34  * host1x_subdev_add() - add a new subdevice with an associated device node
35  * @device: host1x device to add the subdevice to
37  * @np: device node
39 static int host1x_subdev_add(struct host1x_device *device,  in host1x_subdev_add()  argument
54 	mutex_lock(&device->subdevs_lock);  in host1x_subdev_add()
55 	list_add_tail(&subdev->list, &device->subdevs);  in host1x_subdev_add()
56 	mutex_unlock(&device->subdevs_lock);  in host1x_subdev_add()
62 			err = host1x_subdev_add(device, driver, child);  in host1x_subdev_add()
86  * host1x_device_parse_dt() - scan device tree and add matching subdevices
87  * @device: host1x logical device
90 static int host1x_device_parse_dt(struct host1x_device *device,  in host1x_device_parse_dt()  argument
96 	for_each_child_of_node(device->dev.parent->of_node, np) {  in host1x_device_parse_dt()
99 			err = host1x_subdev_add(device, driver, np);  in host1x_device_parse_dt()
110 static void host1x_subdev_register(struct host1x_device *device,  in host1x_subdev_register()  argument
119 	 * client with its parent device.  in host1x_subdev_register()
121 	mutex_lock(&device->subdevs_lock);  in host1x_subdev_register()
122 	mutex_lock(&device->clients_lock);  in host1x_subdev_register()
123 	list_move_tail(&client->list, &device->clients);  in host1x_subdev_register()
124 	list_move_tail(&subdev->list, &device->active);  in host1x_subdev_register()
125 	client->host = &device->dev;  in host1x_subdev_register()
127 	mutex_unlock(&device->clients_lock);  in host1x_subdev_register()
128 	mutex_unlock(&device->subdevs_lock);  in host1x_subdev_register()
130 	if (list_empty(&device->subdevs)) {  in host1x_subdev_register()
131 		err = device_add(&device->dev);  in host1x_subdev_register()
133 			dev_err(&device->dev, "failed to add: %d\n", err);  in host1x_subdev_register()
135 			device->registered = true;  in host1x_subdev_register()
139 static void __host1x_subdev_unregister(struct host1x_device *device,  in __host1x_subdev_unregister()  argument
148 	if (list_empty(&device->subdevs)) {  in __host1x_subdev_unregister()
149 		if (device->registered) {  in __host1x_subdev_unregister()
150 			device->registered = false;  in __host1x_subdev_unregister()
151 			device_del(&device->dev);  in __host1x_subdev_unregister()
159 	mutex_lock(&device->clients_lock);  in __host1x_subdev_unregister()
162 	list_move_tail(&subdev->list, &device->subdevs);  in __host1x_subdev_unregister()
165 	 * when the device is about to be deleted.  in __host1x_subdev_unregister()
169 	 * also when the composite device is about to be removed.  in __host1x_subdev_unregister()
172 	mutex_unlock(&device->clients_lock);  in __host1x_subdev_unregister()
175 static void host1x_subdev_unregister(struct host1x_device *device,  in host1x_subdev_unregister()  argument
178 	mutex_lock(&device->subdevs_lock);  in host1x_subdev_unregister()
179 	__host1x_subdev_unregister(device, subdev);  in host1x_subdev_unregister()
180 	mutex_unlock(&device->subdevs_lock);  in host1x_subdev_unregister()
184  * host1x_device_init() - initialize a host1x logical device
185  * @device: host1x logical device
187  * The driver for the host1x logical device can call this during execution of
193 int host1x_device_init(struct host1x_device *device)  in host1x_device_init()  argument
198 	mutex_lock(&device->clients_lock);  in host1x_device_init()
200 	list_for_each_entry(client, &device->clients, list) {  in host1x_device_init()
204 				dev_err(&device->dev, "failed to early initialize %s: %d\n",  in host1x_device_init()
211 	list_for_each_entry(client, &device->clients, list) {  in host1x_device_init()
215 				dev_err(&device->dev,  in host1x_device_init()
223 	mutex_unlock(&device->clients_lock);  in host1x_device_init()
