Lines Matching full:up
55 static inline unsigned int serial_in(struct uart_pxa_port *up, int offset) in serial_in() argument
58 return readl(up->port.membase + offset); in serial_in()
61 static inline void serial_out(struct uart_pxa_port *up, int offset, int value) in serial_out() argument
64 writel(value, up->port.membase + offset); in serial_out()
69 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_enable_ms() local
71 up->ier |= UART_IER_MSI; in serial_pxa_enable_ms()
72 serial_out(up, UART_IER, up->ier); in serial_pxa_enable_ms()
77 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_stop_tx() local
79 if (up->ier & UART_IER_THRI) { in serial_pxa_stop_tx()
80 up->ier &= ~UART_IER_THRI; in serial_pxa_stop_tx()
81 serial_out(up, UART_IER, up->ier); in serial_pxa_stop_tx()
87 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_stop_rx() local
89 up->ier &= ~UART_IER_RLSI; in serial_pxa_stop_rx()
90 up->port.read_status_mask &= ~UART_LSR_DR; in serial_pxa_stop_rx()
91 serial_out(up, UART_IER, up->ier); in serial_pxa_stop_rx()
94 static inline void receive_chars(struct uart_pxa_port *up, int *status) in receive_chars() argument
107 up->ier &= ~UART_IER_RTOIE; in receive_chars()
108 serial_out(up, UART_IER, up->ier); in receive_chars()
110 ch = serial_in(up, UART_RX); in receive_chars()
112 up->port.icount.rx++; in receive_chars()
121 up->port.icount.brk++; in receive_chars()
128 if (uart_handle_break(&up->port)) in receive_chars()
131 up->port.icount.parity++; in receive_chars()
133 up->port.icount.frame++; in receive_chars()
135 up->port.icount.overrun++; in receive_chars()
140 *status &= up->port.read_status_mask; in receive_chars()
143 if (up->port.line == up->port.cons->index) { in receive_chars()
145 *status |= up->lsr_break_flag; in receive_chars()
146 up->lsr_break_flag = 0; in receive_chars()
157 if (uart_handle_sysrq_char(&up->port, ch)) in receive_chars()
160 uart_insert_char(&up->port, *status, UART_LSR_OE, ch, flag); in receive_chars()
163 *status = serial_in(up, UART_LSR); in receive_chars()
165 tty_flip_buffer_push(&up->port.state->port); in receive_chars()
174 up->ier |= UART_IER_RTOIE; in receive_chars()
175 serial_out(up, UART_IER, up->ier); in receive_chars()
178 static void transmit_chars(struct uart_pxa_port *up) in transmit_chars() argument
180 struct circ_buf *xmit = &up->port.state->xmit; in transmit_chars()
183 if (up->port.x_char) { in transmit_chars()
184 serial_out(up, UART_TX, up->port.x_char); in transmit_chars()
185 up->port.icount.tx++; in transmit_chars()
186 up->port.x_char = 0; in transmit_chars()
189 if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { in transmit_chars()
190 serial_pxa_stop_tx(&up->port); in transmit_chars()
194 count = up->port.fifosize / 2; in transmit_chars()
196 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in transmit_chars()
198 up->port.icount.tx++; in transmit_chars()
204 uart_write_wakeup(&up->port); in transmit_chars()
208 serial_pxa_stop_tx(&up->port); in transmit_chars()
213 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_start_tx() local
215 if (!(up->ier & UART_IER_THRI)) { in serial_pxa_start_tx()
216 up->ier |= UART_IER_THRI; in serial_pxa_start_tx()
217 serial_out(up, UART_IER, up->ier); in serial_pxa_start_tx()
221 /* should hold up->port.lock */
222 static inline void check_modem_status(struct uart_pxa_port *up) in check_modem_status() argument
226 status = serial_in(up, UART_MSR); in check_modem_status()
232 up->port.icount.rng++; in check_modem_status()
234 up->port.icount.dsr++; in check_modem_status()
236 uart_handle_dcd_change(&up->port, status & UART_MSR_DCD); in check_modem_status()
238 uart_handle_cts_change(&up->port, status & UART_MSR_CTS); in check_modem_status()
240 wake_up_interruptible(&up->port.state->port.delta_msr_wait); in check_modem_status()
248 struct uart_pxa_port *up = dev_id; in serial_pxa_irq() local
251 iir = serial_in(up, UART_IIR); in serial_pxa_irq()
254 spin_lock(&up->port.lock); in serial_pxa_irq()
255 lsr = serial_in(up, UART_LSR); in serial_pxa_irq()
257 receive_chars(up, &lsr); in serial_pxa_irq()
258 check_modem_status(up); in serial_pxa_irq()
260 transmit_chars(up); in serial_pxa_irq()
