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pxa2xx-lib.h

pxa2xx-lib.h 2.3 KB
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  1. #ifndef PXA2XX_LIB_H
    2. 

  2. #define PXA2XX_LIB_H
    3. 

  3. 

  4. #include <linux/platform_device.h>
    5. 

  5. #include <sound/ac97_codec.h>
    6. 

  6. 

  7. /* PCM */
    8. 

  8. 

  9. struct pxa2xx_pcm_dma_params {
    10. 

  10. 	char *name;			/* stream identifier */
    11. 

  11. 	u32 dcmd;			/* DMA descriptor dcmd field */
    12. 

  12. 	volatile u32 *drcmr;		/* the DMA request channel to use */
    13. 

  13. 	u32 dev_addr;			/* device physical address for DMA */
    14. 

  14. };
    15. 

  15. 

  16. extern int __pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
    17. 

  17. 				struct snd_pcm_hw_params *params);
    18. 

  18. extern int __pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream);
    19. 

  19. extern int pxa2xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
    20. 

  20. extern snd_pcm_uframes_t pxa2xx_pcm_pointer(struct snd_pcm_substream *substream);
    21. 

  21. extern int __pxa2xx_pcm_prepare(struct snd_pcm_substream *substream);
    22. 

  22. extern void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id);
    23. 

  23. extern int __pxa2xx_pcm_open(struct snd_pcm_substream *substream);
    24. 

  24. extern int __pxa2xx_pcm_close(struct snd_pcm_substream *substream);
    25. 

  25. extern int pxa2xx_pcm_mmap(struct snd_pcm_substream *substream,
    26. 

  26. 	struct vm_area_struct *vma);
    27. 

  27. extern int pxa2xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream);
    28. 

  28. extern void pxa2xx_pcm_free_dma_buffers(struct snd_pcm *pcm);
    29. 

  29. 

  30. /* AC97 */
    31. 

  31. 

  32. extern unsigned short pxa2xx_ac97_read(struct snd_ac97 *ac97, unsigned short reg);
    33. 

  33. extern void pxa2xx_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val);
    34. 

  34. 

  35. extern bool pxa2xx_ac97_try_warm_reset(struct snd_ac97 *ac97);
    36. 

  36. extern bool pxa2xx_ac97_try_cold_reset(struct snd_ac97 *ac97);
    37. 

  37. extern void pxa2xx_ac97_finish_reset(struct snd_ac97 *ac97);
    38. 

  38. 

  39. extern int pxa2xx_ac97_hw_suspend(void);
    40. 

  40. extern int pxa2xx_ac97_hw_resume(void);
    41. 

  41. 

  42. extern int pxa2xx_ac97_hw_probe(struct platform_device *dev);
    43. 

  43. extern void pxa2xx_ac97_hw_remove(struct platform_device *dev);
    44. 

  44. 

  45. /* AC97 platform_data */
    46. 

  46. /**
    47. 

  47.  * struct pxa2xx_ac97_platform_data - pxa ac97 platform data
    48. 

  48.  * @reset_gpio: AC97 reset gpio (normally gpio113 or gpio95)
    49. 

  49.  *              a -1 value means no gpio will be used for reset
    50. 

  50.  *
    51. 

  51.  * Platform data should only be specified for pxa27x CPUs where a silicon bug
    52. 

  52.  * prevents correct operation of the reset line. If not specified, the default
    53. 

  53.  * behaviour is to consider gpio 113 as the AC97 reset line, which is the
    54. 

  54.  * default on most boards.
    55. 

  55.  */
    56. 

  56. struct pxa2xx_ac97_platform_data {
    57. 

  57. 	int reset_gpio;
    58. 

  58. };
    59. 

  59. 

  60. #endif
    61.