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![Ralf Baechle](/assets/img/avatar_default.png)
Use physical addresses at the interface level, letting drivers remap them as appropriate. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
822 lines
19 KiB
C
822 lines
19 KiB
C
/*
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* dz.c: Serial port driver for DECStations equiped
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* with the DZ chipset.
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*
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* Copyright (C) 1998 Olivier A. D. Lebaillif
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*
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* Email: olivier.lebaillif@ifrsys.com
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*
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* [31-AUG-98] triemer
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* Changed IRQ to use Harald's dec internals interrupts.h
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* removed base_addr code - moving address assignment to setup.c
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* Changed name of dz_init to rs_init to be consistent with tc code
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* [13-NOV-98] triemer fixed code to receive characters
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* after patches by harald to irq code.
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* [09-JAN-99] triemer minor fix for schedule - due to removal of timeout
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* field from "current" - somewhere between 2.1.121 and 2.1.131
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Qua Jun 27 15:02:26 BRT 2001
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* [27-JUN-2001] Arnaldo Carvalho de Melo <acme@conectiva.com.br> - cleanups
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*
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* Parts (C) 1999 David Airlie, airlied@linux.ie
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* [07-SEP-99] Bugfixes
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*
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* [06-Jan-2002] Russell King <rmk@arm.linux.org.uk>
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* Converted to new serial core
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*/
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#undef DEBUG_DZ
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/serial_core.h>
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#include <linux/serial.h>
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#include <asm/bootinfo.h>
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#include <asm/dec/interrupts.h>
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#include <asm/dec/kn01.h>
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#include <asm/dec/kn02.h>
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#include <asm/dec/machtype.h>
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#include <asm/dec/prom.h>
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#include <asm/irq.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#define CONSOLE_LINE (3) /* for definition of struct console */
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#include "dz.h"
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#define DZ_INTR_DEBUG 1
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static char *dz_name = "DECstation DZ serial driver version ";
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static char *dz_version = "1.02";
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struct dz_port {
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struct uart_port port;
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unsigned int cflag;
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};
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static struct dz_port dz_ports[DZ_NB_PORT];
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#ifdef DEBUG_DZ
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/*
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* debugging code to send out chars via prom
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*/
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static void debug_console(const char *s, int count)
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{
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unsigned i;
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for (i = 0; i < count; i++) {
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if (*s == 10)
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prom_printf("%c", 13);
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prom_printf("%c", *s++);
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}
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}
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#endif
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/*
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* ------------------------------------------------------------
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* dz_in () and dz_out ()
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*
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* These routines are used to access the registers of the DZ
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* chip, hiding relocation differences between implementation.
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* ------------------------------------------------------------
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*/
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static inline unsigned short dz_in(struct dz_port *dport, unsigned offset)
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{
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volatile unsigned short *addr =
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(volatile unsigned short *) (dport->port.membase + offset);
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return *addr;
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}
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static inline void dz_out(struct dz_port *dport, unsigned offset,
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unsigned short value)
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{
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volatile unsigned short *addr =
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(volatile unsigned short *) (dport->port.membase + offset);
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*addr = value;
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}
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/*
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* ------------------------------------------------------------
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* rs_stop () and rs_start ()
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*
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* These routines are called before setting or resetting
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* tty->stopped. They enable or disable transmitter interrupts,
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* as necessary.
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* ------------------------------------------------------------
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*/
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static void dz_stop_tx(struct uart_port *uport)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned short tmp, mask = 1 << dport->port.line;
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unsigned long flags;
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spin_lock_irqsave(&dport->port.lock, flags);
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tmp = dz_in(dport, DZ_TCR); /* read the TX flag */
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tmp &= ~mask; /* clear the TX flag */
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dz_out(dport, DZ_TCR, tmp);
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spin_unlock_irqrestore(&dport->port.lock, flags);
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}
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static void dz_start_tx(struct uart_port *uport)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned short tmp, mask = 1 << dport->port.line;
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unsigned long flags;
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spin_lock_irqsave(&dport->port.lock, flags);
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tmp = dz_in(dport, DZ_TCR); /* read the TX flag */
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tmp |= mask; /* set the TX flag */
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dz_out(dport, DZ_TCR, tmp);
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spin_unlock_irqrestore(&dport->port.lock, flags);
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}
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static void dz_stop_rx(struct uart_port *uport)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned long flags;
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spin_lock_irqsave(&dport->port.lock, flags);
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dport->cflag &= ~DZ_CREAD;
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dz_out(dport, DZ_LPR, dport->cflag);
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spin_unlock_irqrestore(&dport->port.lock, flags);
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}
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static void dz_enable_ms(struct uart_port *port)
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{
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/* nothing to do */
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}
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/*
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* ------------------------------------------------------------
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* Here starts the interrupt handling routines. All of the
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* following subroutines are declared as inline and are folded
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* into dz_interrupt. They were separated out for readability's
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* sake.
