/*
 * Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef __MT7530_H
#define __MT7530_H

#define MT7530_NUM_PORTS                7
#define MT7530_CPU_PORT                 6
#define MT7530_NUM_FDB_RECORDS          2048

#define NUM_TRGMII_CTRL                 5

#define TRGMII_BASE(x)                  (0x10000 + (x))

/* Registers to ethsys access */
#define ETHSYS_CLKCFG0                  0x2c
#define  ETHSYS_TRGMII_CLK_SEL362_5     BIT(11)

#define SYSC_REG_RSTCTRL                0x34
#define  RESET_MCM                      BIT(2)

/* Registers to mac forward control for unknown frames */
#define MT7530_MFC                      0x10
#define  BC_FFP(x)                      (((x) & 0xff) << 24)
#define  UNM_FFP(x)                     (((x) & 0xff) << 16)
#define  UNU_FFP(x)                     (((x) & 0xff) << 8)
#define  UNU_FFP_MASK                   UNU_FFP(~0)

/* Registers for address table access */
#define MT7530_ATA1                     0x74
#define  STATIC_EMP                     0
#define  STATIC_ENT                     3
#define MT7530_ATA2                     0x78

/* Register for address table write data */
#define MT7530_ATWD                     0x7c

/* Register for address table control */
#define MT7530_ATC                      0x80
#define  ATC_HASH                       (((x) & 0xfff) << 16)
#define  ATC_BUSY                       BIT(15)
#define  ATC_SRCH_END                   BIT(14)
#define  ATC_SRCH_HIT                   BIT(13)
#define  ATC_INVALID                    BIT(12)
#define  ATC_MAT(x)                     (((x) & 0xf) << 8)
#define  ATC_MAT_MACTAB                 ATC_MAT(0)

enum mt7530_fdb_cmd {
        MT7530_FDB_READ = 0,
        MT7530_FDB_WRITE = 1,
        MT7530_FDB_FLUSH = 2,
        MT7530_FDB_START = 4,
        MT7530_FDB_NEXT = 5,
};

/* Registers for table search read address */
#define MT7530_TSRA1                    0x84
#define  MAC_BYTE_0                     24
#define  MAC_BYTE_1                     16
#define  MAC_BYTE_2                     8
#define  MAC_BYTE_3                     0
#define  MAC_BYTE_MASK                  0xff

#define MT7530_TSRA2                    0x88
#define  MAC_BYTE_4                     24
#define  MAC_BYTE_5                     16
#define  CVID                           0
#define  CVID_MASK                      0xfff

#define MT7530_ATRD                     0x8C
#define  AGE_TIMER                      24
#define  AGE_TIMER_MASK                 0xff
#define  PORT_MAP                       4
#define  PORT_MAP_MASK                  0xff
#define  ENT_STATUS                     2
#define  ENT_STATUS_MASK                0x3

/* Register for vlan table control */
#define MT7530_VTCR                     0x90
#define  VTCR_BUSY                      BIT(31)
#define  VTCR_FUNC                      (((x) & 0xf) << 12)
#define  VTCR_FUNC_RD_VID               0x1
#define  VTCR_FUNC_WR_VID               0x2
#define  VTCR_FUNC_INV_VID              0x3
#define  VTCR_FUNC_VAL_VID              0x4
#define  VTCR_VID                       ((x) & 0xfff)

/* Register for setup vlan and acl write data */
#define MT7530_VAWD1                    0x94
#define  PORT_STAG                      BIT(31)
#define  IVL_MAC                        BIT(30)
#define  PORT_MEM(x)                    (((x) & 0xff) << 16)
#define  VALID                          BIT(1)

#define MT7530_VAWD2                    0x98

/* Register for port STP state control */
#define MT7530_SSP_P(x)                 (0x2000 + ((x) * 0x100))
#define  FID_PST(x)                     ((x) & 0x3)
#define  FID_PST_MASK                   FID_PST(0x3)

enum mt7530_stp_state {
        MT7530_STP_DISABLED = 0,
        MT7530_STP_BLOCKING = 1,
        MT7530_STP_LISTENING = 1,
        MT7530_STP_LEARNING = 2,
        MT7530_STP_FORWARDING  = 3
};

/* Register for port control */
#define MT7530_PCR_P(x)                 (0x2004 + ((x) * 0x100))
#define  PORT_VLAN(x)                   ((x) & 0x3)
#define  PCR_MATRIX(x)                  (((x) & 0xff) << 16)
#define  PORT_PRI(x)                    (((x) & 0x7) << 24)
#define  EG_TAG(x)                      (((x) & 0x3) << 28)
#define  PCR_MATRIX_MASK                PCR_MATRIX(0xff)
#define  PCR_MATRIX_CLR                 PCR_MATRIX(0)

