Lines Matching refs:port
68 struct tty_port port; member
90 static int sdio_uart_add_port(struct sdio_uart_port *port) in sdio_uart_add_port() argument
94 mutex_init(&port->func_lock); in sdio_uart_add_port()
95 spin_lock_init(&port->write_lock); in sdio_uart_add_port()
96 if (kfifo_alloc(&port->xmit_fifo, FIFO_SIZE, GFP_KERNEL)) in sdio_uart_add_port()
102 port->index = index; in sdio_uart_add_port()
103 sdio_uart_table[index] = port; in sdio_uart_add_port()
115 struct sdio_uart_port *port; in sdio_uart_port_get() local
121 port = sdio_uart_table[index]; in sdio_uart_port_get()
122 if (port) in sdio_uart_port_get()
123 tty_port_get(&port->port); in sdio_uart_port_get()
126 return port; in sdio_uart_port_get()
129 static void sdio_uart_port_put(struct sdio_uart_port *port) in sdio_uart_port_put() argument
131 tty_port_put(&port->port); in sdio_uart_port_put()
134 static void sdio_uart_port_remove(struct sdio_uart_port *port) in sdio_uart_port_remove() argument
139 sdio_uart_table[port->index] = NULL; in sdio_uart_port_remove()
149 mutex_lock(&port->port.mutex); in sdio_uart_port_remove()
150 mutex_lock(&port->func_lock); in sdio_uart_port_remove()
151 func = port->func; in sdio_uart_port_remove()
153 port->func = NULL; in sdio_uart_port_remove()
154 mutex_unlock(&port->func_lock); in sdio_uart_port_remove()
156 tty_port_tty_hangup(&port->port, false); in sdio_uart_port_remove()
157 mutex_unlock(&port->port.mutex); in sdio_uart_port_remove()
162 sdio_uart_port_put(port); in sdio_uart_port_remove()
165 static int sdio_uart_claim_func(struct sdio_uart_port *port) in sdio_uart_claim_func() argument
167 mutex_lock(&port->func_lock); in sdio_uart_claim_func()
168 if (unlikely(!port->func)) { in sdio_uart_claim_func()
169 mutex_unlock(&port->func_lock); in sdio_uart_claim_func()
172 if (likely(port->in_sdio_uart_irq != current)) in sdio_uart_claim_func()
173 sdio_claim_host(port->func); in sdio_uart_claim_func()
174 mutex_unlock(&port->func_lock); in sdio_uart_claim_func()
178 static inline void sdio_uart_release_func(struct sdio_uart_port *port) in sdio_uart_release_func() argument
180 if (likely(port->in_sdio_uart_irq != current)) in sdio_uart_release_func()
181 sdio_release_host(port->func); in sdio_uart_release_func()
184 static inline unsigned int sdio_in(struct sdio_uart_port *port, int offset) in sdio_in() argument
187 c = sdio_readb(port->func, port->regs_offset + offset, NULL); in sdio_in()
191 static inline void sdio_out(struct sdio_uart_port *port, int offset, int value) in sdio_out() argument
193 sdio_writeb(port->func, value, port->regs_offset + offset, NULL); in sdio_out()
196 static unsigned int sdio_uart_get_mctrl(struct sdio_uart_port *port) in sdio_uart_get_mctrl() argument
203 status = sdio_in(port, UART_MSR); in sdio_uart_get_mctrl()
217 static void sdio_uart_write_mctrl(struct sdio_uart_port *port, in sdio_uart_write_mctrl() argument
233 sdio_out(port, UART_MCR, mcr); in sdio_uart_write_mctrl()
236 static inline void sdio_uart_update_mctrl(struct sdio_uart_port *port, in sdio_uart_update_mctrl() argument
241 old = port->mctrl; in sdio_uart_update_mctrl()
242 port->mctrl = (old & ~clear) | set; in sdio_uart_update_mctrl()
243 if (old != port->mctrl) in sdio_uart_update_mctrl()
