diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/video4linux/README.cx88 | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/Documentation/video4linux/README.cx88')
-rw-r--r-- | kernel/Documentation/video4linux/README.cx88 | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/kernel/Documentation/video4linux/README.cx88 b/kernel/Documentation/video4linux/README.cx88 new file mode 100644 index 000000000..35fae23f8 --- /dev/null +++ b/kernel/Documentation/video4linux/README.cx88 @@ -0,0 +1,67 @@ +cx8800 release notes +==================== + +This is a v4l2 device driver for the cx2388x chip. + + +current status +============== + +video + - Basically works. + - For now, only capture and read(). Overlay isn't supported. + +audio + - The chip specs for the on-chip TV sound decoder are next + to useless :-/ + - Neverless the builtin TV sound decoder starts working now, + at least for some standards. + FOR ANY REPORTS ON THIS PLEASE MENTION THE TV NORM YOU ARE + USING. + - Most tuner chips do provide mono sound, which may or may not + be useable depending on the board design. With the Hauppauge + cards it works, so there is mono sound available as fallback. + - audio data dma (i.e. recording without loopback cable to the + sound card) is supported via cx88-alsa. + +vbi + - Code present. Works for NTSC closed caption. PAL and other + TV norms may or may not work. + + +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: + + 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. I need at least the + following informations 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 + +Have fun, + + Gerd + +-- +Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] |