I'm just an self-learning programming enthusiast that like to learn about programming in my free time.
This is just my experimental kernel for Poco X3 Pro(vayu), will be mostly focuses on hid-sony and hid-playstation.
Feel free to be my guest but use the codes at your own risk, I won't responsible for anything happened to your phone.


Things done:
Added necessary components for the phone to operate properly:
  - Wifi driver
  - Audio driver (mandatory, or else the phone won't boot into system)
  - Data driver
  - Exfat filesystem
    ( All these do not included in Xiaomi vayu's kernel source due to not their proprietary.
      but available in their repositories as standalone repo. )
  - Xiaomi Turbo Charge key
    ( I have no idea why this is not included )
    
Sony playstation 4/5 controllers related changes:
  - Enabled force feedback(vibration) for Sony PS4 controller(Dualshock 4) - hid-sony
  - Added Sony PS5 controller(Dualsense/Edge) - hid-playstation support.
  - Migrated Dualshock 4 support from hid-sony to hid-playstation
    ( Both sony driver sources upstreamed to exactly latest commit available(as of 2022-12),
      with necessary backports/dependency for hid-playstation)
    
Fixes:
  - some compiler warnings
  - some compiler output display issue


Things to do:
  - trying to expand hid-sony and hid-playstation functionality.
  
  
Things to find out:
  - where to start android app development?
  - how to convert kernel device driver to android userspace driver?
  - how to execute linux binary from android app?
 (Gurus please lead me to correct paths)
 
 
 Special Thanks to:
  - https://github.com/MiCode/Xiaomi_Kernel_OpenSource
  - https://github.com/blakbin/MiCode_Kernel_Vayu/tree/vayu-r-oss-mod
  - https://www.kernel.org/
  - https://patchwork.kernel.org/comment/23977779/
  - https://android.googlesource.com/
  and Sony Team which leads by Mr. Roderick Colenbrander contributing in both the Sony drivers support.