167 	struct usb_pcwd_private *usb_pcwd =  in usb_pcwd_intr_done()  local
169 	unsigned char *data = usb_pcwd->intr_buffer;  in usb_pcwd_intr_done()
170 	struct device *dev = &usb_pcwd->interface->dev;  in usb_pcwd_intr_done()
193 	usb_pcwd->cmd_command  = data[0];  in usb_pcwd_intr_done()
194 	usb_pcwd->cmd_data_msb = data[1];  in usb_pcwd_intr_done()
195 	usb_pcwd->cmd_data_lsb = data[2];  in usb_pcwd_intr_done()
198 	atomic_set(&usb_pcwd->cmd_received, 1);  in usb_pcwd_intr_done()
207 static int usb_pcwd_send_command(struct usb_pcwd_private *usb_pcwd,  in usb_pcwd_send_command()  argument
215 	if ((!usb_pcwd) || (!usb_pcwd->exists))  in usb_pcwd_send_command()
229 	dev_dbg(&usb_pcwd->interface->dev,  in usb_pcwd_send_command()
233 	atomic_set(&usb_pcwd->cmd_received, 0);  in usb_pcwd_send_command()
235 	if (usb_control_msg(usb_pcwd->udev, usb_sndctrlpipe(usb_pcwd->udev, 0),  in usb_pcwd_send_command()
237 			0x0200, usb_pcwd->interface_number, buf, 6,  in usb_pcwd_send_command()
239 		dev_dbg(&usb_pcwd->interface->dev,  in usb_pcwd_send_command()
249 		if (atomic_read(&usb_pcwd->cmd_received))  in usb_pcwd_send_command()
253 	if ((got_response) && (cmd == usb_pcwd->cmd_command)) {  in usb_pcwd_send_command()
255 		*msb = usb_pcwd->cmd_data_msb;  in usb_pcwd_send_command()
256 		*lsb = usb_pcwd->cmd_data_lsb;  in usb_pcwd_send_command()
264 static int usb_pcwd_start(struct usb_pcwd_private *usb_pcwd)  in usb_pcwd_start()  argument
271 	retval = usb_pcwd_send_command(usb_pcwd, CMD_ENABLE_WATCHDOG,  in usb_pcwd_start()
282 static int usb_pcwd_stop(struct usb_pcwd_private *usb_pcwd)  in usb_pcwd_stop()  argument
289 	retval = usb_pcwd_send_command(usb_pcwd, CMD_DISABLE_WATCHDOG,  in usb_pcwd_stop()
300 static int usb_pcwd_keepalive(struct usb_pcwd_private *usb_pcwd)  in usb_pcwd_keepalive()  argument
305 	usb_pcwd_send_command(usb_pcwd, CMD_TRIGGER, &dummy, &dummy);  in usb_pcwd_keepalive()
310 static int usb_pcwd_set_heartbeat(struct usb_pcwd_private *usb_pcwd, int t)  in usb_pcwd_set_heartbeat()  argument
319 	usb_pcwd_send_command(usb_pcwd, CMD_WRITE_WATCHDOG_TIMEOUT, &msb, &lsb);  in usb_pcwd_set_heartbeat()
325 static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd,  in usb_pcwd_get_temperature()  argument
330 	usb_pcwd_send_command(usb_pcwd, CMD_READ_TEMP, &msb, &lsb);  in usb_pcwd_get_temperature()
341 static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd,  in usb_pcwd_get_timeleft()  argument
348 	usb_pcwd_send_command(usb_pcwd, CMD_READ_WATCHDOG_TIMEOUT, &msb, &lsb);  in usb_pcwd_get_timeleft()
585 static inline void usb_pcwd_delete(struct usb_pcwd_private *usb_pcwd)  in usb_pcwd_delete()  argument
587 	usb_free_urb(usb_pcwd->intr_urb);  in usb_pcwd_delete()
