| 1 | int p20_ioctl(int cmd, void*arg) { |
| 2 | switch(cmd) { |
| 3 | case VIDIOGCTUNER: { |
| 4 | struct video_tuner v; |
| 5 | if(copy_from_user(&v,arg)!=0) |
| 6 | return -EFAULT; |
| 7 | if(v.tuner) |
| 8 | return -EINVAL; |
| 9 | v.rangelow = 87*16000; |
| 10 | v.rangehigh = 108 * 16000; |
| 11 | if(copy_to_user(arg,&v)) |
| 12 | return -EFAULT; |
| 13 | return 0; |
| 14 | } |
| 15 | case AGCTUNER: { |
| 16 | struct video_tuner v; |
| 17 | if(copy_from_user(&v,arg)) |
| 18 | { |
| 19 | return -EFAULT; |
| 20 | } |
| 21 | if(v.tuner) |
| 22 | return -EINVAL; |
| 23 | v.rangelow = 0; |
| 24 | v.rangehigh = 0; |
| 25 | if(copy_to_user(arg,&v)) |
| 26 | return -EFAULT; |
| 27 | return 0; |
| 28 | } |
| 29 | } |
| 30 | } |