X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fmisc%2Ftifm_core.c;h=8f77949f93dd879097604fcc817122bfcef60fbc;hb=ac0b50dd10ac0d30f2732eec0587f3632c2be725;hp=6b10ebe9d9365d89bc40d1487c24a9ed86bf91e8;hpb=fe6af6faec078ec8137631f24cb541f9918244f0;p=powerpc.git diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c index 6b10ebe9d9..8f77949f93 100644 --- a/drivers/misc/tifm_core.c +++ b/drivers/misc/tifm_core.c @@ -14,71 +14,119 @@ #include #define DRIVER_NAME "tifm_core" -#define DRIVER_VERSION "0.7" +#define DRIVER_VERSION "0.8" +static struct workqueue_struct *workqueue; static DEFINE_IDR(tifm_adapter_idr); static DEFINE_SPINLOCK(tifm_adapter_lock); -static tifm_media_id *tifm_device_match(tifm_media_id *ids, - struct tifm_dev *dev) +static const char *tifm_media_type_name(unsigned char type, unsigned char nt) { - while (*ids) { - if (dev->media_id == *ids) - return ids; - ids++; - } - return NULL; + const char *card_type_name[3][3] = { + { "SmartMedia/xD", "MemoryStick", "MMC/SD" }, + { "XD", "MS", "SD"}, + { "xd", "ms", "sd"} + }; + + if (nt > 2 || type < 1 || type > 3) + return NULL; + return card_type_name[nt][type - 1]; } -static int tifm_match(struct device *dev, struct device_driver *drv) +static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id) { - struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev); - struct tifm_driver *fm_drv; - - fm_drv = container_of(drv, struct tifm_driver, driver); - if (!fm_drv->id_table) - return -EINVAL; - if (tifm_device_match(fm_drv->id_table, fm_dev)) + if (sock->type == id->type) return 1; - return -ENODEV; + return 0; } -static int tifm_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int tifm_bus_match(struct device *dev, struct device_driver *drv) { - struct tifm_dev *fm_dev; - int i = 0; - int length = 0; - const char *card_type_name[] = {"INV", "SM", "MS", "SD"}; - - if (!dev || !(fm_dev = container_of(dev, struct tifm_dev, dev))) - return -ENODEV; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "TIFM_CARD_TYPE=%s", card_type_name[fm_dev->media_id])) + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver, + driver); + struct tifm_device_id *ids = fm_drv->id_table; + + if (ids) { + while (ids->type) { + if (tifm_dev_match(sock, ids)) + return 1; + ++ids; + } + } + return 0; +} + +static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + + if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) return -ENOMEM; return 0; } +static int tifm_device_probe(struct device *dev) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); + int rc = -ENODEV; + + get_device(dev); + if (dev->driver && drv->probe) { + rc = drv->probe(sock); + if (!rc) + return 0; + } + put_device(dev); + return rc; +} + +static void tifm_dummy_event(struct tifm_dev *sock) +{ + return; +} + +static int tifm_device_remove(struct device *dev) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); + + if (dev->driver && drv->remove) { + sock->card_event = tifm_dummy_event; + sock->data_event = tifm_dummy_event; + drv->remove(sock); + sock->dev.driver = NULL; + } + + put_device(dev); + return 0; +} + #ifdef CONFIG_PM static int tifm_device_suspend(struct device *dev, pm_message_t state) { - struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev); - struct tifm_driver *drv = fm_dev->drv; + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); - if (drv && drv->suspend) - return drv->suspend(fm_dev, state); + if (dev->driver && drv->suspend) + return drv->suspend(sock, state); return 0; } static int tifm_device_resume(struct device *dev) { - struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev); - struct tifm_driver *drv = fm_dev->drv; + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); - if (drv && drv->resume) - return drv->resume(fm_dev); + if (dev->driver && drv->resume) + return drv->resume(sock); return 0; } @@ -89,19 +137,33 @@ static int tifm_device_resume(struct device *dev) #endif /* CONFIG_PM */ +static ssize_t type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + return sprintf(buf, "%x", sock->type); +} + +static struct device_attribute tifm_dev_attrs[] = { + __ATTR(type, S_IRUGO, type_show, NULL), + __ATTR_NULL +}; + static struct bus_type tifm_bus_type = { - .name = "tifm", - .match = tifm_match, - .uevent = tifm_uevent, - .suspend = tifm_device_suspend, - .resume = tifm_device_resume + .name = "tifm", + .dev_attrs = tifm_dev_attrs, + .match = tifm_bus_match, + .uevent = tifm_uevent, + .probe = tifm_device_probe, + .remove = tifm_device_remove, + .suspend = tifm_device_suspend, + .resume = tifm_device_resume }; static void tifm_free(struct class_device *cdev) { struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev); - kfree(fm->sockets); kfree(fm); } @@ -110,28 +172,25 @@ static struct class tifm_adapter_class = { .release = tifm_free }; -struct tifm_adapter *tifm_alloc_adapter(void) +struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets, + struct device *dev) { struct tifm_adapter *fm; - fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL); + fm = kzalloc(sizeof(struct tifm_adapter) + + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL); if (fm) { fm->cdev.class = &tifm_adapter_class; - spin_lock_init(&fm->lock); + fm->cdev.dev = dev; class_device_initialize(&fm->cdev); + spin_lock_init(&fm->lock); + fm->num_sockets = num_sockets; } return fm; } EXPORT_SYMBOL(tifm_alloc_adapter); -void tifm_free_adapter(struct tifm_adapter *fm) -{ - class_device_put(&fm->cdev); -} -EXPORT_SYMBOL(tifm_free_adapter); - -int tifm_add_adapter(struct tifm_adapter *fm, - int (*mediathreadfn)(void *data)) +int tifm_add_adapter(struct tifm_adapter *fm) { int rc; @@ -141,59 +200,80 @@ int tifm_add_adapter(struct tifm_adapter *fm, spin_lock(&tifm_adapter_lock); rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id); spin_unlock(&tifm_adapter_lock); - if (!rc) { - snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id); - fm->media_switcher = kthread_create(mediathreadfn, - fm, "tifm/%u", fm->id); - - if (!IS_ERR(fm->media_switcher)) - return class_device_add(&fm->cdev); + if (rc) + return rc; + snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id); + rc = class_device_add(&fm->cdev); + if (rc) { spin_lock(&tifm_adapter_lock); idr_remove(&tifm_adapter_idr, fm->id); spin_unlock(&tifm_adapter_lock); - rc = -ENOMEM; } + return rc; } EXPORT_SYMBOL(tifm_add_adapter); void tifm_remove_adapter(struct tifm_adapter *fm) { - class_device_del(&fm->cdev); + unsigned int cnt; + + flush_workqueue(workqueue); + for (cnt = 0; cnt < fm->num_sockets; ++cnt) { + if (fm->sockets[cnt]) + device_unregister(&fm->sockets[cnt]->dev); + } spin_lock(&tifm_adapter_lock); idr_remove(&tifm_adapter_idr, fm->id); spin_unlock(&tifm_adapter_lock); + class_device_del(&fm->cdev); } EXPORT_SYMBOL(tifm_remove_adapter); -void tifm_free_device(struct device *dev) +void tifm_free_adapter(struct tifm_adapter *fm) { - struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev); - kfree(fm_dev); + class_device_put(&fm->cdev); } -EXPORT_SYMBOL(tifm_free_device); +EXPORT_SYMBOL(tifm_free_adapter); -static void