Viewing file:  init.c (5.78 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* 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/threads.h>
#include <linux/string.h>
#include <linux/parport.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#ifndef MODULE
static int io[PARPORT_MAX+1] __initdata = { [0 ... PARPORT_MAX] = 0 };
#ifdef CONFIG_PARPORT_PC
static int io_hi[PARPORT_MAX+1] __initdata =
{ [0 ... PARPORT_MAX] = PARPORT_IOHI_AUTO };
#endif
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 *io_hi, int *irq, int *dma);
extern int parport_sunbpp_init(void);
extern int parport_amiga_init(void);
extern int parport_mfc3_init(void);
static int parport_setup_ptr __initdata = 0;
/*
* Acceptable parameters:
*
* parport=0
* parport=auto
* parport=0xBASE[,IRQ[,DMA]]
*
* IRQ/DMA may be numeric or 'auto' or 'none'
*/
static int __init parport_setup (char *str)
{
char *endptr;
char *sep;
int val;
if (!str || !*str || (*str == '0' && !*(str+1))) {
/* Disable parport if "parport=0" in cmdline */
io[0] = PARPORT_DISABLE;
return 1;
}
if (!strncmp (str, "auto", 4)) {
irq[0] = PARPORT_IRQ_AUTO;
dma[0] = PARPORT_DMA_AUTO;
return 1;
}
val = simple_strtoul (str, &endptr, 0);
if (endptr == str) {
printk (KERN_WARNING "parport=%s not understood\n", str);
return 1;
}
if (parport_setup_ptr == PARPORT_MAX) {
printk(KERN_ERR "parport=%s ignored, too many ports\n", str);
return 1;
}
io[parport_setup_ptr] = val;
irq[parport_setup_ptr] = PARPORT_IRQ_NONE;
dma[parport_setup_ptr] = PARPORT_DMA_NONE;
sep = strchr (str, ',');
if (sep++) {
if (!strncmp (sep, "auto", 4))
irq[parport_setup_ptr] = PARPORT_IRQ_AUTO;
else if (strncmp (sep, "none", 4)) {
val = simple_strtoul (sep, &endptr, 0);
if (endptr == sep) {
printk (KERN_WARNING
"parport=%s: irq not understood\n",
str);
return 1;
}
irq[parport_setup_ptr] = val;
}
}
sep = strchr (sep, ',');
if (sep++) {
if (!strncmp (sep, "auto", 4))
dma[parport_setup_ptr] = PARPORT_DMA_AUTO;
else if (!strncmp (sep, "nofifo", 6))
dma[parport_setup_ptr] = PARPORT_DMA_NOFIFO;
else if (strncmp (sep, "none", 4)) {
val = simple_strtoul (sep, &endptr, 0);
if (endptr == sep) {
printk (KERN_WARNING
"parport=%s: dma not understood\n",
str);
return 1;
}
dma[parport_setup_ptr] = val;
}
}
parport_setup_ptr++;
return 1;
}
__setup ("parport=", parport_setup);
#endif
#ifdef MODULE
int init_module(void)
{
#ifdef CONFIG_SYSCTL
parport_default_proc_register ();
#endif
return 0;
}
void cleanup_module(void)
{
#ifdef CONFIG_SYSCTL
parport_default_proc_unregister ();
#endif
}
#else
int __init parport_init (void)
{
if (io[0] == PARPORT_DISABLE)
return 1;
#ifdef CONFIG_SYSCTL
parport_default_proc_register ();
#endif
#ifdef CONFIG_PARPORT_PC
parport_pc_init(io, io_hi, irq, dma);
#endif
#ifdef CONFIG_PARPORT_AMIGA
parport_amiga_init();
#endif
#ifdef CONFIG_PARPORT_MFC3
parport_mfc3_init();
#endif
#ifdef CONFIG_PARPORT_ATARI
parport_atari_init();
#endif
#ifdef CONFIG_PARPORT_ARC
parport_arc_init();
#endif
#ifdef CONFIG_PARPORT_SUNBPP
parport_sunbpp_init();
#endif
return 0;
}
__initcall(parport_init);
#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_announce_port);
EXPORT_SYMBOL(parport_unregister_port);
EXPORT_SYMBOL(parport_register_driver);
EXPORT_SYMBOL(parport_unregister_driver);
EXPORT_SYMBOL(parport_register_device);
EXPORT_SYMBOL(parport_unregister_device);
EXPORT_SYMBOL(parport_enumerate);
EXPORT_SYMBOL(parport_get_port);
EXPORT_SYMBOL(parport_put_port);
EXPORT_SYMBOL(parport_find_number);
EXPORT_SYMBOL(parport_find_base);
EXPORT_SYMBOL(parport_negotiate);
EXPORT_SYMBOL(parport_write);
EXPORT_SYMBOL(parport_read);
EXPORT_SYMBOL(parport_ieee1284_wakeup);
EXPORT_SYMBOL(parport_wait_peripheral);
EXPORT_SYMBOL(parport_poll_peripheral);
EXPORT_SYMBOL(parport_wait_event);
EXPORT_SYMBOL(parport_set_timeout);
EXPORT_SYMBOL(parport_ieee1284_interrupt);
EXPORT_SYMBOL(parport_ieee1284_ecp_write_data);
EXPORT_SYMBOL(parport_ieee1284_ecp_read_data);
EXPORT_SYMBOL(parport_ieee1284_ecp_write_addr);
EXPORT_SYMBOL(parport_ieee1284_write_compat);
EXPORT_SYMBOL(parport_ieee1284_read_nibble);
EXPORT_SYMBOL(parport_ieee1284_read_byte);
EXPORT_SYMBOL(parport_ieee1284_epp_write_data);
EXPORT_SYMBOL(parport_ieee1284_epp_read_data);
EXPORT_SYMBOL(parport_ieee1284_epp_write_addr);
EXPORT_SYMBOL(parport_ieee1284_epp_read_addr);
EXPORT_SYMBOL(parport_proc_register);
EXPORT_SYMBOL(parport_proc_unregister);
EXPORT_SYMBOL(parport_device_proc_register);
EXPORT_SYMBOL(parport_device_proc_unregister);
EXPORT_SYMBOL(parport_default_proc_register);
EXPORT_SYMBOL(parport_default_proc_unregister);
EXPORT_SYMBOL(parport_parse_irqs);
EXPORT_SYMBOL(parport_parse_dmas);
#ifdef CONFIG_PARPORT_1284
EXPORT_SYMBOL(parport_open);
EXPORT_SYMBOL(parport_close);
EXPORT_SYMBOL(parport_device_id);
EXPORT_SYMBOL(parport_device_num);
EXPORT_SYMBOL(parport_device_coords);
EXPORT_SYMBOL(parport_daisy_deselect_all);
EXPORT_SYMBOL(parport_daisy_select);
EXPORT_SYMBOL(parport_daisy_init);
EXPORT_SYMBOL(parport_find_device);
EXPORT_SYMBOL(parport_find_class);
#endif
void inc_parport_count(void)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
void dec_parport_count(void)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
|