Lines Matching refs:up
180 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
182 static inline unsigned int serial_in(struct uart_omap_port *up, int offset) in serial_in() argument
184 offset <<= up->port.regshift; in serial_in()
185 return readw(up->port.membase + offset); in serial_in()
188 static inline void serial_out(struct uart_omap_port *up, int offset, int value) in serial_out() argument
190 offset <<= up->port.regshift; in serial_out()
191 writew(value, up->port.membase + offset); in serial_out()
194 static inline void serial_omap_clear_fifos(struct uart_omap_port *up) in serial_omap_clear_fifos() argument
196 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in serial_omap_clear_fifos()
197 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in serial_omap_clear_fifos()
199 serial_out(up, UART_FCR, 0); in serial_omap_clear_fifos()
202 static int serial_omap_get_context_loss_count(struct uart_omap_port *up) in serial_omap_get_context_loss_count() argument
204 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_get_context_loss_count()
209 return pdata->get_context_loss_count(up->dev); in serial_omap_get_context_loss_count()
212 static inline void serial_omap_enable_wakeirq(struct uart_omap_port *up, in serial_omap_enable_wakeirq() argument
215 if (!up->wakeirq) in serial_omap_enable_wakeirq()
219 enable_irq(up->wakeirq); in serial_omap_enable_wakeirq()
221 disable_irq_nosync(up->wakeirq); in serial_omap_enable_wakeirq()
224 static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable) in serial_omap_enable_wakeup() argument
226 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_enable_wakeup()
228 if (enable == up->wakeups_enabled) in serial_omap_enable_wakeup()
231 serial_omap_enable_wakeirq(up, enable); in serial_omap_enable_wakeup()
232 up->wakeups_enabled = enable; in serial_omap_enable_wakeup()
237 pdata->enable_wakeup(up->dev, enable); in serial_omap_enable_wakeup()
299 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_enable_ms() local
301 dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line); in serial_omap_enable_ms()
303 pm_runtime_get_sync(up->dev); in serial_omap_enable_ms()
304 up->ier |= UART_IER_MSI; in serial_omap_enable_ms()
305 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ms()
306 pm_runtime_mark_last_busy(up->dev); in serial_omap_enable_ms()
307 pm_runtime_put_autosuspend(up->dev); in serial_omap_enable_ms()
312 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_tx() local
315 pm_runtime_get_sync(up->dev); in serial_omap_stop_tx()
319 if (up->scr & OMAP_UART_SCR_TX_EMPTY) { 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()
331 if (gpio_get_value(up->rts_gpio) != res) { in serial_omap_stop_tx()
335 gpio_set_value(up->rts_gpio, res); in serial_omap_stop_tx()
346 up->scr |= OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
347 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
352 if (up->ier & UART_IER_THRI) { in serial_omap_stop_tx()
353 up->ier &= ~UART_IER_THRI; in serial_omap_stop_tx()
354 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
363 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_RCVR); in serial_omap_stop_tx()
365 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_stop_tx()
366 up->port.read_status_mask |= UART_LSR_DR; in serial_omap_stop_tx()
367 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
370 pm_runtime_mark_last_busy(up->dev); in serial_omap_stop_tx()
371 pm_runtime_put_autosuspend(up->dev); in serial_omap_stop_tx()
376 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_rx() local
378 pm_runtime_get_sync(up->dev); in serial_omap_stop_rx()
379 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_stop_rx()
380 up->port.read_status_mask &= ~UART_LSR_DR; in serial_omap_stop_rx()
381 serial_out(up, UART_IER, up->ier); in serial_omap_stop_rx()
382 pm_runtime_mark_last_busy(up->dev); in serial_omap_stop_rx()
383 pm_runtime_put_autosuspend(up->dev); in serial_omap_stop_rx()
386 static void transmit_chars(struct uart_omap_port *up, unsigned int lsr) in transmit_chars() argument
388 struct circ_buf *xmit = &up->port.state->xmit; in transmit_chars()
391 if (up->port.x_char) { in transmit_chars()
392 serial_out(up, UART_TX, up->port.x_char); in transmit_chars()
393 up->port.icount.tx++; in transmit_chars()
394 up->port.x_char = 0; in transmit_chars()
397 if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { in transmit_chars()
398 serial_omap_stop_tx(&up->port); in transmit_chars()
