uboot/include/dwmmc.h
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   1/*
   2 * (C) Copyright 2012 SAMSUNG Electronics
   3 * Jaehoon Chung <jh80.chung@samsung.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#ifndef __DWMMC_HW_H
   9#define __DWMMC_HW_H
  10
  11#include <asm/io.h>
  12#include <mmc.h>
  13
  14#define DWMCI_CTRL              0x000
  15#define DWMCI_PWREN             0x004
  16#define DWMCI_CLKDIV            0x008
  17#define DWMCI_CLKSRC            0x00C
  18#define DWMCI_CLKENA            0x010
  19#define DWMCI_TMOUT             0x014
  20#define DWMCI_CTYPE             0x018
  21#define DWMCI_BLKSIZ            0x01C
  22#define DWMCI_BYTCNT            0x020
  23#define DWMCI_INTMASK           0x024
  24#define DWMCI_CMDARG            0x028
  25#define DWMCI_CMD               0x02C
  26#define DWMCI_RESP0             0x030
  27#define DWMCI_RESP1             0x034
  28#define DWMCI_RESP2             0x038
  29#define DWMCI_RESP3             0x03C
  30#define DWMCI_MINTSTS           0x040
  31#define DWMCI_RINTSTS           0x044
  32#define DWMCI_STATUS            0x048
  33#define DWMCI_FIFOTH            0x04C
  34#define DWMCI_CDETECT           0x050
  35#define DWMCI_WRTPRT            0x054
  36#define DWMCI_GPIO              0x058
  37#define DWMCI_TCMCNT            0x05C
  38#define DWMCI_TBBCNT            0x060
  39#define DWMCI_DEBNCE            0x064
  40#define DWMCI_USRID             0x068
  41#define DWMCI_VERID             0x06C
  42#define DWMCI_HCON              0x070
  43#define DWMCI_UHS_REG           0x074
  44#define DWMCI_BMOD              0x080
  45#define DWMCI_PLDMND            0x084
  46#define DWMCI_DBADDR            0x088
  47#define DWMCI_IDSTS             0x08C
  48#define DWMCI_IDINTEN           0x090
  49#define DWMCI_DSCADDR           0x094
  50#define DWMCI_BUFADDR           0x098
  51#define DWMCI_DATA              0x200
  52
  53/* Interrupt Mask register */
  54#define DWMCI_INTMSK_ALL        0xffffffff
  55#define DWMCI_INTMSK_RE         (1 << 1)
  56#define DWMCI_INTMSK_CDONE      (1 << 2)
  57#define DWMCI_INTMSK_DTO        (1 << 3)
  58#define DWMCI_INTMSK_TXDR       (1 << 4)
  59#define DWMCI_INTMSK_RXDR       (1 << 5)
  60#define DWMCI_INTMSK_DCRC       (1 << 7)
  61#define DWMCI_INTMSK_RTO        (1 << 8)
  62#define DWMCI_INTMSK_DRTO       (1 << 9)
  63#define DWMCI_INTMSK_HTO        (1 << 10)
  64#define DWMCI_INTMSK_FRUN       (1 << 11)
  65#define DWMCI_INTMSK_HLE        (1 << 12)
  66#define DWMCI_INTMSK_SBE        (1 << 13)
  67#define DWMCI_INTMSK_ACD        (1 << 14)
  68#define DWMCI_INTMSK_EBE        (1 << 15)
  69
  70/* Raw interrupt Regsiter */
  71#define DWMCI_DATA_ERR  (DWMCI_INTMSK_EBE | DWMCI_INTMSK_SBE | DWMCI_INTMSK_HLE |\
  72                        DWMCI_INTMSK_FRUN | DWMCI_INTMSK_EBE | DWMCI_INTMSK_DCRC)
  73#define DWMCI_DATA_TOUT (DWMCI_INTMSK_HTO | DWMCI_INTMSK_DRTO)
  74/* CTRL register */
  75#define DWMCI_CTRL_RESET        (1 << 0)
  76#define DWMCI_CTRL_FIFO_RESET   (1 << 1)
  77#define DWMCI_CTRL_DMA_RESET    (1 << 2)
  78#define DWMCI_DMA_EN            (1 << 5)
  79#define DWMCI_CTRL_SEND_AS_CCSD (1 << 10)
  80#define DWMCI_IDMAC_EN          (1 << 25)
  81#define DWMCI_RESET_ALL         (DWMCI_CTRL_RESET | DWMCI_CTRL_FIFO_RESET |\
  82                                DWMCI_CTRL_DMA_RESET)
  83
