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 */ |
113 | |