[KERNEL][CM / MIUI][12.12.14] Williams kernel v5 - Xperia SP Android Development

This is the version for CyanogenMod based ROMs
Introduction
Hello dear developers and android hackers,
On this thread, I will share with you a project I am developing as I am learning kernel programming / hacking. This version of the williams kernel is based on CyanogenMod kernel sources with enhancement, mostly for battery saving.
Click to expand...
Click to collapse
Features
Based on Cyanogenmod kernel sources
Compiled with linaro GCC 4.9.1 toolchain, -O3
Frequency table from 281Mhz to 1832Mhz
Governors : interactive, ondemand, performance, conservative, lagfree, smartassV2, intellidemand2, intelliactive and lionheart
I/O schedulers : noop, deadline, cfq, V(R), row, sio, fifo
Fast hotplug
Undervolting
Dynamic fsync thank's to faux123
FauxSound thank's to faux123
Force fast charging
TWRP and CWM recovery included, fota partition support
Click to expand...
Click to collapse
Installation instructions
Code:
Use this kernel at you own risk !
I am not responsible for any damage or problem.
Flash zip via recovery
Reboot
Click to expand...
Click to collapse
Download
Recovery flashable zip :
CM11 Williams kernel v5.zip
mirror
CM10.1 Williams kernel v3.1.zip
mirror
MIUI Williams kernel v3.1.zip
mirror
Kernel Source :
Github
Click to expand...
Click to collapse
Changelog
CM Williams kernel v5 : 12.12.14 (cm11 only)
Set qcom mpdecision as default hotplug (No need to deactivate it anymore unless you want to use another hotplug )
Remove msm_mpdecision
Add fast hotplug
Increase 1.8GHz step frequency for better stability
Add FOTA recovery support (Volume down)
CM Williams kernel v4.1 : 27.11.14 (cm11 only)
Rebased on latest cyanogenmod sources
CM Williams kernel v4 : 22.07.14 (cm11 only)
Rebased on latest cyanogenmod sources
Fixed Wi-Fi
Replaced philz recovery with cwm
CM Williams kernel v3.1 : 14.06.14
Fix Sound Control
CM Williams kernel v3 : 14.06.14
Now supports cm10.1 and MIUI, please see download section
Add FauxSound. Thank's to @faux123
Small changes in acpuclock for possible better stability
CM11 Williams kernel v2 : 29.05.14
Changed frequency table : clock speeds from 281 to 1832 MHz. Thank's to @faux123 and @DooMLoRD
Add dynamic fsync thanks to @faux123
Add undervolting thanks to @DooMLoRD and @faux123
Add o3 compiler optimization
Add force fast charging, thanks to @DooMLoRD for the port
CM11 Williams kernel v1 : 27.05.14
Initial release
Check my github to see all the changes.
Click to expand...
Click to collapse
FAQ
Q : With what ROM can I use this kernel ?
A : It should work with any ROM based on CyanogenMod. See the download section for the different versions available There is also a version for Stork based ROM there
Q : What features will be added to next versions ?
A : I probably don't know. If you have a feature request, please use the devdb tab for it on the top of the thread.
Q : Your kernel isn't working / My phone isn't booting anymore
A : Read this whole post once more, search for your problem in thread and report it if you haven't found a solution.
Q : Can I install this kernel on locked bootloader ?
A : No ! This kernel is only for unlocked bootloader.
Q : Does this kernel include recovery ?
A : Yes ! You can access by pressing volume button when the lights blink. Volume up to go to CWM and Volume down to go to TWRP.
Q : What are mpdecision and fast hotplug ?
A : This is what manage your cpu cores and decide which core will be online. Fast hotplug is a brand new hotplug that I wrote. You can find more information there
Q : What are mpdecision and fast hotplug ?
A : This is what manage your cpu cores and decide which core will be online. Fast hotplug is a brand new hotplug that I wrote. You can find more information there
Q : How to control fast hotplug ?
A : I modified Pimp my Z1 to be compatible with fast hotplug. You can use it without any problem on your Xperia SP to configure fast hotplug (Power Management menu) but it might have bugs with other functions (you can still try, I haven't had problems yet ).
You can find it there
Q : Where does the name come from ?
A : This kernel isn't named after someone but after a pear. We use this pear to make one of the best swiss "eau de vie" called Williamine.
Click to expand...
Click to collapse
Thanks To/Credits
Code:
* Sony for their sources and device
* FXP team, AdFad666, uberlaggydarwin and all the others persons who participated in creating cm11
* @DooMLoRD
* @thewadegeek for his [URL="http://forum.xda-developers.com/showthread.php?t=1748297"]Tutorial[/URL]
* @show-p1984 for his mpdecision
* @dssmex
* bbedward
* Erasmux
* faux123
* Androguide.fr for Pimp my Z1
* The xda community for making me discover android and for answering so many of my questions
* Google for kernel sources and its search engine
* Apple for making expensive phone so that I never bought one of theirs
Please let me know per pm if there is any mistake or misspelled word in this thread. Automatic correction does a great job but since english isn't my motherthongue I'm pretty sure I made mistakes.
XDA:DevDB Information
Williams kernel - CM / MIUI, Kernel for the Sony Xperia SP
Contributors
pec0ra
Kernel Special Features:
Version Information
Status: Testing
Created 2014-05-27
Last Updated 2014-12-12