/* Register for port security control */
#define MT7530_PSC_P(x)                 (0x200c + ((x) * 0x100))
#define  SA_DIS                         BIT(4)

/* Register for port vlan control */
#define MT7530_PVC_P(x)                 (0x2010 + ((x) * 0x100))
#define  PORT_SPEC_TAG                  BIT(5)
#define  VLAN_ATTR(x)                   (((x) & 0x3) << 6)
#define  STAG_VPID                      (((x) & 0xffff) << 16)

/* Register for port port-and-protocol based vlan 1 control */
#define MT7530_PPBV1_P(x)               (0x2014 + ((x) * 0x100))

/* Register for port MAC control register */
#define MT7530_PMCR_P(x)                (0x3000 + ((x) * 0x100))
#define  PMCR_IFG_XMIT(x)               (((x) & 0x3) << 18)
#define  PMCR_MAC_MODE                  BIT(16)
#define  PMCR_FORCE_MODE                BIT(15)
#define  PMCR_TX_EN                     BIT(14)
#define  PMCR_RX_EN                     BIT(13)
#define  PMCR_BACKOFF_EN                BIT(9)
#define  PMCR_BACKPR_EN                 BIT(8)
#define  PMCR_TX_FC_EN                  BIT(5)
#define  PMCR_RX_FC_EN                  BIT(4)
#define  PMCR_FORCE_SPEED_1000          BIT(3)
#define  PMCR_FORCE_SPEED_100           BIT(2)
#define  PMCR_FORCE_FDX                 BIT(1)
#define  PMCR_FORCE_LNK                 BIT(0)
#define  PMCR_COMMON_LINK               (PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | \
                                         PMCR_BACKOFF_EN | PMCR_BACKPR_EN | \
                                         PMCR_TX_EN | PMCR_RX_EN | \
                                         PMCR_TX_FC_EN | PMCR_RX_FC_EN)
#define  PMCR_CPUP_LINK                 (PMCR_COMMON_LINK | PMCR_FORCE_MODE | \
                                         PMCR_FORCE_SPEED_1000 | \
                                         PMCR_FORCE_FDX | \
                                         PMCR_FORCE_LNK)
#define  PMCR_USERP_LINK                PMCR_COMMON_LINK
#define  PMCR_FIXED_LINK                (PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | \
                                         PMCR_FORCE_MODE | PMCR_TX_EN | \
                                         PMCR_RX_EN | PMCR_BACKPR_EN | \
                                         PMCR_BACKOFF_EN | \
                                         PMCR_FORCE_SPEED_1000 | \
                                         PMCR_FORCE_FDX | \
                                         PMCR_FORCE_LNK)
#define PMCR_FIXED_LINK_FC              (PMCR_FIXED_LINK | \
                                         PMCR_TX_FC_EN | PMCR_RX_FC_EN)

#define MT7530_PMSR_P(x)                (0x3008 + (x) * 0x100)

/* Register for MIB */
#define MT7530_PORT_MIB_COUNTER(x)      (0x4000 + (x) * 0x100)
#define MT7530_MIB_CCR                  0x4fe0
#define  CCR_MIB_ENABLE                 BIT(31)
#define  CCR_RX_OCT_CNT_GOOD            BIT(7)
#define  CCR_RX_OCT_CNT_BAD             BIT(6)
#define  CCR_TX_OCT_CNT_GOOD            BIT(5)
#define  CCR_TX_OCT_CNT_BAD             BIT(4)
#define  CCR_MIB_FLUSH                  (CCR_RX_OCT_CNT_GOOD | \
                                         CCR_RX_OCT_CNT_BAD | \
                                         CCR_TX_OCT_CNT_GOOD | \
                                         CCR_TX_OCT_CNT_BAD)
#define  CCR_MIB_ACTIVATE               (CCR_MIB_ENABLE | \
                                         CCR_RX_OCT_CNT_GOOD | \
                                         CCR_RX_OCT_CNT_BAD | \
                                         CCR_TX_OCT_CNT_GOOD | \
                                         CCR_TX_OCT_CNT_BAD)
/* Register for system reset */
#define MT7530_SYS_CTRL                 0x7000
#define  SYS_CTRL_PHY_RST               BIT(2)
#define  SYS_CTRL_SW_RST                BIT(1)
#define  SYS_CTRL_REG_RST               BIT(0)

