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/*
* split into mid and low-level for better support of different hardware
* by Joerg Dorchain (dorchain@mpi-sb.mpg.de)
*
* Amiga printer device by Michael Rausch (linux@uni-koblenz.de);
* Atari support added by Andreas Schwab (schwab@ls5.informatik.uni-dortmund.de);
* based upon work from
*
* Copyright (C) 1992 by Jim Weigand and Linus Torvalds
* Copyright (C) 1992,1993 by Michael K. Johnson
* - Thanks much to Gunter Windau for pointing out to me where the error
* checking ought to be.
* Copyright (C) 1993 by Nigel Gamble (added interrupt code)
*/
#include <linux/module.h>
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <asm/irq.h>
#include <asm/setup.h>
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#endif
#ifdef CONFIG_ATARI
#include <linux/delay.h>
#include <linux/sched.h>
#include <asm/atarihw.h>
#include <asm/atariints.h>
#endif
#include <linux/lp_intern.h>
static int minor = -1;
static void lp_int_out(int, int);
static int lp_int_busy(int);
static int lp_int_pout(int);
static int lp_int_online(int);
static void
lp_int_out (int c, int dev)
{
switch (m68k_machtype)
{
#ifdef CONFIG_AMIGA
case MACH_AMIGA:
{
int wait = 0;
while (wait != lp_table[dev]->wait) wait++;
ciaa.prb = c;
}
break;
#endif
#ifdef CONFIG_ATARI
case MACH_ATARI:
{
int wait = 0;
sound_ym.rd_data_reg_sel = 15;
sound_ym.wd_data = c;
sound_ym.rd_data_reg_sel = 14;
while (wait != lp_table[dev]->wait) wait++;
sound_ym.wd_data = sound_ym.rd_data_reg_sel & ~(1 << 5);
while (wait) wait--;
sound_ym.wd_data = sound_ym.rd_data_reg_sel | (1 << 5);
break;
}
#endif
}
}
static int
lp_int_busy (int dev)
{
switch (m68k_machtype)
{
#ifdef CONFIG_AMIGA
case MACH_AMIGA:
return ciab.pra & 1;
#endif
#ifdef CONFIG_ATARI
case MACH_ATARI:
return mfp.par_dt_reg & 1;
#endif
default:
return 0;
}
}
static int
lp_int_pout (int dev)
{
switch (m68k_machtype)
{
#ifdef CONFIG_AMIGA
case MACH_AMIGA:
return ciab.pra & 2;
#endif
#ifdef CONFIG_ATARI
case MACH_ATARI:
#endif
default:
return 0;
}
}
static int
lp_int_online (int dev)
{
switch (m68k_machtype)
{
#ifdef CONFIG_AMIGA
case MACH_AMIGA:
return ciab.pra & 4;
#endif
#ifdef CONFIG_ATARI
case MACH_ATARI:
return !(mfp.par_dt_reg & 1);
#endif
default:
return 0;
}
}
static void lp_int_interrupt(int irq, void *data, struct pt_regs *fp)
{
lp_interrupt(minor);
}
static int lp_int_open(int dev)
{
MOD_INC_USE_COUNT;
return 0;
}
static void lp_int_release(int dev)
{
MOD_DEC_USE_COUNT;
}
static struct lp_struct tab = {
"Builtin parallel port", /* name */
0, /* irq */
lp_int_out,
lp_int_busy,
lp_int_pout,
lp_int_online,
0,
NULL, /* ioctl */
lp_int_open,
lp_int_release,
LP_EXIST,
LP_INIT_CHAR,
LP_INIT_TIME,
LP_INIT_WAIT,
NULL,
NULL,
};
__initfunc(int lp_internal_init(void))
{
#ifdef CONFIG_AMIGA
if (MACH_IS_AMIGA && AMIGAHW_PRESENT(AMI_PARALLEL))
{
ciaa.ddrb = 0xff;
ciab.ddra &= 0xf8;
if (lp_irq)
tab.irq = request_irq(IRQ_AMIGA_CIAA_FLG, lp_int_interrupt,
0, "builtin printer port", lp_int_interrupt);
tab.base = (void *) &ciaa.prb; /* dummy, not used */
tab.type = LP_AMIGA;
}
#endif
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI)
{
unsigned long flags;
save_flags(flags);
cli();
sound_ym.rd_data_reg_sel = 7;
sound_ym.wd_data = (sound_ym.rd_data_reg_sel & 0x3f) | 0xc0;
restore_flags(flags);
if (lp_irq)
tab.irq = request_irq(IRQ_MFP_BUSY, lp_int_interrupt,
IRQ_TYPE_SLOW, "builtin printer port", lp_int_interrupt);
tab.base = (void *) &sound_ym.wd_data; /* dummy, not used */
tab.type = LP_ATARI;
}
#endif
if ((minor = register_parallel(&tab, minor)) < 0) {
printk("builtin lp init: cant get a minor\n");
if (lp_irq) {
#ifdef CONFIG_AMIGA
if (MACH_IS_AMIGA)
free_irq(IRQ_AMIGA_CIAA_FLG, lp_int_interrupt);
#endif
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI)
free_irq(IRQ_MFP_BUSY, lp_int_interrupt);
#endif
}
return -ENODEV;
}
return 0;
}
#ifdef MODULE
int init_module(void)
{
return lp_internal_init();
}
void cleanup_module(void)
{
if (lp_irq) {
#ifdef CONFIG_AMIGA
if (MACH_IS_AMIGA)
free_irq(IRQ_AMIGA_CIAA_FLG, lp_int_interrupt);
#endif
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI)
free_irq(IRQ_MFP_BUSY, lp_int_interrupt);
#endif
}
unregister_parallel(minor);
}
#endif
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