Lines Matching full: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 up->ier |= UART_IER_MSI; in serial_omap_enable_ms()
280 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ms()
285 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_tx() local
290 if (up->scr & OMAP_UART_SCR_TX_EMPTY) { in serial_omap_stop_tx()
298 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
299 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
302 if (up->rts_gpiod && in serial_omap_stop_tx()
303 gpiod_get_value(up->rts_gpiod) != res) { in serial_omap_stop_tx()
307 gpiod_set_value(up->rts_gpiod, res); in serial_omap_stop_tx()
318 up->scr |= OMAP_UART_SCR_TX_EMPTY; in serial_omap_stop_tx()
319 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_stop_tx()
324 if (up->ier & UART_IER_THRI) { in serial_omap_stop_tx()
325 up->ier &= ~UART_IER_THRI; in serial_omap_stop_tx()
326 serial_out(up, UART_IER, up->ier); in serial_omap_stop_tx()
332 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_stop_rx() local
334 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_stop_rx()
335 up->port.read_status_mask &= ~UART_LSR_DR; in serial_omap_stop_rx()
336 serial_out(up, UART_IER, up->ier); in serial_omap_stop_rx()
339 static void transmit_chars(struct uart_omap_port *up, unsigned int lsr) in transmit_chars() argument
341 struct circ_buf *xmit = &up->port.state->xmit; in transmit_chars()
344 if (up->port.x_char) { in transmit_chars()
345 serial_out(up, UART_TX, up->port.x_char); in transmit_chars()
346 up->port.icount.tx++; in transmit_chars()
347 up->port.x_char = 0; in transmit_chars()
348 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in transmit_chars()
349 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in transmit_chars()
350 up->rs485_tx_filter_count++; in transmit_chars()
354 if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { in transmit_chars()
355 serial_omap_stop_tx(&up->port); in transmit_chars()
358 count = up->port.fifosize / 4; in transmit_chars()
360 serial_out(up, UART_TX, xmit->buf[xmit->tail]); in transmit_chars()
362 up->port.icount.tx++; in transmit_chars()
363 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in transmit_chars()
364 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX)) in transmit_chars()
365 up->rs485_tx_filter_count++; in transmit_chars()
372 uart_write_wakeup(&up->port); in transmit_chars()
375 serial_omap_stop_tx(&up->port); in transmit_chars()
378 static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up) in serial_omap_enable_ier_thri() argument
380 if (!(up->ier & UART_IER_THRI)) { in serial_omap_enable_ier_thri()
381 up->ier |= UART_IER_THRI; in serial_omap_enable_ier_thri()
382 serial_out(up, UART_IER, up->ier); in serial_omap_enable_ier_thri()
388 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_start_tx() local
394 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_start_tx()
395 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_start_tx()
399 if (up->rts_gpiod && gpiod_get_value(up->rts_gpiod) != res) { in serial_omap_start_tx()
400 gpiod_set_value(up->rts_gpiod, res); in serial_omap_start_tx()
408 up->rs485_tx_filter_count = 0; in serial_omap_start_tx()
410 serial_omap_enable_ier_thri(up); in serial_omap_start_tx()
415 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_throttle() local
418 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_throttle()
419 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in serial_omap_throttle()
420 serial_out(up, UART_IER, up->ier); in serial_omap_throttle()
421 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_throttle()
426 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_unthrottle() local
429 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_unthrottle()
430 up->ier |= UART_IER_RLSI | UART_IER_RDI; in serial_omap_unthrottle()
431 serial_out(up, UART_IER, up->ier); in serial_omap_unthrottle()
432 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_unthrottle()
