Linux Camera Driver Development (V4L2)

Embedded Linux & Multimedia · 40 illustrated lessons (text/HTML)

Outcomes

• Write a V4L2 sensor driver with controls, formats and streaming
• Manage capture buffers with DMA-BUF and the media controller
• Tune image quality (AWB, AE, colour, HDR) and test camera stability

Where we teach this

• VIS-110 · V4L2 Driver Development live cohort

The lessons

Every lesson in this curriculum, in the order we teach it.

• 1Linux camera driver development in practice
• 2Kernel module basics
• 3Character-device driver basics
• 4The V4L2 core framework explained
• 5Camera hardware interfaces
• 6I2C subsystem driver
• 7Camera sensor drivers
• 8The V4L2 control interface
• 9Video buffer management
• 10DMA buffer allocation
• 11Image format handling
• 12Video stream operations
• 13Interrupt handling
• 14Clock and power management
• 15Device-tree configuration
• 16Introduction
• 17User-space tools
• 18Multi-camera support
• 19Image quality tuning: white balance, auto exposure and colour correction
• 20ISP integration: image signal processing, 3A algorithms and post-processing
• 21The DMA-BUF framework: buffer sharing, export/import and sync objects
• 22The Media Controller framework explained
• 23V4L2 asynchronous probing in practice
• 24Firmware loading
• 25Video capture in practice: grabbing and saving camera images
• 26Video preview in practice
• 27Control parameters in practice
• 28Format conversion in practice: YUV to RGB and image scaling
• 29Multi-plane support
• 30High frame-rate support: high-speed modes, bandwidth optimisation and timing control
• 31HDR support: multi-exposure fusion and tone mapping
• 32Autofocus driver
• 33Flash control
• 34Sensor calibration: lens shading and dead-pixel correction
• 35Thermal management
• 36Introduction
• 37Camera driver stability testing
• 38Compatibility testing overview
• 39Driver release
• 40Project overview