228 	list_for_each_entry_continue_reverse(client, &device->clients, list)  in host1x_device_init()
233 	client = list_entry(&device->clients, struct host1x_client, list);  in host1x_device_init()
236 	list_for_each_entry_continue_reverse(client, &device->clients, list)  in host1x_device_init()
240 	mutex_unlock(&device->clients_lock);  in host1x_device_init()
246  * host1x_device_exit() - uninitialize host1x logical device
247  * @device: host1x logical device
249  * When the driver for a host1x logical device is unloaded, it can call this
254 int host1x_device_exit(struct host1x_device *device)  in host1x_device_exit()  argument
259 	mutex_lock(&device->clients_lock);  in host1x_device_exit()
261 	list_for_each_entry_reverse(client, &device->clients, list) {  in host1x_device_exit()
265 				dev_err(&device->dev,  in host1x_device_exit()
268 				mutex_unlock(&device->clients_lock);  in host1x_device_exit()
274 	list_for_each_entry_reverse(client, &device->clients, list) {  in host1x_device_exit()
278 				dev_err(&device->dev, "failed to late cleanup %s: %d\n",  in host1x_device_exit()
280 				mutex_unlock(&device->clients_lock);  in host1x_device_exit()
286 	mutex_unlock(&device->clients_lock);  in host1x_device_exit()
295 	struct host1x_device *device;  in host1x_add_client()  local
300 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_add_client()
301 		list_for_each_entry(subdev, &device->subdevs, list) {  in host1x_add_client()
303 				host1x_subdev_register(device, subdev, client);  in host1x_add_client()
317 	struct host1x_device *device, *dt;  in host1x_del_client()  local
322 	list_for_each_entry_safe(device, dt, &host1x->devices, list) {  in host1x_del_client()
323 		list_for_each_entry(subdev, &device->active, list) {  in host1x_del_client()
325 				host1x_subdev_unregister(device, subdev);  in host1x_del_client()
336 static int host1x_device_match(struct device *dev, const struct device_driver *drv)  in host1x_device_match()
346 static int host1x_device_uevent(const struct device *dev,  in host1x_device_uevent()
370 static void __host1x_device_del(struct host1x_device *device)  in __host1x_device_del()  argument
375 	mutex_lock(&device->subdevs_lock);  in __host1x_device_del()
378 	list_for_each_entry_safe(subdev, sd, &device->active, list) {  in __host1x_device_del()
390 		__host1x_subdev_unregister(device, subdev);  in __host1x_device_del()
399 	list_for_each_entry_safe(subdev, sd, &device->subdevs, list)  in __host1x_device_del()
402 	mutex_unlock(&device->subdevs_lock);  in __host1x_device_del()
406 	mutex_lock(&device->clients_lock);  in __host1x_device_del()
408 	list_for_each_entry_safe(client, cl, &device->clients, list)  in __host1x_device_del()
411 	mutex_unlock(&device->clients_lock);  in __host1x_device_del()
414 	/* finally remove the device */  in __host1x_device_del()
415 	list_del_init(&device->list);  in __host1x_device_del()
418 static void host1x_device_release(struct device *dev)  in host1x_device_release()
420 	struct host1x_device *device = to_host1x_device(dev);  in host1x_device_release()  local
422 	__host1x_device_del(device);  in host1x_device_release()
423 	kfree(device);  in host1x_device_release()
431 	struct host1x_device *device;  in host1x_device_add()  local
434 	device = kzalloc(sizeof(*device), GFP_KERNEL);  in host1x_device_add()
435 	if (!device)  in host1x_device_add()
438 	device_initialize(&device->dev);  in host1x_device_add()
440 	mutex_init(&device->subdevs_lock);  in host1x_device_add()
441 	INIT_LIST_HEAD(&device->subdevs);  in host1x_device_add()
442 	INIT_LIST_HEAD(&device->active);  in host1x_device_add()
443 	mutex_init(&device->clients_lock);  in host1x_device_add()
444 	INIT_LIST_HEAD(&device->clients);  in host1x_device_add()
