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xhci: Add hub_control to xhci_driver_overrides

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Add a hub_control() callback to the xhci_driver_overrides structure to
allow host drivers to override the default hub_control function. This
is required for Tegra which requires device specific actions for power
management to be executed during USB state transitions.

Signed-off-by: Jim Lin <jilin@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20221111101813.32482-2-jilin@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jim Lin 2022-11-11 18:18:11 +08:00 committed by Greg Kroah-Hartman
parent ee0e40efc4
commit 592338dde8
2 changed files with 4 additions and 0 deletions
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2
drivers/usb/host/xhci.c
View file

@ -5502,6 +5502,8 @@ void xhci_init_driver(struct hc_driver *drv,
drv->check_bandwidth = over->check_bandwidth;
if (over->reset_bandwidth)
drv->reset_bandwidth = over->reset_bandwidth;
if (over->hub_control)
drv->hub_control = over->hub_control;
}
}
EXPORT_SYMBOL_GPL(xhci_init_driver);

2
drivers/usb/host/xhci.h
View file

@ -1943,6 +1943,8 @@ struct xhci_driver_overrides {
struct usb_host_endpoint *ep);
int (*check_bandwidth)(struct usb_hcd *, struct usb_device *);
void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *);
int (*hub_control)(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wIndex, char *buf, u16 wLength);
};
#define XHCI_CFC_DELAY 10