include/linux/mmc/host.h

   1 /*
   2  *  linux/include/linux/mmc/host.h
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  *  Host driver specific definitions.
   9  */
  10 #ifndef LINUX_MMC_HOST_H
  11 #define LINUX_MMC_HOST_H
  12
  13 #include <linux/leds.h>
  14 #include <linux/mutex.h>
  15 #include <linux/timer.h>
  16 #include <linux/sched.h>
  17 #include <linux/device.h>
  18 #include <linux/fault-inject.h>
  19
  20 #include <linux/mmc/core.h>
  21 #include <linux/mmc/card.h>
  22 #include <linux/mmc/mmc.h>
  23 #include <linux/mmc/pm.h>
  24
  25 struct mmc_ios {
  26         unsigned int    clock;                  /* clock rate */
  27         unsigned short  vdd;
  28
  29 /* vdd stores the bit number of the selected voltage range from below. */
  30
  31         unsigned char   bus_mode;               /* command output mode */
  32
  33 #define MMC_BUSMODE_OPENDRAIN   1
  34 #define MMC_BUSMODE_PUSHPULL    2
  35
  36         unsigned char   chip_select;            /* SPI chip select */
  37
  38 #define MMC_CS_DONTCARE         0
  39 #define MMC_CS_HIGH             1
  40 #define MMC_CS_LOW              2
  41
  42         unsigned char   power_mode;             /* power supply mode */
  43
  44 #define MMC_POWER_OFF           0
  45 #define MMC_POWER_UP            1
  46 #define MMC_POWER_ON            2
  47 #define MMC_POWER_UNDEFINED     3
  48
  49         unsigned char   bus_width;              /* data bus width */
  50
  51 #define MMC_BUS_WIDTH_1         0
  52 #define MMC_BUS_WIDTH_4         2
  53 #define MMC_BUS_WIDTH_8         3
  54
  55         unsigned char   timing;                 /* timing specification used */
  56
  57 #define MMC_TIMING_LEGACY       0
  58 #define MMC_TIMING_MMC_HS       1
  59 #define MMC_TIMING_SD_HS        2
  60 #define MMC_TIMING_UHS_SDR12    3
  61 #define MMC_TIMING_UHS_SDR25    4
  62 #define MMC_TIMING_UHS_SDR50    5
  63 #define MMC_TIMING_UHS_SDR104   6
  64 #define MMC_TIMING_UHS_DDR50    7
  65 #define MMC_TIMING_MMC_DDR52    8
  66 #define MMC_TIMING_MMC_HS200    9
  67 #define MMC_TIMING_MMC_HS400    10
  68
  69         unsigned char   signal_voltage;         /* signalling voltage (1.8V or 3.3V) */
  70
  71 #define MMC_SIGNAL_VOLTAGE_330  0
  72 #define MMC_SIGNAL_VOLTAGE_180  1
  73 #define MMC_SIGNAL_VOLTAGE_120  2
  74
  75         unsigned char   drv_type;               /* driver type (A, B, C, D) */
  76
  77 #define MMC_SET_DRIVER_TYPE_B   0
  78 #define MMC_SET_DRIVER_TYPE_A   1
  79 #define MMC_SET_DRIVER_TYPE_C   2
  80 #define MMC_SET_DRIVER_TYPE_D   3
  81
  82         bool enhanced_strobe;                   /* hs400es selection */
  83 };
  84
  85 struct mmc_host_ops {
  86         /*
  87          * It is optional for the host to implement pre_req and post_req in
  88          * order to support double buffering of requests (prepare one
  89          * request while another request is active).
  90          * pre_req() must always be followed by a post_req().
  91          * To undo a call made to pre_req(), call post_req() with
  92          * a nonzero err condition.
  93          */
  94         void    (*post_req)(struct mmc_host *host, struct mmc_request *req,
  95                             int err);
  96         void    (*pre_req)(struct mmc_host *host, struct mmc_request *req,
  97                            bool is_first_req);
  98         void    (*request)(struct mmc_host *host, struct mmc_request *req);
  99
 100         /*
 101          * Avoid calling the next three functions too often or in a "fast
 102          * path", since underlaying controller might implement them in an
 103          * expensive and/or slow way. Also note that these functions might
 104          * sleep, so don't call them in the atomic contexts!