401 count = up->port.fifosize / 4; in transmit_chars()
403 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in transmit_chars()
405 up->port.icount.tx++; in transmit_chars()
411 uart_write_wakeup(&up->port); in transmit_chars()
414 serial_omap_stop_tx(&up->port); in transmit_chars()
417 static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up) in serial_omap_enable_ier_thri() argument
419 if (!(up->ier & UART_IER_THRI)) { in serial_omap_enable_ier_thri()
420 up->ier |= UART_IER_THRI; in serial_omap_enable_ier_thri()
421 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ier_thri()
427 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_start_tx() local
430 pm_runtime_get_sync(up->dev); in serial_omap_start_tx()
435 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_start_tx()
436 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_start_tx()
440 if (gpio_get_value(up->rts_gpio) != res) { in serial_omap_start_tx()
441 gpio_set_value(up->rts_gpio, res); in serial_omap_start_tx()
451 serial_omap_enable_ier_thri(up); in serial_omap_start_tx()
452 pm_runtime_mark_last_busy(up->dev); in serial_omap_start_tx()
453 pm_runtime_put_autosuspend(up->dev); in serial_omap_start_tx()
458 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_throttle() local
461 pm_runtime_get_sync(up->dev); in serial_omap_throttle()
462 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_throttle()
463 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_throttle()
464 serial_out(up, UART_IER, up->ier); in serial_omap_throttle()
465 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_throttle()
466 pm_runtime_mark_last_busy(up->dev); in serial_omap_throttle()
467 pm_runtime_put_autosuspend(up->dev); in serial_omap_throttle()
472 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_unthrottle() local
475 pm_runtime_get_sync(up->dev); in serial_omap_unthrottle()
476 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_unthrottle()
477 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_unthrottle()
478 serial_out(up, UART_IER, up->ier); in serial_omap_unthrottle()
479 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_unthrottle()
480 pm_runtime_mark_last_busy(up->dev); in serial_omap_unthrottle()
481 pm_runtime_put_autosuspend(up->dev); in serial_omap_unthrottle()
484 static unsigned int check_modem_status(struct uart_omap_port *up) in check_modem_status() argument
488 status = serial_in(up, UART_MSR); in check_modem_status()
489 status |= up->msr_saved_flags; in check_modem_status()
490 up->msr_saved_flags = 0; in check_modem_status()
494 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in check_modem_status()
495 up->port.state != NULL) { in check_modem_status()
497 up->port.icount.rng++; in check_modem_status()
499 up->port.icount.dsr++; in check_modem_status()
502 (&up->port, status & UART_MSR_DCD); in check_modem_status()
505 (&up->port, status & UART_MSR_CTS); in check_modem_status()
506 wake_up_interruptible(&up->port.state->port.delta_msr_wait); in check_modem_status()
512 static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rlsi() argument
518 ch = serial_in(up, UART_RX); in serial_omap_rlsi()
520 up->port.icount.rx++; in serial_omap_rlsi()
526 up->port.icount.brk++; in serial_omap_rlsi()
533 if (uart_handle_break(&up->port)) in serial_omap_rlsi()
540 up->port.icount.parity++; in serial_omap_rlsi()
545 up->port.icount.frame++; in serial_omap_rlsi()
549 up->port.icount.overrun++; in serial_omap_rlsi()
552 if (up->port.line == up->port.cons->index) { in serial_omap_rlsi()
554 lsr |= up->lsr_break_flag; in serial_omap_rlsi()
557 uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag); in serial_omap_rlsi()
560 static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rdi() argument
568 ch = serial_in(up, UART_RX); in serial_omap_rdi()
570 up->port.icount.rx++; in serial_omap_rdi()
572 if (uart_handle_sysrq_char(&up->port, ch)) in serial_omap_rdi()
575 uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag); in serial_omap_rdi()
585 struct uart_omap_port *up = dev_id; in serial_omap_irq() local
591 spin_lock(&up->port.lock); in serial_omap_irq()
592 pm_runtime_get_sync(up->dev); in serial_omap_irq()
595 iir = serial_in(up, UART_IIR); in serial_omap_irq()
600 lsr = serial_in(up, UART_LSR); in serial_omap_irq()
607 check_modem_status(up); in serial_omap_irq()
610 transmit_chars(up, lsr); in serial_omap_irq()
615 serial_omap_rdi(up, lsr); in serial_omap_irq()
618 serial_omap_rlsi(up, lsr); in serial_omap_irq()
