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#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <linux/cp210x.h>
#define log_ioctl(fd,op,arg) do_ioctl(fd,#op,op,arg)
int
do_ioctl (int fd, char *sop, int op, void *arg)
{
int ret;
errno = 0;
ret = ioctl (fd, op, arg);
printf ("ioctl(%d,%s(0x%x),%p)=%d (errno=%d(%s))\n", fd, sop, op, arg, ret,
errno, strerror (errno));
return ret;
}
int
main (int argc, char *argv[])
{
struct cp210x_port_config config;
int fd = open (argv[1], O_RDWR);
memset (&config, 0, sizeof (config));
log_ioctl (fd, CPIOC_PORTCONFGET, &config);
printf ("reset=(%x,%x,%x), suspend=(%x,%x,%x), enhanced_fxn=%x\n",
config.reset.mode,
config.reset.low_power,
config.reset.latch,
config.suspend.mode,
config.suspend.low_power,
config.suspend.latch, config.enhanced_fxn);
}
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