435 static unsigned int check_modem_status(struct uart_omap_port *up) in check_modem_status() argument
439 status = serial_in(up, UART_MSR); in check_modem_status()
440 status |= up->msr_saved_flags; in check_modem_status()
441 up->msr_saved_flags = 0; in check_modem_status()
445 if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && in check_modem_status()
446 up->port.state != NULL) { in check_modem_status()
448 up->port.icount.rng++; in check_modem_status()
450 up->port.icount.dsr++; in check_modem_status()
453 (&up->port, status & UART_MSR_DCD); in check_modem_status()
456 (&up->port, status & UART_MSR_CTS); in check_modem_status()
457 wake_up_interruptible(&up->port.state->port.delta_msr_wait); in check_modem_status()
463 static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rlsi() argument
472 serial_in(up, UART_RX); in serial_omap_rlsi()
473 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_rlsi()
474 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX) && in serial_omap_rlsi()
475 up->rs485_tx_filter_count) in serial_omap_rlsi()
476 up->rs485_tx_filter_count--; in serial_omap_rlsi()
479 up->port.icount.rx++; in serial_omap_rlsi()
485 up->port.icount.brk++; in serial_omap_rlsi()
492 if (uart_handle_break(&up->port)) in serial_omap_rlsi()
499 up->port.icount.parity++; in serial_omap_rlsi()
504 up->port.icount.frame++; in serial_omap_rlsi()
508 up->port.icount.overrun++; in serial_omap_rlsi()
511 if (up->port.line == up->port.cons->index) { in serial_omap_rlsi()
513 lsr |= up->lsr_break_flag; in serial_omap_rlsi()
516 uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag); in serial_omap_rlsi()
519 static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr) in serial_omap_rdi() argument
527 ch = serial_in(up, UART_RX); in serial_omap_rdi()
528 if ((up->port.rs485.flags & SER_RS485_ENABLED) && in serial_omap_rdi()
529 !(up->port.rs485.flags & SER_RS485_RX_DURING_TX) && in serial_omap_rdi()
530 up->rs485_tx_filter_count) { in serial_omap_rdi()
531 up->rs485_tx_filter_count--; in serial_omap_rdi()
536 up->port.icount.rx++; in serial_omap_rdi()
538 if (uart_handle_sysrq_char(&up->port, ch)) in serial_omap_rdi()
541 uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag); in serial_omap_rdi()
551 struct uart_omap_port *up = dev_id; in serial_omap_irq() local
557 spin_lock(&up->port.lock); in serial_omap_irq()
560 iir = serial_in(up, UART_IIR); in serial_omap_irq()
565 lsr = serial_in(up, UART_LSR); in serial_omap_irq()
572 check_modem_status(up); in serial_omap_irq()
575 transmit_chars(up, lsr); in serial_omap_irq()
579 serial_omap_rdi(up, lsr); in serial_omap_irq()
582 serial_omap_rlsi(up, lsr); in serial_omap_irq()
593 spin_unlock(&up->port.lock); in serial_omap_irq()
595 tty_flip_buffer_push(&up->port.state->port); in serial_omap_irq()
597 up->port_activity = jiffies; in serial_omap_irq()
604 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_tx_empty() local
608 dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); in serial_omap_tx_empty()
609 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_tx_empty()
610 ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; in serial_omap_tx_empty()
611 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_tx_empty()
618 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_get_mctrl() local
622 status = check_modem_status(up); in serial_omap_get_mctrl()
624 dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); in serial_omap_get_mctrl()
639 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_mctrl() local
642 dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line); in serial_omap_set_mctrl()
654 old_mcr = serial_in(up, UART_MCR); in serial_omap_set_mctrl()
657 up->mcr = old_mcr | mcr; in serial_omap_set_mctrl()
658 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_mctrl()
661 lcr = serial_in(up, UART_LCR); in serial_omap_set_mctrl()
662 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_mctrl()
