/* SPDX-License-Identifier: GPL-2.0 */
/*
 * MUSB OTG driver register defines
 *
 * Copyright 2005 Mentor Graphics Corporation
 * Copyright (C) 2005-2006 by Texas Instruments
 * Copyright (C) 2006-2007 Nokia Corporation
 */

#ifndef __MUSB_REGS_H__
#define __MUSB_REGS_H__

#define MUSB_EP0_FIFOSIZE       64      /* This is non-configurable */

/*
 * MUSB Register bits
 */

/* POWER */
#define MUSB_POWER_ISOUPDATE    0x80
#define MUSB_POWER_SOFTCONN     0x40
#define MUSB_POWER_HSENAB       0x20
#define MUSB_POWER_HSMODE       0x10
#define MUSB_POWER_RESET        0x08
#define MUSB_POWER_RESUME       0x04
#define MUSB_POWER_SUSPENDM     0x02
#define MUSB_POWER_ENSUSPEND    0x01

/* INTRUSB */
#define MUSB_INTR_SUSPEND       0x01
#define MUSB_INTR_RESUME        0x02
#define MUSB_INTR_RESET         0x04
#define MUSB_INTR_BABBLE        0x04
#define MUSB_INTR_SOF           0x08
#define MUSB_INTR_CONNECT       0x10
#define MUSB_INTR_DISCONNECT    0x20
#define MUSB_INTR_SESSREQ       0x40
#define MUSB_INTR_VBUSERROR     0x80    /* For SESSION end */

/* DEVCTL */
#define MUSB_DEVCTL_BDEVICE     0x80
#define MUSB_DEVCTL_FSDEV       0x40
#define MUSB_DEVCTL_LSDEV       0x20
#define MUSB_DEVCTL_VBUS        0x18
#define MUSB_DEVCTL_VBUS_SHIFT  3
#define MUSB_DEVCTL_HM          0x04
#define MUSB_DEVCTL_HR          0x02
#define MUSB_DEVCTL_SESSION     0x01

/* MUSB ULPI VBUSCONTROL */
#define MUSB_ULPI_USE_EXTVBUS   0x01
#define MUSB_ULPI_USE_EXTVBUSIND 0x02
/* ULPI_REG_CONTROL */
#define MUSB_ULPI_REG_REQ       (1 << 0)
#define MUSB_ULPI_REG_CMPLT     (1 << 1)
#define MUSB_ULPI_RDN_WR        (1 << 2)

/* TESTMODE */
#define MUSB_TEST_FORCE_HOST    0x80
#define MUSB_TEST_FIFO_ACCESS   0x40
#define MUSB_TEST_FORCE_FS      0x20
#define MUSB_TEST_FORCE_HS      0x10
#define MUSB_TEST_PACKET        0x08
#define MUSB_TEST_K             0x04
#define MUSB_TEST_J             0x02
#define MUSB_TEST_SE0_NAK       0x01

/* Allocate for double-packet buffering (effectively doubles assigned _SIZE) */
#define MUSB_FIFOSZ_DPB 0x10
/* Allocation size (8, 16, 32, ... 4096) */
#define MUSB_FIFOSZ_SIZE        0x0f

/* CSR0 */
#define MUSB_CSR0_FLUSHFIFO     0x0100
#define MUSB_CSR0_TXPKTRDY      0x0002
#define MUSB_CSR0_RXPKTRDY      0x0001

/* CSR0 in Peripheral mode */
#define MUSB_CSR0_P_SVDSETUPEND 0x0080
#define MUSB_CSR0_P_SVDRXPKTRDY 0x0040
#define MUSB_CSR0_P_SENDSTALL   0x0020
#define MUSB_CSR0_P_SETUPEND    0x0010
#define MUSB_CSR0_P_DATAEND     0x0008
#define MUSB_CSR0_P_SENTSTALL   0x0004

