drivers/mmc/host/mmci.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  linux/drivers/mmc/host/mmci.h - ARM PrimeCell MMCI PL180/1 driver
   4  *
   5  *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
   6  */
   7 #define MMCIPOWER               0x000
   8 #define MCI_PWR_OFF             0x00
   9 #define MCI_PWR_UP              0x02
  10 #define MCI_PWR_ON              0x03
  11 #define MCI_OD                  (1 << 6)
  12 #define MCI_ROD                 (1 << 7)
  13 /*
  14  * The ST Micro version does not have ROD and reuse the voltage registers for
  15  * direction settings.
  16  */
  17 #define MCI_ST_DATA2DIREN       (1 << 2)
  18 #define MCI_ST_CMDDIREN         (1 << 3)
  19 #define MCI_ST_DATA0DIREN       (1 << 4)
  20 #define MCI_ST_DATA31DIREN      (1 << 5)
  21 #define MCI_ST_FBCLKEN          (1 << 7)
  22 #define MCI_ST_DATA74DIREN      (1 << 8)
  23 /*
  24  * The STM32 sdmmc does not have PWR_UP/OD/ROD
  25  * and uses the power register for
  26  */
  27 #define MCI_STM32_PWR_CYC       0x02
  28 #define MCI_STM32_VSWITCH       BIT(2)
  29 #define MCI_STM32_VSWITCHEN     BIT(3)
  30 #define MCI_STM32_DIRPOL        BIT(4)
  31
  32 #define MMCICLOCK               0x004
  33 #define MCI_CLK_ENABLE          (1 << 8)
  34 #define MCI_CLK_PWRSAVE         (1 << 9)
  35 #define MCI_CLK_BYPASS          (1 << 10)
  36 #define MCI_4BIT_BUS            (1 << 11)
  37 /*
  38  * 8bit wide buses, hardware flow contronl, negative edges and clock inversion
  39  * supported in ST Micro U300 and Ux500 versions
  40  */
  41 #define MCI_ST_8BIT_BUS         (1 << 12)
  42 #define MCI_ST_U300_HWFCEN      (1 << 13)
  43 #define MCI_ST_UX500_NEG_EDGE   (1 << 13)
  44 #define MCI_ST_UX500_HWFCEN     (1 << 14)
  45 #define MCI_ST_UX500_CLK_INV    (1 << 15)
  46 /* Modified PL180 on Versatile Express platform */
  47 #define MCI_ARM_HWFCEN          (1 << 12)
  48
  49 /* Modified on Qualcomm Integrations */
  50 #define MCI_QCOM_CLK_WIDEBUS_8  (BIT(10) | BIT(11))
  51 #define MCI_QCOM_CLK_FLOWENA    BIT(12)
  52 #define MCI_QCOM_CLK_INVERTOUT  BIT(13)
  53
  54 /* select in latch data and command in */
  55 #define MCI_QCOM_CLK_SELECT_IN_FBCLK    BIT(15)
  56 #define MCI_QCOM_CLK_SELECT_IN_DDR_MODE (BIT(14) | BIT(15))
  57
  58 /* Modified on STM32 sdmmc */
  59 #define MCI_STM32_CLK_CLKDIV_MSK        GENMASK(9, 0)
  60 #define MCI_STM32_CLK_WIDEBUS_4         BIT(14)
  61 #define MCI_STM32_CLK_WIDEBUS_8         BIT(15)
  62 #define MCI_STM32_CLK_NEGEDGE           BIT(16)
  63 #define MCI_STM32_CLK_HWFCEN            BIT(17)
  64 #define MCI_STM32_CLK_DDR               BIT(18)
  65 #define MCI_STM32_CLK_BUSSPEED          BIT(19)
  66 #define MCI_STM32_CLK_SEL_MSK           GENMASK(21, 20)
  67 #define MCI_STM32_CLK_SELCK             (0 << 20)
  68 #define MCI_STM32_CLK_SELCKIN           (1 << 20)
  69 #define MCI_STM32_CLK_SELFBCK           (2 << 20)
  70
  71 #define MMCIARGUMENT            0x008
