Hi, list, >From archive of this ML, I found Henrik Rydberg had mentioned (as answer to someone's question):
===quote=== > Where is the correct place in kernel for the multi-touch input support? It depends on your device. If it supports win7 HID extensions for digitizers, adding it to hid-multitouch makes sense. If it is a HID device but it does not quite fit, then it is a new hid driver (which is really discouraged at this point). If it is general usb, then somewhere under drivers/input - there are MT drivers in touchscreen, tablet and mouse. ===end of quote === 1 So here for multitouch, "win 7 HID extensions" is exactly pointing to the below 8 usages supporting? 0x47 Touch valid 0x48 Width 0x49 Height 0x51 Contact identifier 0x52 Device mode 0x53 Device identifier 0x54 Contact count 0x55 Contact count maximum 2 For letting hid-mutitouch.c support one device, this device must support all above 8 usages or just few of them, say 0x47/0x51/0x54 are enough? 3 And how can one know if his device is "win 7 HID extensions" by simple way, say 'lsusb -v'? Thanks for your time and feedback.
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