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/* drivers/char/ser_a2232.c */
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/* $Id: ser_a2232.c,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */
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/* Linux serial driver for the Amiga A2232 board */
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/* This driver is MAINTAINED. Before applying any changes, please contact
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/* Copyright (c) 2000-2001 Enver Haase <ehaase@inf.fu-berlin.de>
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* alias The A2232 driver project <A2232@gmx.net>
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* All rights reserved.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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/***************************** Documentation ************************/
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* This driver is in EXPERIMENTAL state. That means I could not find
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* someone with five A2232 boards with 35 ports running at 19200 bps
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* at the same time and test the machine's behaviour.
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* However, I know that you can performance-tweak this driver (see
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* One thing to consider is the time this driver consumes during the
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* Amiga's vertical blank interrupt. Everything that is to be done
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* _IS DONE_ when entering the vertical blank interrupt handler of
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* However, it would be more sane to only do the job for only ONE card
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* instead of ALL cards at a time; or, more generally, to handle only
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* SOME ports instead of ALL ports at a time.
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* However, as long as no-one runs into problems I guess I shouldn't
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* change the driver as it runs fine for me :) .
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* Version history of this file:
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* 0.4 Resolved licensing issues.
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* 0.3 Inclusion in the Linux/m68k tree, small fixes.
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* 0.2 Added documentation, minor typo fixes.
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* 0.1 Initial release.
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* - Handle incoming BREAK events. I guess "Stevens: Advanced
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* Programming in the UNIX(R) Environment" is a good reference
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* on what is to be done.
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* - When installing as a module, don't simply 'printk' text, but
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* send it to the TTY used by the user.
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* - Jukka Marin (65EC02 code).
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* - The other NetBSD developers on whose A2232 driver I had a
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* pretty close look. However, I didn't copy any code so it
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* is okay to put my code under the GPL and include it into
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/***************************** End of Documentation *****************/
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/***************************** Defines ******************************/
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* Enables experimental 115200 (normal) 230400 (turbo) baud rate.
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* The A2232 specification states it can only operate at speeds up to
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* 19200 bits per second, and I was not able to send a file via
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* "sz"/"rz" and a null-modem cable from one A2232 port to another
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* at 115200 bits per second.
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* However, this might work for you.
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#undef A2232_SPEEDHACK
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* Default is not to use RTS/CTS so you could be talked to death.
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#define A2232_SUPPRESS_RTSCTS_WARNING
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/************************* End of Defines ***************************/
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/***************************** Includes *****************************/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/tty.h>
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#include <asm/setup.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <linux/zorro.h>
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#include <linux/mutex.h>
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#include <linux/delay.h>
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#include <linux/serial.h>
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#include <linux/generic_serial.h>
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#include <linux/tty_flip.h>
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#include "ser_a2232.h"
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#include "ser_a2232fw.h"
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/************************* End of Includes **************************/
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/***************************** Prototypes ***************************/
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/* The interrupt service routine */
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static irqreturn_t a2232_vbl_inter(int irq, void *data);
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/* Initialize the port structures */
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static void a2232_init_portstructs(void);
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/* Initialize and register TTY drivers. */
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/* returns 0 IFF successful */
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static int a2232_init_drivers(void);
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/* BEGIN GENERIC_SERIAL PROTOTYPES */
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static void a2232_disable_tx_interrupts(void *ptr);
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static void a2232_enable_tx_interrupts(void *ptr);
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static void a2232_disable_rx_interrupts(void *ptr);
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static void a2232_enable_rx_interrupts(void *ptr);
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static int a2232_carrier_raised(struct tty_port *port);
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static void a2232_shutdown_port(void *ptr);
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static int a2232_set_real_termios(void *ptr);
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static int a2232_chars_in_buffer(void *ptr);
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static void a2232_close(void *ptr);
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static void a2232_hungup(void *ptr);
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/* static void a2232_getserial (void *ptr, struct serial_struct *sp); */
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/* END GENERIC_SERIAL PROTOTYPES */
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/* Functions that the TTY driver struct expects */
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static int a2232_ioctl(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg);
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static void a2232_throttle(struct tty_struct *tty);
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static void a2232_unthrottle(struct tty_struct *tty);
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static int a2232_open(struct tty_struct * tty, struct file * filp);
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/************************* End of Prototypes ************************/
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/***************************** Global variables *********************/
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/*---------------------------------------------------------------------------
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* Interface from generic_serial.c back here
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*--------------------------------------------------------------------------*/
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static struct real_driver a2232_real_driver = {
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a2232_disable_tx_interrupts,
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a2232_enable_tx_interrupts,
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a2232_disable_rx_interrupts,
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a2232_enable_rx_interrupts,
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a2232_set_real_termios,
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a2232_chars_in_buffer,
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NULL /* a2232_getserial */
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static void *a2232_driver_ID = &a2232_driver_ID; // Some memory address WE own.
