全志A20平台实现VGA和HDMI双屏同显

1）sys_config.fex中配置如下：

配置VGA 1024x768输出

disp_init_enable = 1

disp_mode = 0

screen0_output_type = 4

screen0_output_mode = 4

screen1_output_type = 1

screen1_output_mode = 4

2)请把sys_config.fex中的fb0_scaler_mode_enable = 1改为fb0_scaler_mode_enable = 0；

3)android/system/core/init/init.c console_init_action 函数注释掉这一行 //init_initdisplay();

4）android\frameworks\base\services\java\com\android\server \system\SystemServer.java

中对热插拔检测和输出模式的控制全部屏蔽掉

5）android\frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\policy\DisplayController.java

中控制显示输出的策略模式由mDispHotPolicy = new HomletHotPlug()改成mDispHotPolicy = new StatusBarPadHotPlug()

6）设置中切换HDMI

android/device/softwinner/common/packages/TvdSettings/src/com/android/settings/DisplaySettings.java

switchDispMode函数

- if (displayManager.getDisplayOutputType(0) != item.mOutputType

- || displayManager.getDisplayOutputFormat(0) != item.mFormat) {

+ if (displayManager.getDisplayOutputType(1) != item.mOutputType

+ || displayManager.getDisplayOutputFormat(1) != item.mFormat) {

// displayManager.setDisplayOutputType(0, item.mOutputType,

// item.mFormat);

- displayManager.setDisplayParameter(0, item.mOutputType,

+ displayManager.setDisplayParameter(1, item.mOutputType,

item.mFormat);

+ //displayManager

+ // .setDisplayMode(DisplayManagerAw.DISPLAY_MODE_SINGLE_FB_GPU);

displayManager

- .setDisplayMode(DisplayManagerAw.DISPLAY_MODE_SINGLE_FB_GPU);

+ .setDisplayMode(DisplayManagerAw.DISPLAY_MODE_DUALSAME);

// 设置音频输出模式

设置中的切边

--- a/packages/TvdSettings/src/com/android/settings/DisplayTrimmingPreference.java

+++ b/packages/TvdSettings/src/com/android/settings/DisplayTrimmingPreference.java

@@ -112,7 +112,7 @@ public class DisplayTrimmingPreference extends SeekBarDialogPreference implement

return ret;

}

private void setDisplayPercent(int value) {

- mDisplayManagerAw.setDisplayAreaPercent(0,value);

+ mDisplayManagerAw.setDisplayAreaPercent(1,value);^M

}

设置中的饱和度

--- a/packages/TvdSettings/src/com/android/settings/SaturationPreference.java

+++ b/packages/TvdSettings/src/com/android/settings/SaturationPreference.java

@@ -85,7 +85,7 @@ public class SaturationPreference extends SeekBarDialogPreference implements

Settings.System.COLOR_SATURATION, value);

}

private void setSaturation(int saturation) {

- mDisplayManagerAw.setDisplaySaturation(0,saturation);

+ mDisplayManagerAw.setDisplaySaturation(1,saturation);^M

}

设置中的亮度

--- a/packages/TvdSettings/src/com/android/settings/TVBrightnessPreference.java

+++ b/packages/TvdSettings/src/com/android/settings/TVBrightnessPreference.java

@@ -152,7 +152,7 @@ public class TVBrightnessPreference extends SeekBarDialogPreference implements



DisplayManagerAw dm = (DisplayManagerAw) getContext().getSystemService(Context.DISPLAY_SERVICE_AW);

if (dm != null) {

- dm.setDisplayBright(0,brightness);

+ dm.setDisplayBright(1,brightness);

}

}

设置中的对比度

--- a/packages/TvdSettings/src/com/android/settings/ContrastPreference.java

+++ b/packages/TvdSettings/src/com/android/settings/ContrastPreference.java

@@ -90,7 +90,7 @@ public class ContrastPreference extends SeekBarDialogPreference implements

Settings.System.COLOR_CONTRAST,value);

}

private void setContrast(int Contrasrt) {

- mDisplayManagerAw.setDisplayContrast(0,Contrasrt);

+ mDisplayManagerAw.setDisplayContrast(1,Contrasrt);^M

}