244 sdio_uart_write_mctrl(port, port->mctrl); in sdio_uart_update_mctrl()
247 #define sdio_uart_set_mctrl(port, x) sdio_uart_update_mctrl(port, x, 0) argument
248 #define sdio_uart_clear_mctrl(port, x) sdio_uart_update_mctrl(port, 0, x) argument
250 static void sdio_uart_change_speed(struct sdio_uart_port *port, in sdio_uart_change_speed() argument
284 if (baud <= port->uartclk) in sdio_uart_change_speed()
297 quot = (2 * port->uartclk + baud) / (2 * baud); in sdio_uart_change_speed()
304 port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in sdio_uart_change_speed()
306 port->read_status_mask |= UART_LSR_FE | UART_LSR_PE; in sdio_uart_change_speed()
308 port->read_status_mask |= UART_LSR_BI; in sdio_uart_change_speed()
313 port->ignore_status_mask = 0; in sdio_uart_change_speed()
315 port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in sdio_uart_change_speed()
317 port->ignore_status_mask |= UART_LSR_BI; in sdio_uart_change_speed()
323 port->ignore_status_mask |= UART_LSR_OE; in sdio_uart_change_speed()
330 port->ignore_status_mask |= UART_LSR_DR; in sdio_uart_change_speed()
335 port->ier &= ~UART_IER_MSI; in sdio_uart_change_speed()
337 port->ier |= UART_IER_MSI; in sdio_uart_change_speed()
339 port->lcr = cval; in sdio_uart_change_speed()
341 sdio_out(port, UART_IER, port->ier); in sdio_uart_change_speed()
342 sdio_out(port, UART_LCR, cval | UART_LCR_DLAB); in sdio_uart_change_speed()
343 sdio_out(port, UART_DLL, quot & 0xff); in sdio_uart_change_speed()
344 sdio_out(port, UART_DLM, quot >> 8); in sdio_uart_change_speed()
345 sdio_out(port, UART_LCR, cval); in sdio_uart_change_speed()
346 sdio_out(port, UART_FCR, fcr); in sdio_uart_change_speed()
348 sdio_uart_write_mctrl(port, port->mctrl); in sdio_uart_change_speed()
351 static void sdio_uart_start_tx(struct sdio_uart_port *port) in sdio_uart_start_tx() argument
353 if (!(port->ier & UART_IER_THRI)) { in sdio_uart_start_tx()
354 port->ier |= UART_IER_THRI; in sdio_uart_start_tx()
355 sdio_out(port, UART_IER, port->ier); in sdio_uart_start_tx()
359 static void sdio_uart_stop_tx(struct sdio_uart_port *port) in sdio_uart_stop_tx() argument
361 if (port->ier & UART_IER_THRI) { in sdio_uart_stop_tx()
362 port->ier &= ~UART_IER_THRI; in sdio_uart_stop_tx()
363 sdio_out(port, UART_IER, port->ier); in sdio_uart_stop_tx()
367 static void sdio_uart_stop_rx(struct sdio_uart_port *port) in sdio_uart_stop_rx() argument
369 port->ier &= ~UART_IER_RLSI; in sdio_uart_stop_rx()
370 port->read_status_mask &= ~UART_LSR_DR; in sdio_uart_stop_rx()
371 sdio_out(port, UART_IER, port->ier); in sdio_uart_stop_rx()
374 static void sdio_uart_receive_chars(struct sdio_uart_port *port, in sdio_uart_receive_chars() argument
381 ch = sdio_in(port, UART_RX); in sdio_uart_receive_chars()
383 port->icount.rx++; in sdio_uart_receive_chars()
392 port->icount.brk++; in sdio_uart_receive_chars()
394 port->icount.parity++; in sdio_uart_receive_chars()
396 port->icount.frame++; in sdio_uart_receive_chars()
398 port->icount.overrun++; in sdio_uart_receive_chars()
403 *status &= port->read_status_mask; in sdio_uart_receive_chars()
412 if ((*status & port->ignore_status_mask & ~UART_LSR_OE) == 0) in sdio_uart_receive_chars()
