1 #include <linux/string.h>
2 #include <linux/kernel.h>
4 #include <linux/init.h>
5 #include <linux/module.h>
6 #include <linux/mod_devicetable.h>
7 #include <linux/slab.h>
8 #include <linux/of_device.h>
10 #include <linux/errno.h>
12 void of_device_make_bus_id(struct of_device *dev)
14 static atomic_t bus_no_reg_magic;
15 struct device_node *node = dev->dev.of_node;
21 * For MMIO, get the physical address
23 reg = of_get_property(node, "reg", NULL);
25 addr = of_translate_address(node, reg);
26 if (addr != OF_BAD_ADDR) {
27 dev_set_name(&dev->dev, "%llx.%s",
28 (unsigned long long)addr, node->name);
34 * No BusID, use the node name and add a globally incremented
35 * counter (and pray...)
37 magic = atomic_add_return(1, &bus_no_reg_magic);
38 dev_set_name(&dev->dev, "%s.%d", node->name, magic - 1);
40 EXPORT_SYMBOL(of_device_make_bus_id);
42 struct of_device *of_device_alloc(struct device_node *np,
44 struct device *parent)
46 struct of_device *dev;
48 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
52 dev->dev.of_node = of_node_get(np);
53 dev->dev.dma_mask = &dev->archdata.dma_mask;
54 dev->dev.parent = parent;
55 dev->dev.release = of_release_dev;
58 dev_set_name(&dev->dev, bus_id);
60 of_device_make_bus_id(dev);
64 EXPORT_SYMBOL(of_device_alloc);