Skill

kernel-driver

리눅스 커널 모듈/드라이버 개발 가이드. platform_driver, DT 바인딩, sysfs, ioctl. Triggers: kernel module, driver, platform_driver, sysfs, ioctl, 커널 모듈, カーネル

Install

npx claudepluginhub solitasroh/rkit --plugin rkit

Tool Access

This skill is limited to using the following tools:

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Preview

```c

SKILL.md

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Last CommitMar 22, 2026

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Linux Kernel Driver Guide

Module Skeleton

#include <linux/module.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/io.h> struct mydrv_data { void __iomem *base; int irq; }; static int mydrv_probe(struct platform_device *pdev) { struct mydrv_data *priv; struct resource *res; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->base = devm_ioremap_resource(&pdev->dev, res); priv->irq = platform_get_irq(pdev, 0); platform_set_drvdata(pdev, priv); return 0; }

DT Binding

mydevice@21e8000 { compatible = "vendor,mydevice"; reg = <0x021e8000 0x4000>; interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX6QDL_CLK_UART_IPG>; status = "okay"; };

Makefile (out-of-tree)

obj-m := mydrv.o KDIR ?= /lib/modules/$(shell uname -r)/build all: $(MAKE) -C $(KDIR) M=$(PWD) modules clean: $(MAKE) -C $(KDIR) M=$(PWD) clean

Key APIs

devm_* managed resources (auto-cleanup on remove)

platform_get_resource() for MMIO regions

devm_request_irq() for interrupt handlers

sysfs_create_group() for user-space interface

Linux Kernel Driver Guide

Module Skeleton

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/io.h>

struct mydrv_data { void __iomem *base; int irq; };

static int mydrv_probe(struct platform_device *pdev) {
    struct mydrv_data *priv;
    struct resource *res;
    priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
    res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
    priv->base = devm_ioremap_resource(&pdev->dev, res);
    priv->irq = platform_get_irq(pdev, 0);
    platform_set_drvdata(pdev, priv);
    return 0;
}

DT Binding

mydevice@21e8000 {
    compatible = "vendor,mydevice";
    reg = <0x021e8000 0x4000>;
    interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
    clocks = <&clks IMX6QDL_CLK_UART_IPG>;
    status = "okay";
};

Makefile (out-of-tree)

obj-m := mydrv.o
KDIR ?= /lib/modules/$(shell uname -r)/build
all: $(MAKE) -C $(KDIR) M=$(PWD) modules
clean: $(MAKE) -C $(KDIR) M=$(PWD) clean

Key APIs

devm_* managed resources (auto-cleanup on remove)
platform_get_resource() for MMIO regions
devm_request_irq() for interrupt handlers
sysfs_create_group() for user-space interface