1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __USBAUDIO_ENDPOINT_H 3 #define __USBAUDIO_ENDPOINT_H 4 5 #define SND_USB_ENDPOINT_TYPE_DATA 0 6 #define SND_USB_ENDPOINT_TYPE_SYNC 1 7 8 struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip, 9 int ep_num); 10 11 int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type); 12 13 struct snd_usb_endpoint * 14 snd_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); 19 void snd_usb_endpoint_close(struct snd_usb_audio *chip, 20 struct snd_usb_endpoint *ep); 21 int snd_usb_endpoint_set_params(struct snd_usb_audio *chip, 22 struct snd_usb_endpoint *ep); 23 int snd_usb_endpoint_prepare(struct snd_usb_audio *chip, 24 struct snd_usb_endpoint *ep); 25 int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock); 26 27 bool 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 32 void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip, 33 struct snd_usb_endpoint *data_ep, 34 struct snd_usb_endpoint *sync_ep); 35 void 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 43 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep); 44 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool keep_pending); 45 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); 46 void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep); 47 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep); 48 void snd_usb_endpoint_free_all(struct snd_usb_audio *chip); 49 50 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep); 51 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep, 52 struct snd_urb_ctx *ctx, int idx, 53 unsigned int avail); 54 int snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep, 55 bool in_stream_lock); 56 57 #endif /* __USBAUDIO_ENDPOINT_H */ 58