| Sebastian Andrzej Siewior | 97238b3 | 2013-07-05 14:51:33 +0200 | [diff] [blame] | 1 | #include <linux/init.h> |
| 2 | #include <linux/platform_device.h> |
| 3 | #include <linux/pm_runtime.h> |
| 4 | #include <linux/module.h> |
| 5 | #include <linux/of_platform.h> |
| 6 | |
| 7 | static int am335x_child_probe(struct platform_device *pdev) |
| 8 | { |
| 9 | int ret; |
| 10 | |
| 11 | pm_runtime_enable(&pdev->dev); |
| 12 | |
| 13 | ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); |
| 14 | if (ret) |
| 15 | goto err; |
| 16 | |
| 17 | return 0; |
| 18 | err: |
| 19 | pm_runtime_disable(&pdev->dev); |
| 20 | return ret; |
| 21 | } |
| 22 | |
| 23 | static int of_remove_populated_child(struct device *dev, void *d) |
| 24 | { |
| 25 | struct platform_device *pdev = to_platform_device(dev); |
| 26 | |
| 27 | of_device_unregister(pdev); |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | static int am335x_child_remove(struct platform_device *pdev) |
| 32 | { |
| 33 | device_for_each_child(&pdev->dev, NULL, of_remove_populated_child); |
| 34 | pm_runtime_disable(&pdev->dev); |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | static const struct of_device_id am335x_child_of_match[] = { |
| 39 | { .compatible = "ti,am33xx-usb" }, |
| 40 | { }, |
| 41 | }; |
| 42 | MODULE_DEVICE_TABLE(of, am335x_child_of_match); |
| 43 | |
| 44 | static struct platform_driver am335x_child_driver = { |
| 45 | .probe = am335x_child_probe, |
| 46 | .remove = am335x_child_remove, |
| 47 | .driver = { |
| 48 | .name = "am335x-usb-childs", |
| 49 | .of_match_table = of_match_ptr(am335x_child_of_match), |
| 50 | }, |
| 51 | }; |
| 52 | |
| 53 | module_platform_driver(am335x_child_driver); |
| 54 | MODULE_DESCRIPTION("AM33xx child devices"); |
| 55 | MODULE_LICENSE("GPL v2"); |