  72
  73 /* The command register controls the Command Path State Machine (CPSM) */
  74 #define MMCICOMMAND             0x00c
  75 #define MCI_CPSM_RESPONSE       BIT(6)
  76 #define MCI_CPSM_LONGRSP        BIT(7)
  77 #define MCI_CPSM_INTERRUPT      BIT(8)
  78 #define MCI_CPSM_PENDING        BIT(9)
  79 #define MCI_CPSM_ENABLE         BIT(10)
  80 /* Command register flag extensions in the ST Micro versions */
  81 #define MCI_CPSM_ST_SDIO_SUSP           BIT(11)
  82 #define MCI_CPSM_ST_ENCMD_COMPL         BIT(12)
  83 #define MCI_CPSM_ST_NIEN                BIT(13)
  84 #define MCI_CPSM_ST_CE_ATACMD           BIT(14)
  85 /* Command register flag extensions in the Qualcomm versions */
  86 #define MCI_CPSM_QCOM_PROGENA           BIT(11)
  87 #define MCI_CPSM_QCOM_DATCMD            BIT(12)
  88 #define MCI_CPSM_QCOM_MCIABORT          BIT(13)
  89 #define MCI_CPSM_QCOM_CCSENABLE         BIT(14)
  90 #define MCI_CPSM_QCOM_CCSDISABLE        BIT(15)
  91 #define MCI_CPSM_QCOM_AUTO_CMD19        BIT(16)
  92 #define MCI_CPSM_QCOM_AUTO_CMD21        BIT(21)
  93 /* Command register in STM32 sdmmc versions */
  94 #define MCI_CPSM_STM32_CMDTRANS         BIT(6)
  95 #define MCI_CPSM_STM32_CMDSTOP          BIT(7)
  96 #define MCI_CPSM_STM32_WAITRESP_MASK    GENMASK(9, 8)
  97 #define MCI_CPSM_STM32_NORSP            (0 << 8)
  98 #define MCI_CPSM_STM32_SRSP_CRC         (1 << 8)
  99 #define MCI_CPSM_STM32_SRSP             (2 << 8)
 100 #define MCI_CPSM_STM32_LRSP_CRC         (3 << 8)
 101 #define MCI_CPSM_STM32_ENABLE           BIT(12)
 102
 103 #define MMCIRESPCMD             0x010
 104 #define MMCIRESPONSE0           0x014
 105 #define MMCIRESPONSE1           0x018
 106 #define MMCIRESPONSE2           0x01c
 107 #define MMCIRESPONSE3           0x020
 108 #define MMCIDATATIMER           0x024
 109 #define MMCIDATALENGTH          0x028
 110
 111 /* The data control register controls the Data Path State Machine (DPSM) */
 112 #define MMCIDATACTRL            0x02c
 113 #define MCI_DPSM_ENABLE         BIT(0)
 114 #define MCI_DPSM_DIRECTION      BIT(1)
 115 #define MCI_DPSM_MODE           BIT(2)
 116 #define MCI_DPSM_DMAENABLE      BIT(3)
 117 #define MCI_DPSM_BLOCKSIZE      BIT(4)
 118 /* Control register extensions in the ST Micro U300 and Ux500 versions */
 119 #define MCI_DPSM_ST_RWSTART     BIT(8)
 120 #define MCI_DPSM_ST_RWSTOP      BIT(9)
 121 #define MCI_DPSM_ST_RWMOD       BIT(10)
 122 #define MCI_DPSM_ST_SDIOEN      BIT(11)
 123 /* Control register extensions in the ST Micro Ux500 versions */
 124 #define MCI_DPSM_ST_DMAREQCTL   BIT(12)
 125 #define MCI_DPSM_ST_DBOOTMODEEN BIT(13)
 126 #define MCI_DPSM_ST_BUSYMODE    BIT(14)
 127 #define MCI_DPSM_ST_DDRMODE     BIT(15)
 128 /* Control register extensions in the Qualcomm versions */
 129 #define MCI_DPSM_QCOM_DATA_PEND BIT(17)
 130 #define MCI_DPSM_QCOM_RX_DATA_PEND BIT(20)
 131 /* Control register extensions in STM32 versions */