630 spin_unlock(&up->port.lock); in serial_omap_irq()
632 tty_flip_buffer_push(&up->port.state->port); in serial_omap_irq()
634 pm_runtime_mark_last_busy(up->dev); in serial_omap_irq()
635 pm_runtime_put_autosuspend(up->dev); in serial_omap_irq()
636 up->port_activity = jiffies; in serial_omap_irq()
643 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_tx_empty() local
647 pm_runtime_get_sync(up->dev); in serial_omap_tx_empty()
648 dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); in serial_omap_tx_empty()
649 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_tx_empty()
650 ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; in serial_omap_tx_empty()
651 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_tx_empty()
652 pm_runtime_mark_last_busy(up->dev); in serial_omap_tx_empty()
653 pm_runtime_put_autosuspend(up->dev); in serial_omap_tx_empty()
659 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_get_mctrl() local
663 pm_runtime_get_sync(up->dev); in serial_omap_get_mctrl()
664 status = check_modem_status(up); in serial_omap_get_mctrl()
665 pm_runtime_mark_last_busy(up->dev); in serial_omap_get_mctrl()
666 pm_runtime_put_autosuspend(up->dev); in serial_omap_get_mctrl()
668 dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); in serial_omap_get_mctrl()
683 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_mctrl() local
686 dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line); in serial_omap_set_mctrl()
698 pm_runtime_get_sync(up->dev); in serial_omap_set_mctrl()
699 old_mcr = serial_in(up, UART_MCR); in serial_omap_set_mctrl()
702 up->mcr = old_mcr | mcr; in serial_omap_set_mctrl()
703 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_mctrl()
706 lcr = serial_in(up, UART_LCR); in serial_omap_set_mctrl()
707 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_mctrl()
709 up->efr |= UART_EFR_RTS; in serial_omap_set_mctrl()
711 up->efr &= UART_EFR_RTS; in serial_omap_set_mctrl()
712 serial_out(up, UART_EFR, up->efr); in serial_omap_set_mctrl()
713 serial_out(up, UART_LCR, lcr); in serial_omap_set_mctrl()
715 pm_runtime_mark_last_busy(up->dev); in serial_omap_set_mctrl()
716 pm_runtime_put_autosuspend(up->dev); in serial_omap_set_mctrl()
721 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_break_ctl() local
724 dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); in serial_omap_break_ctl()
725 pm_runtime_get_sync(up->dev); in serial_omap_break_ctl()
726 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_break_ctl()
728 up->lcr |= UART_LCR_SBC; in serial_omap_break_ctl()
730 up->lcr &= ~UART_LCR_SBC; in serial_omap_break_ctl()
731 serial_out(up, UART_LCR, up->lcr); in serial_omap_break_ctl()
732 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_break_ctl()
733 pm_runtime_mark_last_busy(up->dev); in serial_omap_break_ctl()
734 pm_runtime_put_autosuspend(up->dev); in serial_omap_break_ctl()
739 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_startup() local
746 retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags, in serial_omap_startup()
747 up->name, up); in serial_omap_startup()
752 if (up->wakeirq) { in serial_omap_startup()
753 retval = request_irq(up->wakeirq, serial_omap_irq, in serial_omap_startup()
754 up->port.irqflags, up->name, up); in serial_omap_startup()
756 free_irq(up->port.irq, up); in serial_omap_startup()
759 disable_irq(up->wakeirq); in serial_omap_startup()
762 dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); in serial_omap_startup()
764 pm_runtime_get_sync(up->dev); in serial_omap_startup()
769 serial_omap_clear_fifos(up); in serial_omap_startup()
774 (void) serial_in(up, UART_LSR); in serial_omap_startup()
775 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_startup()
776 (void) serial_in(up, UART_RX); in serial_omap_startup()
777 (void) serial_in(up, UART_IIR); in serial_omap_startup()
778 (void) serial_in(up, UART_MSR); in serial_omap_startup()
783 serial_out(up, UART_LCR, UART_LCR_WLEN8); in serial_omap_startup()
784 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_startup()
788 up->port.mctrl |= TIOCM_OUT2; in serial_omap_startup()
789 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_startup()
790 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_startup()
792 up->msr_saved_flags = 0; in serial_omap_startup()
798 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial_omap_startup()
799 serial_out(up, UART_IER, up->ier); in serial_omap_startup()
802 up->wer = OMAP_UART_WER_MOD_WKUP; in serial_omap_startup()
