Re: DVBSky T980C CI issues (kernel 4.0.x)

[Torbjorn Jansson <torbjorn.jansson@mbox200.swipnet.se>]

Perfect.
Looks like i have some more testing to do in the next few days.

something else, when testing my 4650 card i cant get it to tune properly 
to dvb-t2 muxes.
but i'm not yet sure if this is a driver issue or if i made a mistake 
with the tuning parameters since the file i use that came with the dvbv5 
programs was missing the t2 mux so i had to put that one in manually.

so more testing is needed first and with your patch for the T980C card i 
can probably test both things at the same time.


On 2016-02-16 21:20, Olli Salonen wrote:
> Hi all,
>
> Found the issue and submitted a patch.
>
> The I2C buses for T980C/T2-4500CI were crossed when CI registration
> was moved to its own function.
>
> Cheers,
> -olli
>
> On 31 January 2016 at 10:55, Torbjorn Jansson
> <torbjorn.jansson@mbox200.swipnet.se> wrote:
>> this ci problem is the reason i decided to buy the CT2-4650 usb based device
>> instead.
>> but the 4650 was a slightly newer revision needing a patch i submitted
>> earlier.
>> and also this 4650 device does not have auto switching between dvb-t and t2
>> like the dvbsky card have, so i also need an updated version of mythtv.
>>
>> my long term wish is to not have to patch things or build custom kernels or
>> modules.
>> so anything done to improve the dvbsky card or the 4650 is much appreciated.
>>
>>
>> On 2016-01-28 20:42, Olli Salonen wrote:
>>>
>>> Hi Jürgen & Mauro,
>>>
>>> I did bisect this and it seems this rather big patch broke it:
>>>
>>> 2b0aac3011bc7a9db27791bed4978554263ef079 is the first bad commit
>>> commit 2b0aac3011bc7a9db27791bed4978554263ef079
>>> Author: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
>>> Date:   Tue Dec 23 13:48:07 2014 -0200
>>>
>>>       [media] cx23885: move CI/MAC registration to a separate function
>>>
>>>       As reported by smatch:
>>>           drivers/media/pci/cx23885/cx23885-dvb.c:2080 dvb_register()
>>> Function too hairy.  Giving up.
>>>
>>>       This is indeed a too complex function, with lots of stuff inside.
>>>       Breaking this into two functions makes it a little bit less hairy.
>>>
>>>       Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
>>>
>>> It's getting a bit late, so I'll call it a day now and have a look at
>>> the patch to see what goes wrong there.
>>>
>>> Cheers,
>>> -olli
>>>
>>> On 28 January 2016 at 20:57, Jurgen Kramer <gtmkramer@xs4all.nl> wrote:
>>>>
>>>> Hi Olli,
>>>>
>>>> On Thu, 2016-01-28 at 19:26 +0200, Olli Salonen wrote:
>>>>>
>>>>> Hi Jürgen,
>>>>>
>>>>> Did you get anywhere with this?
>>>>>
>>>>> I have a clone of your card and was just starting to look at this
>>>>> issue. Kernel 3.19 seems to work ok, but 4.3 not. Did you have any
>>>>> time to try to pinpoint this more?
>>>>
>>>> No, unfortunately not. I have spend a few hours adding printk's but it
>>>> did not get me any closer what causes the issue. This really needs
>>>> investigation from someone who is more familiar with linux media.
>>>>
>>>> Last thing I tried was the latest (semi open) drivers from dvbsky on a
>>>> 4.3 kernel. Here the CI and CAM registered successfully.
>>>>
>>>> Greetings,
>>>> Jurgen
>>>>
>>>>> Cheers,
>>>>> -olli
