[mpeg2] Re: kfir and linux 2.4.XX

["Mark Cuss" <mcuss@cdlsystems.com>]

Hello!

I've been using the Kfir board under RedHat 7.2 with the kernel upgraded to
2.4.13.  We did need to do some mods to the driver which, unfortunately, are
not very well documented.  We needed to fix some stuff to do with DMA and to
fix the unloading of the module.

If you need more info I could probably send you the new, changed code.

Mark

----- Original Message -----
From: "Andrew Thomas" <dat@hpl.hp.com>
To: <mpeg2@linuxtv.org>
Cc: <dat@hpldat.hpl.hp.com>
Sent: Thursday, November 01, 2001 7:14 PM
Subject: [mpeg2] kfir and linux 2.4.XX


> I am trying to get a Kfir board working with the Linux driver.
>
> I know that the card does work, I've successfully used it on a
> Windows 98 machine and encoded a NTSC stream.
>
> I've tried several versions of the linux kernel with Redhat 7.2
> filesystem/applications. The kernels I've used are built from 2.4.2
> (Redhat SRPM), 2.4.12 (Redhat SRPM) and 2.4.9 (vanilla Linus
> distribution).
>
> I've also tried 4 different PC's: Pentium 166/Intel Triton;
> 1Ghz P3 Serverworks chipset; 450Mhz P3 Intel chipset; 750 MHz P3
(different
> intel chipset). [All of these machines are made by HP of course..]
>
> And I'm using the cvs version of the driver. I've used i2c-core and
> i2c-algo-bits from both the kernel distribution and those in the cvs
> tree.
>
> Moreover, I've also tried both PAL and NTSC signals.
>
> The behaviour is typically: the modules load successfully, but
>
> cat /dev/video0 > /tmp/foo.mpg
>
> generates a zero length file.
>
> However, on the Pentium machine, the same command locks up the system
> (requiring a reset) - I used this hardware and Win98 to test the kfir
card,
> and and the card does work with win98 on that platform.
>
> I'd like to hear from anyone that has this card working. Could you
> let me know what kernel version you're running, on what hardware,
> and any changes you might have made to the driver?
>
> I've started tinkering with the source, but it's very difficult to
> make progress as the driver is the only documentation I have. Are there
> any documents available which describe the hardware? (at the level
> of detail where it would be possible to maintain the driver)
>
> Many thanks,
>
> Andrew
> -------------
> Andrew Thomas                  | DISCLAIMER: opinions expressed in this
> Hewlett-Packard Laboratories   | message are personal and do not represent
> 1501 Page Mill Road  MS 1U-17  | the opinions of Hewlett Packard Co.
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>
>