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/*
* compat.c - A series of functions to make it easier to convert drivers that use
* the old isapnp APIs. If possible use the new APIs instead.
*
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
*
*/
/* TODO: see if more isapnp functions are needed here */
#include <linux/module.h>
#include <linux/isapnp.h>
#include <linux/string.h>
static void pnp_convert_id(char *buf, unsigned short vendor, unsigned short device)
{
sprintf(buf, "%c%c%c%x%x%x%x",
'A' + ((vendor >> 2) & 0x3f) - 1,
'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
'A' + ((vendor >> 8) & 0x1f) - 1,
(device >> 4) & 0x0f,
device & 0x0f,
(device >> 12) & 0x0f,
(device >> 8) & 0x0f);
}
struct pnp_card *pnp_find_card(unsigned short vendor,
unsigned short device,
struct pnp_card *from)
{
char id[8];
char any[8];
struct list_head *list;
pnp_convert_id(id, vendor, device);
pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID);
list = from ? from->global_list.next : pnp_cards.next;
while (list != &pnp_cards) {
struct pnp_card *card = global_to_pnp_card(list);
if (compare_pnp_id(card->id,id) || (memcmp(id,any,7)==0))
return card;
list = list->next;
}
return NULL;
}
struct pnp_dev *pnp_find_dev(struct pnp_card *card,
unsigned short vendor,
unsigned short function,
struct pnp_dev *from)
{
char id[8];
char any[8];
pnp_convert_id(id, vendor, function);
pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID);
if (card == NULL) { /* look for a logical device from all cards */
struct list_head *list;
list = pnp_global.next;
if (from)
list = from->global_list.next;
while (list != &pnp_global) {
struct pnp_dev *dev = global_to_pnp_dev(list);
if (compare_pnp_id(dev->id,id) || (memcmp(id,any,7)==0))
return dev;
list = list->next;
}
} else {
struct list_head *list;
list = card->devices.next;
if (from) {
list = from->card_list.next;
if (from->card != card) /* something is wrong */
return NULL;
}
while (list != &card->devices) {
struct pnp_dev *dev = card_to_pnp_dev(list);
if (compare_pnp_id(dev->id,id))
return dev;
list = list->next;
}
}
return NULL;
}
EXPORT_SYMBOL(pnp_find_card);
EXPORT_SYMBOL(pnp_find_dev);
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