445 	INIT_LIST_HEAD(&device->list);  in host1x_device_add()
446 	device->driver = driver;  in host1x_device_add()
448 	device->dev.coherent_dma_mask = host1x->dev->coherent_dma_mask;  in host1x_device_add()
449 	device->dev.dma_mask = &device->dev.coherent_dma_mask;  in host1x_device_add()
450 	dev_set_name(&device->dev, "%s", driver->driver.name);  in host1x_device_add()
451 	device->dev.release = host1x_device_release;  in host1x_device_add()
452 	device->dev.bus = &host1x_bus_type;  in host1x_device_add()
453 	device->dev.parent = host1x->dev;  in host1x_device_add()
455 	device->dev.dma_parms = &device->dma_parms;  in host1x_device_add()
456 	dma_set_max_seg_size(&device->dev, UINT_MAX);  in host1x_device_add()
458 	err = host1x_device_parse_dt(device, driver);  in host1x_device_add()
460 		kfree(device);  in host1x_device_add()
464 	list_add_tail(&device->list, &host1x->devices);  in host1x_device_add()
469 		list_for_each_entry(subdev, &device->subdevs, list) {  in host1x_device_add()
471 				host1x_subdev_register(device, subdev, client);  in host1x_device_add()
483  * Removes a device by first unregistering any subdevices and then removing
489 			      struct host1x_device *device)  in host1x_device_del()  argument
491 	if (device->registered) {  in host1x_device_del()
492 		device->registered = false;  in host1x_device_del()
493 		device_del(&device->dev);  in host1x_device_del()
496 	put_device(&device->dev);  in host1x_device_del()
502 	struct host1x_device *device;  in host1x_attach_driver()  local
507 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_attach_driver()
508 		if (device->driver == driver) {  in host1x_attach_driver()
516 		dev_err(host1x->dev, "failed to allocate device: %d\n", err);  in host1x_attach_driver()
524 	struct host1x_device *device, *tmp;  in host1x_detach_driver()  local
528 	list_for_each_entry_safe(device, tmp, &host1x->devices, list)  in host1x_detach_driver()
529 		if (device->driver == driver)  in host1x_detach_driver()
530 			host1x_device_del(host1x, device);  in host1x_detach_driver()
538 	struct host1x_device *device;  in host1x_devices_show()  local
542 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_devices_show()
545 		seq_printf(s, "%s\n", dev_name(&device->dev));  in host1x_devices_show()
547 		mutex_lock(&device->subdevs_lock);  in host1x_devices_show()
549 		list_for_each_entry(subdev, &device->active, list)  in host1x_devices_show()
553 		list_for_each_entry(subdev, &device->subdevs, list)  in host1x_devices_show()
556 		mutex_unlock(&device->subdevs_lock);  in host1x_devices_show()
619 static int host1x_device_probe(struct device *dev)  in host1x_device_probe()
622 	struct host1x_device *device = to_host1x_device(dev);  in host1x_device_probe()  local
625 		return driver->probe(device);  in host1x_device_probe()
630 static int host1x_device_remove(struct device *dev)  in host1x_device_remove()
633 	struct host1x_device *device = to_host1x_device(dev);  in host1x_device_remove()  local
636 		return driver->remove(device);  in host1x_device_remove()
641 static void host1x_device_shutdown(struct device *dev)  in host1x_device_shutdown()
644 	struct host1x_device *device = to_host1x_device(dev);  in host1x_device_shutdown()  local
647 		driver->shutdown(device);  in host1x_device_shutdown()
657  * registration of the driver actually triggers tho logical device creation.
658  * A logical device will be created for each host1x instance.
746  * device and call host1x_device_init(), which will in turn call each client's
779  * device has already been initialized, it will be torn down.
884 struct host1x_bo_mapping *host1x_bo_pin(struct device *dev, struct host1x_bo *bo,  in host1x_bo_pin()