Lines Matching full:up
176 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
178 static inline unsigned int serial_in(struct uart_omap_port *up, int offset) in serial_in() argument
180 offset <<= up->port.regshift; in serial_in()
181 return readw(up->port.membase + offset); in serial_in()
184 static inline void serial_out(struct uart_omap_port *up, int offset, int value) in serial_out() argument
186 offset <<= up->port.regshift; in serial_out()
187 writew(value, up->port.membase + offset); in serial_out()
190 static inline void serial_omap_clear_fifos(struct uart_omap_port *up) in serial_omap_clear_fifos() argument
192 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in serial_omap_clear_fifos()
193 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in serial_omap_clear_fifos()
195 serial_out(up, UART_FCR, 0); in serial_omap_clear_fifos()
199 static int serial_omap_get_context_loss_count(struct uart_omap_port *up) in serial_omap_get_context_loss_count() argument
201 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_get_context_loss_count()
206 return pdata->get_context_loss_count(up->dev); in serial_omap_get_context_loss_count()
210 static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable) in serial_omap_enable_wakeup() argument
212 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_enable_wakeup()
217 pdata->enable_wakeup(up->dev, enable); in serial_omap_enable_wakeup()
280 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_enable_ms() local
282 dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line); in serial_omap_enable_ms()
284 pm_runtime_get_sync(up->dev); in serial_omap_enable_ms()
285 up->ier |= UART_IER_MSI; in serial_omap_enable_ms()
286 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ms()
287 pm_runtime_mark_last_busy(up->dev); in serial_omap_enable_ms()
288 pm_runtime_put_autosuspend(up->dev); in serial_omap_enable_ms()
293 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_tx() local
296 pm_runtime_get_sync(up->dev); in serial_omap_stop_tx()
300 if (up->scr & OMAP_UART_SCR_TX_EMPTY) { in serial_omap_stop_tx()
308 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
309 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
312 if (gpio_get_value(up->rts_gpio) != res) { in serial_omap_stop_tx()
316 gpio_set_value(up->rts_gpio, res); in serial_omap_stop_tx()
327 up->scr |= OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
328 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
333 if (up->ier & UART_IER_THRI) { in serial_omap_stop_tx()
334 up->ier &= ~UART_IER_THRI; in serial_omap_stop_tx()
335 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
344 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_RCVR); in serial_omap_stop_tx()
346 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_stop_tx()
347 up->port.read_status_mask |= UART_LSR_DR; in serial_omap_stop_tx()
348 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
351 pm_runtime_mark_last_busy(up->dev); in serial_omap_stop_tx()
352 pm_runtime_put_autosuspend(up->dev); in serial_omap_stop_tx()
357 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_rx() local
359 pm_runtime_get_sync(up->dev); in serial_omap_stop_rx()
360 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_stop_rx()
361 up->port.read_status_mask &= ~UART_LSR_DR; in serial_omap_stop_rx()
362 serial_out(up, UART_IER, up->ier); in serial_omap_stop_rx()
363 pm_runtime_mark_last_busy(up->dev); in serial_omap_stop_rx()
364 pm_runtime_put_autosuspend(up->dev); in serial_omap_stop_rx()
367 static void transmit_chars(struct uart_omap_port *up, unsigned int lsr) in transmit_chars() argument
369 struct circ_buf *xmit = &up->port.state->xmit; in transmit_chars()
372 if (up->port.x_char) { in transmit_chars()
373 serial_out(up, UART_TX, up->port.x_char); in transmit_chars()
374 up->port.icount.tx++; in transmit_chars()
375 up->port.x_char = 0; in transmit_chars()
378 if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { in transmit_chars()
379 serial_omap_stop_tx(&up->port); in transmit_chars()
382 count = up->port.fifosize / 4; in transmit_chars()
384 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in transmit_chars()
386 up->port.icount.tx++; in transmit_chars()
392 uart_write_wakeup(&up->port); in transmit_chars()
395 serial_omap_stop_tx(&up->port); in transmit_chars()
398 static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up) in serial_omap_enable_ier_thri() argument
