/*
 * Copyright 2011, Marvell Semiconductor Inc.
 * Lei Wen <leiwen@marvell.com>
 *
 * SPDX-License-Identifier:     GPL-2.0+
 *
 * Back ported to the 8xx platform (from the 8260 platform) by
 * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
 */
#ifndef __SDHCI_HW_H
#define __SDHCI_HW_H

#include <asm/io.h>
#include <mmc.h>
#include <asm/gpio.h>

/*
 * Controller registers
 */

#define SDHCI_DMA_ADDRESS       0x00

#define SDHCI_BLOCK_SIZE        0x04
#define  SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))

#define SDHCI_BLOCK_COUNT       0x06

#define SDHCI_ARGUMENT          0x08

#define SDHCI_TRANSFER_MODE     0x0C
#define  SDHCI_TRNS_DMA         BIT(0)
#define  SDHCI_TRNS_BLK_CNT_EN  BIT(1)
#define  SDHCI_TRNS_ACMD12      BIT(2)
#define  SDHCI_TRNS_READ        BIT(4)
#define  SDHCI_TRNS_MULTI       BIT(5)

#define SDHCI_COMMAND           0x0E
#define  SDHCI_CMD_RESP_MASK    0x03
#define  SDHCI_CMD_CRC          0x08
#define  SDHCI_CMD_INDEX        0x10
#define  SDHCI_CMD_DATA         0x20
#define  SDHCI_CMD_ABORTCMD     0xC0

#define  SDHCI_CMD_RESP_NONE    0x00
#define  SDHCI_CMD_RESP_LONG    0x01
#define  SDHCI_CMD_RESP_SHORT   0x02
#define  SDHCI_CMD_RESP_SHORT_BUSY 0x03

#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
#define SDHCI_GET_CMD(c) ((c>>8) & 0x3f)

#define SDHCI_RESPONSE          0x10

#define SDHCI_BUFFER            0x20

#define SDHCI_PRESENT_STATE     0x24
#define  SDHCI_CMD_INHIBIT      BIT(0)
#define  SDHCI_DATA_INHIBIT     BIT(1)
#define  SDHCI_DOING_WRITE      BIT(8)
#define  SDHCI_DOING_READ       BIT(9)
#define  SDHCI_SPACE_AVAILABLE  BIT(10)
#define  SDHCI_DATA_AVAILABLE   BIT(11)
#define  SDHCI_CARD_PRESENT     BIT(16)
#define  SDHCI_CARD_STATE_STABLE        BIT(17)
#define  SDHCI_CARD_DETECT_PIN_LEVEL    BIT(18)
#define  SDHCI_WRITE_PROTECT    BIT(19)
#define  SDHCI_DATA_BUSY        0xF00000
#define  SDHCI_CMD_BUSY         0x1000000

#define SDHCI_HOST_CONTROL      0x28
#define  SDHCI_CTRL_LED         BIT(0)
#define  SDHCI_CTRL_4BITBUS     BIT(1)
#define  SDHCI_CTRL_HISPD       BIT(2)
#define  SDHCI_CTRL_DMA_MASK    0x18
#define   SDHCI_CTRL_SDMA       0x00
#define   SDHCI_CTRL_ADMA1      0x08
#define   SDHCI_CTRL_ADMA32     0x10
#define   SDHCI_CTRL_ADMA64     0x18
#define  SDHCI_CTRL_8BITBUS     BIT(5)
#define  SDHCI_CTRL_CD_TEST_INS BIT(6)
#define  SDHCI_CTRL_CD_TEST     BIT(7)

#define SDHCI_POWER_CONTROL     0x29
#define  SDHCI_POWER_ON         0x01
#define  SDHCI_POWER_180        0x0A
#define  SDHCI_POWER_300        0x0C
#define  SDHCI_POWER_330        0x0E

#define SDHCI_BLOCK_GAP_CONTROL 0x2A

#define SDHCI_WAKE_UP_CONTROL   0x2B
#define  SDHCI_WAKE_ON_INT      BIT(0)
#define  SDHCI_WAKE_ON_INSERT   BIT(1)
#define  SDHCI_WAKE_ON_REMOVE   BIT(2)