413 tty_insert_flip_char(&port->port, ch, flag); in sdio_uart_receive_chars()
419 if (*status & ~port->ignore_status_mask & UART_LSR_OE) in sdio_uart_receive_chars()
420 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); in sdio_uart_receive_chars()
422 *status = sdio_in(port, UART_LSR); in sdio_uart_receive_chars()
425 tty_flip_buffer_push(&port->port); in sdio_uart_receive_chars()
428 static void sdio_uart_transmit_chars(struct sdio_uart_port *port) in sdio_uart_transmit_chars() argument
430 struct kfifo *xmit = &port->xmit_fifo; in sdio_uart_transmit_chars()
436 if (port->x_char) { in sdio_uart_transmit_chars()
437 sdio_out(port, UART_TX, port->x_char); in sdio_uart_transmit_chars()
438 port->icount.tx++; in sdio_uart_transmit_chars()
439 port->x_char = 0; in sdio_uart_transmit_chars()
443 tty = tty_port_tty_get(&port->port); in sdio_uart_transmit_chars()
447 sdio_uart_stop_tx(port); in sdio_uart_transmit_chars()
452 len = kfifo_out_locked(xmit, iobuf, 16, &port->write_lock); in sdio_uart_transmit_chars()
454 sdio_out(port, UART_TX, iobuf[count]); in sdio_uart_transmit_chars()
455 port->icount.tx++; in sdio_uart_transmit_chars()
462 sdio_uart_stop_tx(port); in sdio_uart_transmit_chars()
467 static void sdio_uart_check_modem_status(struct sdio_uart_port *port) in sdio_uart_check_modem_status() argument
472 status = sdio_in(port, UART_MSR); in sdio_uart_check_modem_status()
478 port->icount.rng++; in sdio_uart_check_modem_status()
480 port->icount.dsr++; in sdio_uart_check_modem_status()
482 port->icount.dcd++; in sdio_uart_check_modem_status()
485 wake_up_interruptible(&port->port.open_wait); in sdio_uart_check_modem_status()
488 tty_port_tty_hangup(&port->port, false); in sdio_uart_check_modem_status()
492 port->icount.cts++; in sdio_uart_check_modem_status()
493 tty = tty_port_tty_get(&port->port); in sdio_uart_check_modem_status()
499 sdio_uart_start_tx(port); in sdio_uart_check_modem_status()
505 sdio_uart_stop_tx(port); in sdio_uart_check_modem_status()
518 struct sdio_uart_port *port = sdio_get_drvdata(func); in sdio_uart_irq() local
529 if (unlikely(port->in_sdio_uart_irq == current)) in sdio_uart_irq()
532 iir = sdio_in(port, UART_IIR); in sdio_uart_irq()
536 port->in_sdio_uart_irq = current; in sdio_uart_irq()
537 lsr = sdio_in(port, UART_LSR); in sdio_uart_irq()
539 sdio_uart_receive_chars(port, &lsr); in sdio_uart_irq()
540 sdio_uart_check_modem_status(port); in sdio_uart_irq()
542 sdio_uart_transmit_chars(port); in sdio_uart_irq()
543 port->in_sdio_uart_irq = NULL; in sdio_uart_irq()
548 struct sdio_uart_port *port = in uart_carrier_raised() local
549 container_of(tport, struct sdio_uart_port, port); in uart_carrier_raised()
550 unsigned int ret = sdio_uart_claim_func(port); in uart_carrier_raised()
553 ret = sdio_uart_get_mctrl(port); in uart_carrier_raised()
554 sdio_uart_release_func(port); in uart_carrier_raised()
571 struct sdio_uart_port *port = in uart_dtr_rts() local
572 container_of(tport, struct sdio_uart_port, port); in uart_dtr_rts()
573 int ret = sdio_uart_claim_func(port); in uart_dtr_rts()
577 sdio_uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); in uart_dtr_rts()
579 sdio_uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS); in uart_dtr_rts()
