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vidc.h

vidc.h 1.8 KB
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  1. /*
    2. 

  2.  *  linux/drivers/sound/vidc.h
    3. 

  3.  *
    4. 

  4.  *  Copyright (C) 1997 Russell King <rmk@arm.linux.org.uk>
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or modify
    7. 

  7.  * it under the terms of the GNU General Public License version 2 as
    8. 

  8.  * published by the Free Software Foundation.
    9. 

  9.  *
    10. 

  10.  *  VIDC sound function prototypes
    11. 

  11.  */
    12. 

  12. 

  13. /* vidc_fill.S */
    14. 

  14. 

  15. /*
    16. 

  16.  * Filler routines for different channels and sample sizes
    17. 

  17.  */
    18. 

  18. 

  19. extern unsigned long vidc_fill_1x8_u(unsigned long ibuf, unsigned long iend,
    20. 

  20. 				     unsigned long obuf, int mask);
    21. 

  21. extern unsigned long vidc_fill_2x8_u(unsigned long ibuf, unsigned long iend,
    22. 

  22. 				     unsigned long obuf, int mask);
    23. 

  23. extern unsigned long vidc_fill_1x8_s(unsigned long ibuf, unsigned long iend,
    24. 

  24. 				     unsigned long obuf, int mask);
    25. 

  25. extern unsigned long vidc_fill_2x8_s(unsigned long ibuf, unsigned long iend,
    26. 

  26. 				     unsigned long obuf, int mask);
    27. 

  27. extern unsigned long vidc_fill_1x16_s(unsigned long ibuf, unsigned long iend,
    28. 

  28. 				      unsigned long obuf, int mask);
    29. 

  29. extern unsigned long vidc_fill_2x16_s(unsigned long ibuf, unsigned long iend,
    30. 

  30. 				      unsigned long obuf, int mask);
    31. 

  31. 

  32. /*
    33. 

  33.  * DMA Interrupt handler
    34. 

  34.  */
    35. 

  35. 

  36. extern irqreturn_t vidc_sound_dma_irq(int irqnr, void *ref);
    37. 

  37. 

  38. /*
    39. 

  39.  * Filler routine pointer
    40. 

  40.  */
    41. 

  41. 

  42. extern unsigned long (*vidc_filler) (unsigned long ibuf, unsigned long iend,
    43. 

  43. 				     unsigned long obuf, int mask);
    44. 

  44. 

  45. /*
    46. 

  46.  * Virtual DMA buffer exhausted
    47. 

  47.  */
    48. 

  48. 

  49. extern irqreturn_t (*dma_interrupt) (void);
    50. 

  50. 

  51. /*
    52. 

  52.  * Virtual DMA buffer addresses
    53. 

  53.  */
    54. 

  54. 

  55. extern unsigned long dma_start, dma_count, dma_bufsize;
    56. 

  56. extern unsigned long dma_buf[2], dma_pbuf[2];
    57. 

  57. 

  58. /* vidc_synth.c */
    59. 

  59. 

  60. extern void     vidc_synth_init(struct address_info *hw_config);
    61. 

  61. extern void	vidc_synth_exit(struct address_info *hw_config);
    62. 

  62. extern int      vidc_synth_get_volume(void);
    63. 

  63. extern int      vidc_synth_set_volume(int vol);
    64. 

  64.