/* CSR0 in Host mode */
#define MUSB_CSR0_H_DIS_PING            0x0800
#define MUSB_CSR0_H_WR_DATATOGGLE       0x0400  /* Set to allow setting: */
#define MUSB_CSR0_H_DATATOGGLE          0x0200  /* Data toggle control */
#define MUSB_CSR0_H_NAKTIMEOUT          0x0080
#define MUSB_CSR0_H_STATUSPKT           0x0040
#define MUSB_CSR0_H_REQPKT              0x0020
#define MUSB_CSR0_H_ERROR               0x0010
#define MUSB_CSR0_H_SETUPPKT            0x0008
#define MUSB_CSR0_H_RXSTALL             0x0004

/* CSR0 bits to avoid zeroing (write zero clears, write 1 ignored) */
#define MUSB_CSR0_P_WZC_BITS    \
        (MUSB_CSR0_P_SENTSTALL)
#define MUSB_CSR0_H_WZC_BITS    \
        (MUSB_CSR0_H_NAKTIMEOUT | MUSB_CSR0_H_RXSTALL \
        | MUSB_CSR0_RXPKTRDY)

/* TxType/RxType */
#define MUSB_TYPE_SPEED         0xc0
#define MUSB_TYPE_SPEED_SHIFT   6
#define MUSB_TYPE_PROTO         0x30    /* Implicitly zero for ep0 */
#define MUSB_TYPE_PROTO_SHIFT   4
#define MUSB_TYPE_REMOTE_END    0xf     /* Implicitly zero for ep0 */

/* CONFIGDATA */
#define MUSB_CONFIGDATA_MPRXE           0x80    /* Auto bulk pkt combining */
#define MUSB_CONFIGDATA_MPTXE           0x40    /* Auto bulk pkt splitting */
#define MUSB_CONFIGDATA_BIGENDIAN       0x20
#define MUSB_CONFIGDATA_HBRXE           0x10    /* HB-ISO for RX */
#define MUSB_CONFIGDATA_HBTXE           0x08    /* HB-ISO for TX */
#define MUSB_CONFIGDATA_DYNFIFO         0x04    /* Dynamic FIFO sizing */
#define MUSB_CONFIGDATA_SOFTCONE        0x02    /* SoftConnect */
#define MUSB_CONFIGDATA_UTMIDW          0x01    /* Data width 0/1 => 8/16bits */

/* TXCSR in Peripheral and Host mode */
#define MUSB_TXCSR_AUTOSET              0x8000
#define MUSB_TXCSR_DMAENAB              0x1000
#define MUSB_TXCSR_FRCDATATOG           0x0800
#define MUSB_TXCSR_DMAMODE              0x0400
#define MUSB_TXCSR_CLRDATATOG           0x0040
#define MUSB_TXCSR_FLUSHFIFO            0x0008
#define MUSB_TXCSR_FIFONOTEMPTY         0x0002
#define MUSB_TXCSR_TXPKTRDY             0x0001

/* TXCSR in Peripheral mode */
#define MUSB_TXCSR_P_ISO                0x4000
#define MUSB_TXCSR_P_INCOMPTX           0x0080
#define MUSB_TXCSR_P_SENTSTALL          0x0020
#define MUSB_TXCSR_P_SENDSTALL          0x0010
#define MUSB_TXCSR_P_UNDERRUN           0x0004

/* TXCSR in Host mode */
#define MUSB_TXCSR_H_WR_DATATOGGLE      0x0200
#define MUSB_TXCSR_H_DATATOGGLE         0x0100
#define MUSB_TXCSR_H_NAKTIMEOUT         0x0080
#define MUSB_TXCSR_H_RXSTALL            0x0020
#define MUSB_TXCSR_H_ERROR              0x0004

