72 	struct dz_port		dport[DZ_NB_PORT];  member
95 static u16 dz_in(struct dz_port *dport, unsigned offset)  in dz_in()  argument
97 	void __iomem *addr = dport->port.membase + offset;  in dz_in()
102 static void dz_out(struct dz_port *dport, unsigned offset, u16 value)  in dz_out()  argument
104 	void __iomem *addr = dport->port.membase + offset;  in dz_out()
121 	struct dz_port *dport = to_dport(uport);  in dz_stop_tx()  local
122 	u16 tmp, mask = 1 << dport->port.line;  in dz_stop_tx()
124 	tmp = dz_in(dport, DZ_TCR);	/* read the TX flag */  in dz_stop_tx()
126 	dz_out(dport, DZ_TCR, tmp);  in dz_stop_tx()
131 	struct dz_port *dport = to_dport(uport);  in dz_start_tx()  local
132 	u16 tmp, mask = 1 << dport->port.line;  in dz_start_tx()
134 	tmp = dz_in(dport, DZ_TCR);	/* read the TX flag */  in dz_start_tx()
136 	dz_out(dport, DZ_TCR, tmp);  in dz_start_tx()
141 	struct dz_port *dport = to_dport(uport);  in dz_stop_rx()  local
143 	dport->cflag &= ~DZ_RXENAB;  in dz_stop_rx()
144 	dz_out(dport, DZ_LPR, dport->cflag);  in dz_stop_rx()
177 	struct dz_port *dport = &mux->dport[0];  in dz_receive_chars()  local
184 	while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) {  in dz_receive_chars()
185 		dport = &mux->dport[LINE(status)];  in dz_receive_chars()
186 		uport = &dport->port;  in dz_receive_chars()
238 			tty_flip_buffer_push(&mux->dport[i].port.state->port);  in dz_receive_chars()
250 	struct dz_port *dport = &mux->dport[0];  in dz_transmit_chars()  local
255 	status = dz_in(dport, DZ_CSR);  in dz_transmit_chars()
256 	dport = &mux->dport[LINE(status)];  in dz_transmit_chars()
257 	tport = &dport->port.state->port;  in dz_transmit_chars()
259 	if (dport->port.x_char) {		/* XON/XOFF chars */  in dz_transmit_chars()
260 		dz_out(dport, DZ_TDR, dport->port.x_char);  in dz_transmit_chars()
261 		dport->port.icount.tx++;  in dz_transmit_chars()
262 		dport->port.x_char = 0;  in dz_transmit_chars()
266 	if (uart_tx_stopped(&dport->port) ||  in dz_transmit_chars()
267 			!uart_fifo_get(&dport->port, &tmp)) {  in dz_transmit_chars()
268 		uart_port_lock(&dport->port);  in dz_transmit_chars()
269 		dz_stop_tx(&dport->port);  in dz_transmit_chars()
270 		uart_port_unlock(&dport->port);  in dz_transmit_chars()
278 	dz_out(dport, DZ_TDR, tmp);  in dz_transmit_chars()
281 		uart_write_wakeup(&dport->port);  in dz_transmit_chars()
285 		uart_port_lock(&dport->port);  in dz_transmit_chars()
286 		dz_stop_tx(&dport->port);  in dz_transmit_chars()
287 		uart_port_unlock(&dport->port);  in dz_transmit_chars()
299 static inline void check_modem_status(struct dz_port *dport)  in check_modem_status()  argument
309 	if (dport->port.line != DZ_MODEM)  in check_modem_status()
312 	status = dz_in(dport, DZ_MSR);  in check_modem_status()
316 		dport->port.icount.dsr++;  in check_modem_status()
330 	struct dz_port *dport = &mux->dport[0];  in dz_interrupt()  local
334 	status = dz_in(dport, DZ_CSR);  in dz_interrupt()
356 	struct dz_port *dport = to_dport(uport);  in dz_get_mctrl()  local
359 	if (dport->port.line == DZ_MODEM) {  in dz_get_mctrl()
360 		if (dz_in(dport, DZ_MSR) & DZ_MODEM_DSR)  in dz_get_mctrl()
372 	struct dz_port *dport = to_dport(uport);  in dz_set_mctrl()  local
375 	if (dport->port.line == DZ_MODEM) {  in dz_set_mctrl()
376 		tmp = dz_in(dport, DZ_TCR);  in dz_set_mctrl()
381 		dz_out(dport, DZ_TCR, tmp);  in dz_set_mctrl()
394 	struct dz_port *dport = to_dport(uport);  in dz_startup()  local
395 	struct dz_mux *mux = dport->mux;  in dz_startup()
405 	ret = request_irq(dport->port.irq, dz_interrupt,  in dz_startup()
409 		printk(KERN_ERR "dz: Cannot get IRQ %d!\n", dport->port.irq);  in dz_startup()
413 	uart_port_lock_irqsave(&dport->port, &flags);  in dz_startup()
416 	tmp = dz_in(dport, DZ_CSR);  in dz_startup()
418 	dz_out(dport, DZ_CSR, tmp);  in dz_startup()
420 	uart_port_unlock_irqrestore(&dport->port, flags);  in dz_startup()
435 	struct dz_port *dport = to_dport(uport);  in dz_shutdown()  local
