[linux-dvb] cx88-blackbird

Michael Krufky mkrufky at linuxtv.org
Tue Nov 28 14:40:16 CET 2006

Duncan Thomas wrote:
>> I see that the devices created are /dev/video2 and /dev/video3 and if I
>> look
>> at them under Mythtv-setup I can see devices referenced as blackbird.
>> However if I try and view or record programs I get 0 byte files and this
>> entry in my logs
>> MPEGRec(/dev/video3) Error: Can't open video device. eno: Device or
>> resource
>> busy (16)
>> I wonder if the firmware is a bit dodgy.
> Scratch that - It works fine. I can cat /dev/video2 > test.mpg and it
> produces a viewable file (no sound though)
>>From what I can gather Mythtv is not ready for this card yet.

You need to have the mpeg encoder set up in mythtv as a v4l2 mpeg encoder.
I have been told that mythtv has already been updated to use the v4l2
mpeg encoding api -- it SHOULD work fine.

About the sound...  Can you tell me which inputs have sound and which do not?
(TV, radio, composite) ... I know what's wrong with the sound input, and I can
send you a patch to test.

For instance, this should fix sound for TV, but I need you to verify that it
works before I have it added to the repository:

--- cx88.orig/linux/drivers/media/video/cx88/cx88-cards.c
+++ cx88/linux/drivers/media/video/cx88/cx88-cards.c
@@ -1341,7 +1341,6 @@
 			.type   = CX88_VMUX_TELEVISION,
 			.vmux   = 0,
 			.gpio0	= 0xe780,
-			.extadc = 1,
 			.type	= CX88_VMUX_COMPOSITE1,
 			.vmux	= 1,

...if sound is broken on the other inputs, then also remove that ".extadc = 1"
from that input line and give it a test.  Please let me know what happens.


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