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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __USBAUDIO_ENDPOINT_H3#define __USBAUDIO_ENDPOINT_H4 5#define SND_USB_ENDPOINT_TYPE_DATA 06#define SND_USB_ENDPOINT_TYPE_SYNC 17 8struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip,9 int ep_num);10 11int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type);12 13struct snd_usb_endpoint *14snd_usb_endpoint_open(struct snd_usb_audio *chip,15 const struct audioformat *fp,16 const struct snd_pcm_hw_params *params,17 bool is_sync_ep,18 bool fixed_rate);19void snd_usb_endpoint_close(struct snd_usb_audio *chip,20 struct snd_usb_endpoint *ep);21int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,22 struct snd_usb_endpoint *ep);23int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,24 struct snd_usb_endpoint *ep);25int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock);26 27bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,28 struct snd_usb_endpoint *ep,29 const struct audioformat *fp,30 const struct snd_pcm_hw_params *params);31 32void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,33 struct snd_usb_endpoint *data_ep,34 struct snd_usb_endpoint *sync_ep);35void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep,36 int (*prepare)(struct snd_usb_substream *subs,37 struct urb *urb,38 bool in_stream_lock),39 void (*retire)(struct snd_usb_substream *subs,40 struct urb *urb),41 struct snd_usb_substream *data_subs);42 43int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);44void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool keep_pending);45void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);46void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);47void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);48void snd_usb_endpoint_free_all(struct snd_usb_audio *chip);49 50int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);51int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,52 struct snd_urb_ctx *ctx, int idx,53 unsigned int avail);54int snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep,55 bool in_stream_lock);56 57#endif /* __USBAUDIO_ENDPOINT_H */58