Android触摸屏驱动屏幕翻转

项目中移植了Android触摸屏驱动，后来需要把屏幕翻转180度，此时触摸的坐标是没有适配的，修改以下代码即可：

frameworks/native/services/inputflinger/InputReader.cpp

void TouchInputMapper::configureSurface(nsecs_t when, bool* outResetNeeded) {

int32_t oldDeviceMode = mDeviceMode;

……

if (viewportChanged) {
mViewport = newViewport;

char buffer_orientation[PROP_VALUE_MAX];
memset(buffer_orientation, 0, sizeof(buffer_orientation));
property_get("persist.sys.panel.flip", buffer_orientation, "0");
int cmpRet = atoi(buffer_orientation);
ALOGI("persist.sys.hwrotation~~~~~~~~~~~~~~~~~~~~~~~~~ = %d",cmpRet);
if (cmpRet == 0)
{
mViewport.orientation = DISPLAY_ORIENTATION_0;
}
else if(cmpRet == 90)
{
mViewport.orientation = DISPLAY_ORIENTATION_90;
}
else if(cmpRet == 180)
{
mViewport.orientation = DISPLAY_ORIENTATION_180;
}
else if(cmpRet == 270)
{
mViewport.orientation = DISPLAY_ORIENTATION_270;
}

if (mDeviceMode == DEVICE_MODE_DIRECT || mDeviceMode == DEVICE_MODE_POINTER) {

……

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