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/sched.h> 14 #include <linux/device.h> 15 #include <linux/fault-inject.h> 16 17 #include <linux/mmc/core.h> 18 #include <linux/mmc/card.h> 19 #include <linux/mmc/pm.h> 20 #include <linux/dma-direction.h> 21 22 struct mmc_ios { 23 unsigned int clock; /* clock rate */ 24 unsigned short vdd; 25 26 /* vdd stores the bit number of the selected voltage range from below. */ 27 28 unsigned char bus_mode; /* command output mode */ 29 30 #define MMC_BUSMODE_OPENDRAIN 1 31 #define MMC_BUSMODE_PUSHPULL 2 32 33 unsigned char chip_select; /* SPI chip select */ 34 35 #define MMC_CS_DONTCARE 0 36 #define MMC_CS_HIGH 1 37 #define MMC_CS_LOW 2 38 39 unsigned char power_mode; /* power supply mode */ 40 41 #define MMC_POWER_OFF 0 42 #define MMC_POWER_UP 1 43 #define MMC_POWER_ON 2 44 #define MMC_POWER_UNDEFINED 3 45 46 unsigned char bus_width; /* data bus width */ 47 48 #define MMC_BUS_WIDTH_1 0 49 #define MMC_BUS_WIDTH_4 2 50 #define MMC_BUS_WIDTH_8 3 51 52 unsigned char timing; /* timing specification used */ 53 54 #define MMC_TIMING_LEGACY 0 55 #define MMC_TIMING_MMC_HS 1 56 #define MMC_TIMING_SD_HS 2 57 #define MMC_TIMING_UHS_SDR12 3 58 #define MMC_TIMING_UHS_SDR25 4 59 #define MMC_TIMING_UHS_SDR50 5 60 #define MMC_TIMING_UHS_SDR104 6 61 #define MMC_TIMING_UHS_DDR50 7 62 #define MMC_TIMING_MMC_DDR52 8 63 #define MMC_TIMING_MMC_HS200 9 64 #define MMC_TIMING_MMC_HS400 10 65 66 unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */ 67 68 #define MMC_SIGNAL_VOLTAGE_330 0 69 #define MMC_SIGNAL_VOLTAGE_180 1 70 #define MMC_SIGNAL_VOLTAGE_120 2 71 72 unsigned char drv_type; /* driver type (A, B, C, D) */ 73 74 #define MMC_SET_DRIVER_TYPE_B 0 75 #define MMC_SET_DRIVER_TYPE_A 1 76 #define MMC_SET_DRIVER_TYPE_C 2 77 #define MMC_SET_DRIVER_TYPE_D 3 78 79 bool enhanced_strobe; /* hs400es selection */ 80 }; 81 82 struct mmc_host; 83 84 struct mmc_host_ops { 85 /* 86 * It is optional for the host to implement pre_req and post_req in 87 * order to support double buffering of requests (prepare one 88 * request while another request is active). 89 * pre_req() must always be followed by a post_req(). 90 * To undo a call made to pre_req(), call post_req() with 91 * a nonzero err condition. 92 */ 93 void (*post_req)(struct mmc_host *host, struct mmc_request *req, 94 int err); 95 void (*pre_req)(struct mmc_host *host, struct mmc_request *req); 96 void (*request)(struct mmc_host *host, struct mmc_request *req); 97 98 /* 99 * Avoid calling the next three functions too often or in a "fast 100 * path", since underlaying controller might implement them in an 101 * expensive and/or slow way. Also note that these functions might 102 * sleep, so don't call them in the atomic contexts! 103 */ 104 105 /* 106 * Notes to the set_ios callback: 107 * ios->clock might be 0. For some controllers, setting 0Hz 108 * as any other frequency works. However, some controllers 109 * explicitly need to disable the clock. Otherwise e.g. voltage 110 * switching might fail because the SDCLK is not really quiet. 111 */ 112 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); 113 114 /* 115 * Return values for the get_ro callback should be: 116 * 0 for a read/write card 117 * 1 for a read-only card 118 * -ENOSYS when not supported (equal to NULL callback) 119 * or a negative errno value when something bad happened 120 */ 121 int (*get_ro)(struct mmc_host *host); 122 123 /* 124 * Return values for the get_cd callback should be: 125 * 0 for a absent card 126 * 1 for a present card 127 * -ENOSYS when not supported (equal to NULL callback) 128 * or a negative errno value when something bad happened 129 */ 130 int (*get_cd)(struct mmc_host *host); 131 132 void (*enable_sdio_irq)(struct mmc_host *host, int enable); 133 void (*ack_sdio_irq)(struct mmc_host *host); 134 135 /* optional callback for HC quirks */ 136 void (*init_card)(struct mmc_host *host, struct mmc_card *card); 137 138 int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios); 139 140 /* Check if the card is pulling dat[0:3] low */ 141 int (*card_busy)(struct mmc_host *host); 142 143 /* The tuning command opcode value is different for SD and eMMC cards */ 144 int (*execute_tuning)(struct mmc_host *host, u32 opcode); 145 146 /* Prepare HS400 target operating frequency depending host driver */ 147 int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios); 148 /* Prepare enhanced strobe depending host driver */ 149 void (*hs400_enhanced_strobe)(struct mmc_host *host, 150 struct mmc_ios *ios); 151 int (*select_drive_strength)(struct mmc_card *card, 152 unsigned int max_dtr, int host_drv, 153 int card_drv, int *drv_type); 154 void (*hw_reset)(struct mmc_host *host); 155 void (*card_event)(struct mmc_host *host); 156 157 /* 158 * Optional callback to support controllers with HW issues for multiple 159 * I/O. Returns the number of supported blocks for the request. 