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, int err);
92 void (*pre_req)(struct mmc_host *host, struct mmc_request *req);
93 void (*request)(struct mmc_host *host, struct mmc_request *req);
94 /* Submit one request to host in atomic context. */
95 int (*request_atomic)(struct mmc_host *host, struct mmc_request *req);
96
97 /*
98 * Avoid calling the next three functions too often or in a "fast
99 * path", since underlaying controller might implement them in an
100 * expensive and/or slow way. Also note that these functions might
101 * sleep, so don't call them in the atomic contexts!
102 */
103
104 /*
105 * Notes to the set_ios callback:
106 * ios->clock might be 0. For some controllers, setting 0Hz
107 * as any other frequency works. However, some controllers
108 * explicitly need to disable the clock. Otherwise e.g. voltage
109 * switching might fail because the SDCLK is not really quiet.
110 */
111 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
112
113 /*
114 * Return values for the get_ro callback should be:
115 * 0 for a read/write card
116 * 1 for a read-only card
117 * -ENOSYS when not supported (equal to NULL callback)
118 * or a negative errno value when something bad happened
119 */
120 int (*get_ro)(struct mmc_host *host);
121
122 /*
123 * Return values for the get_cd callback should be:
124 * 0 for a absent card
125 * 1 for a present card
126 * -ENOSYS when not supported (equal to NULL callback)
127 * or a negative errno value when something bad happened
128 */
129 int (*get_cd)(struct mmc_host *host);
130
131 void (*enable_sdio_irq)(struct mmc_host *host, int enable);
132 /* Mandatory callback when using MMC_CAP2_SDIO_IRQ_NOTHREAD. */
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 int (*set_sdio_status)(struct mmc_host *host, int val);
143
144 /* The tuning command opcode value is different for SD and eMMC cards */
145 int (*execute_tuning)(struct mmc_host *host, u32 opcode);
146
147 /* Prepare HS400 target operating frequency depending host driver */
148 int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
149
150 /* Prepare switch to DDR during the HS400 init sequence */
151 int (*hs400_prepare_ddr)(struct mmc_host *host);
152
153 /* Prepare for switching from HS400 to HS200 */
154 void (*hs400_downgrade)(struct mmc_host *host);
155
156 /* Complete selection of HS400 */
157 void (*hs400_complete)(struct mmc_host *host);
158
159 /* Prepare enhanced strobe depending host driver */
160 void (*hs400_enhanced_strobe)(struct mmc_host *host, struct mmc_ios *ios);
161 int (*select_drive_strength)(struct mmc_card *card, unsigned int max_dtr, int host_drv, int card_drv,
162 int *drv_type);
163 /* Reset the eMMC card via RST_n */
164 void (*hw_reset)(struct mmc_host *host);
165 void (*card_event)(struct mmc_host *host);
166
167 /*
168 * Optional callback to support controllers with HW issues for multiple
169 * I/O. Returns the number of supported blocks for the request.
