SheevaPlug non-standard module compiling

Howto compile a module for sheeva without standard kernel headers

I’ve bought an EasyCap DC60 and i’ve found this fantastic driver for it:

http://sourceforge.net/projects/easycapdc60/

Obviously they aren’t available for our sheevaplug so i’m looking through the web on how to compile it,finally I was able to do it, this is the howto.

We suppose that sheevaplug is already runnning with a http://sheeva.with-linux.com/sheeva kernel (in this example 2.6.33.2).
All the operations described here are executed on a standard i686 linux pc (debian).

We need a cross-compiler, so go to this page and download the latest arm-XXXXXX-arm-none-eabi-i686-pc-linux-gnu.tar.bz2:
http://www.codesourcery.com/downloads/public/public/gnu_toolchain/arm-none-eabi
(in this example we use 2009q3-68)

First of all we need packages for cross-compile it

cd /usr/src
wget http://www.codesourcery.com/downloads/public/public/gnu_toolchain/arm-none-eabi/arm-2009q3-68-arm-none-eabi-i686-pc-linux-gnu.tar.bz2
tar xzvf arm-2009q3-68-arm-none-eabi-i686-pc-linux-gnu.tar.bz2
apt-get install build-essential

Then download the standard kernel from kernel.org (nowadays marvell patch is included in the mainline kernel tree), and apply the config from http://sheeva.with-linux.com

cd /usr/src
wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.33.2.tar.bz2
tar xvf linux-2.6.33.2.tar.bz2
cd linux-2.6.33.2

wget http://sheeva.with-linux.com/sheeva/2.6.33.2/sheeva-2.6.33.2.config
cp sheeva-2.6.33.2.config .config
make ARCH=arm oldconfig

Now we can compile it, if you wouldn’t waste time you can stop it after the first “CC …” lines, when it has already done “HOSTCC/scripts …“, at this time it has already generated header needed by us. If you want you can also compile it all (better).

make -j4 ARCH=arm CROSS_COMPILE=../arm-2009q3/bin/arm-none-eabi-

In this example we try to compile easycap driver, but you can adapt it to any external modules:

cd /usr/src
wget “http://downloads.sourceforge.net/project/easycapdc60/easycap_dc60.0.7.1.tar.gz?use_mirror=netcologne”
cd easycap_dc60.0.7.1
make clean

Edit src/MakeFile (vi src/Makefile) and replace KERNELDIR line with this:

KERNELDIR ?= /usr/src/linux-2.6.33.2

and now compile it:

make -j4 ARCH=arm CROSS_COMPILE=/usr/src/arm-2009q3/bin/arm-none-eabi-

All done! 😉

scp 192.168.1.220:/usr/src/easycap_dc60.0.7.1/src/easycap.ko /lib/modules/`uname -r`/kernel/drivers/media/video
depmod -a

try to insmod it and enjoy 😉

Philip

16 January 2011 at 1:33 am · Reply

Interesting. What are your impressions of the Easycap? Could you post a captured frame with the easycap/sheevaplug combination? I’m looking to build a similar system.

Thanks

alan

23 March 2011 at 7:14 am · Reply

Hi, thanks for your tips on the non-standard compilation of easycap. It helps me alot.

Following your example, I have successfully cross-compiled easycap.ko for my FriendlyArm tiny6410. After installing the module, /dev/video2 shows up.

However, there is no video output at the Cheese Webcam Program.

I have tested my easycap on Fedora Linux desktop with no problem. Have I overlooked something when it comes to arm device?

29 March 2011 at 6:51 am · Reply

here is the debug message :

easycap::0adjust_standard: selected standard: PAL_BGHIN
easycap::0adjust_format: sought: 320×240,UYVY(0x59565955),1=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_NONE
easycap::0adjust_format: actioning: 320×240 PAL_BGHIN_AT_320x240_FMT_UYVY-n
easycap::0adjust_brightness: adjusting brightness to 0x7F
easycap::0adjust_contrast: adjusting contrast to 0x3F
easycap::0adjust_saturation: adjusting saturation to 0x2F
easycap::0adjust_hue: adjusting hue to 0x00
easycap::0adjust_format: sought: 640×480,UYVY(0x59565955),1=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_NONE
easycap::0adjust_format: actioning: 640×480 PAL_BGHIN_AT_640x480_FMT_UYVY-n
easycap::0adjust_format: sought: 640×480,YV12(0x32315659),0=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_ANY
easycap::0adjust_format: prefer: V4L2_FIELD_NONE=field, was V4L2_FIELD_ANY
easycap::0adjust_format: cannot do: 640×480 with standard mask 0x00
easycap::0adjust_format: cannot do 640x… with standard mask 0x00
easycap::0adjust_format: cannot do …x480 with standard mask 0x00
easycap::0adjust_format: 640×480 unmatched
easycap::0easycap_ioctl: requested input already in effect
easycap::0adjust_standard: selected standard: PAL_BGHIN
easycap::0adjust_standard: requested standard already in effect
easycap::0adjust_format: sought: 60×40,UYVY(0x59565955),0=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_ANY
easycap::0adjust_format: prefer: V4L2_FIELD_NONE=field, was V4L2_FIELD_ANY
easycap::0adjust_format: cannot do: 60×40 with standard mask 0x00
easycap::0adjust_format: actioning: 320×240 PAL_BGHIN_AT_320x240_FMT_UYVY-n
easycap::0adjust_format: sought: 60×240,UYVY(0x59565955),1=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_NONE
easycap::0adjust_format: cannot do: 60×240 with standard mask 0x00
easycap::0adjust_format: actioning: 320×240 PAL_BGHIN_AT_320x240_FMT_UYVY-n
easycap::0adjust_format: sought: 320×40,UYVY(0x59565955),0=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_ANY
easycap::0adjust_format: prefer: V4L2_FIELD_NONE=field, was V4L2_FIELD_ANY
easycap::0adjust_format: cannot do: 320×40 with standard mask 0x00
easycap::0adjust_format: actioning: 320×240 PAL_BGHIN_AT_320x240_FMT_UYVY-n
Selected input hasn’t got a tuner!easycap::0adjust_mute: adjusting mute: 0=peasycap->audio_idle
easycap::0adjust_brightness: unchanged brightness at 0x7F
easycap::0adjust_hue: unchanged hue at 0x80
easycap::0adjust_saturation: unchanged saturation at 0xAF
easycap::0adjust_contrast: unchanged contrast at 0xBF
^[[A^[[A^[[A^[[A^[[A^[[A^[[A^[[A^[[A^[[A^[[A^[[A^[[Aeasycap::0easycap_complete: easycap driver shutting down on condition green
easycap::0adjust_standard: selected standard: PAL_BGHIN
easycap::0adjust_format: sought: 320×240,UYVY(0x59565955),1=field,0x00=std mask
easycap::0adjust_format: sought: V4L2_FIELD_NONE
easycap::0adjust_format: actioning: 320×240 PAL_BGHIN_AT_320x240_FMT_UYVY-n
easycap::0adjust_brightness: adjusting brightness to 0x7F
easycap::0adjust_contrast: adjusting contrast to 0x3F
easycap::0adjust_saturation: adjusting saturation to 0x2F
easycap::0adjust_hue: adjusting hue to 0x00
easycap::0adjust_mute: adjusting mute: 1=peasycap->audio_idle

Nyla Summey

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