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*
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* Note: rs_interrupt() is a "fast" interrupt, which means that it
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* runs with interrupts turned off. People who may want to modify
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* rs_interrupt() should try to keep the interrupt handler as fast as
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* possible. After you are done making modifications, it is not a bad
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* idea to do:
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*
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* make drivers/serial/dz.s
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*
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* and look at the resulting assemble code in dz.s.
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*
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* ------------------------------------------------------------
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*/
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/*
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* ------------------------------------------------------------
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* receive_char ()
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*
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* This routine deals with inputs from any lines.
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* ------------------------------------------------------------
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*/
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static inline void dz_receive_chars(struct dz_port *dport)
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{
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struct tty_struct *tty = NULL;
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struct uart_icount *icount;
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int ignore = 0;
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unsigned short status, tmp;
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unsigned char ch, flag;
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/* this code is going to be a problem...
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the call to tty_flip_buffer is going to need
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to be rethought...
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*/
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do {
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status = dz_in(dport, DZ_RBUF);
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/* punt so we don't get duplicate characters */
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if (!(status & DZ_DVAL))
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goto ignore_char;
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ch = UCHAR(status); /* grab the char */
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flag = TTY_NORMAL;
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#if 0
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if (info->is_console) {
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if (ch == 0)
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return; /* it's a break ... */
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}
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#endif
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tty = dport->port.info->tty;/* now tty points to the proper dev */
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icount = &dport->port.icount;
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if (!tty)
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break;
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if (tty->flip.count >= TTY_FLIPBUF_SIZE)
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break;
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icount->rx++;
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/* keep track of the statistics */
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if (status & (DZ_OERR | DZ_FERR | DZ_PERR)) {
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if (status & DZ_PERR) /* parity error */
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icount->parity++;
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else if (status & DZ_FERR) /* frame error */
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icount->frame++;
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if (status & DZ_OERR) /* overrun error */
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icount->overrun++;
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/* check to see if we should ignore the character
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and mask off conditions that should be ignored
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*/
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if (status & dport->port.ignore_status_mask) {
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if (++ignore > 100)
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break;
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goto ignore_char;
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}
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/* mask off the error conditions we want to ignore */
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tmp = status & dport->port.read_status_mask;
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if (tmp & DZ_PERR) {
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flag = TTY_PARITY;
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#ifdef DEBUG_DZ
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debug_console("PERR\n", 5);
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#endif
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} else if (tmp & DZ_FERR) {
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flag = TTY_FRAME;
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#ifdef DEBUG_DZ
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debug_console("FERR\n", 5);
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#endif
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}
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if (tmp & DZ_OERR) {
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#ifdef DEBUG_DZ
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debug_console("OERR\n", 5);
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#endif
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tty_insert_flip_char(tty, ch, flag);
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ch = 0;
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flag = TTY_OVERRUN;
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}
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}
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tty_insert_flip_char(tty, ch, flag);
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ignore_char:
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} while (status & DZ_DVAL);
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if (tty)
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tty_flip_buffer_push(tty);
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}
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/*
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* ------------------------------------------------------------
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* transmit_char ()
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*
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* This routine deals with outputs to any lines.
