81 	struct dz_port		dport[DZ_NB_PORT];  member
103 static u16 dz_in(struct dz_port *dport, unsigned offset)  in dz_in()  argument
105 	void __iomem *addr = dport->port.membase + offset;  in dz_in()
110 static void dz_out(struct dz_port *dport, unsigned offset, u16 value)  in dz_out()  argument
112 	void __iomem *addr = dport->port.membase + offset;  in dz_out()
129 	struct dz_port *dport = to_dport(uport);  in dz_stop_tx()  local
130 	u16 tmp, mask = 1 << dport->port.line;  in dz_stop_tx()
132 	tmp = dz_in(dport, DZ_TCR);	/* read the TX flag */  in dz_stop_tx()
134 	dz_out(dport, DZ_TCR, tmp);  in dz_stop_tx()
139 	struct dz_port *dport = to_dport(uport);  in dz_start_tx()  local
140 	u16 tmp, mask = 1 << dport->port.line;  in dz_start_tx()
142 	tmp = dz_in(dport, DZ_TCR);	/* read the TX flag */  in dz_start_tx()
144 	dz_out(dport, DZ_TCR, tmp);  in dz_start_tx()
149 	struct dz_port *dport = to_dport(uport);  in dz_stop_rx()  local
151 	dport->cflag &= ~DZ_RXENAB;  in dz_stop_rx()
152 	dz_out(dport, DZ_LPR, dport->cflag);  in dz_stop_rx()
185 	struct dz_port *dport = &mux->dport[0];  in dz_receive_chars()  local
192 	while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) {  in dz_receive_chars()
193 		dport = &mux->dport[LINE(status)];  in dz_receive_chars()
194 		uport = &dport->port;  in dz_receive_chars()
246 			tty_flip_buffer_push(&mux->dport[i].port.state->port);  in dz_receive_chars()
258 	struct dz_port *dport = &mux->dport[0];  in dz_transmit_chars()  local
263 	status = dz_in(dport, DZ_CSR);  in dz_transmit_chars()
264 	dport = &mux->dport[LINE(status)];  in dz_transmit_chars()
265 	xmit = &dport->port.state->xmit;  in dz_transmit_chars()
267 	if (dport->port.x_char) {		/* XON/XOFF chars */  in dz_transmit_chars()
268 		dz_out(dport, DZ_TDR, dport->port.x_char);  in dz_transmit_chars()
269 		dport->port.icount.tx++;  in dz_transmit_chars()
270 		dport->port.x_char = 0;  in dz_transmit_chars()
274 	if (uart_circ_empty(xmit) || uart_tx_stopped(&dport->port)) {  in dz_transmit_chars()
275 		spin_lock(&dport->port.lock);  in dz_transmit_chars()
276 		dz_stop_tx(&dport->port);  in dz_transmit_chars()
277 		spin_unlock(&dport->port.lock);  in dz_transmit_chars()
287 	dz_out(dport, DZ_TDR, tmp);  in dz_transmit_chars()
288 	dport->port.icount.tx++;  in dz_transmit_chars()
291 		uart_write_wakeup(&dport->port);  in dz_transmit_chars()
295 		spin_lock(&dport->port.lock);  in dz_transmit_chars()
296 		dz_stop_tx(&dport->port);  in dz_transmit_chars()
297 		spin_unlock(&dport->port.lock);  in dz_transmit_chars()
309 static inline void check_modem_status(struct dz_port *dport)  in check_modem_status()  argument
319 	if (dport->port.line != DZ_MODEM)  in check_modem_status()
322 	status = dz_in(dport, DZ_MSR);  in check_modem_status()
326 		dport->port.icount.dsr++;  in check_modem_status()
340 	struct dz_port *dport = &mux->dport[0];  in dz_interrupt()  local
344 	status = dz_in(dport, DZ_CSR);  in dz_interrupt()
366 	struct dz_port *dport = to_dport(uport);  in dz_get_mctrl()  local
369 	if (dport->port.line == DZ_MODEM) {  in dz_get_mctrl()
370 		if (dz_in(dport, DZ_MSR) & DZ_MODEM_DSR)  in dz_get_mctrl()
382 	struct dz_port *dport = to_dport(uport);  in dz_set_mctrl()  local
385 	if (dport->port.line == DZ_MODEM) {  in dz_set_mctrl()
386 		tmp = dz_in(dport, DZ_TCR);  in dz_set_mctrl()
391 		dz_out(dport, DZ_TCR, tmp);  in dz_set_mctrl()
404 	struct dz_port *dport = to_dport(uport);  in dz_startup()  local
405 	struct dz_mux *mux = dport->mux;  in dz_startup()
415 	ret = request_irq(dport->port.irq, dz_interrupt,  in dz_startup()
419 		printk(KERN_ERR "dz: Cannot get IRQ %d!\n", dport->port.irq);  in dz_startup()
423 	spin_lock_irqsave(&dport->port.lock, flags);  in dz_startup()
426 	tmp = dz_in(dport, DZ_CSR);  in dz_startup()
428 	dz_out(dport, DZ_CSR, tmp);  in dz_startup()
430 	spin_unlock_irqrestore(&dport->port.lock, flags);  in dz_startup()
445 	struct dz_port *dport = to_dport(uport);  in dz_shutdown()  local
446 	struct dz_mux *mux = dport->mux;  in dz_shutdown()