 105          */
 106
 107         /*
 108          * Notes to the set_ios callback:
 109          * ios->clock might be 0. For some controllers, setting 0Hz
 110          * as any other frequency works. However, some controllers
 111          * explicitly need to disable the clock. Otherwise e.g. voltage
 112          * switching might fail because the SDCLK is not really quiet.
 113          */
 114         void    (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
 115
 116         /*
 117          * Return values for the get_ro callback should be:
 118          *   0 for a read/write card
 119          *   1 for a read-only card
 120          *   -ENOSYS when not supported (equal to NULL callback)
 121          *   or a negative errno value when something bad happened
 122          */
 123         int     (*get_ro)(struct mmc_host *host);
 124
 125         /*
 126          * Return values for the get_cd callback should be:
 127          *   0 for a absent card
 128          *   1 for a present card
 129          *   -ENOSYS when not supported (equal to NULL callback)
 130          *   or a negative errno value when something bad happened
 131          */
 132         int     (*get_cd)(struct mmc_host *host);
 133
 134         void    (*enable_sdio_irq)(struct mmc_host *host, int enable);
 135
 136         /* optional callback for HC quirks */
 137         void    (*init_card)(struct mmc_host *host, struct mmc_card *card);
 138
 139         int     (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
 140
 141         /* Check if the card is pulling dat[0:3] low */
 142         int     (*card_busy)(struct mmc_host *host);
 143
 144         /* The tuning command opcode value is different for SD and eMMC cards */
 145         int     (*execute_tuning)(struct mmc_host *host, u32 opcode);
 146
 147         /* Prepare HS400 target operating frequency depending host driver */
 148         int     (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
 149         /* Prepare enhanced strobe depending host driver */
 150         void    (*hs400_enhanced_strobe)(struct mmc_host *host,
 151                                          struct mmc_ios *ios);
 152         int     (*select_drive_strength)(struct mmc_card *card,
 153                                          unsigned int max_dtr, int host_drv,
 154                                          int card_drv, int *drv_type);
 155         void    (*hw_reset)(struct mmc_host *host);
 156         void    (*card_event)(struct mmc_host *host);
 157
 158         /*
 159          * Optional callback to support controllers with HW issues for multiple
 160          * I/O. Returns the number of supported blocks for the request.
 161          */
 162         int     (*multi_io_quirk)(struct mmc_card *card,
 163                                   unsigned int direction, int blk_size);
 164 };
 165
 166 struct mmc_card;
 167 struct device;
 168
 169 struct mmc_async_req {
 170         /* active mmc request */
 171         struct mmc_request      *mrq;
 172         /*
 173          * Check error status of completed mmc request.
 174          * Returns 0 if success otherwise non zero.
 175          */
 176         int (*err_check) (struct mmc_card *, struct mmc_async_req *);
 177 };
 178
 179 /**
 180  * struct mmc_slot - MMC slot functions
 181  *
 182  * @cd_irq:             MMC/SD-card slot hotplug detection IRQ or -EINVAL
 183  * @handler_priv:       MMC/SD-card slot context
 184  *
 185  * Some MMC/SD host controllers implement slot-functions like card and
 186  * write-protect detection natively. However, a large number of controllers
 187  * leave these functions to the CPU. This struct provides a hook to attach
 188  * such slot-function drivers.
