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u-boot-2017.01+gitAUTOINC+340fb36f04-g340fb36f04
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include
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pwm.h

pwm.h 1.8 KB
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  1. /*
    2. 

  2.  * header file for pwm driver.
    3. 

  3.  *
    4. 

  4.  * Copyright 2016 Google Inc.
    5. 

  5.  * Copyright (c) 2011 samsung electronics
    6. 

  6.  * Donghwa Lee <dh09.lee@samsung.com>
    7. 

  7.  *
    8. 

  8.  * SPDX-License-Identifier:	GPL-2.0+
    9. 

  9.  */
    10. 

  10. 

  11. #ifndef _pwm_h_
    12. 

  12. #define _pwm_h_
    13. 

  13. 

  14. /* struct pwm_ops: Operations for the PWM uclass */
    15. 

  15. struct pwm_ops {
    16. 

  16. 	/**
    17. 

  17. 	 * set_config() - Set the PWM configuration
    18. 

  18. 	 *
    19. 

  19. 	 * @dev:	PWM device to update
    20. 

  20. 	 * @channel:	PWM channel to update
    21. 

  21. 	 * @period_ns:	PWM period in nanoseconds
    22. 

  22. 	 * @duty_ns:	PWM duty period in nanoseconds
    23. 

  23. 	 * @return 0 if OK, -ve on error
    24. 

  24. 	 */
    25. 

  25. 	int (*set_config)(struct udevice *dev, uint channel, uint period_ns,
    26. 

  26. 			  uint duty_ns);
    27. 

  27. 

  28. 	/**
    29. 

  29. 	 * set_enable() - Enable or disable the PWM
    30. 

  30. 	 *
    31. 

  31. 	 * @dev:	PWM device to update
    32. 

  32. 	 * @channel:	PWM channel to update
    33. 

  33. 	 * @enable:	true to enable, false to disable
    34. 

  34. 	 * @return 0 if OK, -ve on error
    35. 

  35. 	 */
    36. 

  36. 	int (*set_enable)(struct udevice *dev, uint channel, bool enable);
    37. 

  37. };
    38. 

  38. 

  39. #define pwm_get_ops(dev)	((struct pwm_ops *)(dev)->driver->ops)
    40. 

  40. 

  41. /**
    42. 

  42.  * pwm_set_config() - Set the PWM configuration
    43. 

  43.  *
    44. 

  44.  * @dev:	PWM device to update
    45. 

  45.  * @channel:	PWM channel to update
    46. 

  46.  * @period_ns:	PWM period in nanoseconds
    47. 

  47.  * @duty_ns:	PWM duty period in nanoseconds
    48. 

  48.  * @return 0 if OK, -ve on error
    49. 

  49.  */
    50. 

  50. int pwm_set_config(struct udevice *dev, uint channel, uint period_ns,
    51. 

  51. 		   uint duty_ns);
    52. 

  52. 

  53. /**
    54. 

  54.  * pwm_set_enable() - Enable or disable the PWM
    55. 

  55.  *
    56. 

  56.  * @dev:	PWM device to update
    57. 

  57.  * @channel:	PWM channel to update
    58. 

  58.  * @enable:	true to enable, false to disable
    59. 

  59.  * @return 0 if OK, -ve on error
    60. 

  60.  */
    61. 

  61. int pwm_set_enable(struct udevice *dev, uint channel, bool enable);
    62. 

  62. 

  63. /* Legacy interface */
    64. 

  64. #ifndef CONFIG_DM_PWM
    65. 

  65. int	pwm_init		(int pwm_id, int div, int invert);
    66. 

  66. int	pwm_config		(int pwm_id, int duty_ns, int period_ns);
    67. 

  67. int	pwm_enable		(int pwm_id);
    68. 

  68. void	pwm_disable		(int pwm_id);
    69. 

  69. #endif
    70. 

  70. 

  71. #endif /* _pwm_h_ */
    72.