75 	struct uart_port port;  member
80 static void sp_uart_put_char(struct uart_port *port, unsigned int ch)  in sp_uart_put_char()  argument
82 	writel(ch, port->membase + SUP_UART_DATA);  in sp_uart_put_char()
85 static u32 sunplus_tx_buf_not_full(struct uart_port *port)  in sunplus_tx_buf_not_full()  argument
87 	unsigned int lsr = readl(port->membase + SUP_UART_LSR);  in sunplus_tx_buf_not_full()
92 static unsigned int sunplus_tx_empty(struct uart_port *port)  in sunplus_tx_empty()  argument
94 	unsigned int lsr = readl(port->membase + SUP_UART_LSR);  in sunplus_tx_empty()
99 static void sunplus_set_mctrl(struct uart_port *port, unsigned int mctrl)  in sunplus_set_mctrl()  argument
101 	unsigned int mcr = readl(port->membase + SUP_UART_MCR);  in sunplus_set_mctrl()
128 	writel(mcr, port->membase + SUP_UART_MCR);  in sunplus_set_mctrl()
131 static unsigned int sunplus_get_mctrl(struct uart_port *port)  in sunplus_get_mctrl()  argument
135 	mcr = readl(port->membase + SUP_UART_MCR);  in sunplus_get_mctrl()
155 static void sunplus_stop_tx(struct uart_port *port)  in sunplus_stop_tx()  argument
159 	isc = readl(port->membase + SUP_UART_ISC);  in sunplus_stop_tx()
161 	writel(isc, port->membase + SUP_UART_ISC);  in sunplus_stop_tx()
164 static void sunplus_start_tx(struct uart_port *port)  in sunplus_start_tx()  argument
168 	isc = readl(port->membase + SUP_UART_ISC);  in sunplus_start_tx()
170 	writel(isc, port->membase + SUP_UART_ISC);  in sunplus_start_tx()
173 static void sunplus_stop_rx(struct uart_port *port)  in sunplus_stop_rx()  argument
177 	isc = readl(port->membase + SUP_UART_ISC);  in sunplus_stop_rx()
179 	writel(isc, port->membase + SUP_UART_ISC);  in sunplus_stop_rx()
182 static void sunplus_break_ctl(struct uart_port *port, int ctl)  in sunplus_break_ctl()  argument
187 	uart_port_lock_irqsave(port, &flags);  in sunplus_break_ctl()
189 	lcr = readl(port->membase + SUP_UART_LCR);  in sunplus_break_ctl()
196 	writel(lcr, port->membase + SUP_UART_LCR);  in sunplus_break_ctl()
198 	uart_port_unlock_irqrestore(port, flags);  in sunplus_break_ctl()
201 static void transmit_chars(struct uart_port *port)  in transmit_chars()  argument
203 	struct tty_port *tport = &port->state->port;  in transmit_chars()
205 	if (port->x_char) {  in transmit_chars()
206 		sp_uart_put_char(port, port->x_char);  in transmit_chars()
207 		port->icount.tx++;  in transmit_chars()
208 		port->x_char = 0;  in transmit_chars()
212 	if (kfifo_is_empty(&tport->xmit_fifo) || uart_tx_stopped(port)) {  in transmit_chars()
213 		sunplus_stop_tx(port);  in transmit_chars()
220 		if (!uart_fifo_get(port, &ch))  in transmit_chars()
223 		sp_uart_put_char(port, ch);  in transmit_chars()
224 	} while (sunplus_tx_buf_not_full(port));  in transmit_chars()
227 		uart_write_wakeup(port);  in transmit_chars()
230 		sunplus_stop_tx(port);  in transmit_chars()
233 static void receive_chars(struct uart_port *port)  in receive_chars()  argument
235 	unsigned int lsr = readl(port->membase + SUP_UART_LSR);  in receive_chars()
239 		ch = readl(port->membase + SUP_UART_DATA);  in receive_chars()
241 		port->icount.rx++;  in receive_chars()
246 				port->icount.brk++;  in receive_chars()
248 				if (uart_handle_break(port))  in receive_chars()
251 				port->icount.parity++;  in receive_chars()
254 				port->icount.frame++;  in receive_chars()
259 				port->icount.overrun++;  in receive_chars()
262 		if (port->ignore_status_mask & SUP_DUMMY_READ)  in receive_chars()
265 		if (uart_prepare_sysrq_char(port, ch))  in receive_chars()