 189  */
 190 struct mmc_slot {
 191         int cd_irq;
 192         void *handler_priv;
 193 };
 194
 195 /**
 196  * mmc_context_info - synchronization details for mmc context
 197  * @is_done_rcv         wake up reason was done request
 198  * @is_new_req          wake up reason was new request
 199  * @is_waiting_last_req mmc context waiting for single running request
 200  * @wait                wait queue
 201  * @lock                lock to protect data fields
 202  */
 203 struct mmc_context_info {
 204         bool                    is_done_rcv;
 205         bool                    is_new_req;
 206         bool                    is_waiting_last_req;
 207         wait_queue_head_t       wait;
 208         spinlock_t              lock;
 209 };
 210
 211 struct regulator;
 212 struct mmc_pwrseq;
 213
 214 struct mmc_supply {
 215         struct regulator *vmmc;         /* Card power supply */
 216         struct regulator *vqmmc;        /* Optional Vccq supply */
 217 };
 218
 219 struct mmc_host {
 220         struct device           *parent;
 221         struct device           class_dev;
 222         int                     index;
 223         const struct mmc_host_ops *ops;
 224         struct mmc_pwrseq       *pwrseq;
 225         unsigned int            f_min;
 226         unsigned int            f_max;
 227         unsigned int            f_init;
 228         u32                     ocr_avail;
 229         u32                     ocr_avail_sdio; /* SDIO-specific OCR */
 230         u32                     ocr_avail_sd;   /* SD-specific OCR */
 231         u32                     ocr_avail_mmc;  /* MMC-specific OCR */
 232 #ifdef CONFIG_PM_SLEEP
 233         struct notifier_block   pm_notify;
 234 #endif
 235         u32                     max_current_330;
 236         u32                     max_current_300;
 237         u32                     max_current_180;
 238
 239 #define MMC_VDD_165_195         0x00000080      /* VDD voltage 1.65 - 1.95 */
 240 #define MMC_VDD_20_21           0x00000100      /* VDD voltage 2.0 ~ 2.1 */
 241 #define MMC_VDD_21_22           0x00000200      /* VDD voltage 2.1 ~ 2.2 */
 242 #define MMC_VDD_22_23           0x00000400      /* VDD voltage 2.2 ~ 2.3 */
 243 #define MMC_VDD_23_24           0x00000800      /* VDD voltage 2.3 ~ 2.4 */
 244 #define MMC_VDD_24_25           0x00001000      /* VDD voltage 2.4 ~ 2.5 */
 245 #define MMC_VDD_25_26           0x00002000      /* VDD voltage 2.5 ~ 2.6 */
 246 #define MMC_VDD_26_27           0x00004000      /* VDD voltage 2.6 ~ 2.7 */
 247 #define MMC_VDD_27_28           0x00008000      /* VDD voltage 2.7 ~ 2.8 */
 248 #define MMC_VDD_28_29           0x00010000      /* VDD voltage 2.8 ~ 2.9 */
 249 #define MMC_VDD_29_30           0x00020000      /* VDD voltage 2.9 ~ 3.0 */
 250 #define MMC_VDD_30_31           0x00040000      /* VDD voltage 3.0 ~ 3.1 */
 251 #define MMC_VDD_31_32           0x00080000      /* VDD voltage 3.1 ~ 3.2 */
 252 #define MMC_VDD_32_33           0x00100000      /* VDD voltage 3.2 ~ 3.3 */
 253 #define MMC_VDD_33_34           0x00200000      /* VDD voltage 3.3 ~ 3.4 */
 254 #define MMC_VDD_34_35           0x00400000      /* VDD voltage 3.4 ~ 3.5 */
 255 #define MMC_VDD_35_36           0x00800000      /* VDD voltage 3.5 ~ 3.6 */
 256
 257         u32                     caps;           /* Host capabilities */
 258
 259 #define MMC_CAP_4_BIT_DATA      (1 << 0)        /* Can the host do 4 bit transfers */
 260 #define MMC_CAP_MMC_HIGHSPEED   (1 << 1)        /* Can do MMC high-speed timing */
 261 #define MMC_CAP_SD_HIGHSPEED    (1 << 2)        /* Can do SD high-speed timing */
 262 #define MMC_CAP_SDIO_IRQ        (1 << 3)        /* Can signal pending SDIO IRQs */
 263 #define MMC_CAP_SPI             (1 << 4)        /* Talks only SPI protocols */
 264 #define MMC_CAP_NEEDS_POLL      (1 << 5)        /* Needs polling for card-detection */
 265 #define MMC_CAP_8_BIT_DATA      (1 << 6)        /* Can the host do 8 bit transfers */
 266 #define MMC_CAP_AGGRESSIVE_PM   (1 << 7)        /* Suspend (e)MMC/SD at idle  */
 267 #define MMC_CAP_NONREMOVABLE    (1 << 8)        /* Nonremovable e.g. eMMC */
 268 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9)        /* Waits while card is busy */
