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android_kernel_samsung_sm8650_ksu
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android_kernel_...
/
drivers
/
i2c
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algos
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i2c-algo-pcf.h

i2c-algo-pcf.h 2.2 KB
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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
    2. 

  2. /* -------------------------------------------------------------------- */
    3. 

  3. /* i2c-pcf8584.h: PCF 8584 global defines				*/
    4. 

  4. /* -------------------------------------------------------------------- */
    5. 

  5. /*   Copyright (C) 1996 Simon G. Vogl
    6. 

  6.                    1999 Hans Berglund
    7. 

  7. 

  8.  */
    9. 

  9. /* --------------------------------------------------------------------	*/
    10. 

  10. 

  11. /* With some changes from Frodo Looijaard <[email protected]> */
    12. 

  12. 

  13. #ifndef I2C_PCF8584_H
    14. 

  14. #define I2C_PCF8584_H 1
    15. 

  15. 

  16. /* ----- Control register bits ----------------------------------------	*/
    17. 

  17. #define I2C_PCF_PIN	0x80
    18. 

  18. #define I2C_PCF_ESO	0x40
    19. 

  19. #define I2C_PCF_ES1	0x20
    20. 

  20. #define I2C_PCF_ES2	0x10
    21. 

  21. #define I2C_PCF_ENI	0x08
    22. 

  22. #define I2C_PCF_STA	0x04
    23. 

  23. #define I2C_PCF_STO	0x02
    24. 

  24. #define I2C_PCF_ACK	0x01
    25. 

  25. 

  26. #define I2C_PCF_START    (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
    27. 

  27. #define I2C_PCF_STOP     (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK)
    28. 

  28. #define I2C_PCF_REPSTART (              I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
    29. 

  29. #define I2C_PCF_IDLE     (I2C_PCF_PIN | I2C_PCF_ESO               | I2C_PCF_ACK)
    30. 

  30. 

  31. /* ----- Status register bits -----------------------------------------	*/
    32. 

  32. /*#define I2C_PCF_PIN  0x80    as above*/
    33. 

  33. 

  34. #define I2C_PCF_INI 0x40   /* 1 if not initialized */
    35. 

  35. #define I2C_PCF_STS 0x20
    36. 

  36. #define I2C_PCF_BER 0x10
    37. 

  37. #define I2C_PCF_AD0 0x08
    38. 

  38. #define I2C_PCF_LRB 0x08
    39. 

  39. #define I2C_PCF_AAS 0x04
    40. 

  40. #define I2C_PCF_LAB 0x02
    41. 

  41. #define I2C_PCF_BB  0x01
    42. 

  42. 

  43. /* ----- Chip clock frequencies ---------------------------------------	*/
    44. 

  44. #define I2C_PCF_CLK3	0x00
    45. 

  45. #define I2C_PCF_CLK443	0x10
    46. 

  46. #define I2C_PCF_CLK6	0x14
    47. 

  47. #define I2C_PCF_CLK	0x18
    48. 

  48. #define I2C_PCF_CLK12	0x1c
    49. 

  49. 

  50. /* ----- transmission frequencies -------------------------------------	*/
    51. 

  51. #define I2C_PCF_TRNS90 0x00	/*  90 kHz */
    52. 

  52. #define I2C_PCF_TRNS45 0x01	/*  45 kHz */
    53. 

  53. #define I2C_PCF_TRNS11 0x02	/*  11 kHz */
    54. 

  54. #define I2C_PCF_TRNS15 0x03	/* 1.5 kHz */
    55. 

  55. 

  56. 

  57. /* ----- Access to internal registers according to ES1,ES2 ------------	*/
    58. 

  58. /* they are mapped to the data port ( a0 = 0 ) 				*/
    59. 

  59. /* available when ESO == 0 :						*/
    60. 

  60. 

  61. #define I2C_PCF_OWNADR	0
    62. 

  62. #define I2C_PCF_INTREG	I2C_PCF_ES2
    63. 

  63. #define I2C_PCF_CLKREG	I2C_PCF_ES1
    64. 

  64. 

  65. #endif /* I2C_PCF8584_H */
    66.