projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5377d91f MH |
1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | .. _FE_ENABLE_HIGH_LNB_VOLTAGE: | |
| 4 | ||
| 5 | ******************************** | |
| 6 | ioctl FE_ENABLE_HIGH_LNB_VOLTAGE | |
| 7 | ******************************** | |
| 8 | ||
| 9 | *man FE_ENABLE_HIGH_LNB_VOLTAGE(2)* | |
| 10 | ||
| 11 | Select output DC level between normal LNBf voltages or higher LNBf | |
| 12 | voltages. | |
| 13 | ||
| 14 | ||
| 15 | Synopsis | |
| 16 | ======== | |
| 17 | ||
| b7e67f6c | 18 | .. cpp:function:: int ioctl( int fd, int request, unsigned int high ) |
| 5377d91f MH |
19 | |
| 20 | Arguments | |
| 21 | ========= | |
| 22 | ||
| 23 | ``fd`` | |
| 24 | File descriptor returned by :ref:`open() <frontend_f_open>`. | |
| 25 | ||
| 26 | ``request`` | |
| 27 | FE_ENABLE_HIGH_LNB_VOLTAGE | |
| 28 | ||
| 29 | ``high`` | |
| 30 | Valid flags: | |
| 31 | ||
| 32 | - 0 - normal 13V and 18V. | |
| 33 | ||
| 34 | - >0 - enables slightly higher voltages instead of 13/18V, in order | |
| 35 | to compensate for long antenna cables. | |
| 36 | ||
| 37 | ||
| 38 | Description | |
| 39 | =========== | |
| 40 | ||
| 41 | Select output DC level between normal LNBf voltages or higher LNBf | |
| 42 | voltages between 0 (normal) or a value grater than 0 for higher | |
| 43 | voltages. | |
| 44 | ||
| 45 | RETURN VALUE | |
| 46 | ||
| 47 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
| 48 | appropriately. The generic error codes are described at the | |
| 49 | :ref:`Generic Error Codes <gen-errors>` chapter. |