136 	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()
229 static inline int calculate_baud_abs_diff(struct uart_port *port,  in calculate_baud_abs_diff()  argument
232 	unsigned int n = port->uartclk / (mode * baud);  in calculate_baud_abs_diff()
238 	abs_diff = baud - (port->uartclk / (mode * n));  in calculate_baud_abs_diff()
257 serial_omap_baud_is_mode16(struct uart_port *port, unsigned int baud)  in serial_omap_baud_is_mode16()  argument
259 	int abs_diff_13 = calculate_baud_abs_diff(port, baud, 13);  in serial_omap_baud_is_mode16()
260 	int abs_diff_16 = calculate_baud_abs_diff(port, baud, 16);  in serial_omap_baud_is_mode16()
271 serial_omap_get_divisor(struct uart_port *port, unsigned int baud)  in serial_omap_get_divisor()  argument
275 	if (!serial_omap_baud_is_mode16(port, baud))  in serial_omap_get_divisor()
279 	return port->uartclk/(mode * baud);  in serial_omap_get_divisor()
282 static void serial_omap_enable_ms(struct uart_port *port)  in serial_omap_enable_ms()  argument
284 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_enable_ms()
286 	dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line);  in serial_omap_enable_ms()
295 static void serial_omap_stop_tx(struct uart_port *port)  in serial_omap_stop_tx()  argument
297 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_stop_tx()
303 	if (port->rs485.flags & SER_RS485_ENABLED) {  in serial_omap_stop_tx()
314 			res = (port->rs485.flags & SER_RS485_RTS_AFTER_SEND) ?  in serial_omap_stop_tx()
317 				if (port->rs485.delay_rts_after_send > 0)  in serial_omap_stop_tx()
319 					port->rs485.delay_rts_after_send);  in serial_omap_stop_tx()
342 	if ((port->rs485.flags & SER_RS485_ENABLED) &&  in serial_omap_stop_tx()
343 	    !(port->rs485.flags & SER_RS485_RX_DURING_TX)) {  in serial_omap_stop_tx()
351 		up->port.read_status_mask |= UART_LSR_DR;  in serial_omap_stop_tx()
359 static void serial_omap_stop_rx(struct uart_port *port)  in serial_omap_stop_rx()  argument
361 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_stop_rx()
365 	up->port.read_status_mask &= ~UART_LSR_DR;  in serial_omap_stop_rx()
373 	struct circ_buf *xmit = &up->port.state->xmit;  in transmit_chars()
376 	if (up->port.x_char) {  in transmit_chars()
377 		serial_out(up, UART_TX, up->port.x_char);  in transmit_chars()
378 		up->port.icount.tx++;  in transmit_chars()
379 		up->port.x_char = 0;  in transmit_chars()
382 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {  in transmit_chars()
383 		serial_omap_stop_tx(&up->port);  in transmit_chars()
386 	count = up->port.fifosize / 4;  in transmit_chars()
390 		up->port.icount.tx++;  in transmit_chars()
396 		uart_write_wakeup(&up->port);  in transmit_chars()
399 		serial_omap_stop_tx(&up->port);  in transmit_chars()
410 static void serial_omap_start_tx(struct uart_port *port)  in serial_omap_start_tx()  argument
412 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_start_tx()
418 	if (port->rs485.flags & SER_RS485_ENABLED) {  in serial_omap_start_tx()
424 		res = (port->rs485.flags & SER_RS485_RTS_ON_SEND) ? 1 : 0;  in serial_omap_start_tx()
427 			if (port->rs485.delay_rts_before_send > 0)  in serial_omap_start_tx()
428 				mdelay(port->rs485.delay_rts_before_send);  in serial_omap_start_tx()
432 	if ((port->rs485.flags & SER_RS485_ENABLED) &&  in serial_omap_start_tx()
433 	    !(port->rs485.flags & SER_RS485_RX_DURING_TX))  in serial_omap_start_tx()
434 		serial_omap_stop_rx(port);  in serial_omap_start_tx()
441 static void serial_omap_throttle(struct uart_port *port)  in serial_omap_throttle()  argument
443 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_throttle()
447 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_throttle()
450 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_throttle()
455 static void serial_omap_unthrottle(struct uart_port *port)  in serial_omap_unthrottle()  argument
