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android_kernel_...
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asoc
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codecs
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wcd937x
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wcd937x-mbhc.h

wcd937x-mbhc.h 2.1 KB
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  1. /* Copyright (c) 2018, The Linux Foundation. All rights reserved.
    2. 

  2.  *
    3. 

  3.  * This program is free software; you can redistribute it and/or modify
    4. 

  4.  * it under the terms of the GNU General Public License version 2 and
    5. 

  5.  * only version 2 as published by the Free Software Foundation.
    6. 

  6.  *
    7. 

  7.  * This program is distributed in the hope that it will be useful,
    8. 

  8.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    9. 

  9.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    10. 

  10.  * GNU General Public License for more details.
    11. 

  11.  */
    12. 

  12. #ifndef __WCD937X_MBHC_H__
    13. 

  13. #define __WCD937X_MBHC_H__
    14. 

  14. #include "../wcd-mbhc-v2.h"
    15. 

  15. 

  16. struct wcd937x_mbhc {
    17. 

  17. 	struct wcd_mbhc wcd_mbhc;
    18. 

  18. 	struct blocking_notifier_head notifier;
    19. 

  19. 	struct fw_info *fw_data;
    20. 

  20. 	bool mbhc_started;
    21. 

  21. };
    22. 

  22. 

  23. #if IS_ENABLED(CONFIG_SND_SOC_WCD937X)
    24. 

  24. extern int wcd937x_mbhc_init(struct wcd937x_mbhc **mbhc,
    25. 

  25. 			   struct snd_soc_codec *codec,
    26. 

  26. 			   struct fw_info *fw_data);
    27. 

  27. extern void wcd937x_mbhc_hs_detect_exit(struct snd_soc_codec *codec);
    28. 

  28. extern int wcd937x_mbhc_hs_detect(struct snd_soc_codec *codec,
    29. 

  29. 				struct wcd_mbhc_config *mbhc_cfg);
    30. 

  30. extern void wcd937x_mbhc_deinit(struct snd_soc_codec *codec);
    31. 

  31. extern int wcd937x_mbhc_post_ssr_init(struct wcd937x_mbhc *mbhc,
    32. 

  32. 				    struct snd_soc_codec *codec);
    33. 

  33. extern int wcd937x_mbhc_get_impedance(struct wcd937x_mbhc *wcd937x_mbhc,
    34. 

  34. 				    uint32_t *zl, uint32_t *zr);
    35. 

  35. #else
    36. 

  36. static inline int wcd937x_mbhc_init(struct wcd937x_mbhc **mbhc,
    37. 

  37. 				  struct snd_soc_codec *codec,
    38. 

  38. 				  struct fw_info *fw_data)
    39. 

  39. {
    40. 

  40. 	return 0;
    41. 

  41. }
    42. 

  42. static inline void wcd937x_mbhc_hs_detect_exit(struct snd_soc_codec *codec)
    43. 

  43. {
    44. 

  44. }
    45. 

  45. static inline int wcd937x_mbhc_hs_detect(struct snd_soc_codec *codec,
    46. 

  46. 				       struct wcd_mbhc_config *mbhc_cfg)
    47. 

  47. {
    48. 

  48. 		return 0;
    49. 

  49. }
    50. 

  50. static inline void wcd937x_mbhc_deinit(struct snd_soc_codec *codec)
    51. 

  51. {
    52. 

  52. }
    53. 

  53. static inline int wcd937x_mbhc_post_ssr_init(struct wcd937x_mbhc *mbhc,
    54. 

  54. 					   struct snd_soc_codec *codec)
    55. 

  55. {
    56. 

  56. 	return 0;
    57. 

  57. }
    58. 

  58. 

  59. static inline int wcd937x_mbhc_get_impedance(struct wcd937x_mbhc *wcd937x_mbhc,
    60. 

  60. 					   uint32_t *zl, uint32_t *zr)
    61. 

  61. {
    62. 

  62. 	if (zl)
    63. 

  63. 		*zl = 0;
    64. 

  64. 	if (zr)
    65. 

  65. 		*zr = 0;
    66. 

  66. 	return -EINVAL;
    67. 

  67. }
    68. 

  68. #endif
    69. 

  69. 

  70. #endif /* __WCD937X_MBHC_H__ */
    71.