400 if (!(up->ier & UART_IER_THRI)) { in serial_omap_enable_ier_thri()
401 up->ier |= UART_IER_THRI; in serial_omap_enable_ier_thri()
402 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ier_thri()
408 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_start_tx() local
411 pm_runtime_get_sync(up->dev); in serial_omap_start_tx()
416 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_start_tx()
417 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_start_tx()
421 if (gpio_get_value(up->rts_gpio) != res) { in serial_omap_start_tx()
422 gpio_set_value(up->rts_gpio, res); in serial_omap_start_tx()
432 serial_omap_enable_ier_thri(up); in serial_omap_start_tx()
433 pm_runtime_mark_last_busy(up->dev); in serial_omap_start_tx()
434 pm_runtime_put_autosuspend(up->dev); in serial_omap_start_tx()
439 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_throttle() local
442 pm_runtime_get_sync(up->dev); in serial_omap_throttle()
443 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_throttle()
444 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_throttle()
445 serial_out(up, UART_IER, up->ier); in serial_omap_throttle()
446 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_throttle()
447 pm_runtime_mark_last_busy(up->dev); in serial_omap_throttle()
448 pm_runtime_put_autosuspend(up->dev); in serial_omap_throttle()
453 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_unthrottle() local
456 pm_runtime_get_sync(up->dev); in serial_omap_unthrottle()
457 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_unthrottle()
458 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_unthrottle()
459 serial_out(up, UART_IER, up->ier); in serial_omap_unthrottle()
460 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_unthrottle()
461 pm_runtime_mark_last_busy(up->dev); in serial_omap_unthrottle()
462 pm_runtime_put_autosuspend(up->dev); in serial_omap_unthrottle()
465 static unsigned int check_modem_status(struct uart_omap_port *up) in check_modem_status() argument
469 status = serial_in(up, UART_MSR); in check_modem_status()
470 status |= up->msr_saved_flags; in check_modem_status()
471 up->msr_saved_flags = 0; in check_modem_status()
475 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in check_modem_status()
476 up->port.state != NULL) { in check_modem_status()
478 up->port.icount.rng++; in check_modem_status()
480 up->port.icount.dsr++; in check_modem_status()
483 (&up->port, status & UART_MSR_DCD); in check_modem_status()
486 (&up->port, status & UART_MSR_CTS); in check_modem_status()
487 wake_up_interruptible(&up->port.state->port.delta_msr_wait); in check_modem_status()
493 static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rlsi() argument
499 ch = serial_in(up, UART_RX); in serial_omap_rlsi()
501 up->port.icount.rx++; in serial_omap_rlsi()
507 up->port.icount.brk++; in serial_omap_rlsi()
514 if (uart_handle_break(&up->port)) in serial_omap_rlsi()
521 up->port.icount.parity++; in serial_omap_rlsi()
526 up->port.icount.frame++; in serial_omap_rlsi()
530 up->port.icount.overrun++; in serial_omap_rlsi()
533 if (up->port.line == up->port.cons->index) { in serial_omap_rlsi()
535 lsr |= up->lsr_break_flag; in serial_omap_rlsi()
538 uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag); in serial_omap_rlsi()
541 static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rdi() argument
549 ch = serial_in(up, UART_RX); in serial_omap_rdi()
551 up->port.icount.rx++; in serial_omap_rdi()
553 if (uart_handle_sysrq_char(&up->port, ch)) in serial_omap_rdi()
556 uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag); in serial_omap_rdi()
566 struct uart_omap_port *up = dev_id; in serial_omap_irq() local
572 spin_lock(&up->port.lock); in serial_omap_irq()
573 pm_runtime_get_sync(up->dev); in serial_omap_irq()
576 iir = serial_in(up, UART_IIR); in serial_omap_irq()
581 lsr = serial_in(up, UART_LSR); in serial_omap_irq()
588 check_modem_status(up); in serial_omap_irq()
591 transmit_chars(up, lsr); in serial_omap_irq()
596 serial_omap_rdi(up, lsr); in serial_omap_irq()
599 serial_omap_rlsi(up, lsr); in serial_omap_irq()
611 spin_unlock(&up->port.lock); in serial_omap_irq()
613 tty_flip_buffer_push(&up->port.state->port); in serial_omap_irq()
615 pm_runtime_mark_last_busy(up->dev); in serial_omap_irq()
616 pm_runtime_put_autosuspend(up->dev); in serial_omap_irq()
617 up->port_activity = jiffies; in serial_omap_irq()
624 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_tx_empty() local