160 */ 161 int (*multi_io_quirk)(struct mmc_card *card, 162 unsigned int direction, int blk_size); 163 }; 164 165 struct mmc_cqe_ops { 166 /* Allocate resources, and make the CQE operational */ 167 int (*cqe_enable)(struct mmc_host *host, struct mmc_card *card); 168 /* Free resources, and make the CQE non-operational */ 169 void (*cqe_disable)(struct mmc_host *host); 170 /* 171 * Issue a read, write or DCMD request to the CQE. Also deal with the 172 * effect of ->cqe_off(). 173 */ 174 int (*cqe_request)(struct mmc_host *host, struct mmc_request *mrq); 175 /* Free resources (e.g. DMA mapping) associated with the request */ 176 void (*cqe_post_req)(struct mmc_host *host, struct mmc_request *mrq); 177 /* 178 * Prepare the CQE and host controller to accept non-CQ commands. There 179 * is no corresponding ->cqe_on(), instead ->cqe_request() is required 180 * to deal with that. 181 */ 182 void (*cqe_off)(struct mmc_host *host); 183 /* 184 * Wait for all CQE tasks to complete. Return an error if recovery 185 * becomes necessary. 186 */ 187 int (*cqe_wait_for_idle)(struct mmc_host *host); 188 /* 189 * Notify CQE that a request has timed out. Return false if the request 190 * completed or true if a timeout happened in which case indicate if 191 * recovery is needed. 192 */ 193 bool (*cqe_timeout)(struct mmc_host *host, struct mmc_request *mrq, 194 bool *recovery_needed); 195 /* 196 * Stop all CQE activity and prepare the CQE and host controller to 197 * accept recovery commands. 198 */ 199 void (*cqe_recovery_start)(struct mmc_host *host); 200 /* 201 * Clear the queue and call mmc_cqe_request_done() on all requests. 202 * Requests that errored will have the error set on the mmc_request 203 * (data->error or cmd->error for DCMD). Requests that did not error 204 * will have zero data bytes transferred. 205 */ 206 void (*cqe_recovery_finish)(struct mmc_host *host); 207 }; 208 209 struct mmc_async_req { 210 /* active mmc request */ 211 struct mmc_request *mrq; 212 /* 213 * Check error status of completed mmc request. 214 * Returns 0 if success otherwise non zero. 215 */ 216 enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *); 217 }; 218 219 /** 220 * struct mmc_slot - MMC slot functions 221 * 222 * @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL 223 * @handler_priv: MMC/SD-card slot context 224 * 225 * Some MMC/SD host controllers implement slot-functions like card and 226 * write-protect detection natively. However, a large number of controllers 227 * leave these functions to the CPU. This struct provides a hook to attach 228 * such slot-function drivers. 229 */ 230 struct mmc_slot { 231 int cd_irq; 232 bool cd_wake_enabled; 233 void *handler_priv; 234 }; 235 236 /** 237 * mmc_context_info - synchronization details for mmc context 238 * @is_done_rcv wake up reason was done request 239 * @is_new_req wake up reason was new request 240 * @is_waiting_last_req mmc context waiting for single running request 241 * @wait wait queue 242 */ 243 struct mmc_context_info { 244 bool is_done_rcv; 245 bool is_new_req; 246 bool is_waiting_last_req; 247 wait_queue_head_t wait; 248 }; 249 250 struct regulator; 251 struct mmc_pwrseq; 252 253 struct mmc_supply { 254 struct regulator *vmmc; /* Card power supply */ 255 struct regulator *vqmmc; /* Optional Vccq supply */ 256 }; 257 258 struct mmc_ctx { 259 struct task_struct *task; 260 }; 261 262 struct mmc_host { 263 struct device *parent; 264 struct device class_dev; 265 int index; 266 const struct mmc_host_ops *ops; 267 struct mmc_pwrseq *pwrseq; 268 unsigned int f_min; 269 unsigned int f_max; 270 unsigned int f_init; 271 u32 ocr_avail; 272 u32 ocr_avail_sdio; /* SDIO-specific OCR */ 273 u32 ocr_avail_sd; /* SD-specific OCR */ 274 u32 ocr_avail_mmc; /* MMC-specific OCR */ 275 #ifdef CONFIG_PM_SLEEP 276 struct notifier_block pm_notify; 277 #endif 278 u32 max_current_330; 279 u32 max_current_300; 280 u32 max_current_180; 281 282 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ 283 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ 284 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ 285 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ 286 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ 287 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ 288 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ 289 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ 290 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ 291 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ 292 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ 293 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ 294 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ 295 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ 296 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ 297 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ 298 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ 299 300 u32 caps; /* Host capabilities */ 301 302 #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ 303 #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ 304 #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */ 305 #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ 306 #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ 307 #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ 308 #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ 309 #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */ 310 #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */ 311 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */ 312 #define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */ 313 #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */ 314 #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */ 315 #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */ 316 #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */ 317 #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */ 318 #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */ 319 #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */ 320 #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */ 321 #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */ 322 #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */ 323 /* (1 << 21) is free for reuse */ 324 #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ 325 #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ 326 #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ 327 #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */ 328 #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */ 329 #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ 330 #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ 331 332 u32 caps2; /* More host capabilities */ 333 334 #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ 335 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */ 336 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */ 337 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */ 338 #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \ 339 MMC_CAP2_HS200_1_2V_SDR) 340 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */ 341 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */ 342 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */ 343 #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */ 344 #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */ 345 #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \ 346 MMC_CAP2_HS400_1_2V) 347 #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V) 348 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17) 349 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */ 350 #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */ 351 #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */ 352 #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */ 353 #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */ 354 #define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */ 355 #define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */ 356 357 int fixed_drv_type; /* fixed driver type for non-removable media */ 358 359 mmc_pm_flag_t pm_caps; /* supported pm features */ 360 361 /* host specific block data */ 362 unsigned int max_seg_size; /* see blk_queue_max_segment_size */ 363 unsigned short max_segs; /* see blk_queue_max_segments */ 364 unsigned short unused; 365 unsigned int max_req_size; /* maximum number of bytes in one req */ 366 unsigned int max_blk_size; /* maximum size of one mmc block */ 367 unsigned int max_blk_count; /* maximum number of blocks in one req */ 368 unsigned int max_busy_timeout; /* max busy timeout in ms */ 369 370 /* private data */ 371 spinlock_t lock; /* lock for claim and bus ops */ 372 373 struct mmc_ios ios; /* current io bus settings */ 374 375 /* group bitfields together to minimize padding */ 376 unsigned int use_spi_crc:1; 377 unsigned int claimed:1; /* host exclusively claimed */ 378 unsigned int bus_dead:1; /* bus has been released */ 379 unsigned int can_retune:1; /* re-tuning can be used */ 380 unsigned int doing_retune:1; /* re-tuning in progress */ 381 unsigned int retune_now:1; /* do re-tuning at next req */ 382 unsigned int retune_paused:1; /* re-tuning is temporarily disabled */ 383 384 int rescan_disable; /* disable card detection */ 385 int rescan_entered; /* used with nonremovable devices */ 386 387 int need_retune; /* re-tuning is needed */ 388 int hold_retune; /* hold off re-tuning */ 389 unsigned int retune_period; /* re-tuning period in secs */ 390 struct timer_list retune_timer; /* for periodic re-tuning */ 391 392 bool trigger_card_event; /* card_event necessary */ 393 394 struct mmc_card *card; /* device attached to this host */ 395 396 wait_queue_head_t wq; 397 struct mmc_ctx *claimer; /* context that has host claimed */ 398 int claim_cnt; /* "claim" nesting count */ 399 struct mmc_ctx default_ctx; /* default context */ 400 401 struct delayed_work detect; 402 int detect_change; /* card detect flag */ 403 struct mmc_slot slot; 404 405 const