Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __USBAUDIO_HELPER_H
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#define __USBAUDIO_HELPER_H
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unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
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void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
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void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
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int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
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__u8 request, __u8 requesttype, __u16 value, __u16 index,
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void *data, __u16 size);
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unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
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struct usb_host_interface *alts);
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struct usb_host_interface *
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snd_usb_get_host_interface(struct snd_usb_audio *chip, int ifnum, int altsetting);
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int snd_usb_add_ctrl_interface_link(struct snd_usb_audio *chip, int ifnum,
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int ctrlif);
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struct usb_host_interface *snd_usb_find_ctrl_interface(struct snd_usb_audio *chip,
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int ifnum);
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/*
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* retrieve usb_interface descriptor from the host interface
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* (conditional for compatibility with the older API)
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*/
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#define get_iface_desc(iface) (&(iface)->desc)
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#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
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#define get_ep_desc(ep) (&(ep)->desc)
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#define get_cfg_desc(cfg) (&(cfg)->desc)
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#define snd_usb_get_speed(dev) ((dev)->speed)
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static inline int snd_usb_ctrl_intf(struct usb_host_interface *ctrl_intf)
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{
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return get_iface_desc(ctrl_intf)->bInterfaceNumber;
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}
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/* in validate.c */
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bool snd_usb_validate_audio_desc(void *p, int protocol);
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bool snd_usb_validate_midi_desc(void *p);
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#endif /* __USBAUDIO_HELPER_H */
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