/* TXCSR bits to avoid zeroing (write zero clears, write 1 ignored) */
#define MUSB_TXCSR_P_WZC_BITS   \
        (MUSB_TXCSR_P_INCOMPTX | MUSB_TXCSR_P_SENTSTALL \
        | MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_FIFONOTEMPTY)
#define MUSB_TXCSR_H_WZC_BITS   \
        (MUSB_TXCSR_H_NAKTIMEOUT | MUSB_TXCSR_H_RXSTALL \
        | MUSB_TXCSR_H_ERROR | MUSB_TXCSR_FIFONOTEMPTY)

/* RXCSR in Peripheral and Host mode */
#define MUSB_RXCSR_AUTOCLEAR            0x8000
#define MUSB_RXCSR_DMAENAB              0x2000
#define MUSB_RXCSR_DISNYET              0x1000
#define MUSB_RXCSR_PID_ERR              0x1000
#define MUSB_RXCSR_DMAMODE              0x0800
#define MUSB_RXCSR_INCOMPRX             0x0100
#define MUSB_RXCSR_CLRDATATOG           0x0080
#define MUSB_RXCSR_FLUSHFIFO            0x0010
#define MUSB_RXCSR_DATAERROR            0x0008
#define MUSB_RXCSR_FIFOFULL             0x0002
#define MUSB_RXCSR_RXPKTRDY             0x0001

/* RXCSR in Peripheral mode */
#define MUSB_RXCSR_P_ISO                0x4000
#define MUSB_RXCSR_P_SENTSTALL          0x0040
#define MUSB_RXCSR_P_SENDSTALL          0x0020
#define MUSB_RXCSR_P_OVERRUN            0x0004

/* RXCSR in Host mode */
#define MUSB_RXCSR_H_AUTOREQ            0x4000
#define MUSB_RXCSR_H_WR_DATATOGGLE      0x0400
#define MUSB_RXCSR_H_DATATOGGLE         0x0200
#define MUSB_RXCSR_H_RXSTALL            0x0040
#define MUSB_RXCSR_H_REQPKT             0x0020
#define MUSB_RXCSR_H_ERROR              0x0004

/* RXCSR bits to avoid zeroing (write zero clears, write 1 ignored) */
#define MUSB_RXCSR_P_WZC_BITS   \
        (MUSB_RXCSR_P_SENTSTALL | MUSB_RXCSR_P_OVERRUN \
        | MUSB_RXCSR_RXPKTRDY)
#define MUSB_RXCSR_H_WZC_BITS   \
        (MUSB_RXCSR_H_RXSTALL | MUSB_RXCSR_H_ERROR \
        | MUSB_RXCSR_DATAERROR | MUSB_RXCSR_RXPKTRDY)

/* HUBADDR */
#define MUSB_HUBADDR_MULTI_TT           0x80


/* SUNXI has different reg addresses, but identical r/w functions */
#ifndef CONFIG_ARCH_SUNXI

/*
 * Common USB registers
 */

#define MUSB_FADDR              0x00    /* 8-bit */
#define MUSB_POWER              0x01    /* 8-bit */

#define MUSB_INTRTX             0x02    /* 16-bit */
#define MUSB_INTRRX             0x04
#define MUSB_INTRTXE            0x06
#define MUSB_INTRRXE            0x08
#define MUSB_INTRUSB            0x0A    /* 8 bit */
#define MUSB_INTRUSBE           0x0B    /* 8 bit */
#define MUSB_FRAME              0x0C
#define MUSB_INDEX              0x0E    /* 8 bit */
#define MUSB_TESTMODE           0x0F    /* 8 bit */

/* Get offset for a given FIFO from musb->mregs */
#if defined(CONFIG_USB_MUSB_TUSB6010) ||        \
        defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
#define MUSB_FIFO_OFFSET(epnum) (0x200 + ((epnum) * 0x20))
#else
#define MUSB_FIFO_OFFSET(epnum) (0x20 + ((epnum) * 4))
#endif

