69 static inline int serial_in(struct pnx8xxx_port *sport, int offset)  in serial_in()  argument
71 	return (__raw_readl(sport->port.membase + offset));  in serial_in()
74 static inline void serial_out(struct pnx8xxx_port *sport, int offset, int value)  in serial_out()  argument
76 	__raw_writel(value, sport->port.membase + offset);  in serial_out()
82 static void pnx8xxx_mctrl_check(struct pnx8xxx_port *sport)  in pnx8xxx_mctrl_check()  argument
86 	status = sport->port.ops->get_mctrl(&sport->port);  in pnx8xxx_mctrl_check()
87 	changed = status ^ sport->old_status;  in pnx8xxx_mctrl_check()
92 	sport->old_status = status;  in pnx8xxx_mctrl_check()
95 		sport->port.icount.rng++;  in pnx8xxx_mctrl_check()
97 		sport->port.icount.dsr++;  in pnx8xxx_mctrl_check()
99 		uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);  in pnx8xxx_mctrl_check()
101 		uart_handle_cts_change(&sport->port, status & TIOCM_CTS);  in pnx8xxx_mctrl_check()
103 	wake_up_interruptible(&sport->port.state->port.delta_msr_wait);  in pnx8xxx_mctrl_check()
112 	struct pnx8xxx_port *sport = (struct pnx8xxx_port *)data;  in pnx8xxx_timeout()  local
115 	if (sport->port.state) {  in pnx8xxx_timeout()
116 		spin_lock_irqsave(&sport->port.lock, flags);  in pnx8xxx_timeout()
117 		pnx8xxx_mctrl_check(sport);  in pnx8xxx_timeout()
118 		spin_unlock_irqrestore(&sport->port.lock, flags);  in pnx8xxx_timeout()
120 		mod_timer(&sport->timer, jiffies + MCTRL_TIMEOUT);  in pnx8xxx_timeout()
129 	struct pnx8xxx_port *sport =  in pnx8xxx_stop_tx()  local
134 	ien = serial_in(sport, PNX8XXX_IEN);  in pnx8xxx_stop_tx()
135 	serial_out(sport, PNX8XXX_IEN, ien & ~PNX8XXX_UART_INT_ALLTX);  in pnx8xxx_stop_tx()
138 	serial_out(sport, PNX8XXX_ICLR, PNX8XXX_UART_INT_ALLTX);  in pnx8xxx_stop_tx()
146 	struct pnx8xxx_port *sport =  in pnx8xxx_start_tx()  local
151 	serial_out(sport, PNX8XXX_ICLR, PNX8XXX_UART_INT_ALLTX);  in pnx8xxx_start_tx()
154 	ien = serial_in(sport, PNX8XXX_IEN);  in pnx8xxx_start_tx()
155 	serial_out(sport, PNX8XXX_IEN, ien | PNX8XXX_UART_INT_ALLTX);  in pnx8xxx_start_tx()
163 	struct pnx8xxx_port *sport =  in pnx8xxx_stop_rx()  local
168 	ien = serial_in(sport, PNX8XXX_IEN);  in pnx8xxx_stop_rx()
169 	serial_out(sport, PNX8XXX_IEN, ien & ~PNX8XXX_UART_INT_ALLRX);  in pnx8xxx_stop_rx()
172 	serial_out(sport, PNX8XXX_ICLR, PNX8XXX_UART_INT_ALLRX);  in pnx8xxx_stop_rx()
180 	struct pnx8xxx_port *sport =  in pnx8xxx_enable_ms()  local
183 	mod_timer(&sport->timer, jiffies);  in pnx8xxx_enable_ms()
186 static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport)  in pnx8xxx_rx_chars()  argument
190 	status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) |  in pnx8xxx_rx_chars()
191 		 ISTAT_TO_SM(serial_in(sport, PNX8XXX_ISTAT));  in pnx8xxx_rx_chars()
193 		ch = serial_in(sport, PNX8XXX_FIFO) & 0xff;  in pnx8xxx_rx_chars()
