88 	struct uart_port port;  member
97 static void wait_for_xmit_empty(struct uart_port *port)  in wait_for_xmit_empty()  argument
103 							port->membase))) == 0)  in wait_for_xmit_empty()
111 static void wait_for_xmit_ready(struct uart_port *port)  in wait_for_xmit_ready()  argument
117 							port->membase))) < 32)  in wait_for_xmit_ready()
125 static void lpc32xx_hsuart_console_putchar(struct uart_port *port, unsigned char ch)  in lpc32xx_hsuart_console_putchar()  argument
127 	wait_for_xmit_ready(port);  in lpc32xx_hsuart_console_putchar()
128 	writel((u32)ch, LPC32XX_HSUART_FIFO(port->membase));  in lpc32xx_hsuart_console_putchar()
140 		locked = uart_port_trylock_irqsave(&up->port, &flags);  in lpc32xx_hsuart_console_write()
142 		uart_port_lock_irqsave(&up->port, &flags);  in lpc32xx_hsuart_console_write()
144 	uart_console_write(&up->port, s, count, lpc32xx_hsuart_console_putchar);  in lpc32xx_hsuart_console_write()
145 	wait_for_xmit_empty(&up->port);  in lpc32xx_hsuart_console_write()
148 		uart_port_unlock_irqrestore(&up->port, flags);  in lpc32xx_hsuart_console_write()
154 	struct uart_port *port;  in lpc32xx_hsuart_console_setup()  local
163 	port = &lpc32xx_hs_ports[co->index].port;  in lpc32xx_hsuart_console_setup()
164 	if (!port->membase)  in lpc32xx_hsuart_console_setup()
170 	lpc32xx_loopback_set(port->mapbase, 0); /* get out of loopback mode */  in lpc32xx_hsuart_console_setup()
172 	return uart_set_options(port, co, baud, parity, bits, flow);  in lpc32xx_hsuart_console_setup()
236 static void __serial_uart_flush(struct uart_port *port)  in __serial_uart_flush()  argument
240 	while ((readl(LPC32XX_HSUART_LEVEL(port->membase)) > 0) &&  in __serial_uart_flush()
242 		readl(LPC32XX_HSUART_FIFO(port->membase));  in __serial_uart_flush()
245 static void __serial_lpc32xx_rx(struct uart_port *port)  in __serial_lpc32xx_rx()  argument
247 	struct tty_port *tport = &port->state->port;  in __serial_lpc32xx_rx()
251 	tmp = readl(LPC32XX_HSUART_FIFO(port->membase));  in __serial_lpc32xx_rx()
254 		port->icount.rx++;  in __serial_lpc32xx_rx()
259 			       LPC32XX_HSUART_IIR(port->membase));  in __serial_lpc32xx_rx()
260 			port->icount.frame++;  in __serial_lpc32xx_rx()
265 		if (!uart_prepare_sysrq_char(port, tmp & 0xff))  in __serial_lpc32xx_rx()
268 		tmp = readl(LPC32XX_HSUART_FIFO(port->membase));  in __serial_lpc32xx_rx()
274 static bool serial_lpc32xx_tx_ready(struct uart_port *port)  in serial_lpc32xx_tx_ready()  argument
276 	u32 level = readl(LPC32XX_HSUART_LEVEL(port->membase));  in serial_lpc32xx_tx_ready()
281 static void __serial_lpc32xx_tx(struct uart_port *port)  in __serial_lpc32xx_tx()  argument
285 	uart_port_tx(port, ch,  in __serial_lpc32xx_tx()
286 		serial_lpc32xx_tx_ready(port),  in __serial_lpc32xx_tx()
287 		writel(ch, LPC32XX_HSUART_FIFO(port->membase)));  in __serial_lpc32xx_tx()
292 	struct uart_port *port = dev_id;  in serial_lpc32xx_interrupt()  local
293 	struct tty_port *tport = &port->state->port;  in serial_lpc32xx_interrupt()
296 	uart_port_lock(port);  in serial_lpc32xx_interrupt()
299 	status = readl(LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_interrupt()
303 		writel(LPC32XX_HSU_BRK_INT, LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_interrupt()
304 		port->icount.brk++;  in serial_lpc32xx_interrupt()
305 		uart_handle_break(port);  in serial_lpc32xx_interrupt()
310 		writel(LPC32XX_HSU_FE_INT, LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_interrupt()
315 		       LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_interrupt()
316 		port->icount.overrun++;  in serial_lpc32xx_interrupt()
323 		__serial_lpc32xx_rx(port);  in serial_lpc32xx_interrupt()
326 	if ((status & LPC32XX_HSU_TX_INT) && (!uart_tx_stopped(port))) {  in serial_lpc32xx_interrupt()
327 		writel(LPC32XX_HSU_TX_INT, LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_interrupt()
