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TOMOYO Linux Cross Reference
Linux/include/linux/mmc/host.h

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

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