X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fpnp%2Fcard.c;h=4a651f69e17c0c2c26f1e30b1bfb6c187d2b25cb;hb=b54452b07a7b1b8cc1385edba3ef2ef6d4679d5a;hp=a379a38c196c4c105799ef857389b0ebfb4d9af7;hpb=9dd78466c956ac4b4f38e12032dc4249ccf57ad1;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c index a379a38..4a651f6 100644 --- a/drivers/pnp/card.c +++ b/drivers/pnp/card.c @@ -2,12 +2,13 @@ * card.c - contains functions for managing groups of PnP devices * * Copyright 2002 Adam Belay - * */ #include +#include #include #include +#include #include "base.h" LIST_HEAD(pnp_cards); @@ -17,19 +18,22 @@ static const struct pnp_card_device_id *match_card(struct pnp_card_driver *drv, struct pnp_card *card) { const struct pnp_card_device_id *drv_id = drv->id_table; + while (*drv_id->id) { if (compare_pnp_id(card->id, drv_id->id)) { int i = 0; + for (;;) { int found; struct pnp_dev *dev; - if (i == PNP_MAX_DEVICES - || !*drv_id->devs[i].id) + + if (i == PNP_MAX_DEVICES || + !*drv_id->devs[i].id) return drv_id; found = 0; card_for_each_dev(card, dev) { - if (compare_pnp_id - (dev->id, drv_id->devs[i].id)) { + if (compare_pnp_id(dev->id, + drv_id->devs[i].id)) { found = 1; break; } @@ -52,6 +56,7 @@ static void card_remove(struct pnp_dev *dev) static void card_remove_first(struct pnp_dev *dev) { struct pnp_card_driver *drv = to_pnp_card_driver(dev->driver); + if (!dev->card || !drv) return; if (drv->remove) @@ -96,33 +101,41 @@ static int card_probe(struct pnp_card *card, struct pnp_card_driver *drv) * pnp_add_card_id - adds an EISA id to the specified card * @id: pointer to a pnp_id structure * @card: pointer to the desired card - * */ - -int pnp_add_card_id(struct pnp_id *id, struct pnp_card *card) +static struct pnp_id *pnp_add_card_id(struct pnp_card *card, char *id) { - struct pnp_id *ptr; - if (!id) - return -EINVAL; - if (!card) - return -EINVAL; - id->next = NULL; + struct pnp_id *dev_id, *ptr; + + dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL); + if (!dev_id) + return NULL; + + dev_id->id[0] = id[0]; + dev_id->id[1] = id[1]; + dev_id->id[2] = id[2]; + dev_id->id[3] = tolower(id[3]); + dev_id->id[4] = tolower(id[4]); + dev_id->id[5] = tolower(id[5]); + dev_id->id[6] = tolower(id[6]); + dev_id->id[7] = '\0'; + + dev_id->next = NULL; ptr = card->id; while (ptr && ptr->next) ptr = ptr->next; if (ptr) - ptr->next = id; + ptr->next = dev_id; else - card->id = id; - return 0; + card->id = dev_id; + + return dev_id; } static void pnp_free_card_ids(struct pnp_card *card) { struct pnp_id *id; struct pnp_id *next; - if (!card) - return; + id = card->id; while (id) { next = id->next; @@ -134,15 +147,44 @@ static void pnp_free_card_ids(struct pnp_card *card) static void pnp_release_card(struct device *dmdev) { struct pnp_card *card = to_pnp_card(dmdev); + pnp_free_card_ids(card); kfree(card); } +struct pnp_card *pnp_alloc_card(struct pnp_protocol *protocol, int id, char *pnpid) +{ + struct pnp_card *card; + struct pnp_id *dev_id; + + card = kzalloc(sizeof(struct pnp_card), GFP_KERNEL); + if (!card) + return NULL; + + card->protocol = protocol; + card->number = id; + + card->dev.parent = &card->protocol->dev; + dev_set_name(&card->dev, "%02x:%02x", card->protocol->number, card->number); + + card->dev.coherent_dma_mask = DMA_BIT_MASK(24); + card->dev.dma_mask = &card->dev.coherent_dma_mask; + + dev_id = pnp_add_card_id(card, pnpid); + if (!dev_id) { + kfree(card); + return NULL; + } + + return card; +} + static ssize_t pnp_show_card_name(struct device *dmdev, struct device_attribute *attr, char *buf) { char *str = buf; struct pnp_card *card = to_pnp_card(dmdev); + str += sprintf(str, "%s\n", card->name); return (str - buf); } @@ -168,6 +210,7 @@ static DEVICE_ATTR(card_id, S_IRUGO, pnp_show_card_ids, NULL); static int pnp_interface_attach_card(struct pnp_card *card) { int rc = device_create_file(&card->dev, &dev_attr_name); + if (rc) return rc; @@ -177,7 +220,7 @@ static int pnp_interface_attach_card(struct pnp_card *card) return 0; - err_name: +err_name: device_remove_file(&card->dev, &dev_attr_name); return rc; } @@ -186,59 +229,51 @@ static int pnp_interface_attach_card(struct pnp_card *card) * pnp_add_card - adds a PnP card to the PnP Layer * @card: pointer to the card to add */ - int pnp_add_card(struct pnp_card *card) { int error; struct list_head *pos, *temp; - if (!card || !card->protocol) - return -EINVAL; - sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number, - card->number); - card->dev.parent = &card->protocol->dev; card->dev.bus = NULL; card->dev.release = &pnp_release_card; error = device_register(&card->dev); + if (error) { + dev_err(&card->dev, "could not register (err=%d)\n", error); + return error; + } - if (error == 0) { - pnp_interface_attach_card(card); - spin_lock(&pnp_lock); - list_add_tail(&card->global_list, &pnp_cards); - list_add_tail(&card->protocol_list, &card->protocol->cards); - spin_unlock(&pnp_lock); - - /* we wait until now to add devices in order to ensure the drivers - * will be able to use all of the related devices on the card - * without waiting any unresonable length of time */ - list_for_each(pos, &card->devices) { - struct pnp_dev *dev = card_to_pnp_dev(pos); - __pnp_add_device(dev); - } + pnp_interface_attach_card(card); + spin_lock(&pnp_lock); + list_add_tail(&card->global_list, &pnp_cards); + list_add_tail(&card->protocol_list, &card->protocol->cards); + spin_unlock(&pnp_lock); - /* match with card drivers */ - list_for_each_safe(pos, temp, &pnp_card_drivers) { - struct pnp_card_driver *drv = - list_entry(pos, struct pnp_card_driver, - global_list); - card_probe(card, drv); - } - } else - pnp_err("sysfs failure, card '%s' will be unavailable", - card->dev.bus_id); - return error; + /* we wait until now to add devices in order to ensure the drivers + * will be able to use all of the related devices on the card + * without waiting an unreasonable length of time */ + list_for_each(pos, &card->devices) { + struct pnp_dev *dev = card_to_pnp_dev(pos); + __pnp_add_device(dev); + } + + /* match with card drivers */ + list_for_each_safe(pos, temp, &pnp_card_drivers) { + struct pnp_card_driver *drv = + list_entry(pos, struct pnp_card_driver, + global_list); + card_probe(card, drv); + } + return 0; } /** * pnp_remove_card - removes a PnP card from the PnP Layer * @card: pointer to the card to remove */ - void pnp_remove_card(struct pnp_card *card) { struct list_head *pos, *temp; - if (!card) - return; + device_unregister(&card->dev); spin_lock(&pnp_lock); list_del(&card->global_list); @@ -255,15 +290,12 @@ void pnp_remove_card(struct pnp_card *card) * @card: pointer to the card to add to * @dev: pointer to the device to add */ - int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev) { - if (!card || !dev || !dev->protocol) - return -EINVAL; dev->dev.parent = &card->dev; dev->card_link = NULL; - snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x", - dev->protocol->number, card->number, dev->number); + dev_set_name(&dev->dev, "%02x:%02x.