projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5377d91f MH |
1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | .. _FE_GET_FRONTEND: | |
| 4 | ||
| 5 | *************** | |
| 6 | FE_GET_FRONTEND | |
| 7 | *************** | |
| 8 | ||
| 15e7d615 | 9 | Name |
| 586027ce | 10 | ==== |
| 5377d91f | 11 | |
| 586027ce | 12 | FE_GET_FRONTEND |
| 5377d91f | 13 | |
| cf8076c3 MCC |
14 | .. attention:: This ioctl is deprecated. |
| 15 | ||
| 15e7d615 MCC |
16 | |
| 17 | Synopsis | |
| 586027ce | 18 | ======== |
| 5377d91f | 19 | |
| cf8076c3 MCC |
20 | .. c:function:: int ioctl(int fd, FE_GET_FRONTEND, struct dvb_frontend_parameters *p) |
| 21 | :name: FE_GET_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 | |
| 5377d91f | 30 | |
| cf8076c3 MCC |
31 | ``p`` |
| 32 | Points to parameters for tuning operation. | |
| 5377d91f MH |
33 | |
| 34 | ||
| 15e7d615 | 35 | Description |
| 586027ce MCC |
36 | =========== |
| 37 | ||
| 38 | This ioctl call queries the currently effective frontend parameters. For | |
| 39 | this command, read-only access to the device is sufficient. | |
| 40 | ||
| 41 | ||
| 15e7d615 | 42 | Return Value |
| 586027ce | 43 | ============ |
| 5377d91f MH |
44 | |
| 45 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
| 46 | appropriately. The generic error codes are described at the | |
| 47 | :ref:`Generic Error Codes <gen-errors>` chapter. | |
| 48 | ||
| 49 | ||
| 50 | ||
| 51 | .. flat-table:: | |
| 52 | :header-rows: 0 | |
| 53 | :stub-columns: 0 | |
| 54 | ||
| 55 | ||
| 56 | - .. row 1 | |
| 57 | ||
| cdb4af0f | 58 | - ``EINVAL`` |
| 5377d91f MH |
59 | |
| 60 | - Maximum supported symbol rate reached. |