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
138 BUG_ON(sdio_uart_table[port->index] != port); in sdio_uart_port_remove()
141 sdio_uart_table[port->index] = NULL; in sdio_uart_port_remove()
151 mutex_lock(&port->port.mutex); in sdio_uart_port_remove()
152 mutex_lock(&port->func_lock); in sdio_uart_port_remove()
153 func = port->func; in sdio_uart_port_remove()
155 port->func = NULL; in sdio_uart_port_remove()
156 mutex_unlock(&port->func_lock); in sdio_uart_port_remove()
158 tty_port_tty_hangup(&port->port, false); in sdio_uart_port_remove()
159 mutex_unlock(&port->port.mutex); in sdio_uart_port_remove()
164 sdio_uart_port_put(port); in sdio_uart_port_remove()
167 static int sdio_uart_claim_func(struct sdio_uart_port *port) in sdio_uart_claim_func() argument
169 mutex_lock(&port->func_lock); in sdio_uart_claim_func()
170 if (unlikely(!port->func)) { in sdio_uart_claim_func()
171 mutex_unlock(&port->func_lock); in sdio_uart_claim_func()
174 if (likely(port->in_sdio_uart_irq != current)) in sdio_uart_claim_func()
175 sdio_claim_host(port->func); in sdio_uart_claim_func()
176 mutex_unlock(&port->func_lock); in sdio_uart_claim_func()
180 static inline void sdio_uart_release_func(struct sdio_uart_port *port) in sdio_uart_release_func() argument
182 if (likely(port->in_sdio_uart_irq != current)) in sdio_uart_release_func()
183 sdio_release_host(port->func); in sdio_uart_release_func()
186 static inline unsigned int sdio_in(struct sdio_uart_port *port, int offset) in sdio_in() argument
189 c = sdio_readb(port->func, port->regs_offset + offset, NULL); in sdio_in()
193 static inline void sdio_out(struct sdio_uart_port *port, int offset, int value) in sdio_out() argument
195 sdio_writeb(port->func, value, port->regs_offset + offset, NULL); in sdio_out()
198 static unsigned int sdio_uart_get_mctrl(struct sdio_uart_port *port) in sdio_uart_get_mctrl() argument
205 status = sdio_in(port, UART_MSR); in sdio_uart_get_mctrl()
219 static void sdio_uart_write_mctrl(struct sdio_uart_port *port, in sdio_uart_write_mctrl() argument
235 sdio_out(port, UART_MCR, mcr); in sdio_uart_write_mctrl()
238 static inline void sdio_uart_update_mctrl(struct sdio_uart_port *port, in sdio_uart_update_mctrl() argument
243 old = port->mctrl; in sdio_uart_update_mctrl()
244 port->mctrl = (old & ~clear) | set; in sdio_uart_update_mctrl()
245 if (old != port->mctrl) in sdio_uart_update_mctrl()
246 sdio_uart_write_mctrl(port, port->mctrl); in sdio_uart_update_mctrl()
249 #define sdio_uart_set_mctrl(port, x) sdio_uart_update_mctrl(port, x, 0) argument
250 #define sdio_uart_clear_mctrl(port, x) sdio_uart_update_mctrl(port, 0, x) argument
252 static void sdio_uart_change_speed(struct sdio_uart_port *port, in sdio_uart_change_speed() argument
286 if (baud <= port->uartclk) in sdio_uart_change_speed()
299 quot = (2 * port->uartclk + baud) / (2 * baud); in sdio_uart_change_speed()
306 port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in sdio_uart_change_speed()
308 port->read_status_mask |= UART_LSR_FE | UART_LSR_PE; in sdio_uart_change_speed()
310 port->read_status_mask |= UART_LSR_BI; in sdio_uart_change_speed()
315 port->ignore_status_mask = 0; in sdio_uart_change_speed()
317 port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in sdio_uart_change_speed()
319 port->ignore_status_mask |= UART_LSR_BI; in sdio_uart_change_speed()
325 port->ignore_status_mask |= UART_LSR_OE; in sdio_uart_change_speed()
332 port->ignore_status_mask |= UART_LSR_DR; in sdio_uart_change_speed()
337 port->ier &= ~UART_IER_MSI; in sdio_uart_change_speed()
339 port->ier |= UART_IER_MSI; in sdio_uart_change_speed()
341 port->lcr = cval; in sdio_uart_change_speed()
343 sdio_out(port, UART_IER, port->ier); in sdio_uart_change_speed()
