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kernel_xiaom...
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drivers
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pinctrl
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mediatek
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mtk-eint.h

mtk-eint.h 2.4 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. /*
    3. 

  3.  * Copyright (C) 2014-2018 MediaTek Inc.
    4. 

  4.  *
    5. 

  5.  * Author: Maoguang Meng <maoguang.meng@mediatek.com>
    6. 

  6.  *	   Sean Wang <sean.wang@mediatek.com>
    7. 

  7.  *
    8. 

  8.  */
    9. 

  9. #ifndef __MTK_EINT_H
    10. 

  10. #define __MTK_EINT_H
    11. 

  11. 

  12. #include <linux/irqdomain.h>
    13. 

  13. 

  14. struct mtk_eint_regs {
    15. 

  15. 	unsigned int	stat;
    16. 

  16. 	unsigned int	ack;
    17. 

  17. 	unsigned int	mask;
    18. 

  18. 	unsigned int	mask_set;
    19. 

  19. 	unsigned int	mask_clr;
    20. 

  20. 	unsigned int	sens;
    21. 

  21. 	unsigned int	sens_set;
    22. 

  22. 	unsigned int	sens_clr;
    23. 

  23. 	unsigned int	soft;
    24. 

  24. 	unsigned int	soft_set;
    25. 

  25. 	unsigned int	soft_clr;
    26. 

  26. 	unsigned int	pol;
    27. 

  27. 	unsigned int	pol_set;
    28. 

  28. 	unsigned int	pol_clr;
    29. 

  29. 	unsigned int	dom_en;
    30. 

  30. 	unsigned int	dbnc_ctrl;
    31. 

  31. 	unsigned int	dbnc_set;
    32. 

  32. 	unsigned int	dbnc_clr;
    33. 

  33. };
    34. 

  34. 

  35. struct mtk_eint_hw {
    36. 

  36. 	u8		port_mask;
    37. 

  37. 	u8		ports;
    38. 

  38. 	unsigned int	ap_num;
    39. 

  39. 	unsigned int	db_cnt;
    40. 

  40. };
    41. 

  41. 

  42. struct mtk_eint;
    43. 

  43. 

  44. struct mtk_eint_xt {
    45. 

  45. 	int (*get_gpio_n)(void *data, unsigned long eint_n,
    46. 

  46. 			  unsigned int *gpio_n,
    47. 

  47. 			  struct gpio_chip **gpio_chip);
    48. 

  48. 	int (*get_gpio_state)(void *data, unsigned long eint_n);
    49. 

  49. 	int (*set_gpio_as_eint)(void *data, unsigned long eint_n);
    50. 

  50. };
    51. 

  51. 

  52. struct mtk_eint {
    53. 

  53. 	struct device *dev;
    54. 

  54. 	void __iomem *base;
    55. 

  55. 	struct irq_domain *domain;
    56. 

  56. 	int irq;
    57. 

  57. 

  58. 	int *dual_edge;
    59. 

  59. 	u32 *wake_mask;
    60. 

  60. 	u32 *cur_mask;
    61. 

  61. 

  62. 	/* Used to fit into various EINT device */
    63. 

  63. 	const struct mtk_eint_hw *hw;
    64. 

  64. 	const struct mtk_eint_regs *regs;
    65. 

  65. 

  66. 	/* Used to fit into various pinctrl device */
    67. 

  67. 	void *pctl;
    68. 

  68. 	const struct mtk_eint_xt *gpio_xlate;
    69. 

  69. 

  70. 	/* Used to support SW debounce */
    71. 

  71. 	struct timer_list *eint_timers;
    72. 

  72. 	int *eint_sw_debounce_en;
    73. 

  73. 	u32 *eint_sw_debounce;
    74. 

  74. };
    75. 

  75. 

  76. #if IS_ENABLED(CONFIG_EINT_MTK)
    77. 

  77. int mtk_eint_do_init(struct mtk_eint *eint);
    78. 

  78. int mtk_eint_do_suspend(struct mtk_eint *eint);
    79. 

  79. int mtk_eint_do_resume(struct mtk_eint *eint);
    80. 

  80. int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
    81. 

  81. 			  unsigned int debounce);
    82. 

  82. int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n);
    83. 

  83. 

  84. #else
    85. 

  85. static inline int mtk_eint_do_init(struct mtk_eint *eint)
    86. 

  86. {
    87. 

  87. 	return -EOPNOTSUPP;
    88. 

  88. }
    89. 

  89. 

  90. static inline int mtk_eint_do_suspend(struct mtk_eint *eint)
    91. 

  91. {
    92. 

  92. 	return -EOPNOTSUPP;
    93. 

  93. }
    94. 

  94. 

  95. static inline int mtk_eint_do_resume(struct mtk_eint *eint)
    96. 

  96. {
    97. 

  97. 	return -EOPNOTSUPP;
    98. 

  98. }
    99. 

  99. 

  100. static inline int mtk_eint_set_debounce(struct mtk_eint *eint,
    101. 

  101. 	unsigned long eint_n, unsigned int debounce)
    102. 

  102. {
    103. 

  103. 	return -EOPNOTSUPP;
    104. 

  104. }
    105. 

  105. 

  106. static inline int mtk_eint_find_irq(struct mtk_eint *eint,
    107. 

  107. 	unsigned long eint_n)
    108. 

  108. {
    109. 

  109. 	return -EOPNOTSUPP;
    110. 

  110. }
    111. 

  111. #endif
    112. 

  112. #endif /* __MTK_EINT_H */
    113. 

  113.