60 static inline unsigned int serial_in(struct uart_pxa_port *up, int offset)  in serial_in()  argument
63 	return readl(up->port.membase + offset);  in serial_in()
66 static inline void serial_out(struct uart_pxa_port *up, int offset, int value)  in serial_out()  argument
69 	writel(value, up->port.membase + offset);  in serial_out()
74 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_enable_ms()  local
76 	up->ier |= UART_IER_MSI;  in serial_pxa_enable_ms()
77 	serial_out(up, UART_IER, up->ier);  in serial_pxa_enable_ms()
82 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_stop_tx()  local
84 	if (up->ier & UART_IER_THRI) {  in serial_pxa_stop_tx()
85 		up->ier &= ~UART_IER_THRI;  in serial_pxa_stop_tx()
86 		serial_out(up, UART_IER, up->ier);  in serial_pxa_stop_tx()
92 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_stop_rx()  local
94 	up->ier &= ~UART_IER_RLSI;  in serial_pxa_stop_rx()
95 	up->port.read_status_mask &= ~UART_LSR_DR;  in serial_pxa_stop_rx()
96 	serial_out(up, UART_IER, up->ier);  in serial_pxa_stop_rx()
99 static inline void receive_chars(struct uart_pxa_port *up, int *status)  in receive_chars()  argument
112 		up->ier &= ~UART_IER_RTOIE;  in receive_chars()
113 		serial_out(up, UART_IER, up->ier);  in receive_chars()
115 		ch = serial_in(up, UART_RX);  in receive_chars()
117 		up->port.icount.rx++;  in receive_chars()
126 				up->port.icount.brk++;  in receive_chars()
133 				if (uart_handle_break(&up->port))  in receive_chars()
136 				up->port.icount.parity++;  in receive_chars()
138 				up->port.icount.frame++;  in receive_chars()
140 				up->port.icount.overrun++;  in receive_chars()
145 			*status &= up->port.read_status_mask;  in receive_chars()
148 			if (up->port.line == up->port.cons->index) {  in receive_chars()
150 				*status |= up->lsr_break_flag;  in receive_chars()
151 				up->lsr_break_flag = 0;  in receive_chars()
162 		if (uart_handle_sysrq_char(&up->port, ch))  in receive_chars()
165 		uart_insert_char(&up->port, *status, UART_LSR_OE, ch, flag);  in receive_chars()
168 		*status = serial_in(up, UART_LSR);  in receive_chars()
170 	tty_flip_buffer_push(&up->port.state->port);  in receive_chars()
179 	up->ier |= UART_IER_RTOIE;  in receive_chars()
180 	serial_out(up, UART_IER, up->ier);  in receive_chars()
183 static void transmit_chars(struct uart_pxa_port *up)  in transmit_chars()  argument
185 	struct circ_buf *xmit = &up->port.state->xmit;  in transmit_chars()
188 	if (up->port.x_char) {  in transmit_chars()
189 		serial_out(up, UART_TX, up->port.x_char);  in transmit_chars()
190 		up->port.icount.tx++;  in transmit_chars()
191 		up->port.x_char = 0;  in transmit_chars()
194 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {  in transmit_chars()
195 		serial_pxa_stop_tx(&up->port);  in transmit_chars()
199 	count = up->port.fifosize / 2;  in transmit_chars()
201 		serial_out(up, UART_TX, xmit->buf[xmit->tail]);  in transmit_chars()
203 		up->port.icount.tx++;  in transmit_chars()
209 		uart_write_wakeup(&up->port);  in transmit_chars()
213 		serial_pxa_stop_tx(&up->port);  in transmit_chars()
218 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_start_tx()  local
220 	if (!(up->ier & UART_IER_THRI)) {  in serial_pxa_start_tx()
221 		up->ier |= UART_IER_THRI;  in serial_pxa_start_tx()
222 		serial_out(up, UART_IER, up->ier);  in serial_pxa_start_tx()
227 static inline void check_modem_status(struct uart_pxa_port *up)  in check_modem_status()  argument
231 	status = serial_in(up, UART_MSR);  in check_modem_status()
237 		up->port.icount.rng++;  in check_modem_status()
239 		up->port.icount.dsr++;  in check_modem_status()
241 		uart_handle_dcd_change(&up->port, status & UART_MSR_DCD);  in check_modem_status()
243 		uart_handle_cts_change(&up->port, status & UART_MSR_CTS);  in check_modem_status()
245 	wake_up_interruptible(&up->port.state->port.delta_msr_wait);  in check_modem_status()
253 	struct uart_pxa_port *up = dev_id;  in serial_pxa_irq()  local
256 	iir = serial_in(up, UART_IIR);  in serial_pxa_irq()
259 	spin_lock(&up->port.lock);  in serial_pxa_irq()
260 	lsr = serial_in(up, UART_LSR);  in serial_pxa_irq()
262 		receive_chars(up, &lsr);  in serial_pxa_irq()
263 	check_modem_status(up);  in serial_pxa_irq()
265 		transmit_chars(up);  in serial_pxa_irq()