664 up->efr |= UART_EFR_RTS; in serial_omap_set_mctrl()
666 up->efr &= ~UART_EFR_RTS; in serial_omap_set_mctrl()
667 serial_out(up, UART_EFR, up->efr); in serial_omap_set_mctrl()
668 serial_out(up, UART_LCR, lcr); in serial_omap_set_mctrl()
673 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_break_ctl() local
676 dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); in serial_omap_break_ctl()
677 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_break_ctl()
679 up->lcr |= UART_LCR_SBC; in serial_omap_break_ctl()
681 up->lcr &= ~UART_LCR_SBC; in serial_omap_break_ctl()
682 serial_out(up, UART_LCR, up->lcr); in serial_omap_break_ctl()
683 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_break_ctl()
688 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_startup() local
695 retval = request_irq(up->port.irq, serial_omap_irq, up->port.irqflags, in serial_omap_startup()
696 up->name, up); in serial_omap_startup()
700 /* Optional wake-up IRQ */ in serial_omap_startup()
701 if (up->wakeirq) { in serial_omap_startup()
702 retval = dev_pm_set_dedicated_wake_irq(up->dev, up->wakeirq); in serial_omap_startup()
704 free_irq(up->port.irq, up); in serial_omap_startup()
709 dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); in serial_omap_startup()
711 pm_runtime_get_sync(up->dev); in serial_omap_startup()
716 serial_omap_clear_fifos(up); in serial_omap_startup()
721 (void) serial_in(up, UART_LSR); in serial_omap_startup()
722 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_startup()
723 (void) serial_in(up, UART_RX); in serial_omap_startup()
724 (void) serial_in(up, UART_IIR); in serial_omap_startup()
725 (void) serial_in(up, UART_MSR); in serial_omap_startup()
730 serial_out(up, UART_LCR, UART_LCR_WLEN8); in serial_omap_startup()
731 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_startup()
735 up->port.mctrl |= TIOCM_OUT2; in serial_omap_startup()
736 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_startup()
737 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_startup()
739 up->msr_saved_flags = 0; in serial_omap_startup()
745 up->ier = UART_IER_RLSI | UART_IER_RDI; in serial_omap_startup()
746 serial_out(up, UART_IER, up->ier); in serial_omap_startup()
748 /* Enable module level wake up */ in serial_omap_startup()
749 up->wer = OMAP_UART_WER_MOD_WKUP; in serial_omap_startup()
750 if (up->features & OMAP_UART_WER_HAS_TX_WAKEUP) in serial_omap_startup()
751 up->wer |= OMAP_UART_TX_WAKEUP_EN; in serial_omap_startup()
753 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_startup()
755 up->port_activity = jiffies; in serial_omap_startup()
761 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_shutdown() local
764 dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); in serial_omap_shutdown()
769 up->ier = 0; in serial_omap_shutdown()
770 serial_out(up, UART_IER, 0); in serial_omap_shutdown()
772 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_shutdown()
773 up->port.mctrl &= ~TIOCM_OUT2; in serial_omap_shutdown()
774 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_shutdown()
775 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_shutdown()
780 serial_out(up, UART_LCR, serial_in(up, UART_LCR) & ~UART_LCR_SBC); in serial_omap_shutdown()
781 serial_omap_clear_fifos(up); in serial_omap_shutdown()
786 if (serial_in(up, UART_LSR) & UART_LSR_DR) in serial_omap_shutdown()
787 (void) serial_in(up, UART_RX); in serial_omap_shutdown()
789 pm_runtime_put_sync(up->dev); in serial_omap_shutdown()
790 free_irq(up->port.irq, up); in serial_omap_shutdown()
791 dev_pm_clear_wake_irq(up->dev); in serial_omap_shutdown()
796 struct uart_omap_port *up = container_of(work, struct uart_omap_port, in serial_omap_uart_qos_work() local
799 cpu_latency_qos_update_request(&up->pm_qos_request, up->latency); in serial_omap_uart_qos_work()
806 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_set_termios() local