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static struct a2232_port a2232_ports[MAX_A2232_BOARDS*NUMLINES];
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/* TTY driver structs */
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static struct tty_driver *a2232_driver;
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/* nr of cards completely (all ports) and correctly configured */
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/* zorro_dev structs for the A2232's */
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static struct zorro_dev *zd_a2232[MAX_A2232_BOARDS];
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/***************************** End of Global variables **************/
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/* Helper functions */
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static inline volatile struct a2232memory *a2232mem(unsigned int board)
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return (volatile struct a2232memory *)ZTWO_VADDR(zd_a2232[board]->resource.start);
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static inline volatile struct a2232status *a2232stat(unsigned int board,
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unsigned int portonboard)
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volatile struct a2232memory *mem = a2232mem(board);
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return &(mem->Status[portonboard]);
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static inline void a2232_receive_char(struct a2232_port *port, int ch, int err)
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/* Mostly stolen from other drivers.
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Maybe one could implement a more efficient version by not only
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transferring one character at a time.
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struct tty_struct *tty = port->gs.port.tty;
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tty_insert_flip_char(tty, ch, err);
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tty_flip_buffer_push(tty);
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/***************************** Functions ****************************/
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/*** BEGIN OF REAL_DRIVER FUNCTIONS ***/
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static void a2232_disable_tx_interrupts(void *ptr)
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struct a2232_port *port;
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volatile struct a2232status *stat;
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stat = a2232stat(port->which_a2232, port->which_port_on_a2232);
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stat->OutDisable = -1;
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/* Does this here really have to be? */
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local_irq_save(flags);
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port->gs.port.flags &= ~GS_TX_INTEN;
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local_irq_restore(flags);
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static void a2232_enable_tx_interrupts(void *ptr)
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struct a2232_port *port;
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volatile struct a2232status *stat;
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stat = a2232stat(port->which_a2232, port->which_port_on_a2232);
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stat->OutDisable = 0;
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/* Does this here really have to be? */
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local_irq_save(flags);
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port->gs.port.flags |= GS_TX_INTEN;
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local_irq_restore(flags);
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static void a2232_disable_rx_interrupts(void *ptr)
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struct a2232_port *port;
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port->disable_rx = -1;
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static void a2232_enable_rx_interrupts(void *ptr)
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struct a2232_port *port;
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port->disable_rx = 0;
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static int a2232_carrier_raised(struct tty_port *port)
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struct a2232_port *ap = container_of(port, struct a2232_port, gs.port);
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return ap->cd_status;
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static void a2232_shutdown_port(void *ptr)
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struct a2232_port *port;
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volatile struct a2232status *stat;
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stat = a2232stat(port->which_a2232, port->which_port_on_a2232);
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local_irq_save(flags);
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port->gs.port.flags &= ~GS_ACTIVE;
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if (port->gs.port.tty && port->gs.port.tty->termios->c_cflag & HUPCL) {
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/* Set DTR and RTS to Low, flush output.
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The NetBSD driver "msc.c" does it this way. */
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stat->Command = ( (stat->Command & ~A2232CMD_CMask) |
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local_irq_restore(flags);
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/* After analyzing control flow, I think a2232_shutdown_port
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is actually the last call from the system when at application
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level someone issues a "echo Hello >>/dev/ttyY0".
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Therefore I think the MOD_DEC_USE_COUNT should be here and
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not in "a2232_close()". See the comment in "sx.c", too.