 132 #define MCI_DPSM_STM32_MODE_BLOCK       (0 << 2)
 133 #define MCI_DPSM_STM32_MODE_SDIO        (1 << 2)
 134 #define MCI_DPSM_STM32_MODE_STREAM      (2 << 2)
 135 #define MCI_DPSM_STM32_MODE_BLOCK_STOP  (3 << 2)
 136
 137 #define MMCIDATACNT             0x030
 138 #define MMCISTATUS              0x034
 139 #define MCI_CMDCRCFAIL          (1 << 0)
 140 #define MCI_DATACRCFAIL         (1 << 1)
 141 #define MCI_CMDTIMEOUT          (1 << 2)
 142 #define MCI_DATATIMEOUT         (1 << 3)
 143 #define MCI_TXUNDERRUN          (1 << 4)
 144 #define MCI_RXOVERRUN           (1 << 5)
 145 #define MCI_CMDRESPEND          (1 << 6)
 146 #define MCI_CMDSENT             (1 << 7)
 147 #define MCI_DATAEND             (1 << 8)
 148 #define MCI_STARTBITERR         (1 << 9)
 149 #define MCI_DATABLOCKEND        (1 << 10)
 150 #define MCI_CMDACTIVE           (1 << 11)
 151 #define MCI_TXACTIVE            (1 << 12)
 152 #define MCI_RXACTIVE            (1 << 13)
 153 #define MCI_TXFIFOHALFEMPTY     (1 << 14)
 154 #define MCI_RXFIFOHALFFULL      (1 << 15)
 155 #define MCI_TXFIFOFULL          (1 << 16)
 156 #define MCI_RXFIFOFULL          (1 << 17)
 157 #define MCI_TXFIFOEMPTY         (1 << 18)
 158 #define MCI_RXFIFOEMPTY         (1 << 19)
 159 #define MCI_TXDATAAVLBL         (1 << 20)
 160 #define MCI_RXDATAAVLBL         (1 << 21)
 161 /* Extended status bits for the ST Micro variants */
 162 #define MCI_ST_SDIOIT           (1 << 22)
 163 #define MCI_ST_CEATAEND         (1 << 23)
 164 #define MCI_ST_CARDBUSY         (1 << 24)
 165 /* Extended status bits for the STM32 variants */
 166 #define MCI_STM32_BUSYD0        BIT(20)
 167 #define MCI_STM32_BUSYD0END     BIT(21)
 168 #define MCI_STM32_VSWEND        BIT(25)
 169
 170 #define MMCICLEAR               0x038
 171 #define MCI_CMDCRCFAILCLR       (1 << 0)
 172 #define MCI_DATACRCFAILCLR      (1 << 1)
 173 #define MCI_CMDTIMEOUTCLR       (1 << 2)
 174 #define MCI_DATATIMEOUTCLR      (1 << 3)
 175 #define MCI_TXUNDERRUNCLR       (1 << 4)
 176 #define MCI_RXOVERRUNCLR        (1 << 5)
 177 #define MCI_CMDRESPENDCLR       (1 << 6)
 178 #define MCI_CMDSENTCLR          (1 << 7)
 179 #define MCI_DATAENDCLR          (1 << 8)
 180 #define MCI_STARTBITERRCLR      (1 << 9)
 181 #define MCI_DATABLOCKENDCLR     (1 << 10)
 182 /* Extended status bits for the ST Micro variants */
 183 #define MCI_ST_SDIOITC          (1 << 22)
 184 #define MCI_ST_CEATAENDC        (1 << 23)
 185 #define MCI_ST_BUSYENDC         (1 << 24)
 186 /* Extended clear bits for the STM32 variants */
 187 #define MCI_STM32_VSWENDC       BIT(25)
 188 #define MCI_STM32_CKSTOPC       BIT(26)
 189
 190 #define MMCIMASK0               0x03c
 191 #define MCI_CMDCRCFAILMASK      (1 << 0)
 192 #define MCI_DATACRCFAILMASK     (1 << 1)
 193 #define MCI_CMDTIMEOUTMASK      (1 << 2)
 194 #define MCI_DATATIMEOUTMASK     (1 << 3)
 195 #define MCI_TXUNDERRUNMASK      (1 << 4)
 196 #define MCI_RXOVERRUNMASK       (1 << 5)