844 up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8); in serial_omap_set_termios()
845 up->latency = up->calc_latency; in serial_omap_set_termios()
846 schedule_work(&up->qos_work); in serial_omap_set_termios()
848 up->dll = quot & 0xff; in serial_omap_set_termios()
849 up->dlh = quot >> 8; in serial_omap_set_termios()
850 up->mdr1 = UART_OMAP_MDR1_DISABLE; in serial_omap_set_termios()
852 up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 | in serial_omap_set_termios()
859 spin_lock_irqsave(&up->port.lock, flags); in serial_omap_set_termios()
866 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in serial_omap_set_termios()
868 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in serial_omap_set_termios()
870 up->port.read_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
875 up->port.ignore_status_mask = 0; in serial_omap_set_termios()
877 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in serial_omap_set_termios()
879 up->port.ignore_status_mask |= UART_LSR_BI; in serial_omap_set_termios()
885 up->port.ignore_status_mask |= UART_LSR_OE; in serial_omap_set_termios()
892 up->port.ignore_status_mask |= UART_LSR_DR; in serial_omap_set_termios()
897 up->ier &= ~UART_IER_MSI; in serial_omap_set_termios()
898 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in serial_omap_set_termios()
899 up->ier |= UART_IER_MSI; in serial_omap_set_termios()
900 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
901 serial_out(up, UART_LCR, cval); /* reset DLAB */ in serial_omap_set_termios()
902 up->lcr = cval; in serial_omap_set_termios()
903 up->scr = 0; in serial_omap_set_termios()
911 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
912 serial_out(up, UART_DLL, 0); in serial_omap_set_termios()
913 serial_out(up, UART_DLM, 0); in serial_omap_set_termios()
914 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
916 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
918 up->efr = serial_in(up, UART_EFR) & ~UART_EFR_ECB; in serial_omap_set_termios()
919 up->efr &= ~UART_EFR_SCD; in serial_omap_set_termios()
920 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
922 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
923 up->mcr = serial_in(up, UART_MCR) & ~UART_MCR_TCRTLR; in serial_omap_set_termios()
924 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
927 up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; in serial_omap_set_termios()
941 up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK; in serial_omap_set_termios()
942 up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK; in serial_omap_set_termios()
943 up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 | in serial_omap_set_termios()
946 serial_out(up, UART_FCR, up->fcr); in serial_omap_set_termios()
947 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
949 serial_out(up, UART_OMAP_SCR, up->scr); 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_MCR, up->mcr); in serial_omap_set_termios()
954 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
955 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
956 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
960 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
961 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
963 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
965 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
966 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
968 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
969 serial_out(up, UART_IER, 0); in serial_omap_set_termios()
970 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
972 serial_out(up, UART_DLL, up->dll); /* LS of divisor */ in serial_omap_set_termios()
973 serial_out(up, UART_DLM, up->dlh); /* MS of divisor */ in serial_omap_set_termios()
975 serial_out(up, UART_LCR, 0); in serial_omap_set_termios()
976 serial_out(up, UART_IER, up->ier); in serial_omap_set_termios()
977 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
979 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