 269 #define MMC_CAP_ERASE           (1 << 10)       /* Allow erase/trim commands */
 270 #define MMC_CAP_1_8V_DDR        (1 << 11)       /* can support */
 271                                                 /* DDR mode at 1.8V */
 272 #define MMC_CAP_1_2V_DDR        (1 << 12)       /* can support */
 273                                                 /* DDR mode at 1.2V */
 274 #define MMC_CAP_POWER_OFF_CARD  (1 << 13)       /* Can power off after boot */
 275 #define MMC_CAP_BUS_WIDTH_TEST  (1 << 14)       /* CMD14/CMD19 bus width ok */
 276 #define MMC_CAP_UHS_SDR12       (1 << 15)       /* Host supports UHS SDR12 mode */
 277 #define MMC_CAP_UHS_SDR25       (1 << 16)       /* Host supports UHS SDR25 mode */
 278 #define MMC_CAP_UHS_SDR50       (1 << 17)       /* Host supports UHS SDR50 mode */
 279 #define MMC_CAP_UHS_SDR104      (1 << 18)       /* Host supports UHS SDR104 mode */
 280 #define MMC_CAP_UHS_DDR50       (1 << 19)       /* Host supports UHS DDR50 mode */
 281 #define MMC_CAP_DRIVER_TYPE_A   (1 << 23)       /* Host supports Driver Type A */
 282 #define MMC_CAP_DRIVER_TYPE_C   (1 << 24)       /* Host supports Driver Type C */
 283 #define MMC_CAP_DRIVER_TYPE_D   (1 << 25)       /* Host supports Driver Type D */
 284 #define MMC_CAP_CMD23           (1 << 30)       /* CMD23 supported. */
 285 #define MMC_CAP_HW_RESET        (1 << 31)       /* Hardware reset */
 286
 287         u32                     caps2;          /* More host capabilities */
 288
 289 #define MMC_CAP2_BOOTPART_NOACC (1 << 0)        /* Boot partition no access */
 290 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2)        /* Can do full power cycle */
 291 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5)        /* can support */
 292 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6)        /* can support */
 293 #define MMC_CAP2_HS200          (MMC_CAP2_HS200_1_8V_SDR | \
 294                                  MMC_CAP2_HS200_1_2V_SDR)
 295 #define MMC_CAP2_HC_ERASE_SZ    (1 << 9)        /* High-capacity erase size */
 296 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10)       /* Card-detect signal active high */
 297 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11)       /* Write-protect signal active high */
 298 #define MMC_CAP2_PACKED_RD      (1 << 12)       /* Allow packed read */
 299 #define MMC_CAP2_PACKED_WR      (1 << 13)       /* Allow packed write */
 300 #define MMC_CAP2_PACKED_CMD     (MMC_CAP2_PACKED_RD | \
 301                                  MMC_CAP2_PACKED_WR)
 302 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14)   /* Don't power up before scan */
 303 #define MMC_CAP2_HS400_1_8V     (1 << 15)       /* Can support HS400 1.8V */
 304 #define MMC_CAP2_HS400_1_2V     (1 << 16)       /* Can support HS400 1.2V */
 305 #define MMC_CAP2_HS400          (MMC_CAP2_HS400_1_8V | \
 306                                  MMC_CAP2_HS400_1_2V)
 307 #define MMC_CAP2_HSX00_1_2V     (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
 308 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
 309 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18)     /* No physical write protect pin, assume that card is always read-write */
 310 #define MMC_CAP2_NO_SDIO        (1 << 19)       /* Do not send SDIO commands during initialization */
 311 #define MMC_CAP2_HS400_ES       (1 << 20)       /* Host supports enhanced strobe */
 312 #define MMC_CAP2_NO_SD          (1 << 21)       /* Do not send SD commands during initialization */
 313 #define MMC_CAP2_NO_MMC         (1 << 22)       /* Do not send (e)MMC commands during initialization */
 314
 315         mmc_pm_flag_t           pm_caps;        /* supported pm features */
 316
 317         /* host specific block data */
 318         unsigned int            max_seg_size;   /* see blk_queue_max_segment_size */
 319         unsigned short          max_segs;       /* see blk_queue_max_segments */
 320         unsigned short          unused;
 321         unsigned int            max_req_size;   /* maximum number of bytes in one req */
 322         unsigned int            max_blk_size;   /* maximum size of one mmc block */
