For USB host controllers like xHC, its internal representation of
hub needs to be updated after the hub descriptor is fetched. This
adds a new op that does this.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
Reviewed-by: Simon Glass <s...@chromium.org>
---
Changes in v3: None
Changes in v2: None
drivers/usb/host/usb-uclass.c | 11 +++++++++++
include/usb.h | 21 ++++++++++++++++++++-
2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index d8d74bd..0b8a501 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -139,6 +139,17 @@ int usb_reset_root_port(struct usb_device *udev)
return ops->reset_root_port(bus, udev);
}
+int usb_update_hub_device(struct usb_device *udev)
+{
+ struct udevice *bus = udev->controller_dev;
+ struct dm_usb_ops *ops = usb_get_ops(bus);
+
+ if (!ops->update_hub_device)
+ return -ENOSYS;
+
+ return ops->update_hub_device(bus, udev);
+}
+
int usb_stop(void)
{
struct udevice *bus;
diff --git a/include/usb.h b/include/usb.h
index 58b4549..fad0401 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -758,6 +758,14 @@ struct dm_usb_ops {
* reset_root_port() - Reset usb root port
*/
int (*reset_root_port)(struct udevice *bus, struct usb_device *udev);
+
+ /**
+ * update_hub_device() - Update HCD's internal representation of hub
+ *
+ * After a hub descriptor is fetched, notify HCD so that its internal
+ * representation of this hub can be updated (xHCI)
+ */
+ int (*update_hub_device)(struct udevice *bus, struct usb_device *udev);
};
#define usb_get_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)
@@ -931,6 +939,17 @@ int usb_new_device(struct usb_device *dev);
int usb_alloc_device(struct usb_device *dev);
/**
+ * update_hub_device() - Update HCD's internal representation of hub
+ *
+ * After a hub descriptor is fetched, notify HCD so that its internal
+ * representation of this hub can be updated.
+ *
+ * @dev: Hub device
+ * @return 0 if OK, -ve on error
+ */
+int usb_update_hub_device(struct usb_device *dev);
+
+/**
* usb_emul_setup_device() - Set up a new USB device emulation
*
* This is normally called when a new emulation device is bound. It tells
@@ -943,7 +962,7 @@ int usb_alloc_device(struct usb_device *dev);
* @desc_list: List of points or USB descriptors, terminated by NULL.
* The first entry must be struct usb_device_descriptor,
* and others follow on after that.
- * @return 0 if OK, -ve on error
+ * @return 0 if OK, -ENOSYS if not implemented, other -ve on error
*/
int usb_emul_setup_device(struct udevice *dev, int maxpacketsize,
struct usb_string *strings, void **desc_list);
--
2.9.2
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