linux-kernel - Nokia N9: fun with camera

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Date:   Tue, 31 Oct 2017 22:28:12 +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: 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.

Strange thing is, that my sensors seems to have different resolution
from yours:

- entity 89: smiapp pixel_array 1-0010 (1 pad, 1 link)
             type V4L2 subdev subtype Sensor flags 0
	                  device node name /dev/v4l-subdev9
		          pad0: Source [fmt:SRGGB10_1X10/3572x2464 field:none
	                      crop.bounds:(0,0)/3572x2464 crop:(0,0)/3572x2464]
 ->
             "smiapp binner 1-0010":0 [ENABLED,IMMUTABLE]

(And you mentioned width 3600, and SGRBG10).

I updated my scripts accordingly. Now I get

pavel@...0:~/g/tui/camera$ /my/tui/yavta/yavta -c5 -f SRGGB10
-F/tmp/foo -s 3572x2464 /dev/video1
Device /dev/video1 opened.
Device `OMAP3 ISP CSI2a output' on `media' is a video capture (without
mplanes) device.
Video format set: SRGGB10 (30314752) 3572x2464 (stride 7144) field
none buffer size 17602816
Video format: SRGGB10 (30314752) 3572x2464 (stride 7144) field none
buffer size 17602816
2 buffers requested.
length: 17602816 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xb5cb1000.
length: 17602816 offset: 17604608 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xb4be7000.

...but here it hangs. (Kernel v4.13).

dmesg says:

[ 2862.229736] smiapp 1-0010: flip 0
[ 2862.229766] smiapp 1-0010: new pixel order RGGB
[ 2862.233764] smiapp 1-0010: 0x00021700 "min_frame_length_lines_bin"
= 166, 0xa6
[ 2862.234558] smiapp 1-0010: 0x00021702 "max_frame_length_lines_bin"
= 65535, 0xffff
[ 2862.235351] smiapp 1-0010: 0x00021704 "min_line_length_pck_bin" =
3812, 0xee4
[ 2862.236114] smiapp 1-0010: 0x00021706 "max_line_length_pck_bin" =
32752, 0x7ff0
[ 2862.238067] smiapp 1-0010: 0x00021708 "min_line_blanking_pck_bin" =
240, 0xf0
[ 2862.240844] smiapp 1-0010: 0x0002170a
"fine_integration_time_min_bin" = 0, 0x0
[ 2862.242553] smiapp 1-0010: 0x0002170c
"fine_integration_time_max_margin_bin" = 0, 0x0
[ 2862.242614] smiapp 1-0010: vblank   	 26
[ 2862.242645] smiapp 1-0010: hblank		240
[ 2862.242675] smiapp 1-0010: real timeperframe	100/839

I did some more experiments, but could not grab a frame.

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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