102 #define to_zport(uport) container_of(uport, struct zs_port, port)  argument
307 static unsigned int zs_tx_empty(struct uart_port *uport)  in zs_tx_empty()  argument
309 	struct zs_port *zport = to_zport(uport);  in zs_tx_empty()
375 static unsigned int zs_get_mctrl(struct uart_port *uport)  in zs_get_mctrl()  argument
377 	struct zs_port *zport = to_zport(uport);  in zs_get_mctrl()
388 static void zs_set_mctrl(struct uart_port *uport, unsigned int mctrl)  in zs_set_mctrl()  argument
390 	struct zs_port *zport = to_zport(uport);  in zs_set_mctrl()
428 static void zs_stop_tx(struct uart_port *uport)  in zs_stop_tx()  argument
430 	struct zs_port *zport = to_zport(uport);  in zs_stop_tx()
440 static void zs_start_tx(struct uart_port *uport)  in zs_start_tx()  argument
442 	struct zs_port *zport = to_zport(uport);  in zs_start_tx()
454 static void zs_stop_rx(struct uart_port *uport)  in zs_stop_rx()  argument
456 	struct zs_port *zport = to_zport(uport);  in zs_stop_rx()
488 static void zs_enable_ms(struct uart_port *uport)  in zs_enable_ms()  argument
490 	struct zs_port *zport = to_zport(uport);  in zs_enable_ms()
518 static void zs_break_ctl(struct uart_port *uport, int break_state)  in zs_break_ctl()  argument
520 	struct zs_port *zport = to_zport(uport);  in zs_break_ctl()
542 	struct uart_port *uport = &zport->port;  in zs_receive_chars()  local
562 		icount = &uport->icount;  in zs_receive_chars()
591 			status &= uport->read_status_mask;  in zs_receive_chars()
600 		if (uart_handle_sysrq_char(uport, ch))  in zs_receive_chars()
603 		uart_insert_char(uport, status, Rx_OVR, ch, flag);  in zs_receive_chars()
606 	tty_flip_buffer_push(&uport->state->port);  in zs_receive_chars()
651 	struct uart_port *uport = &zport->port;  in zs_status_handle()  local
665 			if (uart_handle_break(uport))  in zs_status_handle()
679 			uart_handle_cts_change(uport,  in zs_status_handle()
682 			uart_handle_dcd_change(uport,  in zs_status_handle()
685 			uport->icount.dsr++;  in zs_status_handle()
687 			uport->icount.rng++;  in zs_status_handle()
690 			wake_up_interruptible(&uport->state->port.delta_msr_wait);  in zs_status_handle()
755 static int zs_startup(struct uart_port *uport)  in zs_startup()  argument
757 	struct zs_port *zport = to_zport(uport);  in zs_startup()
808 static void zs_shutdown(struct uart_port *uport)  in zs_shutdown()  argument
810 	struct zs_port *zport = to_zport(uport);  in zs_shutdown()
851 static void zs_set_termios(struct uart_port *uport, struct ktermios *termios,  in zs_set_termios()  argument
854 	struct zs_port *zport = to_zport(uport);  in zs_set_termios()
914 	baud = uart_get_baud_rate(uport, termios, old_termios, 0,  in zs_set_termios()
915 				  uport->uartclk / zport->clk_mode / 4);  in zs_set_termios()
917 	brg = ZS_BPS_TO_BRG(baud, uport->uartclk / zport->clk_mode);  in zs_set_termios()
921 	uart_update_timeout(uport, termios->c_cflag, baud);  in zs_set_termios()
923 	uport->read_status_mask = Rx_OVR;  in zs_set_termios()
925 		uport->read_status_mask |= FRM_ERR | PAR_ERR;  in zs_set_termios()
927 		uport->read_status_mask |= Rx_BRK;  in zs_set_termios()
929 	uport->ignore_status_mask = 0;  in zs_set_termios()
931 		uport->ignore_status_mask |= FRM_ERR | PAR_ERR;  in zs_set_termios()
933 		uport->ignore_status_mask |= Rx_BRK;  in zs_set_termios()
935 			uport->ignore_status_mask |= Rx_OVR;  in zs_set_termios()
966 static void zs_pm(struct uart_port *uport, unsigned int state,  in zs_pm()  argument
969 	struct zs_port *zport = to_zport(uport);  in zs_pm()
979 static const char *zs_type(struct uart_port *uport)  in zs_type()  argument
984 static void zs_release_port(struct uart_port *uport)  in zs_release_port()  argument
986 	iounmap(uport->membase);  in zs_release_port()
987 	uport->membase = 0;  in zs_release_port()
988 	release_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE);  in zs_release_port()
991 static int zs_map_port(struct uart_port *uport)  in zs_map_port()  argument
993 	if (!uport->membase)  in zs_map_port()
994 		uport->membase = ioremap_nocache(uport->mapbase,  in zs_map_port()
996 	if (!uport->membase) {  in zs_map_port()
1003 static int zs_request_port(struct uart_port *uport)  in zs_request_port()  argument
1007 	if (!request_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE, "scc")) {  in zs_request_port()
1011 	ret = zs_map_port(uport);  in zs_request_port()
1013 		release_mem_region(uport->mapbase, ZS_CHAN_IO_SIZE);  in zs_request_port()
1019 static void zs_config_port(struct uart_port *uport, int flags)  in zs_config_port()  argument
1021 	struct zs_port *zport = to_zport(uport);  in zs_config_port()
1024 		if (zs_request_port(uport))  in zs_config_port()
1027 		uport->type = PORT_ZS;  in zs_config_port()
1033 static int zs_verify_port(struct uart_port *uport, struct serial_struct *ser)  in zs_verify_port()  argument
1035 	struct zs_port *zport = to_zport(uport);  in zs_verify_port()
1040 	if (ser->irq != uport->irq)  in zs_verify_port()
1042 	if (ser->baud_base != uport->uartclk / zport->clk_mode / 4)  in zs_verify_port()
1103 			struct uart_port *uport = &zport->port;  in zs_probe_sccs()  local
1108 			uport->irq	= zs_parms.irq[chip];  in zs_probe_sccs()
1109 			uport->uartclk	= ZS_CLOCK;  in zs_probe_sccs()
1110 			uport->fifosize	= 1;  in zs_probe_sccs()
1111 			uport->iotype	= UPIO_MEM;  in zs_probe_sccs()
1112 			uport->flags	= UPF_BOOT_AUTOCONF;  in zs_probe_sccs()
1113 			uport->ops	= &zs_ops;  in zs_probe_sccs()
1114 			uport->line	= chip * ZS_NUM_CHAN + side;  in zs_probe_sccs()
1115 			uport->mapbase	= dec_kn_slot_base +  in zs_probe_sccs()
1129 static void zs_console_putchar(struct uart_port *uport, int ch)  in zs_console_putchar()  argument
1131 	struct zs_port *zport = to_zport(uport);  in zs_console_putchar()
1198 	struct uart_port *uport = &zport->port;  in zs_console_setup()  local
1205 	ret = zs_map_port(uport);  in zs_console_setup()
1210 	zs_pm(uport, 0, -1);  in zs_console_setup()
1214 	return uart_set_options(uport, co, baud, parity, bits, flow);  in zs_console_setup()
1279 		struct uart_port *uport = &zport->port;  in zs_init()  local
1282 			uart_add_one_port(&zs_reg, uport);  in zs_init()
1295 		struct uart_port *uport = &zport->port;  in zs_exit()  local
1298 			uart_remove_one_port(&zs_reg, uport);  in zs_exit()