Lines Matching refs:up
171 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
173 static inline unsigned int serial_in(struct uart_omap_port *up, int offset) in serial_in() argument
175 offset <<= up->port.regshift; in serial_in()
176 return readw(up->port.membase + offset); in serial_in()
179 static inline void serial_out(struct uart_omap_port *up, int offset, int value) in serial_out() argument
181 offset <<= up->port.regshift; in serial_out()
182 writew(value, up->port.membase + offset); in serial_out()
185 static inline void serial_omap_clear_fifos(struct uart_omap_port *up) in serial_omap_clear_fifos() argument
187 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); in serial_omap_clear_fifos()
188 serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | in serial_omap_clear_fifos()
190 serial_out(up, UART_FCR, 0); in serial_omap_clear_fifos()
194 static int serial_omap_get_context_loss_count(struct uart_omap_port *up) in serial_omap_get_context_loss_count() argument
196 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_get_context_loss_count()
201 return pdata->get_context_loss_count(up->dev); in serial_omap_get_context_loss_count()
205 static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable) in serial_omap_enable_wakeup() argument
207 struct omap_uart_port_info *pdata = dev_get_platdata(up->dev); in serial_omap_enable_wakeup()
212 pdata->enable_wakeup(up->dev, enable); in serial_omap_enable_wakeup()
275 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_enable_ms() local
277 dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line); in serial_omap_enable_ms()
279 pm_runtime_get_sync(up->dev); in serial_omap_enable_ms()
280 up->ier |= UART_IER_MSI; in serial_omap_enable_ms()
281 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ms()
282 pm_runtime_mark_last_busy(up->dev); in serial_omap_enable_ms()
283 pm_runtime_put_autosuspend(up->dev); in serial_omap_enable_ms()
288 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_tx() local
291 pm_runtime_get_sync(up->dev); in serial_omap_stop_tx()
295 if (up->scr & OMAP_UART_SCR_TX_EMPTY) { in serial_omap_stop_tx()
303 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
304 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
307 if (up->rts_gpiod && in serial_omap_stop_tx()
308 gpiod_get_value(up->rts_gpiod) != res) { in serial_omap_stop_tx()
312 gpiod_set_value(up->rts_gpiod, res); in serial_omap_stop_tx()
323 up->scr |= OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
324 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
329 if (up->ier & UART_IER_THRI) { in serial_omap_stop_tx()
330 up->ier &= ~UART_IER_THRI; in serial_omap_stop_tx()
331 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
334 pm_runtime_mark_last_busy(up->dev); in serial_omap_stop_tx()
335 pm_runtime_put_autosuspend(up->dev); in serial_omap_stop_tx()
340 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_rx() local
342 pm_runtime_get_sync(up->dev); in serial_omap_stop_rx()
343 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_stop_rx()
344 up->port.read_status_mask &= ~UART_LSR_DR; in serial_omap_stop_rx()
345 serial_out(up, UART_IER, up->ier); in serial_omap_stop_rx()
346 pm_runtime_mark_last_busy(up->dev); in serial_omap_stop_rx()
347 pm_runtime_put_autosuspend(up->dev); in serial_omap_stop_rx()
350 static void transmit_chars(struct uart_omap_port *up, unsigned int lsr) in transmit_chars() argument
352 struct circ_buf *xmit = &up->port.state->xmit; in transmit_chars()
355 if (up->port.x_char) { in transmit_chars()
356 serial_out(up, UART_TX, up->port.x_char); in transmit_chars()
357 up->port.icount.tx++; in transmit_chars()
358 up->port.x_char = 0; in transmit_chars()
359 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in transmit_chars()
360 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in transmit_chars()
361 up->rs485_tx_filter_count++; in transmit_chars()
365 if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { in transmit_chars()
366 serial_omap_stop_tx(&up->port); in transmit_chars()
369 count = up->port.fifosize / 4; in transmit_chars()
371 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in transmit_chars()
373 up->port.icount.tx++; in transmit_chars()
374 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in transmit_chars()
375 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in transmit_chars()
376 up->rs485_tx_filter_count++; in transmit_chars()
383 uart_write_wakeup(&up->port); in transmit_chars()