344 sdio_out(port, UART_LCR, cval | UART_LCR_DLAB); in sdio_uart_change_speed()
345 sdio_out(port, UART_DLL, quot & 0xff); in sdio_uart_change_speed()
346 sdio_out(port, UART_DLM, quot >> 8); in sdio_uart_change_speed()
347 sdio_out(port, UART_LCR, cval); in sdio_uart_change_speed()
348 sdio_out(port, UART_FCR, fcr); in sdio_uart_change_speed()
350 sdio_uart_write_mctrl(port, port->mctrl); in sdio_uart_change_speed()
353 static void sdio_uart_start_tx(struct sdio_uart_port *port) in sdio_uart_start_tx() argument
355 if (!(port->ier & UART_IER_THRI)) { in sdio_uart_start_tx()
356 port->ier |= UART_IER_THRI; in sdio_uart_start_tx()
357 sdio_out(port, UART_IER, port->ier); in sdio_uart_start_tx()
361 static void sdio_uart_stop_tx(struct sdio_uart_port *port) in sdio_uart_stop_tx() argument
363 if (port->ier & UART_IER_THRI) { in sdio_uart_stop_tx()
364 port->ier &= ~UART_IER_THRI; in sdio_uart_stop_tx()
365 sdio_out(port, UART_IER, port->ier); in sdio_uart_stop_tx()
369 static void sdio_uart_stop_rx(struct sdio_uart_port *port) in sdio_uart_stop_rx() argument
371 port->ier &= ~UART_IER_RLSI; in sdio_uart_stop_rx()
372 port->read_status_mask &= ~UART_LSR_DR; in sdio_uart_stop_rx()
373 sdio_out(port, UART_IER, port->ier); in sdio_uart_stop_rx()
376 static void sdio_uart_receive_chars(struct sdio_uart_port *port, in sdio_uart_receive_chars() argument
383 ch = sdio_in(port, UART_RX); in sdio_uart_receive_chars()
385 port->icount.rx++; in sdio_uart_receive_chars()
394 port->icount.brk++; in sdio_uart_receive_chars()
396 port->icount.parity++; in sdio_uart_receive_chars()
398 port->icount.frame++; in sdio_uart_receive_chars()
400 port->icount.overrun++; in sdio_uart_receive_chars()
405 *status &= port->read_status_mask; in sdio_uart_receive_chars()
414 if ((*status & port->ignore_status_mask & ~UART_LSR_OE) == 0) in sdio_uart_receive_chars()
415 tty_insert_flip_char(&port->port, ch, flag); in sdio_uart_receive_chars()
421 if (*status & ~port->ignore_status_mask & UART_LSR_OE) in sdio_uart_receive_chars()
422 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); in sdio_uart_receive_chars()
424 *status = sdio_in(port, UART_LSR); in sdio_uart_receive_chars()
427 tty_flip_buffer_push(&port->port); in sdio_uart_receive_chars()
430 static void sdio_uart_transmit_chars(struct sdio_uart_port *port) in sdio_uart_transmit_chars() argument
432 struct kfifo *xmit = &port->xmit_fifo; in sdio_uart_transmit_chars()
438 if (port->x_char) { in sdio_uart_transmit_chars()
439 sdio_out(port, UART_TX, port->x_char); in sdio_uart_transmit_chars()
440 port->icount.tx++; in sdio_uart_transmit_chars()
441 port->x_char = 0; in sdio_uart_transmit_chars()
445 tty = tty_port_tty_get(&port->port); in sdio_uart_transmit_chars()
449 sdio_uart_stop_tx(port); in sdio_uart_transmit_chars()
454 len = kfifo_out_locked(xmit, iobuf, 16, &port->write_lock); in sdio_uart_transmit_chars()
456 sdio_out(port, UART_TX, iobuf[count]); in sdio_uart_transmit_chars()
457 port->icount.tx++; in sdio_uart_transmit_chars()
464 sdio_uart_stop_tx(port); in sdio_uart_transmit_chars()
469 static void sdio_uart_check_modem_status(struct sdio_uart_port *port) in sdio_uart_check_modem_status() argument
474 status = sdio_in(port, UART_MSR); in sdio_uart_check_modem_status()
480 port->icount.rng++; in sdio_uart_check_modem_status()
482 port->icount.dsr++; in sdio_uart_check_modem_status()
484 port->icount.dcd++; in sdio_uart_check_modem_status()
487 wake_up_interruptible(&port->port.open_wait); in sdio_uart_check_modem_status()
490 tty_port_tty_hangup(&port->port, false); in sdio_uart_check_modem_status()
494 port->icount.cts++; in sdio_uart_check_modem_status()