628 pm_runtime_get_sync(up->dev); in serial_omap_tx_empty()
629 dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); in serial_omap_tx_empty()
630 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_tx_empty()
631 ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; in serial_omap_tx_empty()
632 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_tx_empty()
633 pm_runtime_mark_last_busy(up->dev); in serial_omap_tx_empty()
634 pm_runtime_put_autosuspend(up->dev); in serial_omap_tx_empty()
640 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_get_mctrl() local
644 pm_runtime_get_sync(up->dev); in serial_omap_get_mctrl()
645 status = check_modem_status(up); in serial_omap_get_mctrl()
646 pm_runtime_mark_last_busy(up->dev); in serial_omap_get_mctrl()
647 pm_runtime_put_autosuspend(up->dev); in serial_omap_get_mctrl()
649 dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); in serial_omap_get_mctrl()
664 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_mctrl() local
667 dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line); in serial_omap_set_mctrl()
679 pm_runtime_get_sync(up->dev); in serial_omap_set_mctrl()
680 old_mcr = serial_in(up, UART_MCR); in serial_omap_set_mctrl()
683 up->mcr = old_mcr | mcr; in serial_omap_set_mctrl()
684 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_mctrl()
687 lcr = serial_in(up, UART_LCR); in serial_omap_set_mctrl()
688 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_mctrl()
690 up->efr |= UART_EFR_RTS; in serial_omap_set_mctrl()
692 up->efr &= ~UART_EFR_RTS; in serial_omap_set_mctrl()
693 serial_out(up, UART_EFR, up->efr); in serial_omap_set_mctrl()
694 serial_out(up, UART_LCR, lcr); in serial_omap_set_mctrl()
696 pm_runtime_mark_last_busy(up->dev); in serial_omap_set_mctrl()
697 pm_runtime_put_autosuspend(up->dev); in serial_omap_set_mctrl()
702 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_break_ctl() local
705 dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); in serial_omap_break_ctl()
706 pm_runtime_get_sync(up->dev); in serial_omap_break_ctl()
707 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_break_ctl()
709 up->lcr |= UART_LCR_SBC; in serial_omap_break_ctl()
711 up->lcr &= ~UART_LCR_SBC; in serial_omap_break_ctl()
712 serial_out(up, UART_LCR, up->lcr); in serial_omap_break_ctl()
713 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_break_ctl()
714 pm_runtime_mark_last_busy(up->dev); in serial_omap_break_ctl()
715 pm_runtime_put_autosuspend(up->dev); in serial_omap_break_ctl()
720 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_startup() local
727 retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags, in serial_omap_startup()
728 up->name, up); in serial_omap_startup()
732 /* Optional wake-up IRQ */ in serial_omap_startup()
733 if (up->wakeirq) { in serial_omap_startup()
734 retval = dev_pm_set_dedicated_wake_irq(up->dev, up->wakeirq); in serial_omap_startup()
736 free_irq(up->port.irq, up); in serial_omap_startup()
741 dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); in serial_omap_startup()
743 pm_runtime_get_sync(up->dev); in serial_omap_startup()
748 serial_omap_clear_fifos(up); in serial_omap_startup()
753 (void) serial_in(up, UART_LSR); in serial_omap_startup()
754 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_startup()
755 (void) serial_in(up, UART_RX); in serial_omap_startup()
756 (void) serial_in(up, UART_IIR); in serial_omap_startup()
757 (void) serial_in(up, UART_MSR); in serial_omap_startup()
762 serial_out(up, UART_LCR, UART_LCR_WLEN8); in serial_omap_startup()
763 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_startup()
767 up->port.mctrl |= TIOCM_OUT2; in serial_omap_startup()
768 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_startup()
769 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_startup()
771 up->msr_saved_flags = 0; in serial_omap_startup()
777 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial_omap_startup()
778 serial_out(up, UART_IER, up->ier); in serial_omap_startup()
780 /* Enable module level wake up */ in serial_omap_startup()
781 up->wer = OMAP_UART_WER_MOD_WKUP; in serial_omap_startup()
782 if (up->features & OMAP_UART_WER_HAS_TX_WAKEUP) in serial_omap_startup()
783 up->wer |= OMAP_UART_TX_WAKEUP_EN; in serial_omap_startup()
785 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_startup()
787 pm_runtime_mark_last_busy(up->dev); in serial_omap_startup()
