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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2014-2018 MediaTek Inc.
*
* Author: Maoguang Meng <maoguang.meng@mediatek.com>
* Sean Wang <sean.wang@mediatek.com>
*
*/
#ifndef __MTK_EINT_H
#define __MTK_EINT_H
#include <linux/irqdomain.h>
struct mtk_eint_regs {
unsigned int stat;
unsigned int ack;
unsigned int mask;
unsigned int mask_set;
unsigned int mask_clr;
unsigned int sens;
unsigned int sens_set;
unsigned int sens_clr;
unsigned int soft;
unsigned int soft_set;
unsigned int soft_clr;
unsigned int pol;
unsigned int pol_set;
unsigned int pol_clr;
unsigned int dom_en;
unsigned int dbnc_ctrl;
unsigned int dbnc_set;
unsigned int dbnc_clr;
};
struct mtk_eint_hw {
u8 port_mask;
u8 ports;
unsigned int ap_num;
unsigned int db_cnt;
const unsigned int *db_time;
};
extern const unsigned int debounce_time_mt2701[];
extern const unsigned int debounce_time_mt6765[];
extern const unsigned int debounce_time_mt6795[];
struct mtk_eint;
struct mtk_eint_xt {
int (*get_gpio_n)(void *data, unsigned long eint_n,
unsigned int *gpio_n,
struct gpio_chip **gpio_chip);
int (*get_gpio_state)(void *data, unsigned long eint_n);
int (*set_gpio_as_eint)(void *data, unsigned long eint_n);
};
struct mtk_eint {
struct device *dev;
void __iomem *base;
struct irq_domain *domain;
int irq;
int *dual_edge;
u32 *wake_mask;
u32 *cur_mask;
/* Used to fit into various EINT device */
const struct mtk_eint_hw *hw;
const struct mtk_eint_regs *regs;
u16 num_db_time;
/* Used to fit into various pinctrl device */
void *pctl;
const struct mtk_eint_xt *gpio_xlate;
};
#if IS_ENABLED(CONFIG_EINT_MTK)
int mtk_eint_do_init(struct mtk_eint *eint);
int mtk_eint_do_suspend(struct mtk_eint *eint);
int mtk_eint_do_resume(struct mtk_eint *eint);
int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
unsigned int debounce);
int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n);
#else
static inline int mtk_eint_do_init(struct mtk_eint *eint)
{
return -EOPNOTSUPP;
}
static inline int mtk_eint_do_suspend(struct mtk_eint *eint)
{
return -EOPNOTSUPP;
}
static inline int mtk_eint_do_resume(struct mtk_eint *eint)
{
return -EOPNOTSUPP;
}
static inline int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
unsigned int debounce)
{
return -EOPNOTSUPP;
}
static inline int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n)
{
return -EOPNOTSUPP;
}
#endif
#endif /* __MTK_EINT_H */
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