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power-key {
/** æ¯CPUçåªä¸ªPin */
gpios = <&gpio0 GPIO_A5 GPIO_ACTIVE_LOW>;
/** Key code */
linux,code = <116>;
/** 起个åå */
label = "power";
/** 该Pinå
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gpio-key,wakeup;
};
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input.h (kernel\include\uapi\linux)
/*
* Keys and buttons
*/
#define KEY_RESERVED 0
#define KEY_ESC 1
#define KEY_BACKSPACE 14
#define KEY_TAB 15
#define KEY_POWER 116 /* SC System Power Down */
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input.h (kernel\include\uapi\linux)
/*
* The event structure itself
*/
struct input_event {
struct timeval time;
__u16 type;
__u16 code;
__s32 value;
};
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