drivers/pinctrl/mediatek/mtk-eint.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2014-2018 MediaTek Inc.
   4  *
   5  * Author: Maoguang Meng <maoguang.meng@mediatek.com>
   6  *         Sean Wang <sean.wang@mediatek.com>
   7  *
   8  */
   9 #ifndef __MTK_EINT_H
  10 #define __MTK_EINT_H
  11
  12 #include <linux/irqdomain.h>
  13
  14 struct mtk_eint_regs {
  15         unsigned int    stat;
  16         unsigned int    ack;
  17         unsigned int    mask;
  18         unsigned int    mask_set;
  19         unsigned int    mask_clr;
  20         unsigned int    sens;
  21         unsigned int    sens_set;
  22         unsigned int    sens_clr;
  23         unsigned int    soft;
  24         unsigned int    soft_set;
  25         unsigned int    soft_clr;
  26         unsigned int    pol;
  27         unsigned int    pol_set;
  28         unsigned int    pol_clr;
  29         unsigned int    dom_en;
  30         unsigned int    dbnc_ctrl;
  31         unsigned int    dbnc_set;
  32         unsigned int    dbnc_clr;
  33 };
  34
  35 struct mtk_eint_hw {
  36         u8              port_mask;
  37         u8              ports;
  38         unsigned int    ap_num;
  39         unsigned int    db_cnt;
  40         const unsigned int *db_time;
  41 };
  42
  43 extern const unsigned int debounce_time_mt2701[];
  44 extern const unsigned int debounce_time_mt6765[];
  45 extern const unsigned int debounce_time_mt6795[];
  46
  47 struct mtk_eint;
  48
  49 struct mtk_eint_xt {
  50         int (*get_gpio_n)(void *data, unsigned long eint_n,
  51                           unsigned int *gpio_n,
  52                           struct gpio_chip **gpio_chip);
  53         int (*get_gpio_state)(void *data, unsigned long eint_n);
  54         int (*set_gpio_as_eint)(void *data, unsigned long eint_n);
  55 };
  56
  57 struct mtk_eint {
  58         struct device *dev;
  59         void __iomem *base;
  60         struct irq_domain *domain;
  61         int irq;
  62
  63         int *dual_edge;
  64         u32 *wake_mask;
  65         u32 *cur_mask;
  66
  67         /* Used to fit into various EINT device */
  68         const struct mtk_eint_hw *hw;
  69         const struct mtk_eint_regs *regs;
  70         u16 num_db_time;
  71
  72         /* Used to fit into various pinctrl device */
  73         void *pctl;
  74         const struct mtk_eint_xt *gpio_xlate;
  75 };
  76
  77 #if IS_ENABLED(CONFIG_EINT_MTK)
  78 int mtk_eint_do_init(struct mtk_eint *eint);
  79 int mtk_eint_do_suspend(struct mtk_eint *eint);
  80 int mtk_eint_do_resume(struct mtk_eint *eint);
  81 int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
  82                           unsigned int debounce);
  83 int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n);
  84
  85 #else
  86 static inline int mtk_eint_do_init(struct mtk_eint *eint)
  87 {
  88         return -EOPNOTSUPP;
  89 }
  90
  91 static inline int mtk_eint_do_suspend(struct mtk_eint *eint)
  92 {
  93         return -EOPNOTSUPP;
  94 }
  95
  96 static inline int mtk_eint_do_resume(struct mtk_eint *eint)
  97 {
  98         return -EOPNOTSUPP;
  99 }
 100
 101 static inline int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
 102                           unsigned int debounce)
 103 {
 104         return -EOPNOTSUPP;
 105 }
 106
 107 static inline int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n)
 108 {
 109         return -EOPNOTSUPP;
 110 }
 111 #endif
 112 #endif /* __MTK_EINT_H */