linux-kernel - Re: Nokia N9: fun with camera

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Message-ID: <20171101063655.GA16895@amd>
Date:   Wed, 1 Nov 2017 07:36:55 +0100
From:   Pavel Machek <pavel@....cz>
To:     Sakari Ailus <sakari.ailus@....fi>
Cc:     Hans Verkuil <hverkuil@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        pali.rohar@...il.com, sre@...nel.org,
        kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
        aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
        patrikbachan@...il.com, serge@...lyn.com, abcloriens@...il.com,
        linux-media@...r.kernel.org
Subject: Re: Nokia N9: fun with camera

Hi!

> Sakari, I am actually playing with N9 camera, not N950. That comes
> next.
> 
> And the clock error I mentioned ... seems to be
> -EPROBE_DEFER. So... not an issue.

Hmm, and with similar config, I got N950 to work. ... which should
give me enough clues to get N9 to work. I guess I forgot to reset the
pipeline between the tries, or something.

For the record, this got me some data on n950:

 m.media_ctl( [ '-f', '"OMAP3 ISP CSI2a":0 [fmt:%s/%dx%d]' % (m.fmt, m.cap_x, m.cap_y) ] )
 m.media_ctl( [ '-l', '"OMAP3 ISP CSI2a":1 -> "OMAP3 ISP CSI2a output":0[1]' ] )

 # WORKS!!!!
 # pavel@...0:~/g/tui/camera$ sudo /my/tui/yavta/yavta
 # --capture=8 --skip 0 --format SGRBG10 --size 4272x3016 /dev/video1 --file=/tmp/delme#

...ouch. It only worked twice :-(. Either driver gets confused by my
attempts, or it relied on some other initialization code. Strange.

Best regards,
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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