1 #ifndef __USBAUDIO_HELPER_H
2 #define __USBAUDIO_HELPER_H
4 unsigned int snd_usb_combine_bytes(unsigned char *bytes
, int size
);
6 void *snd_usb_find_desc(void *descstart
, int desclen
, void *after
, u8 dtype
);
7 void *snd_usb_find_csint_desc(void *descstart
, int desclen
, void *after
, u8 dsubtype
);
9 int snd_usb_ctl_msg(struct usb_device
*dev
, unsigned int pipe
,
10 __u8 request
, __u8 requesttype
, __u16 value
, __u16 index
,
11 void *data
, __u16 size
, int timeout
);
13 unsigned char snd_usb_parse_datainterval(struct snd_usb_audio
*chip
,
14 struct usb_host_interface
*alts
);
17 * retrieve usb_interface descriptor from the host interface
18 * (conditional for compatibility with the older API)
20 #ifndef get_iface_desc
21 #define get_iface_desc(iface) (&(iface)->desc)
22 #define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
23 #define get_ep_desc(ep) (&(ep)->desc)
24 #define get_cfg_desc(cfg) (&(cfg)->desc)
27 #ifndef snd_usb_get_speed
28 #define snd_usb_get_speed(dev) ((dev)->speed)
31 static inline int snd_usb_ctrl_intf(struct snd_usb_audio
*chip
)
33 return get_iface_desc(chip
->ctrl_intf
)->bInterfaceNumber
;
36 #endif /* __USBAUDIO_HELPER_H */