/*
* Init
*/
static int __init usb_init(void)
{
int retval;
if (nousb) {
pr_info("%s: USB support disabled\n", usbcore_name);
return 0;
}
retval = bus_register(&usb_bus_type);
if (retval)
goto bus_register_failed;
retval = bus_register_notifier(&usb_bus_type, &usb_bus_nb);
if (retval)
goto bus_notifier_failed;
retval = usb_host_init();
if (retval)
goto host_init_failed;
retval = usb_major_init();
if (retval)
goto major_init_failed;
retval = usb_register(&usbfs_driver);
if (retval)
goto driver_register_failed;
retval = usb_devio_init();
if (retval)
goto usb_devio_init_failed;
retval = usbfs_init();
if (retval)
goto fs_init_failed;
retval = usb_hub_init();
if (retval)
goto hub_init_failed;
retval = usb_register_device_driver(&usb_generic_driver, THIS_MODULE);
if (!retval)
goto out;
usb_hub_cleanup();
hub_init_failed:
usbfs_cleanup();
fs_init_failed:
usb_devio_cleanup();
usb_devio_init_failed:
usb_deregister(&usbfs_driver);
driver_register_failed:
usb_major_cleanup();
major_init_failed:
usb_host_cleanup();
host_init_failed:
bus_unregister_notifier(&usb_bus_type, &usb_bus_nb);
bus_notifier_failed:
bus_unregister(&usb_bus_type);
bus_register_failed:
out:
return retval;
}
/**
* Disposes the bus event module
*
* param [in] h bus handle
*
* @return E_ERR_SUCCESS otherwise
*/
e_mmgr_errors_t bus_ev_dispose(bus_ev_hdle_t *h)
{
bus_ev_t *bus_events = (bus_ev_t *)h;
if (bus_events) {
if (bus_events->ctx)
usb_host_cleanup(bus_events->ctx);
free(bus_events);
}
return E_ERR_SUCCESS;
}
/*
* Init
*/
static int __init usb_init(void)
{
int retval;
if (nousb) {
pr_info ("%s: USB support disabled\n", usbcore_name);
return 0;
}
//总线对象注册
retval = bus_register(&usb_bus_type);
if (retval)
goto out;
//usb-host
retval = usb_host_init();
if (retval)
goto host_init_failed;
retval = usb_major_init();
if (retval)
goto major_init_failed;
//usbfs注册
retval = usb_register(&usbfs_driver);
if (retval)
goto driver_register_failed;
retval = usbdev_init();
if (retval)
goto usbdevice_init_failed;
retval = usbfs_init();
if (retval)
goto fs_init_failed;
//初始化hub模块:注册hub驱动、创建hub端口检测线程
retval = usb_hub_init();
if (retval)
goto hub_init_failed;
retval = driver_register(&usb_generic_driver);
if (!retval)
goto out;
usb_hub_cleanup();
hub_init_failed:
usbfs_cleanup();
fs_init_failed:
usbdev_cleanup();
usbdevice_init_failed:
usb_deregister(&usbfs_driver);
driver_register_failed:
usb_major_cleanup();
major_init_failed:
usb_host_cleanup();
host_init_failed:
bus_unregister(&usb_bus_type);
out:
return retval;
}
/*
* Cleanup
*/
static void __exit usb_exit(void)
{
/* This will matter if shutdown/reboot does exitcalls. */
if (nousb)
return;
driver_unregister(&usb_generic_driver);
usb_major_cleanup();
usbfs_cleanup();
usb_deregister(&usbfs_driver);
usbdev_cleanup();
usb_hub_cleanup();
usb_host_cleanup();
bus_unregister(&usb_bus_type);
}
int lsusb_main(int argc, char **argv)
{
struct usb_host_context *ctx;
if (argc == 2 && !strcmp(argv[1], "-v"))
verbose = 1;
ctx = usb_host_init();
if (!ctx) {
perror("usb_host_init:");
return 1;
}
usb_host_run(ctx,
lsusb_device_added,
lsusb_device_removed,
lsusb_discovery_done,
NULL);
usb_host_cleanup(ctx);
return 0;
}
int hu_usb_run () { // Android specific C level libusbhost API requires thread for it's processing, and calling of the added/removed/disc-done callbacks
struct usb_host_context * context = usb_host_init ();
usb_host_run (context, usb_device_added, usb_device_removed, usb_discovery_done, (void * ) 0);
usb_host_cleanup (context);
return (0);
}
