From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- sound/usb/helper.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 sound/usb/helper.h (limited to 'sound/usb/helper.h') diff --git a/sound/usb/helper.h b/sound/usb/helper.h new file mode 100644 index 00000000..805c300d --- /dev/null +++ b/sound/usb/helper.h @@ -0,0 +1,36 @@ +#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) + */ +#ifndef get_iface_desc +#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) +#endif + +#ifndef snd_usb_get_speed +#define snd_usb_get_speed(dev) ((dev)->speed) +#endif + +static inline int snd_usb_ctrl_intf(struct snd_usb_audio *chip) +{ + return get_iface_desc(chip->ctrl_intf)->bInterfaceNumber; +} + +#endif /* __USBAUDIO_HELPER_H */ -- cgit