75 static void bfin_serial_reset_irda(struct uart_port *port);
79 static unsigned int bfin_serial_get_mctrl(struct uart_port *port)  in bfin_serial_get_mctrl()  argument
81 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_get_mctrl()
92 static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)  in bfin_serial_set_mctrl()  argument
94 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_set_mctrl()
111 	struct uart_port *uport = &uart->port;  in bfin_serial_mctrl_cts_int()
132 static unsigned int bfin_serial_get_mctrl(struct uart_port *port)  in bfin_serial_get_mctrl()  argument
137 static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)  in bfin_serial_set_mctrl()  argument
145 static void bfin_serial_stop_tx(struct uart_port *port)  in bfin_serial_stop_tx()  argument
147 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_stop_tx()
149 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_stop_tx()
158 	uart->port.icount.tx += uart->tx_count;  in bfin_serial_stop_tx()
173 static void bfin_serial_start_tx(struct uart_port *port)  in bfin_serial_start_tx()  argument
175 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_start_tx()
176 	struct tty_struct *tty = uart->port.state->port.tty;  in bfin_serial_start_tx()
183 		bfin_serial_reset_irda(port);  in bfin_serial_start_tx()
197 static void bfin_serial_stop_rx(struct uart_port *port)  in bfin_serial_stop_rx()  argument
199 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_stop_rx()
222 	uart->port.icount.rx++;  in bfin_serial_rx_chars()
226 	if (kgdb_connected && kgdboc_port_line == uart->port.line  in bfin_serial_rx_chars()
233 	if (!uart->port.state)  in bfin_serial_rx_chars()
285 		uart->port.icount.brk++;  in bfin_serial_rx_chars()
286 		if (uart_handle_break(&uart->port))  in bfin_serial_rx_chars()
291 		uart->port.icount.parity++;  in bfin_serial_rx_chars()
293 		uart->port.icount.overrun++;  in bfin_serial_rx_chars()
295 		uart->port.icount.frame++;  in bfin_serial_rx_chars()
297 	status &= uart->port.read_status_mask;  in bfin_serial_rx_chars()
308 	if (uart_handle_sysrq_char(&uart->port, ch))  in bfin_serial_rx_chars()
311 	uart_insert_char(&uart->port, status, OE, ch, flg);  in bfin_serial_rx_chars()
314 	tty_flip_buffer_push(&uart->port.state->port);  in bfin_serial_rx_chars()
319 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_tx_chars()
321 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {  in bfin_serial_tx_chars()
335 	if (uart->port.x_char) {  in bfin_serial_tx_chars()
336 		UART_PUT_CHAR(uart, uart->port.x_char);  in bfin_serial_tx_chars()
337 		uart->port.icount.tx++;  in bfin_serial_tx_chars()
338 		uart->port.x_char = 0;  in bfin_serial_tx_chars()
344 		uart->port.icount.tx++;  in bfin_serial_tx_chars()
348 		uart_write_wakeup(&uart->port);  in bfin_serial_tx_chars()
365 	spin_lock(&uart->port.lock);  in bfin_serial_tx_int()
368 	spin_unlock(&uart->port.lock);  in bfin_serial_tx_int()
377 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_dma_tx_chars()
381 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {  in bfin_serial_dma_tx_chars()
387 	if (uart->port.x_char) {  in bfin_serial_dma_tx_chars()
388 		UART_PUT_CHAR(uart, uart->port.x_char);  in bfin_serial_dma_tx_chars()
389 		uart->port.icount.tx++;  in bfin_serial_dma_tx_chars()
390 		uart->port.x_char = 0;  in bfin_serial_dma_tx_chars()
420 	uart->port.icount.rx +=  in bfin_serial_dma_rx_chars()
425 		uart->port.icount.brk++;  in bfin_serial_dma_rx_chars()
426 		if (uart_handle_break(&uart->port))  in bfin_serial_dma_rx_chars()
431 		uart->port.icount.parity++;  in bfin_serial_dma_rx_chars()
433 		uart->port.icount.overrun++;  in bfin_serial_dma_rx_chars()
435 		uart->port.icount.frame++;  in bfin_serial_dma_rx_chars()
437 	status &= uart->port.read_status_mask;  in bfin_serial_dma_rx_chars()
453 		if (!uart_handle_sysrq_char(&uart->port, uart->rx_dma_buf.buf[i]))  in bfin_serial_dma_rx_chars()