803 if (up->features & OMAP_UART_WER_HAS_TX_WAKEUP) in serial_omap_startup()
804 up->wer |= OMAP_UART_TX_WAKEUP_EN; in serial_omap_startup()
806 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_startup()
808 pm_runtime_mark_last_busy(up->dev); in serial_omap_startup()
809 pm_runtime_put_autosuspend(up->dev); in serial_omap_startup()
810 up->port_activity = jiffies; in serial_omap_startup()
816 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_shutdown() local
819 dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); in serial_omap_shutdown()
821 pm_runtime_get_sync(up->dev); in serial_omap_shutdown()
825 up->ier = 0; in serial_omap_shutdown()
826 serial_out(up, UART_IER, 0); in serial_omap_shutdown()
828 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_shutdown()
829 up->port.mctrl &= ~TIOCM_OUT2; in serial_omap_shutdown()
830 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_shutdown()
831 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_shutdown()
836 serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC); in serial_omap_shutdown()
837 serial_omap_clear_fifos(up); in serial_omap_shutdown()
842 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_shutdown()
843 (void) serial_in(up, UART_RX); in serial_omap_shutdown()
845 pm_runtime_mark_last_busy(up->dev); in serial_omap_shutdown()
846 pm_runtime_put_autosuspend(up->dev); in serial_omap_shutdown()
847 free_irq(up->port.irq, up); in serial_omap_shutdown()
848 if (up->wakeirq) in serial_omap_shutdown()
849 free_irq(up->wakeirq, up); in serial_omap_shutdown()
854 struct uart_omap_port *up = container_of(work, struct uart_omap_port, in serial_omap_uart_qos_work() local
857 pm_qos_update_request(&up->pm_qos_request, up->latency); in serial_omap_uart_qos_work()
864 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_termios() local
902 up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8); in serial_omap_set_termios()
903 up->latency = up->calc_latency; in serial_omap_set_termios()
904 schedule_work(&up->qos_work); in serial_omap_set_termios()
906 up->dll = quot & 0xff; in serial_omap_set_termios()
907 up->dlh = quot >> 8; in serial_omap_set_termios()
908 up->mdr1 = UART_OMAP_MDR1_DISABLE; in serial_omap_set_termios()
910 up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 | in serial_omap_set_termios()
917 pm_runtime_get_sync(up->dev); in serial_omap_set_termios()
918 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_set_termios()
925 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in serial_omap_set_termios()
927 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in serial_omap_set_termios()
929 up->port.read_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
934 up->port.ignore_status_mask = 0; in serial_omap_set_termios()
936 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in serial_omap_set_termios()
938 up->port.ignore_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
944 up->port.ignore_status_mask |= UART_LSR_OE; in serial_omap_set_termios()
951 up->port.ignore_status_mask |= UART_LSR_DR; in serial_omap_set_termios()
956 up->ier &= ~UART_IER_MSI; in serial_omap_set_termios()
957 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial_omap_set_termios()
958 up->ier |= UART_IER_MSI; in serial_omap_set_termios()
959 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
960 serial_out(up, UART_LCR, cval); /* reset DLAB */ in serial_omap_set_termios()
961 up->lcr = cval; in serial_omap_set_termios()
962 up->scr = 0; in serial_omap_set_termios()
970 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
971 serial_out(up, UART_DLL, 0); in serial_omap_set_termios()
972 serial_out(up, UART_DLM, 0); in serial_omap_set_termios()
973 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
975 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
977 up->efr = serial_in(up, UART_EFR) & ~UART_EFR_ECB; in serial_omap_set_termios()
978 up->efr &= ~UART_EFR_SCD; in serial_omap_set_termios()
979 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
981 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
982 up->mcr = serial_in(up, UART_MCR) & ~UART_MCR_TCRTLR; in serial_omap_set_termios()
983 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
986 up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; in serial_omap_set_termios()
1000 up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK; in serial_omap_set_termios()
1001 up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK; in serial_omap_set_termios()