386 serial_omap_stop_tx(&up->port); in transmit_chars()
389 static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up) in serial_omap_enable_ier_thri() argument
391 if (!(up->ier & UART_IER_THRI)) { in serial_omap_enable_ier_thri()
392 up->ier |= UART_IER_THRI; in serial_omap_enable_ier_thri()
393 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ier_thri()
399 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_start_tx() local
402 pm_runtime_get_sync(up->dev); in serial_omap_start_tx()
407 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_start_tx()
408 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_start_tx()
412 if (up->rts_gpiod && gpiod_get_value(up->rts_gpiod) != res) { in serial_omap_start_tx()
413 gpiod_set_value(up->rts_gpiod, res); in serial_omap_start_tx()
421 up->rs485_tx_filter_count = 0; in serial_omap_start_tx()
423 serial_omap_enable_ier_thri(up); in serial_omap_start_tx()
424 pm_runtime_mark_last_busy(up->dev); in serial_omap_start_tx()
425 pm_runtime_put_autosuspend(up->dev); in serial_omap_start_tx()
430 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_throttle() local
433 pm_runtime_get_sync(up->dev); in serial_omap_throttle()
434 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_throttle()
435 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_throttle()
436 serial_out(up, UART_IER, up->ier); in serial_omap_throttle()
437 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_throttle()
438 pm_runtime_mark_last_busy(up->dev); in serial_omap_throttle()
439 pm_runtime_put_autosuspend(up->dev); in serial_omap_throttle()
444 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_unthrottle() local
447 pm_runtime_get_sync(up->dev); in serial_omap_unthrottle()
448 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_unthrottle()
449 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_unthrottle()
450 serial_out(up, UART_IER, up->ier); in serial_omap_unthrottle()
451 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_unthrottle()
452 pm_runtime_mark_last_busy(up->dev); in serial_omap_unthrottle()
453 pm_runtime_put_autosuspend(up->dev); in serial_omap_unthrottle()
456 static unsigned int check_modem_status(struct uart_omap_port *up) in check_modem_status() argument
460 status = serial_in(up, UART_MSR); in check_modem_status()
461 status |= up->msr_saved_flags; in check_modem_status()
462 up->msr_saved_flags = 0; in check_modem_status()
466 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in check_modem_status()
467 up->port.state != NULL) { in check_modem_status()
469 up->port.icount.rng++; in check_modem_status()
471 up->port.icount.dsr++; in check_modem_status()
474 (&up->port, status & UART_MSR_DCD); in check_modem_status()
477 (&up->port, status & UART_MSR_CTS); in check_modem_status()
478 wake_up_interruptible(&up->port.state->port.delta_msr_wait); in check_modem_status()
484 static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rlsi() argument
493 serial_in(up, UART_RX); in serial_omap_rlsi()
494 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_rlsi()
495 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX) && in serial_omap_rlsi()
496 up->rs485_tx_filter_count) in serial_omap_rlsi()
497 up->rs485_tx_filter_count--; in serial_omap_rlsi()
500 up->port.icount.rx++; in serial_omap_rlsi()
506 up->port.icount.brk++; in serial_omap_rlsi()
513 if (uart_handle_break(&up->port)) in serial_omap_rlsi()
520 up->port.icount.parity++; in serial_omap_rlsi()
525 up->port.icount.frame++; in serial_omap_rlsi()
529 up->port.icount.overrun++; in serial_omap_rlsi()
532 if (up->port.line == up->port.cons->index) { in serial_omap_rlsi()
534 lsr |= up->lsr_break_flag; in serial_omap_rlsi()
537 uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag); in serial_omap_rlsi()
540 static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rdi() argument
548 ch = serial_in(up, UART_RX); in serial_omap_rdi()
549 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_rdi()
550 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX) && in serial_omap_rdi()
551 up->rs485_tx_filter_count) { in serial_omap_rdi()
552 up->rs485_tx_filter_count--; in serial_omap_rdi()
557 up->port.icount.rx++; in serial_omap_rdi()
559 if (uart_handle_sysrq_char(&up->port, ch)) in serial_omap_rdi()
562 uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag); in serial_omap_rdi()
572 struct uart_omap_port *up = dev_id; in serial_omap_irq() local
578 spin_lock(&up->port.lock); in serial_omap_irq()