268 		uart_insert_char(port, lsr, SUP_UART_LSR_OE, ch, flag);  in receive_chars()
271 		lsr = readl(port->membase + SUP_UART_LSR);  in receive_chars()
274 	tty_flip_buffer_push(&port->state->port);  in receive_chars()
279 	struct uart_port *port = args;  in sunplus_uart_irq()  local
282 	uart_port_lock(port);  in sunplus_uart_irq()
284 	isc = readl(port->membase + SUP_UART_ISC);  in sunplus_uart_irq()
287 		receive_chars(port);  in sunplus_uart_irq()
290 		transmit_chars(port);  in sunplus_uart_irq()
292 	uart_unlock_and_check_sysrq(port);  in sunplus_uart_irq()
297 static int sunplus_startup(struct uart_port *port)  in sunplus_startup()  argument
303 	ret = request_irq(port->irq, sunplus_uart_irq, 0, "sunplus_uart", port);  in sunplus_startup()
307 	uart_port_lock_irqsave(port, &flags);  in sunplus_startup()
313 	writel(isc, port->membase + SUP_UART_ISC);  in sunplus_startup()
314 	uart_port_unlock_irqrestore(port, flags);  in sunplus_startup()
319 static void sunplus_shutdown(struct uart_port *port)  in sunplus_shutdown()  argument
323 	uart_port_lock_irqsave(port, &flags);  in sunplus_shutdown()
328 	writel(0, port->membase + SUP_UART_ISC); /* disable all interrupt */  in sunplus_shutdown()
329 	uart_port_unlock_irqrestore(port, flags);  in sunplus_shutdown()
331 	free_irq(port->irq, port);  in sunplus_shutdown()
334 static void sunplus_set_termios(struct uart_port *port,  in sunplus_set_termios()  argument
339 	u32 clk = port->uartclk;  in sunplus_set_termios()
342 	baud = uart_get_baud_rate(port, termios, oldtermios, 0, port->uartclk / 16);  in sunplus_set_termios()
377 	uart_port_lock_irqsave(port, &flags);  in sunplus_set_termios()
379 	uart_update_timeout(port, termios->c_cflag, baud);  in sunplus_set_termios()
381 	port->read_status_mask = 0;  in sunplus_set_termios()
383 		port->read_status_mask |= SUP_UART_LSR_PE | SUP_UART_LSR_FE;  in sunplus_set_termios()
386 		port->read_status_mask |= SUP_UART_LSR_BC;  in sunplus_set_termios()
389 	port->ignore_status_mask = 0;  in sunplus_set_termios()
391 		port->ignore_status_mask |= SUP_UART_LSR_FE | SUP_UART_LSR_PE;  in sunplus_set_termios()
394 		port->ignore_status_mask |= SUP_UART_LSR_BC;  in sunplus_set_termios()
397 			port->ignore_status_mask |= SUP_UART_LSR_OE;  in sunplus_set_termios()
402 		port->ignore_status_mask |= SUP_DUMMY_READ;  in sunplus_set_termios()
404 		writel(0, port->membase + SUP_UART_RX_RESIDUE);  in sunplus_set_termios()
408 	writel(div_h, port->membase + SUP_UART_DIV_H);  in sunplus_set_termios()
409 	writel(div_l, port->membase + SUP_UART_DIV_L);  in sunplus_set_termios()
410 	writel(lcr, port->membase + SUP_UART_LCR);  in sunplus_set_termios()
412 	uart_port_unlock_irqrestore(port, flags);  in sunplus_set_termios()
415 static void sunplus_set_ldisc(struct uart_port *port, struct ktermios *termios)  in sunplus_set_ldisc()  argument
420 		port->flags |= UPF_HARDPPS_CD;  in sunplus_set_ldisc()
422 		port->flags &= ~UPF_HARDPPS_CD;  in sunplus_set_ldisc()
425 static const char *sunplus_type(struct uart_port *port)  in sunplus_type()  argument
427 	return port->type == PORT_SUNPLUS ? "sunplus_uart" : NULL;  in sunplus_type()
430 static void sunplus_config_port(struct uart_port *port, int type)  in sunplus_config_port()  argument
433 		port->type = PORT_SUNPLUS;  in sunplus_config_port()
436 static int sunplus_verify_port(struct uart_port *port, struct serial_struct *ser)  in sunplus_verify_port()  argument
445 static void wait_for_xmitr(struct uart_port *port)  in wait_for_xmitr()  argument