1002 up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 | in serial_omap_set_termios()
1005 serial_out(up, UART_FCR, up->fcr); in serial_omap_set_termios()
1006 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1008 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_set_termios()
1011 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1012 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
1013 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1014 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1015 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1019 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
1020 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
1022 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
1024 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1025 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1027 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
1028 serial_out(up, UART_IER, 0); in serial_omap_set_termios()
1029 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1031 serial_out(up, UART_DLL, up->dll); /* LS of divisor */ in serial_omap_set_termios()
1032 serial_out(up, UART_DLM, up->dlh); /* MS of divisor */ in serial_omap_set_termios()
1034 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
1035 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
1036 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1038 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1039 serial_out(up, UART_LCR, cval); in serial_omap_set_termios()
1042 up->mdr1 = UART_OMAP_MDR1_13X_MODE; in serial_omap_set_termios()
1044 up->mdr1 = UART_OMAP_MDR1_16X_MODE; in serial_omap_set_termios()
1046 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
1047 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
1049 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
1052 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1055 serial_out(up, UART_XON1, termios->c_cc[VSTART]); in serial_omap_set_termios()
1056 serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); in serial_omap_set_termios()
1059 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1060 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1061 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
1063 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); in serial_omap_set_termios()
1065 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in serial_omap_set_termios()
1067 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { in serial_omap_set_termios()
1069 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in serial_omap_set_termios()
1070 up->efr |= UART_EFR_CTS; in serial_omap_set_termios()
1073 up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); in serial_omap_set_termios()
1076 if (up->port.flags & UPF_SOFT_FLOW) { in serial_omap_set_termios()
1078 up->efr &= OMAP_UART_SW_CLR; in serial_omap_set_termios()
1086 up->efr |= OMAP_UART_SW_RX; in serial_omap_set_termios()
1094 up->port.status |= UPSTAT_AUTOXOFF; in serial_omap_set_termios()
1095 up->efr |= OMAP_UART_SW_TX; in serial_omap_set_termios()
1105 up->mcr |= UART_MCR_XONANY; in serial_omap_set_termios()
1107 up->mcr &= ~UART_MCR_XONANY; in serial_omap_set_termios()
1109 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
1110 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1111 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1112 serial_out(up, UART_LCR, up->lcr); in serial_omap_set_termios()
1114 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_set_termios()
1116 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_set_termios()
1117 pm_runtime_mark_last_busy(up->dev); in serial_omap_set_termios()
1118 pm_runtime_put_autosuspend(up->dev); in serial_omap_set_termios()
1119 dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); in serial_omap_set_termios()
1126 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_pm() local
1129 dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); in serial_omap_pm()
1131 pm_runtime_get_sync(up->dev); in serial_omap_pm()
1132 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1133 efr = serial_in(up, UART_EFR); in serial_omap_pm()
1134 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in serial_omap_pm()
1135 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1137 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in serial_omap_pm()
1138 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1139 serial_out(up, UART_EFR, efr); in serial_omap_pm()