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If you run into problems, compile this driver into the
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kernel instead of compiling it as a module. */
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static int a2232_set_real_termios(void *ptr)
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unsigned int cflag, baud, chsize, stopb, parity, softflow;
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int a2232_param, a2232_cmd;
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struct a2232_port *port = ptr;
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volatile struct a2232status *status;
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volatile struct a2232memory *mem;
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if (!port->gs.port.tty || !port->gs.port.tty->termios) return 0;
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status = a2232stat(port->which_a2232, port->which_port_on_a2232);
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mem = a2232mem(port->which_a2232);
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a2232_param = a2232_cmd = 0;
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baud = port->gs.baud;
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/* speed == 0 -> drop DTR, do nothing else */
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local_irq_save(flags);
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// Clear DTR (and RTS... mhhh).
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status->Command = ( (status->Command & ~A2232CMD_CMask) |
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status->OutFlush = -1;
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local_irq_restore(flags);
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rate = A2232_BAUD_TABLE_NOAVAIL;
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for (i=0; i < A2232_BAUD_TABLE_NUM_RATES * 3; i += 3){
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if (a2232_baud_table[i] == baud){
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if (mem->Common.Crystal == A2232_TURBO) rate = a2232_baud_table[i+2];
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else rate = a2232_baud_table[i+1];
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if (rate == A2232_BAUD_TABLE_NOAVAIL){
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printk("a2232: Board %d Port %d unsupported baud rate: %d baud. Using another.\n",port->which_a2232,port->which_port_on_a2232,baud);
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// This is useful for both (turbo or normal) Crystal versions.
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rate = A2232PARAM_B9600;
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cflag = port->gs.port.tty->termios->c_cflag;
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// get character size
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chsize = cflag & CSIZE;
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case CS8: a2232_param |= A2232PARAM_8Bit; break;
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case CS7: a2232_param |= A2232PARAM_7Bit; break;
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case CS6: a2232_param |= A2232PARAM_6Bit; break;
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case CS5: a2232_param |= A2232PARAM_5Bit; break;
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default: printk("a2232: Board %d Port %d unsupported character size: %d. Using 8 data bits.\n",
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port->which_a2232,port->which_port_on_a2232,chsize);
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a2232_param |= A2232PARAM_8Bit; break;
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// get number of stop bits
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stopb = cflag & CSTOPB;
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if (stopb){ // two stop bits instead of one
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printk("a2232: Board %d Port %d 2 stop bits unsupported. Using 1 stop bit.\n",
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port->which_a2232,port->which_port_on_a2232);
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// Warn if RTS/CTS not wanted
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if (!(cflag & CRTSCTS)){
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#ifndef A2232_SUPPRESS_RTSCTS_WARNING
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printk("a2232: Board %d Port %d cannot switch off firmware-implemented RTS/CTS hardware flow control.\n",
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port->which_a2232,port->which_port_on_a2232);
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/* I think this is correct.
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However, IXOFF means _input_ flow control and I wonder
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if one should care about IXON _output_ flow control,
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too. If this makes problems, one should turn the A2232
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firmware XON/XOFF "SoftFlow" flow control off and use
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the conventional way of inserting START/STOP characters
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by hand in throttle()/unthrottle().
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softflow = !!( port->gs.port.tty->termios->c_iflag & IXOFF );
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// get Parity (Enabled/Disabled? If Enabled, Odd or Even?)
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parity = cflag & (PARENB | PARODD);
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if (parity & PARENB){
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if (parity & PARODD){
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a2232_cmd |= A2232CMD_OddParity;
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a2232_cmd |= A2232CMD_EvenParity;
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else a2232_cmd |= A2232CMD_NoParity;
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/* Hmm. Maybe an own a2232_port structure
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member would be cleaner? */
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port->gs.port.flags &= ~ASYNC_CHECK_CD;
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port->gs.port.flags |= ASYNC_CHECK_CD;
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/* Now we have all parameters and can go to set them: */
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local_irq_save(flags);
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status->Param = a2232_param | A2232PARAM_RcvBaud;
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status->Command = a2232_cmd | A2232CMD_Open | A2232CMD_Enable;
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status->SoftFlow = softflow;
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status->OutDisable = 0;
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local_irq_restore(flags);
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static int a2232_chars_in_buffer(void *ptr)
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struct a2232_port *port;
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volatile struct a2232status *status;
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unsigned char ret; /* we need modulo-256 arithmetics */
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status = a2232stat(port->which_a2232, port->which_port_on_a2232);
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#if A2232_IOBUFLEN != 256
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#error "Re-Implement a2232_chars_in_buffer()!"