328 		__serial_lpc32xx_tx(port);  in serial_lpc32xx_interrupt()
331 	uart_unlock_and_check_sysrq(port);  in serial_lpc32xx_interrupt()
336 /* port->lock is not held.  */
337 static unsigned int serial_lpc32xx_tx_empty(struct uart_port *port)  in serial_lpc32xx_tx_empty()  argument
341 	if (LPC32XX_HSU_TX_LEV(readl(LPC32XX_HSUART_LEVEL(port->membase))) == 0)  in serial_lpc32xx_tx_empty()
347 /* port->lock held by caller.  */
348 static void serial_lpc32xx_set_mctrl(struct uart_port *port,  in serial_lpc32xx_set_mctrl()  argument
354 /* port->lock is held by caller and interrupts are disabled.  */
355 static unsigned int serial_lpc32xx_get_mctrl(struct uart_port *port)  in serial_lpc32xx_get_mctrl()  argument
361 /* port->lock held by caller.  */
362 static void serial_lpc32xx_stop_tx(struct uart_port *port)  in serial_lpc32xx_stop_tx()  argument
366 	tmp = readl(LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_stop_tx()
368 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_stop_tx()
371 /* port->lock held by caller.  */
372 static void serial_lpc32xx_start_tx(struct uart_port *port)  in serial_lpc32xx_start_tx()  argument
376 	__serial_lpc32xx_tx(port);  in serial_lpc32xx_start_tx()
377 	tmp = readl(LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_start_tx()
379 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_start_tx()
382 /* port->lock held by caller.  */
383 static void serial_lpc32xx_stop_rx(struct uart_port *port)  in serial_lpc32xx_stop_rx()  argument
387 	tmp = readl(LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_stop_rx()
389 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_stop_rx()
392 		LPC32XX_HSU_FE_INT), LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_stop_rx()
395 /* port->lock is not held.  */
396 static void serial_lpc32xx_break_ctl(struct uart_port *port,  in serial_lpc32xx_break_ctl()  argument
402 	uart_port_lock_irqsave(port, &flags);  in serial_lpc32xx_break_ctl()
403 	tmp = readl(LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_break_ctl()
408 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_break_ctl()
409 	uart_port_unlock_irqrestore(port, flags);  in serial_lpc32xx_break_ctl()
412 /* port->lock is not held.  */
413 static int serial_lpc32xx_startup(struct uart_port *port)  in serial_lpc32xx_startup()  argument
419 	uart_port_lock_irqsave(port, &flags);  in serial_lpc32xx_startup()
421 	__serial_uart_flush(port);  in serial_lpc32xx_startup()
425 	       LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_startup()
427 	writel(0xFF, LPC32XX_HSUART_RATE(port->membase));  in serial_lpc32xx_startup()
435 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_startup()
437 	lpc32xx_loopback_set(port->mapbase, 0); /* get out of loopback mode */  in serial_lpc32xx_startup()
439 	uart_port_unlock_irqrestore(port, flags);  in serial_lpc32xx_startup()
441 	retval = request_irq(port->irq, serial_lpc32xx_interrupt,  in serial_lpc32xx_startup()
442 			     0, MODNAME, port);  in serial_lpc32xx_startup()
445 		       LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_startup()
450 /* port->lock is not held.  */
451 static void serial_lpc32xx_shutdown(struct uart_port *port)  in serial_lpc32xx_shutdown()  argument
456 	uart_port_lock_irqsave(port, &flags);  in serial_lpc32xx_shutdown()
460 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_shutdown()
462 	lpc32xx_loopback_set(port->mapbase, 1); /* go to loopback mode */  in serial_lpc32xx_shutdown()
464 	uart_port_unlock_irqrestore(port, flags);  in serial_lpc32xx_shutdown()
466 	free_irq(port->irq, port);  in serial_lpc32xx_shutdown()
469 /* port->lock is not held.  */
470 static void serial_lpc32xx_set_termios(struct uart_port *port,  in serial_lpc32xx_set_termios()  argument
484 	baud = uart_get_baud_rate(port, termios, old, 0,  in serial_lpc32xx_set_termios()
485 				  port->uartclk / 14);  in serial_lpc32xx_set_termios()