579 pm_runtime_get_sync(up->dev); in serial_omap_irq()
582 iir = serial_in(up, UART_IIR); in serial_omap_irq()
587 lsr = serial_in(up, UART_LSR); in serial_omap_irq()
594 check_modem_status(up); in serial_omap_irq()
597 transmit_chars(up, lsr); in serial_omap_irq()
601 serial_omap_rdi(up, lsr); in serial_omap_irq()
604 serial_omap_rlsi(up, lsr); in serial_omap_irq()
615 spin_unlock(&up->port.lock); in serial_omap_irq()
617 tty_flip_buffer_push(&up->port.state->port); in serial_omap_irq()
619 pm_runtime_mark_last_busy(up->dev); in serial_omap_irq()
620 pm_runtime_put_autosuspend(up->dev); in serial_omap_irq()
621 up->port_activity = jiffies; in serial_omap_irq()
628 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_tx_empty() local
632 pm_runtime_get_sync(up->dev); in serial_omap_tx_empty()
633 dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); in serial_omap_tx_empty()
634 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_tx_empty()
635 ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; in serial_omap_tx_empty()
636 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_tx_empty()
637 pm_runtime_mark_last_busy(up->dev); in serial_omap_tx_empty()
638 pm_runtime_put_autosuspend(up->dev); in serial_omap_tx_empty()
644 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_get_mctrl() local
648 pm_runtime_get_sync(up->dev); in serial_omap_get_mctrl()
649 status = check_modem_status(up); in serial_omap_get_mctrl()
650 pm_runtime_mark_last_busy(up->dev); in serial_omap_get_mctrl()
651 pm_runtime_put_autosuspend(up->dev); in serial_omap_get_mctrl()
653 dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); in serial_omap_get_mctrl()
668 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_mctrl() local
671 dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line); in serial_omap_set_mctrl()
683 pm_runtime_get_sync(up->dev); in serial_omap_set_mctrl()
684 old_mcr = serial_in(up, UART_MCR); in serial_omap_set_mctrl()
687 up->mcr = old_mcr | mcr; in serial_omap_set_mctrl()
688 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_mctrl()
691 lcr = serial_in(up, UART_LCR); in serial_omap_set_mctrl()
692 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_mctrl()
694 up->efr |= UART_EFR_RTS; in serial_omap_set_mctrl()
696 up->efr &= ~UART_EFR_RTS; in serial_omap_set_mctrl()
697 serial_out(up, UART_EFR, up->efr); in serial_omap_set_mctrl()
698 serial_out(up, UART_LCR, lcr); in serial_omap_set_mctrl()
700 pm_runtime_mark_last_busy(up->dev); in serial_omap_set_mctrl()
701 pm_runtime_put_autosuspend(up->dev); in serial_omap_set_mctrl()
706 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_break_ctl() local
709 dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); in serial_omap_break_ctl()
710 pm_runtime_get_sync(up->dev); in serial_omap_break_ctl()
711 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_break_ctl()
713 up->lcr |= UART_LCR_SBC; in serial_omap_break_ctl()
715 up->lcr &= ~UART_LCR_SBC; in serial_omap_break_ctl()
716 serial_out(up, UART_LCR, up->lcr); in serial_omap_break_ctl()
717 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_break_ctl()
718 pm_runtime_mark_last_busy(up->dev); in serial_omap_break_ctl()
719 pm_runtime_put_autosuspend(up->dev); in serial_omap_break_ctl()
724 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_startup() local
731 retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags, in serial_omap_startup()
732 up->name, up); in serial_omap_startup()
737 if (up->wakeirq) { in serial_omap_startup()
738 retval = dev_pm_set_dedicated_wake_irq(up->dev, up->wakeirq); in serial_omap_startup()
740 free_irq(up->port.irq, up); in serial_omap_startup()
745 dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); in serial_omap_startup()
747 pm_runtime_get_sync(up->dev); in serial_omap_startup()
752 serial_omap_clear_fifos(up); in serial_omap_startup()
757 (void) serial_in(up, UART_LSR); in serial_omap_startup()
758 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_startup()
759 (void) serial_in(up, UART_RX); in serial_omap_startup()
760 (void) serial_in(up, UART_IIR); in serial_omap_startup()
761 (void) serial_in(up, UART_MSR); in serial_omap_startup()
766 serial_out(up, UART_LCR, UART_LCR_WLEN8); in serial_omap_startup()
767 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_startup()
771 up->port.mctrl |= TIOCM_OUT2; in serial_omap_startup()
772 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_startup()
773 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_startup()
