From 980c5fd58773632a45ad890e2c0de2fd3a76ff59 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 17 Jun 2015 21:33:52 +0200 Subject: [PATCH] dm: usb: Allow usb host drivers to implement usb_reset_root_port 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 Acked-by: Simon Glass --- 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 fd11cc6f6c..b0e6e71a8f 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); +} + int usb_stop(void) { struct udevice *bus; @@ -268,11 +279,6 @@ 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 2bb6a063c6..25f8543f8d 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) -- 2.39.2