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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;
- };
- 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;
- /* Used to fit into various pinctrl device */
- void *pctl;
- const struct mtk_eint_xt *gpio_xlate;
- /* Used to support SW debounce */
- struct timer_list *eint_timers;
- int *eint_sw_debounce_en;
- u32 *eint_sw_debounce;
- };
- #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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