高通Android12增加按键

1、增加pinctrl

LA.UM.9.15.2/kernel/msm-4.19/arch/arm64/boot/dts/qcom/sc12x-evk/scuba-pinctrl.dtsi

&soc {
  	tlmm: pinctrl@500000 {
    	...
       gpio_key_1: gpio_key_1 {
        	mux {
          	pins = "gpio104";
            function = "gpio";
         };

          config {
          	pins = "gpio104";
            drive-strength = <2>;
            bias-pull-up;
            input-enable;
          };
       }

       ...
   }
}

2、在gpio_keys节点下面增加按键

LA.UM.9.15.2/kernel/msm-4.19/arch/arm64/boot/dts/qcom/sc12x-evk/scuba.dtsi

&soc {
	...
   gpio_keys {
    	...
       pinctrl-2 = <&gpio_key_1>;

       key_1 {
        	label = "key_1";
           gpios = <&tlmm 104 GPIO_ACTIVE_LOW>;
           linux,input-type = <1>;
           linux,code = <KEY_1>;
           debounce-interval = <15>;
           linux,can-disable;
       }
   }
}

3、编译

4、查看是否有按键事件

adb shell
getevent
查看是否有按键事件