Re: [patch] Fix AF9015 Dual tuner i2c write failures

[Antti Palosaari <crope@iki.fi>]

On 04/02/2011 04:45 PM, adq wrote:
> 2011/4/2 Antti Palosaari<crope@iki.fi>:
>> On 04/02/2011 02:06 PM, adq wrote:
>>>
>>> 2011/4/2 Antti Palosaari<crope@iki.fi>:
>>>>
>>>> On 04/02/2011 04:24 AM, adq wrote:
>>>>>
>>>>> Hi, just been trying it out, with no success. On my test machine, FE0
>>>>> no longer tunes, but FE1 is still fine, so I've just been testing FE0.
>>>>
>>>> You try to say other frontend / tuner is physically dead? Which one?
>>>
>>> No no - I can revive it by simply unplugging and replugging the
>>> device, but I was avoiding doing that to see if we could either track
>>> down something erroneous, or be able to reset it from software.
>>>
>>> It'd be /really/ handy if they'd connected that reset tuner GPIO :(
>>> There isn't a way to completely reset the device from software I take
>>> it? Or any other GPIOs hanging about I could test with?
>>
>> There is few I know, USB command 0x13 boots AF9015 somehow, USB command 0x5a
>> reconnects it from USB bus. But most interesting one is demodulator reset
>> register 0xe205, write 1 to that reg should reset it.
>
> Just tried writing 1 to 0xe205 - no change.

OK.

> Looks like USB commands 0x13/0x5a will be done as part of a normal
> module reload? (In which case it doesn't fix it).
>
> I can actually reboot the machine completely, and the problem stays!
> Only physically unplugging the device sorts it.

You are correct. I don't have any idea anymore. Only is wish to know if 
that happens in Windows too.

Antti

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