blob: d338bd0e0ca609b29cb8b5bccb344bf099e8b0c6 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
__u8 request, __u8 requesttype, __u16 value, __u16 index,
void *data, __u16 size);
unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
struct usb_host_interface *alts);
* retrieve usb_interface descriptor from the host interface
* (conditional for compatibility with the older API)
#define get_iface_desc(iface) (&(iface)->desc)
#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
#define get_ep_desc(ep) (&(ep)->desc)
#define get_cfg_desc(cfg) (&(cfg)->desc)
#define snd_usb_get_speed(dev) ((dev)->speed)
static inline int snd_usb_ctrl_intf(struct snd_usb_audio *chip)
return get_iface_desc(chip->ctrl_intf)->bInterfaceNumber;
#endif /* __USBAUDIO_HELPER_H */