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- .. 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
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