| .. SPDX-License-Identifier: GPL-2.0 |
| |
| The cx88 driver |
| =============== |
| |
| Author: Gerd Hoffmann |
| |
| This is a v4l2 device driver for the cx2388x chip. |
| |
| |
| Current status |
| -------------- |
| |
| video |
| - Works. |
| - Overlay isn't supported. |
| |
| audio |
| - Works. The TV standard detection is made by the driver, as the |
| hardware has bugs to auto-detect. |
| - audio data dma (i.e. recording without loopback cable to the |
| sound card) is supported via cx88-alsa. |
| |
| vbi |
| - Works. |
| |
| |
| How to add support for new cards |
| -------------------------------- |
| |
| The driver needs some config info for the TV cards. This stuff is in |
| cx88-cards.c. If the driver doesn't work well you likely need a new |
| entry for your card in that file. Check the kernel log (using dmesg) |
| to see whenever the driver knows your card or not. There is a line |
| like this one: |
| |
| .. code-block:: none |
| |
| cx8800[0]: subsystem: 0070:3400, board: Hauppauge WinTV \ |
| 34xxx models [card=1,autodetected] |
| |
| If your card is listed as "board: UNKNOWN/GENERIC" it is unknown to |
| the driver. What to do then? |
| |
| 1) Try upgrading to the latest snapshot, maybe it has been added |
| meanwhile. |
| 2) You can try to create a new entry yourself, have a look at |
| cx88-cards.c. If that worked, mail me your changes as unified |
| diff ("diff -u"). |
| 3) Or you can mail me the config information. We need at least the |
| following information to add the card: |
| |
| - the PCI Subsystem ID ("0070:3400" from the line above, |
| "lspci -v" output is fine too). |
| - the tuner type used by the card. You can try to find one by |
| trial-and-error using the tuner=<n> insmod option. If you |
| know which one the card has you can also have a look at the |
| list in CARDLIST.tuner |
