Sensor-马达配置

一.基本配置

    1.确定马达类型（qcom,actuator-type）：erm/lra(一般DC是erm，AC是lra)

    2.确定马达频率（qcom,play-rate-us）

    3.确定马达电压（qcom,vmax-mv）

二.花样配置

kernel/msm-4.14/Documentation/devicetree/bindings/input/qti-haptics.txt

wf_x {
/* CLICK */
......
};

wf_x为不同的震动方式，对应系统目录里的/d/haptics/effectx

wf-pattern：

116 - qcom,wf-pattern
117   Usage:      required
118   Value type: <prop-encoded-array>
119   Definition: Specifies the waveform pattern in a byte array that will be
120 		played for the effect-id. The bit fields of each byte are:
121 		 [7]: drive direction, 0 - forward; 1 - reverse
122 		 [6]: overdrive, 0 -- 1x dr