root@htcuniversal:~$ cat /proc/bus/input/devices
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="tsc2200-keys"
P: Phys=
S: Sysfs=/class/input/input0
H: Handlers=kbd event0
B: EV=3
B: KEY=1681 7 80000000 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="asic3-keys"
P: Phys=
S: Sysfs=/class/input/input1
H: Handlers=kbd event1
B: EV=3
B: KEY=900000 80 400800 c0001 0 0 0

I: Bus=0019 Vendor=0001 Product=0001 Version=0100
N: Name="gpio-keys"
P: Phys=gpio-keys/input0
S: Sysfs=/class/input/input2
H: Handlers=kbd event2
B: EV=3
B: KEY=100000 0 0 0

root@htcuniversal:~$ modprobe ts-adc-debounce
root@htcuniversal:~$ cat /proc/bus/input/devices
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="tsc2200-keys"
P: Phys=
S: Sysfs=/class/input/input0
H: Handlers=kbd event0
B: EV=3
B: KEY=1681 7 80000000 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="asic3-keys"
P: Phys=
S: Sysfs=/class/input/input1
H: Handlers=kbd event1
B: EV=3
B: KEY=900000 80 400800 c0001 0 0 0

I: Bus=0019 Vendor=0001 Product=0001 Version=0100
N: Name="gpio-keys"
P: Phys=gpio-keys/input0
S: Sysfs=/class/input/input2
H: Handlers=kbd event2
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="ts-adc-debounce"
P: Phys=touchscreen/adc
S: Sysfs=/class/input/input4
H: Handlers=event3
B: EV=b
B: KEY=400 0 0 0 0 0 0 0 0 0 0
B: ABS=1000003