blob: 09bd943c43bf736c72c915ce99f41180b6be88b9 [file] [log] [blame]
Daniel Macke5779992010-03-04 19:46:13 +01001#ifndef __USBAUDIO_HELPER_H
2#define __USBAUDIO_HELPER_H
3
4unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
5
6void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
7void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
8
9int 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);
12
13unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
14 struct usb_host_interface *alts);
15
16/*
17 * retrieve usb_interface descriptor from the host interface
18 * (conditional for compatibility with the older API)
19 */
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)
25#endif
26
27#ifndef snd_usb_get_speed
28#define snd_usb_get_speed(dev) ((dev)->speed)
29#endif
30
Daniel Mack11bcbc42010-06-11 17:34:20 +020031static inline int snd_usb_ctrl_intf(struct snd_usb_audio *chip)
32{
33 return get_iface_desc(chip->ctrl_intf)->bInterfaceNumber;
34}
Daniel Macke5779992010-03-04 19:46:13 +010035
36#endif /* __USBAUDIO_HELPER_H */