diff options
Diffstat (limited to 'kernel/sound/usb/endpoint.h')
| -rw-r--r-- | kernel/sound/usb/endpoint.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/sound/usb/endpoint.h b/kernel/sound/usb/endpoint.h new file mode 100644 index 000000000..6428392d8 --- /dev/null +++ b/kernel/sound/usb/endpoint.h @@ -0,0 +1,36 @@ +#ifndef __USBAUDIO_ENDPOINT_H +#define __USBAUDIO_ENDPOINT_H + +#define SND_USB_ENDPOINT_TYPE_DATA 0 +#define SND_USB_ENDPOINT_TYPE_SYNC 1 + +struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, + struct usb_host_interface *alts, + int ep_num, int direction, int type); + +int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, + unsigned int period_frames, + unsigned int buffer_periods, + unsigned int rate, + struct audioformat *fmt, + struct snd_usb_endpoint *sync_ep); + +int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep); +void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep); +void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); +int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep); +void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep); +void snd_usb_endpoint_release(struct snd_usb_endpoint *ep); +void snd_usb_endpoint_free(struct snd_usb_endpoint *ep); + +int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep); +int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep); + +void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, + struct snd_usb_endpoint *sender, + const struct urb *urb); + +#endif /* __USBAUDIO_ENDPOINT_H */ |