170 */
171 int (*multi_io_quirk)(struct mmc_card *card, 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, 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 struct wakeup_source *ws; /* Enable consume of uevents */
284 u32 max_current_330;
285 u32 max_current_300;
286 u32 max_current_180;
287
288 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
289 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
290 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
291 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
292 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
293 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
294 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
295 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
296 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
297 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
298 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
299 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
300 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
301 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
302 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
303 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
304 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
305
306 u32 caps; /* Host capabilities */
307
308 #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
309 #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
310 #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
311 #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
312 #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
313 #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
314 #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
315 #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */
316 #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
317 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
318 #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */
319 #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */
320 #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */
321 #define MMC_CAP_DDR (MMC_CAP_3_3V_DDR | MMC_CAP_1_8V_DDR | MMC_CAP_1_2V_DDR)
322 #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */
323 #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */
324 #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */
325 #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */
326 #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */
327 #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */
328 #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */
329 #define MMC_CAP_UHS (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)
330 #define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) /* Synced runtime PM suspends. */
331 #define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */
332 #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
333 #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
334 #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
335 #define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */
336 #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
337 #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
338 #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
339 #define MMC_CAP_HW_RESET (1 << 31) /* Reset the eMMC card via RST_n */
340
341 u32 caps2; /* More host capabilities */
342
343 #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
344 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */
345 #define MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND (1 << 3) /* Can do full power cycle in suspend */
346 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
347 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
348 #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS200_1_2V_SDR)
349 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */
350 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */
351 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */
352 #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */
353 #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */
354 #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_1_2V)
355 #define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V)
356 #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
357 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
358 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
359 #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
360 #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
361 #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
362 #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
363 #define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */
364 #define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */
365 #define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */
366 #define MMC_CAP2_MERGE_CAPABLE (1 << 26) /* Host can merge a segment over the segment size */
367
368 int fixed_drv_type; /* fixed driver type for non-removable media */
369
370 mmc_pm_flag_t pm_caps; /* supported pm features */
371
372 /* host specific block data */
373 unsigned int max_seg_size; /* see blk_queue_max_segment_size */
374 unsigned short max_segs; /* see blk_queue_max_segments */
375 unsigned short unused;
376 unsigned int max_req_size; /* maximum number of bytes in one req */
377 unsigned int max_blk_size; /* maximum size of one mmc block */
378 unsigned int max_blk_count; /* maximum number of blocks in one req */
379 unsigned int max_busy_timeout; /* max busy timeout in ms */
380
381 /* private data */
382 spinlock_t lock; /* lock for claim and bus ops */
383
384 struct mmc_ios ios; /* current io bus settings */
385
386 /* group bitfields together to minimize padding */
387 unsigned int use_spi_crc : 1;
388 unsigned int claimed : 1; /* host exclusively claimed */
389 unsigned int bus_dead : 1; /* bus has been released */