1140 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1142 if (!device_may_wakeup(up->dev)) { in serial_omap_pm()
1144 pm_runtime_forbid(up->dev); in serial_omap_pm()
1146 pm_runtime_allow(up->dev); in serial_omap_pm()
1149 pm_runtime_mark_last_busy(up->dev); in serial_omap_pm()
1150 pm_runtime_put_autosuspend(up->dev); in serial_omap_pm()
1166 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_port() local
1168 dev_dbg(up->port.dev, "serial_omap_config_port+%d\n", in serial_omap_config_port()
1169 up->port.line); in serial_omap_config_port()
1170 up->port.type = PORT_OMAP; in serial_omap_config_port()
1171 up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW; in serial_omap_config_port()
1185 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_type() local
1187 dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line); in serial_omap_type()
1188 return up->name; in serial_omap_type()
1193 static inline void wait_for_xmitr(struct uart_omap_port *up) in wait_for_xmitr() argument
1199 status = serial_in(up, UART_LSR); in wait_for_xmitr()
1202 up->lsr_break_flag = UART_LSR_BI; in wait_for_xmitr()
1210 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
1213 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
1215 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
1228 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_put_char() local
1230 pm_runtime_get_sync(up->dev); in serial_omap_poll_put_char()
1231 wait_for_xmitr(up); in serial_omap_poll_put_char()
1232 serial_out(up, UART_TX, ch); in serial_omap_poll_put_char()
1233 pm_runtime_mark_last_busy(up->dev); in serial_omap_poll_put_char()
1234 pm_runtime_put_autosuspend(up->dev); in serial_omap_poll_put_char()
1239 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_get_char() local
1242 pm_runtime_get_sync(up->dev); in serial_omap_poll_get_char()
1243 status = serial_in(up, UART_LSR); in serial_omap_poll_get_char()
1249 status = serial_in(up, UART_RX); in serial_omap_poll_get_char()
1252 pm_runtime_mark_last_busy(up->dev); in serial_omap_poll_get_char()
1253 pm_runtime_put_autosuspend(up->dev); in serial_omap_poll_get_char()
1268 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_console_putchar() local
1270 wait_for_xmitr(up); in serial_omap_console_putchar()
1271 serial_out(up, UART_TX, ch); in serial_omap_console_putchar()
1278 struct uart_omap_port *up = serial_omap_console_ports[co->index]; in serial_omap_console_write() local
1283 pm_runtime_get_sync(up->dev); in serial_omap_console_write()
1286 if (up->port.sysrq) in serial_omap_console_write()
1289 locked = spin_trylock(&up->port.lock); in serial_omap_console_write()
1291 spin_lock(&up->port.lock); in serial_omap_console_write()
1296 ier = serial_in(up, UART_IER); in serial_omap_console_write()
1297 serial_out(up, UART_IER, 0); in serial_omap_console_write()
1299 uart_console_write(&up->port, s, count, serial_omap_console_putchar); in serial_omap_console_write()
1305 wait_for_xmitr(up); in serial_omap_console_write()
1306 serial_out(up, UART_IER, ier); in serial_omap_console_write()
1314 if (up->msr_saved_flags) in serial_omap_console_write()
1315 check_modem_status(up); in serial_omap_console_write()
1317 pm_runtime_mark_last_busy(up->dev); in serial_omap_console_write()
1318 pm_runtime_put_autosuspend(up->dev); in serial_omap_console_write()
1320 spin_unlock(&up->port.lock); in serial_omap_console_write()
1327 struct uart_omap_port *up; in serial_omap_console_setup() local
1335 up = serial_omap_console_ports[co->index]; in serial_omap_console_setup()
1340 return uart_set_options(&up->port, co, baud, parity, bits, flow); in serial_omap_console_setup()
1353 static void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1355 serial_omap_console_ports[up->port.line] = up; in serial_omap_add_console_port()
1364 static inline void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1373 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_rs485() local
1377 pm_runtime_get_sync(up->dev); in serial_omap_config_rs485()
1380 mode = up->ier; in serial_omap_config_rs485()
1381 up->ier = 0; in serial_omap_config_rs485()
1382 serial_out(up, UART_IER, 0); in serial_omap_config_rs485()
1395 if (gpio_is_valid(up->rts_gpio)) { in serial_omap_config_rs485()
1400 gpio_set_value(up->rts_gpio, val); in serial_omap_config_rs485()
1405 up->ier = mode; in serial_omap_config_rs485()
1406 serial_out(up, UART_IER, up->ier); in serial_omap_config_rs485()
