nilfs2: get rid of nilfs_btree uses
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / usb / helper.h
blob09bd943c43bf736c72c915ce99f41180b6be88b9
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)
25 #endif
27 #ifndef snd_usb_get_speed
28 #define snd_usb_get_speed(dev) ((dev)->speed)
29 #endif
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 */