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97238b35 SAS |
1 | #include <linux/platform_device.h> |
2 | #include <linux/pm_runtime.h> | |
3 | #include <linux/module.h> | |
4 | #include <linux/of_platform.h> | |
5 | ||
6 | static 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; | |
17 | err: | |
18 | pm_runtime_disable(&pdev->dev); | |
19 | return ret; | |
20 | } | |
21 | ||
22 | static 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 | ||
30 | static 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 | ||
37 | static const struct of_device_id am335x_child_of_match[] = { | |
38 | { .compatible = "ti,am33xx-usb" }, | |
39 | { }, | |
40 | }; | |
41 | MODULE_DEVICE_TABLE(of, am335x_child_of_match); | |
42 | ||
43 | static struct platform_driver am335x_child_driver = { | |
44 | .probe = am335x_child_probe, | |
45 | .remove = am335x_child_remove, | |
46 | .driver = { | |
47 | .name = "am335x-usb-childs", | |
e79c8a06 | 48 | .of_match_table = am335x_child_of_match, |
97238b35 SAS |
49 | }, |
50 | }; | |
51 | ||
52 | module_platform_driver(am335x_child_driver); | |
53 | MODULE_DESCRIPTION("AM33xx child devices"); | |
54 | MODULE_LICENSE("GPL v2"); |