980 serial_out(up, UART_LCR, cval); in serial_omap_set_termios()
983 up->mdr1 = UART_OMAP_MDR1_13X_MODE; in serial_omap_set_termios()
985 up->mdr1 = UART_OMAP_MDR1_16X_MODE; in serial_omap_set_termios()
987 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_set_termios()
988 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_set_termios()
990 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_set_termios()
993 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
996 serial_out(up, UART_XON1, termios->c_cc[VSTART]); in serial_omap_set_termios()
997 serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); in serial_omap_set_termios()
1000 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); in serial_omap_set_termios()
1001 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_set_termios()
1002 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); in serial_omap_set_termios()
1004 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); in serial_omap_set_termios()
1006 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in serial_omap_set_termios()
1008 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW) { in serial_omap_set_termios()
1010 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in serial_omap_set_termios()
1011 up->efr |= UART_EFR_CTS; in serial_omap_set_termios()
1014 up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); in serial_omap_set_termios()
1017 if (up->port.flags & UPF_SOFT_FLOW) { in serial_omap_set_termios()
1019 up->efr &= OMAP_UART_SW_CLR; in serial_omap_set_termios()
1027 up->efr |= OMAP_UART_SW_RX; in serial_omap_set_termios()
1035 up->port.status |= UPSTAT_AUTOXOFF; in serial_omap_set_termios()
1036 up->efr |= OMAP_UART_SW_TX; in serial_omap_set_termios()
1046 up->mcr |= UART_MCR_XONANY; in serial_omap_set_termios()
1048 up->mcr &= ~UART_MCR_XONANY; in serial_omap_set_termios()
1050 serial_out(up, UART_MCR, up->mcr); in serial_omap_set_termios()
1051 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_set_termios()
1052 serial_out(up, UART_EFR, up->efr); in serial_omap_set_termios()
1053 serial_out(up, UART_LCR, up->lcr); in serial_omap_set_termios()
1055 serial_omap_set_mctrl(&up->port, up->port.mctrl); in serial_omap_set_termios()
1057 spin_unlock_irqrestore(&up->port.lock, flags); in serial_omap_set_termios()
1058 dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); in serial_omap_set_termios()
1065 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_pm() local
1068 dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); in serial_omap_pm()
1070 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1071 efr = serial_in(up, UART_EFR); in serial_omap_pm()
1072 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in serial_omap_pm()
1073 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1075 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in serial_omap_pm()
1076 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in serial_omap_pm()
1077 serial_out(up, UART_EFR, efr); in serial_omap_pm()
1078 serial_out(up, UART_LCR, 0); in serial_omap_pm()
1094 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_port() local
1096 dev_dbg(up->port.dev, "serial_omap_config_port+%d\n", in serial_omap_config_port()
1097 up->port.line); in serial_omap_config_port()
1098 up->port.type = PORT_OMAP; in serial_omap_config_port()
1099 up->port.flags |= UPF_SOFT_FLOW | UPF_HARD_FLOW; in serial_omap_config_port()
1113 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_type() local
1115 dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line); in serial_omap_type()
1116 return up->name; in serial_omap_type()
1121 static void __maybe_unused wait_for_xmitr(struct uart_omap_port *up) in wait_for_xmitr() argument
1125 /* Wait up to 10ms for the character(s) to be sent. */ in wait_for_xmitr()
1127 status = serial_in(up, UART_LSR); in wait_for_xmitr()
1130 up->lsr_break_flag = UART_LSR_BI; in wait_for_xmitr()