266 	spin_unlock(&up->port.lock);  in serial_pxa_irq()
272 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_tx_empty()  local
276 	spin_lock_irqsave(&up->port.lock, flags);  in serial_pxa_tx_empty()
277 	ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;  in serial_pxa_tx_empty()
278 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_pxa_tx_empty()
285 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_get_mctrl()  local
289 	status = serial_in(up, UART_MSR);  in serial_pxa_get_mctrl()
305 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_set_mctrl()  local
319 	mcr |= up->mcr;  in serial_pxa_set_mctrl()
321 	serial_out(up, UART_MCR, mcr);  in serial_pxa_set_mctrl()
326 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_break_ctl()  local
329 	spin_lock_irqsave(&up->port.lock, flags);  in serial_pxa_break_ctl()
331 		up->lcr |= UART_LCR_SBC;  in serial_pxa_break_ctl()
333 		up->lcr &= ~UART_LCR_SBC;  in serial_pxa_break_ctl()
334 	serial_out(up, UART_LCR, up->lcr);  in serial_pxa_break_ctl()
335 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_pxa_break_ctl()
340 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_startup()  local
345 		up->mcr |= UART_MCR_AFE;  in serial_pxa_startup()
347 		up->mcr = 0;  in serial_pxa_startup()
349 	up->port.uartclk = clk_get_rate(up->clk);  in serial_pxa_startup()
354 	retval = request_irq(up->port.irq, serial_pxa_irq, 0, up->name, up);  in serial_pxa_startup()
362 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO);  in serial_pxa_startup()
363 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |  in serial_pxa_startup()
365 	serial_out(up, UART_FCR, 0);  in serial_pxa_startup()
370 	(void) serial_in(up, UART_LSR);  in serial_pxa_startup()
371 	(void) serial_in(up, UART_RX);  in serial_pxa_startup()
372 	(void) serial_in(up, UART_IIR);  in serial_pxa_startup()
373 	(void) serial_in(up, UART_MSR);  in serial_pxa_startup()
378 	serial_out(up, UART_LCR, UART_LCR_WLEN8);  in serial_pxa_startup()
380 	spin_lock_irqsave(&up->port.lock, flags);  in serial_pxa_startup()
381 	up->port.mctrl |= TIOCM_OUT2;  in serial_pxa_startup()
382 	serial_pxa_set_mctrl(&up->port, up->port.mctrl);  in serial_pxa_startup()
383 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_pxa_startup()
390 	up->ier = UART_IER_RLSI | UART_IER_RDI | UART_IER_RTOIE | UART_IER_UUE;  in serial_pxa_startup()
391 	serial_out(up, UART_IER, up->ier);  in serial_pxa_startup()
396 	(void) serial_in(up, UART_LSR);  in serial_pxa_startup()
397 	(void) serial_in(up, UART_RX);  in serial_pxa_startup()
398 	(void) serial_in(up, UART_IIR);  in serial_pxa_startup()
399 	(void) serial_in(up, UART_MSR);  in serial_pxa_startup()
406 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_shutdown()  local
409 	free_irq(up->port.irq, up);  in serial_pxa_shutdown()
414 	up->ier = 0;  in serial_pxa_shutdown()
415 	serial_out(up, UART_IER, 0);  in serial_pxa_shutdown()
417 	spin_lock_irqsave(&up->port.lock, flags);  in serial_pxa_shutdown()
418 	up->port.mctrl &= ~TIOCM_OUT2;  in serial_pxa_shutdown()
419 	serial_pxa_set_mctrl(&up->port, up->port.mctrl);  in serial_pxa_shutdown()
420 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_pxa_shutdown()
425 	serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC);  in serial_pxa_shutdown()
426 	serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO |  in serial_pxa_shutdown()
429 	serial_out(up, UART_FCR, 0);  in serial_pxa_shutdown()
436 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_set_termios()  local
471 	if ((up->port.uartclk / quot) < (2400 * 16))  in serial_pxa_set_termios()
473 	else if ((up->port.uartclk / quot) < (230400 * 16))  in serial_pxa_set_termios()
482 	spin_lock_irqsave(&up->port.lock, flags);  in serial_pxa_set_termios()
488 	up->ier |= UART_IER_UUE;  in serial_pxa_set_termios()
495 	up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;  in serial_pxa_set_termios()
497 		up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;  in serial_pxa_set_termios()
499 		up->port.read_status_mask |= UART_LSR_BI;  in serial_pxa_set_termios()
504 	up->port.ignore_status_mask = 0;  in serial_pxa_set_termios()
506 		up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;  in serial_pxa_set_termios()