775 up->msr_saved_flags = 0; in serial_omap_startup()
781 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial_omap_startup()
782 serial_out(up, UART_IER, up->ier); in serial_omap_startup()
785 up->wer = OMAP_UART_WER_MOD_WKUP; in serial_omap_startup()
786 if (up->features & OMAP_UART_WER_HAS_TX_WAKEUP) in serial_omap_startup()
787 up->wer |= OMAP_UART_TX_WAKEUP_EN; in serial_omap_startup()
789 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_startup()
791 pm_runtime_mark_last_busy(up->dev); in serial_omap_startup()
792 pm_runtime_put_autosuspend(up->dev); in serial_omap_startup()
793 up->port_activity = jiffies; in serial_omap_startup()
799 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_shutdown() local
802 dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); in serial_omap_shutdown()
804 pm_runtime_get_sync(up->dev); in serial_omap_shutdown()
808 up->ier = 0; in serial_omap_shutdown()
809 serial_out(up, UART_IER, 0); in serial_omap_shutdown()
811 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_shutdown()
812 up->port.mctrl &= ~TIOCM_OUT2; in serial_omap_shutdown()
813 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_shutdown()
814 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_shutdown()
819 serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC); in serial_omap_shutdown()
820 serial_omap_clear_fifos(up); in serial_omap_shutdown()
825 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_shutdown()
826 (void) serial_in(up, UART_RX); in serial_omap_shutdown()
828 pm_runtime_mark_last_busy(up->dev); in serial_omap_shutdown()
829 pm_runtime_put_autosuspend(up->dev); in serial_omap_shutdown()
830 free_irq(up->port.irq, up); in serial_omap_shutdown()
831 dev_pm_clear_wake_irq(up->dev); in serial_omap_shutdown()
836 struct uart_omap_port *up = container_of(work, struct uart_omap_port, in serial_omap_uart_qos_work() local
839 cpu_latency_qos_update_request(&up->pm_qos_request, up->latency); in serial_omap_uart_qos_work()
846 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_termios() local
884 up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8); in serial_omap_set_termios()
885 up->latency = up->calc_latency; in serial_omap_set_termios()
886 schedule_work(&up->qos_work); in serial_omap_set_termios()
888 up->dll = quot & 0xff; in serial_omap_set_termios()
889 up->dlh = quot >> 8; in serial_omap_set_termios()
890 up->mdr1 = UART_OMAP_MDR1_DISABLE; in serial_omap_set_termios()
892 up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 | in serial_omap_set_termios()
899 pm_runtime_get_sync(up->dev); in serial_omap_set_termios()
900 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_set_termios()
907 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in serial_omap_set_termios()
909 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in serial_omap_set_termios()
911 up->port.read_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
916 up->port.ignore_status_mask = 0; in serial_omap_set_termios()
918 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in serial_omap_set_termios()
920 up->port.ignore_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
926 up->port.ignore_status_mask |= UART_LSR_OE; in serial_omap_set_termios()
933 up->port.ignore_status_mask |= UART_LSR_DR; in serial_omap_set_termios()
938 up->ier &= ~UART_IER_MSI; in serial_omap_set_termios()
939 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial_omap_set_termios()
940 up->ier |= UART_IER_MSI; in serial_omap_set_termios()
941 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
942 serial_out(up, UART_LCR, cval); /* reset DLAB */ in serial_omap_set_termios()
943 up->lcr = cval; in serial_omap_set_termios()
944 up->scr = 0; in serial_omap_set_termios()
952 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
953 serial_out(up, UART_DLL, 0); in serial_omap_set_termios()
954 serial_out(up, UART_DLM, 0); in serial_omap_set_termios()
955 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
957 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
959 up->efr = serial_in(up, UART_EFR) & ~UART_EFR_ECB; in serial_omap_set_termios()
960 up->efr &= ~UART_EFR_SCD; in serial_omap_set_termios()
961 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
963 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
964 up->mcr = serial_in(up, UART_MCR) & ~UART_MCR_TCRTLR; in serial_omap_set_termios()
965 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
968 up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; in serial_omap_set_termios()