>>>>>
>>>>> On 12 September 2015 at 10:02, Jurgen Kramer <gtmkramer@xs4all.nl>
>>>>> wrote:
>>>>>>
>>>>>> On Fri, 2015-09-11 at 22:01 +0200, Torbjorn Jansson wrote:
>>>>>>>
>>>>>>> On 2015-08-23 19:50, Jurgen Kramer wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sun, 2015-07-12 at 12:38 +0200, Jurgen Kramer wrote:
>>>>>>>>>
>>>>>>>>> I have been running a couple of DVBSky T980C's with CIs with
>>>>>>>>> success
>>>>>>>>> using an older kernel (3.17.8) with media-build and some
>>>>>>>>> added patches
>>>>>>>>> from the mailing list.
>>>>>>>>>
>>>>>>>>> I thought lets try a current 4.0 kernel to see if I no longer
>>>>>>>>> need to be
>>>>>>>>> running a custom kernel. Everything works just fine except
>>>>>>>>> the CAM
>>>>>>>>> module. I am seeing these:
>>>>>>>>>
>>>>>>>>> [  456.574969] dvb_ca adapter 0: Invalid PC card inserted :(
>>>>>>>>> [  456.626943] dvb_ca adapter 1: Invalid PC card inserted :(
>>>>>>>>> [  456.666932] dvb_ca adapter 2: Invalid PC card inserted :(
>>>>>>>>>
>>>>>>>>> The normal 'CAM detected and initialised' messages to do show
>>>>>>>>> up with
>>>>>>>>> 4.0.8
>>>>>>>>>
>>>>>>>>> I am not sure what changed in the recent kernels, what is
>>>>>>>>> needed to
>>>>>>>>> debug this?
>>>>>>>>>
>>>>>>>>> Jurgen
>>>>>>>>
>>>>>>>> Retest. I've isolated one T980C on another PC with kernel
>>>>>>>> 4.1.5, still the same 'Invalid PC card inserted :(' message.
>>>>>>>> Even after installed today's media_build from git no
>>>>>>>> improvement.
>>>>>>>>
>>>>>>>> Any hints where to start looking would be appreciated!
>>>>>>>>
>>>>>>>> cimax2.c|h do not seem to have changed. There are changes to
>>>>>>>> dvb_ca_en50221.c
>>>>>>>>
>>>>>>>> Jurgen
>>>>>>>>
>>>>>>>
>>>>>>> did you get it to work?
>>>>>>
>>>>>>
>>>>>> No, it needs a thorough debug session. So far no one seems able to
>>>>>> help...
>>>>>>
>>>>>>> i got a dvbsky T980C too for dvb-t2 reception and so far the only
>>>>>>> drivers that have worked at all is the ones from dvbsky directly.
>>>>>>>
>>>>>>> i was very happy when i noticed that recent kernels have support
>>>>>>> for it
>>>>>>> built in but unfortunately only the modules and firmware loads
>>>>>>> but then
>>>>>>> nothing actually works.
>>>>>>> i use mythtv and it complains a lot about the signal, running
>>>>>>> femon also
>>>>>>> produces lots of errors.
>>>>>>>
>>>>>>> so i had to switch back to kernel 4.0.4 with mediabuild from
>>>>>>> dvbsky.
>>>>>>>
>>>>>>> if there were any other dvb-t2 card with ci support that had
>>>>>>> better
>>>>>>> drivers i would change right away.
>>>>>>>
>>>>>>> one problem i have with the mediabuilt from dvbsky is that at
>>>>>>> boot the
>>>>>>> cam never works and i have to first tune a channel, then remove
>>>>>>> and
>>>>>>> reinstert the cam to get it to work.
>>>>>>> without that nothing works.
>>>>>>>
>>>>>>> and finally a problem i ran into when i tried mediabuilt from
>>>>>>> linuxtv.org.
>>>>>>> fedora uses kernel modules with .ko.xz extension so when you
>>>>>>> install the
>>>>>>> mediabuilt modulels you get one modulename.ko and one
>>>>>>> modulename.ko.xz
>>>>>>>
>>>>>>> before a make install from mediabuild overwrote the needed
>>>>>>> modules.
>>>>>>> any advice on how to handle this now?
>>>>>>>
>>>>>>>