/* Register for hw trap status */
#define MT7530_HWTRAP                   0x7800

/* Register for hw trap modification */
#define MT7530_MHWTRAP                  0x7804
#define  MHWTRAP_MANUAL                 BIT(16)
#define  MHWTRAP_P5_MAC_SEL             BIT(13)
#define  MHWTRAP_P6_DIS                 BIT(8)
#define  MHWTRAP_P5_RGMII_MODE          BIT(7)
#define  MHWTRAP_P5_DIS                 BIT(6)
#define  MHWTRAP_PHY_ACCESS             BIT(5)

/* Register for TOP signal control */
#define MT7530_TOP_SIG_CTRL             0x7808
#define  TOP_SIG_CTRL_NORMAL            (BIT(17) | BIT(16))

#define MT7530_IO_DRV_CR                0x7810
#define  P5_IO_CLK_DRV(x)               ((x) & 0x3)
#define  P5_IO_DATA_DRV(x)              (((x) & 0x3) << 4)

#define MT7530_P6ECR                    0x7830
#define  P6_INTF_MODE_MASK              0x3
#define  P6_INTF_MODE(x)                ((x) & 0x3)

/* Registers for TRGMII on the both side */
#define MT7530_TRGMII_RCK_CTRL          0x7a00
#define GSW_TRGMII_RCK_CTRL             0x300
#define  RX_RST                         BIT(31)
#define  RXC_DQSISEL                    BIT(30)
#define  DQSI1_TAP_MASK                 (0x7f << 8)
#define  DQSI0_TAP_MASK                 0x7f
#define  DQSI1_TAP(x)                   (((x) & 0x7f) << 8)
#define  DQSI0_TAP(x)                   ((x) & 0x7f)

#define MT7530_TRGMII_RCK_RTT           0x7a04
#define GSW_TRGMII_RCK_RTT              0x304
#define  DQS1_GATE                      BIT(31)
#define  DQS0_GATE                      BIT(30)

#define MT7530_TRGMII_RD(x)             (0x7a10 + (x) * 8)
#define GSW_TRGMII_RD(x)                (0x310 + (x) * 8)
#define  BSLIP_EN                       BIT(31)
#define  EDGE_CHK                       BIT(30)
#define  RD_TAP_MASK                    0x7f
#define  RD_TAP(x)                      ((x) & 0x7f)

#define GSW_TRGMII_TXCTRL               0x340
#define MT7530_TRGMII_TXCTRL            0x7a40
#define  TRAIN_TXEN                     BIT(31)
#define  TXC_INV                        BIT(30)
#define  TX_RST                         BIT(28)

#define MT7530_TRGMII_TD_ODT(i)         (0x7a54 + 8 * (i))
#define GSW_TRGMII_TD_ODT(i)            (0x354 + 8 * (i))
#define  TD_DM_DRVP(x)                  ((x) & 0xf)
#define  TD_DM_DRVN(x)                  (((x) & 0xf) << 4)

#define GSW_INTF_MODE                   0x390
#define  INTF_MODE_TRGMII               BIT(1)

#define MT7530_TRGMII_TCK_CTRL          0x7a78
#define  TCK_TAP(x)                     (((x) & 0xf) << 8)

#define MT7530_P5RGMIIRXCR              0x7b00
#define  CSR_RGMII_EDGE_ALIGN           BIT(8)
#define  CSR_RGMII_RXC_0DEG_CFG(x)      ((x) & 0xf)

#define MT7530_P5RGMIITXCR              0x7b04
#define  CSR_RGMII_TXC_CFG(x)           ((x) & 0x1f)

#define MT7530_CREV                     0x7ffc
#define  CHIP_NAME_SHIFT                16
#define  MT7530_ID                      0x7530

/* Registers for core PLL access through mmd indirect */
#define CORE_PLL_GROUP2                 0x401
#define  RG_SYSPLL_EN_NORMAL            BIT(15)
#define  RG_SYSPLL_VODEN                BIT(14)
#define  RG_SYSPLL_LF                   BIT(13)
#define  RG_SYSPLL_RST_DLY(x)           (((x) & 0x3) << 12)
#define  RG_SYSPLL_LVROD_EN             BIT(10)
#define  RG_SYSPLL_PREDIV(x)            (((x) & 0x3) << 8)
#define  RG_SYSPLL_POSDIV(x)            (((x) & 0x3) << 5)
#define  RG_SYSPLL_FBKSEL               BIT(4)
#define  RT_SYSPLL_EN_AFE_OLT           BIT(0)

