mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-04 18:41:03 +00:00
7e91f6ccdc
Add support for USB3 host and gadget driver. This is a direct sync of Linux kernel Cadence USB stack that from v5.4-rc1 release. Driver has been modified so that it compiles without errors against U-Boot code base. Features not required for U-Boot such as scatter-gather DMA and OTG interrupt handling has been dropped. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> [jjhiblot@ti.com: Add PHY support] Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Cadence USBSS DRD Header File.
|
|
*
|
|
* Copyright (C) 2017-2018 NXP
|
|
* Copyright (C) 2018-2019 Cadence.
|
|
*
|
|
* Authors: Peter Chen <peter.chen@nxp.com>
|
|
* Pawel Laszczak <pawell@cadence.com>
|
|
*/
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
#include <linux/usb/otg.h>
|
|
#include <generic-phy.h>
|
|
|
|
#ifndef __LINUX_CDNS3_CORE_H
|
|
#define __LINUX_CDNS3_CORE_H
|
|
|
|
enum usb_role {
|
|
USB_ROLE_NONE,
|
|
USB_ROLE_HOST,
|
|
USB_ROLE_DEVICE,
|
|
};
|
|
|
|
struct cdns3;
|
|
|
|
/**
|
|
* struct cdns3_role_driver - host/gadget role driver
|
|
* @start: start this role
|
|
* @stop: stop this role
|
|
* @suspend: suspend callback for this role
|
|
* @resume: resume callback for this role
|
|
* @irq: irq handler for this role
|
|
* @name: role name string (host/gadget)
|
|
* @state: current state
|
|
*/
|
|
struct cdns3_role_driver {
|
|
int (*start)(struct cdns3 *cdns);
|
|
void (*stop)(struct cdns3 *cdns);
|
|
int (*suspend)(struct cdns3 *cdns, bool do_wakeup);
|
|
int (*resume)(struct cdns3 *cdns, bool hibernated);
|
|
const char *name;
|
|
#define CDNS3_ROLE_STATE_INACTIVE 0
|
|
#define CDNS3_ROLE_STATE_ACTIVE 1
|
|
int state;
|
|
};
|
|
|
|
#define CDNS3_XHCI_RESOURCES_NUM 2
|
|
/**
|
|
* struct cdns3 - Representation of Cadence USB3 DRD controller.
|
|
* @dev: pointer to Cadence device struct
|
|
* @xhci_regs: pointer to base of xhci registers
|
|
* @dev_regs: pointer to base of dev registers
|
|
* @otg_v0_regs: pointer to base of v0 otg registers
|
|
* @otg_v1_regs: pointer to base of v1 otg registers
|
|
* @otg_regs: pointer to base of otg registers
|
|
* @otg_irq: irq number for otg controller
|
|
* @dev_irq: irq number for device controller
|
|
* @roles: array of supported roles for this controller
|
|
* @role: current role
|
|
* @host_dev: the child host device pointer for cdns3 core
|
|
* @gadget_dev: the child gadget device pointer for cdns3 core
|
|
* @usb2_phy: pointer to USB2 PHY
|
|
* @usb3_phy: pointer to USB3 PHY
|
|
* @mutex: the mutex for concurrent code at driver
|
|
* @dr_mode: supported mode of operation it can be only Host, only Device
|
|
* or OTG mode that allow to switch between Device and Host mode.
|
|
* This field based on firmware setting, kernel configuration
|
|
* and hardware configuration.
|
|
* @role_sw: pointer to role switch object.
|
|
* @role_override: set 1 if role rely on SW.
|
|
*/
|
|
struct cdns3 {
|
|
struct udevice *dev;
|
|
void __iomem *xhci_regs;
|
|
struct cdns3_usb_regs __iomem *dev_regs;
|
|
|
|
struct cdns3_otg_legacy_regs *otg_v0_regs;
|
|
struct cdns3_otg_regs *otg_v1_regs;
|
|
struct cdns3_otg_common_regs *otg_regs;
|
|
#define CDNS3_CONTROLLER_V0 0
|
|
#define CDNS3_CONTROLLER_V1 1
|
|
u32 version;
|
|
|
|
int otg_irq;
|
|
int dev_irq;
|
|
struct cdns3_role_driver *roles[USB_ROLE_DEVICE + 1];
|
|
enum usb_role role;
|
|
struct cdns3_device *gadget_dev;
|
|
struct phy usb2_phy;
|
|
struct phy usb3_phy;
|
|
/* mutext used in workqueue*/
|
|
struct mutex mutex;
|
|
enum usb_dr_mode dr_mode;
|
|
int role_override;
|
|
};
|
|
|
|
int cdns3_hw_role_switch(struct cdns3 *cdns);
|
|
|
|
/**
|
|
* cdns3_bind - generic bind function
|
|
* @parent - pointer to parent udevice of which cdns3 USB controller
|
|
* node is child of
|
|
*
|
|
* return 0 on success, negative errno otherwise
|
|
*/
|
|
int cdns3_bind(struct udevice *dev);
|
|
#endif /* __LINUX_CDNS3_CORE_H */
|