tests/video_ver3.c

   1 static int typhoon_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
   2 {
   3         struct typhoon_device *typhoon = dev->priv;
   4
   5         switch (cmd) {
   6         case VIDIOCGTUNER:
   7                 {
   8                         struct video_tuner v;
   9                         if (copy_from_user(&v, arg, sizeof(v)) != 0)
  10                                 return -EFAULT;
  11                         if (v.tuner)    /* Only 1 tuner */
  12                                 return -EINVAL;
  13                         v.rangelow = 875 * 1600;
  14                         v.rangehigh = 1080 * 1600;
  15                         v.flags = VIDEO_TUNER_LOW;
  16                         v.mode = VIDEO_MODE_AUTO;
  17                         v.signal = 0xFFFF;      /* We can't get the signal strength */
  18                         strcpy(v.name, "FM");
  19                         if (copy_to_user(arg, &v, sizeof(v)))
  20                                 return -EFAULT;
  21                         return 0;
  22                 }
  23         }
  24         return -ENOIOCTLCMD;
  25 }