#include <linux/idr.h>
#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_bus_match(struct device *dev, struct device_driver *drv)
+{
+ 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, char **envp, int num_envp,
char *buffer, int buffer_size)
{
- struct tifm_dev *fm_dev;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, 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]))
+ "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;
}
#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);
}
.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;
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);
}
EXPORT_SYMBOL(tifm_unmap_sg);
-static int tifm_device_probe(struct device *dev)
-{
- 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)
+void tifm_queue_work(struct work_struct *work)
{
- 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);
}
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;
}
{
class_unregister(&tifm_adapter_class);
bus_unregister(&tifm_bus_type);
+ destroy_workqueue(workqueue);
}
subsys_initcall(tifm_init);
projects / linux-flexiantxendom0-3.2.10.git / blobdiff