135 	struct uart_port	port;  member
175 #define to_uart_omap_port(p) ((container_of((p), struct uart_omap_port, port)))
184 	offset <<= up->port.regshift;  in serial_in()
185 	return readw(up->port.membase + offset);  in serial_in()
190 	offset <<= up->port.regshift;  in serial_out()
191 	writew(value, up->port.membase + offset);  in serial_out()
244 static inline int calculate_baud_abs_diff(struct uart_port *port,  in calculate_baud_abs_diff()  argument
247 	unsigned int n = port->uartclk / (mode * baud);  in calculate_baud_abs_diff()
253 	abs_diff = baud - (port->uartclk / (mode * n));  in calculate_baud_abs_diff()
272 serial_omap_baud_is_mode16(struct uart_port *port, unsigned int baud)  in serial_omap_baud_is_mode16()  argument
274 	int abs_diff_13 = calculate_baud_abs_diff(port, baud, 13);  in serial_omap_baud_is_mode16()
275 	int abs_diff_16 = calculate_baud_abs_diff(port, baud, 16);  in serial_omap_baud_is_mode16()
286 serial_omap_get_divisor(struct uart_port *port, unsigned int baud)  in serial_omap_get_divisor()  argument
290 	if (!serial_omap_baud_is_mode16(port, baud))  in serial_omap_get_divisor()
294 	return port->uartclk/(mode * baud);  in serial_omap_get_divisor()
297 static void serial_omap_enable_ms(struct uart_port *port)  in serial_omap_enable_ms()  argument
299 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_enable_ms()
301 	dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line);  in serial_omap_enable_ms()
310 static void serial_omap_stop_tx(struct uart_port *port)  in serial_omap_stop_tx()  argument
312 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_stop_tx()
318 	if (port->rs485.flags & SER_RS485_ENABLED) {  in serial_omap_stop_tx()
329 			res = (port->rs485.flags & SER_RS485_RTS_AFTER_SEND) ?  in serial_omap_stop_tx()
332 				if (port->rs485.delay_rts_after_send > 0)  in serial_omap_stop_tx()
334 					port->rs485.delay_rts_after_send);  in serial_omap_stop_tx()
357 	if ((port->rs485.flags & SER_RS485_ENABLED) &&  in serial_omap_stop_tx()
358 	    !(port->rs485.flags & SER_RS485_RX_DURING_TX)) {  in serial_omap_stop_tx()
366 		up->port.read_status_mask |= UART_LSR_DR;  in serial_omap_stop_tx()
374 static void serial_omap_stop_rx(struct uart_port *port)  in serial_omap_stop_rx()  argument
376 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_stop_rx()
380 	up->port.read_status_mask &= ~UART_LSR_DR;  in serial_omap_stop_rx()
388 	struct circ_buf *xmit = &up->port.state->xmit;  in transmit_chars()
391 	if (up->port.x_char) {  in transmit_chars()
392 		serial_out(up, UART_TX, up->port.x_char);  in transmit_chars()
393 		up->port.icount.tx++;  in transmit_chars()
394 		up->port.x_char = 0;  in transmit_chars()
397 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {  in transmit_chars()
398 		serial_omap_stop_tx(&up->port);  in transmit_chars()
401 	count = up->port.fifosize / 4;  in transmit_chars()
405 		up->port.icount.tx++;  in transmit_chars()
411 		uart_write_wakeup(&up->port);  in transmit_chars()
414 		serial_omap_stop_tx(&up->port);  in transmit_chars()
425 static void serial_omap_start_tx(struct uart_port *port)  in serial_omap_start_tx()  argument
427 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_start_tx()
433 	if (port->rs485.flags & SER_RS485_ENABLED) {  in serial_omap_start_tx()
439 		res = (port->rs485.flags & SER_RS485_RTS_ON_SEND) ? 1 : 0;  in serial_omap_start_tx()
442 			if (port->rs485.delay_rts_before_send > 0)  in serial_omap_start_tx()
443 				mdelay(port->rs485.delay_rts_before_send);  in serial_omap_start_tx()
447 	if ((port->rs485.flags & SER_RS485_ENABLED) &&  in serial_omap_start_tx()
448 	    !(port->rs485.flags & SER_RS485_RX_DURING_TX))  in serial_omap_start_tx()
449 		serial_omap_stop_rx(port);  in serial_omap_start_tx()
456 static void serial_omap_throttle(struct uart_port *port)  in serial_omap_throttle()  argument
458 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_throttle()