%02x", + dev->protocol->number, card->number, dev->number); spin_lock(&pnp_lock); dev->card = card; list_add_tail(&dev->card_list, &card->devices); @@ -275,7 +307,6 @@ int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev) * pnp_remove_card_device- removes a device from the specified card * @dev: pointer to the device to remove */ - void pnp_remove_card_device(struct pnp_dev *dev) { spin_lock(&pnp_lock); @@ -291,7 +322,6 @@ void pnp_remove_card_device(struct pnp_dev *dev) * @id: pointer to a PnP ID structure that explains the rules for finding the device * @from: Starting place to search from. If NULL it will start from the begining. */ - struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, const char *id, struct pnp_dev *from) { @@ -299,15 +329,17 @@ struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, struct pnp_dev *dev; struct pnp_card_driver *drv; struct pnp_card *card; + if (!clink || !id) - goto done; + return NULL; + card = clink->card; drv = clink->driver; if (!from) { pos = card->devices.next; } else { if (from->card != card) - goto done; + return NULL; pos = from->card_list.next; } while (pos != &card->devices) { @@ -317,10 +349,9 @@ struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, pos = pos->next; } - done: return NULL; - found: +found: dev->card_link = clink; dev->dev.driver = &drv->link.driver; if (pnp_bus_type.probe(&dev->dev)) @@ -330,7 +361,7 @@ struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, return dev; - err_out: +err_out: dev->dev.driver = NULL; dev->card_link = NULL; return NULL; @@ -340,12 +371,10 @@ struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, * pnp_release_card_device - call this when the driver no longer needs the device * @dev: pointer to the PnP device stucture */ - void pnp_release_card_device(struct pnp_dev *dev) { struct pnp_card_driver *drv = dev->card_link->driver; - if (!drv) - return; + drv->link.remove = &card_remove; device_release_driver(&dev->dev); drv->link.remove = &card_remove_first; @@ -357,6 +386,7 @@ void pnp_release_card_device(struct pnp_dev *dev) static int card_suspend(struct pnp_dev *dev, pm_message_t state) { struct pnp_card_link *link = dev->card_link; + if (link->pm_state.event == state.event) return 0; link->pm_state = state; @@ -366,6 +396,7 @@ static int card_suspend(struct pnp_dev *dev, pm_message_t state) static int card_resume(struct pnp_dev *dev) { struct pnp_card_link *link = dev->card_link; + if (link->pm_state.event == PM_EVENT_ON) return 0; link->pm_state = PMSG_ON; @@ -377,7 +408,6 @@ static int card_resume(struct pnp_dev *dev) * pnp_register_card_driver - registers a PnP card driver with the PnP Layer * @drv: pointer to the driver to register */ - int pnp_register_card_driver(struct pnp_card_driver *drv) { int error; @@ -411,7 +441,6 @@ int pnp_register_card_driver(struct pnp_card_driver *drv) * pnp_unregister_card_driver - unregisters a PnP card driver from the PnP Layer * @drv: pointer to the driver to unregister */ - void pnp_unregister_card_driver(struct pnp_card_driver *drv) { spin_lock(&pnp_lock); @@ -420,13 +449,6 @@ void pnp_unregister_card_driver(struct pnp_card_driver *drv) pnp_unregister_driver(&drv->link); } -#if 0 -EXPORT_SYMBOL(pnp_add_card); -EXPORT_SYMBOL(pnp_remove_card); -EXPORT_SYMBOL(pnp_add_card_device); -EXPORT_SYMBOL(pnp_remove_card_device); -EXPORT_SYMBOL(pnp_add_card_id); -#endif /* 0 */ EXPORT_SYMBOL(pnp_request_card_device); EXPORT_SYMBOL(pnp_release_card_device); EXPORT_SYMBOL(pnp_register_card_driver);