982 up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK; in serial_omap_set_termios()
983 up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK; in serial_omap_set_termios()
984 up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 | in serial_omap_set_termios()
987 serial_out(up, UART_FCR, up->fcr); in serial_omap_set_termios()
988 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
990 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_set_termios()
993 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
994 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
995 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
996 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
997 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1001 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
1002 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
1004 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
1006 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1007 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1009 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
1010 serial_out(up, UART_IER, 0); in serial_omap_set_termios()
1011 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1013 serial_out(up, UART_DLL, up->dll); /* LS of divisor */ in serial_omap_set_termios()
1014 serial_out(up, UART_DLM, up->dlh); /* MS of divisor */ in serial_omap_set_termios()
1016 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
1017 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
1018 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1020 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1021 serial_out(up, UART_LCR, cval); in serial_omap_set_termios()
1024 up->mdr1 = UART_OMAP_MDR1_13X_MODE; in serial_omap_set_termios()
1026 up->mdr1 = UART_OMAP_MDR1_16X_MODE; in serial_omap_set_termios()
1028 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
1029 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
1031 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
1034 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1037 serial_out(up, UART_XON1, termios->c_cc[VSTART]); in serial_omap_set_termios()
1038 serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); in serial_omap_set_termios()
1041 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1042 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1043 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
1045 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); in serial_omap_set_termios()
1047 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in serial_omap_set_termios()
1049 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { in serial_omap_set_termios()
1051 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in serial_omap_set_termios()
1052 up->efr |= UART_EFR_CTS; in serial_omap_set_termios()
1055 up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); in serial_omap_set_termios()
1058 if (up->port.flags & UPF_SOFT_FLOW) { in serial_omap_set_termios()
1060 up->efr &= OMAP_UART_SW_CLR; in serial_omap_set_termios()
1068 up->efr |= OMAP_UART_SW_RX; in serial_omap_set_termios()
1076 up->port.status |= UPSTAT_AUTOXOFF; in serial_omap_set_termios()
1077 up->efr |= OMAP_UART_SW_TX; in serial_omap_set_termios()
1087 up->mcr |= UART_MCR_XONANY; in serial_omap_set_termios()
1089 up->mcr &= ~UART_MCR_XONANY; in serial_omap_set_termios()
1091 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
1092 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1093 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1094 serial_out(up, UART_LCR, up->lcr); in serial_omap_set_termios()
1096 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_set_termios()
1098 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_set_termios()
1099 pm_runtime_mark_last_busy(up->dev); in serial_omap_set_termios()
1100 pm_runtime_put_autosuspend(up->dev); in serial_omap_set_termios()
1101 dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); in serial_omap_set_termios()
1108 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_pm() local
1111 dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); in serial_omap_pm()
1113 pm_runtime_get_sync(up->dev); in serial_omap_pm()
1114 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1115 efr = serial_in(up, UART_EFR); in serial_omap_pm()
1116 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in serial_omap_pm()