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ret = (status->OutHead - status->OutTail);
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static void a2232_close(void *ptr)
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a2232_disable_tx_interrupts(ptr);
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a2232_disable_rx_interrupts(ptr);
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/* see the comment in a2232_shutdown_port above. */
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static void a2232_hungup(void *ptr)
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/*** END OF REAL_DRIVER FUNCTIONS ***/
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/*** BEGIN FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/
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static int a2232_ioctl( struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg)
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static void a2232_throttle(struct tty_struct *tty)
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/* Throttle: System cannot take another chars: Drop RTS or
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send the STOP char or whatever.
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The A2232 firmware does RTS/CTS anyway, and XON/XOFF
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if switched on. So the only thing we can do at this
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layer here is not taking any characters out of the
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A2232 buffer any more. */
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struct a2232_port *port = tty->driver_data;
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port->throttle_input = -1;
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static void a2232_unthrottle(struct tty_struct *tty)
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/* Unthrottle: dual to "throttle()" above. */
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struct a2232_port *port = tty->driver_data;
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port->throttle_input = 0;
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static int a2232_open(struct tty_struct * tty, struct file * filp)
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/* More or less stolen from other drivers. */
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struct a2232_port *port;
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port = &a2232_ports[line];
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tty->driver_data = port;
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port->gs.port.tty = tty;
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port->gs.port.count++;
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retval = gs_init_port(&port->gs);
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port->gs.port.count--;
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port->gs.port.flags |= GS_ACTIVE;
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retval = gs_block_til_ready(port, filp);
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port->gs.port.count--;
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a2232_enable_rx_interrupts(port);
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/*** END OF FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/
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static irqreturn_t a2232_vbl_inter(int irq, void *data)
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#if A2232_IOBUFLEN != 256
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#error "Re-Implement a2232_vbl_inter()!"
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struct a2232_port *port;
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volatile struct a2232memory *mem;
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volatile struct a2232status *status;
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unsigned char newhead;
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unsigned char bufpos; /* Must be unsigned char. We need the modulo-256 arithmetics */
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unsigned char ncd, ocd, ccd; /* names consistent with the NetBSD driver */
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volatile u_char *ibuf, *cbuf, *obuf;
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for (n = 0; n < nr_a2232; n++){ /* for every completely initialized A2232 board */
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for (p = 0; p < NUMLINES; p++){ /* for every port on this board */
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port = &a2232_ports[n*NUMLINES+p];