/*
 * Additional Control Registers
 */

#define MUSB_DEVCTL             0x60    /* 8 bit */

/* These are always controlled through the INDEX register */
#define MUSB_TXFIFOSZ           0x62    /* 8-bit (see masks) */
#define MUSB_RXFIFOSZ           0x63    /* 8-bit (see masks) */
#define MUSB_TXFIFOADD          0x64    /* 16-bit offset shifted right 3 */
#define MUSB_RXFIFOADD          0x66    /* 16-bit offset shifted right 3 */

/* REVISIT: vctrl/vstatus: optional vendor utmi+phy register at 0x68 */
#define MUSB_HWVERS             0x6C    /* 8 bit */
#define MUSB_ULPI_BUSCONTROL    0x70    /* 8 bit */
#define MUSB_ULPI_INT_MASK      0x72    /* 8 bit */
#define MUSB_ULPI_INT_SRC       0x73    /* 8 bit */
#define MUSB_ULPI_REG_DATA      0x74    /* 8 bit */
#define MUSB_ULPI_REG_ADDR      0x75    /* 8 bit */
#define MUSB_ULPI_REG_CONTROL   0x76    /* 8 bit */
#define MUSB_ULPI_RAW_DATA      0x77    /* 8 bit */

#define MUSB_EPINFO             0x78    /* 8 bit */
#define MUSB_RAMINFO            0x79    /* 8 bit */
#define MUSB_LINKINFO           0x7a    /* 8 bit */
#define MUSB_VPLEN              0x7b    /* 8 bit */
#define MUSB_HS_EOF1            0x7c    /* 8 bit */
#define MUSB_FS_EOF1            0x7d    /* 8 bit */
#define MUSB_LS_EOF1            0x7e    /* 8 bit */

/* Offsets to endpoint registers */
#define MUSB_TXMAXP             0x00
#define MUSB_TXCSR              0x02
#define MUSB_CSR0               MUSB_TXCSR      /* Re-used for EP0 */
#define MUSB_RXMAXP             0x04
#define MUSB_RXCSR              0x06
#define MUSB_RXCOUNT            0x08
#define MUSB_COUNT0             MUSB_RXCOUNT    /* Re-used for EP0 */
#define MUSB_TXTYPE             0x0A
#define MUSB_TYPE0              MUSB_TXTYPE     /* Re-used for EP0 */
#define MUSB_TXINTERVAL         0x0B
#define MUSB_NAKLIMIT0          MUSB_TXINTERVAL /* Re-used for EP0 */
#define MUSB_RXTYPE             0x0C
#define MUSB_RXINTERVAL         0x0D
#define MUSB_FIFOSIZE           0x0F
#define MUSB_CONFIGDATA         MUSB_FIFOSIZE   /* Re-used for EP0 */

/* Offsets to endpoint registers in indexed model (using INDEX register) */
#define MUSB_INDEXED_OFFSET(_epnum, _offset)    \
        (0x10 + (_offset))

/* Offsets to endpoint registers in flat models */
#define MUSB_FLAT_OFFSET(_epnum, _offset)       \
        (0x100 + (0x10*(_epnum)) + (_offset))

#if defined(CONFIG_USB_MUSB_TUSB6010) ||        \
        defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
/* TUSB6010 EP0 configuration register is special */
#define MUSB_TUSB_OFFSET(_epnum, _offset)       \
        (0x10 + _offset)
#include "tusb6010.h"           /* Needed "only" for TUSB_EP0_CONF */
#endif

#define MUSB_TXCSR_MODE                 0x2000

/* "bus control"/target registers, for host side multipoint (external hubs) */
#define MUSB_TXFUNCADDR         0x00
#define MUSB_TXHUBADDR          0x02
#define MUSB_TXHUBPORT          0x03

#define MUSB_RXFUNCADDR         0x04
#define MUSB_RXHUBADDR          0x06
#define MUSB_RXHUBPORT          0x07

#define MUSB_BUSCTL_OFFSET(_epnum, _offset) \
        (0x80 + (8*(_epnum)) + (_offset))