1117 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1119 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in serial_omap_pm()
1120 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1121 serial_out(up, UART_EFR, efr); in serial_omap_pm()
1122 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1124 pm_runtime_mark_last_busy(up->dev); in serial_omap_pm()
1125 pm_runtime_put_autosuspend(up->dev); in serial_omap_pm()
1141 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_port() local
1143 dev_dbg(up->port.dev, "serial_omap_config_port+%d\n", in serial_omap_config_port()
1144 up->port.line); in serial_omap_config_port()
1145 up->port.type = PORT_OMAP; in serial_omap_config_port()
1146 up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW; in serial_omap_config_port()
1160 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_type() local
1162 dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line); in serial_omap_type()
1163 return up->name; in serial_omap_type()
1168 static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) in wait_for_xmitr() argument
1174 status = serial_in(up, UART_LSR); in wait_for_xmitr()
1177 up->lsr_break_flag = UART_LSR_BI; in wait_for_xmitr()
1185 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
1188 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
1190 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
1203 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_put_char() local
1205 pm_runtime_get_sync(up->dev); in serial_omap_poll_put_char()
1206 wait_for_xmitr(up); in serial_omap_poll_put_char()
1207 serial_out(up, UART_TX, ch); in serial_omap_poll_put_char()
1208 pm_runtime_mark_last_busy(up->dev); in serial_omap_poll_put_char()
1209 pm_runtime_put_autosuspend(up->dev); in serial_omap_poll_put_char()
1214 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_get_char() local
1217 pm_runtime_get_sync(up->dev); in serial_omap_poll_get_char()
1218 status = serial_in(up, UART_LSR); in serial_omap_poll_get_char()
1224 status = serial_in(up, UART_RX); in serial_omap_poll_get_char()
1227 pm_runtime_mark_last_busy(up->dev); in serial_omap_poll_get_char()
1228 pm_runtime_put_autosuspend(up->dev); in serial_omap_poll_get_char()
1297 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_console_putchar() local
1299 wait_for_xmitr(up); in serial_omap_console_putchar()
1300 serial_out(up, UART_TX, ch); in serial_omap_console_putchar()
1307 struct uart_omap_port *up = serial_omap_console_ports[co->index]; in serial_omap_console_write() local
1312 pm_runtime_get_sync(up->dev); in serial_omap_console_write()
1315 if (up->port.sysrq) in serial_omap_console_write()
1318 locked = spin_trylock(&up->port.lock); in serial_omap_console_write()
1320 spin_lock(&up->port.lock); in serial_omap_console_write()
1325 ier = serial_in(up, UART_IER); in serial_omap_console_write()
1326 serial_out(up, UART_IER, 0); in serial_omap_console_write()
1328 uart_console_write(&up->port, s, count, serial_omap_console_putchar); in serial_omap_console_write()
1334 wait_for_xmitr(up); in serial_omap_console_write()
1335 serial_out(up, UART_IER, ier); in serial_omap_console_write()
1343 if (up->msr_saved_flags) in serial_omap_console_write()
1344 check_modem_status(up); in serial_omap_console_write()
1346 pm_runtime_mark_last_busy(up->dev); in serial_omap_console_write()
1347 pm_runtime_put_autosuspend(up->dev); in serial_omap_console_write()
1349 spin_unlock(&up->port.lock); in serial_omap_console_write()
1356 struct uart_omap_port *up; in serial_omap_console_setup() local
1364 up = serial_omap_console_ports[co->index]; in serial_omap_console_setup()
1369 return uart_set_options(&up->port, co, baud, parity, bits, flow); in serial_omap_console_setup()
1382 static void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1384 serial_omap_console_ports[up->port.line] = up; in serial_omap_add_console_port()
1393 static inline void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1402 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_rs485() local
1406 pm_runtime_get_sync(up->dev); in serial_omap_config_rs485()
1409 mode = up->ier; in serial_omap_config_rs485()
1410 up->ier = 0; in serial_omap_config_rs485()
1411 serial_out(up, UART_IER, 0); in serial_omap_config_rs485()
1420 if (up->rts_gpiod) { in serial_omap_config_rs485()
1425 gpiod_set_value(up->rts_gpiod, val); in serial_omap_config_rs485()
1429 up->ier = mode; in serial_omap_config_rs485()
1430 serial_out(up, UART_IER, up->ier); in serial_omap_config_rs485()
1436 (up->scr & OMAP_UART_SCR_TX_EMPTY)) { in serial_omap_config_rs485()
