linux/drivers/usb/core/phy.h
Marek Szyprowski 34c7ed72f4 usb: core: phy: add support for PHY calibration
Some PHYs (for example Exynos5 USB3.0 DRD PHY) require calibration to be
done after every USB HCD reset. Generic PHY framework has been already
extended with phy_calibrate() function in commit 36914111e6 ("drivers:
phy: add calibrate method"). This patch adds support for it to generic
PHY handling code in USB HCD core.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Tested-by: Jochen Sprickerhof <jochen@sprickerhof.de>
Link: https://lore.kernel.org/r/20190829053028.32438-2-m.szyprowski@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-03 15:54:55 +02:00

31 lines
979 B
C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* USB roothub wrapper
*
* Copyright (C) 2018 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
*/
#ifndef __USB_CORE_PHY_H_
#define __USB_CORE_PHY_H_
struct device;
struct usb_phy_roothub;
struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev);
int usb_phy_roothub_init(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_exit(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_set_mode(struct usb_phy_roothub *phy_roothub,
enum phy_mode mode);
int usb_phy_roothub_calibrate(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_power_on(struct usb_phy_roothub *phy_roothub);
void usb_phy_roothub_power_off(struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_suspend(struct device *controller_dev,
struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_resume(struct device *controller_dev,
struct usb_phy_roothub *phy_roothub);
#endif /* __USB_CORE_PHY_H_ */