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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pnp/isapnp/compat.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/pnp/isapnp/compat.c')
-rw-r--r-- | drivers/pnp/isapnp/compat.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/pnp/isapnp/compat.c b/drivers/pnp/isapnp/compat.c new file mode 100644 index 0000000..3ff7e76 --- /dev/null +++ b/drivers/pnp/isapnp/compat.c @@ -0,0 +1,91 @@ +/* + * 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/config.h> +#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); |