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kernel_xiaom...
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sound
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usb
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endpoint.h

endpoint.h 1.7 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_add_endpoint(struct snd_usb_audio *chip,
    9. 

  9. 					      struct usb_host_interface *alts,
    10. 

  10. 					      int ep_num, int direction, int type);
    11. 

  11. 

  12. int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
    13. 

  13. 				snd_pcm_format_t pcm_format,
    14. 

  14. 				unsigned int channels,
    15. 

  15. 				unsigned int period_bytes,
    16. 

  16. 				unsigned int period_frames,
    17. 

  17. 				unsigned int buffer_periods,
    18. 

  18. 				unsigned int rate,
    19. 

  19. 				struct audioformat *fmt,
    20. 

  20. 				struct snd_usb_endpoint *sync_ep);
    21. 

  21. 

  22. int  snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
    23. 

  23. void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
    24. 

  24. void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
    25. 

  25. int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
    26. 

  26. void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
    27. 

  27. void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
    28. 

  28. void snd_usb_endpoint_free(struct snd_usb_endpoint *ep);
    29. 

  29. 

  30. int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
    31. 

  31. int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
    32. 

  32. 

  33. void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
    34. 

  34. 			     struct snd_usb_endpoint *sender,
    35. 

  35. 			     const struct urb *urb);
    36. 

  36. 

  37. #define USB_AUDIO_DATA_OUT 0
    38. 

  38. #define USB_AUDIO_DATA_IN 1
    39. 

  39. #define USB_AUDIO_DATA_SYNC 2
    40. 

  40. 

  41. #ifdef CONFIG_MTK_UAC_POWER_SAVING
    42. 

  42. extern void *mtk_usb_alloc_sram(int id, size_t size, dma_addr_t *dma);
    43. 

  43. extern void mtk_usb_free_sram(int id);
    44. 

  44. #else
    45. 

  45. static inline void *mtk_usb_alloc_sram(int id, size_t size,
    46. 

  46. 	dma_addr_t *dma)
    47. 

  47. {
    48. 

  48. 	return NULL;
    49. 

  49. };
    50. 

  50. static inline void mtk_usb_free_sram(int id) {};
    51. 

  51. #endif
    52. 

  52. #endif /* __USBAUDIO_ENDPOINT_H */
    53. 

  53.