487 	quot = __serial_get_clock_div(port->uartclk, baud);  in serial_lpc32xx_set_termios()
489 	uart_port_lock_irqsave(port, &flags);  in serial_lpc32xx_set_termios()
492 	tmp = readl(LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_set_termios()
497 	writel(tmp, LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_set_termios()
499 	writel(quot, LPC32XX_HSUART_RATE(port->membase));  in serial_lpc32xx_set_termios()
501 	uart_update_timeout(port, termios->c_cflag, baud);  in serial_lpc32xx_set_termios()
503 	uart_port_unlock_irqrestore(port, flags);  in serial_lpc32xx_set_termios()
510 static const char *serial_lpc32xx_type(struct uart_port *port)  in serial_lpc32xx_type()  argument
515 static void serial_lpc32xx_release_port(struct uart_port *port)  in serial_lpc32xx_release_port()  argument
517 	if ((port->iotype == UPIO_MEM32) && (port->mapbase)) {  in serial_lpc32xx_release_port()
518 		if (port->flags & UPF_IOREMAP) {  in serial_lpc32xx_release_port()
519 			iounmap(port->membase);  in serial_lpc32xx_release_port()
520 			port->membase = NULL;  in serial_lpc32xx_release_port()
523 		release_mem_region(port->mapbase, SZ_4K);  in serial_lpc32xx_release_port()
527 static int serial_lpc32xx_request_port(struct uart_port *port)  in serial_lpc32xx_request_port()  argument
531 	if ((port->iotype == UPIO_MEM32) && (port->mapbase)) {  in serial_lpc32xx_request_port()
534 		if (!request_mem_region(port->mapbase, SZ_4K, MODNAME))  in serial_lpc32xx_request_port()
536 		else if (port->flags & UPF_IOREMAP) {  in serial_lpc32xx_request_port()
537 			port->membase = ioremap(port->mapbase, SZ_4K);  in serial_lpc32xx_request_port()
538 			if (!port->membase) {  in serial_lpc32xx_request_port()
539 				release_mem_region(port->mapbase, SZ_4K);  in serial_lpc32xx_request_port()
548 static void serial_lpc32xx_config_port(struct uart_port *port, int uflags)  in serial_lpc32xx_config_port()  argument
552 	ret = serial_lpc32xx_request_port(port);  in serial_lpc32xx_config_port()
555 	port->type = PORT_UART00;  in serial_lpc32xx_config_port()
556 	port->fifosize = 64;  in serial_lpc32xx_config_port()
558 	__serial_uart_flush(port);  in serial_lpc32xx_config_port()
562 	       LPC32XX_HSUART_IIR(port->membase));  in serial_lpc32xx_config_port()
564 	writel(0xFF, LPC32XX_HSUART_RATE(port->membase));  in serial_lpc32xx_config_port()
570 	       LPC32XX_HSUART_CTRL(port->membase));  in serial_lpc32xx_config_port()
573 static int serial_lpc32xx_verify_port(struct uart_port *port,  in serial_lpc32xx_verify_port()  argument
623 			"Error getting mem resource for HS UART port %d\n",  in serial_hs_lpc32xx_probe()
627 	p->port.mapbase = res->start;  in serial_hs_lpc32xx_probe()
628 	p->port.membase = NULL;  in serial_hs_lpc32xx_probe()
633 	p->port.irq = ret;  in serial_hs_lpc32xx_probe()
635 	p->port.iotype = UPIO_MEM32;  in serial_hs_lpc32xx_probe()
636 	p->port.uartclk = LPC32XX_MAIN_OSC_FREQ;  in serial_hs_lpc32xx_probe()
637 	p->port.regshift = 2;  in serial_hs_lpc32xx_probe()
638 	p->port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP;  in serial_hs_lpc32xx_probe()
639 	p->port.dev = &pdev->dev;  in serial_hs_lpc32xx_probe()
640 	p->port.ops = &serial_lpc32xx_pops;  in serial_hs_lpc32xx_probe()
641 	p->port.line = uarts_registered++;  in serial_hs_lpc32xx_probe()
642 	spin_lock_init(&p->port.lock);  in serial_hs_lpc32xx_probe()
644 	/* send port to loopback mode by default */  in serial_hs_lpc32xx_probe()
645 	lpc32xx_loopback_set(p->port.mapbase, 1);  in serial_hs_lpc32xx_probe()
647 	ret = uart_add_one_port(&lpc32xx_hs_reg, &p->port);  in serial_hs_lpc32xx_probe()
661 	uart_remove_one_port(&lpc32xx_hs_reg, &p->port);  in serial_hs_lpc32xx_remove()
671 	uart_suspend_port(&lpc32xx_hs_reg, &p->port);  in serial_hs_lpc32xx_suspend()
680 	uart_resume_port(&lpc32xx_hs_reg, &p->port);  in serial_hs_lpc32xx_resume()