Re: DM1105: could not attach frontend 195d:1105

[Matt Vickers <m@vicke.rs>]

On 1/02/2011 6:55 a.m., Igor M. Liplianin wrote:
> В сообщении от 31 января 2011 11:33:54 автор Matt Vickers написал:
>> On 23/10/2010 10:20 p.m., Igor M. Liplianin wrote:
>>> В сообщении от 10 марта 2010 14:15:49 автор Hendrik Skarpeid написал:
>>>> Igor M. Liplianin skrev:
>>>>> On 3 марта 2010 18:42:42 Hendrik Skarpeid wrote:
>>>>>> Igor M. Liplianin wrote:
>>>>>>> Now to find GPIO's for LNB power control and ... watch TV :)
>>>>>> Yep. No succesful tuning at the moment. There might also be an issue
>>>>>> with the reset signal and writing to GPIOCTR, as the module at the
>>>>>> moment loads succesfully only once.
>>>>>> As far as I can make out, the LNB power control is probably GPIO 16
>>>>>> and 17, not sure which is which, and how they work.
>>>>>> GPIO15 is wired to tuner #reset
>>>>> New patch to test
>>>> I think the LNB voltage may be a little to high on my card, 14.5V and
>>>> 20V. I would be a little more happy if they were 14 and 19, 13 and 18
>>>> would be perfect.
>>>> Anyways, as Igor pointet out, I don't have any signal from the LNB,
>>>> checked with another tuner card. It's a quad LNB, and the other outputs
>>>> are fine. Maybe it's' toasted from to high supply voltage! I little word
>>>> of warning then.
>>>> Anyways, here's my tweaked driver.
>>> Here is reworked patch for clear GPIO's handling.
>>> It allows to support I2C on GPIO's and per board LNB control through
>>> GPIO's. Also incuded support for Hendrik's card.
>>> I think it is clear how to change and test GPIO's for LNB and other stuff
>>> now.
>>>
>>> To Hendrik:
>>> 	Not shure, but there is maybe GPIO for raise/down LNB voltage a little
>>> 	(~1v). It is used for long coaxial lines to compensate voltage
>>> 	dropping.
>>>
>>> Signed-off-by: Igor M. Liplianin<liplianin@me.by>
>> Hi Igor,
>>
>> I have a brandless DVB-S tv tuner card also, with a dm1105n chip. I was
>> getting the "DM1105: could not attach frontend 195d:1105" message with
>> the latest kernel also, but I applied this patch to the dm1105 module
>> and now the card's being recognised  (though is still listed as an
>> ethernet controller with lspci)
>>
>> My dmesg output is:
>>
>> dm1105 0000:01:05.0: PCI INT A ->  GSI 17 (level, low) ->  IRQ 17
>> DVB: registering new adapter (dm1105)
>> dm1105 0000:01:05.0: MAC 00:00:00:00:00:00
>> DVB: registering adapter 0 frontend 0 (SL SI21XX DVB-S)...
>> Registered IR keymap rc-dm1105-nec
>> input: DVB on-card IR receiver as
>> /devices/pci0000:00/0000:00:1e.0/0000:01:05.0/rc/rc0/input6
>> rc0: DVB on-card IR receiver as
>> /devices/pci0000:00/0000:00:1e.0/0000:01:05.0/rc/rc0
>>
>> The card is one of these:
>> http://www.hongsun.biz/ProView.asp?ID=90
>>
>> Scanning doesn't appear to give me any results.  Should this be working?
>>    Anything I can do to test the card out for you?
>>
>> Cheers,
>> Matt.
> Hi Matt,
> Is there any label on tuner can?
> Have you a close look picture of PCB ?
>
> Cheers,
> Igor.

Hi Igor,

The label on the tuner can is SP1514LHb S1009, so I'm guessing this is a 
near-identical card to the one that Paul was asking you about in January 
of last year, e.g:

>  1: DVB-S
>  5: 16cc
>  1: Unsure, but it has an LNB in and an LNB out, so I guess it does have
>  loop through?
>  4: Si2109
>  L: Si labs
>  H: Horizontal
>  b: Lead free

Here are two images I took of the card:

A view of the entire board:

http://matt.vicke.rs/pics/pcb_full.jpg

And here is a closer view of the board between the tuner and the dm1105n 
chip.

http://matt.vicke.rs/pics/pcb_detail.jpg

With your patch and the card=4 parameter the card is recognised, and the 
dvb device created. Scanning will run (I'm attempting to locate channels 
on Optus D1, which I can successfully scan using a set top box, so the 
dish is correctly aligned), but the card reports tuning failed on all of 
the Optus D1 frequencies that I attempt. I also tried running w_scan but 
had no success.

Cheers,
Matt.

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