18 dbc_send_packet(struct dbc_port *port, char *packet, unsigned int size)  in dbc_send_packet()  argument
22 	len = kfifo_len(&port->write_fifo);  in dbc_send_packet()
26 		size = kfifo_out(&port->write_fifo, packet, size);  in dbc_send_packet()
30 static int dbc_start_tx(struct dbc_port *port)  in dbc_start_tx()  argument
31 	__releases(&port->port_lock)  in dbc_start_tx()
32 	__acquires(&port->port_lock)  in dbc_start_tx()
38 	struct list_head	*pool = &port->write_pool;  in dbc_start_tx()
42 		len = dbc_send_packet(port, req->buf, DBC_MAX_PACKET);  in dbc_start_tx()
50 		spin_unlock(&port->port_lock);  in dbc_start_tx()
51 		status = dbc_ep_queue(port->out, req, GFP_ATOMIC);  in dbc_start_tx()
52 		spin_lock(&port->port_lock);  in dbc_start_tx()
60 	if (do_tty_wake && port->port.tty)  in dbc_start_tx()
61 		tty_wakeup(port->port.tty);  in dbc_start_tx()
66 static void dbc_start_rx(struct dbc_port *port)  in dbc_start_rx()  argument
67 	__releases(&port->port_lock)  in dbc_start_rx()
68 	__acquires(&port->port_lock)  in dbc_start_rx()
72 	struct list_head	*pool = &port->read_pool;  in dbc_start_rx()
75 		if (!port->port.tty)  in dbc_start_rx()
82 		spin_unlock(&port->port_lock);  in dbc_start_rx()
83 		status = dbc_ep_queue(port->in, req, GFP_ATOMIC);  in dbc_start_rx()
84 		spin_lock(&port->port_lock);  in dbc_start_rx()
98 	struct dbc_port		*port = &dbc->port;  in dbc_read_complete()  local
100 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_read_complete()
101 	list_add_tail(&req->list_pool, &port->read_queue);  in dbc_read_complete()
102 	tasklet_schedule(&port->push);  in dbc_read_complete()
103 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_read_complete()
110 	struct dbc_port		*port = &dbc->port;  in dbc_write_complete()  local
112 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_write_complete()
113 	list_add(&req->list_pool, &port->write_pool);  in dbc_write_complete()
116 		dbc_start_tx(port);  in dbc_write_complete()
125 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_write_complete()
174 	struct dbc_port		*port = driver->driver_state;  in dbc_tty_install()  local
176 	tty->driver_data = port;  in dbc_tty_install()
178 	return tty_port_install(&port->port, driver, tty);  in dbc_tty_install()
183 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_open()  local
185 	return tty_port_open(&port->port, tty, file);  in dbc_tty_open()
190 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_close()  local
192 	tty_port_close(&port->port, tty, file);  in dbc_tty_close()
199 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_write()  local
202 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_tty_write()
204 		count = kfifo_in(&port->write_fifo, buf, count);  in dbc_tty_write()
205 	dbc_start_tx(port);  in dbc_tty_write()
206 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_tty_write()
213 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_put_char()  local
217 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_tty_put_char()
218 	status = kfifo_put(&port->write_fifo, ch);  in dbc_tty_put_char()
219 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_tty_put_char()
226 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_flush_chars()  local
229 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_tty_flush_chars()
230 	dbc_start_tx(port);  in dbc_tty_flush_chars()
231 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_tty_flush_chars()
236 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_write_room()  local
240 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_tty_write_room()
241 	room = kfifo_avail(&port->write_fifo);  in dbc_tty_write_room()
242 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_tty_write_room()
249 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_chars_in_buffer()  local
253 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_tty_chars_in_buffer()
254 	chars = kfifo_len(&port->write_fifo);  in dbc_tty_chars_in_buffer()
255 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_tty_chars_in_buffer()
