1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * linux/include/linux/mmc/host.h 4 * 5 * Host driver specific definitions. 6 */ 7 #ifndef LINUX_MMC_HOST_H 8 #define LINUX_MMC_HOST_H 9 10 #include <linux/sched.h> 11 #include <linux/device.h> 12 #include <linux/fault-inject.h> 13 14 #include <linux/mmc/core.h> 15 #include <linux/mmc/card.h> 16 #include <linux/mmc/pm.h> 17 #include <linux/dma-direction.h> 18 19 struct mmc_ios { 20 unsigned int clock; /* clock rate */ 21 unsigned short vdd; 22 unsigned int power_delay_ms; /* waiting for stable power */ 23 24 /* vdd stores the bit number of the selected voltage range from below. */ 25 26 unsigned char bus_mode; /* command output mode */ 27 28 #define MMC_BUSMODE_OPENDRAIN 1 29 #define MMC_BUSMODE_PUSHPULL 2 30 31 unsigned char chip_select; /* SPI chip select */ 32 33 #define MMC_CS_DONTCARE 0 34 #define MMC_CS_HIGH 1 35 #define MMC_CS_LOW 2 36 37 unsigned char power_mode; /* power supply mode */ 38 39 #define MMC_POWER_OFF 0 40 #define MMC_POWER_UP 1 41 #define MMC_POWER_ON 2 42 #define MMC_POWER_UNDEFINED 3 43 44 unsigned char bus_width; /* data bus width */ 45 46 #define MMC_BUS_WIDTH_1 0 47 #define MMC_BUS_WIDTH_4 2 48 #define MMC_BUS_WIDTH_8 3 49 50 unsigned char timing; /* timing specification used */ 51 52 #define MMC_TIMING_LEGACY 0 53 #define MMC_TIMING_MMC_HS 1 54 #define MMC_TIMING_SD_HS 2 55 #define MMC_TIMING_UHS_SDR12 3 56 #define MMC_TIMING_UHS_SDR25 4 57 #define MMC_TIMING_UHS_SDR50 5 58 #define MMC_TIMING_UHS_SDR104 6 59 #define MMC_TIMING_UHS_DDR50 7 60 #define MMC_TIMING_MMC_DDR52 8 61 #define MMC_TIMING_MMC_HS200 9 62 #define MMC_TIMING_MMC_HS400 10 63 64 unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */ 65 66 #define MMC_SIGNAL_VOLTAGE_330 0 67 #define MMC_SIGNAL_VOLTAGE_180 1 68 #define MMC_SIGNAL_VOLTAGE_120 2 69 70 unsigned char drv_type; /* driver type (A, B, C, D) */ 71 72 #define MMC_SET_DRIVER_TYPE_B 0 73 #define MMC_SET_DRIVER_TYPE_A 1 74 #define MMC_SET_DRIVER_TYPE_C 2 75 #define MMC_SET_DRIVER_TYPE_D 3 76 77 bool enhanced_strobe; /* hs400es selection */ 78 }; 79 80 struct mmc_host; 81 82 struct mmc_host_ops { 83 /* 84 * It is optional for the host to implement pre_req and post_req in 85 * order to support double buffering of requests (prepare one 86 * request while another request is active). 87 * pre_req() must always be followed by a post_req(). 88 * To undo a call made to pre_req(), call post_req() with 89 * a nonzero err condition. 90 */ 91 void (*post_req)(struct mmc_host *host, struct mmc_request *req, 92 int err); 93 void (*pre_req)(struct mmc_host *host, struct mmc_request *req); 94 void (*request)(struct mmc_host *host, struct mmc_request *req); 95 /* Submit one request to host in atomic context. */ 96 int (*request_atomic)(struct mmc_host *host, 97 struct mmc_request *req); 98 99 /* 100 * Avoid calling the next three functions too often or in a "fast 101 * path", since underlaying controller might implement them in an 102 * expensive and/or slow way. Also note that these functions might 103 * sleep, so don't call them in the atomic contexts! 104 */ 105 106 /* 107 * Notes to the set_ios callback: 108 * ios->clock might be 0. For some controllers, setting 0Hz 109 * as any other frequency works. However, some controllers 110 * explicitly need to disable the clock. Otherwise e.g. voltage 111 * switching might fail because the SDCLK is not really quiet. 112 */ 113 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); 114 115 /* 116 * Return values for the get_ro callback should be: 117 * 0 for a read/write card 118 * 1 for a read-only card 119 * -ENOSYS when not supported (equal to NULL callback) 120 * or a negative errno value when something bad happened 121 */ 122 int (*get_ro)(struct mmc_host *host); 123 124 /* 125 * Return values for the get_cd callback should be: 126 * 0 for a absent card 127 * 1 for a present card 128 * -ENOSYS when not supported (equal to NULL callback) 129 * or a negative errno value when something bad happened 130 */ 131 int (*get_cd)(struct mmc_host *host); 132 133 void (*enable_sdio_irq)(struct mmc_host *host, int enable); 134 /* Mandatory callback when using MMC_CAP2_SDIO_IRQ_NOTHREAD. */ 135 void (*ack_sdio_irq)(struct mmc_host *host); 136 137 /* optional callback for HC quirks */ 138 void (*init_card)(struct mmc_host *host, struct mmc_card *card); 139 140 int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios); 141 142 /* Check if the card is pulling dat[0:3] low */ 143 int (*card_busy)(struct mmc_host *host); 144 145 /* The tuning command opcode value is different for SD and eMMC cards */ 146 int (*execute_tuning)(struct mmc_host *host, u32 opcode); 147 148 /* Prepare HS400 target operating frequency depending host driver */ 149 int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios); 150 151 /* Prepare switch to DDR during the HS400 init sequence */ 152 int (*hs400_prepare_ddr)(struct mmc_host *host); 153 154 /* Prepare for switching from HS400 to HS200 */ 155 void (*hs400_downgrade)(struct mmc_host *host); 156 157 /* Complete selection of HS400 */ 158 void (*hs400_complete)(struct mmc_host *host); 159 160 /* Prepare enhanced strobe depending host driver */ 161 void (*hs400_enhanced_strobe)(struct mmc_host *host, 162 struct mmc_ios *ios); 163 int (*select_drive_strength)(struct mmc_card *card, 164 unsigned int max_dtr, int host_drv, 165 int card_drv, int *drv_type); 166 void (*hw_reset)(struct mmc_host *host); 167 void (*card_event)(struct mmc_host *host); 168 169 /* 170 * Optional callback to support controllers with HW issues for multiple 171 * I/O. Returns the number of supported blocks for the request. 172 */ 173 int (*multi_io_quirk)(struct mmc_card *card, 174 unsigned int direction, int blk_size); 175 }; 176 177 struct mmc_cqe_ops { 178 /* Allocate resources, and make the CQE operational */ 179 int (*cqe_enable)(struct mmc_host *host, struct mmc_card *card); 180 /* Free resources, and make the CQE non-operational */ 181 void (*cqe_disable)(struct mmc_host *host); 182 /* 183 * Issue a read, write or DCMD request to the CQE. Also deal with the 184 * effect of ->cqe_off(). 185 */ 186 int (*cqe_request)(struct mmc_host *host, struct mmc_request *mrq); 187 /* Free resources (e.g. DMA mapping) associated with the request */ 188 void (*cqe_post_req)(struct mmc_host *host, struct mmc_request *mrq); 189 /* 190 * Prepare the CQE and host controller to accept non-CQ commands. There 191 * is no corresponding ->cqe_on(), instead ->cqe_request() is required 192 * to deal with that. 193 */ 194 void (*cqe_off)(struct mmc_host *host); 195 /* 196 * Wait for all CQE tasks to complete. Return an error if recovery 197 * becomes necessary. 198 */ 199 int (*cqe_wait_for_idle)(struct mmc_host *host); 200 /* 201 * Notify CQE that a request has timed out. Return false if the request 202 * completed or true if a timeout happened in which case indicate if 203 * recovery is needed. 204 */ 205 bool (*cqe_timeout)(struct mmc_host *host, struct mmc_request *mrq, 206 bool *recovery_needed); 207 /* 208 * Stop all CQE activity and prepare the CQE and host controller to 209 * accept recovery commands. 210 */ 211 void (*cqe_recovery_start)(struct mmc_host *host); 212 /* 213 * Clear the queue and call mmc_cqe_request_done() on all requests. 214 * Requests that errored will have the error set on the mmc_request 215 * (data->error or cmd->error for DCMD). Requests that did not error 216 * will have zero data bytes transferred. 217 */ 218 void (*cqe_recovery_finish)(struct mmc_host *host); 219 }; 220 221 struct mmc_async_req { 222 /* active mmc request */ 223 struct mmc_request *mrq; 224 /* 225 * Check error status of completed mmc request. 226 * Returns 0 if success otherwise non zero. 227 */ 228 enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *); 229 }; 230 231 /** 232 * struct mmc_slot - MMC slot functions 233 * 234 * @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL 235 * @handler_priv: MMC/SD-card slot context 236 * 237 * Some MMC/SD host controllers implement slot-functions like card and 238 * write-protect detection natively. However, a large number of controllers 239 * leave these functions to the CPU. This struct provides a hook to attach 240 * such slot-function drivers. 