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 void snd_usb_endpoint_close(struct snd_usb_audio *chip, 19 struct snd_usb_endpoint *ep); 20 int snd_usb_endpoint_configure(struct snd_usb_audio *chip, 21 struct snd_usb_endpoint *ep); 22 void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep); 23 24 bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip, 25 struct snd_usb_endpoint *ep, 26 const struct audioformat *fp, 27 const struct snd_pcm_hw_params *params); 28 29 void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip, 30 struct snd_usb_endpoint *data_ep, 31 struct snd_usb_endpoint *sync_ep); 32 void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep, 33 void (*prepare)(struct snd_usb_substream *subs, 34 struct urb *urb), 35 void (*retire)(struct snd_usb_substream *subs, 36 struct urb *urb), 37 struct snd_usb_substream *data_subs); 38 39 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep); 40 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep); 41 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); 42 void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep); 43 int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep); 44 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep); 45 void snd_usb_endpoint_free(struct snd_usb_endpoint *ep); 46 47 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep); 48 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep, 49 struct snd_urb_ctx *ctx, int idx); 50 51 #endif /* __USBAUDIO_ENDPOINT_H */ 52