162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __USB_STREAM_H 362306a36Sopenharmony_ci#define __USB_STREAM_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <uapi/sound/usb_stream.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#define USB_STREAM_NURBS 4 862306a36Sopenharmony_ci#define USB_STREAM_URBDEPTH 4 962306a36Sopenharmony_ci 1062306a36Sopenharmony_cistruct usb_stream_kernel { 1162306a36Sopenharmony_ci struct usb_stream *s; 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci void *write_page; 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci unsigned int n_o_ps; 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci struct urb *inurb[USB_STREAM_NURBS]; 1862306a36Sopenharmony_ci struct urb *idle_inurb; 1962306a36Sopenharmony_ci struct urb *completed_inurb; 2062306a36Sopenharmony_ci struct urb *outurb[USB_STREAM_NURBS]; 2162306a36Sopenharmony_ci struct urb *idle_outurb; 2262306a36Sopenharmony_ci struct urb *completed_outurb; 2362306a36Sopenharmony_ci struct urb *i_urb; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci int iso_frame_balance; 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci wait_queue_head_t sleep; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci unsigned int out_phase; 3062306a36Sopenharmony_ci unsigned int out_phase_peeked; 3162306a36Sopenharmony_ci unsigned int freqn; 3262306a36Sopenharmony_ci}; 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistruct usb_stream *usb_stream_new(struct usb_stream_kernel *sk, 3562306a36Sopenharmony_ci struct usb_device *dev, 3662306a36Sopenharmony_ci unsigned int in_endpoint, 3762306a36Sopenharmony_ci unsigned int out_endpoint, 3862306a36Sopenharmony_ci unsigned int sample_rate, 3962306a36Sopenharmony_ci unsigned int use_packsize, 4062306a36Sopenharmony_ci unsigned int period_frames, 4162306a36Sopenharmony_ci unsigned int frame_size); 4262306a36Sopenharmony_civoid usb_stream_free(struct usb_stream_kernel *sk); 4362306a36Sopenharmony_ciint usb_stream_start(struct usb_stream_kernel *sk); 4462306a36Sopenharmony_civoid usb_stream_stop(struct usb_stream_kernel *sk); 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_ci#endif /* __USB_STREAM_H */ 47