Lines Matching refs:port
80 static inline unsigned int bcm_uart_readl(struct uart_port *port, in bcm_uart_readl() argument
83 return __raw_readl(port->membase + offset); in bcm_uart_readl()
86 static inline void bcm_uart_writel(struct uart_port *port, in bcm_uart_writel() argument
89 __raw_writel(value, port->membase + offset); in bcm_uart_writel()
95 static unsigned int bcm_uart_tx_empty(struct uart_port *port) in bcm_uart_tx_empty() argument
99 val = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_tx_empty()
106 static void bcm_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) in bcm_uart_set_mctrl() argument
110 val = bcm_uart_readl(port, UART_MCTL_REG); in bcm_uart_set_mctrl()
117 bcm_uart_writel(port, val, UART_MCTL_REG); in bcm_uart_set_mctrl()
119 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_set_mctrl()
124 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_set_mctrl()
130 static unsigned int bcm_uart_get_mctrl(struct uart_port *port) in bcm_uart_get_mctrl() argument
135 val = bcm_uart_readl(port, UART_EXTINP_REG); in bcm_uart_get_mctrl()
150 static void bcm_uart_stop_tx(struct uart_port *port) in bcm_uart_stop_tx() argument
154 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_stop_tx()
156 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_stop_tx()
158 val = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_stop_tx()
160 bcm_uart_writel(port, val, UART_IR_REG); in bcm_uart_stop_tx()
166 static void bcm_uart_start_tx(struct uart_port *port) in bcm_uart_start_tx() argument
170 val = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_start_tx()
172 bcm_uart_writel(port, val, UART_IR_REG); in bcm_uart_start_tx()
174 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_start_tx()
176 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_start_tx()
182 static void bcm_uart_stop_rx(struct uart_port *port) in bcm_uart_stop_rx() argument
186 val = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_stop_rx()
188 bcm_uart_writel(port, val, UART_IR_REG); in bcm_uart_stop_rx()
194 static void bcm_uart_enable_ms(struct uart_port *port) in bcm_uart_enable_ms() argument
198 val = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_enable_ms()
200 bcm_uart_writel(port, val, UART_IR_REG); in bcm_uart_enable_ms()
206 static void bcm_uart_break_ctl(struct uart_port *port, int ctl) in bcm_uart_break_ctl() argument
211 spin_lock_irqsave(&port->lock, flags); in bcm_uart_break_ctl()
213 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_break_ctl()
218 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_break_ctl()
220 spin_unlock_irqrestore(&port->lock, flags); in bcm_uart_break_ctl()
226 static const char *bcm_uart_type(struct uart_port *port) in bcm_uart_type() argument
228 return (port->type == PORT_BCM63XX) ? "bcm63xx_uart" : NULL; in bcm_uart_type()
234 static void bcm_uart_do_rx(struct uart_port *port) in bcm_uart_do_rx() argument
236 struct tty_port *tty_port = &port->state->port; in bcm_uart_do_rx()
249 iestat = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_do_rx()
256 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_do_rx()
258 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_do_rx()
260 port->icount.overrun++; in bcm_uart_do_rx()
267 cstat = c = bcm_uart_readl(port, UART_FIFO_REG); in bcm_uart_do_rx()
268 port->icount.rx++; in bcm_uart_do_rx()
275 port->icount.brk++; in bcm_uart_do_rx()
276 if (uart_handle_break(port)) in bcm_uart_do_rx()
281 port->icount.parity++; in bcm_uart_do_rx()
283 port->icount.frame++; in bcm_uart_do_rx()
286 cstat &= port->read_status_mask; in bcm_uart_do_rx()
295 if (uart_handle_sysrq_char(port, c)) in bcm_uart_do_rx()
299 if ((cstat & port->ignore_status_mask) == 0) in bcm_uart_do_rx()
304 spin_unlock(&port->lock); in bcm_uart_do_rx()
306 spin_lock(&port->lock); in bcm_uart_do_rx()
313 static void bcm_uart_do_tx(struct uart_port *port) in bcm_uart_do_tx() argument
318 if (port->x_char) { in bcm_uart_do_tx()
319 bcm_uart_writel(port, port->x_char, UART_FIFO_REG); in bcm_uart_do_tx()
320 port->icount.tx++; in bcm_uart_do_tx()
321 port->x_char = 0; in bcm_uart_do_tx()
325 if (uart_tx_stopped(port)) { in bcm_uart_do_tx()
326 bcm_uart_stop_tx(port); in bcm_uart_do_tx()