580 sdio_uart_release_func(port); in uart_dtr_rts()
600 struct sdio_uart_port *port = in sdio_uart_activate() local
601 container_of(tport, struct sdio_uart_port, port); in sdio_uart_activate()
610 kfifo_reset(&port->xmit_fifo); in sdio_uart_activate()
612 ret = sdio_uart_claim_func(port); in sdio_uart_activate()
615 ret = sdio_enable_func(port->func); in sdio_uart_activate()
618 ret = sdio_claim_irq(port->func, sdio_uart_irq); in sdio_uart_activate()
626 sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO); in sdio_uart_activate()
627 sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO | in sdio_uart_activate()
629 sdio_out(port, UART_FCR, 0); in sdio_uart_activate()
634 (void) sdio_in(port, UART_LSR); in sdio_uart_activate()
635 (void) sdio_in(port, UART_RX); in sdio_uart_activate()
636 (void) sdio_in(port, UART_IIR); in sdio_uart_activate()
637 (void) sdio_in(port, UART_MSR); in sdio_uart_activate()
642 sdio_out(port, UART_LCR, UART_LCR_WLEN8); in sdio_uart_activate()
644 port->ier = UART_IER_RLSI|UART_IER_RDI|UART_IER_RTOIE|UART_IER_UUE; in sdio_uart_activate()
645 port->mctrl = TIOCM_OUT2; in sdio_uart_activate()
647 sdio_uart_change_speed(port, &tty->termios, NULL); in sdio_uart_activate()
650 sdio_uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR); in sdio_uart_activate()
653 if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS)) in sdio_uart_activate()
659 sdio_uart_irq(port->func); in sdio_uart_activate()
661 sdio_uart_release_func(port); in sdio_uart_activate()
665 sdio_disable_func(port->func); in sdio_uart_activate()
667 sdio_uart_release_func(port); in sdio_uart_activate()
683 struct sdio_uart_port *port = in sdio_uart_shutdown() local
684 container_of(tport, struct sdio_uart_port, port); in sdio_uart_shutdown()
687 ret = sdio_uart_claim_func(port); in sdio_uart_shutdown()
691 sdio_uart_stop_rx(port); in sdio_uart_shutdown()
694 sdio_release_irq(port->func); in sdio_uart_shutdown()
695 port->ier = 0; in sdio_uart_shutdown()
696 sdio_out(port, UART_IER, 0); in sdio_uart_shutdown()
698 sdio_uart_clear_mctrl(port, TIOCM_OUT2); in sdio_uart_shutdown()
701 port->lcr &= ~UART_LCR_SBC; in sdio_uart_shutdown()
702 sdio_out(port, UART_LCR, port->lcr); in sdio_uart_shutdown()
703 sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO | in sdio_uart_shutdown()
706 sdio_out(port, UART_FCR, 0); in sdio_uart_shutdown()
708 sdio_disable_func(port->func); in sdio_uart_shutdown()
710 sdio_uart_release_func(port); in sdio_uart_shutdown()
715 struct sdio_uart_port *port = in sdio_uart_port_destroy() local
716 container_of(tport, struct sdio_uart_port, port); in sdio_uart_port_destroy()
717 kfifo_free(&port->xmit_fifo); in sdio_uart_port_destroy()
718 kfree(port); in sdio_uart_port_destroy()
733 struct sdio_uart_port *port = sdio_uart_port_get(idx); in sdio_uart_install() local
738 tty->driver_data = port; in sdio_uart_install()
740 sdio_uart_port_put(port); in sdio_uart_install()
754 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_cleanup() local
756 sdio_uart_port_put(port); in sdio_uart_cleanup()
765 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_open() local
766 return tty_port_open(&port->port, tty, filp); in sdio_uart_open()
771 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_close() local
