[linux-dvb] Re: Twinhan DVB-T progress or lack of thereof

["Louis \(Twinhan\)" <louis_chen@twinhan.com>]

1. About dst_check_ci() function, I am not sure what's it.
    In our current linux driver, it support only VP-1020, and it doesn't
need CI.
    As I know, we will support CI in the feature version of linux driver.

2. About the DVB-T, as I know, it is not supported in current version.
   But we will release in the next version.

Louis



----- Original Message -----
From: "Jamie Honan" <jhonan@optusnet.com.au>
To: "Dmitri Katchalov" <dmitrik@users.sourceforge.net>
Cc: <linux-dvb@linuxtv.org>
Sent: Friday, October 17, 2003 11:08 AM
Subject: [linux-dvb] Re: Twinhan DVB-T progress or lack of thereof


> On Fri, Oct 17, 2003 at 11:35:06AM +1000, Dmitri Katchalov wrote:
> > I'm trying to get Twinhan DVB-T working. As I mentioned before my card
> > is very similar to VP-1020/VP-1030 so I'm using dst frontend as a
> > starting point. I've added my card's PCI ids to bttv-cards.c and dst.c.
> > Now I can load the drivers and everything seem to go smoothly up to the
> > point where DST frontend attempts to verify the presence of CI in
> > dst_check_ci() function. The first write_dst succeeds, read_dst() also
> > succeeds and returns 0xFF as expected. dst_wait_ready() also succeeds
after
> > 0 iterations. The second read_dst() fails with I2CDONE timeout error
(-5).
> >
> > This is both good news and bad news. The good news is the first 0xFF
reply.
> > At the very least it means that the MCU has received the command and
> > successfully verified the checksum. The failure of the second read_dst()
> > probably means that the command is not supported or that the MCU has
tried
> > to communicate with non-existent CI module and failed.
>
> There may also be some timing problem in the driver.
>
> > The bad news is I don't know what to do next. DST describes itself as
DVB-S
> > (QAM) frontend while my card is DVB-T (COFDM). The parameters for QAM
> > and COFDM tuners are obviously different and it looks like the format of
> > the i2c "write tuner" command is also different. I'm trying to extract
> > this info from the other OS drivers and I feel I'm getting more and more
> > bogged down in it. Any suggestings appreciated.
>
> Dmitri,
>
> The twinhan support person should be back since 16th.
>
> Sending you her contact details again (was in previous email).
>
> Jamie
>
>
> --
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