[linux-dvb] Suggestions for T750

John Newbigin jnewbigin at optusnet.com.au
Tue Apr 24 14:10:26 CEST 2007


Success!

I have to sort out the channels in tvtime and no audio yet but analog tv 
is working.

I'll post an updated patch which works against the experimental branch.

John.

Markus Rechberger wrote:
> On 4/24/07, John Newbigin <jnewbigin at optusnet.com.au> wrote:
>> Markus Rechberger wrote:
>> > Hi,
>> >
>> > did you see the existing xc3028 driver on mcentral.de?
>> >
>> > http://mcentral.de/hg/~mrec/v4l-dvb-experimental/
>> > xc3028-tuner.c (it's implemented in the em28xx, saa7134 and cx88 
>> there)
>> I xc3028 code I have seen is tied to the em28xx driver.  Are there any
>> instructions for using this experimental code?  I am currently 
>> working off
>>
>> http://linuxtv.org/hg/v4l-dvb
>
> the experimental tree is just the same as
> http://linuxtv.org/hg/v4l-dvb it just includes support for around 60
> more devices
>
> http://linuxtv.org/repo/
>
> (just replace http://linuxtv.org/hg/v4l-dvb with
> http://linuxtv.org/hg/v4l-dvb-experimental)
>
> The code isn't tied to the em28xx in the experimental tree (it's used
> with cx88, saa7134 and em28xx)
>
> Best would be to look at em2880-dvb how it's implemented there.
>
> http://mcentral.de/wiki/index.php/Em2880#Installation
>
> the installation instruction for em28xx based devices should also
> apply for your version.
>
> best regards,
>
> Markus
>
>>
>>
>> I have the correct firmware for this card but I don't know how to
>> 'package' it to work with the 3028 driver.
>>
>> Where possible I certainly want to use reuse the existing code.
>>
>> The T750 is a SAA7134(5) based PCI card.  The card also has digital
>> based on the XL10353 and QT1010.
>>
>> John.
>> >
>> > That driver supports xc3028, xc2028, xc3018 chips, you might have some
>> > issues with the firmwares, best would be to try existing packages.
>> >
>> > What kind of device is that?
>> > PCI/Conexant, or something else?
>> >
>> > Markus
>> >
>> > On 4/23/07, John Newbigin <jnewbigin at optusnet.com.au> wrote:
>> >> Here I go replying to myself again.
>> >>
>> >> I have had some success with loading the firmware.  I has a suspicion
>> >> that I needed to twiddle the GPIO pins but could not get it to work.
>> >> Studying the xc3028 driver showed me the way.  The GPIO needs to be
>> >> first cleared and then set before continuing.
>> >>
>> >> The xc3028 is very similar to the xc2028 and they could use a common
>> >> driver.  I don't understand how the firmware file is stored for the
>> >> xc3028 though.  I assume that multiple chunks are encoded into one 
>> file
>> >> somehow.
>> >>
>> >> There is also another firmware chunk which is needed for FM radio
>> >> support so I don't know how that would be added.
>> >>
>> >> Anyway, I have loading firmware but still no TV.  I think I am close
>> >> though.
>> >>
>> >> i2c traces and firmware can be downloaded from here
>> >> http://www.chrysocome.net/downloads/t750-logs-0.1.tar.gz
>> >>
>> >> I'll try and clean up my code and post a patch tomorrow.
>> >>
>> >> John.
>> >>
>> >> John Newbigin wrote:
>> >> > I have made some slow progress with the T750.  I have implemented
>> >> > loading the firmware for the CX2028 but I have hit a problem.
>> >> >
>> >> > After loading the firmware, there are some commands (known as the
>> >> > 'MAGIC VALUES') which need to be issued.  These are the same as for
>> >> > the CX3028.  After this final write, my card does another write and
>> >> > then a read, but when I attempt the final read command the chip 
>> locks
>> >> > up and returns BUSY.
>> >> >
>> >> > Once this happens, the card has to be powered off to reset 
>> everything.
>> >> >
>> >> > Can anyone offer some suggestions of things to try.  I have the
>> >> > feeling I am very close.
>> >> >
>> >> > I have i2c traces if anyone wants to see them but they are quite
>> >> large.
>> >> >
>> >> > John.
>> >> >
>> >> > _______________________________________________
>> >> > linux-dvb mailing list
>> >> > linux-dvb at linuxtv.org
>> >> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>> >> >
>> >>
>> >>
>> >> _______________________________________________
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>> >> linux-dvb at linuxtv.org
>> >> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>> >>
>> >
>> >
>>
>>
>
>




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