462 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_throttle()
465 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_throttle()
470 static void serial_omap_unthrottle(struct uart_port *port)  in serial_omap_unthrottle()  argument
472 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_unthrottle()
476 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_unthrottle()
479 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_unthrottle()
495 	    up->port.state != NULL) {  in check_modem_status()
497 			up->port.icount.rng++;  in check_modem_status()
499 			up->port.icount.dsr++;  in check_modem_status()
502 				(&up->port, status & UART_MSR_DCD);  in check_modem_status()
505 				(&up->port, status & UART_MSR_CTS);  in check_modem_status()
506 		wake_up_interruptible(&up->port.state->port.delta_msr_wait);  in check_modem_status()
520 	up->port.icount.rx++;  in serial_omap_rlsi()
526 		up->port.icount.brk++;  in serial_omap_rlsi()
533 		if (uart_handle_break(&up->port))  in serial_omap_rlsi()
540 		up->port.icount.parity++;  in serial_omap_rlsi()
545 		up->port.icount.frame++;  in serial_omap_rlsi()
549 		up->port.icount.overrun++;  in serial_omap_rlsi()
552 	if (up->port.line == up->port.cons->index) {  in serial_omap_rlsi()
557 	uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag);  in serial_omap_rlsi()
570 	up->port.icount.rx++;  in serial_omap_rdi()
572 	if (uart_handle_sysrq_char(&up->port, ch))  in serial_omap_rdi()
575 	uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);  in serial_omap_rdi()
591 	spin_lock(&up->port.lock);  in serial_omap_irq()
630 	spin_unlock(&up->port.lock);  in serial_omap_irq()
632 	tty_flip_buffer_push(&up->port.state->port);  in serial_omap_irq()
641 static unsigned int serial_omap_tx_empty(struct uart_port *port)  in serial_omap_tx_empty()  argument
643 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_tx_empty()
648 	dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line);  in serial_omap_tx_empty()
649 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_tx_empty()
651 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_tx_empty()
657 static unsigned int serial_omap_get_mctrl(struct uart_port *port)  in serial_omap_get_mctrl()  argument
659 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_get_mctrl()
668 	dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line);  in serial_omap_get_mctrl()
681 static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)  in serial_omap_set_mctrl()  argument
683 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_set_mctrl()
686 	dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line);  in serial_omap_set_mctrl()
708 	if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS))  in serial_omap_set_mctrl()
719 static void serial_omap_break_ctl(struct uart_port *port, int break_state)  in serial_omap_break_ctl()  argument
721 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_break_ctl()
724 	dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line);  in serial_omap_break_ctl()
726 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_break_ctl()
732 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_break_ctl()
737 static int serial_omap_startup(struct uart_port *port)  in serial_omap_startup()  argument
739 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_startup()
746 	retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags,  in serial_omap_startup()
754 				     up->port.irqflags, up->name, up);  in serial_omap_startup()
756 			free_irq(up->port.irq, up);  in serial_omap_startup()
762 	dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);  in serial_omap_startup()
784 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_startup()
788 	up->port.mctrl |= TIOCM_OUT2;  in serial_omap_startup()
789 	serial_omap_set_mctrl(&up->port, up->port.mctrl);  in serial_omap_startup()
790 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_startup()
814 static void serial_omap_shutdown(struct uart_port *port)  in serial_omap_shutdown()  argument
