[linux-dvb] [PATCH] Mantis Bug (was Technisat HD2 cannot szap/scan)

gimli gimli at dark-green.com
Mon Jan 5 17:45:48 CET 2009


Hi,

with your patch i run into following problem on a Terratec Cinergy S2 PCI
HD :

[  143.818103] stb6100_set_frequency: Frequency=1588000
[  143.826681] stb6100_get_frequency: Frequency=1587990
[  143.840867] stb6100_get_bandwidth: Bandwidth=10000000
[  150.568018] mantis_ack_wait (0): Slave RACK Fail !
[  150.568372] stb6100_set_bandwidth: Invalid parameter
[  156.596525] mantis_ack_wait (0): Slave RACK Fail !
[  156.596880] stb6100_get_bandwidth: Invalid parameter
[  162.784014] mantis_ack_wait (0): Slave RACK Fail !
[  162.784368] stb6100_get_bandwidth: Invalid parameter
[  168.848014] mantis_ack_wait (0): Slave RACK Fail !
[  168.848368] stb6100_set_frequency: Invalid parameter
[  174.896016] mantis_ack_wait (0): Slave RACK Fail !
[  174.896371] stb6100_get_frequency: Invalid parameter

cu

Edgar (gimli) Hucek

>> With the Azurewave AD-SP400 (Twinhan VP-1041 / Technisat HD2 /
>> ?poss. Terratec Cinergy S2 PCI HD)
>> there seems to be a driver bug when tuning some channels immediately
>> after boot or after resuming from sleep (which is entered after 1 minute
>> idle).
>> So the initialisation seems to be unsuitable for tuning some channels.
>>
>> But... if another channel is tuned successfully first then the bad
>> channels *CAN* be tuned
>> (if you are quick and do it before it sleeps again).
>>
>> It looks like the problem channels are all horizontal but perhaps other
>> parameters are
>> relevant too/instead.
>>
>> Can anyone help?
>> Instructions for reproducing the problem on Astra 19.2E or Hotbird 13.0E
>> are below.
>>
>> I don't know whether the problem is in the mantis, stb0899, stb6100 or
>> lnbp21 code.
>
> Problem solved with the patch below.
>
> I found that both problems tuning channels (#1 immediately after boot and
> #2 after sleep) are
> caused by the lnbp21 voltage OFF setting. To fix #1: the LNB voltage needs
> to be turned on when
> the lnbp21 is attached, and to fix #2: turning the voltage off on sleep
> needs to be disabled.
>
> To keep the voltage on, we need to make sure that register bit LNBP21_EN
> is always set.
>
> I note that as well as controlling the voltage regulator blocks this
> register bit also controls
> a loopthrough switch -- clearing the bit takes the lnbp21 out of the LNB
> line, which could be
> used to allow other circuitry to do LNB power and control. I don't have
> any info on how the
> card is actually wired. It seems best to keep the EN bit always set,
> because I know clearing
> it causes trouble.
>
> It turns out there is already a mechanism for specifying register bits to
> be overridden in
> the lnbp21 attach call (already used for another card) and we just need to
> apply the following
> one-line patch to the VP-1041 attach.
>
> This is against the repository at
> http://mercurial.intuxication.org/hg/s2-liplianin.
>
> Signed-off-by: Hans Werner <hwerner4 at gmx.de>
>
> diff -r 28324bc3d694 linux/drivers/media/dvb/mantis/mantis_dvb.c
> --- a/linux/drivers/media/dvb/mantis/mantis_dvb.c
> +++ b/linux/drivers/media/dvb/mantis/mantis_dvb.c
> @@ -239,7 +239,7 @@ int __devinit mantis_frontend_init(struc
>                         vp1041_config.demod_address);
>
>                         if (stb6100_attach(mantis->fe,
> &vp1041_stb6100_config, &mantis->adapter)) {