588 	usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size,  in usb_pcwd_delete()
589 			  usb_pcwd->intr_buffer, usb_pcwd->intr_dma);  in usb_pcwd_delete()
590 	kfree(usb_pcwd);  in usb_pcwd_delete()
605 	struct usb_pcwd_private *usb_pcwd = NULL;  in usb_pcwd_probe()  local
644 	usb_pcwd = kzalloc(sizeof(struct usb_pcwd_private), GFP_KERNEL);  in usb_pcwd_probe()
645 	if (usb_pcwd == NULL)  in usb_pcwd_probe()
648 	usb_pcwd_device = usb_pcwd;  in usb_pcwd_probe()
650 	mutex_init(&usb_pcwd->mtx);  in usb_pcwd_probe()
651 	usb_pcwd->udev = udev;  in usb_pcwd_probe()
652 	usb_pcwd->interface = interface;  in usb_pcwd_probe()
653 	usb_pcwd->interface_number = iface_desc->desc.bInterfaceNumber;  in usb_pcwd_probe()
654 	usb_pcwd->intr_size = (le16_to_cpu(endpoint->wMaxPacketSize) > 8 ?  in usb_pcwd_probe()
658 	usb_pcwd->intr_buffer = usb_alloc_coherent(udev, usb_pcwd->intr_size,  in usb_pcwd_probe()
659 					GFP_KERNEL, &usb_pcwd->intr_dma);  in usb_pcwd_probe()
660 	if (!usb_pcwd->intr_buffer) {  in usb_pcwd_probe()
666 	usb_pcwd->intr_urb = usb_alloc_urb(0, GFP_KERNEL);  in usb_pcwd_probe()
667 	if (!usb_pcwd->intr_urb)  in usb_pcwd_probe()
671 	usb_fill_int_urb(usb_pcwd->intr_urb, udev, pipe,  in usb_pcwd_probe()
672 			usb_pcwd->intr_buffer, usb_pcwd->intr_size,  in usb_pcwd_probe()
673 			usb_pcwd_intr_done, usb_pcwd, endpoint->bInterval);  in usb_pcwd_probe()
674 	usb_pcwd->intr_urb->transfer_dma = usb_pcwd->intr_dma;  in usb_pcwd_probe()
675 	usb_pcwd->intr_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;  in usb_pcwd_probe()
678 	if (usb_submit_urb(usb_pcwd->intr_urb, GFP_KERNEL)) {  in usb_pcwd_probe()
685 	usb_pcwd->exists = 1;  in usb_pcwd_probe()
688 	usb_pcwd_stop(usb_pcwd);  in usb_pcwd_probe()
691 	got_fw_rev = usb_pcwd_send_command(usb_pcwd, CMD_GET_FIRMWARE_VERSION,  in usb_pcwd_probe()
701 	usb_pcwd_send_command(usb_pcwd, CMD_GET_DIP_SWITCH_SETTINGS, &dummy,  in usb_pcwd_probe()
715 	if (usb_pcwd_set_heartbeat(usb_pcwd, heartbeat)) {  in usb_pcwd_probe()
716 		usb_pcwd_set_heartbeat(usb_pcwd, WATCHDOG_HEARTBEAT);  in usb_pcwd_probe()
742 	usb_set_intfdata(interface, usb_pcwd);  in usb_pcwd_probe()
754 	if (usb_pcwd)  in usb_pcwd_probe()
755 		usb_pcwd_delete(usb_pcwd);  in usb_pcwd_probe()
771 	struct usb_pcwd_private *usb_pcwd;  in usb_pcwd_disconnect()  local
776 	usb_pcwd = usb_get_intfdata(interface);  in usb_pcwd_disconnect()
779 	mutex_lock(&usb_pcwd->mtx);  in usb_pcwd_disconnect()
783 		usb_pcwd_stop(usb_pcwd);  in usb_pcwd_disconnect()
786 	usb_pcwd->exists = 0;  in usb_pcwd_disconnect()
793 	mutex_unlock(&usb_pcwd->mtx);  in usb_pcwd_disconnect()
796 	usb_pcwd_delete(usb_pcwd);  in usb_pcwd_disconnect()