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authorMichael Grzeschik <m.grzeschik@pengutronix.de>2014-10-13 05:53:03 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-11-04 02:34:00 +0300
commit11a7e59405148c855e0a9d13588930ccec02c150 (patch)
treea8e21a87496d8ec3fee589dfea21766d2813d58f /include/linux/usb/hcd.h
parente28e2f2f7c42e5b9dd4c965a0245267e44a8a7ae (diff)
downloadlinux-11a7e59405148c855e0a9d13588930ccec02c150.tar.xz
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/linux/usb/hcd.h')
-rw-r--r--include/linux/usb/hcd.h3
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)