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* ------------------------------------------------------------
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*/
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static inline void dz_transmit_chars(struct dz_port *dport)
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{
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struct circ_buf *xmit = &dport->port.info->xmit;
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unsigned char tmp;
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if (dport->port.x_char) { /* XON/XOFF chars */
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dz_out(dport, DZ_TDR, dport->port.x_char);
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dport->port.icount.tx++;
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dport->port.x_char = 0;
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return;
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}
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/* if nothing to do or stopped or hardware stopped */
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if (uart_circ_empty(xmit) || uart_tx_stopped(&dport->port)) {
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dz_stop_tx(&dport->port);
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return;
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}
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/*
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* if something to do ... (rember the dz has no output fifo so we go
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* one char at a time :-<
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*/
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tmp = xmit->buf[xmit->tail];
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xmit->tail = (xmit->tail + 1) & (DZ_XMIT_SIZE - 1);
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dz_out(dport, DZ_TDR, tmp);
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dport->port.icount.tx++;
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if (uart_circ_chars_pending(xmit) < DZ_WAKEUP_CHARS)
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uart_write_wakeup(&dport->port);
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/* Are we done */
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if (uart_circ_empty(xmit))
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dz_stop_tx(&dport->port);
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}
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/*
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* ------------------------------------------------------------
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* check_modem_status ()
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*
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* Only valid for the MODEM line duh !
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* ------------------------------------------------------------
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*/
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static inline void check_modem_status(struct dz_port *dport)
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{
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unsigned short status;
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/* if not ne modem line just return */
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if (dport->port.line != DZ_MODEM)
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return;
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status = dz_in(dport, DZ_MSR);
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/* it's easy, since DSR2 is the only bit in the register */
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if (status)
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dport->port.icount.dsr++;
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}
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/*
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* ------------------------------------------------------------
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* dz_interrupt ()
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*
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* this is the main interrupt routine for the DZ chip.
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* It deals with the multiple ports.
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* ------------------------------------------------------------
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*/
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static irqreturn_t dz_interrupt(int irq, void *dev, struct pt_regs *regs)
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{
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struct dz_port *dport;
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unsigned short status;
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/* get the reason why we just got an irq */
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status = dz_in((struct dz_port *)dev, DZ_CSR);
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dport = &dz_ports[LINE(status)];
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if (status & DZ_RDONE)
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dz_receive_chars(dport);
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if (status & DZ_TRDY)
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dz_transmit_chars(dport);
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/* FIXME: what about check modem status??? --rmk */
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return IRQ_HANDLED;
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}
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/*
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* -------------------------------------------------------------------
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* Here ends the DZ interrupt routines.
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* -------------------------------------------------------------------
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*/
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static unsigned int dz_get_mctrl(struct uart_port *uport)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned int mctrl = TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
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if (dport->port.line == DZ_MODEM) {
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/*
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* CHECKME: This is a guess from the other code... --rmk
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*/
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if (dz_in(dport, DZ_MSR) & DZ_MODEM_DSR)
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mctrl &= ~TIOCM_DSR;
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}
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return mctrl;
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}
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static void dz_set_mctrl(struct uart_port *uport, unsigned int mctrl)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned short tmp;
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if (dport->port.line == DZ_MODEM) {
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tmp = dz_in(dport, DZ_TCR);
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if (mctrl & TIOCM_DTR)
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tmp &= ~DZ_MODEM_DTR;
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else
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tmp |= DZ_MODEM_DTR;
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dz_out(dport, DZ_TCR, tmp);
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}
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}
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/*
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* -------------------------------------------------------------------
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* startup ()
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*
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* various initialization tasks
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* -------------------------------------------------------------------
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*/
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static int dz_startup(struct uart_port *uport)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned long flags;
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unsigned short tmp;
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/* The dz lines for the mouse/keyboard must be
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* opened using their respective drivers.
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*/
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if ((dport->port.line == DZ_KEYBOARD) ||
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(dport->port.line == DZ_MOUSE))
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return -ENODEV;
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spin_lock_irqsave(&dport->port.lock, flags);
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/* enable the interrupt and the scanning */
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tmp = dz_in(dport, DZ_CSR);
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tmp |= DZ_RIE | DZ_TIE | DZ_MSE;
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dz_out(dport, DZ_CSR, tmp);
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spin_unlock_irqrestore(&dport->port.lock, flags);
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return 0;
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}
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/*
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* -------------------------------------------------------------------
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* shutdown ()
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*
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* This routine will shutdown a serial port; interrupts are disabled, and
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* DTR is dropped if the hangup on close termio flag is on.
