53a2d95df8
In Realtek SoC, the parameter of usb phy is designed to can dynamic tuning base on port status. Therefore, add a notify callback of generic phy driver when usb device connect and disconnect change. The Realtek phy driver is designed to dynamically adjust disconnection level and calibrate phy parameters. When the device connected bit changes and when the disconnected bit changes, do connection change notification: Check if portstatus is USB_PORT_STAT_CONNECTION and portchange is USB_PORT_STAT_C_CONNECTION. 1. The device is connected, the driver lowers the disconnection level and calibrates the phy parameters. 2. The device disconnects, the driver increases the disconnect level and calibrates the phy parameters. Generic phy driver in usb core framework does not support device connect and disconnect notifications. Therefore, we add an api to notify phy the connection changes. Additionally, the generic phy only specifies primary_hcd in the original design. Added specific "usb2-phy" on primary_hcd and "usb3-phy" on shared_hcd. Signed-off-by: Stanley Chang <stanley_chang@realtek.com> Link: https://lore.kernel.org/r/20231213031203.4911-4-stanley_chang@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
34 lines
1.2 KiB
C
34 lines
1.2 KiB
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);
|
|
struct usb_phy_roothub *usb_phy_roothub_alloc_usb3_phy(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_notify_connect(struct usb_phy_roothub *phy_roothub, int port);
|
|
int usb_phy_roothub_notify_disconnect(struct usb_phy_roothub *phy_roothub, int port);
|
|
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_ */
|