495 tty = tty_port_tty_get(&port->port); in sdio_uart_check_modem_status()
501 sdio_uart_start_tx(port); in sdio_uart_check_modem_status()
507 sdio_uart_stop_tx(port); in sdio_uart_check_modem_status()
520 struct sdio_uart_port *port = sdio_get_drvdata(func); in sdio_uart_irq() local
531 if (unlikely(port->in_sdio_uart_irq == current)) in sdio_uart_irq()
534 iir = sdio_in(port, UART_IIR); in sdio_uart_irq()
538 port->in_sdio_uart_irq = current; in sdio_uart_irq()
539 lsr = sdio_in(port, UART_LSR); in sdio_uart_irq()
541 sdio_uart_receive_chars(port, &lsr); in sdio_uart_irq()
542 sdio_uart_check_modem_status(port); in sdio_uart_irq()
544 sdio_uart_transmit_chars(port); in sdio_uart_irq()
545 port->in_sdio_uart_irq = NULL; in sdio_uart_irq()
550 struct sdio_uart_port *port = in uart_carrier_raised() local
551 container_of(tport, struct sdio_uart_port, port); in uart_carrier_raised()
552 unsigned int ret = sdio_uart_claim_func(port); in uart_carrier_raised()
555 ret = sdio_uart_get_mctrl(port); in uart_carrier_raised()
556 sdio_uart_release_func(port); in uart_carrier_raised()
573 struct sdio_uart_port *port = in uart_dtr_rts() local
574 container_of(tport, struct sdio_uart_port, port); in uart_dtr_rts()
575 int ret = sdio_uart_claim_func(port); in uart_dtr_rts()
579 sdio_uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); in uart_dtr_rts()
581 sdio_uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS); in uart_dtr_rts()
582 sdio_uart_release_func(port); in uart_dtr_rts()
602 struct sdio_uart_port *port = in sdio_uart_activate() local
603 container_of(tport, struct sdio_uart_port, port); in sdio_uart_activate()
612 kfifo_reset(&port->xmit_fifo); in sdio_uart_activate()
614 ret = sdio_uart_claim_func(port); in sdio_uart_activate()
617 ret = sdio_enable_func(port->func); in sdio_uart_activate()
620 ret = sdio_claim_irq(port->func, sdio_uart_irq); in sdio_uart_activate()
628 sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO); in sdio_uart_activate()
629 sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO | in sdio_uart_activate()
631 sdio_out(port, UART_FCR, 0); in sdio_uart_activate()
636 (void) sdio_in(port, UART_LSR); in sdio_uart_activate()
637 (void) sdio_in(port, UART_RX); in sdio_uart_activate()
638 (void) sdio_in(port, UART_IIR); in sdio_uart_activate()
639 (void) sdio_in(port, UART_MSR); in sdio_uart_activate()
644 sdio_out(port, UART_LCR, UART_LCR_WLEN8); in sdio_uart_activate()
646 port->ier = UART_IER_RLSI|UART_IER_RDI|UART_IER_RTOIE|UART_IER_UUE; in sdio_uart_activate()
647 port->mctrl = TIOCM_OUT2; in sdio_uart_activate()
649 sdio_uart_change_speed(port, &tty->termios, NULL); in sdio_uart_activate()
652 sdio_uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR); in sdio_uart_activate()
655 if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS)) in sdio_uart_activate()
661 sdio_uart_irq(port->func); in sdio_uart_activate()
663 sdio_uart_release_func(port); in sdio_uart_activate()
667 sdio_disable_func(port->func); in sdio_uart_activate()
669 sdio_uart_release_func(port); in sdio_uart_activate()
685 struct sdio_uart_port *port = in sdio_uart_shutdown() local
686 container_of(tport, struct sdio_uart_port, port); in sdio_uart_shutdown()
689 ret = sdio_uart_claim_func(port); in sdio_uart_shutdown()
693 sdio_uart_stop_rx(port); in sdio_uart_shutdown()
696 sdio_release_irq(port->func); in sdio_uart_shutdown()
697 port->ier = 0; in sdio_uart_shutdown()
698 sdio_out(port, UART_IER, 0); in sdio_uart_shutdown()
700 sdio_uart_clear_mctrl(port, TIOCM_OUT2); in sdio_uart_shutdown()
703 port->lcr &= ~UART_LCR_SBC; in sdio_uart_shutdown()
704 sdio_out(port, UART_LCR, port->lcr); in sdio_uart_shutdown()
705 sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO | in sdio_uart_shutdown()
