1#include <linux/platform_device.h>
 2#include <linux/pm_runtime.h>
 3#include <linux/module.h>
 4#include <linux/of_platform.h>
 5
 6static int am335x_child_probe(struct platform_device *pdev)
 7{
 8	int ret;
 9
10	pm_runtime_enable(&pdev->dev);
11
12	ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
13	if (ret)
14		goto err;
15
16	return 0;
17err:
18	pm_runtime_disable(&pdev->dev);
19	return ret;
20}
21
22static int of_remove_populated_child(struct device *dev, void *d)
23{
24	struct platform_device *pdev = to_platform_device(dev);
25
26	of_device_unregister(pdev);
27	return 0;
28}
29
30static int am335x_child_remove(struct platform_device *pdev)
31{
32	device_for_each_child(&pdev->dev, NULL, of_remove_populated_child);
33	pm_runtime_disable(&pdev->dev);
34	return 0;
35}
36
37static const struct of_device_id am335x_child_of_match[] = {
38	{ .compatible = "ti,am33xx-usb" },
39	{  },
40};
41MODULE_DEVICE_TABLE(of, am335x_child_of_match);
42
43static struct platform_driver am335x_child_driver = {
44	.probe		= am335x_child_probe,
45	.remove         = am335x_child_remove,
46	.driver         = {
47		.name   = "am335x-usb-childs",
48		.of_match_table	= am335x_child_of_match,
49	},
50};
51
52module_platform_driver(am335x_child_driver);
53MODULE_DESCRIPTION("AM33xx child devices");
54MODULE_LICENSE("GPL v2");