451 	spin_lock_irqsave(&dport->port.lock, flags);  in dz_shutdown()
452 	dz_stop_tx(&dport->port);  in dz_shutdown()
453 	spin_unlock_irqrestore(&dport->port.lock, flags);  in dz_shutdown()
458 		tmp = dz_in(dport, DZ_CSR);  in dz_shutdown()
460 		dz_out(dport, DZ_CSR, tmp);  in dz_shutdown()
462 		free_irq(dport->port.irq, mux);  in dz_shutdown()
480 	struct dz_port *dport = to_dport(uport);  in dz_tx_empty()  local
481 	unsigned short tmp, mask = 1 << dport->port.line;  in dz_tx_empty()
483 	tmp = dz_in(dport, DZ_TCR);  in dz_tx_empty()
495 	struct dz_port *dport = to_dport(uport);  in dz_break_ctl()  local
497 	unsigned short tmp, mask = 1 << dport->port.line;  in dz_break_ctl()
500 	tmp = dz_in(dport, DZ_TCR);  in dz_break_ctl()
505 	dz_out(dport, DZ_TCR, tmp);  in dz_break_ctl()
548 static void dz_reset(struct dz_port *dport)  in dz_reset()  argument
550 	struct dz_mux *mux = dport->mux;  in dz_reset()
555 	dz_out(dport, DZ_CSR, DZ_CLR);  in dz_reset()
556 	while (dz_in(dport, DZ_CSR) & DZ_CLR);  in dz_reset()
560 	dz_out(dport, DZ_CSR, DZ_MSE);  in dz_reset()
568 	struct dz_port *dport = to_dport(uport);  in dz_set_termios()  local
573 	cflag = dport->port.line;  in dz_set_termios()
613 	spin_lock_irqsave(&dport->port.lock, flags);  in dz_set_termios()
617 	dz_out(dport, DZ_LPR, cflag);  in dz_set_termios()
618 	dport->cflag = cflag;  in dz_set_termios()
621 	dport->port.read_status_mask = DZ_OERR;  in dz_set_termios()
623 		dport->port.read_status_mask |= DZ_FERR | DZ_PERR;  in dz_set_termios()
625 		dport->port.read_status_mask |= DZ_BREAK;  in dz_set_termios()
630 		dport->port.ignore_status_mask |= DZ_OERR;  in dz_set_termios()
632 		dport->port.ignore_status_mask |= DZ_FERR | DZ_PERR;  in dz_set_termios()
634 		dport->port.ignore_status_mask |= DZ_BREAK;  in dz_set_termios()
636 	spin_unlock_irqrestore(&dport->port.lock, flags);  in dz_set_termios()
647 	struct dz_port *dport = to_dport(uport);  in dz_pm()  local
650 	spin_lock_irqsave(&dport->port.lock, flags);  in dz_pm()
652 		dz_start_tx(&dport->port);  in dz_pm()
654 		dz_stop_tx(&dport->port);  in dz_pm()
655 	spin_unlock_irqrestore(&dport->port.lock, flags);  in dz_pm()
717 	struct dz_port *dport = to_dport(uport);  in dz_config_port()  local
725 		dz_reset(dport);  in dz_config_port()
778 		struct dz_port *dport = &dz_mux.dport[line];  in dz_init_ports()  local
779 		struct uart_port *uport = &dport->port;  in dz_init_ports()
781 		dport->mux	= &dz_mux;  in dz_init_ports()
810 	struct dz_port *dport = to_dport(uport);  in dz_console_putchar()  local
815 	spin_lock_irqsave(&dport->port.lock, flags);  in dz_console_putchar()
816 	csr = dz_in(dport, DZ_CSR);  in dz_console_putchar()
817 	dz_out(dport, DZ_CSR, csr & ~DZ_TIE);  in dz_console_putchar()
818 	tcr = dz_in(dport, DZ_TCR);  in dz_console_putchar()
819 	tcr |= 1 << dport->port.line;  in dz_console_putchar()
821 	dz_out(dport, DZ_TCR, mask);  in dz_console_putchar()
823 	spin_unlock_irqrestore(&dport->port.lock, flags);  in dz_console_putchar()
826 		trdy = dz_in(dport, DZ_CSR);  in dz_console_putchar()
830 		if (trdy == dport->port.line)  in dz_console_putchar()
833 		dz_out(dport, DZ_TCR, mask);  in dz_console_putchar()
839 		dz_out(dport, DZ_TDR, ch);  in dz_console_putchar()
841 	dz_out(dport, DZ_TCR, tcr);  in dz_console_putchar()
842 	dz_out(dport, DZ_CSR, csr);  in dz_console_putchar()
857 	struct dz_port *dport = &dz_mux.dport[co->index];  in dz_console_print()  local
861 	uart_console_write(&dport->port, str, count, dz_console_putchar);  in dz_console_print()
866 	struct dz_port *dport = &dz_mux.dport[co->index];  in dz_console_setup()  local
867 	struct uart_port *uport = &dport->port;  in dz_console_setup()
878 	spin_lock_init(&dport->port.lock);	/* For dz_pm().  */  in dz_console_setup()
880 	dz_reset(dport);  in dz_console_setup()
886 	return uart_set_options(&dport->port, co, baud, parity, bits, flow);  in dz_console_setup()
943 		uart_add_one_port(&dz_reg, &dz_mux.dport[i].port);  in dz_init()