Re: [RFC] solo6x10 freeze, even with Oct 31's linux-next... any ideas or help?

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On Sat, Nov 15, 2014 at 6:08 PM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote:
> Hi Andrey,
>
> On 11/15/2014 02:48 PM, Andrey Utkin wrote:
>> Thanks to all for the great help so far, but I've got another issue
>> with upstream driver.
>>
>> In upstream there's no more module parameter for video standard
>> (NTSC/PAL). But there's VIDIOC_S_STD handling procedure. But it turns
>> out not to work correctly: the frame is offset, so that in the bottom
>> there's black horizontal bar.
>> The S_STD ioctl call actually makes difference, because without that
>> the frame "slides" vertically all the time. But after the call the
>> picture is not correct.
>
> That's strange. I know I tested it at the time. I assume it is the PAL
> standard that isn't working (as opposed to NTSC)? Or does it just always
> fail when you switch between the two standards?

Switching to PAL is not working (NTSC is default).
Not sure if it fails to make _any_ switching, or whether it fails to
switch between (hardcoded or switched) PAL to NTSC. I can test it a
bit later.

>>
>> Such change didn't help:
>> https://github.com/krieger-od/linux/commit/55b796c010b622430cb85f5b8d7d14fef6f04fb4
>> So, temporarily, I've hardcoded this for exact customer who uses PAL:
>> https://github.com/krieger-od/linux/commit/2c26302dfa6d7aa74cf17a89793daecbb89ae93a
>> rmmod/modprobe cycle works fine and doesn't make any difference from
>> reboot, but still it works correctly only with PAL hardcoded for the
>> first-time initialization.
>>
>> Any ideas why wouldn't it work to change the mode after the driver load?
>
> Not really. I will have to test this next week (either Monday or Friday) with
> my solo board.

Thanks in advance.

>> Would it be allowed to add back that kernel module parameter (the one
>> passed at module load time)?
>
> No. That's a hack, the S_STD call should just work and we need to figure out
> why it fails.

Ok.

-- 
Bluecherry developer.
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