#else /* CONFIG_ARCH_SUNXI */

/*
 * Common USB registers
 */

#define MUSB_FADDR              0x0098
#define MUSB_POWER              0x0040

#define MUSB_INTRTX             0x0044
#define MUSB_INTRRX             0x0046
#define MUSB_INTRTXE            0x0048
#define MUSB_INTRRXE            0x004A
#define MUSB_INTRUSB            0x004C
#define MUSB_INTRUSBE           0x0050
#define MUSB_FRAME              0x0054
#define MUSB_INDEX              0x0042
#define MUSB_TESTMODE           0x007C

/* Get offset for a given FIFO from musb->mregs */
#define MUSB_FIFO_OFFSET(epnum) (0x00 + ((epnum) * 4))

/*
 * Additional Control Registers
 */

#define MUSB_DEVCTL             0x0041

/* These are always controlled through the INDEX register */
#define MUSB_TXFIFOSZ           0x0090
#define MUSB_RXFIFOSZ           0x0094
#define MUSB_TXFIFOADD          0x0092
#define MUSB_RXFIFOADD          0x0096

#define MUSB_EPINFO             0x0078
#define MUSB_RAMINFO            0x0079
#define MUSB_LINKINFO           0x007A
#define MUSB_VPLEN              0x007B
#define MUSB_HS_EOF1            0x007C
#define MUSB_FS_EOF1            0x007D
#define MUSB_LS_EOF1            0x007E

/* Offsets to endpoint registers */
#define MUSB_TXMAXP             0x0080
#define MUSB_TXCSR              0x0082
#define MUSB_CSR0               0x0082
#define MUSB_RXMAXP             0x0084
#define MUSB_RXCSR              0x0086
#define MUSB_RXCOUNT            0x0088
#define MUSB_COUNT0             0x0088
#define MUSB_TXTYPE             0x008C
#define MUSB_TYPE0              0x008C
#define MUSB_TXINTERVAL         0x008D
#define MUSB_NAKLIMIT0          0x008D
#define MUSB_RXTYPE             0x008E
#define MUSB_RXINTERVAL         0x008F

#define MUSB_CONFIGDATA         0x00b0 /* musb_read_configdata adds 0x10 ! */
#define MUSB_FIFOSIZE           0x0090

/* Offsets to endpoint registers in indexed model (using INDEX register) */
#define MUSB_INDEXED_OFFSET(_epnum, _offset) (_offset)

#define MUSB_TXCSR_MODE         0x2000

/* "bus control"/target registers, for host side multipoint (external hubs) */
#define MUSB_TXFUNCADDR         0x0098
#define MUSB_TXHUBADDR          0x009A
#define MUSB_TXHUBPORT          0x009B

#define MUSB_RXFUNCADDR         0x009C
#define MUSB_RXHUBADDR          0x009E
#define MUSB_RXHUBPORT          0x009F

/* Endpoint is selected with MUSB_INDEX. */
#define MUSB_BUSCTL_OFFSET(_epnum, _offset) (_offset)

#endif /* CONFIG_ARCH_SUNXI */

static inline void musb_write_txfifosz(void __iomem *mbase, u8 c_size)
{
        musb_writeb(mbase, MUSB_TXFIFOSZ, c_size);
}

static inline void musb_write_txfifoadd(void __iomem *mbase, u16 c_off)
{
        musb_writew(mbase, MUSB_TXFIFOADD, c_off);
}

static inline void musb_write_rxfifosz(void __iomem *mbase, u8 c_size)
{
        musb_writeb(mbase, MUSB_RXFIFOSZ, c_size);
}

static inline void  musb_write_rxfifoadd(void __iomem *mbase, u16 c_off)
{
        musb_writew(mbase, MUSB_RXFIFOADD, c_off);
}

static inline void musb_write_ulpi_buscontrol(void __iomem *mbase, u8 val)
{
#ifndef CONFIG_ARCH_SUNXI /* No ulpi on sunxi */
        musb_writeb(mbase, MUSB_ULPI_BUSCONTROL, val);
#endif
}

