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| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2014-10-13 03:53:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-04 00:34:00 +0100 |
| commit | 11a7e59405148c855e0a9d13588930ccec02c150 (patch) | |
| tree | a8e21a87496d8ec3fee589dfea21766d2813d58f /include | |
| parent | uas: Make uas work with blk-mq (diff) | |
| download | linux-11a7e59405148c855e0a9d13588930ccec02c150.tar.xz linux-11a7e59405148c855e0a9d13588930ccec02c150.zip | |
usb: ehci: add ehci_port_power interface
The current EHCI implementation is prepared to toggle the
PORT_POWER bit to enable or disable a USB-Port. In some
cases this port power can not be just toggled by the PORT_POWER
bit, and the gpio-regulator is needed to be toggled too.
This patch defines a port power control interface ehci_port_power for
ehci core use, it toggles PORT_POWER bit as well as calls platform
defined .port_power if it is defined.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/usb/hcd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index cd96a2bc3388..9cf7e3594609 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -379,6 +379,9 @@ struct hc_driver { int (*disable_usb3_lpm_timeout)(struct usb_hcd *, struct usb_device *, enum usb3_link_state state); int (*find_raw_port_number)(struct usb_hcd *, int); + /* Call for power on/off the port if necessary */ + int (*port_power)(struct usb_hcd *hcd, int portnum, bool enable); + }; static inline int hcd_giveback_urb_in_bh(struct usb_hcd *hcd) |