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This is beautyfull, thanks!
EDIT: I tryed the kernel:
1) I think the splash screen is too bright;
2) The RIL doesn't work, my phone says ''no service''
If i find other bugs I'll poste them

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Wytosandroid said:
This is beautyfull, thanks!
EDIT: I tryed the kernel:
1) I think the splash screen is too bright;
2) The RIL doesn't work, my phone says ''no service''
If i find other bugs I'll poste them
Click to expand...
Click to collapse
Thank's for the quick review
1) Splash screen is the same as for the other version.
2) This is because it is based on fxp 320. I'll see tomorrow if I can change this but it works great on my phone...

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Thanks for the kernel!!!
Unfortunately, I've lost phone network after rebooting. In addition, changes to parameters (using fauxclock) don't survive a reboot. Of course, biggest issue is can't call/be called...
I'm on FXP 320...
EDIT: sorry, comments above were not there yet when I was writing my comments Hope you find the solution to RIL problem!

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joaste said:
Thanks for the kernel!!!
Unfortunately, I've lost phone network after rebooting. In addition, changes to parameters (using fauxclock) don't survive a reboot. Of course, biggest issue is can't call/be called...
I'm on FXP 320...
EDIT: sorry, comments above were not there yet when I was writing my comments Hope you find the solution to RIL problem!
Click to expand...
Click to collapse
I'll post a test version in 5 minutes for RIL !
Edit :
Please tell me if this one works : http://www.mediafire.com/download/n26gcpj3l72h34o/cm11_williams_kernel_v1_fix_test.zip
It uses the ramdisk of fxp 319

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pec0ra said:
I'll post a test version in 5 minutes for RIL !
Edit :
Please tell me if this one works : http://www.mediafire.com/download/n26gcpj3l72h34o/cm11_williams_kernel_v1_fix_test.zip
It uses the ramdisk of fxp 320
Click to expand...
Click to collapse
RIL is working. Good Job!

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joaste said:
RIL is working. Good Job!
Click to expand...
Click to collapse
Thank's for the quick test !
The links of OP are updated with this working version.

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Sttangely, in Faux123, I/O scheduler settings stick after reboot but governor settings do not (goes back to interactive after reboot - have been setting it to lionheart).
Am curious to see if battery performance is better or not...
Again, good job and thanks for taking the time!

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Add to oc cm11 working oc
Tapatalk-kal küldve az én C5303-el

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jancsessz said:
Add to oc cm11 working oc
Tapatalk-kal küldve az én C5303-el
Click to expand...
Click to collapse
Use the request feature tab !

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Feature request
1. Zram
2. Fastcharging
3. KSM
4. OC
5. New governor smartassh3
Tapatalk-kal küldve az én C5303-el

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jancsessz said:
Feature request
1. Zram
2. Fastcharging
3. KSM
4. OC
5. New governor smartassh3
Tapatalk-kal küldve az én C5303-el
Click to expand...
Click to collapse
No, I mean open the web browser and click on the link "feature requests" on the top of the page.
Sent from my Xperia SP using Tapatalk

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Hi, would it be possible to add rear mic support into this kernel? Its currently missing in the CM11 kernel...

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peters. said:
Hi, would it be possible to add rear mic support into this kernel? Its currently missing in the CM11 kernel...
Click to expand...
Click to collapse
I will take a look at it but I don't think I'll manage to fix it. It's probably not kernel related.
Btw, I will NOT add smartassH3 because it is exactly the same as smartassV2. Only the name and the tunable parameters are changed so you can edit it by yourself using any cpu control app. Plus, smartassH3 is still based on old smartassV2 which doesn't work on multicores. The smartassV2 version in Williams kernel was adapted to work on newer phones.

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Can U add Intelli-KSM to save baterry?

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How about antutu test? Score?

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Vivaz90197 said:
Can U add Intelli-KSM to save baterry?
Click to expand...
Click to collapse
Use feature request tab to request
Sent from my C5303 using Tapatalk

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question
Hi !
Is this kernel stable and does he improve battery life on cm11 fxp ?

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Good work!
It is much better than all the other CM kernels for SP.
But why the I/O still not as well as the kernel of the stock .201?
Every currently CM kernel seems to have this issue...

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quick feed back
I use this kernel on CM11 and it's working better than stock kernel especially for the smooth and battery life ! :laugh::good:
Tank you a lot !!