diff options
| author | Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> | 2015-10-12 12:07:34 -0400 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2016-05-11 13:45:57 -0700 |
| commit | a92eb547868a5d0dd631a9ed215373d5793bdade (patch) | |
| tree | eb5ba47707538943193f86da12be8d922c6eae8e /include/linux | |
| parent | 094903a4eeb1725ca9b5ebdab72fd23a795fec7f (diff) | |
hikey: handle usb bus speed switch
HiKey usb host ports can unfortunately can only support
one usb speed at a time.
This patch adds usb speed auto-negotiation to Hikey, so
by default, the ports will run at highspeed, but when
low-speed devices are plugged in, the host ports will
downgrade to low-speed.
Change-Id: I94e0c7b85c365ce718e44e34c72f317e9a9da261
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/usb/hcd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index f89c24bd53a4..bdd02cc5d856 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -396,6 +396,7 @@ struct hc_driver { /* Call for power on/off the port if necessary */ int (*port_power)(struct usb_hcd *hcd, int portnum, bool enable); + void (*change_bus_speed)(struct usb_hcd *hcd, int speed); }; static inline int hcd_giveback_urb_in_bh(struct usb_hcd *hcd) |