 197 #define MCI_CMDRESPENDMASK      (1 << 6)
 198 #define MCI_CMDSENTMASK         (1 << 7)
 199 #define MCI_DATAENDMASK         (1 << 8)
 200 #define MCI_STARTBITERRMASK     (1 << 9)
 201 #define MCI_DATABLOCKENDMASK    (1 << 10)
 202 #define MCI_CMDACTIVEMASK       (1 << 11)
 203 #define MCI_TXACTIVEMASK        (1 << 12)
 204 #define MCI_RXACTIVEMASK        (1 << 13)
 205 #define MCI_TXFIFOHALFEMPTYMASK (1 << 14)
 206 #define MCI_RXFIFOHALFFULLMASK  (1 << 15)
 207 #define MCI_TXFIFOFULLMASK      (1 << 16)
 208 #define MCI_RXFIFOFULLMASK      (1 << 17)
 209 #define MCI_TXFIFOEMPTYMASK     (1 << 18)
 210 #define MCI_RXFIFOEMPTYMASK     (1 << 19)
 211 #define MCI_TXDATAAVLBLMASK     (1 << 20)
 212 #define MCI_RXDATAAVLBLMASK     (1 << 21)
 213 /* Extended status bits for the ST Micro variants */
 214 #define MCI_ST_SDIOITMASK       (1 << 22)
 215 #define MCI_ST_CEATAENDMASK     (1 << 23)
 216 #define MCI_ST_BUSYENDMASK      (1 << 24)
 217 /* Extended status bits for the STM32 variants */
 218 #define MCI_STM32_BUSYD0ENDMASK BIT(21)
 219
 220 #define MMCIMASK1               0x040
 221
 222 /* STM32 sdmmc data FIFO threshold register */
 223 #define MMCI_STM32_FIFOTHRR     0x044
 224 #define MMCI_STM32_THR_MASK     GENMASK(3, 0)
 225
 226 #define MMCIFIFOCNT             0x048
 227 #define MMCIFIFO                0x080 /* to 0x0bc */
 228
 229 /* STM32 sdmmc registers for IDMA (Internal DMA) */
 230 #define MMCI_STM32_IDMACTRLR    0x050
 231 #define MMCI_STM32_IDMAEN       BIT(0)
 232 #define MMCI_STM32_IDMALLIEN    BIT(1)
 233
 234 #define MMCI_STM32_IDMABSIZER           0x054
 235
 236 #define MMCI_STM32_IDMABASE0R   0x058
 237
 238 #define MMCI_STM32_IDMALAR      0x64
 239 #define MMCI_STM32_IDMALA_MASK  GENMASK(13, 0)
 240 #define MMCI_STM32_ABR          BIT(29)
 241 #define MMCI_STM32_ULS          BIT(30)
 242 #define MMCI_STM32_ULA          BIT(31)
 243
 244 #define MMCI_STM32_IDMABAR      0x68
 245
 246 #define MCI_IRQENABLE   \
 247         (MCI_CMDCRCFAILMASK | MCI_DATACRCFAILMASK | MCI_CMDTIMEOUTMASK | \
 248         MCI_DATATIMEOUTMASK | MCI_TXUNDERRUNMASK | MCI_RXOVERRUNMASK |  \
 249         MCI_CMDRESPENDMASK | MCI_CMDSENTMASK)
 250
 251 /* These interrupts are directed to IRQ1 when two IRQ lines are available */
 252 #define MCI_IRQ_PIO_MASK \
 253         (MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
 254          MCI_TXFIFOHALFEMPTYMASK)
 255
 256 #define MCI_IRQ_PIO_STM32_MASK \
 257         (MCI_RXFIFOHALFFULLMASK | MCI_TXFIFOHALFEMPTYMASK)
 258
 259 #define NR_SG           128
 260
 261 #define MMCI_PINCTRL_STATE_OPENDRAIN "opendrain"
 262
 263 struct clk;
 264 struct dma_chan;
 265 struct mmci_host;
 266
 267 /**
 268  * enum mmci_busy_state - enumerate the busy detect wait states
 269  *
 270  * This is used for the state machine waiting for different busy detect
 271  * interrupts on hardware that fire a single IRQ for start and end of
 272  * the busy detect phase on DAT0.