#define SDHCI_CLOCK_CONTROL     0x2C
#define  SDHCI_DIVIDER_SHIFT    8
#define  SDHCI_DIVIDER_HI_SHIFT 6
#define  SDHCI_DIV_MASK 0xFF
#define  SDHCI_DIV_MASK_LEN     8
#define  SDHCI_DIV_HI_MASK      0x300
#define  SDHCI_PROG_CLOCK_MODE  BIT(5)
#define  SDHCI_CLOCK_CARD_EN    BIT(2)
#define  SDHCI_CLOCK_INT_STABLE BIT(1)
#define  SDHCI_CLOCK_INT_EN     BIT(0)

#define SDHCI_TIMEOUT_CONTROL   0x2E

#define SDHCI_SOFTWARE_RESET    0x2F
#define  SDHCI_RESET_ALL        0x01
#define  SDHCI_RESET_CMD        0x02
#define  SDHCI_RESET_DATA       0x04

#define SDHCI_INT_STATUS        0x30
#define SDHCI_INT_ENABLE        0x34
#define SDHCI_SIGNAL_ENABLE     0x38
#define  SDHCI_INT_RESPONSE     BIT(0)
#define  SDHCI_INT_DATA_END     BIT(1)
#define  SDHCI_INT_DMA_END      BIT(3)
#define  SDHCI_INT_SPACE_AVAIL  BIT(4)
#define  SDHCI_INT_DATA_AVAIL   BIT(5)
#define  SDHCI_INT_CARD_INSERT  BIT(6)
#define  SDHCI_INT_CARD_REMOVE  BIT(7)
#define  SDHCI_INT_CARD_INT     BIT(8)
#define  SDHCI_INT_ERROR        BIT(15)
#define  SDHCI_INT_TIMEOUT      BIT(16)
#define  SDHCI_INT_CRC          BIT(17)
#define  SDHCI_INT_END_BIT      BIT(18)
#define  SDHCI_INT_INDEX        BIT(19)
#define  SDHCI_INT_DATA_TIMEOUT BIT(20)
#define  SDHCI_INT_DATA_CRC     BIT(21)
#define  SDHCI_INT_DATA_END_BIT BIT(22)
#define  SDHCI_INT_BUS_POWER    BIT(23)
#define  SDHCI_INT_ACMD12ERR    BIT(24)
#define  SDHCI_INT_ADMA_ERROR   BIT(25)

#define  SDHCI_INT_NORMAL_MASK  0x00007FFF
#define  SDHCI_INT_ERROR_MASK   0xFFFF8000

#define  SDHCI_INT_CMD_MASK     (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
                SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
#define  SDHCI_INT_DATA_MASK    (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
                SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
                SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
                SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR)
#define SDHCI_INT_ALL_MASK      ((unsigned int)-1)

#define SDHCI_ACMD12_ERR        0x3C

/* 3E-3F reserved */
#define SDHCI_HOST_CTRL2        0x3E
#define SDHCI_CTRL2_MODE_MASK   0x7

#define SDHCI_18V_SIGNAL        0x8
#define SDHCI_CTRL_EXEC_TUNING  0x0040
#define SDHCI_CTRL_TUNED_CLK    0x80

#define SDHCI_CAPABILITIES      0x40
#define  SDHCI_TIMEOUT_CLK_MASK 0x0000003F
#define  SDHCI_TIMEOUT_CLK_SHIFT 0
#define  SDHCI_TIMEOUT_CLK_UNIT 0x00000080
#define  SDHCI_CLOCK_BASE_MASK  0x00003F00
#define  SDHCI_CLOCK_V3_BASE_MASK       0x0000FF00
#define  SDHCI_CLOCK_BASE_SHIFT 8
#define  SDHCI_MAX_BLOCK_MASK   0x00030000
#define  SDHCI_MAX_BLOCK_SHIFT  16
#define  SDHCI_CAN_DO_8BIT      BIT(18)
#define  SDHCI_CAN_DO_ADMA2     BIT(19)
#define  SDHCI_CAN_DO_ADMA1     BIT(20)
#define  SDHCI_CAN_DO_HISPD     BIT(21)
#define  SDHCI_CAN_DO_SDMA      BIT(22)
#define  SDHCI_CAN_VDD_330      BIT(24)
#define  SDHCI_CAN_VDD_300      BIT(25)
#define  SDHCI_CAN_VDD_180      BIT(26)
#define  SDHCI_CAN_64BIT        BIT(28)