  84/* CMD register */
  85#define DWMCI_CMD_RESP_EXP      (1 << 6)
  86#define DWMCI_CMD_RESP_LENGTH   (1 << 7)
  87#define DWMCI_CMD_CHECK_CRC     (1 << 8)
  88#define DWMCI_CMD_DATA_EXP      (1 << 9)
  89#define DWMCI_CMD_RW            (1 << 10)
  90#define DWMCI_CMD_SEND_STOP     (1 << 12)
  91#define DWMCI_CMD_ABORT_STOP    (1 << 14)
  92#define DWMCI_CMD_PRV_DAT_WAIT  (1 << 13)
  93#define DWMCI_CMD_UPD_CLK       (1 << 21)
  94#define DWMCI_CMD_USE_HOLD_REG  (1 << 29)
  95#define DWMCI_CMD_START         (1 << 31)
  96
  97/* CLKENA register */
  98#define DWMCI_CLKEN_ENABLE      (1 << 0)
  99#define DWMCI_CLKEN_LOW_PWR     (1 << 16)
 100
 101/* Card-type registe */
 102#define DWMCI_CTYPE_1BIT        0
 103#define DWMCI_CTYPE_4BIT        (1 << 0)
 104#define DWMCI_CTYPE_8BIT        (1 << 16)
 105
 106/* Status Register */
 107#define DWMCI_BUSY              (1 << 9)
 108
 109/* FIFOTH Register */
 110#define MSIZE(x)                ((x) << 28)
 111#define RX_WMARK(x)             ((x) << 16)
 112#define TX_WMARK(x)             (x)
 113#define RX_WMARK_SHIFT          16
 114#define RX_WMARK_MASK           (0xfff << RX_WMARK_SHIFT)
 115
 116#define DWMCI_IDMAC_OWN         (1 << 31)
 117#define DWMCI_IDMAC_CH          (1 << 4)
 118#define DWMCI_IDMAC_FS          (1 << 3)
 119#define DWMCI_IDMAC_LD          (1 << 2)
 120
 121/*  Bus Mode Register */
 122#define DWMCI_BMOD_IDMAC_RESET  (1 << 0)
 123#define DWMCI_BMOD_IDMAC_FB     (1 << 1)
 124#define DWMCI_BMOD_IDMAC_EN     (1 << 7)
 125
 126/* UHS register */
 127#define DWMCI_DDR_MODE  (1 << 16)
 128
 129/* quirks */
 130#define DWMCI_QUIRK_DISABLE_SMU         (1 << 0)
 131
 132struct dwmci_host {
 133        char *name;
 134        void *ioaddr;
 135        unsigned int quirks;
 136        unsigned int caps;
 137        unsigned int version;
 138        unsigned int clock;
 139        unsigned int bus_hz;
 140        unsigned int div;
 141        int dev_index;
 142        int dev_id;
 143        int buswidth;
 144        u32 fifoth_val;
 145        struct mmc *mmc;
 146        void *priv;
 147
 148        void (*clksel)(struct dwmci_host *host);
 149        void (*board_init)(struct dwmci_host *host);
 150        unsigned int (*get_mmc_clk)(struct dwmci_host *host);
 151
 152        struct mmc_config cfg;
 153};
 154
 155struct dwmci_idmac {
 156        u32 flags;
 157        u32 cnt;
 158        u32 addr;
 159        u32 next_addr;
 160} __aligned(ARCH_DMA_MINALIGN);
 161
 162static inline void dwmci_writel(struct dwmci_host *host, int reg, u32 val)
 163{
 164        writel(val, host->ioaddr + reg);
 165}
 166
 167static inline void dwmci_writew(struct dwmci_host *host, int reg, u16 val)
 168{
 169        writew(val, host->ioaddr + reg);
 170}
 171
 172static inline void dwmci_writeb(struct dwmci_host *host, int reg, u8 val)
 173{
 174        writeb(val, host->ioaddr + reg);
 175}
 176static inline u32 dwmci_readl(struct dwmci_host *host, int reg)
 177{
 178        return readl(host->ioaddr + reg);
 179}
 180
 181static inline u16 dwmci_readw(struct dwmci_host *host, int reg)
 182{
 183        return readw(host->ioaddr + reg);
 184}
 185
 186static inline u8 dwmci_readb(struct dwmci_host *host, int reg)
 187{
 188        return readb(host->ioaddr + reg);
 189}
 190
 191int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk);
 192#endif  /* __DWMMC_HW_H */
 193