2of-find-property.rar

#include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/of.h> //设备节点类型 static struct device_node *devnode; //节点属性类型 static struct property *prop; static int len = 0; static int __init test_init(void) { printk("test_init.....\n"); //根据节点路径寻找节点函数 devnode = of_find_node_by_path("/test1"); if (NULL == devnode) { printk("of_find_node_by_path failed....\n"); return 1; } printk("name: %s full_name: %s\n", devnode->name, devnode->full_name); //获取节点属性 prop = of_find_property(devnode, "compatible", &len); if (NULL == prop) { printk("of_find_property failed....\n"); return 1; } printk("property name: %s value: %s\n", prop->name, (char *)prop->value); return 0; } static void __exit test_exit(void) { printk("test_exit......\n"); } module_init(test_init); module_exit(test_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Jin.Deng"); MODULE_INFO(intree, "Y");