1b398a9a7SJoseph Chen /* 2b398a9a7SJoseph Chen * (C) Copyright 2017 Rockchip Electronics Co., Ltd 3b398a9a7SJoseph Chen * 4b398a9a7SJoseph Chen * SPDX-License-Identifier: GPL-2.0+ 5b398a9a7SJoseph Chen */ 6b398a9a7SJoseph Chen 7b398a9a7SJoseph Chen #ifndef _KEY_H_ 8b398a9a7SJoseph Chen #define _KEY_H_ 9b398a9a7SJoseph Chen 1064048c53SJoseph Chen #include <asm-generic/gpio.h> 110abc3779SJoseph Chen #include <dt-bindings/input/linux-event-codes.h> 126d82ce07SJoseph Chen 13c315aab8SJoseph Chen #define KEY_LONG_DOWN_MS 2000 14c315aab8SJoseph Chen 1564048c53SJoseph Chen enum { 1664048c53SJoseph Chen INVAL_KEY = 0x0, 1764048c53SJoseph Chen ADC_KEY = 0x1, 1864048c53SJoseph Chen GPIO_KEY = 0x2, 1964048c53SJoseph Chen }; 2064048c53SJoseph Chen 21*5a54baa7SJoseph Chen enum key_event { 22deedd356SJoseph Chen KEY_PRESS_NONE, /* press without release */ 23deedd356SJoseph Chen KEY_PRESS_DOWN, /* press -> release */ 24c315aab8SJoseph Chen KEY_PRESS_LONG_DOWN, 25a2df9606SJoseph Chen KEY_NOT_EXIST, 26b398a9a7SJoseph Chen }; 27b398a9a7SJoseph Chen 28*5a54baa7SJoseph Chen struct dm_key_uclass_platdata { 29a2df9606SJoseph Chen const char *name; 309f1dd9dfSJoseph Chen bool pre_reloc; 31a2df9606SJoseph Chen u32 code; 3264048c53SJoseph Chen u8 type; 33a2df9606SJoseph Chen 3464048c53SJoseph Chen /* ADC key */ 3564048c53SJoseph Chen u8 channel; 36*5a54baa7SJoseph Chen u32 adcval; 37*5a54baa7SJoseph Chen u32 min; 38*5a54baa7SJoseph Chen u32 max; 3964048c53SJoseph Chen 4064048c53SJoseph Chen /* GPIO key */ 41a2df9606SJoseph Chen u32 irq; 42*5a54baa7SJoseph Chen u32 gpios[2]; 4364048c53SJoseph Chen struct gpio_desc gpio; 4464048c53SJoseph Chen 45*5a54baa7SJoseph Chen u64 rise_ms; 46*5a54baa7SJoseph Chen u64 fall_ms; 4764048c53SJoseph Chen }; 48b398a9a7SJoseph Chen 4964048c53SJoseph Chen /* Use it instead of get_timer() in key interrupt handler */ 5064048c53SJoseph Chen uint64_t key_timer(uint64_t base); 5164048c53SJoseph Chen 5264048c53SJoseph Chen /* Confirm if your key value is a press event */ 5364048c53SJoseph Chen int key_is_pressed(int keyval); 5464048c53SJoseph Chen 5564048c53SJoseph Chen /* Read key */ 5664048c53SJoseph Chen int key_read(int code); 5764048c53SJoseph Chen 58*5a54baa7SJoseph Chen int key_bind_children(struct udevice *dev, const char *drv_name); 59*5a54baa7SJoseph Chen 60b398a9a7SJoseph Chen #endif 61