1137 /* Wait up to 1s for flow control if necessary */ in wait_for_xmitr()
1138 if (up->port.flags & UPF_CONS_FLOW) { in wait_for_xmitr()
1141 unsigned int msr = serial_in(up, UART_MSR); in wait_for_xmitr()
1143 up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; in wait_for_xmitr()
1156 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_put_char() local
1158 wait_for_xmitr(up); in serial_omap_poll_put_char()
1159 serial_out(up, UART_TX, ch); in serial_omap_poll_put_char()
1164 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_poll_get_char() local
1167 status = serial_in(up, UART_LSR); in serial_omap_poll_get_char()
1173 status = serial_in(up, UART_RX); in serial_omap_poll_get_char()
1243 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_console_putchar() local
1245 wait_for_xmitr(up); in serial_omap_console_putchar()
1246 serial_out(up, UART_TX, ch); in serial_omap_console_putchar()
1253 struct uart_omap_port *up = serial_omap_console_ports[co->index]; in serial_omap_console_write() local
1259 if (up->port.sysrq) in serial_omap_console_write()
1262 locked = spin_trylock(&up->port.lock); in serial_omap_console_write()
1264 spin_lock(&up->port.lock); in serial_omap_console_write()
1269 ier = serial_in(up, UART_IER); in serial_omap_console_write()
1270 serial_out(up, UART_IER, 0); in serial_omap_console_write()
1272 uart_console_write(&up->port, s, count, serial_omap_console_putchar); in serial_omap_console_write()
1278 wait_for_xmitr(up); in serial_omap_console_write()
1279 serial_out(up, UART_IER, ier); in serial_omap_console_write()
1287 if (up->msr_saved_flags) in serial_omap_console_write()
1288 check_modem_status(up); in serial_omap_console_write()
1291 spin_unlock(&up->port.lock); in serial_omap_console_write()
1298 struct uart_omap_port *up; in serial_omap_console_setup() local
1306 up = serial_omap_console_ports[co->index]; in serial_omap_console_setup()
1311 return uart_set_options(&up->port, co, baud, parity, bits, flow); in serial_omap_console_setup()
1324 static void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1326 serial_omap_console_ports[up->port.line] = up; in serial_omap_add_console_port()
1335 static inline void serial_omap_add_console_port(struct uart_omap_port *up) in serial_omap_add_console_port() argument
1344 struct uart_omap_port *up = to_uart_omap_port(port); in serial_omap_config_rs485() local
1349 mode = up->ier; in serial_omap_config_rs485()
1350 up->ier = 0; in serial_omap_config_rs485()
1351 serial_out(up, UART_IER, 0); in serial_omap_config_rs485()
1360 if (up->rts_gpiod) { in serial_omap_config_rs485()
1365 gpiod_set_value(up->rts_gpiod, val); in serial_omap_config_rs485()
1369 up->ier = mode; in serial_omap_config_rs485()
1370 serial_out(up, UART_IER, up->ier); in serial_omap_config_rs485()
1376 (up->scr & OMAP_UART_SCR_TX_EMPTY)) { in serial_omap_config_rs485()
1377 up->scr &= ~OMAP_UART_SCR_TX_EMPTY; in serial_omap_config_rs485()
1378 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_config_rs485()
1421 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_prepare() local
1423 up->is_suspending = true; in serial_omap_prepare()
1430 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_complete() local
1432 up->is_suspending = false; in serial_omap_complete()
1437 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_suspend() local
1439 uart_suspend_port(&serial_omap_reg, &up->port); in serial_omap_suspend()
1440 flush_work(&up->qos_work); in serial_omap_suspend()
1443 serial_omap_enable_wakeup(up, true); in serial_omap_suspend()
1445 serial_omap_enable_wakeup(up, false); in serial_omap_suspend()
1452 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_resume() local
1455 serial_omap_enable_wakeup(up, false); in serial_omap_resume()
1457 uart_resume_port(&serial_omap_reg, &up->port); in serial_omap_resume()
1466 static void omap_serial_fill_features_erratas(struct uart_omap_port *up) in omap_serial_fill_features_erratas() argument