508 		up->port.ignore_status_mask |= UART_LSR_BI;  in serial_pxa_set_termios()
514 			up->port.ignore_status_mask |= UART_LSR_OE;  in serial_pxa_set_termios()
521 		up->port.ignore_status_mask |= UART_LSR_DR;  in serial_pxa_set_termios()
526 	up->ier &= ~UART_IER_MSI;  in serial_pxa_set_termios()
527 	if (UART_ENABLE_MS(&up->port, termios->c_cflag))  in serial_pxa_set_termios()
528 		up->ier |= UART_IER_MSI;  in serial_pxa_set_termios()
530 	serial_out(up, UART_IER, up->ier);  in serial_pxa_set_termios()
533 		up->mcr |= UART_MCR_AFE;  in serial_pxa_set_termios()
535 		up->mcr &= ~UART_MCR_AFE;  in serial_pxa_set_termios()
537 	serial_out(up, UART_LCR, cval | UART_LCR_DLAB);	/* set DLAB */  in serial_pxa_set_termios()
538 	serial_out(up, UART_DLL, quot & 0xff);		/* LS of divisor */  in serial_pxa_set_termios()
544 	dll = serial_in(up, UART_DLL);  in serial_pxa_set_termios()
547 	serial_out(up, UART_DLM, quot >> 8);		/* MS of divisor */  in serial_pxa_set_termios()
548 	serial_out(up, UART_LCR, cval);			/* reset DLAB */  in serial_pxa_set_termios()
549 	up->lcr = cval;					/* Save LCR */  in serial_pxa_set_termios()
550 	serial_pxa_set_mctrl(&up->port, up->port.mctrl);  in serial_pxa_set_termios()
551 	serial_out(up, UART_FCR, fcr);  in serial_pxa_set_termios()
552 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial_pxa_set_termios()
559 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_pm()  local
562 		clk_prepare_enable(up->clk);  in serial_pxa_pm()
564 		clk_disable_unprepare(up->clk);  in serial_pxa_pm()
578 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_config_port()  local
579 	up->port.type = PORT_PXA;  in serial_pxa_config_port()
592 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_type()  local
593 	return up->name;  in serial_pxa_type()
606 static inline void wait_for_xmitr(struct uart_pxa_port *up)  in wait_for_xmitr()  argument
612 		status = serial_in(up, UART_LSR);  in wait_for_xmitr()
615 			up->lsr_break_flag = UART_LSR_BI;  in wait_for_xmitr()
623 	if (up->port.flags & UPF_CONS_FLOW) {  in wait_for_xmitr()
626 		       ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))  in wait_for_xmitr()
633 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_console_putchar()  local
635 	wait_for_xmitr(up);  in serial_pxa_console_putchar()
636 	serial_out(up, UART_TX, ch);  in serial_pxa_console_putchar()
648 	struct uart_pxa_port *up = serial_pxa_ports[co->index];  in serial_pxa_console_write()  local
653 	clk_enable(up->clk);  in serial_pxa_console_write()
655 	if (up->port.sysrq)  in serial_pxa_console_write()
658 		locked = spin_trylock(&up->port.lock);  in serial_pxa_console_write()
660 		spin_lock(&up->port.lock);  in serial_pxa_console_write()
665 	ier = serial_in(up, UART_IER);  in serial_pxa_console_write()
666 	serial_out(up, UART_IER, UART_IER_UUE);  in serial_pxa_console_write()
668 	uart_console_write(&up->port, s, count, serial_pxa_console_putchar);  in serial_pxa_console_write()
674 	wait_for_xmitr(up);  in serial_pxa_console_write()
675 	serial_out(up, UART_IER, ier);  in serial_pxa_console_write()
678 		spin_unlock(&up->port.lock);  in serial_pxa_console_write()
680 	clk_disable(up->clk);  in serial_pxa_console_write()
692 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_get_poll_char()  local
693 	unsigned char lsr = serial_in(up, UART_LSR);  in serial_pxa_get_poll_char()
696 		lsr = serial_in(up, UART_LSR);  in serial_pxa_get_poll_char()
698 	return serial_in(up, UART_RX);  in serial_pxa_get_poll_char()
706 	struct uart_pxa_port *up = (struct uart_pxa_port *)port;  in serial_pxa_put_poll_char()  local
711 	ier = serial_in(up, UART_IER);  in serial_pxa_put_poll_char()
712 	serial_out(up, UART_IER, UART_IER_UUE);  in serial_pxa_put_poll_char()
714 	wait_for_xmitr(up);  in serial_pxa_put_poll_char()
718 	serial_out(up, UART_TX, c);  in serial_pxa_put_poll_char()
724 	wait_for_xmitr(up);  in serial_pxa_put_poll_char()
725 	serial_out(up, UART_IER, ier);  in serial_pxa_put_poll_char()
733 	struct uart_pxa_port *up;  in serial_pxa_console_setup()  local
741 	up = serial_pxa_ports[co->index];  in serial_pxa_console_setup()
742 	if (!up)  in serial_pxa_console_setup()
748 	return uart_set_options(&up->port, co, baud, parity, bits, flow);  in serial_pxa_console_setup()