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#define __NO_VERSION__
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/usb.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
struct snd_compat_usb_device_id {
__u16 match_flags;
__u16 idVendor;
__u16 idProduct;
__u16 bcdDevice_lo, bcdDevice_hi;
__u8 bDeviceClass;
__u8 bDeviceSubClass;
__u8 bDeviceProtocol;
__u8 bInterfaceClass;
__u8 bInterfaceSubClass;
__u8 bInterfaceProtocol;
unsigned long driver_info;
};
struct usb_device;
struct usb_interface;
struct snd_compat_usb_driver {
const char *name;
void *(*probe)(struct usb_device *dev, unsigned intf, const struct snd_compat_usb_device_id *id);
void (*disconnect)(struct usb_device *, void *);
struct list_head driver_list;
const struct snd_compat_usb_device_id *id_table;
};
int snd_compat_usb_register(struct snd_compat_usb_driver *);
void snd_compat_usb_deregister(struct snd_compat_usb_driver *);
void snd_compat_usb_driver_claim_interface(struct snd_compat_usb_driver *, struct usb_interface *iface, void *ptr);
#define USB_DEVICE_ID_MATCH_VENDOR 0x0001
#define USB_DEVICE_ID_MATCH_PRODUCT 0x0002
#define USB_DEVICE_ID_MATCH_DEV_LO 0x0004
#define USB_DEVICE_ID_MATCH_DEV_HI 0x0008
#define USB_DEVICE_ID_MATCH_DEV_CLASS 0x0010
#define USB_DEVICE_ID_MATCH_DEV_SUBCLASS 0x0020
#define USB_DEVICE_ID_MATCH_DEV_PROTOCOL 0x0040
#define USB_DEVICE_ID_MATCH_INT_CLASS 0x0080
#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
#define MAX_USB_DRIVERS 5
struct snd_usb_reg_table {
struct usb_driver driver;
struct snd_compat_usb_driver *orig;
};
static struct snd_usb_reg_table my_usb_drivers[MAX_USB_DRIVERS];
static void *snd_usb_compat_probe(struct usb_device *dev, unsigned int ifnum)
{
struct snd_compat_usb_driver *p;
struct usb_interface_descriptor *alts = usb_ifnum_to_if(dev, ifnum)->altsetting;
const struct snd_compat_usb_device_id *tbl;
struct snd_compat_usb_device_id id;
int i;
for (i = 0; i < MAX_USB_DRIVERS; i++) {
if (! (p = my_usb_drivers[i].orig))
continue;
for (tbl = p->id_table; tbl->match_flags; tbl++) {
/* we are too lazy to check all entries... */
if ((tbl->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
tbl->idVendor != dev->descriptor.idVendor)
continue;
if ((tbl->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
tbl->idProduct != dev->descriptor.idProduct)
continue;
if ((tbl->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) &&
tbl->bInterfaceClass != alts->bInterfaceClass)
continue;
if ((tbl->match_flags & USB_DEVICE_ID_MATCH_INT_SUBCLASS) &&
tbl->bInterfaceSubClass != alts->bInterfaceSubClass)
continue;
id = *tbl;
id.idVendor = dev->descriptor.idVendor;
id.idProduct = dev->descriptor.idProduct;
id.bInterfaceClass = alts->bInterfaceClass;
id.bInterfaceSubClass = alts->bInterfaceSubClass;
return p->probe(dev, ifnum, &id);
}
}
return NULL;
}
int snd_compat_usb_register(struct snd_compat_usb_driver *driver)
{
int i;
struct usb_driver *drv;
for (i = 0; i < MAX_USB_DRIVERS; i++) {
if (! my_usb_drivers[i].orig)
break;
}
if (i >= MAX_USB_DRIVERS)
return -ENOMEM;
my_usb_drivers[i].orig = driver;
drv = &my_usb_drivers[i].driver;
drv->name = driver->name;
drv->probe = snd_usb_compat_probe;
drv->disconnect = driver->disconnect;
INIT_LIST_HEAD(&drv->driver_list);
usb_register(drv);
return 0;
}
static struct snd_usb_reg_table *find_matching_usb_driver(struct snd_compat_usb_driver *driver)
{
int i;
for (i = 0; i < MAX_USB_DRIVERS; i++) {
if (my_usb_drivers[i].orig == driver)
return &my_usb_drivers[i];
}
return NULL;
}
void snd_compat_usb_deregister(struct snd_compat_usb_driver *driver)
{
struct snd_usb_reg_table *tbl;
if ((tbl = find_matching_usb_driver(driver)) != NULL) {
usb_deregister(&tbl->driver);
tbl->orig = NULL;
}
}
void snd_compat_usb_driver_claim_interface(struct snd_compat_usb_driver *driver, struct usb_interface *iface, void *ptr)
{
struct snd_usb_reg_table *tbl;
if ((tbl = find_matching_usb_driver(driver)) != NULL)
usb_driver_claim_interface(&tbl->driver, iface, ptr);
}
EXPORT_SYMBOL(snd_compat_usb_register);
EXPORT_SYMBOL(snd_compat_usb_deregister);
EXPORT_SYMBOL(snd_compat_usb_driver_claim_interface);
#endif /* LINUX_VERSION < 2.3.0 */
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