436 	struct dz_mux *mux = dport->mux;  in dz_shutdown()
441 	uart_port_lock_irqsave(&dport->port, &flags);  in dz_shutdown()
442 	dz_stop_tx(&dport->port);  in dz_shutdown()
443 	uart_port_unlock_irqrestore(&dport->port, flags);  in dz_shutdown()
448 		tmp = dz_in(dport, DZ_CSR);  in dz_shutdown()
450 		dz_out(dport, DZ_CSR, tmp);  in dz_shutdown()
452 		free_irq(dport->port.irq, mux);  in dz_shutdown()
470 	struct dz_port *dport = to_dport(uport);  in dz_tx_empty()  local
471 	unsigned short tmp, mask = 1 << dport->port.line;  in dz_tx_empty()
473 	tmp = dz_in(dport, DZ_TCR);  in dz_tx_empty()
485 	struct dz_port *dport = to_dport(uport);  in dz_break_ctl()  local
487 	unsigned short tmp, mask = 1 << dport->port.line;  in dz_break_ctl()
490 	tmp = dz_in(dport, DZ_TCR);  in dz_break_ctl()
495 	dz_out(dport, DZ_TCR, tmp);  in dz_break_ctl()
538 static void dz_reset(struct dz_port *dport)  in dz_reset()  argument
540 	struct dz_mux *mux = dport->mux;  in dz_reset()
547 	tcr = dz_in(dport, DZ_TCR);  in dz_reset()
550 	if (dz_in(dport, DZ_CSR) & DZ_MSE) {  in dz_reset()
555 			csr = dz_in(dport, DZ_CSR);  in dz_reset()
559 			dz_out(dport, DZ_TCR, mask);  in dz_reset()
566 	dz_out(dport, DZ_CSR, DZ_CLR);  in dz_reset()
567 	while (dz_in(dport, DZ_CSR) & DZ_CLR);  in dz_reset()
577 		dz_out(dport, DZ_LPR, DZ_B9600 | DZ_CS8 | line);  in dz_reset()
580 	dz_out(dport, DZ_TCR, tcr);  in dz_reset()
583 	dz_out(dport, DZ_CSR, DZ_MSE);  in dz_reset()
591 	struct dz_port *dport = to_dport(uport);  in dz_set_termios()  local
596 	cflag = dport->port.line;  in dz_set_termios()
639 	uart_port_lock_irqsave(&dport->port, &flags);  in dz_set_termios()
643 	dz_out(dport, DZ_LPR, cflag);  in dz_set_termios()
644 	dport->cflag = cflag;  in dz_set_termios()
647 	dport->port.read_status_mask = DZ_OERR;  in dz_set_termios()
649 		dport->port.read_status_mask |= DZ_FERR | DZ_PERR;  in dz_set_termios()
651 		dport->port.read_status_mask |= DZ_BREAK;  in dz_set_termios()
656 		dport->port.ignore_status_mask |= DZ_OERR;  in dz_set_termios()
658 		dport->port.ignore_status_mask |= DZ_FERR | DZ_PERR;  in dz_set_termios()
660 		dport->port.ignore_status_mask |= DZ_BREAK;  in dz_set_termios()
662 	uart_port_unlock_irqrestore(&dport->port, flags);  in dz_set_termios()
721 	struct dz_port *dport = to_dport(uport);  in dz_config_port()  local
729 		dz_reset(dport);  in dz_config_port()
776 		struct dz_port *dport = &dz_mux.dport[line];  in dz_probe()  local
777 		struct uart_port *uport = &dport->port;  in dz_probe()
779 		dport->mux	= &dz_mux;  in dz_probe()
803 		struct dz_port *dport = &dz_mux.dport[line];  in dz_remove()  local
804 		struct uart_port *uport = &dport->port;  in dz_remove()
828 	struct dz_port *dport = to_dport(uport);  in dz_console_putchar()  local
833 	uart_port_lock_irqsave(&dport->port, &flags);  in dz_console_putchar()
834 	csr = dz_in(dport, DZ_CSR);  in dz_console_putchar()
835 	dz_out(dport, DZ_CSR, csr & ~DZ_TIE);  in dz_console_putchar()
836 	tcr = dz_in(dport, DZ_TCR);  in dz_console_putchar()
837 	tcr |= 1 << dport->port.line;  in dz_console_putchar()
839 	dz_out(dport, DZ_TCR, mask);  in dz_console_putchar()
841 	uart_port_unlock_irqrestore(&dport->port, flags);  in dz_console_putchar()
844 		trdy = dz_in(dport, DZ_CSR);  in dz_console_putchar()
848 		if (trdy == dport->port.line)  in dz_console_putchar()
851 		dz_out(dport, DZ_TCR, mask);  in dz_console_putchar()
857 		dz_out(dport, DZ_TDR, ch);  in dz_console_putchar()
859 	dz_out(dport, DZ_TCR, tcr);  in dz_console_putchar()
860 	dz_out(dport, DZ_CSR, csr);  in dz_console_putchar()
875 	struct dz_port *dport = &dz_mux.dport[co->index];  in dz_console_print()  local
879 	uart_console_write(&dport->port, str, count, dz_console_putchar);  in dz_console_print()
884 	struct dz_port *dport = &dz_mux.dport[co->index];  in dz_console_setup()  local
885 	struct uart_port *uport = &dport->port;  in dz_console_setup()
891 	if (!dport->mux)  in dz_console_setup()