708 sdio_out(port, UART_FCR, 0); in sdio_uart_shutdown()
710 sdio_disable_func(port->func); in sdio_uart_shutdown()
712 sdio_uart_release_func(port); in sdio_uart_shutdown()
717 struct sdio_uart_port *port = in sdio_uart_port_destroy() local
718 container_of(tport, struct sdio_uart_port, port); in sdio_uart_port_destroy()
719 kfifo_free(&port->xmit_fifo); in sdio_uart_port_destroy()
720 kfree(port); in sdio_uart_port_destroy()
735 struct sdio_uart_port *port = sdio_uart_port_get(idx); in sdio_uart_install() local
740 tty->driver_data = port; in sdio_uart_install()
742 sdio_uart_port_put(port); in sdio_uart_install()
756 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_cleanup() local
758 sdio_uart_port_put(port); in sdio_uart_cleanup()
767 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_open() local
768 return tty_port_open(&port->port, tty, filp); in sdio_uart_open()
773 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_close() local
774 tty_port_close(&port->port, tty, filp); in sdio_uart_close()
779 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_hangup() local
780 tty_port_hangup(&port->port); in sdio_uart_hangup()
786 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_write() local
789 if (!port->func) in sdio_uart_write()
792 ret = kfifo_in_locked(&port->xmit_fifo, buf, count, &port->write_lock); in sdio_uart_write()
793 if (!(port->ier & UART_IER_THRI)) { in sdio_uart_write()
794 int err = sdio_uart_claim_func(port); in sdio_uart_write()
796 sdio_uart_start_tx(port); in sdio_uart_write()
797 sdio_uart_irq(port->func); in sdio_uart_write()
798 sdio_uart_release_func(port); in sdio_uart_write()
808 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_write_room() local
809 return FIFO_SIZE - kfifo_len(&port->xmit_fifo); in sdio_uart_write_room()
814 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_chars_in_buffer() local
815 return kfifo_len(&port->xmit_fifo); in sdio_uart_chars_in_buffer()
820 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_send_xchar() local
822 port->x_char = ch; in sdio_uart_send_xchar()
823 if (ch && !(port->ier & UART_IER_THRI)) { in sdio_uart_send_xchar()
824 if (sdio_uart_claim_func(port) != 0) in sdio_uart_send_xchar()
826 sdio_uart_start_tx(port); in sdio_uart_send_xchar()
827 sdio_uart_irq(port->func); in sdio_uart_send_xchar()
828 sdio_uart_release_func(port); in sdio_uart_send_xchar()
834 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_throttle() local
839 if (sdio_uart_claim_func(port) != 0) in sdio_uart_throttle()
843 port->x_char = STOP_CHAR(tty); in sdio_uart_throttle()
844 sdio_uart_start_tx(port); in sdio_uart_throttle()
848 sdio_uart_clear_mctrl(port, TIOCM_RTS); in sdio_uart_throttle()
850 sdio_uart_irq(port->func); in sdio_uart_throttle()
851 sdio_uart_release_func(port); in sdio_uart_throttle()
856 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_unthrottle() local
861 if (sdio_uart_claim_func(port) != 0) in sdio_uart_unthrottle()
865 if (port->x_char) { in sdio_uart_unthrottle()
866 port->x_char = 0; in sdio_uart_unthrottle()
868 port->x_char = START_CHAR(tty); in sdio_uart_unthrottle()
869 sdio_uart_start_tx(port); in sdio_uart_unthrottle()
874 sdio_uart_set_mctrl(port, TIOCM_RTS); in sdio_uart_unthrottle()
876 sdio_uart_irq(port->func); in sdio_uart_unthrottle()
877 sdio_uart_release_func(port); in sdio_uart_unthrottle()
883 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_set_termios() local
886 if (sdio_uart_claim_func(port) != 0) in sdio_uart_set_termios()
889 sdio_uart_change_speed(port, &tty->termios, old_termios); in sdio_uart_set_termios()
893 sdio_uart_clear_mctrl(port, TIOCM_RTS | TIOCM_DTR); in sdio_uart_set_termios()
