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dm: usb: Add a new USB controller operation 'update_hub_device' 

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.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2017-07-19 21:51:17 +08:00 committed by Marek Vasut
parent 5624dfd5aa
commit 9ca1b4bab1
2 changed files with 31 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/usb/host/usb-uclass.c
View File

@ -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;

21
include/usb.h
View File

@ -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)
@ -930,6 +938,17 @@ 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
*
@ -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);