Re: ATSC Tuner in KWorld PC120-U PCI Hybrid ATSC (17de:a134)

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Thanks,

I see the drivers for both TDA18271HDC2 and TDA8290 loaded.
I thought TDA18271HDC2 was the digital channel decoder, isn't it? Is
the "digital channel decoder" different from the digital tuner??
Should be looking for a different chip?

Based on these to chips, I added my card in  saa7134_tda8290_callback
to call saa7134_tda8290_18271_callback and here is the output of my
dmesg:
[  828.879454] dvb_init() allocating 1 frontend
[  829.180234] nxt200x: nxt200x_readbytes: i2c read error (addr 0x0a, err == -5)
[  829.180244] Unknown/Unsupported NXT chip: 00 00 00 00 00
[  829.180542] saa7133[0]/dvb: frontend initialization failed

Hooman

On Wed, Nov 24, 2010 at 7:21 PM, hermann pitton <hermann-pitton@xxxxxxxx> wrote:
>
> Hi,
>
> Am Dienstag, den 23.11.2010, 17:34 -0500 schrieb Hooman B.:
>> Hello!
>> I've been trying to get the ATSC tuner in my KWorld PC120-U PCI Hybrid
>> ATSC (17de:a134)
>> to work with the latest v4l drivers from source (in Ubuntu).
>>
>> Right now, everything [capture, analog, radio, even IR] works - except
>> the ATSC tuner (there is no
>> front-end device). But that's the one thing I need working :-(
>
> OK.
>
>> Here's the output of lspci -nnvv
>> ================================================================
>> 03:01.0 Multimedia controller [0480]: Philips Semiconductors
>> SAA7131/SAA7133/SAA7135 Video Broadcast Decoder [1131:7133] (rev d1)
>> Subsystem: KWorld Computer Co. Ltd. Device [17de:a134]
>> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
>> Stepping- SERR- FastB2B- DisINTx-
>> Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
>> <TAbort- <MAbort- >SERR- <PERR- INTx-
>> Latency: 255 (63750ns min, 63750ns max)
>> Interrupt: pin A routed to IRQ 16
>> Region 0: Memory at fdaff000 (32-bit, non-prefetchable) [size=2K]
>> Capabilities: <access denied>
>> Kernel driver in use: saa7134
>> Kernel modules: saa7134
>> ================================================================
>>
>> This is the most similar card that I forced in saa7134-cards.c:
>> ================================================================
>>         .vendor    = PCI_VENDOR_ID_PHILIPS,
>>         .device    = PCI_DEVICE_ID_PHILIPS_SAA7133,
>>         .subvendor  Â= 0x17de,
>>         .subdevice  Â= 0xa134,
>> Â Â Â Â Â Â Â Â .driver_data Â= SAA7134_BOARD_MSI_TVATANYWHERE_PLUS,
>> ================================================================
>>
>> The chips are : SAA7135HL/203 and TDA18271HDC2
>>
>
> Both variants of the MSI TV@nywhere Plus do not have any support for
> digital TV.
>
> You need to find out the type of digital channel decoder on your board
> at first.
>
> Then you check saa7134-dvb.c, if it is already supported on other cards.
>
> You have to investigate the details of how the channel decoder is
> employed, but with some luck can try with already supported cards.
>
> If i2c traffic locks up and chips disappear from the bus, a cold boot
> might be necessary to continue with testing.
>
> Cheers,
> Hermann
>
>
>
>
>
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