| /* 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> |
| |
| #define MAX_PIN 256 |
| //#define MTK_EINT_DEBUG |
| |
| 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; |
| unsigned int raw_stat; |
| }; |
| |
| struct mtk_eint_ops { |
| void (*ack)(struct irq_data *d); |
| }; |
| |
| struct mtk_eint_compatible { |
| struct mtk_eint_ops ops; |
| const struct mtk_eint_regs *regs; |
| }; |
| |
| struct mtk_eint_pin { |
| bool enabled; |
| u8 instance; |
| u8 index; |
| bool debounce; |
| bool dual_edge; |
| }; |
| |
| struct mtk_eint_instance { |
| const char *name; |
| void __iomem *base; |
| unsigned int number; |
| u8 pin_list[MAX_PIN]; |
| unsigned int *wake_mask; |
| unsigned int *cur_mask; |
| }; |
| |
| 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; |
| struct irq_domain *domain; |
| int irq; |
| |
| /* An array to record the coordinate, index by global EINT ID */ |
| struct mtk_eint_pin *pins; |
| /* An array to record the global EINT ID, index by coordinate*/ |
| struct mtk_eint_instance *instances; |
| unsigned int total_pin_number; |
| unsigned int instance_number; |
| unsigned int dump_target_eint; |
| const struct mtk_eint_compatible *comp; |
| |
| /* Used to fit into various pinctrl device */ |
| void *pctl; |
| const struct mtk_eint_xt *gpio_xlate; |
| }; |
| |
| #if IS_ENABLED(CONFIG_DEVICE_MODULES_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); |
| int dump_eint_pin_status(unsigned int eint_num, char *buf, unsigned int buf_size); |
| |
| #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; |
| } |
| |
| static inline void dump_eint_pin_status(unsigned int eint_num) |
| { |
| return -EOPNOTSUPP; |
| } |
| #endif |
| #endif /* __MTK_EINT_H */ |