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if ( port->gs.port.flags & GS_ACTIVE ){ /* if the port is used */
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status = a2232stat(n,p);
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if (!port->disable_rx && !port->throttle_input){ /* If input is not disabled */
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newhead = status->InHead; /* 65EC02 write pointer */
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bufpos = status->InTail;
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/* check for input for this port */
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if (newhead != bufpos) {
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/* buffer for input chars/events */
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ibuf = mem->InBuf[p];
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/* data types of bytes in ibuf */
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cbuf = mem->InCtl[p];
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/* do for all chars */
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while (bufpos != newhead) {
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/* which type of input data? */
545
switch (cbuf[bufpos]) {
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/* switch on input event (CD, BREAK, etc.) */
547
case A2232INCTL_EVENT:
548
switch (ibuf[bufpos++]) {
549
case A2232EVENT_Break:
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/* TODO: Handle BREAK signal */
552
/* A2232EVENT_CarrierOn and A2232EVENT_CarrierOff are
553
handled in a separate queue and should not occur here. */
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case A2232EVENT_Sync:
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printk("A2232: 65EC02 software sent SYNC event, don't know what to do. Ignoring.");
558
printk("A2232: 65EC02 software broken, unknown event type %d occurred.\n",ibuf[bufpos-1]);
559
} /* event type switch */
561
case A2232INCTL_CHAR:
562
/* Receive incoming char */
563
a2232_receive_char(port, ibuf[bufpos], err);
567
printk("A2232: 65EC02 software broken, unknown data type %d occurred.\n",cbuf[bufpos]);
569
} /* switch on input data type */
570
} /* while there's something in the buffer */
572
status->InTail = bufpos; /* tell 65EC02 what we've read */
574
} /* if there was something in the buffer */
575
} /* If input is not disabled */
577
/* Now check if there's something to output */
578
obuf = mem->OutBuf[p];
579
bufpos = status->OutHead;
580
while ( (port->gs.xmit_cnt > 0) &&
581
(!port->gs.port.tty->stopped) &&
582
(!port->gs.port.tty->hw_stopped) ){ /* While there are chars to transmit */
583
if (((bufpos+1) & A2232_IOBUFLENMASK) != status->OutTail) { /* If the A2232 buffer is not full */
584
ch = port->gs.xmit_buf[port->gs.xmit_tail]; /* get the next char to transmit */
585
port->gs.xmit_tail = (port->gs.xmit_tail+1) & (SERIAL_XMIT_SIZE-1); /* modulo-addition for the gs.xmit_buf ring-buffer */
586
obuf[bufpos++] = ch; /* put it into the A2232 buffer */
589
else{ /* If A2232 the buffer is full */
590
break; /* simply stop filling it. */
593
status->OutHead = bufpos;
595
/* WakeUp if output buffer runs low */
596
if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) {
597
tty_wakeup(port->gs.port.tty);
599
} // if the port is used
600
} // for every port on the board
602
/* Now check the CD message queue */
603
newhead = mem->Common.CDHead;
604
bufpos = mem->Common.CDTail;
605
if (newhead != bufpos){ /* There are CD events in queue */
606
ocd = mem->Common.CDStatus; /* get old status bits */
607
while (newhead != bufpos){ /* read all events */
608
ncd = mem->CDBuf[bufpos++]; /* get one event */
609
ccd = ncd ^ ocd; /* mask of changed lines */
610
ocd = ncd; /* save new status bits */
611
for(p=0; p < NUMLINES; p++){ /* for all ports */
612
if (ccd & 1){ /* this one changed */
614
struct a2232_port *port = &a2232_ports[n*7+p];
615
port->cd_status = !(ncd & 1); /* ncd&1 <=> CD is now off */
617
if (!(port->gs.port.flags & ASYNC_CHECK_CD))
618
; /* Don't report DCD changes */
619
else if (port->cd_status) { // if DCD on: DCD went UP!
621
/* Are we blocking in open?*/
622
wake_up_interruptible(&port->gs.port.open_wait);
624
else { // if DCD off: DCD went DOWN!
625
if (port->gs.port.tty)
626
tty_hangup (port->gs.port.tty);
629
} // if CD changed for this port
631
ncd >>= 1; /* Shift bits for next line */
633
} // while CD events in queue
634
mem->Common.CDStatus = ocd; /* save new status */
635
mem->Common.CDTail = bufpos; /* remove events */
636
} // if events in CD queue
638
} // for every completely initialized A2232 board
642
static const struct tty_port_operations a2232_port_ops = {
