Backporting V4L2 (Video 4 Linux 2)

Mar 12, 2009 2 Replies
G

Hi



Anybody backported V4L2 (Video 4 Linux 2) from 2.6.26 later to previous versions (like 2.6.18 etc) ?



Scenario:



We have a platform which is running 2.6.18 kernel, and most of our modules are developed on that.Our hardware team developed new webcam which requires UVC(US?B VIdeo Class) driver for its operations. So I backported UVC driver from 2.6.26 to 2.6.18 .



But I found that ,


1)performance is not so good , due to old V4L2 (Video 4 Linux 2 library)
2)Features are minimum
3)We are going to manufacture different more cards , which V4L2 of
2.6.18 kernel might not have support

Decision : I decided to backport 2.6.26 to 2.6.18 , but I find it has lot many differences


Question: Did anybody backported V4 L2 ? If so , how much time did it take and what would be the complexity of the task


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A

I didn't do it, but I would expect it to be hard (if not impossible).

Why not upgrade the kernel?

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G

Hi Anon

We have lot of corporate kernel modules , which are written on kernel 2.6.18 . It would be difficult task to port every other modules to new kernel , for that sake of one module

--- > > Question: =A0 =A0 Did anybody backported V4 L2 ? If so , how much time =

did

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