1471 mvr = readl(up->port.membase + (UART_OMAP_MVER << up->port.regshift)); in omap_serial_fill_features_erratas()
1491 dev_warn(up->dev, in omap_serial_fill_features_erratas()
1493 up->name); in omap_serial_fill_features_erratas()
1504 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1508 up->errata |= (UART_ERRATA_i202_MDR1_ACCESS | in omap_serial_fill_features_erratas()
1510 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1513 up->errata |= UART_ERRATA_i202_MDR1_ACCESS; in omap_serial_fill_features_erratas()
1514 up->features |= OMAP_UART_WER_HAS_TX_WAKEUP; in omap_serial_fill_features_erratas()
1537 static int serial_omap_probe_rs485(struct uart_omap_port *up, in serial_omap_probe_rs485() argument
1540 struct serial_rs485 *rs485conf = &up->port.rs485; in serial_omap_probe_rs485()
1546 up->rts_gpiod = NULL; in serial_omap_probe_rs485()
1551 ret = uart_get_rs485_mode(&up->port); in serial_omap_probe_rs485()
1566 up->rts_gpiod = devm_gpiod_get_optional(dev, "rts", gflags); in serial_omap_probe_rs485()
1567 if (IS_ERR(up->rts_gpiod)) { in serial_omap_probe_rs485()
1568 ret = PTR_ERR(up->rts_gpiod); in serial_omap_probe_rs485()
1575 up->rts_gpiod = NULL; in serial_omap_probe_rs485()
1577 gpiod_set_consumer_name(up->rts_gpiod, "omap-serial"); in serial_omap_probe_rs485()
1586 struct uart_omap_port *up; in serial_omap_probe() local
1607 up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL); in serial_omap_probe()
1608 if (!up) in serial_omap_probe()
1616 up->dev = &pdev->dev; in serial_omap_probe()
1617 up->port.dev = &pdev->dev; in serial_omap_probe()
1618 up->port.type = PORT_OMAP; in serial_omap_probe()
1619 up->port.iotype = UPIO_MEM; in serial_omap_probe()
1620 up->port.irq = uartirq; in serial_omap_probe()
1621 up->port.regshift = 2; in serial_omap_probe()
1622 up->port.fifosize = 64; in serial_omap_probe()
1623 up->port.ops = &serial_omap_pops; in serial_omap_probe()
1624 up->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_OMAP_CONSOLE); in serial_omap_probe()
1636 up->port.line = ret; in serial_omap_probe()
1638 if (up->port.line >= OMAP_MAX_HSUART_PORTS) { in serial_omap_probe()
1639 dev_err(&pdev->dev, "uart ID %d > MAX %d.\n", up->port.line, in serial_omap_probe()
1645 up->wakeirq = wakeirq; in serial_omap_probe()
1646 if (!up->wakeirq) in serial_omap_probe()
1647 dev_info(up->port.dev, "no wakeirq for uart%d\n", in serial_omap_probe()
1648 up->port.line); in serial_omap_probe()
1650 ret = serial_omap_probe_rs485(up, &pdev->dev); in serial_omap_probe()
1654 sprintf(up->name, "OMAP UART%d", up->port.line); in serial_omap_probe()
1655 up->port.mapbase = mem->start; in serial_omap_probe()
1656 up->port.membase = base; in serial_omap_probe()
1657 up->port.flags = omap_up_info->flags; in serial_omap_probe()
1658 up->port.uartclk = omap_up_info->uartclk; in serial_omap_probe()
1659 up->port.rs485_config = serial_omap_config_rs485; in serial_omap_probe()
1660 if (!up->port.uartclk) { in serial_omap_probe()
1661 up->port.uartclk = DEFAULT_CLK_SPEED; in serial_omap_probe()
1667 up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_probe()
1668 up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_probe()
1669 cpu_latency_qos_add_request(&up->pm_qos_request, up->latency); in serial_omap_probe()
1670 INIT_WORK(&up->qos_work, serial_omap_uart_qos_work); in serial_omap_probe()
1672 platform_set_drvdata(pdev, up); in serial_omap_probe()
1676 device_init_wakeup(up->dev, true); in serial_omap_probe()
1682 omap_serial_fill_features_erratas(up); in serial_omap_probe()
1684 ui[up->port.line] = up; in serial_omap_probe()
1685 serial_omap_add_console_port(up); in serial_omap_probe()
1687 ret = uart_add_one_port(&serial_omap_reg, &up->port); in serial_omap_probe()
1696 cpu_latency_qos_remove_request(&up->pm_qos_request); in serial_omap_probe()
1697 device_init_wakeup(up->dev, false); in serial_omap_probe()
1705 struct uart_omap_port *up = platform_get_drvdata(dev); in serial_omap_remove() local
