driver compilation

[Alberto]

Hello everyone.

I have to change drivers code  in

./cache/sources/linux-mainline/linux-5.10.y/sound/soc/codecs/

Which is the best way to compile a single sound driver without building all the kernel and without lost modification. I would like to work in my Ubuntu pc build Armbian directory.

[tparys]

If the driver is compiled as a module on your system, it's possible to swap out the module with your own copy via DKMS. It involves copying out the driver, and packaging it through the DKMS system. Install on your board and will replace the stock module on future kernel updates (at least given no major changes).

 

If the driver is builtin, you cannot swap it out and must rebuild the whole kernel image.

 

What category you fall into depends on what board you have, what kernel you're using, and what audio codec you want to change. Without additional detail and "armbianmonitor -u", there's no way to guess from your description.

[Heisath]

If you want to continue using the armbian buildscript but want the compilation to run faster (when doing small changes to kernel tree each time), you can also try to call 

./compile.sh CLEAN=""

 

This will skip cleaning the uboot and kernel sources and thus make compilation much faster. Warning, the patches will still be applied and might fail, shouldnt be a problem though.

See https://docs.armbian.com/Developer-Guide_Build-Options/ for more options.

[Alberto]

Thank you all,

I modified pcm5102a.c for capture and I’m working on a new file for TLV320AIC3101 (from tlv320aic31xx).

My knowledge are very low so I start with:

 

./compile.sh  OFFLINE_WORK=yes BOARD=nanopineo3 BRANCH=current RELEASE=focal BUILD_MINIMAL=no BUILD_DESKTOP=no KERNEL_ONLY=no KERNEL_CONFIGURE=yes COMPRESS_OUTPUTIMAGE=sha,gpg,img  

 

The script ./compile.sh replaces all my files in ./cache/sources/linux-mainline/linux-5.10.y/sound/soc/codecs/ so I would like to keep my file, how can I do it?

I replace files in “cache/../codecs/” with my own files every time the Script stops for menuconfig so I am able to compile mine. It works, but I’m sure there will be a better way. Can you suggest it to me, please?

 

Is there a way to compile only files in the directory ./cache/sources/linux-mainline/linux-5.10.y/sound/soc/codecs/ ? (without general rebuilt)

In the case, how can I compile only the files in the boards?

I attached debug info.

 

debuginfo

[Heisath]

As I said, try adding CLEAN="" to stop the script from cleaning the kernel tree in cache/

[Alberto]

2 hours ago, Heisath said:

As I said, try adding CLEAN="" to stop the script from cleaning the kernel tree in cache/

Thank you Heisath,

I tried with:

 

sudo ./compile.sh CLEAN="" OFFLINE_WORK=yes BOARD=nanopineo3 BRANCH=current RELEASE=focal BUILD_MINIMAL=no BUILD_DESKTOP=no KERNEL_ONLY=no KERNEL_CONFIGURE=yes COMPRESS_OUTPUTIMAGE=sha,gpg,img

 

but unfortunately my pcm5102a.c was replaced with the original one after few instructions of the compile script (perhaps from patching?)