772 tty_port_close(&port->port, tty, filp); in sdio_uart_close()
777 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_hangup() local
778 tty_port_hangup(&port->port); in sdio_uart_hangup()
784 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_write() local
787 if (!port->func) in sdio_uart_write()
790 ret = kfifo_in_locked(&port->xmit_fifo, buf, count, &port->write_lock); in sdio_uart_write()
791 if (!(port->ier & UART_IER_THRI)) { in sdio_uart_write()
792 int err = sdio_uart_claim_func(port); in sdio_uart_write()
794 sdio_uart_start_tx(port); in sdio_uart_write()
795 sdio_uart_irq(port->func); in sdio_uart_write()
796 sdio_uart_release_func(port); in sdio_uart_write()
806 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_write_room() local
807 return FIFO_SIZE - kfifo_len(&port->xmit_fifo); in sdio_uart_write_room()
812 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_chars_in_buffer() local
813 return kfifo_len(&port->xmit_fifo); in sdio_uart_chars_in_buffer()
818 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_send_xchar() local
820 port->x_char = ch; in sdio_uart_send_xchar()
821 if (ch && !(port->ier & UART_IER_THRI)) { in sdio_uart_send_xchar()
822 if (sdio_uart_claim_func(port) != 0) in sdio_uart_send_xchar()
824 sdio_uart_start_tx(port); in sdio_uart_send_xchar()
825 sdio_uart_irq(port->func); in sdio_uart_send_xchar()
826 sdio_uart_release_func(port); in sdio_uart_send_xchar()
832 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_throttle() local
837 if (sdio_uart_claim_func(port) != 0) in sdio_uart_throttle()
841 port->x_char = STOP_CHAR(tty); in sdio_uart_throttle()
842 sdio_uart_start_tx(port); in sdio_uart_throttle()
846 sdio_uart_clear_mctrl(port, TIOCM_RTS); in sdio_uart_throttle()
848 sdio_uart_irq(port->func); in sdio_uart_throttle()
849 sdio_uart_release_func(port); in sdio_uart_throttle()
854 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_unthrottle() local
859 if (sdio_uart_claim_func(port) != 0) in sdio_uart_unthrottle()
863 if (port->x_char) { in sdio_uart_unthrottle()
864 port->x_char = 0; in sdio_uart_unthrottle()
866 port->x_char = START_CHAR(tty); in sdio_uart_unthrottle()
867 sdio_uart_start_tx(port); in sdio_uart_unthrottle()
872 sdio_uart_set_mctrl(port, TIOCM_RTS); in sdio_uart_unthrottle()
874 sdio_uart_irq(port->func); in sdio_uart_unthrottle()
875 sdio_uart_release_func(port); in sdio_uart_unthrottle()
881 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_set_termios() local
884 if (sdio_uart_claim_func(port) != 0) in sdio_uart_set_termios()
887 sdio_uart_change_speed(port, &tty->termios, old_termios); in sdio_uart_set_termios()
891 sdio_uart_clear_mctrl(port, TIOCM_RTS | TIOCM_DTR); in sdio_uart_set_termios()
898 sdio_uart_set_mctrl(port, mask); in sdio_uart_set_termios()
904 sdio_uart_start_tx(port); in sdio_uart_set_termios()
909 if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS)) { in sdio_uart_set_termios()
911 sdio_uart_stop_tx(port); in sdio_uart_set_termios()
915 sdio_uart_release_func(port); in sdio_uart_set_termios()
920 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_break_ctl() local
923 result = sdio_uart_claim_func(port); in sdio_uart_break_ctl()
