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