1 /* 2 * compat.c - A series of functions to make it easier to convert drivers that use 3 * the old isapnp APIs. If possible use the new APIs instead. 4 * 5 * Copyright 2002 Adam Belay <ambx1@neo.rr.com> 6 * 7 */ 8 9 /* TODO: see if more isapnp functions are needed here */ 10 11 #include <linux/module.h> 12 #include <linux/isapnp.h> 13 #include <linux/string.h> 14 15 static void pnp_convert_id(char *buf, unsigned short vendor, unsigned short device) 16 { 17 sprintf(buf, "%c%c%c%x%x%x%x", 18 'A' + ((vendor >> 2) & 0x3f) - 1, 19 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 20 'A' + ((vendor >> 8) & 0x1f) - 1, 21 (device >> 4) & 0x0f, 22 device & 0x0f, 23 (device >> 12) & 0x0f, 24 (device >> 8) & 0x0f); 25 } 26 27 struct pnp_card *pnp_find_card(unsigned short vendor, 28 unsigned short device, 29 struct pnp_card *from) 30 { 31 char id[8]; 32 char any[8]; 33 struct list_head *list; 34 pnp_convert_id(id, vendor, device); 35 pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID); 36 37 list = from ? from->global_list.next : pnp_cards.next; 38 39 while (list != &pnp_cards) { 40 struct pnp_card *card = global_to_pnp_card(list); 41 if (compare_pnp_id(card->id,id) || (memcmp(id,any,7)==0)) 42 return card; 43 list = list->next; 44 } 45 return NULL; 46 } 47 48 struct pnp_dev *pnp_find_dev(struct pnp_card *card, 49 unsigned short vendor, 50 unsigned short function, 51 struct pnp_dev *from) 52 { 53 char id[8]; 54 char any[8]; 55 pnp_convert_id(id, vendor, function); 56 pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID); 57 if (card == NULL) { /* look for a logical device from all cards */ 58 struct list_head *list; 59 60 list = pnp_global.next; 61 if (from) 62 list = from->global_list.next; 63 64 while (list != &pnp_global) { 65 struct pnp_dev *dev = global_to_pnp_dev(list); 66 if (compare_pnp_id(dev->id,id) || (memcmp(id,any,7)==0)) 67 return dev; 68 list = list->next; 69 } 70 } else { 71 struct list_head *list; 72 73 list = card->devices.next; 74 if (from) { 75 list = from->card_list.next; 76 if (from->card != card) /* something is wrong */ 77 return NULL; 78 } 79 while (list != &card->devices) { 80 struct pnp_dev *dev = card_to_pnp_dev(list); 81 if (compare_pnp_id(dev->id,id)) 82 return dev; 83 list = list->next; 84 } 85 } 86 return NULL; 87 } 88 89 EXPORT_SYMBOL(pnp_find_card); 90 EXPORT_SYMBOL(pnp_find_dev); 91