 273  */
 274 enum mmci_busy_state {
 275         MMCI_BUSY_WAITING_FOR_START_IRQ,
 276         MMCI_BUSY_WAITING_FOR_END_IRQ,
 277         MMCI_BUSY_DONE,
 278 };
 279
 280 /**
 281  * struct variant_data - MMCI variant-specific quirks
 282  * @clkreg: default value for MCICLOCK register
 283  * @clkreg_enable: enable value for MMCICLOCK register
 284  * @clkreg_8bit_bus_enable: enable value for 8 bit bus
 285  * @clkreg_neg_edge_enable: enable value for inverted data/cmd output
 286  * @cmdreg_cpsm_enable: enable value for CPSM
 287  * @cmdreg_lrsp_crc: enable value for long response with crc
 288  * @cmdreg_srsp_crc: enable value for short response with crc
 289  * @cmdreg_srsp: enable value for short response without crc
 290  * @cmdreg_stop: enable value for stop and abort transmission
 291  * @datalength_bits: number of bits in the MMCIDATALENGTH register
 292  * @fifosize: number of bytes that can be written when MMCI_TXFIFOEMPTY
 293  *            is asserted (likewise for RX)
 294  * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY
 295  *                is asserted (likewise for RX)
 296  * @data_cmd_enable: enable value for data commands.
 297  * @st_sdio: enable ST specific SDIO logic
 298  * @st_clkdiv: true if using a ST-specific clock divider algorithm
 299  * @stm32_clkdiv: true if using a STM32-specific clock divider algorithm
 300  * @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
 301  * @datactrl_mask_sdio: SDIO enable mask in datactrl register
 302  * @datactrl_blocksz: block size in power of two
 303  * @datactrl_any_blocksz: true if block any block sizes are accepted by
 304  *                hardware, such as with some SDIO traffic that send
 305  *                odd packets.
 306  * @dma_power_of_2: DMA only works with blocks that are a power of 2.
 307  * @datactrl_first: true if data must be setup before send command
 308  * @datacnt_useless: true if you could not use datacnt register to read
 309  *                   remaining data
 310  * @pwrreg_powerup: power up value for MMCIPOWER register
 311  * @f_max: maximum clk frequency supported by the controller.
 312  * @signal_direction: input/out direction of bus signals can be indicated
 313  * @pwrreg_clkgate: MMCIPOWER register must be used to gate the clock
 314  * @busy_detect: true if the variant supports busy detection on DAT0.
 315  * @busy_timeout: true if the variant starts data timer when the DPSM
 316  *                enter in Wait_R or Busy state.
 317  * @busy_dpsm_flag: bitmask enabling busy detection in the DPSM
 318  * @busy_detect_flag: bitmask identifying the bit in the MMCISTATUS register
 319  *                    indicating that the card is busy
 320  * @busy_detect_mask: bitmask identifying the bit in the MMCIMASK0 to mask for
 321  *                    getting busy end detection interrupts
 322  * @pwrreg_nopower: bits in MMCIPOWER don't controls ext. power supply
 323  * @explicit_mclk_control: enable explicit mclk control in driver.
