Implementing GPIO LED Control Using the Linux Platform Bus

Driver Source Code The following implementation utilizes the platform bus architecture to manage GPIO-based LEDs. It establihses a character device interface and parses device tree information during the probe phase. #include <linux/init.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/of_gpio ...

Posted on Tue, 25 Aug 2026 16:19:27 +0000 by sillyman

Implementing Hardware Interrupt Affinity via the Irq_chip Interface

The Linux kernel employs the struct irq_chip abstraction to represent interrupt controller hardware. Since different processor architectures manage interrupts uniquely, this structure encapsulates callback functon pointers directed at the underlying hardware control logic. Key operations such as enabling, masking, and configuring affinity are r ...

Posted on Mon, 01 Jun 2026 17:27:36 +0000 by msound