[linux-dvb] Fw: Re: Avermedia A312 wiki page

Daniel Perzynski Daniel.Perzynski at aster.pl
Thu Dec 11 23:49:18 CET 2008



-----Original Message-----
From: Devin Heitmueller [mailto:devin.heitmueller at gmail.com] 
Sent: Wednesday, December 10, 2008 10:51 PM
To: Daniel Perzynski
Cc: linux-dvb at linuxtv.org
Subject: Re: [linux-dvb] Fw: Re: Avermedia A312 wiki page

On Wed, Dec 10, 2008 at 4:36 PM, Daniel Perzynski
<Daniel.Perzynski at aster.pl> wrote:
> -----Original Message-----
> From: Devin Heitmueller [mailto:devin.heitmueller at gmail.com]
> Sent: Wednesday, December 10, 2008 10:22 PM
> To: Daniel Perzynski
> Cc: linux-dvb at linuxtv.org
> Subject: Re: [linux-dvb] Fw: Re: Avermedia A312 wiki page
>
> On Wed, Dec 10, 2008 at 4:00 PM, Daniel Perzynski
> <Daniel.Perzynski at aster.pl> wrote:
>> Hi Devin,
>>
>> Which repository should I use then?
>> I do understand that USB bridge (CY7C68013A) has to be activated.
>> As far as I'm aware that bridge is supported in v4l-dvb drivers but not
as
> a
>> standalone module but rather as a part of other 'main' modules like cx88.
>> The question is if my components are generally supported why are not
>> recognized during modprobe 'modulename' process?
>> Maybe I have to modify the source and add USB id of my card to certain
>> modules?
>>
>> I would like to start with analog first.
>>
>> Regards,
>>
>> -----Original Message-----
>> From: Devin Heitmueller [mailto:devin.heitmueller at gmail.com]
>> Sent: Monday, December 08, 2008 11:22 PM
>> To: daniel. perzynski
>> Cc: linux-dvb at linuxtv.org
>> Subject: Re: [linux-dvb] Fw: Re: Avermedia A312 wiki page
>>
>> On Mon, Dec 8, 2008 at 5:10 PM, daniel. perzynski
>> <daniel.perzynski at aster.pl> wrote:
>>> Hi,
>>>
>>> I'm asking again for more help as I haven't received any response to
>>> my previous e-mail pasted below. I've tried to run
>>> SniffUSB-x64-2.0.0006.zip but is not working under vista :( I've also
>>> found that card is using merlinb.rom and merlinc.rom (they are listed
>>> in device manager in windows vista)
>>>> I've tried to load all v4l modules (one by one) in 2.6.27.4 kernel -
>>>> nothing in syslog :( I've then compiled and tried to load lgdt330x,
>>>> cx25840,tuner-xc2028 and
>>>> wm8739 from http://linuxtv.org/hg/v4l-dvb mercurial repository -
>>>> nothing in syslog :(
>>>>
>>>> At the end I've used http://linuxtv.org/hg/v4l-dvb-experimental
>>>> repository and when doing:
>>>>
>>>> insmod em28xx_cx25843, I've received :) Nov 30 21:43:54 h3xu5
>>>> cx25843.c: starting probe for adapter SMBus
>>>> I801
>>>> adapter at 1200 (0x40004)
>>>> Nov 30 21:43:54 h3xu5 cx25843.c: detecting cx25843 client on address
>>>> 0x88
>>>>
>>>> It is a small progress and I need even more help here. There is a
>>>> question if I'm doing everything right? Do I need to load the modules
>>>> with parameters? Why I need to do next to help in creation of working
>>>> solution for that A312 card?
>>>
>>> Regards,
>>
>> Hello Daniel,
>>
>> Don't use http://linuxtv.org/hg/v4l-dvb-experimental, that's a very old
>> repository.
>>
>> Just loading the modules does nothing.  They won't do anything unless
they
>> know about your hardware.
>>
>> I would start with the bridge:  CY7C68013A
>>
>> You need to get the bridge working before you can get any of the
> peripherals
>> working (such as the lgdt3304 demod, the 3028 tuner, or the cx25843
>> decoder).
>>
>> Once you have the bridge working, you can set the GPIOs to bring the
other
>> chips out of reset and then do i2c enumeration and device registration.
>>
>> Do you plan on doing analog support first or digital?
>>
>> Devin
>>
>> --
>> Devin J. Heitmueller
>> http://www.devinheitmueller.com
>> AIM: devinheitmueller
>
>> Hello Daniel,
>
>> Please don't top post - it's a violation of list policy.
>
>> You should use the v4l-dvb repository as your base.  The other
>> repositories are temporary clones of that repository that developers
>> used (or are using) to develop support for some new chipset.
>
>> You need to put your USB ID into the driver for the ez-usb fx2 driver,
>> so that driver will know to associate with your device.
>
>> Despite the various chips being supported, you still need to tell the
>> driver that your device contains these chips.  This is done by
>> registering your device's USB ID in the bridge driver, and then having
>> a profile within the bridge driver that tells the kernel which other
>> chips are used in your product.  This is the same regardless of
>> whether you're talking about a USB bridge like the Cyprus or a device
>> that includes a PCI bridge like the cx88.
>
>> Let's look at an example:  The HVR-950:
>
>> The HVR-950 includes an em2883 USB bridge, an xc3028 tuner, a tvp5150
>> analog decoder, and an lgdt3303 digital demodulator.  In order to make
>> that work, you would add an entry to em28xx-cards.c including the
>> hvr-950's USB ID, and in the device profile you would indicate that it
>> contains the tvp5150 and xc3028.  You would also have to configure any
>> GPIOs so that the em2883 can bring the other chips out of reset.  For
>> digital support, you would need to change em28xx-dvb.c to indicate
>> that the HVR-950 contains an lgdt3303 and provide the required
>> configuration parameters for how that chip is wired up in that
>> product.
>
>> For your product, you need to do basically the same thing.
>>
>> --
>> Devin J. Heitmueller
>> http://www.devinheitmueller.com
>> AIM: devinheitmueller
>
> Hi,
>
> Sorry for top post :(
>
> What is the name of the source file for ez-usb fx2 driver (to which as I
> understand I have to add my USB device id)?

I would have to look at the source and I don't have access to it right
now.  I would recommend you grep the tree for "Cyprus" or "fx2"

> 'For your product, you need to do basically the same thing' - do you want
me
> to add information about my card and its
> device profile to em28xx-cards.c for analog TV and to em28xx-dvb.c for
> Digital?
>

> No, I was using that as an example.  The em28xx is a different USB
> bridge.  You would want to register your USB ID with the CY7C68013A
> driver.
>
> Devin
>
> -- 
> Devin J. Heitmueller
> http://www.devinheitmueller.com
> AIM: devinheitmueller

Hi Devin,

There is no CY7C68013A driver. Cypress fx2 bus is mentioned for example in
cxusb.c file. In dvb-usb-ids.h I probably need to add my card USB id and
description.
Cxusb.c is including lgdt330x.h ( I have lgdt3304), tuner-xc2028.h (probably
that driver is supporting xc3028 also) and cx25840 is mentioned in the code
also. Looks like the proper candidate to modify that source to provide
support for my card.

Please let me know if my thinking is correct.

Regards, 
 




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