9 #include <linux/host1x.h>
35  * @device: host1x device to add the subdevice to
36  * @driver: host1x driver containing the subdevices
87  * @device: host1x logical device
88  * @driver: host1x driver
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
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
292 static int host1x_add_client(struct host1x *host1x,  in host1x_add_client()  argument
298 	mutex_lock(&host1x->devices_lock);  in host1x_add_client()
300 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_add_client()
304 				mutex_unlock(&host1x->devices_lock);  in host1x_add_client()
310 	mutex_unlock(&host1x->devices_lock);  in host1x_add_client()
314 static int host1x_del_client(struct host1x *host1x,  in host1x_del_client()  argument
320 	mutex_lock(&host1x->devices_lock);  in host1x_del_client()
322 	list_for_each_entry_safe(device, dt, &host1x->devices, list) {  in host1x_del_client()
326 				mutex_unlock(&host1x->devices_lock);  in host1x_del_client()
332 	mutex_unlock(&host1x->devices_lock);  in host1x_del_client()
369 	.name = "host1x",
432 static int host1x_device_add(struct host1x *host1x,  in host1x_device_add()  argument
454 	device->dev.coherent_dma_mask = host1x->dev->coherent_dma_mask;  in host1x_device_add()
459 	device->dev.parent = host1x->dev;  in host1x_device_add()
461 	of_dma_configure(&device->dev, host1x->dev->of_node, true);  in host1x_device_add()
472 	list_add_tail(&device->list, &host1x->devices);  in host1x_device_add()
494  * This function must be called with the host1x->devices_lock held.
496 static void host1x_device_del(struct host1x *host1x,  in host1x_device_del()  argument
507 static void host1x_attach_driver(struct host1x *host1x,  in host1x_attach_driver()  argument
513 	mutex_lock(&host1x->devices_lock);  in host1x_attach_driver()
515 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_attach_driver()
517 			mutex_unlock(&host1x->devices_lock);  in host1x_attach_driver()
522 	err = host1x_device_add(host1x, driver);  in host1x_attach_driver()
524 		dev_err(host1x->dev, "failed to allocate device: %d\n", err);  in host1x_attach_driver()
526 	mutex_unlock(&host1x->devices_lock);  in host1x_attach_driver()
529 static void host1x_detach_driver(struct host1x *host1x,  in host1x_detach_driver()  argument
534 	mutex_lock(&host1x->devices_lock);  in host1x_detach_driver()
536 	list_for_each_entry_safe(device, tmp, &host1x->devices, list)  in host1x_detach_driver()
538 			host1x_device_del(host1x, device);  in host1x_detach_driver()
540 	mutex_unlock(&host1x->devices_lock);  in host1x_detach_driver()
545 	struct host1x *host1x = s->private;  in host1x_devices_show()  local
548 	mutex_lock(&host1x->devices_lock);  in host1x_devices_show()
550 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_devices_show()
567 	mutex_unlock(&host1x->devices_lock);  in host1x_devices_show()
574  * host1x_register() - register a host1x controller
575  * @host1x: host1x controller
577  * The host1x controller driver uses this to register a host1x controller with
579  * with a single host1x instance, so this function is somewhat academic.
581 int host1x_register(struct host1x *host1x)  in host1x_register()  argument
586 	list_add_tail(&host1x->list, &devices);  in host1x_register()
592 		host1x_attach_driver(host1x, driver);  in host1x_register()
596 	debugfs_create_file("devices", S_IRUGO, host1x->debugfs, host1x,  in host1x_register()
603  * host1x_unregister() - unregister a host1x controller
604  * @host1x: host1x controller
606  * The host1x controller driver uses this to remove a host1x controller from
609 int host1x_unregister(struct host1x *host1x)  in host1x_unregister()  argument
616 		host1x_detach_driver(host1x, driver);  in host1x_unregister()
621 	list_del_init(&host1x->list);  in host1x_unregister()
659  * host1x_driver_register_full() - register a host1x driver
660  * @driver: host1x driver
663  * Drivers for host1x logical devices call this function to register a driver
666  * A logical device will be created for each host1x instance.
671 	struct host1x *host1x;  in host1x_driver_register_full()  local
681 	list_for_each_entry(host1x, &devices, list)  in host1x_driver_register_full()
682 		host1x_attach_driver(host1x, driver);  in host1x_driver_register_full()
697  * host1x_driver_unregister() - unregister a host1x driver
698  * @driver: host1x driver
700  * Unbinds the driver from each of the host1x logical devices that it is
705 	struct host1x *host1x;  in host1x_driver_unregister()  local
711 	list_for_each_entry(host1x, &devices, list)  in host1x_driver_unregister()
712 		host1x_detach_driver(host1x, driver);  in host1x_driver_unregister()
723  * __host1x_client_init() - initialize a host1x client
724  * @client: host1x client
731 	__mutex_init(&client->lock, "host1x client lock", key);  in __host1x_client_init()
737  * host1x_client_exit() - uninitialize a host1x client
738  * @client: host1x client
747  * __host1x_client_register() - register a host1x client
748  * @client: host1x client
750  * Registers a host1x client with each host1x controller instance. Note that
751  * each client will only match their parent host1x controller and will only be
753  * their parent host1x controller, the infrastructure will set up the logical
759 	struct host1x *host1x;  in __host1x_client_register()  local
764 	list_for_each_entry(host1x, &devices, list) {  in __host1x_client_register()
765 		err = host1x_add_client(host1x, client);  in __host1x_client_register()
783  * host1x_client_unregister() - unregister a host1x client
784  * @client: host1x client
786  * Removes a host1x client from its host1x controller instance. If a logical
792 	struct host1x *host1x;  in host1x_client_unregister()  local
797 	list_for_each_entry(host1x, &devices, list) {  in host1x_client_unregister()
798 		err = host1x_del_client(host1x, client);  in host1x_client_unregister()