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* -------------------------------------------------------------------
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*/
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static void dz_shutdown(struct uart_port *uport)
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{
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dz_stop_tx(uport);
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}
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/*
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* get_lsr_info - get line status register info
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*
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* Purpose: Let user call ioctl() to get info when the UART physically
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* is emptied. On bus types like RS485, the transmitter must
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* release the bus after transmitting. This must be done when
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* the transmit shift register is empty, not be done when the
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* transmit holding register is empty. This functionality
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* allows an RS485 driver to be written in user space.
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*/
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static unsigned int dz_tx_empty(struct uart_port *uport)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned short status = dz_in(dport, DZ_LPR);
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/* FIXME: this appears to be obviously broken --rmk. */
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return status ? TIOCSER_TEMT : 0;
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}
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static void dz_break_ctl(struct uart_port *uport, int break_state)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned long flags;
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unsigned short tmp, mask = 1 << uport->line;
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spin_lock_irqsave(&uport->lock, flags);
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tmp = dz_in(dport, DZ_TCR);
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if (break_state)
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tmp |= mask;
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else
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tmp &= ~mask;
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dz_out(dport, DZ_TCR, tmp);
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spin_unlock_irqrestore(&uport->lock, flags);
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}
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|
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static void dz_set_termios(struct uart_port *uport, struct termios *termios,
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struct termios *old_termios)
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{
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struct dz_port *dport = (struct dz_port *)uport;
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unsigned long flags;
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unsigned int cflag, baud;
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cflag = dport->port.line;
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|
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switch (termios->c_cflag & CSIZE) {
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case CS5:
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cflag |= DZ_CS5;
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break;
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case CS6:
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cflag |= DZ_CS6;
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break;
|
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case CS7:
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cflag |= DZ_CS7;
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break;
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case CS8:
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default:
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cflag |= DZ_CS8;
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}
|
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|
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if (termios->c_cflag & CSTOPB)
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cflag |= DZ_CSTOPB;
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if (termios->c_cflag & PARENB)
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cflag |= DZ_PARENB;
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if (termios->c_cflag & PARODD)
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cflag |= DZ_PARODD;
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baud = uart_get_baud_rate(uport, termios, old_termios, 50, 9600);
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switch (baud) {
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case 50:
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cflag |= DZ_B50;
|
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break;
|
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case 75:
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cflag |= DZ_B75;
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break;
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case 110:
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cflag |= DZ_B110;
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break;
|
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case 134:
|
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cflag |= DZ_B134;
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break;
|
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case 150:
|
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cflag |= DZ_B150;
|
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break;
|
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case 300:
|
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cflag |= DZ_B300;
|
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break;
|
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case 600:
|
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cflag |= DZ_B600;
|
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break;
|
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case 1200:
|
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cflag |= DZ_B1200;
|
|
break;
|
|
case 1800:
|
|
cflag |= DZ_B1800;
|
|
break;
|
|
case 2000:
|
|
cflag |= DZ_B2000;
|
|
break;
|
|
case 2400:
|
|
cflag |= DZ_B2400;
|
|
break;
|
|
case 3600:
|
|
cflag |= DZ_B3600;
|
|
break;
|
|
case 4800:
|
|
cflag |= DZ_B4800;
|
|
break;
|
|
case 7200:
|
|
cflag |= DZ_B7200;
|
|
break;
|
|
case 9600:
|
|
default:
|
|
cflag |= DZ_B9600;
|
|
}
|
|
|
|
if (termios->c_cflag & CREAD)
|
|
cflag |= DZ_RXENAB;
|
|
|
|
spin_lock_irqsave(&dport->port.lock, flags);
|
|
|
|
dz_out(dport, DZ_LPR, cflag);
|
|
dport->cflag = cflag;
|
|
|
|
/* setup accept flag */
|
|
dport->port.read_status_mask = DZ_OERR;
|
|
if (termios->c_iflag & INPCK)
|
|
dport->port.read_status_mask |= DZ_FERR | DZ_PERR;
|
|
|
|
/* characters to ignore */
|
|
uport->ignore_status_mask = 0;
|
|
if (termios->c_iflag & IGNPAR)
|
|
dport->port.ignore_status_mask |= DZ_FERR | DZ_PERR;
|
|
|
|
spin_unlock_irqrestore(&dport->port.lock, flags);
|
|
}
|
|
|
|
static const char *dz_type(struct uart_port *port)
|
|
{
|
|
return "DZ";
|
|
}
|
|
|
|
static void dz_release_port(struct uart_port *port)
|
|
{
|
|
/* nothing to do */
|
|
}
|
|
|
|
static int dz_request_port(struct uart_port *port)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void dz_config_port(struct uart_port *port, int flags)
|
|
{
|
|
if (flags & UART_CONFIG_TYPE)
|
|
port->type = PORT_DZ;
|
|
}
|
|
|
|
/*
|
|
* verify the new serial_struct (for TIOCSSERIAL).