#define SDHCI_CAPABILITIES_1    0x44
#define  SDHCI_SUPPORT_SDR50    0x00000001
#define  SDHCI_SUPPORT_SDR104   0x00000002
#define  SDHCI_SUPPORT_DDR50    0x00000004
#define  SDHCI_USE_SDR50_TUNING         0x00002000
#define  SDHCI_SUPPORT_HS400    0x80000000 /* Non-standard */

#define  SDHCI_CLOCK_MUL_MASK   0x00FF0000
#define  SDHCI_CLOCK_MUL_SHIFT  16

#define SDHCI_MAX_CURRENT       0x48

/* 4C-4F reserved for more max current */

#define SDHCI_SET_ACMD12_ERROR  0x50
#define SDHCI_SET_INT_ERROR     0x52

#define SDHCI_ADMA_ERROR        0x54

/* 55-57 reserved */

#define SDHCI_ADMA_ADDRESS      0x58

/* 60-FB reserved */

#define SDHCI_SLOT_INT_STATUS   0xFC

#define SDHCI_HOST_VERSION      0xFE
#define  SDHCI_VENDOR_VER_MASK  0xFF00
#define  SDHCI_VENDOR_VER_SHIFT 8
#define  SDHCI_SPEC_VER_MASK    0x00FF
#define  SDHCI_SPEC_VER_SHIFT   0
#define   SDHCI_SPEC_100        0
#define   SDHCI_SPEC_200        1
#define   SDHCI_SPEC_300        2

#define SDHCI_GET_VERSION(x) (x->version & SDHCI_SPEC_VER_MASK)

/*
 * End of controller registers.
 */

#define SDHCI_MAX_DIV_SPEC_200  256
#define SDHCI_MAX_DIV_SPEC_300  2046

/*
 * quirks
 */
#define SDHCI_QUIRK_32BIT_DMA_ADDR      (1 << 0)
#define SDHCI_QUIRK_REG32_RW            (1 << 1)
#define SDHCI_QUIRK_BROKEN_R1B          (1 << 2)
#define SDHCI_QUIRK_NO_HISPD_BIT        (1 << 3)
#define SDHCI_QUIRK_BROKEN_VOLTAGE      (1 << 4)
#define SDHCI_QUIRK_WAIT_SEND_CMD       (1 << 6)
#define SDHCI_QUIRK_USE_WIDE8           (1 << 8)
#define SDHCI_QUIRK_NO_1_8_V            (1 << 9)
#define SDHCI_QUIRK_USE_ACMD12          (1 << 10)

/* to make gcc happy */
struct sdhci_host;

/*
 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
 */
#define SDHCI_DEFAULT_BOUNDARY_SIZE     (512 * 1024)
#define SDHCI_DEFAULT_BOUNDARY_ARG      (7)
struct sdhci_ops {
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
        u32     (*read_l)(struct sdhci_host *host, int reg);
        u16     (*read_w)(struct sdhci_host *host, int reg);
        u8      (*read_b)(struct sdhci_host *host, int reg);
        void    (*write_l)(struct sdhci_host *host, u32 val, int reg);
        void    (*write_w)(struct sdhci_host *host, u16 val, int reg);
        void    (*write_b)(struct sdhci_host *host, u8 val, int reg);
#endif
        int     (*get_cd)(struct sdhci_host *host);
        void    (*set_control_reg)(struct sdhci_host *host);
        void    (*set_ios_post)(struct sdhci_host *host);
        void    (*set_clock)(struct sdhci_host *host, u32 div);
};

struct sdhci_host {
        const char *name;
        void *ioaddr;
        unsigned int quirks;
        unsigned int host_caps;
        unsigned int version;
        unsigned int max_clk;   /* Maximum Base Clock frequency */
        unsigned int clk_mul;   /* Clock Multiplier value */
        unsigned int clock;
        struct mmc *mmc;
        struct sdhci_ops *ops;
        int index;

        int bus_width;
        struct gpio_desc pwr_gpio;      /* Power GPIO */
        struct gpio_desc cd_gpio;               /* Card Detect GPIO */

        void (*set_control_reg)(struct sdhci_host *host);
        void (*set_clock)(int dev_index, unsigned int div);
        int (*platform_execute_tuning)(struct mmc *host, u8 opcode);
        void (*set_delay)(struct sdhci_host *host);
        uint    voltages;

        struct mmc_config cfg;
        unsigned int last_cmd;
};