457 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_unthrottle()
461 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_unthrottle()
464 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_unthrottle()
480 	    up->port.state != NULL) {  in check_modem_status()
482 			up->port.icount.rng++;  in check_modem_status()
484 			up->port.icount.dsr++;  in check_modem_status()
487 				(&up->port, status & UART_MSR_DCD);  in check_modem_status()
490 				(&up->port, status & UART_MSR_CTS);  in check_modem_status()
491 		wake_up_interruptible(&up->port.state->port.delta_msr_wait);  in check_modem_status()
505 	up->port.icount.rx++;  in serial_omap_rlsi()
511 		up->port.icount.brk++;  in serial_omap_rlsi()
518 		if (uart_handle_break(&up->port))  in serial_omap_rlsi()
525 		up->port.icount.parity++;  in serial_omap_rlsi()
530 		up->port.icount.frame++;  in serial_omap_rlsi()
534 		up->port.icount.overrun++;  in serial_omap_rlsi()
537 	if (up->port.line == up->port.cons->index) {  in serial_omap_rlsi()
542 	uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag);  in serial_omap_rlsi()
555 	up->port.icount.rx++;  in serial_omap_rdi()
557 	if (uart_handle_sysrq_char(&up->port, ch))  in serial_omap_rdi()
560 	uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);  in serial_omap_rdi()
576 	spin_lock(&up->port.lock);  in serial_omap_irq()
615 	spin_unlock(&up->port.lock);  in serial_omap_irq()
617 	tty_flip_buffer_push(&up->port.state->port);  in serial_omap_irq()
626 static unsigned int serial_omap_tx_empty(struct uart_port *port)  in serial_omap_tx_empty()  argument
628 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_tx_empty()
633 	dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line);  in serial_omap_tx_empty()
634 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_tx_empty()
636 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_tx_empty()
642 static unsigned int serial_omap_get_mctrl(struct uart_port *port)  in serial_omap_get_mctrl()  argument
644 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_get_mctrl()
653 	dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line);  in serial_omap_get_mctrl()
666 static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)  in serial_omap_set_mctrl()  argument
668 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_set_mctrl()
671 	dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line);  in serial_omap_set_mctrl()
693 	if ((mctrl & TIOCM_RTS) && (port->status & UPSTAT_AUTORTS))  in serial_omap_set_mctrl()
704 static void serial_omap_break_ctl(struct uart_port *port, int break_state)  in serial_omap_break_ctl()  argument
706 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_break_ctl()
709 	dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line);  in serial_omap_break_ctl()
711 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_break_ctl()
717 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_break_ctl()
722 static int serial_omap_startup(struct uart_port *port)  in serial_omap_startup()  argument
724 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_startup()
731 	retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags,  in serial_omap_startup()
740 			free_irq(up->port.irq, up);  in serial_omap_startup()
745 	dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);  in serial_omap_startup()
767 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_startup()
771 	up->port.mctrl |= TIOCM_OUT2;  in serial_omap_startup()
772 	serial_omap_set_mctrl(&up->port, up->port.mctrl);  in serial_omap_startup()
773 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_startup()
797 static void serial_omap_shutdown(struct uart_port *port)  in serial_omap_shutdown()  argument
799 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_shutdown()
802 	dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line);  in serial_omap_shutdown()