 324  * @qcom_fifo: enables qcom specific fifo pio read logic.
 325  * @qcom_dml: enables qcom specific dma glue for dma transfers.
 326  * @reversed_irq_handling: handle data irq before cmd irq.
 327  * @mmcimask1: true if variant have a MMCIMASK1 register.
 328  * @irq_pio_mask: bitmask used to manage interrupt pio transfert in mmcimask
 329  *                register
 330  * @start_err: bitmask identifying the STARTBITERR bit inside MMCISTATUS
 331  *             register.
 332  * @opendrain: bitmask identifying the OPENDRAIN bit inside MMCIPOWER register
 333  * @dma_lli: true if variant has dma link list feature.
 334  * @supports_sdio_irq: allow SD I/O card to interrupt the host
 335  * @stm32_idmabsize_mask: stm32 sdmmc idma buffer size.
 336  * @dma_flow_controller: use peripheral as flow controller for DMA.
 337  */
 338 struct variant_data {
 339         unsigned int            clkreg;
 340         unsigned int            clkreg_enable;
 341         unsigned int            clkreg_8bit_bus_enable;
 342         unsigned int            clkreg_neg_edge_enable;
 343         unsigned int            cmdreg_cpsm_enable;
 344         unsigned int            cmdreg_lrsp_crc;
 345         unsigned int            cmdreg_srsp_crc;
 346         unsigned int            cmdreg_srsp;
 347         unsigned int            cmdreg_stop;
 348         unsigned int            datalength_bits;
 349         unsigned int            fifosize;
 350         unsigned int            fifohalfsize;
 351         unsigned int            data_cmd_enable;
 352         unsigned int            datactrl_mask_ddrmode;
 353         unsigned int            datactrl_mask_sdio;
 354         unsigned int            datactrl_blocksz;
 355         u8                      datactrl_any_blocksz:1;
 356         u8                      dma_power_of_2:1;
 357         u8                      datactrl_first:1;
 358         u8                      datacnt_useless:1;
 359         u8                      st_sdio:1;
 360         u8                      st_clkdiv:1;
 361         u8                      stm32_clkdiv:1;
 362         u32                     pwrreg_powerup;
 363         u32                     f_max;
 364         u8                      signal_direction:1;
 365         u8                      pwrreg_clkgate:1;
 366         u8                      busy_detect:1;
 367         u8                      busy_timeout:1;
 368         u32                     busy_dpsm_flag;
 369         u32                     busy_detect_flag;
 370         u32                     busy_detect_mask;
 371         u8                      pwrreg_nopower:1;
 372         u8                      explicit_mclk_control:1;
 373         u8                      qcom_fifo:1;
 374         u8                      qcom_dml:1;
 375         u8                      reversed_irq_handling:1;
 376         u8                      mmcimask1:1;
 377         unsigned int            irq_pio_mask;
 378         u32                     start_err;
 379         u32                     opendrain;
 380         u8                      dma_lli:1;
 381         bool                    supports_sdio_irq;
 382         u32                     stm32_idmabsize_mask;
 383         u32                     stm32_idmabsize_align;
 384         bool                    dma_flow_controller;
 385         void (*init)(struct mmci_host *host);
 386 };
 387
 388 /* mmci variant callbacks */
 389 struct mmci_host_ops {
 390         int (*validate_data)(struct mmci_host *host, struct mmc_data *data);
 391         int (*prep_data)(struct mmci_host *host, struct mmc_data *data,
 392                          bool next);
 393         void (*unprep_data)(struct mmci_host *host, struct mmc_data *data,
 394                             int err);
 395         u32 (*get_datactrl_cfg)(struct mmci_host *host);
 396         void (*get_next_data)(struct mmci_host *host, struct mmc_data *data);
 397         int (*dma_setup)(struct mmci_host *host);
 398         void (*dma_release)(struct mmci_host *host);
 399         int (*dma_start)(struct mmci_host *host, unsigned int *datactrl);