900 sdio_uart_set_mctrl(port, mask); in sdio_uart_set_termios()
906 sdio_uart_start_tx(port); in sdio_uart_set_termios()
911 if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS)) { in sdio_uart_set_termios()
913 sdio_uart_stop_tx(port); in sdio_uart_set_termios()
917 sdio_uart_release_func(port); in sdio_uart_set_termios()
922 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_break_ctl() local
925 result = sdio_uart_claim_func(port); in sdio_uart_break_ctl()
930 port->lcr |= UART_LCR_SBC; in sdio_uart_break_ctl()
932 port->lcr &= ~UART_LCR_SBC; in sdio_uart_break_ctl()
933 sdio_out(port, UART_LCR, port->lcr); in sdio_uart_break_ctl()
935 sdio_uart_release_func(port); in sdio_uart_break_ctl()
941 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_tiocmget() local
944 result = sdio_uart_claim_func(port); in sdio_uart_tiocmget()
946 result = port->mctrl | sdio_uart_get_mctrl(port); in sdio_uart_tiocmget()
947 sdio_uart_release_func(port); in sdio_uart_tiocmget()
956 struct sdio_uart_port *port = tty->driver_data; in sdio_uart_tiocmset() local
959 result = sdio_uart_claim_func(port); in sdio_uart_tiocmset()
961 sdio_uart_update_mctrl(port, set, clear); in sdio_uart_tiocmset()
962 sdio_uart_release_func(port); in sdio_uart_tiocmset()
975 struct sdio_uart_port *port = sdio_uart_port_get(i); in sdio_uart_proc_show() local
976 if (port) { in sdio_uart_proc_show()
980 port->icount.tx, port->icount.rx); in sdio_uart_proc_show()
981 if (port->icount.frame) in sdio_uart_proc_show()
983 port->icount.frame); in sdio_uart_proc_show()
984 if (port->icount.parity) in sdio_uart_proc_show()
986 port->icount.parity); in sdio_uart_proc_show()
987 if (port->icount.brk) in sdio_uart_proc_show()
989 port->icount.brk); in sdio_uart_proc_show()
990 if (port->icount.overrun) in sdio_uart_proc_show()
992 port->icount.overrun); in sdio_uart_proc_show()
993 if (port->icount.cts) in sdio_uart_proc_show()
995 port->icount.cts); in sdio_uart_proc_show()
996 if (port->icount.dsr) in sdio_uart_proc_show()
998 port->icount.dsr); in sdio_uart_proc_show()
999 if (port->icount.rng) in sdio_uart_proc_show()
1001 port->icount.rng); in sdio_uart_proc_show()
1002 if (port->icount.dcd) in sdio_uart_proc_show()
1004 port->icount.dcd); in sdio_uart_proc_show()
1006 sdio_uart_port_put(port); in sdio_uart_proc_show()
1058 struct sdio_uart_port *port; in sdio_uart_probe() local
1061 port = kzalloc(sizeof(struct sdio_uart_port), GFP_KERNEL); in sdio_uart_probe()
1062 if (!port) in sdio_uart_probe()
1068 kfree(port); in sdio_uart_probe()
1087 kfree(port); in sdio_uart_probe()
1092 port->regs_offset = (tpl->data[4] << 0) | in sdio_uart_probe()
1096 sdio_func_id(func), port->regs_offset); in sdio_uart_probe()
1097 port->uartclk = tpl->data[7] * 115200; in sdio_uart_probe()
1098 if (port->uartclk == 0) in sdio_uart_probe()
1099 port->uartclk = 115200; in sdio_uart_probe()
1101 sdio_func_id(func), port->uartclk, in sdio_uart_probe()
1104 kfree(port); in sdio_uart_probe()
1108 port->func = func; in sdio_uart_probe()
1109 sdio_set_drvdata(func, port); in sdio_uart_probe()
1110 tty_port_init(&port->port); in sdio_uart_probe()
1111 port->port.ops = &sdio_uart_port_ops; in sdio_uart_probe()
1113 ret = sdio_uart_add_port(port); in sdio_uart_probe()
1115 kfree(port); in sdio_uart_probe()
1118 dev = tty_port_register_device(&port->port, in sdio_uart_probe()
1119 sdio_uart_tty_driver, port->index, &func->dev); in sdio_uart_probe()
1121 sdio_uart_port_remove(port); in sdio_uart_probe()
1131 struct sdio_uart_port *port = sdio_get_drvdata(func); in sdio_uart_remove() local
1133 tty_unregister_device(sdio_uart_tty_driver, port->index); in sdio_uart_remove()
1134 sdio_uart_port_remove(port); in sdio_uart_remove()