> -                               if (!lnbp21_attach(mantis->fe,
> &mantis->adapter, 0, 0)) {
> +                               if (!lnbp21_attach(mantis->fe,
> &mantis->adapter, LNBP21_EN, 0)) {
>                                         printk("%s: No LNBP21 found!\n",
> __FUNCTION__);
>                                         mantis->fe = NULL;
>                                 }
>
>
>
> Regards,
> Hans
>
>>
>> > > When it goes into sleep mode I see the following in dmesg:
>> > > [  522.821625] _stb0899_read_reg: Reg=[0xf12a], data=58
>>
>> >
>> > >
>> > > [  522.821632] stb0899_i2c_gate_ctrl: Disabling I2C Repeater ...
>>
>> >
>> > >
>> > > [  522.821634] stb0899_write_regs [0xf12a]: 58
>>
>> >
>> > >
>> > > [  522.822681] stb0899_sleep: Going to Sleep .. (Really tired ..
>> :-))
>> > >
>> > > So the Twinhan 1041 is quite useless for me at the moment.
>> >
>> > Try the following channels.conf for Astra at 19.2E:
>> >
>> > TVEi;CANALSATELLITE:11567:vS0C56M2:S19.2E:22000:58:59:61:0:9022:1:1024:0
>> >
>> ZDF;ZDFvision:11953:hS0C34M2:S19.2E:27500:110:120=deu,121=2ch;125=deu:130:0:28006:1:1079:0
>> >
>> > Then do the following (in this order):
>> > 0. point dish to 19.2E.
>> > 1. tune to TVEi
>> > szap-s2 -a 0 -r -p -V -c ~/channels.conf.astra1 "TVEi;CANALSATELLITE"
>> >
>> > 2. hit ctrl-c, and wait 1 minute until the frontend sleeps (check
>> dmesg)
>> >
>> > 3. try to tune to ZDF. It FAILS (hangs).
>> > szap-s2 -a 0 -r -p -V -c ~/channels.conf.astra1 "ZDF;ZDFvision"
>> >
>> > 4. ctrl-c and then szap-s2 to TVEi. That WORKS.
>> >
>> > 5. ctrl-c and then quickly (before sleep) szap-s2 to ZDF. Now it WORKS
>> > too.
>> > You can keep changing to other channels provided that it is not
>> allowed
>> to
>> > get into a sleep.
>> >
>> > Similar problems are seen using scan-s2 instead of szap-s2.
>>
>>
>> For Hotbird try the following channels.conf.hotbird:
>>
>> BBC World News:12596:vS0C34M2:S13.0E:27500:163:92:41:0:8204:318:9400:0
>> Nile
>> News:12539:hS0C34M2:S13.0E:27500:1185+1184:1187=ara:0:0:8983:318:9100:0
>> Toscana Channel:11541:vS0C56M2:S13.0E:22000:521:522:0:0:3622:200:1800:0
>> ZDF:11054:hS0C56M2:S13.0E:27500:570:571=deu:572:0:8011:318:12700:0
>>
>> Then do the following (in this order):
>> 0. point dish to 13.0E.
>> 1. tune to Toscana Channel  (or BBC World News)
>> szap-s2 -a 0 -r -p -V -c ~/channels.conf.hotbird "Toscana Channel"
>>
>> 2. hit ctrl-c, and wait at least 1 minute until the frontend sleeps
>> (check
>> dmesg)
>>
>> 3. try to tune to Nile News (or ZDF). It FAILS (hangs with -r -p or
>> doesn't lock without those options).
>> szap-s2 -a 0 -r -p -V -c ~/channels.conf.hotbird "Nile News"
>>
>> 4. Do ctrl-c and then szap-s2 to Toscana Channel (or BBC World News).
>> That
>> WORKS.
>>
>> 5. Do ctrl-c and then quickly (before sleep) szap-s2 to Nile News (or
>> ZDF). Now it
>> WORKS too!
>> You can keep changing to other channels provided that it is not allowed
>> to
>> get into a sleep.
>>
>> Or even simpler:
>> just boot the computer (or sudo modprobe -r mantis && sudo modprobe
>> mantis)
>> and skip number 1 and number 2, i.e. do 0,3,4,5.
>>
>> > Can someone reproduce this? (or fix the problem ;-) ).
>>
>> Hans
> --
> Release early, release often.
>
> Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen:
> http://www.gmx.net/de/go/multimessenger
>
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