262 	struct dbc_port		*port = tty->driver_data;  in dbc_tty_unthrottle()  local
265 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_tty_unthrottle()
266 	tasklet_schedule(&port->push);  in dbc_tty_unthrottle()
267 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_tty_unthrottle()
307 	dbc_tty_driver->driver_state = &dbc->port;  in xhci_dbc_tty_register_driver()
338 	struct dbc_port		*port = (void *)_port;  in dbc_rx_push()  local
339 	struct list_head	*queue = &port->read_queue;  in dbc_rx_push()
341 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_rx_push()
342 	tty = port->port.tty;  in dbc_rx_push()
366 			n = port->n_read;  in dbc_rx_push()
372 			count = tty_insert_flip_string(&port->port, packet,  in dbc_rx_push()
377 				port->n_read += count;  in dbc_rx_push()
380 			port->n_read = 0;  in dbc_rx_push()
383 		list_move(&req->list_pool, &port->read_pool);  in dbc_rx_push()
387 		tty_flip_buffer_push(&port->port);  in dbc_rx_push()
392 				tasklet_schedule(&port->push);  in dbc_rx_push()
399 		dbc_start_rx(port);  in dbc_rx_push()
401 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_rx_push()
407 	struct dbc_port	*port = container_of(_port, struct dbc_port, port);  in dbc_port_activate()  local
409 	spin_lock_irqsave(&port->port_lock, flags);  in dbc_port_activate()
410 	dbc_start_rx(port);  in dbc_port_activate()
411 	spin_unlock_irqrestore(&port->port_lock, flags);  in dbc_port_activate()
421 xhci_dbc_tty_init_port(struct xhci_hcd *xhci, struct dbc_port *port)  in xhci_dbc_tty_init_port()  argument
423 	tty_port_init(&port->port);  in xhci_dbc_tty_init_port()
424 	spin_lock_init(&port->port_lock);  in xhci_dbc_tty_init_port()
425 	tasklet_init(&port->push, dbc_rx_push, (unsigned long)port);  in xhci_dbc_tty_init_port()
426 	INIT_LIST_HEAD(&port->read_pool);  in xhci_dbc_tty_init_port()
427 	INIT_LIST_HEAD(&port->read_queue);  in xhci_dbc_tty_init_port()
428 	INIT_LIST_HEAD(&port->write_pool);  in xhci_dbc_tty_init_port()
430 	port->in =		get_in_ep(xhci);  in xhci_dbc_tty_init_port()
431 	port->out =		get_out_ep(xhci);  in xhci_dbc_tty_init_port()
432 	port->port.ops =	&dbc_port_ops;  in xhci_dbc_tty_init_port()
433 	port->n_read =		0;  in xhci_dbc_tty_init_port()
437 xhci_dbc_tty_exit_port(struct dbc_port *port)  in xhci_dbc_tty_exit_port()  argument
439 	tasklet_kill(&port->push);  in xhci_dbc_tty_exit_port()
440 	tty_port_destroy(&port->port);  in xhci_dbc_tty_exit_port()
448 	struct dbc_port		*port = &dbc->port;  in xhci_dbc_tty_register_device()  local
450 	xhci_dbc_tty_init_port(xhci, port);  in xhci_dbc_tty_register_device()
451 	tty_dev = tty_port_register_device(&port->port,  in xhci_dbc_tty_register_device()
458 	ret = kfifo_alloc(&port->write_fifo, DBC_WRITE_BUF_SIZE, GFP_KERNEL);  in xhci_dbc_tty_register_device()
462 	ret = xhci_dbc_alloc_requests(port->in, &port->read_pool,  in xhci_dbc_tty_register_device()
467 	ret = xhci_dbc_alloc_requests(port->out, &port->write_pool,  in xhci_dbc_tty_register_device()
472 	port->registered = true;  in xhci_dbc_tty_register_device()
477 	xhci_dbc_free_requests(port->in, &port->read_pool);  in xhci_dbc_tty_register_device()
478 	xhci_dbc_free_requests(port->out, &port->write_pool);  in xhci_dbc_tty_register_device()
479 	kfifo_free(&port->write_fifo);  in xhci_dbc_tty_register_device()
485 	xhci_dbc_tty_exit_port(port);  in xhci_dbc_tty_register_device()
487 	xhci_err(xhci, "can't register tty port, err %d\n", ret);  in xhci_dbc_tty_register_device()
495 	struct dbc_port		*port = &dbc->port;  in xhci_dbc_tty_unregister_device()  local
498 	xhci_dbc_tty_exit_port(port);  in xhci_dbc_tty_unregister_device()
499 	port->registered = false;  in xhci_dbc_tty_unregister_device()
501 	kfifo_free(&port->write_fifo);  in xhci_dbc_tty_unregister_device()
502 	xhci_dbc_free_requests(get_out_ep(xhci), &port->read_pool);  in xhci_dbc_tty_unregister_device()
503 	xhci_dbc_free_requests(get_out_ep(xhci), &port->read_queue);  in xhci_dbc_tty_unregister_device()
504 	xhci_dbc_free_requests(get_in_ep(xhci), &port->write_pool);  in xhci_dbc_tty_unregister_device()