mtk-eint.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2/*
  3 * Copyright (C) 2014-2025 MediaTek Inc.
  4 *
  5 * Author: Maoguang Meng <maoguang.meng@mediatek.com>
  6 *	   Sean Wang <sean.wang@mediatek.com>
  7 *	   Hao Chang <ot_chhao.chang@mediatek.com>
  8 *	   Qingliang Li <qingliang.li@mediatek.com>
  9 */
 10#ifndef __MTK_EINT_H
 11#define __MTK_EINT_H
 12
 13#include <linux/irqdomain.h>
 14
 15struct mtk_eint_regs {
 16	unsigned int	stat;
 17	unsigned int	ack;
 18	unsigned int	mask;
 19	unsigned int	mask_set;
 20	unsigned int	mask_clr;
 21	unsigned int	sens;
 22	unsigned int	sens_set;
 23	unsigned int	sens_clr;
 24	unsigned int	soft;
 25	unsigned int	soft_set;
 26	unsigned int	soft_clr;
 27	unsigned int	pol;
 28	unsigned int	pol_set;
 29	unsigned int	pol_clr;
 30	unsigned int	dom_en;
 31	unsigned int	dbnc_ctrl;
 32	unsigned int	dbnc_set;
 33	unsigned int	dbnc_clr;
 34};
 35
 36struct mtk_eint_hw {
 37	u8		port_mask;
 38	u8		ports;
 39	unsigned int	ap_num;
 40	unsigned int	db_cnt;
 41	const unsigned int *db_time;
 42};
 43
 44struct mtk_eint_pin {
 45	u16 number;
 46	u8 instance;
 47	u8 index;
 48	bool debounce;
 49	bool dual_edge;
 50};
 51
 52extern const unsigned int debounce_time_mt2701[];
 53extern const unsigned int debounce_time_mt6765[];
 54extern const unsigned int debounce_time_mt6795[];
 55extern const unsigned int debounce_time_mt6878[];
 56
 57struct mtk_eint;
 58
 59struct mtk_eint_xt {
 60	int (*get_gpio_n)(void *data, unsigned long eint_n,
 61			  unsigned int *gpio_n,
 62			  struct gpio_chip **gpio_chip);
 63	int (*get_gpio_state)(void *data, unsigned long eint_n);
 64	int (*set_gpio_as_eint)(void *data, unsigned long eint_n);
 65};
 66
 67struct mtk_eint {
 68	struct device *dev;
 69	void __iomem **base;
 70	int nbase;
 71	u16 *base_pin_num;
 72	struct irq_domain *domain;
 73	int irq;
 74
 75	int *dual_edge;
 76	u16 **pin_list;
 77	u32 **wake_mask;
 78	u32 **cur_mask;
 79
 80	/* Used to fit into various EINT device */
 81	const struct mtk_eint_hw *hw;
 82	const struct mtk_eint_regs *regs;
 83	struct mtk_eint_pin *pins;
 84	u16 num_db_time;
 85
 86	/* Used to fit into various pinctrl device */
 87	void *pctl;
 88	const struct mtk_eint_xt *gpio_xlate;
 89};
 90
 91#if IS_ENABLED(CONFIG_EINT_MTK)
 92int mtk_eint_do_init(struct mtk_eint *eint, struct mtk_eint_pin *eint_pin);
 93int mtk_eint_do_suspend(struct mtk_eint *eint);
 94int mtk_eint_do_resume(struct mtk_eint *eint);
 95int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
 96			  unsigned int debounce);
 97int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n);
 98
 99#else
100static inline int mtk_eint_do_init(struct mtk_eint *eint,
101				   struct mtk_eint_pin *eint_pin)
102{
103	return -EOPNOTSUPP;
104}
105
106static inline int mtk_eint_do_suspend(struct mtk_eint *eint)
107{
108	return -EOPNOTSUPP;
109}
110
111static inline int mtk_eint_do_resume(struct mtk_eint *eint)
112{
113	return -EOPNOTSUPP;
114}
115
116static inline int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
117			  unsigned int debounce)
118{
119	return -EOPNOTSUPP;
120}
121
122static inline int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n)
123{
124	return -EOPNOTSUPP;
125}
126#endif
127#endif /* __MTK_EINT_H */