788 pm_runtime_put_autosuspend(up->dev); in serial_omap_startup()
789 up->port_activity = jiffies; in serial_omap_startup()
795 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_shutdown() local
798 dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); in serial_omap_shutdown()
800 pm_runtime_get_sync(up->dev); in serial_omap_shutdown()
804 up->ier = 0; in serial_omap_shutdown()
805 serial_out(up, UART_IER, 0); in serial_omap_shutdown()
807 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_shutdown()
808 up->port.mctrl &= ~TIOCM_OUT2; in serial_omap_shutdown()
809 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_shutdown()
810 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_shutdown()
815 serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC); in serial_omap_shutdown()
816 serial_omap_clear_fifos(up); in serial_omap_shutdown()
821 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_shutdown()
822 (void) serial_in(up, UART_RX); in serial_omap_shutdown()
824 pm_runtime_mark_last_busy(up->dev); in serial_omap_shutdown()
825 pm_runtime_put_autosuspend(up->dev); in serial_omap_shutdown()
826 free_irq(up->port.irq, up); in serial_omap_shutdown()
827 dev_pm_clear_wake_irq(up->dev); in serial_omap_shutdown()
832 struct uart_omap_port *up = container_of(work, struct uart_omap_port, in serial_omap_uart_qos_work() local
835 pm_qos_update_request(&up->pm_qos_request, up->latency); in serial_omap_uart_qos_work()
842 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_termios() local
880 up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8); in serial_omap_set_termios()
881 up->latency = up->calc_latency; in serial_omap_set_termios()
882 schedule_work(&up->qos_work); in serial_omap_set_termios()
884 up->dll = quot & 0xff; in serial_omap_set_termios()
885 up->dlh = quot >> 8; in serial_omap_set_termios()
886 up->mdr1 = UART_OMAP_MDR1_DISABLE; in serial_omap_set_termios()
888 up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 | in serial_omap_set_termios()
895 pm_runtime_get_sync(up->dev); in serial_omap_set_termios()
896 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_set_termios()
903 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in serial_omap_set_termios()
905 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in serial_omap_set_termios()
907 up->port.read_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
912 up->port.ignore_status_mask = 0; in serial_omap_set_termios()
914 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in serial_omap_set_termios()
916 up->port.ignore_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
922 up->port.ignore_status_mask |= UART_LSR_OE; in serial_omap_set_termios()
929 up->port.ignore_status_mask |= UART_LSR_DR; in serial_omap_set_termios()
934 up->ier &= ~UART_IER_MSI; in serial_omap_set_termios()
935 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial_omap_set_termios()
936 up->ier |= UART_IER_MSI; in serial_omap_set_termios()
937 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
938 serial_out(up, UART_LCR, cval); /* reset DLAB */ in serial_omap_set_termios()
939 up->lcr = cval; in serial_omap_set_termios()
940 up->scr = 0; in serial_omap_set_termios()
948 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
949 serial_out(up, UART_DLL, 0); in serial_omap_set_termios()
950 serial_out(up, UART_DLM, 0); in serial_omap_set_termios()
951 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
953 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
955 up->efr = serial_in(up, UART_EFR) & ~UART_EFR_ECB; in serial_omap_set_termios()
956 up->efr &= ~UART_EFR_SCD; in serial_omap_set_termios()
957 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
959 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
960 up->mcr = serial_in(up, UART_MCR) & ~UART_MCR_TCRTLR; in serial_omap_set_termios()
961 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
964 up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; in serial_omap_set_termios()
978 up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK; in serial_omap_set_termios()
979 up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK; in serial_omap_set_termios()
980 up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 | in serial_omap_set_termios()
983 serial_out(up, UART_FCR, up->fcr); in serial_omap_set_termios()
984 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
986 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_set_termios()
