struct device *master,  in component_match_add_typed()  argument
431 	__component_match_add(master, matchptr, NULL, NULL, compare_typed,  in component_match_add_typed()
436 static void free_master(struct master *master)  in free_master()  argument
438 	struct component_match *match = master->match;  in free_master()
441 	component_master_debugfs_del(master);  in free_master()
442 	list_del(&master->node);  in free_master()
448 				c->master = NULL;  in free_master()
452 	kfree(master);  in free_master()
471 	struct master *master;  in component_master_add_with_match()  local
479 	master = kzalloc(sizeof(*master), GFP_KERNEL);  in component_master_add_with_match()
480 	if (!master)  in component_master_add_with_match()
483 	master->dev = dev;  in component_master_add_with_match()
484 	master->ops = ops;  in component_master_add_with_match()
485 	master->match = match;  in component_master_add_with_match()
487 	component_master_debugfs_add(master);  in component_master_add_with_match()
490 	list_add(&master->node, &masters);  in component_master_add_with_match()
492 	ret = try_to_bring_up_master(master, NULL);  in component_master_add_with_match()
495 		free_master(master);  in component_master_add_with_match()
515 	struct master *master;  in component_master_del()  local
518 	master = __master_find(dev, ops);  in component_master_del()
519 	if (master) {  in component_master_del()
520 		take_down_master(master);  in component_master_del()
521 		free_master(master);  in component_master_del()
528 	struct master *master, void *data)  in component_unbind()  argument
533 		component->ops->unbind(component->dev, master->dev, data);  in component_unbind()
551 	struct master *master;  in component_unbind_all()  local
557 	master = __master_find(master_dev, NULL);  in component_unbind_all()
558 	if (!master)  in component_unbind_all()
562 	for (i = master->match->num; i--; )  in component_unbind_all()
563 		if (!master->match->compare[i].duplicate) {  in component_unbind_all()
564 			c = master->match->compare[i].component;  in component_unbind_all()
565 			component_unbind(c, master, data);  in component_unbind_all()
570 static int component_bind(struct component *component, struct master *master,  in component_bind()  argument
580 	if (!devres_open_group(master->dev, NULL, GFP_KERNEL))  in component_bind()
589 		devres_release_group(master->dev, NULL);  in component_bind()
593 	dev_dbg(master->dev, "binding %s (ops %ps)\n",  in component_bind()
596 	ret = component->ops->bind(component->dev, master->dev, data);  in component_bind()
607 		devres_remove_group(master->dev, NULL);  in component_bind()
609 		dev_info(master->dev, "bound %s (ops %ps)\n",  in component_bind()
613 		devres_release_group(master->dev, NULL);  in component_bind()
616 			dev_err(master->dev, "failed to bind %s (ops %ps): %d\n",  in component_bind()
634 	struct master *master;  in component_bind_all()  local
641 	master = __master_find(master_dev, NULL);  in component_bind_all()
642 	if (!master)  in component_bind_all()
646 	for (i = 0; i < master->match->num; i++)  in component_bind_all()
647 		if (!master->match->compare[i].duplicate) {  in component_bind_all()
648 			c = master->match->compare[i].component;  in component_bind_all()
649 			ret = component_bind(c, master, data);  in component_bind_all()
656 			if (!master->match->compare[i - 1].duplicate) {  in component_bind_all()
657 				c = master->match->compare[i - 1].component;  in component_bind_all()
658 				component_unbind(c, master, data);  in component_bind_all()
687 		if (component->master)  in __component_add()
688 			remove_component(component->master, component);  in __component_add()
769 	if (component && component->master) {  in component_del()
770 		take_down_master(component->master);  in component_del()
771 		remove_component(component->master, component);  in component_del()