928 port->lcr |= UART_LCR_SBC; in sdio_uart_break_ctl()
930 port->lcr &= ~UART_LCR_SBC; in sdio_uart_break_ctl()
931 sdio_out(port, UART_LCR, port->lcr); in sdio_uart_break_ctl()
933 sdio_uart_release_func(port); in sdio_uart_break_ctl()
939 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_tiocmget() local
942 result = sdio_uart_claim_func(port); in sdio_uart_tiocmget()
944 result = port->mctrl | sdio_uart_get_mctrl(port); in sdio_uart_tiocmget()
945 sdio_uart_release_func(port); in sdio_uart_tiocmget()
954 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_tiocmset() local
957 result = sdio_uart_claim_func(port); in sdio_uart_tiocmset()
959 sdio_uart_update_mctrl(port, set, clear); in sdio_uart_tiocmset()
960 sdio_uart_release_func(port); in sdio_uart_tiocmset()
973 struct sdio_uart_port *port = sdio_uart_port_get(i); in sdio_uart_proc_show() local
974 if (port) { in sdio_uart_proc_show()
978 port->icount.tx, port->icount.rx); in sdio_uart_proc_show()
979 if (port->icount.frame) in sdio_uart_proc_show()
981 port->icount.frame); in sdio_uart_proc_show()
982 if (port->icount.parity) in sdio_uart_proc_show()
984 port->icount.parity); in sdio_uart_proc_show()
985 if (port->icount.brk) in sdio_uart_proc_show()
987 port->icount.brk); in sdio_uart_proc_show()
988 if (port->icount.overrun) in sdio_uart_proc_show()
990 port->icount.overrun); in sdio_uart_proc_show()
991 if (port->icount.cts) in sdio_uart_proc_show()
993 port->icount.cts); in sdio_uart_proc_show()
994 if (port->icount.dsr) in sdio_uart_proc_show()
996 port->icount.dsr); in sdio_uart_proc_show()
997 if (port->icount.rng) in sdio_uart_proc_show()
999 port->icount.rng); in sdio_uart_proc_show()
1000 if (port->icount.dcd) in sdio_uart_proc_show()
1002 port->icount.dcd); in sdio_uart_proc_show()
1004 sdio_uart_port_put(port); in sdio_uart_proc_show()
1043 struct sdio_uart_port *port; in sdio_uart_probe() local
1046 port = kzalloc(sizeof(struct sdio_uart_port), GFP_KERNEL); in sdio_uart_probe()
1047 if (!port) in sdio_uart_probe()
1053 kfree(port); in sdio_uart_probe()
1072 kfree(port); in sdio_uart_probe()
1077 port->regs_offset = (tpl->data[4] << 0) | in sdio_uart_probe()
1081 sdio_func_id(func), port->regs_offset); in sdio_uart_probe()
1082 port->uartclk = tpl->data[7] * 115200; in sdio_uart_probe()
1083 if (port->uartclk == 0) in sdio_uart_probe()
1084 port->uartclk = 115200; in sdio_uart_probe()
1086 sdio_func_id(func), port->uartclk, in sdio_uart_probe()
1089 kfree(port); in sdio_uart_probe()
1093 port->func = func; in sdio_uart_probe()
1094 sdio_set_drvdata(func, port); in sdio_uart_probe()
1095 tty_port_init(&port->port); in sdio_uart_probe()
1096 port->port.ops = &sdio_uart_port_ops; in sdio_uart_probe()
1098 ret = sdio_uart_add_port(port); in sdio_uart_probe()
1100 kfree(port); in sdio_uart_probe()
1103 dev = tty_port_register_device(&port->port, in sdio_uart_probe()
1104 sdio_uart_tty_driver, port->index, &func->dev); in sdio_uart_probe()
1106 sdio_uart_port_remove(port); in sdio_uart_probe()
1116 struct sdio_uart_port *port = sdio_get_drvdata(func); in sdio_uart_remove() local
1118 tty_unregister_device(sdio_uart_tty_driver, port->index); in sdio_uart_remove()
1119 sdio_uart_port_remove(port); in sdio_uart_remove()