BT848 loose PAL color with 2.4 to 2.6 kernel swicthing
[note: I posted a bug report in kernel bugzilla, but there may be more
users of the targeted hardware here than in kernel list]
Hello,
I have problems to make a frame grabber card working with colors
in PAL mode after a switch from 2.4 to 2.6 kernel.
The card is an embedded PC104+ with a BT848 chip. It has a camera
connected on Television input slot.
The embedded system was previously installed with a 2.4.20 kernel
from a RedHat installation. When booting bttv module identified
tuner to 4 (found to be tuner absent) and BT848A card to 0
(unknown/generic).
I made several tests with xawtv, and the system worked with PAL
mode, I even made some developments do directly get images and
send them via CORBA.
To have better support for USB+Wifi I setup another HD with a
Debian Sarge, with a 2.6.8 kernel (updated to 2.6.12-rc4 to solve
some problems with Wifi).
With 2.6 kernels the card is well recognized as 0 (unknown/generic),
tuner is recognized as 0 (notuner).
But PAL mode no longer work. I could make the card work with PAL-Nc,
but with black and white images only. I tried to force bttv driver
options with tuner set to 4 as previously, but problem remain the
same.
I tried to compare 2.4 and 2.6 sources, but they are too different
so I cannot found the beginning of a solution.
Can a bttv driver expert give me some way to modify/test (maybe this
is just a chip register parameter to adjust), I can modify sources to
do some tests if necessary.
Thanks for any idea/solution path.
L. Pointal
The frame-grabber PC104 card:
=============================
A BT848AKPF on a PC104-plus card from Digital Logic:
http://www.digitallogic.ch/english/products/datasheets/pc104_peripherials_detail.asp?id=MSMG104-Plus
Picture here (2Mb):
http://www.limsi.fr/Individu/pointal/koala/koala-frmgrab-full.jpg
The embedded system, a Koala robot:
http://www.limsi.fr/Individu/pointal/koala/
My kernel configuration:
========================
http://www.limsi.fr/Individu/pointal/koala/config-2.6.12-rc4koala
One xawtv log file:
===================
http://www.limsi.fr/Individu/pointal/koala/xawlog.txt
Xawtv running with PAL and PAL-Nc modes:
========================================
http://www.limsi.fr/Individu/pointal/koala/capture-PAL.jpeg
http://www.limsi.fr/Individu/pointal/koala/capture-PALNc.jpeg
/var/log/messages part about bttv:
==================================
(kernel 2.6.12-rc4)
Jun 17 15:53:32 koala25 kernel: [ 36.890573] Linux video capture
interface: v1.00
Jun 17 15:53:32 koala25 kernel: [ 38.040485] bttv: driver version
0.9.15 loaded
Jun 17 15:53:32 koala25 kernel: [ 38.040575] bttv: using 8 buffers
with 2080k (520 pages) each for capture
Jun 17 15:53:32 koala25 kernel: [ 38.040631] bttv: Host bridge needs
ETBF enabled.
Jun 17 15:53:32 koala25 kernel: [ 38.152395] bttv: Bt8xx card found (0).
Jun 17 15:53:32 koala25 kernel: [ 38.152548] PCI: Found IRQ 11 for
device 0000:00:09.0
Jun 17 15:53:32 koala25 kernel: [ 38.152643] PCI: Sharing IRQ 11 with
0000:00:12.0
Jun 17 15:53:32 koala25 kernel: [ 38.152738] bttv0: Bt848 (rev 18) at
0000:00:09.0, irq: 11, latency: 132, mmio: 0xfe000000
Jun 17 15:53:32 koala25 kernel: [ 38.152912] bttv0: using: ***
UNKNOWN/GENERIC *** [card=0,insmod option]
Jun 17 15:53:32 koala25 kernel: [ 38.153012] bttv0: enabling ETBF
(430FX/VP3 compatibilty)
Jun 17 15:53:32 koala25 kernel: [ 38.269493] tveeprom(bttv internal):
Huh, no eeprom present (err=-121)?
Jun 17 15:53:32 koala25 kernel: [ 38.269590] bttv0: using tuner=4
Jun 17 15:53:32 koala25 kernel: [ 38.269642] bttv0: i2c: checking for
MSP34xx @ 0x80... not found
Jun 17 15:53:32 koala25 kernel: [ 38.271935] bttv0: i2c: checking for
TDA9875 @ 0xb0... not found
Jun 17 15:53:32 koala25 kernel: [ 38.274252] bttv0: i2c: checking for
TDA7432 @ 0x8a... not found
Jun 17 15:53:32 koala25 kernel: [ 38.276535] bttv0: i2c: checking for
TDA9887 @ 0x86... not found
Jun 17 15:53:32 koala25 kernel: [ 38.443859] bttv0: registered device
video0
Jun 17 15:53:32 koala25 kernel: [ 38.553278] bttv0: registered device vbi0
(IRQ shared with network card)
Jun 17 15:53:32 koala25 kernel: [ 31.496241] e100: Intel(R) PRO/100
Network Driver, 3.3.6-k2-NAPI
Jun 17 15:53:32 koala25 kernel: [ 31.496330] e100: Copyright(c)
1999-2004 Intel Corporation
Jun 17 15:53:32 koala25 kernel: [ 31.608214] PCI: Found IRQ 11 for
device 0000:00:12.0
Jun 17 15:53:32 koala25 kernel: [ 31.608331] PCI: Sharing IRQ 11 with
0000:00:09.0
Jun 17 15:53:32 koala25 kernel: [ 31.654093] e100: eth0: e100_probe:
addr 0xfc020000, irq 11, MAC addr 00:30:59:01:93:77
Jun 17 15:53:32 koala25 kernel: [ 36.010904] piix4_smbus 0000:00:07.3:
Found 0000:00:07.3 device
--
Laurent POINTAL
CNRS-LIMSI dépt. CHM, groupes AMI et PS
Courriel: laurent.pointal@limsi.fr (prof)
laurent.pointal@laposte.net (perso)
Ouebe: http://www.limsi.fr/Individu/pointal/
Tél. 01 69 85 81 06 (prof)
Fax. 01 69 85 80 88
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