330 xmit = &port->state->xmit; in bcm_uart_do_tx()
334 val = bcm_uart_readl(port, UART_MCTL_REG); in bcm_uart_do_tx()
336 max_count = port->fifosize - val; in bcm_uart_do_tx()
342 bcm_uart_writel(port, c, UART_FIFO_REG); in bcm_uart_do_tx()
344 port->icount.tx++; in bcm_uart_do_tx()
350 uart_write_wakeup(port); in bcm_uart_do_tx()
358 val = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_do_tx()
360 bcm_uart_writel(port, val, UART_IR_REG); in bcm_uart_do_tx()
369 struct uart_port *port; in bcm_uart_interrupt() local
372 port = dev_id; in bcm_uart_interrupt()
373 spin_lock(&port->lock); in bcm_uart_interrupt()
375 irqstat = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_interrupt()
377 bcm_uart_do_rx(port); in bcm_uart_interrupt()
380 bcm_uart_do_tx(port); in bcm_uart_interrupt()
385 estat = bcm_uart_readl(port, UART_EXTINP_REG); in bcm_uart_interrupt()
387 uart_handle_cts_change(port, in bcm_uart_interrupt()
390 uart_handle_dcd_change(port, in bcm_uart_interrupt()
394 spin_unlock(&port->lock); in bcm_uart_interrupt()
401 static void bcm_uart_enable(struct uart_port *port) in bcm_uart_enable() argument
405 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_enable()
407 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_enable()
413 static void bcm_uart_disable(struct uart_port *port) in bcm_uart_disable() argument
417 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_disable()
420 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_disable()
426 static void bcm_uart_flush(struct uart_port *port) in bcm_uart_flush() argument
431 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_flush()
433 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_flush()
437 (void)bcm_uart_readl(port, UART_FIFO_REG); in bcm_uart_flush()
443 static int bcm_uart_startup(struct uart_port *port) in bcm_uart_startup() argument
449 bcm_uart_disable(port); in bcm_uart_startup()
450 bcm_uart_writel(port, 0, UART_IR_REG); in bcm_uart_startup()
451 bcm_uart_flush(port); in bcm_uart_startup()
454 (void)bcm_uart_readl(port, UART_EXTINP_REG); in bcm_uart_startup()
457 val = bcm_uart_readl(port, UART_MCTL_REG); in bcm_uart_startup()
459 val |= (port->fifosize / 2) << UART_MCTL_RXFIFOTHRESH_SHIFT; in bcm_uart_startup()
460 val |= (port->fifosize / 2) << UART_MCTL_TXFIFOTHRESH_SHIFT; in bcm_uart_startup()
461 bcm_uart_writel(port, val, UART_MCTL_REG); in bcm_uart_startup()
464 val = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_startup()
467 bcm_uart_writel(port, val, UART_CTL_REG); in bcm_uart_startup()
473 bcm_uart_writel(port, val, UART_EXTINP_REG); in bcm_uart_startup()
476 ret = request_irq(port->irq, bcm_uart_interrupt, 0, in bcm_uart_startup()
477 dev_name(port->dev), port); in bcm_uart_startup()
480 bcm_uart_writel(port, UART_RX_INT_MASK, UART_IR_REG); in bcm_uart_startup()
481 bcm_uart_enable(port); in bcm_uart_startup()
488 static void bcm_uart_shutdown(struct uart_port *port) in bcm_uart_shutdown() argument
492 spin_lock_irqsave(&port->lock, flags); in bcm_uart_shutdown()
493 bcm_uart_writel(port, 0, UART_IR_REG); in bcm_uart_shutdown()
494 spin_unlock_irqrestore(&port->lock, flags); in bcm_uart_shutdown()
496 bcm_uart_disable(port); in bcm_uart_shutdown()
497 bcm_uart_flush(port); in bcm_uart_shutdown()
498 free_irq(port->irq, port); in bcm_uart_shutdown()
504 static void bcm_uart_set_termios(struct uart_port *port, in bcm_uart_set_termios() argument
511 spin_lock_irqsave(&port->lock, flags); in bcm_uart_set_termios()
514 bcm_uart_disable(port); in bcm_uart_set_termios()
515 bcm_uart_flush(port); in bcm_uart_set_termios()
518 ctl = bcm_uart_readl(port, UART_CTL_REG); in bcm_uart_set_termios()
548 bcm_uart_writel(port, ctl, UART_CTL_REG); in bcm_uart_set_termios()
551 baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16); in bcm_uart_set_termios()
552 quot = uart_get_divisor(port, baud) - 1; in bcm_uart_set_termios()
553 bcm_uart_writel(port, quot, UART_BAUD_REG); in bcm_uart_set_termios()
556 ier = bcm_uart_readl(port, UART_IR_REG); in bcm_uart_set_termios()
559 if (UART_ENABLE_MS(port, new->c_cflag)) in bcm_uart_set_termios()
562 bcm_uart_writel(port, ier, UART_IR_REG); in bcm_uart_set_termios()
