ref: f596580cba7c5b7bae84ee7cd83d2b2a438a1e9b
dir: /sys/src/cmd/nusb/serial/ucons.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include <fcall.h>
#include <9p.h>
#include "usb.h"
#include "serial.h"
enum {
	Net20DCVid	= 0x0525,	/* Ajays usb debug cable */
	Net20DCDid	= 0x127a,
	HuaweiVid	= 0x12d1,
	HuaweiE220	= 0x1003,
};
Cinfo uconsinfo[] = {
	{ Net20DCVid,	Net20DCDid,	1 },
	{ HuaweiVid,	HuaweiE220,	2 },
	{ 0,		0,		0 },
};
int
uconsprobe(Serial *ser)
{
	Usbdev *ud = ser->dev->usb;
	Cinfo *ip;
	if((ip = matchid(uconsinfo, ud->vid, ud->did)) == nil)
		return -1;
	ser->nifcs = ip->cid;
	return 0;
}