 323         unsigned int            max_blk_count;  /* maximum number of blocks in one req */
 324         unsigned int            max_busy_timeout; /* max busy timeout in ms */
 325
 326         /* private data */
 327         spinlock_t              lock;           /* lock for claim and bus ops */
 328
 329         struct mmc_ios          ios;            /* current io bus settings */
 330
 331         /* group bitfields together to minimize padding */
 332         unsigned int            use_spi_crc:1;
 333         unsigned int            claimed:1;      /* host exclusively claimed */
 334         unsigned int            bus_dead:1;     /* bus has been released */
 335 #ifdef CONFIG_MMC_DEBUG
 336         unsigned int            removed:1;      /* host is being removed */
 337 #endif
 338         unsigned int            can_retune:1;   /* re-tuning can be used */
 339         unsigned int            doing_retune:1; /* re-tuning in progress */
 340         unsigned int            retune_now:1;   /* do re-tuning at next req */
 341         unsigned int            retune_paused:1; /* re-tuning is temporarily disabled */
 342
 343         int                     rescan_disable; /* disable card detection */
 344         int                     rescan_entered; /* used with nonremovable devices */
 345
 346         int                     need_retune;    /* re-tuning is needed */
 347         int                     hold_retune;    /* hold off re-tuning */
 348         unsigned int            retune_period;  /* re-tuning period in secs */
 349         struct timer_list       retune_timer;   /* for periodic re-tuning */
 350
 351         bool                    trigger_card_event; /* card_event necessary */
 352
 353         struct mmc_card         *card;          /* device attached to this host */
 354
 355         wait_queue_head_t       wq;
 356         struct task_struct      *claimer;       /* task that has host claimed */
 357         int                     claim_cnt;      /* "claim" nesting count */
 358
 359         struct delayed_work     detect;
 360         int                     detect_change;  /* card detect flag */
 361         struct mmc_slot         slot;
 362
 363         const struct mmc_bus_ops *bus_ops;      /* current bus driver */
 364         unsigned int            bus_refs;       /* reference counter */
 365
 366         unsigned int            sdio_irqs;
 367         struct task_struct      *sdio_irq_thread;
 368         bool                    sdio_irq_pending;
 369         atomic_t                sdio_irq_thread_abort;
 370
 371         mmc_pm_flag_t           pm_flags;       /* requested pm features */
 372
 373         struct led_trigger      *led;           /* activity led */
 374
 375 #ifdef CONFIG_REGULATOR
 376         bool                    regulator_enabled; /* regulator state */
 377 #endif
 378         struct mmc_supply       supply;
 379
 380         struct dentry           *debugfs_root;
 381
 382         struct mmc_async_req    *areq;          /* active async req */
 383         struct mmc_context_info context_info;   /* async synchronization info */
 384
 385 #ifdef CONFIG_FAIL_MMC_REQUEST
 386         struct fault_attr       fail_mmc_request;
 387 #endif
 388
 389         unsigned int            actual_clock;   /* Actual HC clock rate */
 390
 391         unsigned int            slotno; /* used for sdio acpi binding */
 392
 393         int                     dsr_req;        /* DSR value is valid */
 394         u32                     dsr;    /* optional driver stage (DSR) value */
 395
 396         unsigned long           private[0] ____cacheline_aligned;
 397 };
 398
 399 struct mmc_host *mmc_alloc_host(int extra, struct device *);
 400 int mmc_add_host(struct mmc_host *);
 401 void mmc_remove_host(struct mmc_host *);
 402 void mmc_free_host(struct mmc_host *);
 403 int mmc_of_parse(struct mmc_host *host);
 404
 405 static inline void *mmc_priv(struct mmc_host *host)
 406 {
 407         return (void *)host->private;
 408 }
 409
 410 #define mmc_host_is_spi(host)   ((host)->caps & MMC_CAP_SPI)
 411
 412 #define mmc_dev(x)      ((x)->parent)
 413 #define mmc_classdev(x) (&(x)->class_dev)
 414 #define mmc_hostname(x) (dev_name(&(x)->class_dev))
 415