261 spin_unlock(&up->port.lock); in serial_pxa_irq()
267 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_tx_empty() local
271 spin_lock_irqsave(&up->port.lock, flags); in serial_pxa_tx_empty()
272 ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; in serial_pxa_tx_empty()
273 spin_unlock_irqrestore(&up->port.lock, flags); in serial_pxa_tx_empty()
280 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_get_mctrl() local
284 status = serial_in(up, UART_MSR); in serial_pxa_get_mctrl()
300 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_set_mctrl() local
314 mcr |= up->mcr; in serial_pxa_set_mctrl()
316 serial_out(up, UART_MCR, mcr); in serial_pxa_set_mctrl()
321 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_break_ctl() local
324 spin_lock_irqsave(&up->port.lock, flags); in serial_pxa_break_ctl()
326 up->lcr |= UART_LCR_SBC; in serial_pxa_break_ctl()
328 up->lcr &= ~UART_LCR_SBC; in serial_pxa_break_ctl()
329 serial_out(up, UART_LCR, up->lcr); in serial_pxa_break_ctl()
330 spin_unlock_irqrestore(&up->port.lock, flags); in serial_pxa_break_ctl()
335 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_startup() local
340 up->mcr |= UART_MCR_AFE; in serial_pxa_startup()
342 up->mcr = 0; in serial_pxa_startup()
344 up->port.uartclk = clk_get_rate(up->clk); in serial_pxa_startup()
349 retval = request_irq(up->port.irq, serial_pxa_irq, 0, up->name, up); in serial_pxa_startup()
357 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in serial_pxa_startup()
358 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in serial_pxa_startup()
360 serial_out(up, UART_FCR, 0); in serial_pxa_startup()
365 (void) serial_in(up, UART_LSR); in serial_pxa_startup()
366 (void) serial_in(up, UART_RX); in serial_pxa_startup()
367 (void) serial_in(up, UART_IIR); in serial_pxa_startup()
368 (void) serial_in(up, UART_MSR); in serial_pxa_startup()
373 serial_out(up, UART_LCR, UART_LCR_WLEN8); in serial_pxa_startup()
375 spin_lock_irqsave(&up->port.lock, flags); in serial_pxa_startup()
376 up->port.mctrl |= TIOCM_OUT2; in serial_pxa_startup()
377 serial_pxa_set_mctrl(&up->port, up->port.mctrl); in serial_pxa_startup()
378 spin_unlock_irqrestore(&up->port.lock, flags); in serial_pxa_startup()
385 up->ier = UART_IER_RLSI | UART_IER_RDI | UART_IER_RTOIE | UART_IER_UUE; in serial_pxa_startup()
386 serial_out(up, UART_IER, up->ier); in serial_pxa_startup()
391 (void) serial_in(up, UART_LSR); in serial_pxa_startup()
392 (void) serial_in(up, UART_RX); in serial_pxa_startup()
393 (void) serial_in(up, UART_IIR); in serial_pxa_startup()
394 (void) serial_in(up, UART_MSR); in serial_pxa_startup()
401 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_shutdown() local
404 free_irq(up->port.irq, up); in serial_pxa_shutdown()
409 up->ier = 0; in serial_pxa_shutdown()
410 serial_out(up, UART_IER, 0); in serial_pxa_shutdown()
412 spin_lock_irqsave(&up->port.lock, flags); in serial_pxa_shutdown()
413 up->port.mctrl &= ~TIOCM_OUT2; in serial_pxa_shutdown()
414 serial_pxa_set_mctrl(&up->port, up->port.mctrl); in serial_pxa_shutdown()
415 spin_unlock_irqrestore(&up->port.lock, flags); in serial_pxa_shutdown()
420 serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC); in serial_pxa_shutdown()
421 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in serial_pxa_shutdown()
424 serial_out(up, UART_FCR, 0); in serial_pxa_shutdown()
431 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_set_termios() local
466 if ((up->port.uartclk / quot) < (2400 * 16)) in serial_pxa_set_termios()
468 else if ((up->port.uartclk / quot) < (230400 * 16)) in serial_pxa_set_termios()
477 spin_lock_irqsave(&up->port.lock, flags); in serial_pxa_set_termios()
483 up->ier |= UART_IER_UUE; in serial_pxa_set_termios()
490 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in serial_pxa_set_termios()
492 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in serial_pxa_set_termios()
494 up->port.read_status_mask |= UART_LSR_BI; in serial_pxa_set_termios()
499 up->port.ignore_status_mask = 0; in serial_pxa_set_termios()
501 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in serial_pxa_set_termios()
503 up->port.ignore_status_mask |= UART_LSR_BI; in serial_pxa_set_termios()
