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android_kernel_...
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sound
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usb
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endpoint.h

endpoint.h 2.3 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef __USBAUDIO_ENDPOINT_H
    3. 

  3. #define __USBAUDIO_ENDPOINT_H
    4. 

  4. 

  5. #define SND_USB_ENDPOINT_TYPE_DATA     0
    6. 

  6. #define SND_USB_ENDPOINT_TYPE_SYNC     1
    7. 

  7. 

  8. struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip,
    9. 

  9. 					      int ep_num);
    10. 

  10. 

  11. int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type);
    12. 

  12. 

  13. struct snd_usb_endpoint *
    14. 

  14. snd_usb_endpoint_open(struct snd_usb_audio *chip,
    15. 

  15. 		      const struct audioformat *fp,
    16. 

  16. 		      const struct snd_pcm_hw_params *params,
    17. 

  17. 		      bool is_sync_ep,
    18. 

  18. 		      bool fixed_rate);
    19. 

  19. void snd_usb_endpoint_close(struct snd_usb_audio *chip,
    20. 

  20. 			    struct snd_usb_endpoint *ep);
    21. 

  21. int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
    22. 

  22. 				struct snd_usb_endpoint *ep);
    23. 

  23. int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
    24. 

  24. 			     struct snd_usb_endpoint *ep);
    25. 

  25. int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock);
    26. 

  26. 

  27. bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,
    28. 

  28. 				 struct snd_usb_endpoint *ep,
    29. 

  29. 				 const struct audioformat *fp,
    30. 

  30. 				 const struct snd_pcm_hw_params *params);
    31. 

  31. 

  32. void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,
    33. 

  33. 			       struct snd_usb_endpoint *data_ep,
    34. 

  34. 			       struct snd_usb_endpoint *sync_ep);
    35. 

  35. void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep,
    36. 

  36. 				   int (*prepare)(struct snd_usb_substream *subs,
    37. 

  37. 						  struct urb *urb,
    38. 

  38. 						  bool in_stream_lock),
    39. 

  39. 				   void (*retire)(struct snd_usb_substream *subs,
    40. 

  40. 						  struct urb *urb),
    41. 

  41. 				   struct snd_usb_substream *data_subs);
    42. 

  42. 

  43. int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
    44. 

  44. void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool keep_pending);
    45. 

  45. void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
    46. 

  46. void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
    47. 

  47. int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
    48. 

  48. void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
    49. 

  49. void snd_usb_endpoint_free_all(struct snd_usb_audio *chip);
    50. 

  50. 

  51. int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
    52. 

  52. int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
    53. 

  53. 				      struct snd_urb_ctx *ctx, int idx,
    54. 

  54. 				      unsigned int avail);
    55. 

  55. int snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep,
    56. 

  56. 				      bool in_stream_lock);
    57. 

  57. 

  58. #endif /* __USBAUDIO_ENDPOINT_H */
    59.