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The other touchpad kernel source from HP (android dump)

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OP green

green

Developer

Posted 07 February 2012 - 01:22 PM #1

Hi all!

So finally there is progress on this front that I am happy to make a public update about.

HP supports the community and was kind enough to provide us with the Android kernel source and some other GPL components that they modified for the few Touchpads that were accidentally released running Android.

Many thanks go to attorney Benjamin E. Maskell from Roetzel & Andress for helping with this.
Also I'd like to thank phil86 for providing his Android-running touchpad to me and to Snow02 to help with covering some shipping costs.

Now without further delays here's the meat:

I uploaded the code to github, so you can take a look here: https://github.com/d...p-topaz-android

You can get the raw files here:
Kernel: http://crimea.edu/~g...-Kernel.tar.bz2
Additionally we've got the code to two other components:
androidvncserver: http://crimea.edu/~g...910_vnc.tar.bz2
i2c-tools: http://crimea.edu/~g...910_i2c.tar.bz2

Now the source provided so far misses one component still, the wifi driver. I did some digging around and it appears that the wifi driver shipped with both webOS and with the Android are GPL, there are multiple evidences of that including the driver licensing string. Plus the driver is linked against 10+ GPLONLy kernel symbols which makes it kernel derivative. HP is still investigating this matter and we hope to hear from them soon.

What's interesting about this kernel is it seems to be a totally separate development from the webOS kernel (this was suspected from the very beginning), but now the comments in the code seem to imply that HP had another team working on Android port to Touchpad and that team appears to be totally separate from the webOS team. I wonder if that means there was a plan to ship the Touchpad with Android that were then preempted by webOS plans after Palm purchase.
Latest change in the code is from March 2011.

From this code we have already found a way to enable the debug serial console routed via audio jack.
Also it's interesting that audio ports are different and we are looking into how this could potentially be leveraged.
BT is implemented in a more straightforward way and I hope to adopt this into CM9 kernel as making more sense over what we have now.

Edit: I just got a call from a HP webOS person who told me there is no way HP actually created this other kernel source and there is (and was) no another kernel team at HP that works on touchpad. So I thought you might be interested in this too.

Edited by green, 08 February 2012 - 04:01 PM.

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zsld0423

zsld0423

Android Apprentice

Posted 07 February 2012 - 01:26 PM #2

Great update! Can't wait to see what comes of this new info :D

Sent from my YP-G1 using RootzWiki
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Aganar

Aganar

Member

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Posted 07 February 2012 - 01:28 PM #3

Awesome. Hope this improves the CM9 port in some way.
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Soupdog50

Soupdog50

News Team

Posted 07 February 2012 - 01:28 PM #4

Let's hope HP are more forthcoming with the rest of the stuff we know they have hidden away.
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bridges86406

bridges86406

blah

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Posted 07 February 2012 - 01:52 PM #5

Here's hoping that this can help with the Camera and hardware acceleration aspects on CM9.
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macauman

macauman

Super User

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Posted 07 February 2012 - 02:03 PM #6

Does that mean camera and video hardware acceleration are included?
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TouchPad dual booting WebOS with...
CM7 A3 CM7 A3.5
CM9 A0 CM9 A0.5 CM9 A0.6 CM9 A1 CM9 A2 CM9 Official Nightlies!!!!

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Redflea

Redflea

Supporting Member

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Posted 07 February 2012 - 02:19 PM #7

Great news to have progress on this issue. Thanks very much for the updated and efforts, as always they are much appreciated.
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Noob Guide to set up a build environment & build Touchpad (CM9/CM10) or Galaxy Nexus (Fruits-n-Veggies/Liquid/AOKP) ROMs: http://goo.gl/Zpht8

Samsung Galaxy Nexus (Toro): ROM: AOKP (personal builds): Kernel: Franco's Nightly (usually)
HP Touchpad: CM9 Homemade Kang based on Dalingrin and Co.

HY-rowi

HY-rowi

Android Lover

  • 110 posts

Posted 07 February 2012 - 02:25 PM #8

Does that mean camera and video hardware acceleration are included?


it was included in cm7 too.

the problem as i understand is to get them to work with 4.0 kernel, not the availability. obviously i hope i'm wrong.
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TheRealHotshot

TheRealHotshot

Member

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Posted 07 February 2012 - 02:26 PM #9

One step closer to installing android on my touchpad.

Sent from my myTouch_4G_Slide using Tapatalk
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scrizz

scrizz

I AM The Scrizz

Posted 07 February 2012 - 02:26 PM #10

excellent news!
:D
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