Sailfish OS Configuration for Xiaomi Redmi 2 (wt88047)

FAQ: https://github.com/mer-hybris/hadk-faq

Release: XDA Developers

This repository contains the device-specific configuration files for running Sailfish OS on the Xiaomi Redmi 2 (codename: wt88047). It provides hardware adaptation layers, system configurations, and device-specific settings needed to port Sailfish OS to this Android device.

Device Information

• Device: Xiaomi Redmi 2
• Codename: wt88047
• Vendor: Wingtech (manufactured for Xiaomi)
• Architecture: ARM
• SoC: Qualcomm Snapdragon (MSM platform)
• Display: 4.7" with 1.33 pixel ratio
• Modem: Supported ✅

What is Sailfish OS?

Sailfish OS is a Linux-based mobile operating system developed by Jolla. This project enables running Sailfish OS on Android devices by utilizing the Android Hardware Abstraction Layer (HAL) through the libhybris compatibility layer.

Project Structure

├── droid-configs-device/     # Submodule with common droid configuration framework
├── patterns/                 # Package pattern definitions
│   ├── jolla-configuration-wt88047.yaml
│   ├── jolla-hw-adaptation-wt88047.yaml
│   └── jolla-ui-configuration-wt88047.yaml
├── rpm/                      # RPM package specification
│   └── droid-config-wt88047.spec
└── sparse/                   # Device-specific configuration files
    ├── etc/                  # System configuration
    ├── lib/                  # System libraries and services
    ├── system/               # Android system integration
    ├── usr/                  # User space binaries and scripts
    └── var/                  # Variable data and environment configs

Supported Features

✅ Working Features

• Display: Hardware composer integration with Qt5
• Touch Input: Touchscreen and hardware keyboard support
• Audio: PulseAudio with Android HAL integration
• Bluetooth: HCI over SMD with automatic MAC address detection
• WiFi: WLAN module support with automatic loading
• Camera: Dual camera support (primary 8MP, secondary 2MP)
  • Multiple resolution modes (4:3 and 16:9)
  • Flash, focus, and white balance controls
  • Video recording support
• GPS: Location services via hybris
• FM Radio: Hardware FM radio support
• USB: Multiple USB modes (MTP, mass storage, developer mode)
• Cellular: Modem and telephony support
• SD Card: Automatic mounting
• Sensors: Various hardware sensors
• LED Notifications: Hardware notification LED support

📱 Camera Specifications

• Primary Camera: 3264x2448 (8MP), 1920x1080 video
• Secondary Camera: 1600x1200 (2MP), 1280x720 video
• Features: Auto/manual focus, flash modes, ISO control, white balance

🔊 Audio Features

• PulseAudio: Android HAL integration
• Call Audio: In-call audio routing
• Media Playback: GStreamer 1.0 multimedia framework
• Audio Recording: Qt5 multimedia capture support

Installation

This configuration is designed to be used with the Sailfish OS Hardware Adaptation Development Kit (HADK).

Prerequisites

• Sailfish OS SDK
• Android source tree for wt88047
• HADK environment set up

Building

1. Clone this repository into your HADK workspace
2. Initialize the droid-configs-device submodule:

   git submodule update --init --recursive

3. Follow the standard HADK build process
4. The configuration will be automatically included in the build

Configuration Highlights

Hardware Composer

• Platform: hwcomposer
• Graphics: EGL platform integration
• Input: Touch events via /dev/input/event0

Audio Configuration

• Sample Rate: 48kHz
• Channels: Stereo support
• Routing: Automatic audio policy management
• Bluetooth: A2DP and HFP support

System Services

• Bluetooth: Automatic HCI initialization
• WiFi: Module auto-loading with proper timing
• USB: Mode detection and switching
• GPS: Qualcomm location services

Development

Key Configuration Files

• sparse/var/lib/environment/compositor/droid-hal-device.conf: Display and input configuration
• sparse/etc/pulse/arm_droid_default.pa: Audio system configuration
• sparse/etc/dconf/db/vendor.d/jolla-camera-hw.txt: Camera hardware settings
• sparse/usr/bin/droid/droid-hcismd-up.sh: Bluetooth initialization script

Customization

Device-specific configurations can be modified in the sparse/ directory. Changes to hardware parameters should be made carefully and tested thoroughly.

Contributing

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch
3. Test your changes thoroughly
4. Submit a pull request with detailed description

Reporting Issues

When reporting issues, please include:

• Sailfish OS version
• Hardware revision
• Detailed steps to reproduce
• Relevant log files

Related Projects

• Sailfish OS - The mobile operating system
• libhybris - Android HAL compatibility layer
• droid-hal-configs - Common configuration framework

License

This project follows the licensing terms of the Sailfish OS ecosystem. Individual components may have different licenses - please check specific files for details. The custom code added by me is licensed under the MIT License. Feel free to use it however you like.

Acknowledgments

• Jolla and the Sailfish OS community
• mer-hybris project contributors
• Device porters and testers
• Xiaomi for the hardware platform

---

Note: This is a community port. Use at your own risk. Always backup your device before flashing custom firmware.