lpass-ipq806x.c 3.0 KB

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  1. /*
  2. * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
  3. *
  4. * This program is free software; you can redistribute it and/or modify
  5. * it under the terms of the GNU General Public License version 2 and
  6. * only version 2 as published by the Free Software Foundation.
  7. *
  8. * This program is distributed in the hope that it will be useful,
  9. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11. * GNU General Public License for more details.
  12. *
  13. * lpass-ipq806x.c -- ALSA SoC CPU DAI driver for QTi LPASS
  14. * Splited out the IPQ8064 soc specific from lpass-cpu.c
  15. */
  16. #include <linux/clk.h>
  17. #include <linux/device.h>
  18. #include <linux/err.h>
  19. #include <linux/kernel.h>
  20. #include <linux/module.h>
  21. #include <linux/of.h>
  22. #include <linux/platform_device.h>
  23. #include <sound/pcm.h>
  24. #include <sound/soc.h>
  25. #include <sound/soc-dai.h>
  26. #include "lpass-lpaif-reg.h"
  27. #include "lpass.h"
  28. enum lpaif_i2s_ports {
  29. IPQ806X_LPAIF_I2S_PORT_CODEC_SPK,
  30. IPQ806X_LPAIF_I2S_PORT_CODEC_MIC,
  31. IPQ806X_LPAIF_I2S_PORT_SEC_SPK,
  32. IPQ806X_LPAIF_I2S_PORT_SEC_MIC,
  33. IPQ806X_LPAIF_I2S_PORT_MI2S,
  34. };
  35. enum lpaif_dma_channels {
  36. IPQ806X_LPAIF_RDMA_CHAN_MI2S,
  37. IPQ806X_LPAIF_RDMA_CHAN_PCM0,
  38. IPQ806X_LPAIF_RDMA_CHAN_PCM1,
  39. };
  40. static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = {
  41. .id = IPQ806X_LPAIF_I2S_PORT_MI2S,
  42. .playback = {
  43. .stream_name = "lpass-cpu-playback",
  44. .formats = SNDRV_PCM_FMTBIT_S16 |
  45. SNDRV_PCM_FMTBIT_S24 |
  46. SNDRV_PCM_FMTBIT_S32,
  47. .rates = SNDRV_PCM_RATE_8000 |
  48. SNDRV_PCM_RATE_16000 |
  49. SNDRV_PCM_RATE_32000 |
  50. SNDRV_PCM_RATE_48000 |
  51. SNDRV_PCM_RATE_96000,
  52. .rate_min = 8000,
  53. .rate_max = 96000,
  54. .channels_min = 1,
  55. .channels_max = 8,
  56. },
  57. .probe = &asoc_qcom_lpass_cpu_dai_probe,
  58. .ops = &asoc_qcom_lpass_cpu_dai_ops,
  59. };
  60. static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata)
  61. {
  62. return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
  63. }
  64. static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
  65. {
  66. return 0;
  67. }
  68. static struct lpass_variant ipq806x_data = {
  69. .i2sctrl_reg_base = 0x0010,
  70. .i2sctrl_reg_stride = 0x04,
  71. .i2s_ports = 5,
  72. .irq_reg_base = 0x3000,
  73. .irq_reg_stride = 0x1000,
  74. .irq_ports = 3,
  75. .rdma_reg_base = 0x6000,
  76. .rdma_reg_stride = 0x1000,
  77. .rdma_channels = 4,
  78. .dai_driver = &ipq806x_lpass_cpu_dai_driver,
  79. .num_dai = 1,
  80. .alloc_dma_channel = ipq806x_lpass_alloc_dma_channel,
  81. .free_dma_channel = ipq806x_lpass_free_dma_channel,
  82. };
  83. static const struct of_device_id ipq806x_lpass_cpu_device_id[] = {
  84. { .compatible = "qcom,lpass-cpu", .data = &ipq806x_data },
  85. {}
  86. };
  87. MODULE_DEVICE_TABLE(of, ipq806x_lpass_cpu_device_id);
  88. static struct platform_driver ipq806x_lpass_cpu_platform_driver = {
  89. .driver = {
  90. .name = "lpass-cpu",
  91. .of_match_table = of_match_ptr(ipq806x_lpass_cpu_device_id),
  92. },
  93. .probe = asoc_qcom_lpass_cpu_platform_probe,
  94. .remove = asoc_qcom_lpass_cpu_platform_remove,
  95. };
  96. module_platform_driver(ipq806x_lpass_cpu_platform_driver);
  97. MODULE_DESCRIPTION("QTi LPASS CPU Driver");
  98. MODULE_LICENSE("GPL v2");