tifm_dummy_signal_irq(struct tifm_dev *sock, - unsigned int sock_irq_status) +void tifm_free_device(struct device *dev) { - return; + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + kfree(sock); } +EXPORT_SYMBOL(tifm_free_device); -struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm) +struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id, + unsigned char type) { - struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL); - - if (dev) { - spin_lock_init(&dev->lock); - - dev->dev.parent = fm->dev; - dev->dev.bus = &tifm_bus_type; - dev->dev.release = tifm_free_device; - dev->signal_irq = tifm_dummy_signal_irq; + struct tifm_dev *sock = NULL; + + if (!tifm_media_type_name(type, 0)) + return sock; + + sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL); + if (sock) { + spin_lock_init(&sock->lock); + sock->type = type; + sock->socket_id = id; + sock->card_event = tifm_dummy_event; + sock->data_event = tifm_dummy_event; + + sock->dev.parent = fm->cdev.dev; + sock->dev.bus = &tifm_bus_type; + sock->dev.dma_mask = fm->cdev.dev->dma_mask; + sock->dev.release = tifm_free_device; + + snprintf(sock->dev.bus_id, BUS_ID_SIZE, + "tifm_%s%u:%u", tifm_media_type_name(type, 2), + fm->id, id); + printk(KERN_INFO DRIVER_NAME + ": %s card detected in socket %u:%u\n", + tifm_media_type_name(type, 0), fm->id, id); } - return dev; + return sock; } EXPORT_SYMBOL(tifm_alloc_device); @@ -218,54 +298,15 @@ void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, } EXPORT_SYMBOL(tifm_unmap_sg); -static int tifm_device_probe(struct device *dev) +void tifm_queue_work(struct work_struct *work) { - struct tifm_driver *drv; - struct tifm_dev *fm_dev; - int rc = 0; - const tifm_media_id *id; - - drv = container_of(dev->driver, struct tifm_driver, driver); - fm_dev = container_of(dev, struct tifm_dev, dev); - get_device(dev); - if (!fm_dev->drv && drv->probe && drv->id_table) { - rc = -ENODEV; - id = tifm_device_match(drv->id_table, fm_dev); - if (id) - rc = drv->probe(fm_dev); - if (rc >= 0) { - rc = 0; - fm_dev->drv = drv; - } - } - if (rc) - put_device(dev); - return rc; -} - -static int tifm_device_remove(struct device *dev) -{ - struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev); - struct tifm_driver *drv = fm_dev->drv; - - if (drv) { - fm_dev->signal_irq = tifm_dummy_signal_irq; - if (drv->remove) - drv->remove(fm_dev); - fm_dev->drv = NULL; - } - - put_device(dev); - return 0; + queue_work(workqueue, work); } +EXPORT_SYMBOL(tifm_queue_work); int tifm_register_driver(struct tifm_driver *drv) { drv->driver.bus = &tifm_bus_type; - drv->driver.probe = tifm_device_probe; - drv->driver.remove = tifm_device_remove; - drv->driver.suspend = tifm_device_suspend; - drv->driver.resume = tifm_device_resume; return driver_register(&drv->driver); } @@ -279,13 +320,25 @@ EXPORT_SYMBOL(tifm_unregister_driver); static int __init tifm_init(void) { - int rc = bus_register(&tifm_bus_type); + int rc; - if (!rc) { - rc = class_register(&tifm_adapter_class); - if (rc) - bus_unregister(&tifm_bus_type); - } + workqueue = create_freezeable_workqueue("tifm"); + if (!workqueue) + return -ENOMEM; + + rc = bus_register(&tifm_bus_type); + + if (rc) + goto err_out_wq; + + rc = class_register(&tifm_adapter_class); + if (!rc) + return 0; + + bus_unregister(&tifm_bus_type); + +err_out_wq: + destroy_workqueue(workqueue); return rc; } @@ -294,6 +347,7 @@ static void __exit tifm_exit(void) { class_unregister(&tifm_adapter_class); bus_unregister(&tifm_bus_type); + destroy_workqueue(workqueue); } subsys_initcall(tifm_init);