I.MX6 USB Camera

/*************************************************************************
*                         I.MX6 USB Camera
* 说明：
*     今天购买了个USB Camera，用来测试一下驱动。
*
*                                      2017-1-23 深圳 南山平山村 曾剑锋
************************************************************************/

一、参考文档：
1. Using a USB Camera with GStreamer https://community.nxp.com/docs/DOC-93688 2. Webcam (Linux) http://developer.toradex.com/knowledge-base/webcam-(linux) 
二、USB Camera配置：
Device Drivers -> Multimedia support -> Video capture adapters -> V4L USB devices -> <*> USB Video Class (UVC)

三、识别输出信息：
[zengjf@root /dev]#  ls /dev/video*
/dev/video0   /dev/video16  /dev/video17  /dev/video18
[zengjf@root /dev]#  usb 2-1.3: new high speed USB device number 5 using fsl-ehci
usb 2-1.3: New USB device found, idVendor=057e, idProduct=030a
usb 2-1.3: New USB device strings: Mfr=48, Product=96, SerialNumber=0
usb 2-1.3: Product: USB Camera
usb 2-1.3: Manufacturer: Guillemot Corporation
uvcvideo: Found UVC 1.00 device USB Camera (057e:030a)
input: USB Camera as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.3/2-1.3:1.0/input/input4

[zengjf@root /dev]#  ls /dev/video*
/dev/video0   /dev/video1   /dev/video16  /dev/video17  /dev/video18
[zengjf@root /dev]#  lsusb
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0002
Bus 002 Device 002: ID 0409:005a
Bus 002 Device 005: ID 057e:030a
[zengjf@root /dev]#