195 		sport->port.icount.rx++;  in pnx8xxx_rx_chars()
210 				sport->port.icount.brk++;  in pnx8xxx_rx_chars()
211 				if (uart_handle_break(&sport->port))  in pnx8xxx_rx_chars()
214 				sport->port.icount.parity++;  in pnx8xxx_rx_chars()
216 				sport->port.icount.frame++;  in pnx8xxx_rx_chars()
218 				sport->port.icount.overrun++;  in pnx8xxx_rx_chars()
220 			status &= sport->port.read_status_mask;  in pnx8xxx_rx_chars()
228 			sport->port.sysrq = 0;  in pnx8xxx_rx_chars()
232 		if (uart_handle_sysrq_char(&sport->port, ch))  in pnx8xxx_rx_chars()
235 		uart_insert_char(&sport->port, status,  in pnx8xxx_rx_chars()
239 		serial_out(sport, PNX8XXX_LCR, serial_in(sport, PNX8XXX_LCR) |  in pnx8xxx_rx_chars()
241 		status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) |  in pnx8xxx_rx_chars()
242 			 ISTAT_TO_SM(serial_in(sport, PNX8XXX_ISTAT));  in pnx8xxx_rx_chars()
245 	spin_unlock(&sport->port.lock);  in pnx8xxx_rx_chars()
246 	tty_flip_buffer_push(&sport->port.state->port);  in pnx8xxx_rx_chars()
247 	spin_lock(&sport->port.lock);  in pnx8xxx_rx_chars()
250 static void pnx8xxx_tx_chars(struct pnx8xxx_port *sport)  in pnx8xxx_tx_chars()  argument
252 	struct circ_buf *xmit = &sport->port.state->xmit;  in pnx8xxx_tx_chars()
254 	if (sport->port.x_char) {  in pnx8xxx_tx_chars()
255 		serial_out(sport, PNX8XXX_FIFO, sport->port.x_char);  in pnx8xxx_tx_chars()
256 		sport->port.icount.tx++;  in pnx8xxx_tx_chars()
257 		sport->port.x_char = 0;  in pnx8xxx_tx_chars()
265 	pnx8xxx_mctrl_check(sport);  in pnx8xxx_tx_chars()
267 	if (uart_circ_empty(xmit) || uart_tx_stopped(&sport->port)) {  in pnx8xxx_tx_chars()
268 		pnx8xxx_stop_tx(&sport->port);  in pnx8xxx_tx_chars()
275 	while (((serial_in(sport, PNX8XXX_FIFO) &  in pnx8xxx_tx_chars()
277 		serial_out(sport, PNX8XXX_FIFO, xmit->buf[xmit->tail]);  in pnx8xxx_tx_chars()
279 		sport->port.icount.tx++;  in pnx8xxx_tx_chars()
285 		uart_write_wakeup(&sport->port);  in pnx8xxx_tx_chars()
288 		pnx8xxx_stop_tx(&sport->port);  in pnx8xxx_tx_chars()
293 	struct pnx8xxx_port *sport = dev_id;  in pnx8xxx_int()  local
296 	spin_lock(&sport->port.lock);  in pnx8xxx_int()
298 	status  = serial_in(sport, PNX8XXX_ISTAT) & serial_in(sport, PNX8XXX_IEN);  in pnx8xxx_int()
302 		pnx8xxx_rx_chars(sport);  in pnx8xxx_int()
306 		pnx8xxx_tx_chars(sport);  in pnx8xxx_int()
309 	serial_out(sport, PNX8XXX_ICLR, status);  in pnx8xxx_int()
311 	spin_unlock(&sport->port.lock);  in pnx8xxx_int()
320 	struct pnx8xxx_port *sport =  in pnx8xxx_tx_empty()  local
323 	return serial_in(sport, PNX8XXX_FIFO) & PNX8XXX_UART_FIFO_TXFIFO_STA ? 0 : TIOCSER_TEMT;  in pnx8xxx_tx_empty()
328 	struct pnx8xxx_port *sport =  in pnx8xxx_get_mctrl()  local
335 	msr = serial_in(sport, PNX8XXX_MCR);  in pnx8xxx_get_mctrl()
346 	struct pnx8xxx_port *sport = (struct pnx8xxx_port *)port;  in pnx8xxx_set_mctrl()