1437 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_config_rs485()
1438 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_config_rs485()
1441 pm_runtime_mark_last_busy(up->dev); in serial_omap_config_rs485()
1442 pm_runtime_put_autosuspend(up->dev); in serial_omap_config_rs485()
1484 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_prepare() local
1486 up->is_suspending = true; in serial_omap_prepare()
1493 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_complete() local
1495 up->is_suspending = false; in serial_omap_complete()
1500 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_suspend() local
1502 uart_suspend_port(&serial_omap_reg, &up->port); in serial_omap_suspend()
1503 flush_work(&up->qos_work); in serial_omap_suspend()
1506 serial_omap_enable_wakeup(up, true); in serial_omap_suspend()
1508 serial_omap_enable_wakeup(up, false); in serial_omap_suspend()
1515 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_resume() local
1518 serial_omap_enable_wakeup(up, false); in serial_omap_resume()
1520 uart_resume_port(&serial_omap_reg, &up->port); in serial_omap_resume()
1529 static void omap_serial_fill_features_erratas(struct uart_omap_port *up) in omap_serial_fill_features_erratas() argument
1534 mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift)); in omap_serial_fill_features_erratas()
1554 dev_warn(up->dev, in omap_serial_fill_features_erratas()
1556 up->name); in omap_serial_fill_features_erratas()
1567 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1571 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1573 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1576 up->errata |= UART_ERRATA_i202_MDR1_ACCESS; in omap_serial_fill_features_erratas()
1577 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1600 static int serial_omap_probe_rs485(struct uart_omap_port *up, in serial_omap_probe_rs485() argument
1603 struct serial_rs485 *rs485conf = &up->port.rs485; in serial_omap_probe_rs485()
1609 up->rts_gpiod = NULL; in serial_omap_probe_rs485()
1614 ret = uart_get_rs485_mode(&up->port); in serial_omap_probe_rs485()
1629 up->rts_gpiod = devm_gpiod_get_optional(dev, "rts", gflags); in serial_omap_probe_rs485()
1630 if (IS_ERR(up->rts_gpiod)) { in serial_omap_probe_rs485()
1631 ret = PTR_ERR(up->rts_gpiod); in serial_omap_probe_rs485()
1638 up->rts_gpiod = NULL; in serial_omap_probe_rs485()
1640 gpiod_set_consumer_name(up->rts_gpiod, "omap-serial"); in serial_omap_probe_rs485()
1649 struct uart_omap_port *up; in serial_omap_probe() local
1670 up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL); in serial_omap_probe()
1671 if (!up) in serial_omap_probe()
1679 up->dev = &pdev->dev; in serial_omap_probe()
1680 up->port.dev = &pdev->dev; in serial_omap_probe()
1681 up->port.type = PORT_OMAP; in serial_omap_probe()
1682 up->port.iotype = UPIO_MEM; in serial_omap_probe()
1683 up->port.irq = uartirq; in serial_omap_probe()
1684 up->port.regshift = 2; in serial_omap_probe()
1685 up->port.fifosize = 64; in serial_omap_probe()
1686 up->port.ops = &serial_omap_pops; in serial_omap_probe()
1687 up->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_OMAP_CONSOLE); in serial_omap_probe()
1699 up->port.line = ret; in serial_omap_probe()
1701 if (up->port.line >= OMAP_MAX_HSUART_PORTS) { in serial_omap_probe()
1702 dev_err(&pdev->dev, "uart ID %d > MAX %d.\n", up->port.line, in serial_omap_probe()
1708 up->wakeirq = wakeirq; in serial_omap_probe()
1709 if (!up->wakeirq) in serial_omap_probe()
1710 dev_info(up->port.dev, "no wakeirq for uart%d\n", in serial_omap_probe()
1711 up->port.line); in serial_omap_probe()
1713 ret = serial_omap_probe_rs485(up, &pdev->dev); in serial_omap_probe()
1717 sprintf(up->name, "OMAP UART%d", up->port.line); in serial_omap_probe()
1718 up->port.mapbase = mem->start; in serial_omap_probe()
1719 up->port.membase = base; in serial_omap_probe()
1720 up->port.flags = omap_up_info->flags; in serial_omap_probe()
1721 up->port.uartclk = omap_up_info->uartclk; in serial_omap_probe()
1722 up->port.rs485_config = serial_omap_config_rs485; in serial_omap_probe()
1723 if (!up->port.uartclk) { in serial_omap_probe()
1724 up->port.uartclk = DEFAULT_CLK_SPEED; in serial_omap_probe()
1730 up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_probe()
1731 up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_probe()
1732 cpu_latency_qos_add_request(&up->pm_qos_request, up->latency); in serial_omap_probe()
