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imx-pcm.h

imx-pcm.h 1.8 KB
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  1. /*
    2. 

  2.  * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
    3. 

  3.  *
    4. 

  4.  * This code is based on code copyrighted by Freescale,
    5. 

  5.  * Liam Girdwood, Javier Martin and probably others.
    6. 

  6.  *
    7. 

  7.  * This program is free software; you can redistribute  it and/or modify it
    8. 

  8.  * under  the terms of  the GNU General  Public License as published by the
    9. 

  9.  * Free Software Foundation;  either version 2 of the  License, or (at your
    10. 

  10.  * option) any later version.
    11. 

  11.  */
    12. 

  12. 

  13. #ifndef _IMX_PCM_H
    14. 

  14. #define _IMX_PCM_H
    15. 

  15. 

  16. #include <linux/platform_data/dma-imx.h>
    17. 

  17. 

  18. /*
    19. 

  19.  * Do not change this as the FIQ handler depends on this size
    20. 

  20.  */
    21. 

  21. #define IMX_SSI_DMABUF_SIZE	(64 * 1024)
    22. 

  22. 

  23. static inline void
    24. 

  24. imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data,
    25. 

  25. 	int dma, enum sdma_peripheral_type peripheral_type)
    26. 

  26. {
    27. 

  27. 	dma_data->dma_request = dma;
    28. 

  28. 	dma_data->priority = DMA_PRIO_HIGH;
    29. 

  29. 	dma_data->peripheral_type = peripheral_type;
    30. 

  30. }
    31. 

  31. 

  32. struct imx_pcm_fiq_params {
    33. 

  33. 	int irq;
    34. 

  34. 	void __iomem *base;
    35. 

  35. 

  36. 	/* Pointer to original ssi driver to setup tx rx sizes */
    37. 

  37. 	struct snd_dmaengine_dai_dma_data *dma_params_rx;
    38. 

  38. 	struct snd_dmaengine_dai_dma_data *dma_params_tx;
    39. 

  39. };
    40. 

  40. 

  41. #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
    42. 

  42. int imx_pcm_dma_init(struct platform_device *pdev);
    43. 

  43. void imx_pcm_dma_exit(struct platform_device *pdev);
    44. 

  44. #else
    45. 

  45. static inline int imx_pcm_dma_init(struct platform_device *pdev)
    46. 

  46. {
    47. 

  47. 	return -ENODEV;
    48. 

  48. }
    49. 

  49. 

  50. static inline void imx_pcm_dma_exit(struct platform_device *pdev)
    51. 

  51. {
    52. 

  52. }
    53. 

  53. #endif
    54. 

  54. 

  55. #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)
    56. 

  56. int imx_pcm_fiq_init(struct platform_device *pdev,
    57. 

  57. 		struct imx_pcm_fiq_params *params);
    58. 

  58. void imx_pcm_fiq_exit(struct platform_device *pdev);
    59. 

  59. #else
    60. 

  60. static inline int imx_pcm_fiq_init(struct platform_device *pdev,
    61. 

  61. 		struct imx_pcm_fiq_params *params)
    62. 

  62. {
    63. 

  63. 	return -ENODEV;
    64. 

  64. }
    65. 

  65. 

  66. static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
    67. 

  67. {
    68. 

  68. }
    69. 

  69. #endif
    70. 

  70. 

  71. #endif /* _IMX_PCM_H */
    72.