[Bugme-new] [Bug 6671] New: usb tv tuner card doesn't work (eMPIA chipset)

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=6671

           Summary: usb tv tuner card doesn't work (eMPIA chipset)
    Kernel Version: 2.6.16.20
            Status: NEW
          Severity: high
             Owner: drivers_video-other at kernel-bugs.osdl.org
         Submitter: rrs at researchut.com


Most recent kernel where this bug did not occur: N/A
Distribution: Debian
Hardware Environment: Compaq Presario 2200 Series Laptop
Software Environment: 2.6.16.20 kernel
Problem Description: 
I have an eMPIA chipset based USB TV Tuner Card which uses the em28xx.ko 
kernel module. When I load the kernel modules, it loads without any errors but 
the device (/dev/video0) is not created under /dev.

I tried to manually create the video0 device as per the documents but when I 
try to execute any tv application it complain that it cannot open the device.
I believe the current em28xx.ko kernel module doesn't have support for my 
chipset's revision.

Here's the output of lsusb:
learner:~# lsusb
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
Bus 001 Device 006: ID 046d:c00c Logitech, Inc. Optical Wheel Mouse
Bus 001 Device 005: ID 058f:9254 Alcor Micro Corp. Hub
Bus 004 Device 002: ID eb1a:2821 eMPIA Technology, Inc.
Bus 004 Device 001: ID 0000:0000

In the kernel documentation I've not seen 2821 being mentioned as a supported 
device.

I have attached all the required information related to this particular device 
at: http://www.researchut.com/gunther.tar.bz2


Steps to reproduce:
1) Load em28xx.ko (modprobe em28xx)
2) Run any TV application like xawtv/tvtime/mplayer.


Thanks,
Ritesh

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