989 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
990 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
991 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
992 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
993 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
997 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
998 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
1000 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
1002 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1003 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1005 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
1006 serial_out(up, UART_IER, 0); in serial_omap_set_termios()
1007 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1009 serial_out(up, UART_DLL, up->dll); /* LS of divisor */ in serial_omap_set_termios()
1010 serial_out(up, UART_DLM, up->dlh); /* MS of divisor */ in serial_omap_set_termios()
1012 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
1013 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
1014 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1016 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1017 serial_out(up, UART_LCR, cval); in serial_omap_set_termios()
1020 up->mdr1 = UART_OMAP_MDR1_13X_MODE; in serial_omap_set_termios()
1022 up->mdr1 = UART_OMAP_MDR1_16X_MODE; in serial_omap_set_termios()
1024 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
1025 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
1027 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
1030 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1033 serial_out(up, UART_XON1, termios->c_cc[VSTART]); in serial_omap_set_termios()
1034 serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); in serial_omap_set_termios()
1037 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1038 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1039 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
1041 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); in serial_omap_set_termios()
1043 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in serial_omap_set_termios()
1045 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { in serial_omap_set_termios()
1047 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in serial_omap_set_termios()
1048 up->efr |= UART_EFR_CTS; in serial_omap_set_termios()
1051 up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); in serial_omap_set_termios()
1054 if (up->port.flags & UPF_SOFT_FLOW) { in serial_omap_set_termios()
1056 up->efr &= OMAP_UART_SW_CLR; in serial_omap_set_termios()
1064 up->efr |= OMAP_UART_SW_RX; in serial_omap_set_termios()
1072 up->port.status |= UPSTAT_AUTOXOFF; in serial_omap_set_termios()
1073 up->efr |= OMAP_UART_SW_TX; in serial_omap_set_termios()
1083 up->mcr |= UART_MCR_XONANY; in serial_omap_set_termios()
1085 up->mcr &= ~UART_MCR_XONANY; in serial_omap_set_termios()
1087 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
1088 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1089 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1090 serial_out(up, UART_LCR, up->lcr); in serial_omap_set_termios()
1092 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_set_termios()
1094 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_set_termios()
1095 pm_runtime_mark_last_busy(up->dev); in serial_omap_set_termios()
1096 pm_runtime_put_autosuspend(up->dev); in serial_omap_set_termios()
1097 dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); in serial_omap_set_termios()
1104 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_pm() local
1107 dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); in serial_omap_pm()
1109 pm_runtime_get_sync(up->dev); in serial_omap_pm()
1110 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1111 efr = serial_in(up, UART_EFR); in serial_omap_pm()
1112 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in serial_omap_pm()
1113 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1115 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in serial_omap_pm()
1116 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1117 serial_out(up, UART_EFR, efr); in serial_omap_pm()
1118 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1120 pm_runtime_mark_last_busy(up->dev); in serial_omap_pm()
1121 pm_runtime_put_autosuspend(up->dev); in serial_omap_pm()
1137 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_port() local
