Kezdőlap Felfedezés Súgó
Regisztráció Bejelentkezés
RD_Software
/
ark1668ed-bsp
2
0
Másolás 0
Fájlok Problémák 0 Beolvasztási kérések 0 Wiki
Fa: fc47107f95
Branch-ok Tag-ek
ark1668ed-bsp
/
linux
/
sound
/
soc
/
fsl
/
lpc3xxx-pcm.c

lpc3xxx-pcm.c 2.0 KB
Előzmények Nyers

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172 
  1. // SPDX-License-Identifier: GPL-2.0-or-later
    2. 

  2. //
    3. 

  3. // Author: Kevin Wells <kevin.wells@nxp.com>
    4. 

  4. //
    5. 

  5. // Copyright (C) 2008 NXP Semiconductors
    6. 

  6. // Copyright 2023 Timesys Corporation <piotr.wojtaszczyk@timesys.com>
    7. 

  7. 

  8. #include <linux/module.h>
    9. 

  9. #include <linux/init.h>
    10. 

  10. #include <linux/platform_device.h>
    11. 

  11. #include <linux/slab.h>
    12. 

  12. #include <linux/dma-mapping.h>
    13. 

  13. #include <linux/amba/pl08x.h>
    14. 

  14. 

  15. #include <sound/core.h>
    16. 

  16. #include <sound/pcm.h>
    17. 

  17. #include <sound/pcm_params.h>
    18. 

  18. #include <sound/dmaengine_pcm.h>
    19. 

  19. #include <sound/soc.h>
    20. 

  20. 

  21. #include "lpc3xxx-i2s.h"
    22. 

  22. 

  23. #define STUB_FORMATS	(SNDRV_PCM_FMTBIT_S8 | \
    24. 

  24. 			SNDRV_PCM_FMTBIT_U8 | \
    25. 

  25. 			SNDRV_PCM_FMTBIT_S16_LE | \
    26. 

  26. 			SNDRV_PCM_FMTBIT_U16_LE | \
    27. 

  27. 			SNDRV_PCM_FMTBIT_S24_LE | \
    28. 

  28. 			SNDRV_PCM_FMTBIT_U24_LE | \
    29. 

  29. 			SNDRV_PCM_FMTBIT_S32_LE | \
    30. 

  30. 			SNDRV_PCM_FMTBIT_U32_LE | \
    31. 

  31. 			SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
    32. 

  32. 

  33. static const struct snd_pcm_hardware lpc3xxx_pcm_hardware = {
    34. 

  34. 	.info = (SNDRV_PCM_INFO_MMAP |
    35. 

  35. 		 SNDRV_PCM_INFO_MMAP_VALID |
    36. 

  36. 		 SNDRV_PCM_INFO_INTERLEAVED |
    37. 

  37. 		 SNDRV_PCM_INFO_BLOCK_TRANSFER |
    38. 

  38. 		 SNDRV_PCM_INFO_PAUSE |
    39. 

  39. 		 SNDRV_PCM_INFO_RESUME),
    40. 

  40. 	.formats = STUB_FORMATS,
    41. 

  41. 	.period_bytes_min = 128,
    42. 

  42. 	.period_bytes_max = 2048,
    43. 

  43. 	.periods_min = 2,
    44. 

  44. 	.periods_max = 1024,
    45. 

  45. 	.buffer_bytes_max = 128 * 1024
    46. 

  46. };
    47. 

  47. 

  48. static const struct snd_dmaengine_pcm_config lpc3xxx_dmaengine_pcm_config = {
    49. 

  49. 	.pcm_hardware = &lpc3xxx_pcm_hardware,
    50. 

  50. 	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
    51. 

  51. 	.compat_filter_fn = pl08x_filter_id,
    52. 

  52. 	.prealloc_buffer_size = 128 * 1024,
    53. 

  53. };
    54. 

  54. 

  55. static const struct snd_soc_component_driver lpc3xxx_soc_platform_driver = {
    56. 

  56. 	.name = "lpc32xx-pcm",
    57. 

  57. };
    58. 

  58. 

  59. int lpc3xxx_pcm_register(struct platform_device *pdev)
    60. 

  60. {
    61. 

  61. 	int ret;
    62. 

  62. 

  63. 	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, &lpc3xxx_dmaengine_pcm_config, 0);
    64. 

  64. 	if (ret) {
    65. 

  65. 		dev_err(&pdev->dev, "failed to register dmaengine: %d\n", ret);
    66. 

  66. 		return ret;
    67. 

  67. 	}
    68. 

  68. 

  69. 	return devm_snd_soc_register_component(&pdev->dev, &lpc3xxx_soc_platform_driver,
    70. 

  70. 					       NULL, 0);
    71. 

  71. }
    72. 

  72. EXPORT_SYMBOL(lpc3xxx_pcm_register);
    73.