|
|
*/
|
|
static int dz_verify_port(struct uart_port *port, struct serial_struct *ser)
|
|
{
|
|
int ret = 0;
|
|
if (ser->type != PORT_UNKNOWN && ser->type != PORT_DZ)
|
|
ret = -EINVAL;
|
|
if (ser->irq != port->irq)
|
|
ret = -EINVAL;
|
|
return ret;
|
|
}
|
|
|
|
static struct uart_ops dz_ops = {
|
|
.tx_empty = dz_tx_empty,
|
|
.get_mctrl = dz_get_mctrl,
|
|
.set_mctrl = dz_set_mctrl,
|
|
.stop_tx = dz_stop_tx,
|
|
.start_tx = dz_start_tx,
|
|
.stop_rx = dz_stop_rx,
|
|
.enable_ms = dz_enable_ms,
|
|
.break_ctl = dz_break_ctl,
|
|
.startup = dz_startup,
|
|
.shutdown = dz_shutdown,
|
|
.set_termios = dz_set_termios,
|
|
.type = dz_type,
|
|
.release_port = dz_release_port,
|
|
.request_port = dz_request_port,
|
|
.config_port = dz_config_port,
|
|
.verify_port = dz_verify_port,
|
|
};
|
|
|
|
static void __init dz_init_ports(void)
|
|
{
|
|
static int first = 1;
|
|
struct dz_port *dport;
|
|
unsigned long base;
|
|
int i;
|
|
|
|
if (!first)
|
|
return;
|
|
first = 0;
|
|
|
|
if (mips_machtype == MACH_DS23100 ||
|
|
mips_machtype == MACH_DS5100)
|
|
base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_DZ11);
|
|
else
|
|
base = CKSEG1ADDR(KN02_SLOT_BASE + KN02_DZ11);
|
|
|
|
for (i = 0, dport = dz_ports; i < DZ_NB_PORT; i++, dport++) {
|
|
spin_lock_init(&dport->port.lock);
|
|
dport->port.membase = (char *) base;
|
|
dport->port.iotype = SERIAL_IO_PORT;
|
|
dport->port.irq = dec_interrupt[DEC_IRQ_DZ11];
|
|
dport->port.line = i;
|
|
dport->port.fifosize = 1;
|
|
dport->port.ops = &dz_ops;
|
|
dport->port.flags = UPF_BOOT_AUTOCONF;
|
|
}
|
|
}
|
|
|
|
static void dz_reset(struct dz_port *dport)
|
|
{
|
|
dz_out(dport, DZ_CSR, DZ_CLR);
|
|
|
|
while (dz_in(dport, DZ_CSR) & DZ_CLR);
|
|
/* FIXME: cpu_relax? */
|
|
|
|
iob();
|
|
|
|
/* enable scanning */
|
|
dz_out(dport, DZ_CSR, DZ_MSE);
|
|
}
|
|
|
|
#ifdef CONFIG_SERIAL_DZ_CONSOLE
|
|
static void dz_console_put_char(struct dz_port *dport, unsigned char ch)
|
|
{
|
|
unsigned long flags;
|
|
int loops = 2500;
|
|
unsigned short tmp = ch;
|
|
/* this code sends stuff out to serial device - spinning its
|
|
wheels and waiting. */
|
|
|
|
spin_lock_irqsave(&dport->port.lock, flags);
|
|
|
|
/* spin our wheels */
|
|
while (((dz_in(dport, DZ_CSR) & DZ_TRDY) != DZ_TRDY) && loops--)
|
|
/* FIXME: cpu_relax, udelay? --rmk */
|
|
;
|
|
|
|
/* Actually transmit the character. */
|
|
dz_out(dport, DZ_TDR, tmp);
|
|
|
|
spin_unlock_irqrestore(&dport->port.lock, flags);
|
|
}
|
|
/*
|
|
* -------------------------------------------------------------------
|
|
* dz_console_print ()
|
|
*
|
|
* dz_console_print is registered for printk.