1139 dev_dbg(up->port.dev, "serial_omap_config_port+%d\n", in serial_omap_config_port()
1140 up->port.line); in serial_omap_config_port()
1141 up->port.type = PORT_OMAP; in serial_omap_config_port()
1142 up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW; in serial_omap_config_port()
1156 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_type() local
1158 dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line); in serial_omap_type()
1159 return up->name; in serial_omap_type()
1164 static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) in wait_for_xmitr() argument
1168 /* Wait up to 10ms for the character(s) to be sent. */ in wait_for_xmitr()
1170 status = serial_in(up, UART_LSR); in wait_for_xmitr()
1173 up->lsr_break_flag = UART_LSR_BI; in wait_for_xmitr()
1180 /* Wait up to 1s for flow control if necessary */ in wait_for_xmitr()
1181 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
1184 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
1186 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
1199 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_put_char() local
1201 pm_runtime_get_sync(up->dev); in serial_omap_poll_put_char()
1202 wait_for_xmitr(up); in serial_omap_poll_put_char()
1203 serial_out(up, UART_TX, ch); in serial_omap_poll_put_char()
1204 pm_runtime_mark_last_busy(up->dev); in serial_omap_poll_put_char()
1205 pm_runtime_put_autosuspend(up->dev); in serial_omap_poll_put_char()
1210 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_get_char() local
1213 pm_runtime_get_sync(up->dev); in serial_omap_poll_get_char()
1214 status = serial_in(up, UART_LSR); in serial_omap_poll_get_char()
1220 status = serial_in(up, UART_RX); in serial_omap_poll_get_char()
1223 pm_runtime_mark_last_busy(up->dev); in serial_omap_poll_get_char()
1224 pm_runtime_put_autosuspend(up->dev); in serial_omap_poll_get_char()
1293 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_console_putchar() local
1295 wait_for_xmitr(up); in serial_omap_console_putchar()
1296 serial_out(up, UART_TX, ch); in serial_omap_console_putchar()
1303 struct uart_omap_port *up = serial_omap_console_ports[co->index]; in serial_omap_console_write() local
1308 pm_runtime_get_sync(up->dev); in serial_omap_console_write()
1311 if (up->port.sysrq) in serial_omap_console_write()
1314 locked = spin_trylock(&up->port.lock); in serial_omap_console_write()
1316 spin_lock(&up->port.lock); in serial_omap_console_write()
1321 ier = serial_in(up, UART_IER); in serial_omap_console_write()
1322 serial_out(up, UART_IER, 0); in serial_omap_console_write()
1324 uart_console_write(&up->port, s, count, serial_omap_console_putchar); in serial_omap_console_write()
1330 wait_for_xmitr(up); in serial_omap_console_write()
1331 serial_out(up, UART_IER, ier); in serial_omap_console_write()
1339 if (up->msr_saved_flags) in serial_omap_console_write()
1340 check_modem_status(up); in serial_omap_console_write()
1342 pm_runtime_mark_last_busy(up->dev); in serial_omap_console_write()
1343 pm_runtime_put_autosuspend(up->dev); in serial_omap_console_write()
1345 spin_unlock(&up->port.lock); in serial_omap_console_write()
1352 struct uart_omap_port *up; in serial_omap_console_setup() local
1360 up = serial_omap_console_ports[co->index]; in serial_omap_console_setup()
1365 return uart_set_options(&up->port, co, baud, parity, bits, flow); in serial_omap_console_setup()
1378 static void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1380 serial_omap_console_ports[up->port.line] = up; in serial_omap_add_console_port()
1389 static inline void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1398 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_rs485() local
1402 pm_runtime_get_sync(up->dev); in serial_omap_config_rs485()
1405 mode = up->ier; in serial_omap_config_rs485()
1406 up->ier = 0; in serial_omap_config_rs485()
1407 serial_out(up, UART_IER, 0); in serial_omap_config_rs485()
1420 if (gpio_is_valid(up->rts_gpio)) { in serial_omap_config_rs485()
1425 gpio_set_value(up->rts_gpio, val); in serial_omap_config_rs485()
1430 up->ier = mode; in serial_omap_config_rs485()
1431 serial_out(up, UART_IER, up->ier); in serial_omap_config_rs485()
1437 (up->scr & OMAP_UART_SCR_TX_EMPTY)) { in serial_omap_config_rs485()
1438 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_config_rs485()
1439 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_config_rs485()
1442 pm_runtime_mark_last_busy(up->dev); in serial_omap_config_rs485()