 416 int mmc_power_save_host(struct mmc_host *host);
 417 int mmc_power_restore_host(struct mmc_host *host);
 418
 419 void mmc_detect_change(struct mmc_host *, unsigned long delay);
 420 void mmc_request_done(struct mmc_host *, struct mmc_request *);
 421
 422 static inline void mmc_signal_sdio_irq(struct mmc_host *host)
 423 {
 424         host->ops->enable_sdio_irq(host, 0);
 425         host->sdio_irq_pending = true;
 426         if (host->sdio_irq_thread)
 427                 wake_up_process(host->sdio_irq_thread);
 428 }
 429
 430 void sdio_run_irqs(struct mmc_host *host);
 431
 432 #ifdef CONFIG_REGULATOR
 433 int mmc_regulator_get_ocrmask(struct regulator *supply);
 434 int mmc_regulator_set_ocr(struct mmc_host *mmc,
 435                         struct regulator *supply,
 436                         unsigned short vdd_bit);
 437 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
 438 #else
 439 static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
 440 {
 441         return 0;
 442 }
 443
 444 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
 445                                  struct regulator *supply,
 446                                  unsigned short vdd_bit)
 447 {
 448         return 0;
 449 }
 450
 451 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,
 452                                           struct mmc_ios *ios)
 453 {
 454         return -EINVAL;
 455 }
 456 #endif
 457
 458 int mmc_regulator_get_supply(struct mmc_host *mmc);
 459
 460 static inline int mmc_card_is_removable(struct mmc_host *host)
 461 {
 462         return !(host->caps & MMC_CAP_NONREMOVABLE);
 463 }
 464
 465 static inline int mmc_card_keep_power(struct mmc_host *host)
 466 {
 467         return host->pm_flags & MMC_PM_KEEP_POWER;
 468 }
 469
 470 static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
 471 {
 472         return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
 473 }
 474
 475 static inline int mmc_host_cmd23(struct mmc_host *host)
 476 {
 477         return host->caps & MMC_CAP_CMD23;
 478 }
 479
 480 static inline int mmc_boot_partition_access(struct mmc_host *host)
 481 {
 482         return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
 483 }
 484
 485 static inline int mmc_host_uhs(struct mmc_host *host)
 486 {
 487         return host->caps &
 488                 (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
 489                  MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
 490                  MMC_CAP_UHS_DDR50);
 491 }
 492
 493 static inline int mmc_host_packed_wr(struct mmc_host *host)
 494 {
 495         return host->caps2 & MMC_CAP2_PACKED_WR;
 496 }
 497
 498 static inline int mmc_card_hs(struct mmc_card *card)
 499 {
 500         return card->host->ios.timing == MMC_TIMING_SD_HS ||
 501                 card->host->ios.timing == MMC_TIMING_MMC_HS;
 502 }
 503
 504 static inline int mmc_card_uhs(struct mmc_card *card)
 505 {
 506         return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 &&
 507                 card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
 508 }
 509
 510 static inline bool mmc_card_hs200(struct mmc_card *card)
 511 {
 512         return card->host->ios.timing == MMC_TIMING_MMC_HS200;
 513 }
 514
 515 static inline bool mmc_card_ddr52(struct mmc_card *card)
 516 {
 517         return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
 518 }
 519
 520 static inline bool mmc_card_hs400(struct mmc_card *card)
 521 {
 522         return card->host->ios.timing == MMC_TIMING_MMC_HS400;
 523 }
 524
 525 static inline bool mmc_card_hs400es(struct mmc_card *card)
 526 {
 527         return card->host->ios.enhanced_strobe;
 528 }
 529
 530 void mmc_retune_timer_stop(struct mmc_host *host);
 531
 532 static inline void mmc_retune_needed(struct mmc_host *host)
 533 {
 534         if (host->can_retune)
 535                 host->need_retune = 1;
 536 }
 537
 538 static inline void mmc_retune_recheck(struct mmc_host *host)
 539 {
 540         if (host->hold_retune <= 1)
 541                 host->retune_now = 1;
 542 }
 543
 544 void mmc_retune_pause(struct mmc_host *host);
 545 void mmc_retune_unpause(struct mmc_host *host);
 546
 547 #endif /* LINUX_MMC_HOST_H */