tests/video.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   if (cmd == VIDIOCGTUNER) {
   6     struct video_tuner v;
   7     if (copy_from_user(&v, arg, sizeof(v)) != 0)
   8       return -EFAULT;
   9     if (v.tuner)        /* Only 1 tuner */
  10       return -EINVAL;
  11     v.rangelow = 875 * 1600;
  12     v.rangehigh = 1080 * 1600;
  13     v.flags = VIDEO_TUNER_LOW;
  14     v.mode = VIDEO_MODE_AUTO;
  15     v.signal = 0xFFFF;  /* We can't get the signal strength */
  16     strcpy(v.name, "FM");
  17     if (copy_to_user(arg, v, sizeof(v)))
  18       return -EFAULT;
  19   }
  20   else if (cmd == VIDIOCSTUNER) {
  21     struct video_tuner v;
  22     if (copy_from_user(&v, arg, sizeof(v)))
  23       return -EFAULT;
  24     if (v.tuner != 0)
  25       return -EINVAL;
  26     /* Only 1 tuner so no setting needed ! */
  27   } else return -ENOIOCTLCMD;
  28   /*
  29   else if(cmd == VIDIOCSFREQ) {
  30     if (copy_from_user(typhoon->curfreq, arg, sizeof(typhoon->curfreq)))
  31       return -EFAULT;
  32     typhoon_setfreq(typhoon, typhoon->curfreq);
  33     return 0;
  34   }*/
  35   return 0;
  36 }