+91 90921 89380 info@tranzwavetechnologies.com
Kernel Development

Linux Device Driver Development

Custom Linux kernel driver development for peripherals, buses, and hardware interfaces with DMA, interrupt handling, and power management.

Overview

Comprehensive Kernel Driver Suite

We developed a complete suite of Linux kernel drivers for a multi-function embedded platform, including I2C sensor drivers, SPI communication drivers, USB device controllers, custom PCI express peripherals, and DMA-based high-speed data acquisition interfaces.

The drivers were designed with robustness, performance, and maintainability in mind, following kernel coding standards and implementing proper error handling, power management, and device tree integration.

Challenge

Complex Driver Development Requirements

  • Multiple Bus Protocols: Support for I2C, SPI, USB, and PCIe with different timing and protocol requirements
  • High-Performance DMA: Implementing scatter-gather DMA for high-throughput data transfers without CPU overhead
  • Interrupt Handling: Managing multiple interrupt sources with proper prioritization and latency constraints
  • Power Management: Implementing runtime PM, system suspend/resume, and dynamic frequency scaling
  • Kernel Integration: Proper integration with Linux subsystems (device model, sysfs, devtmpfs, udev)
Solution

Professional Kernel Driver Implementation

Our kernel development team created production-quality drivers with comprehensive features:

Bus Driver Development

Implemented I2C drivers for temperature/humidity sensors using regmap API, SPI drivers for high-speed ADC/DAC with DMA, USB gadget drivers for custom protocols, and PCIe drivers for FPGA-based accelerators with MSI-X interrupts.

DMA & Interrupts

Implemented scatter-gather DMA engine drivers with ring buffers, developed interrupt handlers with threaded IRQ for heavy processing, used NAPI for network-style polling, and implemented IRQ affinity for multi-core optimization.

Power Management

Implemented runtime PM with autosuspend, developed system suspend/resume callbacks preserving state, integrated with PM domains and clock frameworks, and added devfreq support for dynamic frequency scaling.

Kernel Integration

Used device tree for hardware description, integrated with appropriate kernel subsystems (IIO, input, hwmon), implemented sysfs interfaces for runtime configuration, and created comprehensive debugfs entries for diagnostics.

Technologies

Technology Stack

Linux Kernel 6.x C Programming Device Tree I2C/SPI/USB/PCIe DMA Engine API regmap API Runtime PM IRQ Subsystem IIO Framework sysfs/debugfs GDB/KGDB ftrace
Outcomes

Results & Impact

15+
Custom Drivers Developed
2GB/s
Peak DMA Throughput
<10µs
Interrupt Latency
Zero
Memory Leaks / Race Conditions

Case Study Details

Domain
Kernel Development
Focus Areas
Device Drivers, DMA, Interrupt Handling
Platforms
ARM/x86 Linux Systems
Key Deliverables
  • Kernel module source code
  • Device tree bindings
  • Documentation (kerneldoc)
  • Test suites
  • Integration guides
Discuss Your Project

Related Case Studies

BSP

Embedded Board Bring-Up

Complete board bring-up from bootloader to Linux kernel with peripheral initialization and testing.

View Details
Embedded Linux

Yocto BSP Development

Custom Yocto Linux BSP with layers, recipes, and board support for embedded devices.

View Details
Product

Embedded Linux Product

End-to-end product development from concept to manufacturing with embedded Linux.

View Details

Need Expert Kernel Driver Development?

Let's discuss your device driver requirements. Our team has deep expertise in Linux kernel development and driver programming.

Partner With Us View All Case Studies