Re: [linux-sunxi] tv-in documentation from allwinner?

2015-05-28 Thread Henrik Nordström
tis 2015-05-26 klockan 01:26 -0700 skrev Andrea Venturi:


 but i suppose the first poster talked about the PAL input interface;
 BTW it seem there's a source code driver on Android SDK?
 
 http://www.cubieforums.com/index.php?topic=1205.0

Ah, excellent!

Regards
Henrik


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Re: [linux-sunxi] tv-in documentation from allwinner?

2015-05-28 Thread Henrik Nordström
tis 2015-05-26 klockan 12:06 +1000 skrev Julian Calaby:

 I must point out that the TVIN subsystem consists of two parts, one
 which (apparently) decodes analogue (composite?) signals and one which
 decodes DVB (Transport Stream) digital TV.

The MPEG-TS (DVB) and TV-IN (Analog) subsystems are completely separate,
not sharing anything other than being in the same SoC package.

 As far as I'm aware, no viable driver exists for either part, no
 documentation exists and nobody is working on either of them at the
 moment.

There is quite a bit of documentation on the MPEG-TS part. And some
people have been looking into writing a driver, but lack of commonly
available hardware to develop on slows things down.

The TV-IN part do not have any documentation that I know of. Even
missing from most hardware pinout documents.

Not sure if I have seen any binary Allwinner drivers for either, even
less any source code.

 If you must have TV input now, I recommend getting a USB TV decoder.

Yes. That is undoubtedly the fastest path to get something running.

The MPEG-TS and TV-IN options is very interesting if you are building a
TV box using Allwinner CPU. In which case you probably have a support
contact at Allwinner to ask, but might also be bound by NDA agreements
and not able to do anything..

Regards
Henrik

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Re: [linux-sunxi] tv-in documentation from allwinner?

2015-05-26 Thread Andrea Venturi


On Tuesday, May 26, 2015 at 4:07:00 AM UTC+2, Julian Calaby wrote:

 Hi Euge, 

 On Tue, May 26, 2015 at 3:24 AM, euge sobrino eu...@pcbya.com 
 javascript: wrote: 
  I need to decode a analog signal, but i cannot see any reference nor 
  documentation of the 4 TVIN pins of A20.  I Even see cubietruck has the 
  connector attached but no references. Am I missing anything or is 
 another 
  undocumented stuff from allwinner. 

 It's almost completely undocumented and there is no upstream driver for 
 it. 

 This seems to be one of the few references of people working on it: 
 http://www.cubieforums.com/index.php?topic=1064.0 

 I must point out that the TVIN subsystem consists of two parts, one 
 which (apparently) decodes analogue (composite?) signals and one which 
 decodes DVB (Transport Stream) digital TV. 

 As far as I'm aware, no viable driver exists for either part,



The Transport Stream interface (present in A10 A20 and H3 at least..)  is 
someway  documented:

http://dl.linux-sunxi.org/A10/A10%20Transport%20Stream%20Controller%20V1.00%2020120917.pdf

..and some kind of driver support has been implemented at least for legacy 
3.4 sunxi:

https://groups.google.com/forum/#!topic/linux-sunxi/Ogd-wXlhfMU

but i suppose the first poster talked about the PAL input interface; BTW it 
seem there's a source code driver on Android SDK?

http://www.cubieforums.com/index.php?topic=1205.0

i've not checked.. 

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[linux-sunxi] tv-in documentation from allwinner?

2015-05-25 Thread euge sobrino
I need to decode a analog signal, but i cannot see any reference nor
documentation of the 4 TVIN pins of A20.  I Even see cubietruck has the
connector attached but no references. Am I missing anything or is another
undocumented stuff from allwinner.

Thanks

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Re: [linux-sunxi] tv-in documentation from allwinner?

2015-05-25 Thread Julian Calaby
Hi Euge,

On Tue, May 26, 2015 at 3:24 AM, euge sobrino e...@pcbya.com wrote:
 I need to decode a analog signal, but i cannot see any reference nor
 documentation of the 4 TVIN pins of A20.  I Even see cubietruck has the
 connector attached but no references. Am I missing anything or is another
 undocumented stuff from allwinner.

It's almost completely undocumented and there is no upstream driver for it.

This seems to be one of the few references of people working on it:
http://www.cubieforums.com/index.php?topic=1064.0

I must point out that the TVIN subsystem consists of two parts, one
which (apparently) decodes analogue (composite?) signals and one which
decodes DVB (Transport Stream) digital TV.

As far as I'm aware, no viable driver exists for either part, no
documentation exists and nobody is working on either of them at the
moment.

If you must have TV input now, I recommend getting a USB TV decoder.
Otherwise you might be able to get something working from the hints on
the link above.

Thanks,

-- 
Julian Calaby

Email: julian.cal...@gmail.com
Profile: http://www.google.com/profiles/julian.calaby/

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