811 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_shutdown()
812 	up->port.mctrl &= ~TIOCM_OUT2;  in serial_omap_shutdown()
813 	serial_omap_set_mctrl(&up->port, up->port.mctrl);  in serial_omap_shutdown()
814 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_shutdown()
830 	free_irq(up->port.irq, up);  in serial_omap_shutdown()
843 serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,  in serial_omap_set_termios()  argument
846 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_set_termios()
880 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/13);  in serial_omap_set_termios()
881 	quot = serial_omap_get_divisor(port, baud);  in serial_omap_set_termios()
884 	up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8);  in serial_omap_set_termios()
900 	spin_lock_irqsave(&up->port.lock, flags);  in serial_omap_set_termios()
905 	uart_update_timeout(port, termios->c_cflag, baud);  in serial_omap_set_termios()
907 	up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;  in serial_omap_set_termios()
909 		up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;  in serial_omap_set_termios()
911 		up->port.read_status_mask |= UART_LSR_BI;  in serial_omap_set_termios()
916 	up->port.ignore_status_mask = 0;  in serial_omap_set_termios()
918 		up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;  in serial_omap_set_termios()
920 		up->port.ignore_status_mask |= UART_LSR_BI;  in serial_omap_set_termios()
926 			up->port.ignore_status_mask |= UART_LSR_OE;  in serial_omap_set_termios()
933 		up->port.ignore_status_mask |= UART_LSR_DR;  in serial_omap_set_termios()
939 	if (UART_ENABLE_MS(&up->port, termios->c_cflag))  in serial_omap_set_termios()
1023 	if (!serial_omap_baud_is_mode16(port, baud))  in serial_omap_set_termios()
1047 	up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF);  in serial_omap_set_termios()
1049 	if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) {  in serial_omap_set_termios()
1051 		up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS;  in serial_omap_set_termios()
1058 	if (up->port.flags & UPF_SOFT_FLOW) {  in serial_omap_set_termios()
1076 			up->port.status |= UPSTAT_AUTOXOFF;  in serial_omap_set_termios()
1096 	serial_omap_set_mctrl(&up->port, up->port.mctrl);  in serial_omap_set_termios()
1098 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_omap_set_termios()
1101 	dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line);  in serial_omap_set_termios()
1105 serial_omap_pm(struct uart_port *port, unsigned int state,  in serial_omap_pm()  argument
1108 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_pm()
1111 	dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line);  in serial_omap_pm()
1128 static void serial_omap_release_port(struct uart_port *port)  in serial_omap_release_port()  argument
1130 	dev_dbg(port->dev, "serial_omap_release_port+\n");  in serial_omap_release_port()
1133 static int serial_omap_request_port(struct uart_port *port)  in serial_omap_request_port()  argument
1135 	dev_dbg(port->dev, "serial_omap_request_port+\n");  in serial_omap_request_port()
1139 static void serial_omap_config_port(struct uart_port *port, int flags)  in serial_omap_config_port()  argument
1141 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_config_port()
1143 	dev_dbg(up->port.dev, "serial_omap_config_port+%d\n",  in serial_omap_config_port()
1144 							up->port.line);  in serial_omap_config_port()
1145 	up->port.type = PORT_OMAP;  in serial_omap_config_port()
1146 	up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW;  in serial_omap_config_port()
1150 serial_omap_verify_port(struct uart_port *port, struct serial_struct *ser)  in serial_omap_verify_port()  argument
1153 	dev_dbg(port->dev, "serial_omap_verify_port+\n");  in serial_omap_verify_port()
1158 serial_omap_type(struct uart_port *port)  in serial_omap_type()  argument
