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Subject: Re: [BUG] STV0299 has bogus CAN_INVERSION_AUTO flag
To: Johann Klammer <klammerj@a1.net>, linux-media@vger.kernel.org
References: <55DB3608.5010906@a1.net> <55E2D2A8.5010607@gmail.com>
 <55E31C40.6000409@a1.net>
Cc: hverkuil@xs4all.nl
From: Malcolm Priestley <tvboxspy@gmail.com>
Message-ID: <55E347FC.2090702@gmail.com>
Date: Sun, 30 Aug 2015 19:14:20 +0100
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On 30/08/15 16:07, Johann Klammer wrote:
> On 08/30/2015 11:53 AM, Malcolm Priestley wrote:
>> On 24/08/15 16:19, Johann Klammer wrote:
>>> from gdb dump:
>>> [...]
>>> info = {
>>>         name = "ST STV0299 DVB-S", '\000' <repeats 111 times>, type = FE_QPSK,
>>>         frequency_min = 950000, frequency_max = 2150000,
>>>         frequency_stepsize = 125, frequency_tolerance = 0,
>>>         symbol_rate_min = 1000000, symbol_rate_max = 45000000,
>>>         symbol_rate_tolerance = 500, notifier_delay = 0,
>>>         caps = (FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | FE_CAN_QPSK)},
>>> [...]
>>>
>>> when tuning:
>>> [...]
>> Hi
>> ..
>>> [331020.207352] stv0299 does not support auto-inversion
>>> [331020.507480] stv0299 does not support auto-inversion
>>> [331020.807610] stv0299 does not support auto-inversion
>>> [331021.107747] stv0299 does not support auto-inversion
>>> [...]
>>> (but how the heck should I know?)
>>
>> I am using the stv0299 with no problems at all, the code hasn't changed much in years. I am using linux 4.2-rc6
>> boot/vmlinuz-4.1.0-1-586
>
> Something must have changed. I updated kernel and got those messages.
> I did not get then before. The vmlinuz.old
> points to: boot/vmlinuz-3.14.15
> vmlinuz points to: boot/vmlinuz-4.1.0-1-586
> (debian testing binary .deb)
>
>> You shouldn't be getting that message as dvb core does the auto inversion for the driver.
> It may have been exposed by trying oneshot tuning mode... not sure...

Yes, it is with setting oneshot.

Looks like the FE_CAN_INVERSION_AUTO flag is only bogus in 
FE_TUNE_MODE_ONESHOT mode.

Obversely don't set INVERSION_AUTO bearing in mind when you do it 
manually you have to tune first with it off and if that fails again with 
it on.

Regards


Malcolm