643
.carrier_raised = a2232_carrier_raised,
646
static void a2232_init_portstructs(void)
648
struct a2232_port *port;
651
for (i = 0; i < MAX_A2232_BOARDS*NUMLINES; i++) {
652
port = a2232_ports + i;
653
tty_port_init(&port->gs.port);
654
port->gs.port.ops = &a2232_port_ops;
655
port->which_a2232 = i/NUMLINES;
656
port->which_port_on_a2232 = i%NUMLINES;
657
port->disable_rx = port->throttle_input = port->cd_status = 0;
658
port->gs.magic = A2232_MAGIC;
659
port->gs.close_delay = HZ/2;
660
port->gs.closing_wait = 30 * HZ;
661
port->gs.rd = &a2232_real_driver;
665
static const struct tty_operations a2232_ops = {
669
.put_char = gs_put_char,
670
.flush_chars = gs_flush_chars,
671
.write_room = gs_write_room,
672
.chars_in_buffer = gs_chars_in_buffer,
673
.flush_buffer = gs_flush_buffer,
674
.ioctl = a2232_ioctl,
675
.throttle = a2232_throttle,
676
.unthrottle = a2232_unthrottle,
677
.set_termios = gs_set_termios,
683
static int a2232_init_drivers(void)
687
a2232_driver = alloc_tty_driver(NUMLINES * nr_a2232);
690
a2232_driver->owner = THIS_MODULE;
691
a2232_driver->driver_name = "commodore_a2232";
692
a2232_driver->name = "ttyY";
693
a2232_driver->major = A2232_NORMAL_MAJOR;
694
a2232_driver->type = TTY_DRIVER_TYPE_SERIAL;
695
a2232_driver->subtype = SERIAL_TYPE_NORMAL;
696
a2232_driver->init_termios = tty_std_termios;
697
a2232_driver->init_termios.c_cflag =
698
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
699
a2232_driver->init_termios.c_ispeed = 9600;
700
a2232_driver->init_termios.c_ospeed = 9600;
701
a2232_driver->flags = TTY_DRIVER_REAL_RAW;
702
tty_set_operations(a2232_driver, &a2232_ops);
703
if ((error = tty_register_driver(a2232_driver))) {
704
printk(KERN_ERR "A2232: Couldn't register A2232 driver, error = %d\n",
706
put_tty_driver(a2232_driver);
712
static int __init a2232board_init(void)
716
unsigned int boardaddr;
721
volatile struct a2232memory *mem;
725
return -ENODEV; /* This driver is not SMP aware. Is there an SMP ZorroII-bus-machine? */
732
printk("Commodore A2232 driver initializing.\n"); /* Say that we're alive. */
736
while ( (z = zorro_find_device(ZORRO_WILDCARD, z)) ){
737
if ( (z->id != ZORRO_PROD_CBM_A2232_PROTOTYPE) &&
738
(z->id != ZORRO_PROD_CBM_A2232) ){
739
continue; // The board found was no A2232
741
if (!zorro_request_device(z,"A2232 driver"))
744
printk("Commodore A2232 found (#%d).\n",nr_a2232);
746
zd_a2232[nr_a2232] = z;
748
boardaddr = ZTWO_VADDR( z->resource.start );
749
printk("Board is located at address 0x%x, size is 0x%x.\n", boardaddr, (unsigned int) ((z->resource.end+1) - (z->resource.start)));
751
mem = (volatile struct a2232memory *) boardaddr;
753
(void) mem->Enable6502Reset; /* copy the code across to the board */
754
to = (u_char *)mem; from = a2232_65EC02code; bcount = sizeof(a2232_65EC02code) - 2;
755
start = *(short *)from;
756
from += sizeof(start);
758
while(bcount--) *to++ = *from++;
759
printk("65EC02 software uploaded to the A2232 memory.\n");
761
mem->Common.Crystal = A2232_UNKNOWN; /* use automatic speed check */
763
/* start 6502 running */
764
(void) mem->ResetBoard;
765
printk("A2232's 65EC02 CPU up and running.\n");
767
/* wait until speed detector has finished */
768
for (bcount = 0; bcount < 2000; bcount++) {
770
if (mem->Common.Crystal)
773
printk((mem->Common.Crystal?"A2232 oscillator crystal detected by 65EC02 software: ":"65EC02 software could not determine A2232 oscillator crystal: "));
774
switch (mem->Common.Crystal){
776
printk("Unknown crystal.\n");
779
printk ("Normal crystal.\n");
782
printk ("Turbo crystal.\n");
785
printk ("0x%x. Huh?\n",mem->Common.Crystal);
792
printk("Total: %d A2232 boards initialized.\n", nr_a2232); /* Some status report if no card was found */
794
a2232_init_portstructs();
797
a2232_init_drivers also registers the drivers. Must be here because all boards
798
have to be detected first.
800
if (a2232_init_drivers()) return -ENODEV; // maybe we should use a different -Exxx?
802
error = request_irq(IRQ_AMIGA_VERTB, a2232_vbl_inter, 0,
803
"A2232 serial VBL", a2232_driver_ID);
805
for (i = 0; i < nr_a2232; i++)
806
zorro_release_device(zd_a2232[i]);
807
tty_unregister_driver(a2232_driver);
808
put_tty_driver(a2232_driver);
813
static void __exit a2232board_exit(void)
817
for (i = 0; i < nr_a2232; i++) {
818
zorro_release_device(zd_a2232[i]);
821
tty_unregister_driver(a2232_driver);
822
put_tty_driver(a2232_driver);
823
free_irq(IRQ_AMIGA_VERTB, a2232_driver_ID);
826
module_init(a2232board_init);
827
module_exit(a2232board_exit);
829
MODULE_AUTHOR("Enver Haase");
830
MODULE_DESCRIPTION("Amiga A2232 multi-serial board driver");
831
MODULE_LICENSE("GPL");
added
removed
drivers/char/ser_a2232.c