1707 pm_runtime_get_sync(up->dev); in serial_omap_remove()
1709 uart_remove_one_port(&serial_omap_reg, &up->port); in serial_omap_remove()
1711 pm_runtime_put_sync(up->dev); in serial_omap_remove()
1712 pm_runtime_disable(up->dev); in serial_omap_remove()
1713 cpu_latency_qos_remove_request(&up->pm_qos_request); in serial_omap_remove()
1728 static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) in serial_omap_mdr1_errataset() argument
1732 serial_out(up, UART_OMAP_MDR1, mdr1); in serial_omap_mdr1_errataset()
1734 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in serial_omap_mdr1_errataset()
1740 while (UART_LSR_THRE != (serial_in(up, UART_LSR) & in serial_omap_mdr1_errataset()
1745 dev_crit(up->dev, "Errata i202: timedout %x\n", in serial_omap_mdr1_errataset()
1746 serial_in(up, UART_LSR)); in serial_omap_mdr1_errataset()
1754 static void serial_omap_restore_context(struct uart_omap_port *up) in serial_omap_restore_context() argument
1756 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1757 serial_omap_mdr1_errataset(up, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1759 serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); in serial_omap_restore_context()
1761 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1762 serial_out(up, UART_EFR, UART_EFR_ECB); in serial_omap_restore_context()
1763 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1764 serial_out(up, UART_IER, 0x0); in serial_omap_restore_context()
1765 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1766 serial_out(up, UART_DLL, up->dll); in serial_omap_restore_context()
1767 serial_out(up, UART_DLM, up->dlh); in serial_omap_restore_context()
1768 serial_out(up, UART_LCR, 0x0); /* Operational mode */ in serial_omap_restore_context()
1769 serial_out(up, UART_IER, up->ier); in serial_omap_restore_context()
1770 serial_out(up, UART_FCR, up->fcr); in serial_omap_restore_context()
1771 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in serial_omap_restore_context()
1772 serial_out(up, UART_MCR, up->mcr); in serial_omap_restore_context()
1773 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); /* Config B mode */ in serial_omap_restore_context()
1774 serial_out(up, UART_OMAP_SCR, up->scr); in serial_omap_restore_context()
1775 serial_out(up, UART_EFR, up->efr); in serial_omap_restore_context()
1776 serial_out(up, UART_LCR, up->lcr); in serial_omap_restore_context()
1777 if (up->errata & UART_ERRATA_i202_MDR1_ACCESS) in serial_omap_restore_context()
1778 serial_omap_mdr1_errataset(up, up->mdr1); in serial_omap_restore_context()
1780 serial_out(up, UART_OMAP_MDR1, up->mdr1); in serial_omap_restore_context()
1781 serial_out(up, UART_OMAP_WER, up->wer); in serial_omap_restore_context()
1786 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_suspend() local
1788 if (!up) in serial_omap_runtime_suspend()
1797 if (up->is_suspending && !console_suspend_enabled && in serial_omap_runtime_suspend()
1798 uart_console(&up->port)) in serial_omap_runtime_suspend()
1801 up->context_loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_suspend()
1803 serial_omap_enable_wakeup(up, true); in serial_omap_runtime_suspend()
1805 up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE; in serial_omap_runtime_suspend()
1806 schedule_work(&up->qos_work); in serial_omap_runtime_suspend()
1813 struct uart_omap_port *up = dev_get_drvdata(dev); in serial_omap_runtime_resume() local
1815 int loss_cnt = serial_omap_get_context_loss_count(up); in serial_omap_runtime_resume()
1817 serial_omap_enable_wakeup(up, false); in serial_omap_runtime_resume()
1822 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1823 } else if (up->context_loss_cnt != loss_cnt) { in serial_omap_runtime_resume()
1824 serial_omap_restore_context(up); in serial_omap_runtime_resume()
1826 up->latency = up->calc_latency; in serial_omap_runtime_resume()
1827 schedule_work(&up->qos_work); in serial_omap_runtime_resume()