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