356 	struct pnx8xxx_port *sport =  in pnx8xxx_break_ctl()  local
361 	spin_lock_irqsave(&sport->port.lock, flags);  in pnx8xxx_break_ctl()
362 	lcr = serial_in(sport, PNX8XXX_LCR);  in pnx8xxx_break_ctl()
367 	serial_out(sport, PNX8XXX_LCR, lcr);  in pnx8xxx_break_ctl()
368 	spin_unlock_irqrestore(&sport->port.lock, flags);  in pnx8xxx_break_ctl()
373 	struct pnx8xxx_port *sport =  in pnx8xxx_startup()  local
380 	retval = request_irq(sport->port.irq, pnx8xxx_int, 0,  in pnx8xxx_startup()
381 			     "pnx8xxx-uart", sport);  in pnx8xxx_startup()
389 	serial_out(sport, PNX8XXX_ICLR, PNX8XXX_UART_INT_ALLRX |  in pnx8xxx_startup()
392 	serial_out(sport, PNX8XXX_IEN, serial_in(sport, PNX8XXX_IEN) |  in pnx8xxx_startup()
399 	spin_lock_irq(&sport->port.lock);  in pnx8xxx_startup()
400 	pnx8xxx_enable_ms(&sport->port);  in pnx8xxx_startup()
401 	spin_unlock_irq(&sport->port.lock);  in pnx8xxx_startup()
408 	struct pnx8xxx_port *sport =  in pnx8xxx_shutdown()  local
415 	del_timer_sync(&sport->timer);  in pnx8xxx_shutdown()
420 	serial_out(sport, PNX8XXX_IEN, 0);  in pnx8xxx_shutdown()
425 	lcr = serial_in(sport, PNX8XXX_LCR);  in pnx8xxx_shutdown()
428 	serial_out(sport, PNX8XXX_LCR, lcr);  in pnx8xxx_shutdown()
433 	serial_out(sport, PNX8XXX_ICLR, PNX8XXX_UART_INT_ALLRX |  in pnx8xxx_shutdown()
439 	free_irq(sport->port.irq, sport);  in pnx8xxx_shutdown()
446 	struct pnx8xxx_port *sport =  in pnx8xxx_set_termios()  local
481 	spin_lock_irqsave(&sport->port.lock, flags);  in pnx8xxx_set_termios()
483 	sport->port.read_status_mask = ISTAT_TO_SM(PNX8XXX_UART_INT_RXOVRN) |  in pnx8xxx_set_termios()
487 		sport->port.read_status_mask |=  in pnx8xxx_set_termios()
491 		sport->port.read_status_mask |=  in pnx8xxx_set_termios()
497 	sport->port.ignore_status_mask = 0;  in pnx8xxx_set_termios()
499 		sport->port.ignore_status_mask |=  in pnx8xxx_set_termios()
503 		sport->port.ignore_status_mask |=  in pnx8xxx_set_termios()
510 			sport->port.ignore_status_mask |=  in pnx8xxx_set_termios()
518 		sport->port.ignore_status_mask |=  in pnx8xxx_set_termios()
521 	del_timer_sync(&sport->timer);  in pnx8xxx_set_termios()
531 	old_ien = serial_in(sport, PNX8XXX_IEN);  in pnx8xxx_set_termios()
532 	serial_out(sport, PNX8XXX_IEN, old_ien & ~(PNX8XXX_UART_INT_ALLTX |  in pnx8xxx_set_termios()
535 	while (serial_in(sport, PNX8XXX_FIFO) & PNX8XXX_UART_FIFO_TXFIFO_STA)  in pnx8xxx_set_termios()
539 	serial_out(sport, PNX8XXX_IEN, 0);  in pnx8xxx_set_termios()
546 	serial_out(sport, PNX8XXX_LCR, lcr_fcr);  in pnx8xxx_set_termios()
550 	serial_out(sport, PNX8XXX_BAUD, quot);  in pnx8xxx_set_termios()
552 	serial_out(sport, PNX8XXX_ICLR, -1);  in pnx8xxx_set_termios()
554 	serial_out(sport, PNX8XXX_IEN, old_ien);  in pnx8xxx_set_termios()
556 	if (UART_ENABLE_MS(&sport->port, termios->c_cflag))  in pnx8xxx_set_termios()