#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS

static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
{
        if (unlikely(host->ops->write_l))
                host->ops->write_l(host, val, reg);
        else
                writel(val, host->ioaddr + reg);
}

static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
{
        if (unlikely(host->ops->write_w))
                host->ops->write_w(host, val, reg);
        else
                writew(val, host->ioaddr + reg);
}

static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
{
        if (unlikely(host->ops->write_b))
                host->ops->write_b(host, val, reg);
        else
                writeb(val, host->ioaddr + reg);
}

static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
{
        if (unlikely(host->ops->read_l))
                return host->ops->read_l(host, reg);
        else
                return readl(host->ioaddr + reg);
}

static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
{
        if (unlikely(host->ops->read_w))
                return host->ops->read_w(host, reg);
        else
                return readw(host->ioaddr + reg);
}

static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
{
        if (unlikely(host->ops->read_b))
                return host->ops->read_b(host, reg);
        else
                return readb(host->ioaddr + reg);
}

#else

static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
{
        writel(val, host->ioaddr + reg);
}

static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
{
        writew(val, host->ioaddr + reg);
}

static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
{
        writeb(val, host->ioaddr + reg);
}
static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
{
        return readl(host->ioaddr + reg);
}

static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
{
        return readw(host->ioaddr + reg);
}

static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
{
        return readb(host->ioaddr + reg);
}
#endif

#ifdef CONFIG_BLK
/**
 * sdhci_setup_cfg() - Set up the configuration for DWMMC
 *
 * This is used to set up an SDHCI device when you are using CONFIG_BLK.
 *
 * This should be called from your MMC driver's probe() method once you have
 * the information required.
 *
 * Generally your driver will have a platform data structure which holds both
 * the configuration (struct mmc_config) and the MMC device info (struct mmc).
 * For example:
 *
 * struct msm_sdhc_plat {
 *      struct mmc_config cfg;
 *      struct mmc mmc;
 * };
 *
 * ...
 *
 * Inside U_BOOT_DRIVER():
 *      .platdata_auto_alloc_size = sizeof(struct msm_sdhc_plat),
 *
 * To access platform data:
 *      struct msm_sdhc_plat *plat = dev_get_platdata(dev);
 *
 * See msm_sdhci.c for an example.
 *
 * @cfg:        Configuration structure to fill in (generally &plat->mmc)
 * @host:       SDHCI host structure
 * @f_max:      Maximum supported clock frequency in HZ (0 for default)
 * @f_min:      Minimum supported clock frequency in HZ (0 for default)
 */
int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host,
                    u32 f_max, u32 f_min);

/**
 * sdhci_bind() - Set up a new MMC block device
 *
 * This is used to set up an SDHCI block device when you are using CONFIG_BLK.
 * It should be called from your driver's bind() method.
 *
 * See msm_sdhci.c for an example.
 *
 * @dev:        Device to set up
 * @mmc:        Pointer to mmc structure (normally &plat->mmc)
 * @cfg:        Empty configuration structure (generally &plat->cfg). This is
 *              normally all zeroes at this point. The only purpose of passing
 *              this in is to set mmc->cfg to it.
 * @return 0 if OK, -ve if the block device could not be created
 */
int sdhci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg);
#else

/**
 * add_sdhci() - Add a new SDHCI interface
 *
 * This is used when you are not using CONFIG_BLK. Convert your driver over!
 *
 * @host:       SDHCI host structure
 * @f_max:      Maximum supported clock frequency in HZ (0 for default)
 * @f_min:      Minimum supported clock frequency in HZ (0 for default)
 * @return 0 if OK, -ve on error
 */
int add_sdhci(struct sdhci_host *host, u32 f_max, u32 f_min);
#endif /* !CONFIG_BLK */

#ifdef CONFIG_DM_MMC
/* Export the operations to drivers */
int sdhci_probe(struct udevice *dev);
extern const struct dm_mmc_ops sdhci_ops;
#else
#endif

#endif /* __SDHCI_HW_H */