1160 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_type()
1162 	dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line);  in serial_omap_type()
1185 	if (up->port.flags & UPF_CONS_FLOW) {  in wait_for_xmitr()
1201 static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch)  in serial_omap_poll_put_char()  argument
1203 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_poll_put_char()
1212 static int serial_omap_poll_get_char(struct uart_port *port)  in serial_omap_poll_get_char()  argument
1214 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_poll_get_char()
1241 static void serial_omap_console_putchar(struct uart_port *port, int ch)  in serial_omap_console_putchar()  argument
1243 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_console_putchar()
1261 	if (up->port.sysrq)  in serial_omap_console_write()
1264 		locked = spin_trylock(&up->port.lock);  in serial_omap_console_write()
1266 		spin_lock(&up->port.lock);  in serial_omap_console_write()
1274 	uart_console_write(&up->port, s, count, serial_omap_console_putchar);  in serial_omap_console_write()
1295 		spin_unlock(&up->port.lock);  in serial_omap_console_write()
1315 	return uart_set_options(&up->port, co, baud, parity, bits, flow);  in serial_omap_console_setup()
1330 	serial_omap_console_ports[up->port.line] = up;  in serial_omap_add_console_port()
1346 serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)  in serial_omap_config_rs485()  argument
1348 	struct uart_omap_port *up = to_uart_omap_port(port);  in serial_omap_config_rs485()
1364 	port->rs485 = *rs485;  in serial_omap_config_rs485()
1372 		val = (port->rs485.flags & SER_RS485_ENABLED) ?  in serial_omap_config_rs485()
1374 		val = (port->rs485.flags & val) ? 1 : 0;  in serial_omap_config_rs485()
1377 		port->rs485.flags &= ~SER_RS485_ENABLED;  in serial_omap_config_rs485()
1386 	if (!(port->rs485.flags & SER_RS485_ENABLED) &&  in serial_omap_config_rs485()
1453 	uart_suspend_port(&serial_omap_reg, &up->port);  in serial_omap_suspend()
1471 	uart_resume_port(&serial_omap_reg, &up->port);  in serial_omap_resume()
1485 	mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift));  in omap_serial_fill_features_erratas()
1551 	struct serial_rs485 *rs485conf = &up->port.rs485;  in serial_omap_probe_rs485()
1632 	up->port.dev = &pdev->dev;  in serial_omap_probe()
1633 	up->port.type = PORT_OMAP;  in serial_omap_probe()
1634 	up->port.iotype = UPIO_MEM;  in serial_omap_probe()
1635 	up->port.irq = uartirq;  in serial_omap_probe()
1636 	up->port.regshift = 2;  in serial_omap_probe()
1637 	up->port.fifosize = 64;  in serial_omap_probe()
1638 	up->port.ops = &serial_omap_pops;  in serial_omap_probe()
1650 	up->port.line = ret;  in serial_omap_probe()
1652 	if (up->port.line >= OMAP_MAX_HSUART_PORTS) {  in serial_omap_probe()
1653 		dev_err(&pdev->dev, "uart ID %d >  MAX %d.\n", up->port.line,  in serial_omap_probe()
1661 		dev_info(up->port.dev, "no wakeirq for uart%d\n",  in serial_omap_probe()
1662 			 up->port.line);  in serial_omap_probe()
1668 	sprintf(up->name, "OMAP UART%d", up->port.line);  in serial_omap_probe()
1669 	up->port.mapbase = mem->start;  in serial_omap_probe()
1670 	up->port.membase = base;  in serial_omap_probe()
1671 	up->port.flags = omap_up_info->flags;  in serial_omap_probe()
1672 	up->port.uartclk = omap_up_info->uartclk;  in serial_omap_probe()
1673 	up->port.rs485_config = serial_omap_config_rs485;  in serial_omap_probe()
1674 	if (!up->port.uartclk) {  in serial_omap_probe()
1675 		up->port.uartclk = DEFAULT_CLK_SPEED;  in serial_omap_probe()
1703 	ui[up->port.line] = up;  in serial_omap_probe()
1706 	ret = uart_add_one_port(&serial_omap_reg, &up->port);  in serial_omap_probe()
1730 	uart_remove_one_port(&serial_omap_reg, &up->port);  in serial_omap_remove()
1816 	    uart_console(&up->port))  in serial_omap_runtime_suspend()