#define CORE_PLL_GROUP4                 0x403
#define  RG_SYSPLL_DDSFBK_EN            BIT(12)
#define  RG_SYSPLL_BIAS_EN              BIT(11)
#define  RG_SYSPLL_BIAS_LPF_EN          BIT(10)

#define CORE_PLL_GROUP5                 0x404
#define  RG_LCDDS_PCW_NCPO1(x)          ((x) & 0xffff)

#define CORE_PLL_GROUP6                 0x405
#define  RG_LCDDS_PCW_NCPO0(x)          ((x) & 0xffff)

#define CORE_PLL_GROUP7                 0x406
#define  RG_LCDDS_PWDB                  BIT(15)
#define  RG_LCDDS_ISO_EN                BIT(13)
#define  RG_LCCDS_C(x)                  (((x) & 0x7) << 4)
#define  RG_LCDDS_PCW_NCPO_CHG          BIT(3)

#define CORE_PLL_GROUP10                0x409
#define  RG_LCDDS_SSC_DELTA(x)          ((x) & 0xfff)

#define CORE_PLL_GROUP11                0x40a
#define  RG_LCDDS_SSC_DELTA1(x)         ((x) & 0xfff)

#define CORE_GSWPLL_GRP1                0x40d
#define  RG_GSWPLL_PREDIV(x)            (((x) & 0x3) << 14)
#define  RG_GSWPLL_POSDIV_200M(x)       (((x) & 0x3) << 12)
#define  RG_GSWPLL_EN_PRE               BIT(11)
#define  RG_GSWPLL_FBKSEL               BIT(10)
#define  RG_GSWPLL_BP                   BIT(9)
#define  RG_GSWPLL_BR                   BIT(8)
#define  RG_GSWPLL_FBKDIV_200M(x)       ((x) & 0xff)

#define CORE_GSWPLL_GRP2                0x40e
#define  RG_GSWPLL_POSDIV_500M(x)       (((x) & 0x3) << 8)
#define  RG_GSWPLL_FBKDIV_500M(x)       ((x) & 0xff)

#define CORE_TRGMII_GSW_CLK_CG          0x410
#define  REG_GSWCK_EN                   BIT(0)
#define  REG_TRGMIICK_EN                BIT(1)

#define MIB_DESC(_s, _o, _n)    \
        {                       \
                .size = (_s),   \
                .offset = (_o), \
                .name = (_n),   \
        }

struct mt7530_mib_desc {
        unsigned int size;
        unsigned int offset;
        const char *name;
};

struct mt7530_fdb {
        u16 vid;
        u8 port_mask;
        u8 aging;
        u8 mac[6];
        bool noarp;
};

struct mt7530_port {
        bool enable;
        u32 pm;
};

/* struct mt7530_priv - This is the main data structure for holding the state
 *                      of the driver
 * @dev:                The device pointer
 * @ds:                 The pointer to the dsa core structure
 * @bus:                The bus used for the device and built-in PHY
 * @rstc:               The pointer to reset control used by MCM
 * @ethernet:           The regmap used for access TRGMII-based registers
 * @core_pwr:           The power supplied into the core
 * @io_pwr:             The power supplied into the I/O
 * @reset:              The descriptor for GPIO line tied to its reset pin
 * @mcm:                Flag for distinguishing if standalone IC or module
 *                      coupling
 * @ports:              Holding the state among ports
 * @reg_mutex:          The lock for protecting among process accessing
 *                      registers
 */
struct mt7530_priv {
        struct device           *dev;
        struct dsa_switch       *ds;
        struct mii_bus          *bus;
        struct reset_control    *rstc;
        struct regmap           *ethernet;
        struct regulator        *core_pwr;
        struct regulator        *io_pwr;
        struct gpio_desc        *reset;
        bool                    mcm;

        struct mt7530_port      ports[MT7530_NUM_PORTS];
        /* protect among processes for registers access*/
        struct mutex reg_mutex;
};

struct mt7530_hw_stats {
        const char      *string;
        u16             reg;
        u8              sizeof_stat;
};

struct mt7530_dummy_poll {
        struct mt7530_priv *priv;
        u32 reg;
};

static inline void INIT_MT7530_DUMMY_POLL(struct mt7530_dummy_poll *p,
                                          struct mt7530_priv *priv, u32 reg)
{
        p->priv = priv;
        p->reg = reg;
}

#endif /* __MT7530_H */