816 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_shutdown()
819 	dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line);  in serial_omap_shutdown()
828 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_shutdown()
829 	up->port.mctrl &= ~TIOCM_OUT2;  in serial_omap_shutdown()
830 	serial_omap_set_mctrl(&up->port, up->port.mctrl);  in serial_omap_shutdown()
831 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_shutdown()
847 	free_irq(up->port.irq, up);  in serial_omap_shutdown()
861 serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,  in serial_omap_set_termios()  argument
864 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_set_termios()
898 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/13);  in serial_omap_set_termios()
899 	quot = serial_omap_get_divisor(port, baud);  in serial_omap_set_termios()
902 	up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8);  in serial_omap_set_termios()
918 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_set_termios()
923 	uart_update_timeout(port, termios->c_cflag, baud);  in serial_omap_set_termios()
925 	up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;  in serial_omap_set_termios()
927 		up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;  in serial_omap_set_termios()
929 		up->port.read_status_mask |= UART_LSR_BI;  in serial_omap_set_termios()
934 	up->port.ignore_status_mask = 0;  in serial_omap_set_termios()
936 		up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;  in serial_omap_set_termios()
938 		up->port.ignore_status_mask |= UART_LSR_BI;  in serial_omap_set_termios()
944 			up->port.ignore_status_mask |= UART_LSR_OE;  in serial_omap_set_termios()
951 		up->port.ignore_status_mask |= UART_LSR_DR;  in serial_omap_set_termios()
957 	if (UART_ENABLE_MS(&up->port, termios->c_cflag))  in serial_omap_set_termios()
1041 	if (!serial_omap_baud_is_mode16(port, baud))  in serial_omap_set_termios()
1065 	up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF);  in serial_omap_set_termios()
1067 	if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) {  in serial_omap_set_termios()
1069 		up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS;  in serial_omap_set_termios()
1076 	if (up->port.flags & UPF_SOFT_FLOW) {  in serial_omap_set_termios()
1094 			up->port.status |= UPSTAT_AUTOXOFF;  in serial_omap_set_termios()
1114 	serial_omap_set_mctrl(&up->port, up->port.mctrl);  in serial_omap_set_termios()
1116 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_set_termios()
1119 	dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line);  in serial_omap_set_termios()
1123 serial_omap_pm(struct uart_port *port, unsigned int state,  in serial_omap_pm()  argument
1126 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_pm()
1129 	dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line);  in serial_omap_pm()
1153 static void serial_omap_release_port(struct uart_port *port)  in serial_omap_release_port()  argument
1155 	dev_dbg(port->dev, "serial_omap_release_port+\n");  in serial_omap_release_port()
1158 static int serial_omap_request_port(struct uart_port *port)  in serial_omap_request_port()  argument
1160 	dev_dbg(port->dev, "serial_omap_request_port+\n");  in serial_omap_request_port()
1164 static void serial_omap_config_port(struct uart_port *port, int flags)  in serial_omap_config_port()  argument
1166 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_config_port()
1168 	dev_dbg(up->port.dev, "serial_omap_config_port+%d\n",  in serial_omap_config_port()
1169 							up->port.line);  in serial_omap_config_port()
1170 	up->port.type = PORT_OMAP;  in serial_omap_config_port()
1171 	up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW;  in serial_omap_config_port()
1175 serial_omap_verify_port(struct uart_port *port, struct serial_struct *ser)  in serial_omap_verify_port()  argument
1178 	dev_dbg(port->dev, "serial_omap_verify_port+\n");  in serial_omap_verify_port()
