1.简介

本章主要讲解MT8168平台的内部SPEAKER驱动配置。分为HP接法和LINE OUT接法。

2.驱动指南

2.1 外部AMP 接到HP

2.1.1 DTS设置

	sound: sound {compatible = "mediatek,mt8168-p1";mediatek,platform = <&afe>;mediatek,adsp-platform = <&adsp_pcm>;......ext-amp1-gpio = <&pio 68 0>;ext-amp2-gpio = <&pio 130 0>;status = "okay";};

2.1.2 ProjectConfig 设置

MTK_AUDIO_SPEAKER_PATH = int_hp_buf

2.1.3 audio_custom_exp.h设置

vendor/mediatek/proprietary/custom/<Project>/hal/audioflinger/audio/audio_custom_exp.h
#define USING_EXTAMP_HP

2.1.4 mixer_paths.xml设置

	<path name="speaker-and-headphone"><ctl name="Headset_Speaker_Amp_Switch" value="On"/><ctl n