Android增加Happy Touch触摸屏支持

1、在hid-ids.h中加入vid pid

1#define USB_VENDOR_ID_HAPPYTOUCH        0x0416

2#define USB_DEVICE_ID_HAPPYTOUCH_SCREEN 0x5030

2、在hid-multitouch.c->mt_devices[] 中加入

1{ .driver_data = MT_CLS_DEFAULT,

2HID_USB_DEVICE(USB_VENDOR_ID_HAPPYTOUCH,

3USB_DEVICE_ID_HAPPYTOUCH_SCREEN) }

3、在hid-core.c->hid_have_special_driver[]中加入HID_USB_DEVICE(VID,PID)

1{ HID_USB_DEVICE(USB_VENDOR_ID_HAPPYTOUCH,USB_DEVICE_ID_HAPPYTOUCH_SCREEN)}

4、设置kernel编译变量

1$exportARCH=arm

2$exportSUBARCH=arm

3$exportCROSS_COMPILE=arm-eabi-

5、在内核的config文件中，确认驱动中是否添加了hid-multitouch模块

运行make menuconfig后，将HID Multitouch panels选上。

1$makeclear

2$makemrproper

3$makemenuconfig

Device Drivers --->HID Devices --->Special HID Drivers --->HID Multitouch panels

6、编译hid-multitouch.ko

1$makeprepare

2$makescripts

3$makeM=drivers/hid

关于如何单独编译kernel驱动的方法，请点击这里。
 

7、设置触摸屏

Android os : > 4.0

android 4.0以后，触摸屏的触摸模式和鼠标模式使用idc文件来做切换。
需要把触摸屏设备的相应idc文件放到 /system/usr/idc/ 目录下。
如下是IRTOUCH Vendor_6615_Product_0085.idc文件的内容：

查看源代码

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1# Copyright (C) 2012 Beijing IRTOUCH SYSTEMS Co.,Ltd

2#

3#

4# Input Device Configuration File for the IRTOUCH touch screen.

5#

6 

7#common

8device.internal = 1

9 

10# Basic Parameters

11touch.deviceType = touchScreen

12touch.orientationAware = 1

13 

14# Size

15touch.size.calibration = diameter

16touch.size.scale = 10

17touch.size.bias = 0

18touch.size.isSummed = 0

19 

20# Pressure

21touch.pressure.calibration = amplitude

22touch.pressure.scale = 0.005

23 

24# Orientation

25touch.orientetion.calibration = none