Hi Simon,
On Mon, May 4, 2015 at 12:30 PM, Simon Glass sjg@chromium.org wrote:
Support this function with driver model also (CONFIG_DM_USB).
Signed-off-by: Simon Glass sjg@chromium.org
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 714bc0e..8445a42 100644 --- a/drivers/usb/host/usb-uclass.c +++ b/drivers/usb/host/usb-uclass.c @@ -555,6 +555,49 @@ 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;
You check this here.
for (device_find_first_child(hub, &dev);dev;device_find_next_child(&dev)) {struct usb_port_status status;if (!device_active(hub))continue;
How can this be true here? Maybe you meant to check if the "dev" was active?
udev = dev_get_parentdata(hub);
Why parent of the hub? Looking for an upstream hub?
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); --
Thanks, -Joe