1443 pm_runtime_put_autosuspend(up->dev); in serial_omap_config_rs485()
1485 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_prepare() local
1487 up->is_suspending = true; in serial_omap_prepare()
1494 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_complete() local
1496 up->is_suspending = false; in serial_omap_complete()
1501 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_suspend() local
1503 uart_suspend_port(&serial_omap_reg, &up->port); in serial_omap_suspend()
1504 flush_work(&up->qos_work); in serial_omap_suspend()
1507 serial_omap_enable_wakeup(up, true); in serial_omap_suspend()
1509 serial_omap_enable_wakeup(up, false); in serial_omap_suspend()
1516 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_resume() local
1519 serial_omap_enable_wakeup(up, false); in serial_omap_resume()
1521 uart_resume_port(&serial_omap_reg, &up->port); in serial_omap_resume()
1530 static void omap_serial_fill_features_erratas(struct uart_omap_port *up) in omap_serial_fill_features_erratas() argument
1535 mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift)); in omap_serial_fill_features_erratas()
1555 dev_warn(up->dev, in omap_serial_fill_features_erratas()
1557 up->name); in omap_serial_fill_features_erratas()
1568 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1572 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1574 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1577 up->errata |= UART_ERRATA_i202_MDR1_ACCESS; in omap_serial_fill_features_erratas()
1578 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1601 static int serial_omap_probe_rs485(struct uart_omap_port *up, in serial_omap_probe_rs485() argument
1604 struct serial_rs485 *rs485conf = &up->port.rs485; in serial_omap_probe_rs485()
1608 up->rts_gpio = -EINVAL; in serial_omap_probe_rs485()
1613 uart_get_rs485_mode(up->dev, rs485conf); in serial_omap_probe_rs485()
1624 up->rts_gpio = of_get_named_gpio(np, "rts-gpio", 0); in serial_omap_probe_rs485()
1625 if (gpio_is_valid(up->rts_gpio)) { in serial_omap_probe_rs485()
1626 ret = devm_gpio_request(up->dev, up->rts_gpio, "omap-serial"); in serial_omap_probe_rs485()
1630 ret = gpio_direction_output(up->rts_gpio, ret); in serial_omap_probe_rs485()
1633 } else if (up->rts_gpio == -EPROBE_DEFER) { in serial_omap_probe_rs485()
1636 up->rts_gpio = -EINVAL; in serial_omap_probe_rs485()
1645 struct uart_omap_port *up; in serial_omap_probe() local
1666 up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL); in serial_omap_probe()
1667 if (!up) in serial_omap_probe()
1675 up->dev = &pdev->dev; in serial_omap_probe()
1676 up->port.dev = &pdev->dev; in serial_omap_probe()
1677 up->port.type = PORT_OMAP; in serial_omap_probe()
1678 up->port.iotype = UPIO_MEM; in serial_omap_probe()
1679 up->port.irq = uartirq; in serial_omap_probe()
1680 up->port.regshift = 2; in serial_omap_probe()
1681 up->port.fifosize = 64; in serial_omap_probe()
1682 up->port.ops = &serial_omap_pops; in serial_omap_probe()
1694 up->port.line = ret; in serial_omap_probe()
1696 if (up->port.line >= OMAP_MAX_HSUART_PORTS) { in serial_omap_probe()
1697 dev_err(&pdev->dev, "uart ID %d > MAX %d.\n", up->port.line, in serial_omap_probe()
1703 up->wakeirq = wakeirq; in serial_omap_probe()
1704 if (!up->wakeirq) in serial_omap_probe()
1705 dev_info(up->port.dev, "no wakeirq for uart%d\n", in serial_omap_probe()
1706 up->port.line); in serial_omap_probe()
1708 ret = serial_omap_probe_rs485(up, pdev->dev.of_node); in serial_omap_probe()
1712 sprintf(up->name, "OMAP UART%d", up->port.line); in serial_omap_probe()
1713 up->port.mapbase = mem->start; in serial_omap_probe()
1714 up->port.membase = base; in serial_omap_probe()
1715 up->port.flags = omap_up_info->flags; in serial_omap_probe()
1716 up->port.uartclk = omap_up_info->uartclk; in serial_omap_probe()
1717 up->port.rs485_config = serial_omap_config_rs485; in serial_omap_probe()
1718 if (!up->port.uartclk) { in serial_omap_probe()
1719 up->port.uartclk = DEFAULT_CLK_SPEED; in serial_omap_probe()
1725 up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; in serial_omap_probe()
1726 up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; in serial_omap_probe()
1727 pm_qos_add_request(&up->pm_qos_request, in serial_omap_probe()
1728 PM_QOS_CPU_DMA_LATENCY, up->latency); in serial_omap_probe()
1729 INIT_WORK(&up->qos_work, serial_omap_uart_qos_work); in serial_omap_probe()
1731 platform_set_drvdata(pdev, up); in serial_omap_probe()