451 	ret = readl_poll_timeout_atomic(port->membase + SUP_UART_LSR, val,  in wait_for_xmitr()
455 		dev_err(port->dev, "Timeout waiting while UART TX FULL\n");  in wait_for_xmitr()
462 static void sunplus_poll_put_char(struct uart_port *port, unsigned char data)  in sunplus_poll_put_char()  argument
464 	wait_for_xmitr(port);  in sunplus_poll_put_char()
465 	sp_uart_put_char(port, data);  in sunplus_poll_put_char()
468 static int sunplus_poll_get_char(struct uart_port *port)  in sunplus_poll_get_char()  argument
470 	unsigned int lsr = readl(port->membase + SUP_UART_LSR);  in sunplus_poll_get_char()
475 	return readl(port->membase + SUP_UART_DATA);  in sunplus_poll_get_char()
503 static void sunplus_uart_console_putchar(struct uart_port *port,  in sunplus_uart_console_putchar()  argument
506 	wait_for_xmitr(port);  in sunplus_uart_console_putchar()
507 	sp_uart_put_char(port, ch);  in sunplus_uart_console_putchar()
518 		locked = uart_port_trylock_irqsave(&sunplus_console_ports[co->index]->port, &flags);  in sunplus_console_write()
520 		uart_port_lock_irqsave(&sunplus_console_ports[co->index]->port, &flags);  in sunplus_console_write()
522 	uart_console_write(&sunplus_console_ports[co->index]->port, s, count,  in sunplus_console_write()
526 		uart_port_unlock_irqrestore(&sunplus_console_ports[co->index]->port, flags);  in sunplus_console_write()
547 	return uart_set_options(&sup->port, co, baud, parity, bits, flow);  in sunplus_console_setup()
589 	struct uart_port *port;  in sunplus_uart_probe()  local
618 	port = &sup->port;  in sunplus_uart_probe()
620 	port->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in sunplus_uart_probe()
621 	if (IS_ERR(port->membase))  in sunplus_uart_probe()
622 		return dev_err_probe(&pdev->dev, PTR_ERR(port->membase), "membase not found\n");  in sunplus_uart_probe()
628 	port->mapbase = res->start;  in sunplus_uart_probe()
629 	port->uartclk = clk_get_rate(sup->clk);  in sunplus_uart_probe()
630 	port->line = pdev->id;  in sunplus_uart_probe()
631 	port->irq = irq;  in sunplus_uart_probe()
632 	port->dev = &pdev->dev;  in sunplus_uart_probe()
633 	port->iotype = UPIO_MEM;  in sunplus_uart_probe()
634 	port->ops = &sunplus_uart_ops;  in sunplus_uart_probe()
635 	port->flags = UPF_BOOT_AUTOCONF;  in sunplus_uart_probe()
636 	port->fifosize = 128;  in sunplus_uart_probe()
647 	sunplus_console_ports[sup->port.line] = sup;  in sunplus_uart_probe()
650 	platform_set_drvdata(pdev, &sup->port);  in sunplus_uart_probe()
652 	ret = uart_add_one_port(&sunplus_uart_driver, &sup->port);  in sunplus_uart_probe()
655 		sunplus_console_ports[sup->port.line] = NULL;  in sunplus_uart_probe()
665 	uart_remove_one_port(&sunplus_uart_driver, &sup->port);  in sunplus_uart_remove()
672 	if (!uart_console(&sup->port))  in sunplus_uart_suspend()
673 		uart_suspend_port(&sunplus_uart_driver, &sup->port);  in sunplus_uart_suspend()
682 	if (!uart_console(&sup->port))  in sunplus_uart_resume()
683 		uart_resume_port(&sunplus_uart_driver, &sup->port);  in sunplus_uart_resume()
732 static void sunplus_uart_putc(struct uart_port *port, unsigned char c)  in sunplus_uart_putc()  argument
737 	ret = readl_poll_timeout_atomic(port->membase + SUP_UART_LSR, val,  in sunplus_uart_putc()
742 	writel(c, port->membase + SUP_UART_DATA);  in sunplus_uart_putc()
749 	uart_console_write(&dev->port, s, n, sunplus_uart_putc);  in sunplus_uart_early_write()
755 	if (!(dev->port.membase || dev->port.iobase))  in sunplus_uart_early_setup()