1412 (up->scr & OMAP_UART_SCR_TX_EMPTY)) { in serial_omap_config_rs485()
1413 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_config_rs485()
1414 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_config_rs485()
1417 pm_runtime_mark_last_busy(up->dev); in serial_omap_config_rs485()
1418 pm_runtime_put_autosuspend(up->dev); in serial_omap_config_rs485()
1460 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_prepare() local
1462 up->is_suspending = true; in serial_omap_prepare()
1469 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_complete() local
1471 up->is_suspending = false; in serial_omap_complete()
1476 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_suspend() local
1478 uart_suspend_port(&serial_omap_reg, &up->port); in serial_omap_suspend()
1479 flush_work(&up->qos_work); in serial_omap_suspend()
1482 serial_omap_enable_wakeup(up, true); in serial_omap_suspend()
1484 serial_omap_enable_wakeup(up, false); in serial_omap_suspend()
1491 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_resume() local
1494 serial_omap_enable_wakeup(up, false); in serial_omap_resume()
1496 uart_resume_port(&serial_omap_reg, &up->port); in serial_omap_resume()
1505 static void omap_serial_fill_features_erratas(struct uart_omap_port *up) in omap_serial_fill_features_erratas() argument
1510 mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift)); in omap_serial_fill_features_erratas()
1530 dev_warn(up->dev, in omap_serial_fill_features_erratas()
1532 up->name); in omap_serial_fill_features_erratas()
1543 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1547 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1549 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1552 up->errata |= UART_ERRATA_i202_MDR1_ACCESS; in omap_serial_fill_features_erratas()
1553 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1573 static int serial_omap_probe_rs485(struct uart_omap_port *up, in serial_omap_probe_rs485() argument
1576 struct serial_rs485 *rs485conf = &up->port.rs485; in serial_omap_probe_rs485()
1582 up->rts_gpio = -EINVAL; in serial_omap_probe_rs485()
1593 up->rts_gpio = of_get_named_gpio_flags(np, "rts-gpio", 0, &flags); in serial_omap_probe_rs485()
1594 if (gpio_is_valid(up->rts_gpio)) { in serial_omap_probe_rs485()
1595 ret = devm_gpio_request(up->dev, up->rts_gpio, "omap-serial"); in serial_omap_probe_rs485()
1598 ret = gpio_direction_output(up->rts_gpio, in serial_omap_probe_rs485()
1602 } else if (up->rts_gpio == -EPROBE_DEFER) { in serial_omap_probe_rs485()
1605 up->rts_gpio = -EINVAL; in serial_omap_probe_rs485()
1626 struct uart_omap_port *up; in serial_omap_probe() local
1647 up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL); in serial_omap_probe()
1648 if (!up) in serial_omap_probe()
1656 up->dev = &pdev->dev; in serial_omap_probe()
1657 up->port.dev = &pdev->dev; in serial_omap_probe()
1658 up->port.type = PORT_OMAP; in serial_omap_probe()
1659 up->port.iotype = UPIO_MEM; in serial_omap_probe()
1660 up->port.irq = uartirq; in serial_omap_probe()
1661 up->port.regshift = 2; in serial_omap_probe()
1662 up->port.fifosize = 64; in serial_omap_probe()
1663 up->port.ops = &serial_omap_pops; in serial_omap_probe()
1675 up->port.line = ret; in serial_omap_probe()
1677 if (up->port.line >= OMAP_MAX_HSUART_PORTS) { in serial_omap_probe()
1678 dev_err(&pdev->dev, "uart ID %d > MAX %d.\n", up->port.line, in serial_omap_probe()
1684 up->wakeirq = wakeirq; in serial_omap_probe()
1685 if (!up->wakeirq) in serial_omap_probe()
1686 dev_info(up->port.dev, "no wakeirq for uart%d\n", in serial_omap_probe()
1687 up->port.line); in serial_omap_probe()
1689 ret = serial_omap_probe_rs485(up, pdev->dev.of_node); in serial_omap_probe()
1693 sprintf(up->name, "OMAP UART%d", up->port.line); in serial_omap_probe()
1694 up->port.mapbase = mem->start; in serial_omap_probe()
1695 up->port.membase = base; in serial_omap_probe()
1696 up->port.flags = omap_up_info->flags; in serial_omap_probe()
1697 up->port.uartclk = omap_up_info->uartclk; in serial_omap_probe()
1698 up->port.rs485_config = serial_omap_config_rs485; in serial_omap_probe()
1699 if (!up->port.uartclk) { in serial_omap_probe()
1700 up->port.uartclk = DEFAULT_CLK_SPEED; in serial_omap_probe()
1706 up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; in serial_omap_probe()
1707 up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; in serial_omap_probe()
1708 pm_qos_add_request(&up->pm_qos_request, in serial_omap_probe()