static inline u8 musb_read_txfifosz(void __iomem *mbase)
{
        return musb_readb(mbase, MUSB_TXFIFOSZ);
}

static inline u16 musb_read_txfifoadd(void __iomem *mbase)
{
        return musb_readw(mbase, MUSB_TXFIFOADD);
}

static inline u8 musb_read_rxfifosz(void __iomem *mbase)
{
        return musb_readb(mbase, MUSB_RXFIFOSZ);
}

static inline u16  musb_read_rxfifoadd(void __iomem *mbase)
{
        return musb_readw(mbase, MUSB_RXFIFOADD);
}

static inline u8 musb_read_ulpi_buscontrol(void __iomem *mbase)
{
#ifdef CONFIG_ARCH_SUNXI /* No ulpi on sunxi */
        return 0;
#else
        return musb_readb(mbase, MUSB_ULPI_BUSCONTROL);
#endif
}

static inline u8 musb_read_configdata(void __iomem *mbase)
{
#ifdef CONFIG_USB_MUSB_FIXED_CONFIGDATA
        /* <Sigh> allwinner saves a reg, and we need to hardcode this */
        return 0xde;
#else
        musb_writeb(mbase, MUSB_INDEX, 0);
        return musb_readb(mbase, 0x10 + MUSB_CONFIGDATA);
#endif
}

static inline u16 musb_read_hwvers(void __iomem *mbase)
{
#ifdef CONFIG_ARCH_SUNXI
        return 0; /* Unknown version */
#else
        return musb_readw(mbase, MUSB_HWVERS);
#endif
}

static inline void __iomem *musb_read_target_reg_base(u8 i, void __iomem *mbase)
{
        return (MUSB_BUSCTL_OFFSET(i, 0) + mbase);
}

static inline void musb_write_rxfunaddr(void __iomem *ep_target_regs,
                u8 qh_addr_reg)
{
        musb_writeb(ep_target_regs, MUSB_RXFUNCADDR, qh_addr_reg);
}

static inline void musb_write_rxhubaddr(void __iomem *ep_target_regs,
                u8 qh_h_addr_reg)
{
        musb_writeb(ep_target_regs, MUSB_RXHUBADDR, qh_h_addr_reg);
}

static inline void musb_write_rxhubport(void __iomem *ep_target_regs,
                u8 qh_h_port_reg)
{
        musb_writeb(ep_target_regs, MUSB_RXHUBPORT, qh_h_port_reg);
}

static inline void  musb_write_txfunaddr(void __iomem *mbase, u8 epnum,
                u8 qh_addr_reg)
{
        musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXFUNCADDR),
                        qh_addr_reg);
}

static inline void  musb_write_txhubaddr(void __iomem *mbase, u8 epnum,
                u8 qh_addr_reg)
{
        musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBADDR),
                        qh_addr_reg);
}

static inline void  musb_write_txhubport(void __iomem *mbase, u8 epnum,
                u8 qh_h_port_reg)
{
        musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBPORT),
                        qh_h_port_reg);
}

static inline u8 musb_read_rxfunaddr(void __iomem *mbase, u8 epnum)
{
        return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXFUNCADDR));
}

static inline u8 musb_read_rxhubaddr(void __iomem *mbase, u8 epnum)
{
        return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBADDR));
}

static inline u8 musb_read_rxhubport(void __iomem *mbase, u8 epnum)
{
        return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBPORT));
}

static inline u8  musb_read_txfunaddr(void __iomem *mbase, u8 epnum)
{
        return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXFUNCADDR));
}

static inline u8  musb_read_txhubaddr(void __iomem *mbase, u8 epnum)
{
        return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBADDR));
}

static inline u8  musb_read_txhubport(void __iomem *mbase, u8 epnum)
{
        return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBPORT));
}

#endif  /* __MUSB_REGS_H__ */