Lines Matching refs:port
59 /* Static pointer to console port */
113 static inline u32 uart_in32(u32 offset, struct uart_port *port)
115 struct uartlite_data *pdata = port->private_data;
117 return pdata->reg_ops->in(port->membase + offset);
120 static inline void uart_out32(u32 val, u32 offset, struct uart_port *port)
122 struct uartlite_data *pdata = port->private_data;
124 pdata->reg_ops->out(val, port->membase + offset);
135 static int ulite_receive(struct uart_port *port, int stat)
137 struct tty_port *tport = &port->state->port;
147 port->icount.rx++;
148 ch = uart_in32(ULITE_RX, port);
151 port->icount.parity++;
155 port->icount.overrun++;
158 port->icount.frame++;
162 if (stat & port->ignore_status_mask & ULITE_STATUS_PARITY)
165 stat &= port->read_status_mask;
171 stat &= ~port->ignore_status_mask;
185 static int ulite_transmit(struct uart_port *port, int stat)
187 struct circ_buf *xmit = &port->state->xmit;
192 if (port->x_char) {
193 uart_out32(port->x_char, ULITE_TX, port);
194 port->x_char = 0;
195 port->icount.tx++;
199 if (uart_circ_empty(xmit) || uart_tx_stopped(port))
202 uart_out32(xmit->buf[xmit->tail], ULITE_TX, port);
203 uart_xmit_advance(port, 1);
207 uart_write_wakeup(port);
214 struct uart_port *port = dev_id;
219 spin_lock_irqsave(&port->lock, flags);
220 stat = uart_in32(ULITE_STATUS, port);
221 busy = ulite_receive(port, stat);
222 busy |= ulite_transmit(port, stat);
223 spin_unlock_irqrestore(&port->lock, flags);
229 tty_flip_buffer_push(&port->state->port);
236 static unsigned int ulite_tx_empty(struct uart_port *port)
241 spin_lock_irqsave(&port->lock, flags);
242 ret = uart_in32(ULITE_STATUS, port);
243 spin_unlock_irqrestore(&port->lock, flags);
248 static unsigned int ulite_get_mctrl(struct uart_port *port)
253 static void ulite_set_mctrl(struct uart_port *port, unsigned int mctrl)
258 static void ulite_stop_tx(struct uart_port *port)
263 static void ulite_start_tx(struct uart_port *port)
265 ulite_transmit(port, uart_in32(ULITE_STATUS, port));
268 static void ulite_stop_rx(struct uart_port *port)
271 port->ignore_status_mask = ULITE_STATUS_RXVALID | ULITE_STATUS_PARITY
275 static void ulite_break_ctl(struct uart_port *port, int ctl)
280 static int ulite_startup(struct uart_port *port)
282 struct uartlite_data *pdata = port->private_data;
287 dev_err(port->dev, "Failed to enable clock\n");
291 ret = request_irq(port->irq, ulite_isr, IRQF_SHARED | IRQF_TRIGGER_RISING,
292 "uartlite", port);
297 ULITE_CONTROL, port);
298 uart_out32(ULITE_CONTROL_IE, ULITE_CONTROL, port);
303 static void ulite_shutdown(struct uart_port *port)
305 struct uartlite_data *pdata = port->private_data;
307 uart_out32(0, ULITE_CONTROL, port);
308 uart_in32(ULITE_CONTROL, port); /* dummy */
309 free_irq(port->irq, port);
313 static void ulite_set_termios(struct uart_port *port,
318 struct uartlite_data *pdata = port->private_data;
326 spin_lock_irqsave(&port->lock, flags);
328 port->read_status_mask = ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN
332 port->read_status_mask |=
335 port->ignore_status_mask = 0;
337 port->ignore_status_mask |= ULITE_STATUS_PARITY
342 port->ignore_status_mask |=
347 uart_update_timeout(port, termios->c_cflag, pdata->baud);
349 spin_unlock_irqrestore(&port->lock, flags);
352 static const char *ulite_type(struct uart_port *port)
354 return port->type == PORT_UARTLITE ? "uartlite" : NULL;
357 static void ulite_release_port(struct uart_port *port)
359 release_mem_region(port->mapbase, ULITE_REGION);
360 iounmap(port->membase);
361 port->membase = NULL;
364 static int ulite_request_port(struct uart_port *port)
366 struct uartlite_data *pdata = port->private_data;
369 pr_debug("ulite console: port=%p; port->mapbase=%llx\n",
370 port, (unsigned long long) port->mapbase);
372 if (!request_mem_region(port->mapbase, ULITE_REGION, "uartlite")) {