|
|
* The console must be locked when we get here.
|
|
* -------------------------------------------------------------------
|
|
*/
|
|
static void dz_console_print(struct console *cons,
|
|
const char *str,
|
|
unsigned int count)
|
|
{
|
|
struct dz_port *dport = &dz_ports[CONSOLE_LINE];
|
|
#ifdef DEBUG_DZ
|
|
prom_printf((char *) str);
|
|
#endif
|
|
while (count--) {
|
|
if (*str == '\n')
|
|
dz_console_put_char(dport, '\r');
|
|
dz_console_put_char(dport, *str++);
|
|
}
|
|
}
|
|
|
|
static int __init dz_console_setup(struct console *co, char *options)
|
|
{
|
|
struct dz_port *dport = &dz_ports[CONSOLE_LINE];
|
|
int baud = 9600;
|
|
int bits = 8;
|
|
int parity = 'n';
|
|
int flow = 'n';
|
|
int ret;
|
|
unsigned short mask, tmp;
|
|
|
|
if (options)
|
|
uart_parse_options(options, &baud, &parity, &bits, &flow);
|
|
|
|
dz_reset(dport);
|
|
|
|
ret = uart_set_options(&dport->port, co, baud, parity, bits, flow);
|
|
if (ret == 0) {
|
|
mask = 1 << dport->port.line;
|
|
tmp = dz_in(dport, DZ_TCR); /* read the TX flag */
|
|
if (!(tmp & mask)) {
|
|
tmp |= mask; /* set the TX flag */
|
|
dz_out(dport, DZ_TCR, tmp);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct console dz_sercons =
|
|
{
|
|
.name = "ttyS",
|
|
.write = dz_console_print,
|
|
.device = uart_console_device,
|
|
.setup = dz_console_setup,
|
|
.flags = CON_CONSDEV | CON_PRINTBUFFER,
|
|
.index = CONSOLE_LINE,
|
|
};
|
|
|
|
void __init dz_serial_console_init(void)
|
|
{
|
|
dz_init_ports();
|
|
|
|
register_console(&dz_sercons);
|
|
}
|
|
|
|
#define SERIAL_DZ_CONSOLE &dz_sercons
|
|
#else
|
|
#define SERIAL_DZ_CONSOLE NULL
|
|
#endif /* CONFIG_SERIAL_DZ_CONSOLE */
|
|
|
|
static struct uart_driver dz_reg = {
|
|
.owner = THIS_MODULE,
|
|
.driver_name = "serial",
|
|
#ifdef CONFIG_DEVFS
|
|
.dev_name = "tts/%d",
|
|
#else
|
|
.dev_name = "ttyS%d",
|
|
#endif
|
|
.major = TTY_MAJOR,
|
|
.minor = 64,
|
|
.nr = DZ_NB_PORT,
|
|
.cons = SERIAL_DZ_CONSOLE,
|
|
};
|
|
|
|
int __init dz_init(void)
|
|
{
|
|
unsigned long flags;
|
|
int ret, i;
|
|
|
|
printk("%s%s\n", dz_name, dz_version);
|
|
|
|
dz_init_ports();
|
|
|
|
save_flags(flags);
|
|
cli();
|
|
|
|
#ifndef CONFIG_SERIAL_DZ_CONSOLE
|
|
/* reset the chip */
|
|
dz_reset(&dz_ports[0]);
|
|
#endif
|
|
|
|
/* order matters here... the trick is that flags
|
|
is updated... in request_irq - to immediatedly obliterate
|
|
it is unwise. */
|
|
restore_flags(flags);
|
|
|
|
if (request_irq(dz_ports[0].port.irq, dz_interrupt,
|
|
SA_INTERRUPT, "DZ", &dz_ports[0]))
|
|
panic("Unable to register DZ interrupt");
|
|
|
|
ret = uart_register_driver(&dz_reg);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
for (i = 0; i < DZ_NB_PORT; i++)
|
|
uart_add_one_port(&dz_reg, &dz_ports[i].port);
|
|
|
|
return ret;
|
|
}
|
|
|
|
MODULE_DESCRIPTION("DECstation DZ serial driver");
|
|
MODULE_LICENSE("GPL");
|