*of_get_child_count(获取某个device_node的子节点数)of_address.h//地址相关的函数, 比如of_get_address(获得reg属性中的addr, size值)of_device.h//设备相关的函数,比如of_match_device(从matches数组中取出与当前设备最匹配的一项)of_dma.h//设备树中DMA相关属性的函数of_gpio.h//GPIO相关的函数of_graph...
struct device_node *of_find_matching_node_and_match(struct device_node *from,const struct of_device_id *matches, const struct of_device_id **match) 函数参数和返回值含义如下: from:开始查找的节点,如果为 NULL 表示从根节点开始查找整个设备树。 matches: of_device_id 匹配表,也就是在此匹配表里面...
externstructdevice_node *of_get_parent(conststructdevice_node *node);externstructdevice_node *of_get_next_parent(structdevice_node *node);externstructdevice_node *of_get_next_child(conststructdevice_node *node,structdevice_node *prev);externstructdevice_node *of_get_next_available_child(conststru...
of_match_device函数会遍历matches数组中的每一项,将其与dev参数进行匹配,如果匹配成功,就返回该设备驱动程序对应的of_device_id结构体,否则返回NULL。 在设备树驱动程序中,一般会定义一个static const struct of_device_id类型的数组,用来存储设备驱动程序和设备节点之间的匹配信息。然后通过调用of_match_device函数,将...
If no minor class of device is set, all devices matching the major class of devices AND the supplied service capabilities will be returned. If service capabilities are set, all devices that match at LEAST the supplied service capabilities AND the major/minor class of device will be ret...
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i2c_set_clientdata(client, priv); of_id =of_match_device(tas571x_of_match, dev);if(of_id) priv->chip = of_id->data;elsepriv->chip = (void*) id->driver_data; priv->mclk = devm_clk_get(dev,"mclk");if(IS_ERR(priv->mclk) && PTR_ERR(priv->mclk) != -ENOENT) { ...
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b.the signals or device producing the incoherence. 5.Football. a.the act of a teammate or of teammates legally running ahead of a ballcarrier and blocking prospective tacklers:to run interference for the halfback. b.such a teammate or such teammates collectively. ...