new camera driver

[xenpac]

i worked on the BPI M1 Board (the first one) for quite a while now improving or more or less rewriting the A20 CSI camera driver.

there are no more artifact-ghost-frames any more.

The framerate goes from 5fps(full) to 120fps(crobbed small)

i also modified the camera-device driver for the ov5640.

disadvantage: existing camera device drivers would not be compatible any more.

 

maybe someone wants to give it a try and check it out.

 

it can be found here:

https://github.com/xenpac/OV5640-Sunxi-A20

[@lex]

I would suggest you work on the legacy kernel 3.4.112 , that would be a boost. Any plans on that?

[xenpac]

Hi ?Alex

 

Yes, kernel version is 3.4.112, i guess (not having it on desk)

 

actual source code was:

https://github.com/LeMaker/linux-sunxi

 

It seems the CSI driver did not change over the last years.

 

If u check it out, disable the DEBUG output in the source files (forgot that)

 

addendum:

the device driver files are all for ov5640, but different setups:

- ov5640.c = standard

the others have features like autofocus, crobbing, scaling.

so just to be be able to easy switch to explore features.

 

In ..docu/ there is a util "vt" to measure framerate with no output and also set resolutions.

[xenpac]

Just as a thought....if to integrate that into mainline.....

is there any CSI support in mainline?  (if not, we put it right into the Cam driver. as no one else is using CSI-0 and 1).

plus supporting videobuf2.

 

I think the Clock module is there as well as the I2C.

 

ps. just wonder what other chips have compatible CSI port ???

[jiapei100]

Hi, xenpac:

 

I wonder if you have a manual on how to build your driver at https://github.com/xenpac/OV5640-Sunxi-A20 ?

And, how can I compile your driver with the installed linux kernel, which is also successfully booted?

 

Cheers

Pei

[xenpac]

Hi jiapei100,

 

yes i should have named it "sun4i_csi" so one can easier clone it under .../drivers/media/video/sun4i_sci...

and yes you shall have an allwinner/lemaker based kernel sourcecode on your Bananapi with its uImage being booted.

Last week i checked this one and it works: https://github.com/nisenbeck/linux-bananapi

unfortunate i found no armbian kernel on github, but this works with patches only i guess.

 

Under /lib/modules/..  you find the module tree for each kernel that ever resided on your system.

 

So..install:

 

goto cd .../drivers/media/video/ ,  rm -r sun4i_csi  to remove the whole driver.

git clone  https://github.com/xenpac/OV5640-Sunxi-A20.git

 

now u have this "ov5640-sunxi-a20"  directory under video. rename it: mv  ov5640-sunxi-a20   sun4i_csi

 

goback to your source root:

make modules

make modules_install

reboot

 

if you specified ov5640 as default camera in your fex file you are all set, else you have to modprobe the right one.

 

i used "guvcview" app for testing which worked fair, cheese did not.

another good test app is "qv4l2", apt-get install qv4l2  !  though video output is slow but controls work exact.

 

in the "docu" directory there are some scripts to easy change your camera device and also a "vt" commandline tool that also outputs video.

the other camera drivers in "device" are all ov5640 with some different setups, read first line in file.

 

i will update some changes shortly.