454 			uart_insert_char(&uart->port, status, OE,  in bfin_serial_dma_rx_chars()
459 	tty_flip_buffer_push(&uart->port.state->port);  in bfin_serial_dma_rx_chars()
508 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_dma_tx_int()
510 	spin_lock(&uart->port.lock);  in bfin_serial_dma_tx_int()
520 		uart->port.icount.tx += uart->tx_count;  in bfin_serial_dma_tx_int()
525 				uart_write_wakeup(&uart->port);  in bfin_serial_dma_tx_int()
531 	spin_unlock(&uart->port.lock);  in bfin_serial_dma_tx_int()
568 static unsigned int bfin_serial_tx_empty(struct uart_port *port)  in bfin_serial_tx_empty()  argument
570 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_tx_empty()
580 static void bfin_serial_break_ctl(struct uart_port *port, int break_state)  in bfin_serial_break_ctl()  argument
582 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_break_ctl()
592 static int bfin_serial_startup(struct uart_port *port)  in bfin_serial_startup()  argument
594 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_startup()
637 	if (kgdboc_port_line == uart->port.line && kgdboc_break_enabled)  in bfin_serial_startup()
726 			dev_info(port->dev, "Unable to attach BlackFin UART Modem Status interrupt.\n");  in bfin_serial_startup()
739 static void bfin_serial_shutdown(struct uart_port *port)  in bfin_serial_shutdown()  argument
741 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_shutdown()
752 	switch (uart->port.irq) {  in bfin_serial_shutdown()
782 bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,  in bfin_serial_set_termios()  argument
785 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_set_termios()
833 	spin_lock_irqsave(&uart->port.lock, flags);  in bfin_serial_set_termios()
835 	port->read_status_mask = OE;  in bfin_serial_set_termios()
837 		port->read_status_mask |= (FE | PE);  in bfin_serial_set_termios()
839 		port->read_status_mask |= BI;  in bfin_serial_set_termios()
844 	port->ignore_status_mask = 0;  in bfin_serial_set_termios()
846 		port->ignore_status_mask |= FE | PE;  in bfin_serial_set_termios()
848 		port->ignore_status_mask |= BI;  in bfin_serial_set_termios()
854 			port->ignore_status_mask |= OE;  in bfin_serial_set_termios()
857 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);  in bfin_serial_set_termios()
858 	quot = uart_get_divisor(port, baud);  in bfin_serial_set_termios()
870 			dev_warn(port->dev, "timeout waiting for TX buffer empty\n");  in bfin_serial_set_termios()
895 	uart_update_timeout(port, termios->c_cflag, baud);  in bfin_serial_set_termios()
897 	spin_unlock_irqrestore(&uart->port.lock, flags);  in bfin_serial_set_termios()
900 static const char *bfin_serial_type(struct uart_port *port)  in bfin_serial_type()  argument
902 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_type()
904 	return uart->port.type == PORT_BFIN ? "BFIN-UART" : NULL;  in bfin_serial_type()
910 static void bfin_serial_release_port(struct uart_port *port)  in bfin_serial_release_port()  argument
917 static int bfin_serial_request_port(struct uart_port *port)  in bfin_serial_request_port()  argument
925 static void bfin_serial_config_port(struct uart_port *port, int flags)  in bfin_serial_config_port()  argument
927 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_config_port()
930 	    bfin_serial_request_port(&uart->port) == 0)  in bfin_serial_config_port()
931 		uart->port.type = PORT_BFIN;  in bfin_serial_config_port()
940 bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)  in bfin_serial_verify_port()  argument
949 static void bfin_serial_set_ldisc(struct uart_port *port,  in bfin_serial_set_ldisc()  argument
952 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_set_ldisc()
968 static void bfin_serial_reset_irda(struct uart_port *port)  in bfin_serial_reset_irda()  argument
970 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_reset_irda()
987 static void bfin_serial_poll_put_char(struct uart_port *port, unsigned char chr)  in bfin_serial_poll_put_char()  argument
