| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- /* 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);
- struct usb_host_interface *
- snd_usb_get_host_interface(struct snd_usb_audio *chip, int ifnum, int altsetting);
- int snd_usb_add_ctrl_interface_link(struct snd_usb_audio *chip, int ifnum,
- int ctrlif);
- struct usb_host_interface *snd_usb_find_ctrl_interface(struct snd_usb_audio *chip,
- int ifnum);
- /*
- * 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 usb_host_interface *ctrl_intf)
- {
- return get_iface_desc(ctrl_intf)->bInterfaceNumber;
- }
- /* in validate.c */
- bool snd_usb_validate_audio_desc(void *p, int protocol);
- bool snd_usb_validate_midi_desc(void *p);
- #endif /* __USBAUDIO_HELPER_H */
|