373 dev_err(port->dev, "Memory region busy\n");
377 port->membase = ioremap(port->mapbase, ULITE_REGION);
378 if (!port->membase) {
379 dev_err(port->dev, "Unable to map registers\n");
380 release_mem_region(port->mapbase, ULITE_REGION);
385 ret = uart_in32(ULITE_CONTROL, port);
386 uart_out32(ULITE_CONTROL_RST_TX, ULITE_CONTROL, port);
387 ret = uart_in32(ULITE_STATUS, port);
395 static void ulite_config_port(struct uart_port *port, int flags)
397 if (!ulite_request_port(port))
398 port->type = PORT_UARTLITE;
401 static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser)
403 /* we don't want the core code to modify any port params */
407 static void ulite_pm(struct uart_port *port, unsigned int state,
413 ret = pm_runtime_get_sync(port->dev);
415 dev_err(port->dev, "Failed to enable clocks\n");
417 pm_runtime_mark_last_busy(port->dev);
418 pm_runtime_put_autosuspend(port->dev);
423 static int ulite_get_poll_char(struct uart_port *port)
425 if (!(uart_in32(ULITE_STATUS, port) & ULITE_STATUS_RXVALID))
428 return uart_in32(ULITE_RX, port);
431 static void ulite_put_poll_char(struct uart_port *port, unsigned char ch)
433 while (uart_in32(ULITE_STATUS, port) & ULITE_STATUS_TXFULL)
437 uart_out32(ch, ULITE_TX, port);
469 static void ulite_console_wait_tx(struct uart_port *port)
478 0, 1000000, false, ULITE_STATUS, port))
479 dev_warn(port->dev,
483 static void ulite_console_putchar(struct uart_port *port, unsigned char ch)
485 ulite_console_wait_tx(port);
486 uart_out32(ch, ULITE_TX, port);
492 struct uart_port *port = console_port;
498 locked = spin_trylock_irqsave(&port->lock, flags);
500 spin_lock_irqsave(&port->lock, flags);
503 ier = uart_in32(ULITE_STATUS, port) & ULITE_STATUS_IE;
504 uart_out32(0, ULITE_CONTROL, port);
506 uart_console_write(port, s, count, ulite_console_putchar);
508 ulite_console_wait_tx(port);
512 uart_out32(ULITE_CONTROL_IE, ULITE_CONTROL, port);
515 spin_unlock_irqrestore(&port->lock, flags);
520 struct uart_port *port = NULL;
527 port = ulite_ports + co->index;
530 if (!port || !port->mapbase) {
535 console_port = port;
538 if (!port->membase) {
539 if (ulite_request_port(port))
546 return uart_set_options(port, co, baud, parity, bits, flow);
559 static void early_uartlite_putc(struct uart_port *port, unsigned char c)
571 (readl(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL))
576 writel(c & 0xff, port->membase + ULITE_TX);
583 uart_console_write(&device->port, s, n, early_uartlite_putc);
589 if (!device->port.membase)
620 * @id: requested id number. Pass -1 for automatic port assignment
630 struct uart_port *port;
650 port = &ulite_ports[id];
652 spin_lock_init(&port->lock);
653 port->fifosize = 16;
654 port->regshift = 2;
655 port->iotype = UPIO_MEM;
656 port->iobase = 1; /* mark port in use */
657 port->mapbase = base;
658 port->membase = NULL;
659 port->ops = &ulite_ops;
660 port->irq = irq;
661 port->flags = UPF_BOOT_AUTOCONF;
662 port->dev = dev;
663 port->type = PORT_UNKNOWN;
664 port->line = id;
665 port->private_data = pdata;
667 dev_set_drvdata(dev, port);
669 /* Register the port */
670 rc = uart_add_one_port(&ulite_uart_driver, port);
673 port->mapbase = 0;
687 struct uart_port *port = dev_get_drvdata(dev);
689 if (port) {
690 uart_remove_one_port(&ulite_uart_driver, port);
692 port->mapbase = 0;
704 struct uart_port *port = dev_get_drvdata(dev);
706 if (port)
707 uart_suspend_port(&ulite_uart_driver, port);
720 struct uart_port *port = dev_get_drvdata(dev);
722 if (port)
723 uart_resume_port(&ulite_uart_driver, port);
730 struct uart_port *port = dev_get_drvdata(dev);
731 struct uartlite_data *pdata = port->private_data;
739 struct uart_port *port = dev_get_drvdata(dev);
740 struct uartlite_data *pdata = port->private_data;
788 prop = "port-number";
895 struct uart_port *port = dev_get_drvdata(&pdev->dev);
896 struct uartlite_data *pdata = port->private_data;