1183 serial_omap_type(struct uart_port *port)  in serial_omap_type()  argument
1185 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_type()
1187 	dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line);  in serial_omap_type()
1210 	if (up->port.flags & UPF_CONS_FLOW) {  in wait_for_xmitr()
1226 static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch)  in serial_omap_poll_put_char()  argument
1228 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_poll_put_char()
1237 static int serial_omap_poll_get_char(struct uart_port *port)  in serial_omap_poll_get_char()  argument
1239 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_poll_get_char()
1266 static void serial_omap_console_putchar(struct uart_port *port, int ch)  in serial_omap_console_putchar()  argument
1268 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_console_putchar()
1286 	if (up->port.sysrq)  in serial_omap_console_write()
1289 		locked = spin_trylock(&up->port.lock);  in serial_omap_console_write()
1291 		spin_lock(&up->port.lock);  in serial_omap_console_write()
1299 	uart_console_write(&up->port, s, count, serial_omap_console_putchar);  in serial_omap_console_write()
1320 		spin_unlock(&up->port.lock);  in serial_omap_console_write()
1340 	return uart_set_options(&up->port, co, baud, parity, bits, flow);  in serial_omap_console_setup()
1355 	serial_omap_console_ports[up->port.line] = up;  in serial_omap_add_console_port()
1371 serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)  in serial_omap_config_rs485()  argument
1373 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_config_rs485()
1389 	port->rs485 = *rs485;  in serial_omap_config_rs485()
1397 		val = (port->rs485.flags & SER_RS485_ENABLED) ?  in serial_omap_config_rs485()
1399 		val = (port->rs485.flags & val) ? 1 : 0;  in serial_omap_config_rs485()
1402 		port->rs485.flags &= ~SER_RS485_ENABLED;  in serial_omap_config_rs485()
1411 	if (!(port->rs485.flags & SER_RS485_ENABLED) &&  in serial_omap_config_rs485()
1478 	uart_suspend_port(&serial_omap_reg, &up->port);  in serial_omap_suspend()
1496 	uart_resume_port(&serial_omap_reg, &up->port);  in serial_omap_resume()
1510 	mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift));  in omap_serial_fill_features_erratas()
1576 	struct serial_rs485 *rs485conf = &up->port.rs485;  in serial_omap_probe_rs485()
1657 	up->port.dev = &pdev->dev;  in serial_omap_probe()
1658 	up->port.type = PORT_OMAP;  in serial_omap_probe()
1659 	up->port.iotype = UPIO_MEM;  in serial_omap_probe()
1660 	up->port.irq = uartirq;  in serial_omap_probe()
1661 	up->port.regshift = 2;  in serial_omap_probe()
1662 	up->port.fifosize = 64;  in serial_omap_probe()
1663 	up->port.ops = &serial_omap_pops;  in serial_omap_probe()
1675 	up->port.line = ret;  in serial_omap_probe()
1677 	if (up->port.line >= OMAP_MAX_HSUART_PORTS) {  in serial_omap_probe()
1678 		dev_err(&pdev->dev, "uart ID %d >  MAX %d.\n", up->port.line,  in serial_omap_probe()
1686 		dev_info(up->port.dev, "no wakeirq for uart%d\n",  in serial_omap_probe()
1687 			 up->port.line);  in serial_omap_probe()
1693 	sprintf(up->name, "OMAP UART%d", up->port.line);  in serial_omap_probe()
1694 	up->port.mapbase = mem->start;  in serial_omap_probe()
1695 	up->port.membase = base;  in serial_omap_probe()
1696 	up->port.flags = omap_up_info->flags;  in serial_omap_probe()
1697 	up->port.uartclk = omap_up_info->uartclk;  in serial_omap_probe()
1698 	up->port.rs485_config = serial_omap_config_rs485;  in serial_omap_probe()
1699 	if (!up->port.uartclk) {  in serial_omap_probe()
1700 		up->port.uartclk = DEFAULT_CLK_SPEED;  in serial_omap_probe()
1728 	ui[up->port.line] = up;  in serial_omap_probe()
1731 	ret = uart_add_one_port(&serial_omap_reg, &up->port);  in serial_omap_probe()
1755 	uart_remove_one_port(&serial_omap_reg, &up->port);  in serial_omap_remove()
1841 	    uart_console(&up->port))  in serial_omap_runtime_suspend()