509 up->port.ignore_status_mask |= UART_LSR_OE; in serial_pxa_set_termios()
516 up->port.ignore_status_mask |= UART_LSR_DR; in serial_pxa_set_termios()
521 up->ier &= ~UART_IER_MSI; in serial_pxa_set_termios()
522 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial_pxa_set_termios()
523 up->ier |= UART_IER_MSI; in serial_pxa_set_termios()
525 serial_out(up, UART_IER, up->ier); in serial_pxa_set_termios()
528 up->mcr |= UART_MCR_AFE; in serial_pxa_set_termios()
530 up->mcr &= ~UART_MCR_AFE; in serial_pxa_set_termios()
532 serial_out(up, UART_LCR, cval | UART_LCR_DLAB); /* set DLAB */ in serial_pxa_set_termios()
533 serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */ in serial_pxa_set_termios()
539 dll = serial_in(up, UART_DLL); in serial_pxa_set_termios()
542 serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */ in serial_pxa_set_termios()
543 serial_out(up, UART_LCR, cval); /* reset DLAB */ in serial_pxa_set_termios()
544 up->lcr = cval; /* Save LCR */ in serial_pxa_set_termios()
545 serial_pxa_set_mctrl(&up->port, up->port.mctrl); in serial_pxa_set_termios()
546 serial_out(up, UART_FCR, fcr); in serial_pxa_set_termios()
547 spin_unlock_irqrestore(&up->port.lock, flags); in serial_pxa_set_termios()
554 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_pm() local
557 clk_prepare_enable(up->clk); in serial_pxa_pm()
559 clk_disable_unprepare(up->clk); in serial_pxa_pm()
573 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_config_port() local
574 up->port.type = PORT_PXA; in serial_pxa_config_port()
587 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_type() local
588 return up->name; in serial_pxa_type()
601 static void wait_for_xmitr(struct uart_pxa_port *up) in wait_for_xmitr() argument
605 /* Wait up to 10ms for the character(s) to be sent. */ in wait_for_xmitr()
607 status = serial_in(up, UART_LSR); in wait_for_xmitr()
610 up->lsr_break_flag = UART_LSR_BI; in wait_for_xmitr()
617 /* Wait up to 1s for flow control if necessary */ in wait_for_xmitr()
618 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
621 ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0)) in wait_for_xmitr()
628 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_console_putchar() local
630 wait_for_xmitr(up); in serial_pxa_console_putchar()
631 serial_out(up, UART_TX, ch); in serial_pxa_console_putchar()
643 struct uart_pxa_port *up = serial_pxa_ports[co->index]; in serial_pxa_console_write() local
648 clk_enable(up->clk); in serial_pxa_console_write()
650 if (up->port.sysrq) in serial_pxa_console_write()
653 locked = spin_trylock(&up->port.lock); in serial_pxa_console_write()
655 spin_lock(&up->port.lock); in serial_pxa_console_write()
660 ier = serial_in(up, UART_IER); in serial_pxa_console_write()
661 serial_out(up, UART_IER, UART_IER_UUE); in serial_pxa_console_write()
663 uart_console_write(&up->port, s, count, serial_pxa_console_putchar); in serial_pxa_console_write()
669 wait_for_xmitr(up); in serial_pxa_console_write()
670 serial_out(up, UART_IER, ier); in serial_pxa_console_write()
673 spin_unlock(&up->port.lock); in serial_pxa_console_write()
675 clk_disable(up->clk); in serial_pxa_console_write()
687 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_get_poll_char() local
688 unsigned char lsr = serial_in(up, UART_LSR); in serial_pxa_get_poll_char()
691 lsr = serial_in(up, UART_LSR); in serial_pxa_get_poll_char()
693 return serial_in(up, UART_RX); in serial_pxa_get_poll_char()
701 struct uart_pxa_port *up = (struct uart_pxa_port *)port; in serial_pxa_put_poll_char() local
706 ier = serial_in(up, UART_IER); in serial_pxa_put_poll_char()
707 serial_out(up, UART_IER, UART_IER_UUE); in serial_pxa_put_poll_char()
709 wait_for_xmitr(up); in serial_pxa_put_poll_char()
713 serial_out(up, UART_TX, c); in serial_pxa_put_poll_char()
719 wait_for_xmitr(up); in serial_pxa_put_poll_char()
720 serial_out(up, UART_IER, ier); in serial_pxa_put_poll_char()
728 struct uart_pxa_port *up; in serial_pxa_console_setup() local
736 up = serial_pxa_ports[co->index]; in serial_pxa_console_setup()
737 if (!up) in serial_pxa_console_setup()
743 return uart_set_options(&up->port, co, baud, parity, bits, flow); in serial_pxa_console_setup()