严格说,此数据结构不是设备模型中的,它是一个DTS中节点对应的内存中设备描述,一般此 对象代表一个设备。 struct device_node { const char *name; const char *type; phandle phandle; const char *full_name; struct fwnode_handle fwnode; struct property *properties; struct property *deadprops; /* remove...
intof_platform_populate(structdevice_node *root, conststruct of_device_id *matches, conststruct of_dev_auxdata *lookup, structdevice *parent) { structdevice_node *child; intrc = 0; root= root ? of_node_get(root) : of_find_node_by_path("/"); if(!root) return-EINVAL; for_each_ch...
*Creates a platform_device for the provided device_node, andoptionally *recursively create devices for all the child nodes. */ //为节点和其孩子节点生成一个设备文件。 staticint of_platform_bus_create(structdevice_node *bus, const struct of_device_id *matches, const struct of_dev_auxdata *lo...
以网卡 Fec 为例,网卡驱动在初始化 fec_probe 时遍历 dts 的定义,创建相应 struct phy_device 类型的设备,主要步骤为: 注册网络设备 net_device 申请队列和 DMA 申请MDIO 总线 创建并注册 Phy 设备 fec_probe(struct platform_device *pdev) ->structdevice_node*np=pdev->dev.of_node, *phy_node;// 获...
device = '/dev/device_node' # 设备节点路径 fd = os.open(device, os.O_RDWR) 定义struct的格式: 代码语言:txt 复制 format_string = 'i' # struct的格式,这里以int类型为例 将struct转换为字节流: 代码语言:txt 复制 data = struct.pack(format_string, value) # value为要传递的值 ...
platform_device platform总线用于描述设备硬件信息的结构体,包括该硬件的所有资源(io,memory、中断、DMA等等)。 structplatform_device{ constchar*name; intid; boolid_auto; structdevicedev; u32 num_resources; structresource*resource; conststructplatform_device_id*id_entry; ...
{intret;structtimer_led_drvdata *pdata;structdevice *dev = &pdev->dev;structdevice_node *np = dev->of_node; printk("[%s]===timer_led driver probe start===\n", __func__);if(!np)return-ENODEV; pdata= kzalloc(sizeof(*pdata), GFP_KERNEL);if(!pdata)return-ENOMEM; platform_...
structdevice_node *child;intrc = 0;root= root ? of_node_get(root) : of_find_node_by_path("/");if(!root)return-EINVAL;for_each_child_of_node(root,child) { //生成platformdevice rc= of_platform_bus_create(child,matches, lookup,parent,true);if(rc)break;} of_node_put(...
*/ struct net_device { //设备名称, 长度16 char name[IFNAMSIZ]; struct netdev_name_node *name_node; //设备别名 struct dev_ifalias __rcu *ifalias; /* * I/O specific fields * FIXME: Merge these and struct ifmap into one */ unsigned long mem_end; unsigned long mem_start; unsigned...
@@ -404,6 +404,7 @@ static void __init gemini_cc_init(struct device_node *np) GFP_KERNEL); if (!gemini_clk_data) return; gemini_clk_data->num = GEMINI_NUM_CLKS; /* * This way all clock fetched before the platform device probes, @@ -457,7 +458,6 @@ static void __init...