/proc/input/devices

root@toshiba:/home/socket# cat /proc/bus/input/devices
I: Bus=0019 Vendor=0001 Product=0001 Version=0100
N: Name="gpio-keys"
P: Phys=gpio-keys/input0
S: Sysfs=/devices/platform/gpio-keys/input/input0
U: Uniq=
H: Handlers=kbd event0
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="nvec keyboard"
P: Phys=nvec
S: Sysfs=/devices/virtual/input/input1
U: Uniq=
H: Handlers=sysrq kbd event1
B: PROP=0
B: EV=120003
B: KEY=82010000 0 800 201affde 1cfff9f ffffffff fffffffe
B: LED=2

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="NVEC sleep button"
P: Phys=NVEC
S: Sysfs=/devices/virtual/input/input2
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=4000 0 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="NVEC power button"
P: Phys=NVEC
S: Sysfs=/devices/virtual/input/input3
U: Uniq=
H: Handlers=kbd event3
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="NVEC lid switch button"
P: Phys=NVEC
S: Sysfs=/devices/virtual/input/input4
U: Uniq=
H: Handlers=event4
B: PROP=0
B: EV=21
B: SW=1

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="tegra-alc5632 Headphone Jack"
P: Phys=ALSA
S: Sysfs=/devices/platform/tegra-snd-alc5632.0/sound/card0/input5
U: Uniq=
H: Handlers=event5
B: PROP=0
B: EV=21
B: SW=4