241 */ 242 struct mmc_slot { 243 int cd_irq; 244 bool cd_wake_enabled; 245 void *handler_priv; 246 }; 247 248 /** 249 * mmc_context_info - synchronization details for mmc context 250 * @is_done_rcv wake up reason was done request 251 * @is_new_req wake up reason was new request 252 * @is_waiting_last_req mmc context waiting for single running request 253 * @wait wait queue 254 */ 255 struct mmc_context_info { 256 bool is_done_rcv; 257 bool is_new_req; 258 bool is_waiting_last_req; 259 wait_queue_head_t wait; 260 }; 261 262 struct regulator; 263 struct mmc_pwrseq; 264 265 struct mmc_supply { 266 struct regulator *vmmc; /* Card power supply */ 267 struct regulator *vqmmc; /* Optional Vccq supply */ 268 }; 269 270 struct mmc_ctx { 271 struct task_struct *task; 272 }; 273 274 struct mmc_host { 275 struct device *parent; 276 struct device class_dev; 277 int index; 278 const struct mmc_host_ops *ops; 279 struct mmc_pwrseq *pwrseq; 280 unsigned int f_min; 281 unsigned int f_max; 282 unsigned int f_init; 283 u32 ocr_avail; 284 u32 ocr_avail_sdio; /* SDIO-specific OCR */ 285 u32 ocr_avail_sd; /* SD-specific OCR */ 286 u32 ocr_avail_mmc; /* MMC-specific OCR */ 287 #ifdef CONFIG_PM_SLEEP 288 struct notifier_block pm_notify; 289 #endif 290 u32 max_current_330; 291 u32 max_current_300; 292 u32 max_current_180; 293 294 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ 295 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ 296 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ 297 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ 298 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ 299 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ 300 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ 301 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ 302 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ 303 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ 304 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ 305 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ 306 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ 307 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ 308 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ 309 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ 310 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ 311 312 u32 caps; /* Host capabilities */ 313 314 #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ 315 #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ 316 #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */ 317 #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ 318 #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ 319 #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ 320 #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ 321 #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */ 322 #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */ 323 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */ 324 #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */ 325 #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */ 326 #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */ 327 #define MMC_CAP_DDR (MMC_CAP_3_3V_DDR | MMC_CAP_1_8V_DDR | \ 328 MMC_CAP_1_2V_DDR) 329 #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */ 330 #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */ 331 #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */ 332 #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */ 333 #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */ 334 #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */ 335 #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */ 336 #define MMC_CAP_UHS (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | \ 337 MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \ 338 MMC_CAP_UHS_DDR50) 339 #define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) /* Synced runtime PM suspends. */ 340 #define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */ 341 #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ 342 #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ 343 #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ 344 #define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */ 345 #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */ 346 #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */ 347 #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ 348 #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ 349 350 u32 caps2; /* More host capabilities */ 351 352 #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ 353 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */ 354 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */ 355 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */ 356 #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \ 357 MMC_CAP2_HS200_1_2V_SDR) 358 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */ 359 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */ 360 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */ 361 #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */ 362 #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */ 363 #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \ 364 MMC_CAP2_HS400_1_2V) 365 #define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V) 366 #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V) 367 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17) 368 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */ 369 #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */ 370 #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */ 371 #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */ 372 #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */ 373 #define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */ 374 #define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */ 375 #define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */ 376 #define MMC_CAP2_MERGE_CAPABLE (1 << 26) /* Host can merge a segment over the segment size */ 377 378 int fixed_drv_type; /* fixed driver type for non-removable media */ 379 380 mmc_pm_flag_t pm_caps; /* supported pm features */ 381 382 /* host specific block data */ 383 unsigned int max_seg_size; /* see blk_queue_max_segment_size */ 384 unsigned short max_segs; /* see blk_queue_max_segments */ 385 unsigned short unused; 386 unsigned int max_req_size; /* maximum number of bytes in one req */ 387 unsigned int max_blk_size; /* maximum size of one mmc block */ 388 unsigned int max_blk_count; /* maximum number of blocks in one req */ 389 unsigned int max_busy_timeout; /* max busy timeout in ms */ 390 391 /* private data */ 392 spinlock_t lock; /* lock for claim and bus ops */ 393 394 struct mmc_ios ios; /* current io bus settings */ 395 396 /* group bitfields together to minimize padding */ 397 unsigned int use_spi_crc:1; 398 unsigned int claimed:1; /* host exclusively claimed */ 399 unsigned int bus_dead:1; /* bus has been released */ 400 unsigned int can_retune:1; /* re-tuning can be used */ 401 unsigned int doing_retune:1; /* re-tuning in progress */ 402 unsigned int retune_now:1; /* do re-tuning at next req */ 403 unsigned int retune_paused:1; /* re-tuning is temporarily disabled */ 404 unsigned int use_blk_mq:1; /* use blk-mq */ 405 unsigned int retune_crc_disable:1; /* don't trigger retune upon crc */ 406 unsigned int can_dma_map_merge:1; /* merging can be used */ 407 408 int rescan_disable; /* disable card detection */ 409 int rescan_entered; /* used with nonremovable devices */ 410 411 int need_retune; /* re-tuning is needed */ 412 int hold_retune; /* hold off re-tuning */ 413 unsigned int retune_period; /* re-tuning period in secs */ 414 struct timer_list retune_timer; /* for periodic re-tuning */ 415 416 bool trigger_card_event; /* card_event necessary */ 417 418 struct mmc_card *card; /* device attached to this host */ 419 420 wait_queue_head_t wq; 421 struct mmc_ctx *claimer; /* context that has host claimed */ 422 int claim_cnt; /* "claim" nesting count */ 423 struct mmc_ctx default_ctx; /* default context */ 424 425 struct delayed_work detect; 426 int detect_change; /* card detect flag */ 427 struct mmc_slot slot; 428 429 const struct mmc_bus_ops *bus_ops; /* current bus driver */ 430 unsigned int bus_refs; /* reference counter */ 431 432 unsigned int sdio_irqs; 433 struct task_struct *sdio_irq_thread; 434 struct delayed_work sdio_irq_work; 435 bool sdio_irq_pending; 436 atomic_t sdio_irq_thread_abort; 437 438 mmc_pm_flag_t pm_flags; /* requested pm features */ 439 440 struct led_trigger *led; /* activity led */ 441 442 #ifdef CONFIG_REGULATOR 443 bool regulator_enabled; /* regulator state */ 444 #endif 445 struct mmc_supply supply; 446 447 struct dentry *debugfs_root; 448 449 /* Ongoing data transfer that allows commands during transfer */ 450 struct mmc_request *ongoing_mrq; 451 452 #ifdef CONFIG_FAIL_MMC_REQUEST 453 struct fault_attr