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()
364 	.name = "host1x",
426 static int host1x_device_add(struct host1x *host1x,  in host1x_device_add()  argument
448 	device->dev.coherent_dma_mask = host1x->dev->coherent_dma_mask;  in host1x_device_add()
453 	device->dev.parent = host1x->dev;  in host1x_device_add()
464 	list_add_tail(&device->list, &host1x->devices);  in host1x_device_add()
486  * This function must be called with the host1x->devices_lock held.
488 static void host1x_device_del(struct host1x *host1x,  in host1x_device_del()  argument
499 static void host1x_attach_driver(struct host1x *host1x,  in host1x_attach_driver()  argument
505 	mutex_lock(&host1x->devices_lock);  in host1x_attach_driver()
507 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_attach_driver()
509 			mutex_unlock(&host1x->devices_lock);  in host1x_attach_driver()
514 	err = host1x_device_add(host1x, driver);  in host1x_attach_driver()
516 		dev_err(host1x->dev, "failed to allocate device: %d\n", err);  in host1x_attach_driver()
518 	mutex_unlock(&host1x->devices_lock);  in host1x_attach_driver()
521 static void host1x_detach_driver(struct host1x *host1x,  in host1x_detach_driver()  argument
526 	mutex_lock(&host1x->devices_lock);  in host1x_detach_driver()
528 	list_for_each_entry_safe(device, tmp, &host1x->devices, list)  in host1x_detach_driver()
530 			host1x_device_del(host1x, device);  in host1x_detach_driver()
532 	mutex_unlock(&host1x->devices_lock);  in host1x_detach_driver()
537 	struct host1x *host1x = s->private;  in host1x_devices_show()  local
540 	mutex_lock(&host1x->devices_lock);  in host1x_devices_show()
542 	list_for_each_entry(device, &host1x->devices, list) {  in host1x_devices_show()
559 	mutex_unlock(&host1x->devices_lock);  in host1x_devices_show()
566  * host1x_register() - register a host1x controller
567  * @host1x: host1x controller
569  * The host1x controller driver uses this to register a host1x controller with
571  * with a single host1x instance, so this function is somewhat academic.
573 int host1x_register(struct host1x *host1x)  in host1x_register()  argument
578 	list_add_tail(&host1x->list, &devices);  in host1x_register()
584 		host1x_attach_driver(host1x, driver);  in host1x_register()
588 	debugfs_create_file("devices", S_IRUGO, host1x->debugfs, host1x,  in host1x_register()
595  * host1x_unregister() - unregister a host1x controller
596  * @host1x: host1x controller
598  * The host1x controller driver uses this to remove a host1x controller from
601 int host1x_unregister(struct host1x *host1x)  in host1x_unregister()  argument
608 		host1x_detach_driver(host1x, driver);  in host1x_unregister()
613 	list_del_init(&host1x->list);  in host1x_unregister()
651  * host1x_driver_register_full() - register a host1x driver
652  * @driver: host1x driver
655  * Drivers for host1x logical devices call this function to register a driver
658  * A logical device will be created for each host1x instance.
663 	struct host1x *host1x;  in host1x_driver_register_full()  local
673 	list_for_each_entry(host1x, &devices, list)  in host1x_driver_register_full()
674 		host1x_attach_driver(host1x, driver);  in host1x_driver_register_full()
689  * host1x_driver_unregister() - unregister a host1x driver
690  * @driver: host1x driver
692  * Unbinds the driver from each of the host1x logical devices that it is
697 	struct host1x *host1x;  in host1x_driver_unregister()  local
703 	list_for_each_entry(host1x, &devices, list)  in host1x_driver_unregister()
704 		host1x_detach_driver(host1x, driver);  in host1x_driver_unregister()
715  * __host1x_client_init() - initialize a host1x client
716  * @client: host1x client
723 	__mutex_init(&client->lock, "host1x client lock", key);  in __host1x_client_init()
729  * host1x_client_exit() - uninitialize a host1x client
730  * @client: host1x client
739  * __host1x_client_register() - register a host1x client
740  * @client: host1x client
742  * Registers a host1x client with each host1x controller instance. Note that
743  * each client will only match their parent host1x controller and will only be
745  * their parent host1x controller, the infrastructure will set up the logical
751 	struct host1x *host1x;  in __host1x_client_register()  local
756 	list_for_each_entry(host1x, &devices, list) {  in __host1x_client_register()
757 		err = host1x_add_client(host1x, client);  in __host1x_client_register()
775  * host1x_client_unregister() - unregister a host1x client
776  * @client: host1x client
778  * Removes a host1x client from its host1x controller instance. If a logical
784 	struct host1x *host1x;  in host1x_client_unregister()  local
789 	list_for_each_entry(host1x, &devices, list) {  in host1x_client_unregister()
790 		err = host1x_del_client(host1x, client);  in host1x_client_unregister()