fsl_asrc_common.h 2.8 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /*
  3. * Copyright 2019 NXP
  4. *
  5. */
  6. #ifndef _FSL_ASRC_COMMON_H
  7. #define _FSL_ASRC_COMMON_H
  8. /* directions */
  9. #define IN 0
  10. #define OUT 1
  11. enum asrc_pair_index {
  12. ASRC_INVALID_PAIR = -1,
  13. ASRC_PAIR_A = 0,
  14. ASRC_PAIR_B = 1,
  15. ASRC_PAIR_C = 2,
  16. ASRC_PAIR_D = 3,
  17. };
  18. #define PAIR_CTX_NUM 0x4
  19. /**
  20. * fsl_asrc_pair: ASRC Pair common data
  21. *
  22. * @asrc: pointer to its parent module
  23. * @error: error record
  24. * @index: pair index (ASRC_PAIR_A, ASRC_PAIR_B, ASRC_PAIR_C)
  25. * @channels: occupied channel number
  26. * @desc: input and output dma descriptors
  27. * @dma_chan: inputer and output DMA channels
  28. * @dma_data: private dma data
  29. * @pos: hardware pointer position
  30. * @req_dma_chan: flag to release dev_to_dev chan
  31. * @private: pair private area
  32. */
  33. struct fsl_asrc_pair {
  34. struct fsl_asrc *asrc;
  35. unsigned int error;
  36. enum asrc_pair_index index;
  37. unsigned int channels;
  38. struct dma_async_tx_descriptor *desc[2];
  39. struct dma_chan *dma_chan[2];
  40. struct imx_dma_data dma_data;
  41. unsigned int pos;
  42. bool req_dma_chan;
  43. void *private;
  44. };
  45. /**
  46. * fsl_asrc: ASRC common data
  47. *
  48. * @dma_params_rx: DMA parameters for receive channel
  49. * @dma_params_tx: DMA parameters for transmit channel
  50. * @pdev: platform device pointer
  51. * @regmap: regmap handler
  52. * @paddr: physical address to the base address of registers
  53. * @mem_clk: clock source to access register
  54. * @ipg_clk: clock source to drive peripheral
  55. * @spba_clk: SPBA clock (optional, depending on SoC design)
  56. * @lock: spin lock for resource protection
  57. * @pair: pair pointers
  58. * @channel_avail: non-occupied channel numbers
  59. * @asrc_rate: default sample rate for ASoC Back-Ends
  60. * @asrc_format: default sample format for ASoC Back-Ends
  61. * @use_edma: edma is used
  62. * @get_dma_channel: function pointer
  63. * @request_pair: function pointer
  64. * @release_pair: function pointer
  65. * @get_fifo_addr: function pointer
  66. * @pair_priv_size: size of pair private struct.
  67. * @private: private data structure
  68. */
  69. struct fsl_asrc {
  70. struct snd_dmaengine_dai_dma_data dma_params_rx;
  71. struct snd_dmaengine_dai_dma_data dma_params_tx;
  72. struct platform_device *pdev;
  73. struct regmap *regmap;
  74. unsigned long paddr;
  75. struct clk *mem_clk;
  76. struct clk *ipg_clk;
  77. struct clk *spba_clk;
  78. spinlock_t lock; /* spin lock for resource protection */
  79. struct fsl_asrc_pair *pair[PAIR_CTX_NUM];
  80. unsigned int channel_avail;
  81. int asrc_rate;
  82. snd_pcm_format_t asrc_format;
  83. bool use_edma;
  84. struct dma_chan *(*get_dma_channel)(struct fsl_asrc_pair *pair, bool dir);
  85. int (*request_pair)(int channels, struct fsl_asrc_pair *pair);
  86. void (*release_pair)(struct fsl_asrc_pair *pair);
  87. int (*get_fifo_addr)(u8 dir, enum asrc_pair_index index);
  88. size_t pair_priv_size;
  89. void *private;
  90. };
  91. #define DRV_NAME "fsl-asrc-dai"
  92. extern struct snd_soc_component_driver fsl_asrc_component;
  93. #endif /* _FSL_ASRC_COMMON_H */