fail_mmc_request; 454 #endif 455 456 unsigned int actual_clock; /* Actual HC clock rate */ 457 458 unsigned int slotno; /* used for sdio acpi binding */ 459 460 int dsr_req; /* DSR value is valid */ 461 u32 dsr; /* optional driver stage (DSR) value */ 462 463 /* Command Queue Engine (CQE) support */ 464 const struct mmc_cqe_ops *cqe_ops; 465 void *cqe_private; 466 int cqe_qdepth; 467 bool cqe_enabled; 468 bool cqe_on; 469 470 /* Host Software Queue support */ 471 bool hsq_enabled; 472 473 unsigned long private[] ____cacheline_aligned; 474 }; 475 476 struct device_node; 477 478 struct mmc_host *mmc_alloc_host(int extra, struct device *); 479 int mmc_add_host(struct mmc_host *); 480 void mmc_remove_host(struct mmc_host *); 481 void mmc_free_host(struct mmc_host *); 482 int mmc_of_parse(struct mmc_host *host); 483 int mmc_of_parse_voltage(struct device_node *np, u32 *mask); 484 485 static inline void *mmc_priv(struct mmc_host *host) 486 { 487 return (void *)host->private; 488 } 489 490 static inline struct mmc_host *mmc_from_priv(void *priv) 491 { 492 return container_of(priv, struct mmc_host, private); 493 } 494 495 #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) 496 497 #define mmc_dev(x) ((x)->parent) 498 #define mmc_classdev(x) (&(x)->class_dev) 499 #define mmc_hostname(x) (dev_name(&(x)->class_dev)) 500 501 void mmc_detect_change(struct mmc_host *, unsigned long delay); 502 void mmc_request_done(struct mmc_host *, struct mmc_request *); 503 void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq); 504 505 void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq); 506 507 /* 508 * May be called from host driver's system/runtime suspend/resume callbacks, 509 * to know if SDIO IRQs has been claimed. 510 */ 511 static inline bool sdio_irq_claimed(struct mmc_host *host) 512 { 513 return host->sdio_irqs > 0; 514 } 515 516 static inline void mmc_signal_sdio_irq(struct mmc_host *host) 517 { 518 host->ops->enable_sdio_irq(host, 0); 519 host->sdio_irq_pending = true; 520 if (host->sdio_irq_thread) 521 wake_up_process(host->sdio_irq_thread); 522 } 523 524 void sdio_signal_irq(struct mmc_host *host); 525 526 #ifdef CONFIG_REGULATOR 527 int mmc_regulator_set_ocr(struct mmc_host *mmc, 528 struct regulator *supply, 529 unsigned short vdd_bit); 530 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios); 531 #else 532 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc, 533 struct regulator *supply, 534 unsigned short vdd_bit) 535 { 536 return 0; 537 } 538 539 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc, 540 struct mmc_ios *ios) 541 { 542 return -EINVAL; 543 } 544 #endif 545 546 int mmc_regulator_get_supply(struct mmc_host *mmc); 547 548 static inline int mmc_card_is_removable(struct mmc_host *host) 549 { 550 return !(host->caps & MMC_CAP_NONREMOVABLE); 551 } 552 553 static inline int mmc_card_keep_power(struct mmc_host *host) 554 { 555 return host->pm_flags & MMC_PM_KEEP_POWER; 556 } 557 558 static inline int mmc_card_wake_sdio_irq(struct mmc_host *host) 559 { 560 return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ; 561 } 562 563 /* TODO: Move to private header */ 564 static inline int mmc_card_hs(struct mmc_card *card) 565 { 566 return card->host->ios.timing == MMC_TIMING_SD_HS || 567 card->host->ios.timing == MMC_TIMING_MMC_HS; 568 } 569 570 /* TODO: Move to private header */ 571 static inline int mmc_card_uhs(struct mmc_card *card) 572 { 573 return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 && 574 card->host->ios.timing <= MMC_TIMING_UHS_DDR50; 575 } 576 577 void mmc_retune_timer_stop(struct mmc_host *host); 578 579 static inline void mmc_retune_needed(struct mmc_host *host) 580 { 581 if (host->can_retune) 582 host->need_retune = 1; 583 } 584 585 static inline bool mmc_can_retune(struct mmc_host *host) 586 { 587 return host->can_retune == 1; 588 } 589 590 static inline bool mmc_doing_retune(struct mmc_host *host) 591 { 592 return host->doing_retune == 1; 593 } 594 595 static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data) 596 { 597 return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE; 598 } 599 600 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error); 601 int mmc_abort_tuning(struct mmc_host *host, u32 opcode); 602 603 #endif /* LINUX_MMC_HOST_H */ 604