Linux如何查看与/dev/input目录下的event对应的设备
转载：https://blog.csdn.net/cupidove/article/details/23122645
1. /dev/input目录
/dev/input目录下的事件都是在驱动中调用input_register_device(struct input_dev *dev)产生的。如我的盒子的/dev/input目录的内容如下：
- crw-rw---- root input 13, 64 1970-01-01 08:00 event0
- crw-rw---- root input 13, 65 1970-01-01 08:00 event1
- crw-rw---- root input 13, 66 1970-01-01 08:00 event2
- crw-rw---- root input 13, 67 1970-01-01 08:00 event3
- crw-rw---- root input 13, 68 1970-01-01 08:00 event4
- crw-rw---- root input 13, 69 1970-01-01 08:00 event5
- crw-rw---- root input 13, 70 2013-08-30 09:56 event6
每个event将上报指定的事件，如G-Sensor、触摸屏、Mouse、按键等。
2. 与event对应的设备信息
与event对应的相关设备信息位于/proc/bus/input/devices，例子如下：
- root@android:/ # cat /proc/bus/input/devices
- cat /proc/bus/input/devices
- I: Bus=0019 Vendor=0001 Product=0001 Version=0100
- N: Name="rk29-keypad"
- P: Phys=gpio-keys/input0
- S: Sysfs=/devices/platform/rk29-keypad/input/input0
- U: Uniq=
- H: Handlers=kbd event0 keychord
- B: PROP=0
- B: EV=3
- B: KEY=8000 100000 0 0 0
- I: Bus=0019 Vendor=0001 Product=0001 Version=0100
- N: Name="rkxx-remotectl"
- P: Phys=gpio-keys/input0
- S: Sysfs=/devices/platform/rkxx-remotectl/input/input1
- U: Uniq=
- H: Handlers=kbd event1 keychord
- B: PROP=0
- B: EV=3
- B: KEY=c 70110 260000 0 0 0 20100 2000000 7800000 4000a800 1e16c0 19 78000000 10006ffc
- I: Bus=0003 Vendor=0c45 Product=1109 Version=0100
- N: Name="coocaa Device coocaa Wireless Device"
- P: Phys=usb-usb20_host-1.3/input2
- S: Sysfs=/devices/platform/usb20_host/usb2/2-1/2-1.3/2-1.3:1.2/input/input2
- U: Uniq=
- H: Handlers=sysrq kbd event2 keychord
- B: PROP=0
- B: EV=12001b
- B: KEY=10000 7 ff800000 7ff febeffdf ffefffff ffffffff fffffffe
- B: ABS=700 0
- B: MSC=10
- B: LED=1f
- I: Bus=0003 Vendor=0c45 Product=1109 Version=0100
- N: Name="coocaa Device coocaa Wireless Device"
- P: Phys=usb-usb20_host-1.3/input3
- S: Sysfs=/devices/platform/usb20_host/usb2/2-1/2-1.3/2-1.3:1.3/input/input3
- U: Uniq=
- H: Handlers=sysrq kbd event3 keychord
- B: PROP=0
- B: EV=12001f
- B: KEY=4837fff 72ff32d bf544446 0 0 1 30f90 8b17c007 ffe77bfa d941dfff febeffdf ffefffff ffffffff fffffffe
- B: REL=40
- B: ABS=ffffff01 0
- B: MSC=10
- B: LED=1f
- I: Bus=0003 Vendor=0c45 Product=1109 Version=0100
- N: Name="coocaa Device coocaa Wireless Device"
- P: Phys=usb-usb20_host-1.3/input4
- S: Sysfs=/devices/platform/usb20_host/usb2/2-1/2-1.3/2-1.3:1.4/input/input4
- U: Uniq=
- H: Handlers=event4
- B: PROP=0
- B: EV=17
- B: KEY=1f0000 0 0 0 0 0 0 0 0
- B: REL=103
- B: MSC=10
- I: Bus=0003 Vendor=0c45 Product=1109 Version=0100
- N: Name="coocaa Device coocaa Wireless Device"
- P: Phys=usb-usb20_host-1.3/input5
- S: Sysfs=/devices/platform/usb20_host/usb2/2-1/2-1.3/2-1.3:1.5/input/input5
- U: Uniq=
- H: Handlers=sysrq kbd event5 keychord
- B: PROP=0
- B: EV=12001f
- B: KEY=4837fff 72ff32d bf544446 0 0 1 30f90 8b17c007 ffff7bfa d941dfff febeffdf ffefffff ffffffff fffffffe
- B: REL=40
- B: ABS=1 0
- B: MSC=10
- B: LED=1f
- I: Bus=0003 Vendor=093a Product=2510 Version=0111
- N: Name="PixArt USB Optical Mouse"
- P: Phys=usb-usb20_host-1.2.4/input0
- S: Sysfs=/devices/platform/usb20_host/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/input/input7
- U: Uniq=
- H: Handlers=event6
- B: PROP=0
- B: EV=17
- B: KEY=70000 0 0 0 0 0 0 0 0
- B: REL=103
- B: MSC=10
- 查看CPU信息：cat /proc/cpuinfo
- 查看内存信息：cat /proc/meminfo
- 查看USB设备：cat /proc/bus/usb/devices
- 查看键盘和鼠标:cat /proc/bus/input/devices
- 查看各分区使用情况：df
- 查看体系结构：busybox uname -a
- 查看中断信息：cat /proc/interrupts
在上面的H:中可以看到对应的eventxx
