projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5377d91f MH |
1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | .. _FE_SET_FRONTEND: | |
| 4 | ||
| 5 | *************** | |
| 6 | FE_SET_FRONTEND | |
| 7 | *************** | |
| 8 | ||
| cf8076c3 MCC |
9 | .. attention:: This ioctl is deprecated. |
| 10 | ||
| 15e7d615 | 11 | Name |
| 586027ce | 12 | ==== |
| 5377d91f | 13 | |
| 586027ce | 14 | FE_SET_FRONTEND |
| 5377d91f | 15 | |
| 15e7d615 MCC |
16 | |
| 17 | Synopsis | |
| 586027ce | 18 | ======== |
| 5377d91f | 19 | |
| cf8076c3 MCC |
20 | .. c:function:: int ioctl(int fd, FE_SET_FRONTEND, struct dvb_frontend_parameters *p) |
| 21 | :name: FE_SET_FRONTEND | |
| 5377d91f | 22 | |
| 5377d91f | 23 | |
| 15e7d615 | 24 | Arguments |
| 586027ce | 25 | ========= |
| 5377d91f | 26 | |
| cf8076c3 MCC |
27 | ``fd`` |
| 28 | File descriptor returned by :c:func:`open() <dvb-fe-open>`. | |
| 5377d91f | 29 | |
| cf8076c3 MCC |
30 | ``p`` |
| 31 | Points to parameters for tuning operation. | |
| 5377d91f MH |
32 | |
| 33 | ||
| 15e7d615 | 34 | Description |
| 586027ce MCC |
35 | =========== |
| 36 | ||
| 37 | This ioctl call starts a tuning operation using specified parameters. | |
| 38 | The result of this call will be successful if the parameters were valid | |
| 39 | and the tuning could be initiated. The result of the tuning operation in | |
| 40 | itself, however, will arrive asynchronously as an event (see | |
| 41 | documentation for :ref:`FE_GET_EVENT` and | |
| 42 | FrontendEvent.) If a new :ref:`FE_SET_FRONTEND` | |
| 43 | operation is initiated before the previous one was completed, the | |
| 44 | previous operation will be aborted in favor of the new one. This command | |
| 45 | requires read/write access to the device. | |
| 46 | ||
| 47 | ||
| 15e7d615 | 48 | Return Value |
| 586027ce | 49 | ============ |
| 5377d91f MH |
50 | |
| 51 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
| 52 | appropriately. The generic error codes are described at the | |
| 53 | :ref:`Generic Error Codes <gen-errors>` chapter. | |
| 54 | ||
| 5377d91f MH |
55 | .. flat-table:: |
| 56 | :header-rows: 0 | |
| 57 | :stub-columns: 0 | |
| 58 | ||
| 59 | ||
| 60 | - .. row 1 | |
| 61 | ||
| cdb4af0f | 62 | - ``EINVAL`` |
| 5377d91f MH |
63 | |
| 64 | - Maximum supported symbol rate reached. |