565 port->read_status_mask = UART_FIFO_VALID_MASK; in bcm_uart_set_termios()
567 port->read_status_mask |= UART_FIFO_FRAMEERR_MASK; in bcm_uart_set_termios()
568 port->read_status_mask |= UART_FIFO_PARERR_MASK; in bcm_uart_set_termios()
571 port->read_status_mask |= UART_FIFO_BRKDET_MASK; in bcm_uart_set_termios()
573 port->ignore_status_mask = 0; in bcm_uart_set_termios()
575 port->ignore_status_mask |= UART_FIFO_PARERR_MASK; in bcm_uart_set_termios()
577 port->ignore_status_mask |= UART_FIFO_BRKDET_MASK; in bcm_uart_set_termios()
579 port->ignore_status_mask |= UART_FIFO_VALID_MASK; in bcm_uart_set_termios()
581 uart_update_timeout(port, new->c_cflag, baud); in bcm_uart_set_termios()
582 bcm_uart_enable(port); in bcm_uart_set_termios()
583 spin_unlock_irqrestore(&port->lock, flags); in bcm_uart_set_termios()
589 static int bcm_uart_request_port(struct uart_port *port) in bcm_uart_request_port() argument
598 static void bcm_uart_release_port(struct uart_port *port) in bcm_uart_release_port() argument
606 static void bcm_uart_config_port(struct uart_port *port, int flags) in bcm_uart_config_port() argument
609 if (bcm_uart_request_port(port)) in bcm_uart_config_port()
611 port->type = PORT_BCM63XX; in bcm_uart_config_port()
619 static int bcm_uart_verify_port(struct uart_port *port, in bcm_uart_verify_port() argument
622 if (port->type != PORT_BCM63XX) in bcm_uart_verify_port()
624 if (port->irq != serinfo->irq) in bcm_uart_verify_port()
626 if (port->iotype != serinfo->io_type) in bcm_uart_verify_port()
628 if (port->mapbase != (unsigned long)serinfo->iomem_base) in bcm_uart_verify_port()
656 static inline void wait_for_xmitr(struct uart_port *port) in wait_for_xmitr() argument
665 val = bcm_uart_readl(port, UART_IR_REG); in wait_for_xmitr()
672 if (port->flags & UPF_CONS_FLOW) { in wait_for_xmitr()
677 val = bcm_uart_readl(port, UART_EXTINP_REG); in wait_for_xmitr()
688 static void bcm_console_putchar(struct uart_port *port, int ch) in bcm_console_putchar() argument
690 wait_for_xmitr(port); in bcm_console_putchar()
691 bcm_uart_writel(port, ch, UART_FIFO_REG); in bcm_console_putchar()
700 struct uart_port *port; in bcm_console_write() local
704 port = &ports[co->index]; in bcm_console_write()
707 if (port->sysrq) { in bcm_console_write()
711 locked = spin_trylock(&port->lock); in bcm_console_write()
713 spin_lock(&port->lock); in bcm_console_write()
718 uart_console_write(port, s, count, bcm_console_putchar); in bcm_console_write()
721 wait_for_xmitr(port); in bcm_console_write()
724 spin_unlock(&port->lock); in bcm_console_write()
734 struct uart_port *port; in bcm_console_setup() local
742 port = &ports[co->index]; in bcm_console_setup()
743 if (!port->membase) in bcm_console_setup()
748 return uart_set_options(port, co, baud, parity, bits, flow); in bcm_console_setup()
775 uart_console_write(&dev->port, s, n, bcm_console_putchar); in bcm_early_write()
776 wait_for_xmitr(&dev->port); in bcm_early_write()
782 if (!device->port.membase) in bcm_early_console_setup()
812 struct uart_port *port; in bcm_uart_probe() local
822 port = &ports[pdev->id]; in bcm_uart_probe()
823 if (port->membase) in bcm_uart_probe()
825 memset(port, 0, sizeof(*port)); in bcm_uart_probe()
831 port->mapbase = res_mem->start; in bcm_uart_probe()
832 port->membase = devm_ioremap_resource(&pdev->dev, res_mem); in bcm_uart_probe()
833 if (IS_ERR(port->membase)) in bcm_uart_probe()
834 return PTR_ERR(port->membase); in bcm_uart_probe()
845 port->iotype = UPIO_MEM; in bcm_uart_probe()
846 port->irq = res_irq->start; in bcm_uart_probe()
847 port->ops = &bcm_uart_ops; in bcm_uart_probe()
848 port->flags = UPF_BOOT_AUTOCONF; in bcm_uart_probe()
849 port->dev = &pdev->dev; in bcm_uart_probe()
850 port->fifosize = 16; in bcm_uart_probe()
851 port->uartclk = clk_get_rate(clk) / 2; in bcm_uart_probe()
852 port->line = pdev->id; in bcm_uart_probe()
855 ret = uart_add_one_port(&bcm_uart_driver, port); in bcm_uart_probe()
860 platform_set_drvdata(pdev, port); in bcm_uart_probe()
866 struct uart_port *port; in bcm_uart_remove() local
868 port = platform_get_drvdata(pdev); in bcm_uart_remove()
869 uart_remove_one_port(&bcm_uart_driver, port); in bcm_uart_remove()