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/* Parallel-port initialisation code.
*
* Authors: David Campbell <campbell@torque.net>
* Tim Waugh <tim@cyberelk.demon.co.uk>
* Jose Renau <renau@acm.org>
*
* based on work by Grant Guenther <grant@torque.net>
* and Philip Blundell <Philip.Blundell@pobox.com>
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/tasks.h>
#include <linux/parport.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/malloc.h>
#include <linux/init.h>
#ifndef MODULE
static int io[PARPORT_MAX+1] __initdata = { [0 ... PARPORT_MAX] = 0 };
static int irq[PARPORT_MAX] __initdata = { [0 ... PARPORT_MAX-1] = PARPORT_IRQ_PROBEONLY };
static int dma[PARPORT_MAX] __initdata = { [0 ... PARPORT_MAX-1] = PARPORT_DMA_NONE };
extern int parport_pc_init(int *io, int *irq, int *dma);
extern int parport_ax_init(void);
static int parport_setup_ptr __initdata = 0;
__initfunc(void parport_setup(char *str, int *ints))
{
if (ints[0] == 0) {
if (str && !strncmp(str, "auto", 4)) {
irq[0] = PARPORT_IRQ_AUTO;
dma[0] = PARPORT_DMA_AUTO;
}
else if (str)
printk (KERN_ERR "parport: `%s': huh?\n", str);
else
printk (KERN_ERR "parport: parport=.. what?\n");
return;
}
else if (ints[1] == 0) {
/* Disable parport if "parport=0" in cmdline */
io[0] = PARPORT_DISABLE;
return;
}
if (parport_setup_ptr < PARPORT_MAX) {
char *sep;
io[parport_setup_ptr] = ints[1];
irq[parport_setup_ptr] = PARPORT_IRQ_NONE;
dma[parport_setup_ptr] = PARPORT_DMA_NONE;
if (ints[0] > 1) {
irq[parport_setup_ptr] = ints[2];
if (ints[0] > 2) {
dma[parport_setup_ptr] = ints[3];
goto done;
}
if (str == NULL)
goto done;
goto dma_from_str;
}
else if (str == NULL)
goto done;
else if (!strncmp(str, "auto", 4))
irq[parport_setup_ptr] = PARPORT_IRQ_AUTO;
else if (strncmp(str, "none", 4) != 0) {
printk(KERN_ERR "parport: bad irq `%s'\n", str);
return;
}
if ((sep = strchr(str, ',')) == NULL) goto done;
str = sep+1;
dma_from_str:
if (!strncmp(str, "auto", 4))
dma[parport_setup_ptr] = PARPORT_DMA_AUTO;
else if (strncmp(str, "none", 4) != 0) {
char *ep;
dma[parport_setup_ptr] = simple_strtoul(str, &ep, 0);
if (ep == str) {
printk(KERN_ERR "parport: bad dma `%s'\n",
str);
return;
}
}
done:
parport_setup_ptr++;
} else
printk(KERN_ERR "parport=%s ignored, too many ports\n", str);
}
#endif
#ifdef MODULE
int init_module(void)
{
(void)parport_proc_init(); /* We can go on without it. */
return 0;
}
void cleanup_module(void)
{
parport_proc_cleanup();
}
#else
__initfunc(int parport_init(void))
{
if (io[0] == PARPORT_DISABLE)
return 1;
#ifdef CONFIG_PNP_PARPORT
parport_probe_hook = &parport_probe_one;
#endif
parport_proc_init();
#ifdef CONFIG_PARPORT_PC
parport_pc_init(io, irq, dma);
#endif
#ifdef CONFIG_PARPORT_AX
parport_ax_init();
#endif
return 0;
}
#endif
/* Exported symbols for modules. */
EXPORT_SYMBOL(parport_claim);
EXPORT_SYMBOL(parport_claim_or_block);
EXPORT_SYMBOL(parport_release);
EXPORT_SYMBOL(parport_register_port);
EXPORT_SYMBOL(parport_unregister_port);
EXPORT_SYMBOL(parport_quiesce);
EXPORT_SYMBOL(parport_register_device);
EXPORT_SYMBOL(parport_unregister_device);
EXPORT_SYMBOL(parport_enumerate);
EXPORT_SYMBOL(parport_ieee1284_nibble_mode_ok);
EXPORT_SYMBOL(parport_wait_peripheral);
EXPORT_SYMBOL(parport_proc_register);
EXPORT_SYMBOL(parport_proc_unregister);
EXPORT_SYMBOL(parport_probe_hook);
EXPORT_SYMBOL(parport_parse_irqs);
void inc_parport_count(void)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
void dec_parport_count(void)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
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