1735 device_init_wakeup(up->dev, true); in serial_omap_probe()
1745 omap_serial_fill_features_erratas(up); in serial_omap_probe()
1747 ui[up->port.line] = up; in serial_omap_probe()
1748 serial_omap_add_console_port(up); in serial_omap_probe()
1750 ret = uart_add_one_port(&serial_omap_reg, &up->port); in serial_omap_probe()
1754 pm_runtime_mark_last_busy(up->dev); in serial_omap_probe()
1755 pm_runtime_put_autosuspend(up->dev); in serial_omap_probe()
1762 pm_qos_remove_request(&up->pm_qos_request); in serial_omap_probe()
1763 device_init_wakeup(up->dev, false); in serial_omap_probe()
1771 struct uart_omap_port *up = platform_get_drvdata(dev); in serial_omap_remove() local
1773 pm_runtime_get_sync(up->dev); in serial_omap_remove()
1775 uart_remove_one_port(&serial_omap_reg, &up->port); in serial_omap_remove()
1777 pm_runtime_dont_use_autosuspend(up->dev); in serial_omap_remove()
1778 pm_runtime_put_sync(up->dev); in serial_omap_remove()
1779 pm_runtime_disable(up->dev); in serial_omap_remove()
1780 pm_qos_remove_request(&up->pm_qos_request); in serial_omap_remove()
1795 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) in serial_omap_mdr1_errataset() argument
1799 serial_out(up, UART_OMAP_MDR1, mdr1); in serial_omap_mdr1_errataset()
1801 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in serial_omap_mdr1_errataset()
1807 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in serial_omap_mdr1_errataset()
1812 dev_crit(up->dev, "Errata i202: timedout %x\n", in serial_omap_mdr1_errataset()
1813 serial_in(up, UART_LSR)); in serial_omap_mdr1_errataset()
1821 static void serial_omap_restore_context(struct uart_omap_port *up) in serial_omap_restore_context() argument
1823 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1824 serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1826 serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1828 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1829 serial_out(up, UART_EFR, UART_EFR_ECB); in serial_omap_restore_context()
1830 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1831 serial_out(up, UART_IER, 0x0); in serial_omap_restore_context()
1832 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1833 serial_out(up, UART_DLL, up->dll); in serial_omap_restore_context()
1834 serial_out(up, UART_DLM, up->dlh); in serial_omap_restore_context()
1835 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1836 serial_out(up, UART_IER, up->ier); in serial_omap_restore_context()
1837 serial_out(up, UART_FCR, up->fcr); in serial_omap_restore_context()
1838 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_restore_context()
1839 serial_out(up, UART_MCR, up->mcr); in serial_omap_restore_context()
1840 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1841 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_restore_context()
1842 serial_out(up, UART_EFR, up->efr); in serial_omap_restore_context()
1843 serial_out(up, UART_LCR, up->lcr); in serial_omap_restore_context()
1844 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1845 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_restore_context()
1847 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_restore_context()
1848 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_restore_context()
1853 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_suspend() local
1855 if (!up) in serial_omap_runtime_suspend()
1864 if (up->is_suspending && !console_suspend_enabled && in serial_omap_runtime_suspend()
1865 uart_console(&up->port)) in serial_omap_runtime_suspend()
1868 up->context_loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_suspend()
1870 serial_omap_enable_wakeup(up, true); in serial_omap_runtime_suspend()
1872 up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; in serial_omap_runtime_suspend()
1873 schedule_work(&up->qos_work); in serial_omap_runtime_suspend()
1880 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_resume() local
1882 int loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_resume()
1884 serial_omap_enable_wakeup(up, false); in serial_omap_runtime_resume()
1889 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1890 } else if (up->context_loss_cnt != loss_cnt) { in serial_omap_runtime_resume()
1891 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1893 up->latency = up->calc_latency; in serial_omap_runtime_resume()
1894 schedule_work(&up->qos_work); in serial_omap_runtime_resume()