Allow usb uclass host drivers to implement usb_reset_root_port, this is used by single port usb hosts which do not emulate a hub, such as otg controllers.
Signed-off-by: Hans de Goede hdegoede@redhat.com --- drivers/usb/host/usb-uclass.c | 16 +++++++++++----- include/usb.h | 5 +++++ 2 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c index 8f26e35..afa8655 100644 --- a/drivers/usb/host/usb-uclass.c +++ b/drivers/usb/host/usb-uclass.c @@ -128,6 +128,17 @@ int usb_alloc_device(struct usb_device *udev) return ops->alloc_device(bus, udev); }
+int usb_reset_root_port(struct usb_device *udev) +{ + struct udevice *bus = udev->controller_dev; + struct dm_usb_ops *ops = usb_get_ops(bus); + + if (!ops->reset_root_port) + return -ENOSYS; + + return ops->reset_root_port(bus, udev); +} + #ifdef CONFIG_DM_DEVICE_REMOVE int usb_stop(void) { @@ -273,11 +284,6 @@ int usb_init(void) return usb_started ? 0 : -1; }
-int usb_reset_root_port(struct usb_device *udev) -{ - return -ENOSYS; -} - static struct usb_device *find_child_devnum(struct udevice *parent, int devnum) { struct usb_device *udev; diff --git a/include/usb.h b/include/usb.h index 2bb6a06..25f8543 100644 --- a/include/usb.h +++ b/include/usb.h @@ -705,6 +705,11 @@ struct dm_usb_ops { * is read). This should be NULL for EHCI, which does not need this. */ int (*alloc_device)(struct udevice *bus, struct usb_device *udev); + + /** + * reset_root_port() - Reset usb root port + */ + int (*reset_root_port)(struct udevice *bus, struct usb_device *udev); };
#define usb_get_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)