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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011 Marvell International Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __MV_USB_OTG_CONTROLLER__
#define __MV_USB_OTG_CONTROLLER__
#include <linux/types.h>
/* Command Register Bit Masks */
#define USBCMD_RUN_STOP (0x00000001)
#define USBCMD_CTRL_RESET (0x00000002)
/* otgsc Register Bit Masks */
#define OTGSC_CTRL_VUSB_DISCHARGE 0x00000001
#define OTGSC_CTRL_VUSB_CHARGE 0x00000002
#define OTGSC_CTRL_OTG_TERM 0x00000008
#define OTGSC_CTRL_DATA_PULSING 0x00000010
#define OTGSC_STS_USB_ID 0x00000100
#define OTGSC_STS_A_VBUS_VALID 0x00000200
#define OTGSC_STS_A_SESSION_VALID 0x00000400
#define OTGSC_STS_B_SESSION_VALID 0x00000800
#define OTGSC_STS_B_SESSION_END 0x00001000
#define OTGSC_STS_1MS_TOGGLE 0x00002000
#define OTGSC_STS_DATA_PULSING 0x00004000
#define OTGSC_INTSTS_USB_ID 0x00010000
#define OTGSC_INTSTS_A_VBUS_VALID 0x00020000
#define OTGSC_INTSTS_A_SESSION_VALID 0x00040000
#define OTGSC_INTSTS_B_SESSION_VALID 0x00080000
#define OTGSC_INTSTS_B_SESSION_END 0x00100000
#define OTGSC_INTSTS_1MS 0x00200000
#define OTGSC_INTSTS_DATA_PULSING 0x00400000
#define OTGSC_INTR_USB_ID 0x01000000
#define OTGSC_INTR_A_VBUS_VALID 0x02000000
#define OTGSC_INTR_A_SESSION_VALID 0x04000000
#define OTGSC_INTR_B_SESSION_VALID 0x08000000
#define OTGSC_INTR_B_SESSION_END 0x10000000
#define OTGSC_INTR_1MS_TIMER 0x20000000
#define OTGSC_INTR_DATA_PULSING 0x40000000
#define CAPLENGTH_MASK (0xff)
/* Timer's interval, unit 10ms */
#define T_A_WAIT_VRISE 100
#define T_A_WAIT_BCON 2000
#define T_A_AIDL_BDIS 100
#define T_A_BIDL_ADIS 20
#define T_B_ASE0_BRST 400
#define T_B_SE0_SRP 300
#define T_B_SRP_FAIL 2000
#define T_B_DATA_PLS 10
#define T_B_SRP_INIT 100
#define T_A_SRP_RSPNS 10
#define T_A_DRV_RSM 5
enum otg_function {
OTG_B_DEVICE = 0,
OTG_A_DEVICE
};
enum mv_otg_timer {
A_WAIT_BCON_TIMER = 0,
OTG_TIMER_NUM
};
/* PXA OTG state machine */
struct mv_otg_ctrl {
/* internal variables */
u8 a_set_b_hnp_en; /* A-Device set b_hnp_en */
u8 b_srp_done;
u8 b_hnp_en;
/* OTG inputs */
u8 a_bus_drop;
u8 a_bus_req;
u8 a_clr_err;
u8 a_bus_resume;
u8 a_bus_suspend;
u8 a_conn;
u8 a_sess_vld;
u8 a_srp_det;
u8 a_vbus_vld;
u8 b_bus_req; /* B-Device Require Bus */
u8 b_bus_resume;
u8 b_bus_suspend;
u8 b_conn;
u8 b_se0_srp;
u8 b_sess_end;
u8 b_sess_vld;
u8 id;
u8 a_suspend_req;
/*Timer event */
u8 a_aidl_bdis_timeout;
u8 b_ase0_brst_timeout;
u8 a_bidl_adis_timeout;
u8 a_wait_bcon_timeout;
struct timer_list timer[OTG_TIMER_NUM];
};
#define VUSBHS_MAX_PORTS 8
struct mv_otg_regs {
u32 usbcmd; /* Command register */
u32 usbsts; /* Status register */
u32 usbintr; /* Interrupt enable */
u32 frindex; /* Frame index */
u32 reserved1[1];
u32 deviceaddr; /* Device Address */
u32 eplistaddr; /* Endpoint List Address */
u32 ttctrl; /* HOST TT status and control */
u32 burstsize; /* Programmable Burst Size */
u32 txfilltuning; /* Host Transmit Pre-Buffer Packet Tuning */
u32 reserved[4];
u32 epnak; /* Endpoint NAK */
u32 epnaken; /* Endpoint NAK Enable */
u32 configflag; /* Configured Flag register */
u32 portsc[VUSBHS_MAX_PORTS]; /* Port Status/Control x, x = 1..8 */
u32 otgsc;
u32 usbmode; /* USB Host/Device mode */
u32 epsetupstat; /* Endpoint Setup Status */
u32 epprime; /* Endpoint Initialize */
u32 epflush; /* Endpoint De-initialize */
u32 epstatus; /* Endpoint Status */
u32 epcomplete; /* Endpoint Interrupt On Complete */
u32 epctrlx[16]; /* Endpoint Control, where x = 0.. 15 */
u32 mcr; /* Mux Control */
u32 isr; /* Interrupt Status */
u32 ier; /* Interrupt Enable */
};
struct mv_otg {
struct usb_phy phy;
struct mv_otg_ctrl otg_ctrl;
/* base address */
void __iomem *phy_regs;
void __iomem *cap_regs;
struct mv_otg_regs __iomem *op_regs;
struct platform_device *pdev;
int irq;
u32 irq_status;
u32 irq_en;
struct delayed_work work;
struct workqueue_struct *qwork;
spinlock_t wq_lock;
struct mv_usb_platform_data *pdata;
unsigned int active;
unsigned int clock_gating;
struct clk *clk;
};
#endif
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