static int wpanusb_init(struct device *dev)
{
struct wpanusb_dev_data_t * const dev_data = DEV_DATA(dev);
int ret;
SYS_LOG_DBG("");
wpanusb_config.interface.payload_data = dev_data->interface_data;
wpanusb_dev = dev;
/* Initialize the USB driver with the right configuration */
ret = usb_set_config(&wpanusb_config);
if (ret < 0) {
SYS_LOG_ERR("Failed to configure USB");
return ret;
}
/* Enable USB driver */
ret = usb_enable(&wpanusb_config);
if (ret < 0) {
SYS_LOG_ERR("Failed to enable USB");
return ret;
}
return 0;
}
static void
usb_handle_control(void *data, ssize_t len, void *cbdata)
{
struct usb_ctrl_req_t *req = data;
uint16_t zero16 = 0;
int fail = 1;
usb_clear_transfers();
usb.ctrl_dir = req->in;
if (req->type != USB_CTRL_REQ_STD) {
usb_handle_control_nonstd(req);
return;
}
/* Only STD requests here */
switch (req->bRequest) {
case USB_CTRL_REQ_GET_STATUS:
/**
* Because we don't support remote wakeup or
* self-powered operation, and we are specialized to
* only EP 0 so far, all GET_STATUS replies are just
* empty.
*/
usb_ep0_tx_cp(&zero16, sizeof(zero16), req->wLength, NULL, NULL);
break;
case USB_CTRL_REQ_CLEAR_FEATURE:
case USB_CTRL_REQ_SET_FEATURE:
/**
* Nothing to do. Maybe return STALLs on illegal
* accesses?
*/
break;
case USB_CTRL_REQ_SET_ADDRESS:
/**
* We must keep our previous address until the end of
* the status stage; therefore we can't set the
* address right now. Since this is a special case,
* the EP 0 handler will take care of this later on.
*/
usb.address = req->wValue & 0x7f;
usb.state = USBD_STATE_SETTING_ADDRESS;
break;
case USB_CTRL_REQ_GET_DESCRIPTOR:
switch (req->wValue >> 8) {
case USB_DESC_DEV:
usb_ep0_tx_cp(usb.identity->dev_desc, usb.identity->dev_desc->bLength,
req->wLength, NULL, NULL);
fail = 0;
break;
case USB_DESC_CONFIG:
fail = usb_tx_config_desc(req->wValue & 0xff, req->wLength);
break;
case USB_DESC_STRING:
fail = usb_tx_string_desc(req->wValue & 0xff, req->wLength);
break;
default:
fail = -1;
break;
}
/* we set fail already, so we can go directly to `err' */
goto err;
case USB_CTRL_REQ_GET_CONFIGURATION:
usb_ep0_tx_cp(&usb.config, 1, req->wLength, NULL, NULL); /* XXX implicit LE */
break;
case USB_CTRL_REQ_SET_CONFIGURATION:
if (usb_set_config(req->wValue) < 0)
goto err;
break;
case USB_CTRL_REQ_GET_INTERFACE:
/* We only support iface setting 0 */
usb_ep0_tx_cp(&zero16, 1, req->wLength, NULL, NULL);
break;
case USB_CTRL_REQ_SET_INTERFACE:
if (usb_set_interface(req->wIndex, req->wValue) < 0)
goto err;
break;
default:
goto err;
}
fail = 0;
err:
usb_handle_control_status(fail);
}