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usb: ehci: add ehci_port_power interface

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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>
This commit is contained in:
Michael Grzeschik
2014-10-13 09:53:03 +08:00
committed by Greg Kroah-Hartman
parent e28e2f2f7c
commit 11a7e59405
4 changed files with 45 additions and 14 deletions
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2
drivers/usb/host/ehci.h
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@@ -859,6 +859,8 @@ static inline u32 hc32_to_cpup (const struct ehci_hcd *ehci, const __hc32 *x)
struct ehci_driver_overrides {
size_t extra_priv_size;
int (*reset)(struct usb_hcd *hcd);
int (*port_power)(struct usb_hcd *hcd,
int portnum, bool enable);
};
extern void ehci_init_driver(struct hc_driver *drv,