557 		pnx8xxx_enable_ms(&sport->port);  in pnx8xxx_set_termios()
559 	spin_unlock_irqrestore(&sport->port.lock, flags);  in pnx8xxx_set_termios()
564 	struct pnx8xxx_port *sport =  in pnx8xxx_type()  local
567 	return sport->port.type == PORT_PNX8XXX ? "PNX8XXX" : NULL;  in pnx8xxx_type()
575 	struct pnx8xxx_port *sport =  in pnx8xxx_release_port()  local
578 	release_mem_region(sport->port.mapbase, UART_PORT_SIZE);  in pnx8xxx_release_port()
586 	struct pnx8xxx_port *sport =  in pnx8xxx_request_port()  local
588 	return request_mem_region(sport->port.mapbase, UART_PORT_SIZE,  in pnx8xxx_request_port()
597 	struct pnx8xxx_port *sport =  in pnx8xxx_config_port()  local
601 	    pnx8xxx_request_port(&sport->port) == 0)  in pnx8xxx_config_port()
602 		sport->port.type = PORT_PNX8XXX;  in pnx8xxx_config_port()
613 	struct pnx8xxx_port *sport =  in pnx8xxx_verify_port()  local
619 	if (sport->port.irq != ser->irq)  in pnx8xxx_verify_port()
623 	if (sport->port.uartclk / 16 != ser->baud_base)  in pnx8xxx_verify_port()
625 	if ((void *)sport->port.mapbase != ser->iomem_base)  in pnx8xxx_verify_port()
627 	if (sport->port.iobase != ser->port)  in pnx8xxx_verify_port()
680 	struct pnx8xxx_port *sport =  in pnx8xxx_console_putchar()  local
686 		status = serial_in(sport, PNX8XXX_FIFO);  in pnx8xxx_console_putchar()
688 	serial_out(sport, PNX8XXX_FIFO, ch);  in pnx8xxx_console_putchar()
696 	struct pnx8xxx_port *sport = &pnx8xxx_ports[co->index];  in pnx8xxx_console_write()  local
702 	old_ien = serial_in(sport, PNX8XXX_IEN);  in pnx8xxx_console_write()
703 	serial_out(sport, PNX8XXX_IEN, old_ien & ~(PNX8XXX_UART_INT_ALLTX |  in pnx8xxx_console_write()
706 	uart_console_write(&sport->port, s, count, pnx8xxx_console_putchar);  in pnx8xxx_console_write()
714 		status = serial_in(sport, PNX8XXX_FIFO);  in pnx8xxx_console_write()
718 	serial_out(sport, PNX8XXX_ICLR, PNX8XXX_UART_INT_TX |  in pnx8xxx_console_write()
721 	serial_out(sport, PNX8XXX_IEN, old_ien);  in pnx8xxx_console_write()
727 	struct pnx8xxx_port *sport;  in pnx8xxx_console_setup()  local
740 	sport = &pnx8xxx_ports[co->index];  in pnx8xxx_console_setup()
745 	return uart_set_options(&sport->port, co, baud, parity, bits, flow);  in pnx8xxx_console_setup()
784 	struct pnx8xxx_port *sport = platform_get_drvdata(pdev);  in pnx8xxx_serial_suspend()  local
786 	return uart_suspend_port(&pnx8xxx_reg, &sport->port);  in pnx8xxx_serial_suspend()
791 	struct pnx8xxx_port *sport = platform_get_drvdata(pdev);  in pnx8xxx_serial_resume()  local
793 	return uart_resume_port(&pnx8xxx_reg, &sport->port);  in pnx8xxx_serial_resume()
821 	struct pnx8xxx_port *sport = platform_get_drvdata(pdev);  in pnx8xxx_serial_remove()  local
823 	if (sport)  in pnx8xxx_serial_remove()
824 		uart_remove_one_port(&pnx8xxx_reg, &sport->port);  in pnx8xxx_serial_remove()