1733 INIT_WORK(&up->qos_work, serial_omap_uart_qos_work); in serial_omap_probe()
1735 platform_set_drvdata(pdev, up); in serial_omap_probe()
1739 device_init_wakeup(up->dev, true); in serial_omap_probe()
1749 omap_serial_fill_features_erratas(up); in serial_omap_probe()
1751 ui[up->port.line] = up; in serial_omap_probe()
1752 serial_omap_add_console_port(up); in serial_omap_probe()
1754 ret = uart_add_one_port(&serial_omap_reg, &up->port); in serial_omap_probe()
1758 pm_runtime_mark_last_busy(up->dev); in serial_omap_probe()
1759 pm_runtime_put_autosuspend(up->dev); in serial_omap_probe()
1766 cpu_latency_qos_remove_request(&up->pm_qos_request); in serial_omap_probe()
1767 device_init_wakeup(up->dev, false); in serial_omap_probe()
1775 struct uart_omap_port *up = platform_get_drvdata(dev); in serial_omap_remove() local
1777 pm_runtime_get_sync(up->dev); in serial_omap_remove()
1779 uart_remove_one_port(&serial_omap_reg, &up->port); in serial_omap_remove()
1781 pm_runtime_dont_use_autosuspend(up->dev); in serial_omap_remove()
1782 pm_runtime_put_sync(up->dev); in serial_omap_remove()
1783 pm_runtime_disable(up->dev); in serial_omap_remove()
1784 cpu_latency_qos_remove_request(&up->pm_qos_request); in serial_omap_remove()
1799 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) in serial_omap_mdr1_errataset() argument
1803 serial_out(up, UART_OMAP_MDR1, mdr1); in serial_omap_mdr1_errataset()
1805 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in serial_omap_mdr1_errataset()
1811 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in serial_omap_mdr1_errataset()
1816 dev_crit(up->dev, "Errata i202: timedout %x\n", in serial_omap_mdr1_errataset()
1817 serial_in(up, UART_LSR)); in serial_omap_mdr1_errataset()
1825 static void serial_omap_restore_context(struct uart_omap_port *up) in serial_omap_restore_context() argument
1827 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1828 serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1830 serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); 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_EFR, UART_EFR_ECB); in serial_omap_restore_context()
1834 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1835 serial_out(up, UART_IER, 0x0); in serial_omap_restore_context()
1836 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1837 serial_out(up, UART_DLL, up->dll); in serial_omap_restore_context()
1838 serial_out(up, UART_DLM, up->dlh); in serial_omap_restore_context()
1839 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1840 serial_out(up, UART_IER, up->ier); in serial_omap_restore_context()
1841 serial_out(up, UART_FCR, up->fcr); in serial_omap_restore_context()
1842 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_restore_context()
1843 serial_out(up, UART_MCR, up->mcr); in serial_omap_restore_context()
1844 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1845 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_restore_context()
1846 serial_out(up, UART_EFR, up->efr); in serial_omap_restore_context()
1847 serial_out(up, UART_LCR, up->lcr); in serial_omap_restore_context()
1848 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1849 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_restore_context()
1851 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_restore_context()
1852 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_restore_context()
1857 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_suspend() local
1859 if (!up) in serial_omap_runtime_suspend()
1868 if (up->is_suspending && !console_suspend_enabled && in serial_omap_runtime_suspend()
1869 uart_console(&up->port)) in serial_omap_runtime_suspend()
1872 up->context_loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_suspend()
1874 serial_omap_enable_wakeup(up, true); in serial_omap_runtime_suspend()
1876 up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_runtime_suspend()
1877 schedule_work(&up->qos_work); in serial_omap_runtime_suspend()
1884 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_resume() local
1886 int loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_resume()
1888 serial_omap_enable_wakeup(up, false); in serial_omap_runtime_resume()
1893 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1894 } else if (up->context_loss_cnt != loss_cnt) { in serial_omap_runtime_resume()
1895 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1897 up->latency = up->calc_latency; in serial_omap_runtime_resume()
1898 schedule_work(&up->qos_work); in serial_omap_runtime_resume()