/*
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* (C) Copyright 2017 Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _KEY_H_
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#define _KEY_H_
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#include <asm-generic/gpio.h>
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#include <dt-bindings/input/linux-event-codes.h>
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#define KEY_LONG_DOWN_MS 2000
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enum {
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INVAL_KEY = 0x0,
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ADC_KEY = 0x1,
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GPIO_KEY = 0x2,
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};
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enum key_event {
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KEY_PRESS_NONE, /* press without release */
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KEY_PRESS_DOWN, /* press -> release */
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KEY_PRESS_LONG_DOWN,
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KEY_NOT_EXIST,
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};
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struct dm_key_uclass_platdata {
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const char *name;
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bool pre_reloc;
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u32 code;
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u8 type;
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/* ADC key */
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u8 channel;
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int in_volt;
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int center;
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int min;
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int max;
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/* GPIO key */
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u32 irq;
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u32 gpios[2]; /* gpios[0]: gpio controller phandle, gpios[1]: pin */
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struct gpio_desc gpio;
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u64 rise_ms;
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u64 fall_ms;
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u32 trig_cnt;
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int skip_irq_init;
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/* Only for pwrkey gpio irq */
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void (*irq_thread)(int irq, struct udevice *dev);
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};
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/* Use it instead of get_timer() in key interrupt handler */
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uint64_t key_timer(uint64_t base);
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/* Confirm if your key value is a press event */
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int key_is_pressed(int keyval);
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/* Pwrkey download mode init */
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int pwrkey_download_init(void);
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/* Read key */
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int key_read(int code);
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/* Check whether the key is exist or not, 1: exist, 0: not exist */
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int key_exist(int code);
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int key_bind_children(struct udevice *dev, const char *drv_name);
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#endif
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