一.kernel\arch\arm64\boot\dts\rockchip\rk3399-android.dtsi
rk_key: rockchip-key {
compatible = "rockchip,key";
status = "okay";
//io-channels = <&saradc 0>;
vol-up-key {
linux,code = <115>;
label = "volume up";
rockchip,adc_value = <1>;
};
vol-down-key {
linux,code = <114>;
label = "volume down";
rockchip,adc_value = <170>;
};
power-key {
gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
linux,code = <116>;
label = "power";
gpio-key,wakeup;
};
gpio1-key {
gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
linux,code = <131>;
label = "gpio1 key";
gpio-key,wakeup;
};
};
二.frameworks\native\include\android\keycodes.h
/** F1 key. */
AKEYCODE_F1 = 131,
/** F2 key. */
AKEYCODE_F2 = 132,
/** F3 key. */
AKEYCODE_F3 = 133,
三.rk29-keypad.kl 加按键值
系统 优先加载 system\usr\keylayout\rk29-keypad.kl
device\rockchip\common\rk29-keypad.kl
key 59 MENU key 102 HOME key 114 VOLUME_DOWN key 115 VOLUME_UP key 116 POWER key 143 NOTIFICATION key 158 BACK key 212 CAMERA key 217 SEARCH key 131 F1 key 132 F2 key 133 F3
四.frameworks\base\services\core\java\com\android\server\policy\PhoneWindowManager.java
public long interceptKeyBeforeDispatching(WindowState win, KeyEvent event, int policyFlags) {
else if(keyCode == 131){
if (!down) {
//Log.d("gatsby", "gpio1_key xh_flag-> " + xh_flag +" gpio1_key num->"+gpio1_key);
if(xh_flag){
if(gpio1_key %2 !=0){
RootCommand("settings put system screen_brightness 255");
toastTest("Highlight mode!");
}else {
RootCommand("settings put system screen_brightness 110");
toastTest("Normal brightness!");
}
}
gpio1_key++;
}
return -1;
}