struct mmc_bus_ops *bus_ops; /* current bus driver */ 406 unsigned int bus_refs; /* reference counter */ 407 408 unsigned int sdio_irqs; 409 struct task_struct *sdio_irq_thread; 410 struct delayed_work sdio_irq_work; 411 bool sdio_irq_pending; 412 atomic_t sdio_irq_thread_abort; 413 414 mmc_pm_flag_t pm_flags; /* requested pm features */ 415 416 struct led_trigger *led; /* activity led */ 417 418 #ifdef CONFIG_REGULATOR 419 bool regulator_enabled; /* regulator state */ 420 #endif 421 struct mmc_supply supply; 422 423 struct dentry *debugfs_root; 424 425 struct mmc_async_req *areq; /* active async req */ 426 struct mmc_context_info context_info; /* async synchronization info */ 427 428 /* Ongoing data transfer that allows commands during transfer */ 429 struct mmc_request *ongoing_mrq; 430 431 #ifdef CONFIG_FAIL_MMC_REQUEST 432 struct fault_attr fail_mmc_request; 433 #endif 434 435 unsigned int actual_clock; /* Actual HC clock rate */ 436 437 unsigned int slotno; /* used for sdio acpi binding */ 438 439 int dsr_req; /* DSR value is valid */ 440 u32 dsr; /* optional driver stage (DSR) value */ 441 442 /* Command Queue Engine (CQE) support */ 443 const struct mmc_cqe_ops *cqe_ops; 444 void *cqe_private; 445 int cqe_qdepth; 446 bool cqe_enabled; 447 bool cqe_on; 448 449 unsigned long private[0] ____cacheline_aligned; 450 }; 451 452 struct device_node; 453 454 struct mmc_host *mmc_alloc_host(int extra, struct device *); 455 int mmc_add_host(struct mmc_host *); 456 void mmc_remove_host(struct mmc_host *); 457 void mmc_free_host(struct mmc_host *); 458 int mmc_of_parse(struct mmc_host *host); 459 int mmc_of_parse_voltage(struct device_node *np, u32 *mask); 460 461 static inline void *mmc_priv(struct mmc_host *host) 462 { 463 return (void *)host->private; 464 } 465 466 #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) 467 468 #define mmc_dev(x) ((x)->parent) 469 #define mmc_classdev(x) (&(x)->class_dev) 470 #define mmc_hostname(x) (dev_name(&(x)->class_dev)) 471 472 int mmc_power_save_host(struct mmc_host *host); 473 int mmc_power_restore_host(struct mmc_host *host); 474 475 void mmc_detect_change(struct mmc_host *, unsigned long delay); 476 void mmc_request_done(struct mmc_host *, struct mmc_request *); 477 void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq); 478 479 void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq); 480 481 static inline void mmc_signal_sdio_irq(struct mmc_host *host) 482 { 483 host->ops->enable_sdio_irq(host, 0); 484 host->sdio_irq_pending = true; 485 if (host->sdio_irq_thread) 486 wake_up_process(host->sdio_irq_thread); 487 } 488 489 void sdio_run_irqs(struct mmc_host *host); 490 void sdio_signal_irq(struct mmc_host *host); 491 492 #ifdef CONFIG_REGULATOR 493 int mmc_regulator_get_ocrmask(struct regulator *supply); 494 int mmc_regulator_set_ocr(struct mmc_host *mmc, 495 struct regulator *supply, 496 unsigned short vdd_bit); 497 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios); 498 #else 499 static inline int mmc_regulator_get_ocrmask(struct regulator *supply) 500 { 501 return 0; 502 } 503 504 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc, 505 struct regulator *supply, 506 unsigned short vdd_bit) 507 { 508 return 0; 509 } 510 511 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc, 512 struct mmc_ios *ios) 513 { 514 return -EINVAL; 515 } 516 #endif 517 518 u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max); 519 int mmc_regulator_get_supply(struct mmc_host *mmc); 520 521 static inline int mmc_card_is_removable(struct mmc_host *host) 522 { 523 return !(host->caps & MMC_CAP_NONREMOVABLE); 524 } 525 526 static inline int mmc_card_keep_power(struct mmc_host *host) 527 { 528 return host->pm_flags & MMC_PM_KEEP_POWER; 529 } 530 531 static inline int mmc_card_wake_sdio_irq(struct mmc_host *host) 532 { 533 return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ; 534 } 535 536 /* TODO: Move to private header */ 537 static inline int mmc_card_hs(struct mmc_card *card) 538 { 539 return card->host->ios.timing == MMC_TIMING_SD_HS || 540 card->host->ios.timing == MMC_TIMING_MMC_HS; 541 } 542 543 /* TODO: Move to private header */ 544 static inline int mmc_card_uhs(struct mmc_card *card) 545 { 546 return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 && 547 card->host->ios.timing <= MMC_TIMING_UHS_DDR50; 548 } 549 550 void mmc_retune_timer_stop(struct mmc_host *host); 551 552 static inline void mmc_retune_needed(struct mmc_host *host) 553 { 554 if (host->can_retune) 555 host->need_retune = 1; 556 } 557 558 static inline bool mmc_can_retune(struct mmc_host *host) 559 { 560 return host->can_retune == 1; 561 } 562 563 static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data) 564 { 565 return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE; 566 } 567 568 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error); 569 int mmc_abort_tuning(struct mmc_host *host, u32 opcode); 570 571 #endif /* LINUX_MMC_HOST_H */ 572