 400         void (*dma_finalize)(struct mmci_host *host, struct mmc_data *data);
 401         void (*dma_error)(struct mmci_host *host);
 402         void (*set_clkreg)(struct mmci_host *host, unsigned int desired);
 403         void (*set_pwrreg)(struct mmci_host *host, unsigned int pwr);
 404         bool (*busy_complete)(struct mmci_host *host, struct mmc_command *cmd, u32 status, u32 err_msk);
 405         void (*pre_sig_volt_switch)(struct mmci_host *host);
 406         int (*post_sig_volt_switch)(struct mmci_host *host, struct mmc_ios *ios);
 407 };
 408
 409 struct mmci_host {
 410         phys_addr_t             phybase;
 411         void __iomem            *base;
 412         struct mmc_request      *mrq;
 413         struct mmc_command      *cmd;
 414         struct mmc_command      stop_abort;
 415         struct mmc_data         *data;
 416         struct mmc_host         *mmc;
 417         struct clk              *clk;
 418         u8                      singleirq:1;
 419
 420         struct reset_control    *rst;
 421
 422         spinlock_t              lock;
 423
 424         unsigned int            mclk;
 425         /* cached value of requested clk in set_ios */
 426         unsigned int            clock_cache;
 427         unsigned int            cclk;
 428         u32                     pwr_reg;
 429         u32                     pwr_reg_add;
 430         u32                     clk_reg;
 431         u32                     clk_reg_add;
 432         u32                     datactrl_reg;
 433         enum mmci_busy_state    busy_state;
 434         u32                     busy_status;
 435         u32                     mask1_reg;
 436         u8                      vqmmc_enabled:1;
 437         struct mmci_platform_data *plat;
 438         struct mmc_host_ops     *mmc_ops;
 439         struct mmci_host_ops    *ops;
 440         struct variant_data     *variant;
 441         void                    *variant_priv;
 442         struct pinctrl          *pinctrl;
 443         struct pinctrl_state    *pins_opendrain;
 444
 445         u8                      hw_designer;
 446         u8                      hw_revision:4;
 447
 448         struct timer_list       timer;
 449         unsigned int            oldstat;
 450         u32                     irq_action;
 451
 452         /* pio stuff */
 453         struct sg_mapping_iter  sg_miter;
 454         unsigned int            size;
 455         int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);
 456
 457         u8                      use_dma:1;
 458         u8                      dma_in_progress:1;
 459         void                    *dma_priv;
 460
 461         s32                     next_cookie;
 462         struct delayed_work     ux500_busy_timeout_work;
 463 };
 464
 465 #define dma_inprogress(host)    ((host)->dma_in_progress)
 466
 467 void mmci_write_clkreg(struct mmci_host *host, u32 clk);
 468 void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);
 469
 470 static inline u32 mmci_dctrl_blksz(struct mmci_host *host)
 471 {
 472         return (ffs(host->data->blksz) - 1) << 4;
 473 }
 474
 475 #ifdef CONFIG_DMA_ENGINE
 476 int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data,
 477                         bool next);
 478 void mmci_dmae_unprep_data(struct mmci_host *host, struct mmc_data *data,
 479                            int err);
 480 void mmci_dmae_get_next_data(struct mmci_host *host, struct mmc_data *data);
 481 int mmci_dmae_setup(struct mmci_host *host);
 482 void mmci_dmae_release(struct mmci_host *host);
 483 int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl);
 484 void mmci_dmae_finalize(struct mmci_host *host, struct mmc_data *data);
 485 void mmci_dmae_error(struct mmci_host *host);
 486 #endif
 487
 488 #ifdef CONFIG_MMC_QCOM_DML
 489 void qcom_variant_init(struct mmci_host *host);
 490 #else
 491 static inline void qcom_variant_init(struct mmci_host *host) {}
 492 #endif
 493
 494 #ifdef CONFIG_MMC_STM32_SDMMC
 495 void sdmmc_variant_init(struct mmci_host *host);
 496 #else
 497 static inline void sdmmc_variant_init(struct mmci_host *host) {}
 498 #endif