989 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_poll_put_char()
998 static int bfin_serial_poll_get_char(struct uart_port *port)  in bfin_serial_poll_get_char()  argument
1000 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_poll_get_char()
1078 static void bfin_serial_console_putchar(struct uart_port *port, int ch)  in bfin_serial_console_putchar()  argument
1080 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;  in bfin_serial_console_putchar()
1100 	spin_lock_irqsave(&uart->port.lock, flags);  in bfin_serial_console_write()
1101 	uart_console_write(&uart->port, s, count, bfin_serial_console_putchar);  in bfin_serial_console_write()
1102 	spin_unlock_irqrestore(&uart->port.lock, flags);  in bfin_serial_console_write()
1137 	return uart_set_options(&uart->port, co, baud, parity, bits, flow);  in bfin_serial_console_setup()
1166 	if (bfin_earlyprintk_port.port.line != co->index)  in bfin_earlyprintk_console_write()
1169 	spin_lock_irqsave(&bfin_earlyprintk_port.port.lock, flags);  in bfin_earlyprintk_console_write()
1170 	uart_console_write(&bfin_earlyprintk_port.port, s, count,  in bfin_earlyprintk_console_write()
1172 	spin_unlock_irqrestore(&bfin_earlyprintk_port.port.lock, flags);  in bfin_earlyprintk_console_write()
1205 	return uart_suspend_port(&bfin_serial_reg, &uart->port);  in bfin_serial_suspend()
1212 	return uart_resume_port(&bfin_serial_reg, &uart->port);  in bfin_serial_resume()
1237 		if (!(bfin_earlyprintk_port.port.membase  in bfin_serial_probe()
1238 			&& bfin_earlyprintk_port.port.line == pdev->id)) {  in bfin_serial_probe()
1256 		spin_lock_init(&uart->port.lock);  in bfin_serial_probe()
1257 		uart->port.uartclk   = get_sclk();  in bfin_serial_probe()
1258 		uart->port.fifosize  = BFIN_UART_TX_FIFO_SIZE;  in bfin_serial_probe()
1259 		uart->port.ops       = &bfin_serial_pops;  in bfin_serial_probe()
1260 		uart->port.line      = pdev->id;  in bfin_serial_probe()
1261 		uart->port.iotype    = UPIO_MEM;  in bfin_serial_probe()
1262 		uart->port.flags     = UPF_BOOT_AUTOCONF;  in bfin_serial_probe()
1271 		uart->port.membase = ioremap(res->start, resource_size(res));  in bfin_serial_probe()
1272 		if (!uart->port.membase) {  in bfin_serial_probe()
1277 		uart->port.mapbase = res->start;  in bfin_serial_probe()
1292 		uart->port.irq = uart->rx_irq;  in bfin_serial_probe()
1345 		uart->port.dev = &pdev->dev;  in bfin_serial_probe()
1347 		ret = uart_add_one_port(&bfin_serial_reg, &uart->port);  in bfin_serial_probe()
1357 		iounmap(uart->port.membase);  in bfin_serial_probe()
1375 		uart_remove_one_port(&bfin_serial_reg, &uart->port);  in bfin_serial_remove()
1376 		iounmap(uart->port.membase);  in bfin_serial_remove()
1445 	bfin_earlyprintk_port.port.membase = ioremap(res->start,  in bfin_earlyprintk_probe()
1447 	if (!bfin_earlyprintk_port.port.membase) {  in bfin_earlyprintk_probe()
1452 	bfin_earlyprintk_port.port.mapbase = res->start;  in bfin_earlyprintk_probe()
1453 	bfin_earlyprintk_port.port.line = pdev->id;  in bfin_earlyprintk_probe()
1454 	bfin_earlyprintk_port.port.uartclk = get_sclk();  in bfin_earlyprintk_probe()
1455 	bfin_earlyprintk_port.port.fifosize  = BFIN_UART_TX_FIFO_SIZE;  in bfin_earlyprintk_probe()
1456 	spin_lock_init(&bfin_earlyprintk_port.port.lock);  in bfin_earlyprintk_probe()
1480 struct console __init *bfin_earlyserial_init(unsigned int port,  in bfin_earlyserial_init()  argument
1486 	if (port < 0 || port >= BFIN_UART_NR_PORTS)  in bfin_earlyserial_init()
1493 	snprintf(port_name, 20, DRIVER_NAME ".%d", port);  in bfin_earlyserial_init()
1498 	if (!bfin_earlyprintk_port.port.membase)  in bfin_earlyserial_init()
1509 	bfin_early_serial_console.index = port;  in bfin_earlyserial_init()
1514 	t.c_line = port;  in bfin_earlyserial_init()
1515 	bfin_serial_set_termios(&bfin_earlyprintk_port.port, &t, &t);  in bfin_earlyserial_init()