/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __USBAUDIO_HELPER_H #define __USBAUDIO_HELPER_H 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 */