1709 PM_QOS_CPU_DMA_LATENCY, up->latency); in serial_omap_probe()
1710 INIT_WORK(&up->qos_work, serial_omap_uart_qos_work); in serial_omap_probe()
1712 platform_set_drvdata(pdev, up); in serial_omap_probe()
1716 device_init_wakeup(up->dev, true); in serial_omap_probe()
1726 omap_serial_fill_features_erratas(up); in serial_omap_probe()
1728 ui[up->port.line] = up; in serial_omap_probe()
1729 serial_omap_add_console_port(up); in serial_omap_probe()
1731 ret = uart_add_one_port(&serial_omap_reg, &up->port); in serial_omap_probe()
1735 pm_runtime_mark_last_busy(up->dev); in serial_omap_probe()
1736 pm_runtime_put_autosuspend(up->dev); in serial_omap_probe()
1742 pm_qos_remove_request(&up->pm_qos_request); in serial_omap_probe()
1743 device_init_wakeup(up->dev, false); in serial_omap_probe()
1751 struct uart_omap_port *up = platform_get_drvdata(dev); in serial_omap_remove() local
1753 pm_runtime_put_sync(up->dev); in serial_omap_remove()
1754 pm_runtime_disable(up->dev); in serial_omap_remove()
1755 uart_remove_one_port(&serial_omap_reg, &up->port); in serial_omap_remove()
1756 pm_qos_remove_request(&up->pm_qos_request); in serial_omap_remove()
1771 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) in serial_omap_mdr1_errataset() argument
1775 serial_out(up, UART_OMAP_MDR1, mdr1); in serial_omap_mdr1_errataset()
1777 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in serial_omap_mdr1_errataset()
1783 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in serial_omap_mdr1_errataset()
1788 dev_crit(up->dev, "Errata i202: timedout %x\n", in serial_omap_mdr1_errataset()
1789 serial_in(up, UART_LSR)); in serial_omap_mdr1_errataset()
1797 static void serial_omap_restore_context(struct uart_omap_port *up) in serial_omap_restore_context() argument
1799 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1800 serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1802 serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1804 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1805 serial_out(up, UART_EFR, UART_EFR_ECB); in serial_omap_restore_context()
1806 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1807 serial_out(up, UART_IER, 0x0); in serial_omap_restore_context()
1808 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1809 serial_out(up, UART_DLL, up->dll); in serial_omap_restore_context()
1810 serial_out(up, UART_DLM, up->dlh); in serial_omap_restore_context()
1811 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1812 serial_out(up, UART_IER, up->ier); in serial_omap_restore_context()
1813 serial_out(up, UART_FCR, up->fcr); in serial_omap_restore_context()
1814 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_restore_context()
1815 serial_out(up, UART_MCR, up->mcr); in serial_omap_restore_context()
1816 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1817 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_restore_context()
1818 serial_out(up, UART_EFR, up->efr); in serial_omap_restore_context()
1819 serial_out(up, UART_LCR, up->lcr); in serial_omap_restore_context()
1820 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1821 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_restore_context()
1823 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_restore_context()
1824 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_restore_context()
1829 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_suspend() local
1831 if (!up) in serial_omap_runtime_suspend()
1840 if (up->is_suspending && !console_suspend_enabled && in serial_omap_runtime_suspend()
1841 uart_console(&up->port)) in serial_omap_runtime_suspend()
1844 up->context_loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_suspend()
1846 serial_omap_enable_wakeup(up, true); in serial_omap_runtime_suspend()
1848 up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE; in serial_omap_runtime_suspend()
1849 schedule_work(&up->qos_work); in serial_omap_runtime_suspend()
1856 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_resume() local
1858 int loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_resume()
1860 serial_omap_enable_wakeup(up, false); in serial_omap_runtime_resume()
1865 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1866 } else if (up->context_loss_cnt != loss_cnt) { in serial_omap_runtime_resume()
1867 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1869 up->latency = up->calc_latency; in serial_omap_runtime_resume()
1870 schedule_work(&up->qos_work); in serial_omap_runtime_resume()