Support this function with driver model also (CONFIG_DM_USB).
Signed-off-by: Simon Glass s...@chromium.org
---
Changes in v2:
- Fix use of 'hub' instead of 'dev' in usb_detect_change()
drivers/usb/host/usb-uclass.c | 43 +++
1 file changed, 43 insertions(+)
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index 963464c..6e86f4a 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -628,6 +628,49 @@ int usb_scan_device(struct udevice *parent, int port,
return 0;
}
+/*
+ * Detect if a USB device has been plugged or unplugged.
+ */
+int usb_detect_change(void)
+{
+ struct udevice *hub;
+ struct uclass *uc;
+ int change = 0;
+ int ret;
+
+ ret = uclass_get(UCLASS_USB_HUB, uc);
+ if (ret)
+ return ret;
+
+ uclass_foreach_dev(hub, uc) {
+ struct usb_device *udev;
+ struct udevice *dev;
+
+ if (!device_active(hub))
+ continue;
+ for (device_find_first_child(hub, dev);
+dev;
+device_find_next_child(dev)) {
+ struct usb_port_status status;
+
+ if (!device_active(dev))
+ continue;
+
+ udev = dev_get_parentdata(dev);
+ if (usb_get_port_status(udev, udev-portnr, status)
+0)
+ /* USB request failed */
+ continue;
+
+ if (le16_to_cpu(status.wPortChange)
+ USB_PORT_STAT_C_CONNECTION)
+ change++;
+ }
+ }
+
+ return change;
+}
+
int usb_child_post_bind(struct udevice *dev)
{
struct usb_dev_platdata *plat = dev_get_parent_platdata(dev);
--
2.2.0.rc0.207.ga3a616c
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