390 unsigned int doing_init_tune : 1; /* initial tuning in progress */
391 unsigned int can_retune : 1; /* re-tuning can be used */
392 unsigned int doing_retune : 1; /* re-tuning in progress */
393 unsigned int retune_now : 1; /* do re-tuning at next req */
394 unsigned int retune_paused : 1; /* re-tuning is temporarily disabled */
395 unsigned int use_blk_mq : 1; /* use blk-mq */
396 unsigned int retune_crc_disable : 1; /* don't trigger retune upon crc */
397 unsigned int can_dma_map_merge : 1; /* merging can be used */
398
399 int rescan_disable; /* disable card detection */
400 int rescan_entered; /* used with nonremovable devices */
401
402 int need_retune; /* re-tuning is needed */
403 int hold_retune; /* hold off re-tuning */
404 unsigned int retune_period; /* re-tuning period in secs */
405 struct timer_list retune_timer; /* for periodic re-tuning */
406
407 bool trigger_card_event; /* card_event necessary */
408
409 struct mmc_card *card; /* device attached to this host */
410
411 wait_queue_head_t wq;
412 struct mmc_ctx *claimer; /* context that has host claimed */
413 int claim_cnt; /* "claim" nesting count */
414 struct mmc_ctx default_ctx; /* default context */
415
416 struct delayed_work detect;
417 int detect_change; /* card detect flag */
418 struct mmc_slot slot;
419
420 const struct mmc_bus_ops *bus_ops; /* current bus driver */
421 unsigned int bus_refs; /* reference counter */
422
423 unsigned int sdio_irqs;
424 struct task_struct *sdio_irq_thread;
425 struct delayed_work sdio_irq_work;
426 bool sdio_irq_pending;
427 atomic_t sdio_irq_thread_abort;
428
429 mmc_pm_flag_t pm_flags; /* requested pm features */
430
431 struct led_trigger *led; /* activity led */
432
433 #ifdef CONFIG_REGULATOR
434 bool regulator_enabled; /* regulator state */
435 #endif
436 struct mmc_supply supply;
437
438 struct dentry *debugfs_root;
439
440 /* Ongoing data transfer that allows commands during transfer */
441 struct mmc_request *ongoing_mrq;
442
443 #ifdef CONFIG_FAIL_MMC_REQUEST
444 struct fault_attr fail_mmc_request;
445 #endif
446
447 unsigned int actual_clock; /* Actual HC clock rate */
448
449 unsigned int slotno; /* used for sdio acpi binding */
450
451 int dsr_req; /* DSR value is valid */
452 u32 dsr; /* optional driver stage (DSR) value */
453
454 /* Command Queue Engine (CQE) support */
455 const struct mmc_cqe_ops *cqe_ops;
456 void *cqe_private;
457 int cqe_qdepth;
458 bool cqe_enabled;
459 bool cqe_on;
460
461 /* Host Software Queue support */
462 bool hsq_enabled;
463
464 unsigned long private[] ____cacheline_aligned;
465 };
466
467 struct device_node;
468
469 struct mmc_host *mmc_alloc_host(int extra, struct device *);
470 int mmc_add_host(struct mmc_host *);
471 void mmc_remove_host(struct mmc_host *);
472 void mmc_free_host(struct mmc_host *);
473 int mmc_of_parse(struct mmc_host *host);
474 int mmc_of_parse_voltage(struct device_node *np, u32 *mask);
475
476 extern struct mmc_host *primary_sdio_host;
477 int mmc_host_rescan(struct mmc_host *host, int val, int is_cap_sdio_irq);
478
mmc_priv(struct mmc_host * host)479 static inline void *mmc_priv(struct mmc_host *host)
480 {
481 return (void *)host->private;
482 }
483
mmc_from_priv(void * priv)484 static inline struct mmc_host *mmc_from_priv(void *priv)
485 {
486 return container_of(priv, struct mmc_host, private);
487 }
488
489 #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
490
491 #define mmc_dev(x) ((x)->parent)
492 #define mmc_classdev(x) (&(x)->class_dev)
493 #define mmc_hostname(x) (dev_name(&(x)->class_dev))
494
495 void mmc_detect_change(struct mmc_host *, unsigned long delay);
496 void mmc_request_done(struct mmc_host *, struct mmc_request *);
497 void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq);
498
499 void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq);
500
501 /*
502 * May be called from host driver's system/runtime suspend/resume callbacks,
503 * to know if SDIO IRQs has been claimed.
504 */
sdio_irq_claimed(struct mmc_host * host)505 static inline bool sdio_irq_claimed(struct mmc_host *host)
506 {
507 return host->sdio_irqs > 0;
508 }
509
mmc_signal_sdio_irq(struct mmc_host * host)510 static inline void mmc_signal_sdio_irq(struct mmc_host *host)
511 {
512 host->ops->enable_sdio_irq(host, 0);
513 host->sdio_irq_pending = true;
514 if (host->sdio_irq_thread) {
515 wake_up_process(host->sdio_irq_thread);
516 }
517 }
518
519 void sdio_signal_irq(struct mmc_host *host);
520
521 #ifdef CONFIG_REGULATOR
522 int mmc_regulator_set_ocr(struct mmc_host *mmc, struct regulator *supply, unsigned short vdd_bit);
523 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
524 #else
mmc_regulator_set_ocr(struct mmc_host * mmc,struct regulator * supply,unsigned short vdd_bit)525 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc, struct regulator *supply, unsigned short vdd_bit)
526 {
527 return 0;
528 }
529
mmc_regulator_set_vqmmc(struct mmc_host * mmc,struct mmc_ios * ios)530 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios)
531 {
532 return -EINVAL;
533 }
534 #endif
535
536 int mmc_regulator_get_supply(struct mmc_host *mmc);
537
mmc_card_is_removable(struct mmc_host * host)538 static inline int mmc_card_is_removable(struct mmc_host *host)
539 {
540 return !(host->caps & MMC_CAP_NONREMOVABLE);
541 }
542
mmc_card_keep_power(struct mmc_host * host)543 static inline int mmc_card_keep_power(struct mmc_host *host)
544 {
545 return host->pm_flags & MMC_PM_KEEP_POWER;
546 }
547
mmc_card_wake_sdio_irq(struct mmc_host * host)548 static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
549 {
550 return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
551 }
552
553 /* Move to private header */
mmc_card_hs(struct mmc_card * card)554 static inline int mmc_card_hs(struct mmc_card *card)
555 {
556 return card->host->ios.timing == MMC_TIMING_SD_HS || card->host->ios.timing == MMC_TIMING_MMC_HS;
557 }
558
559 /* Move to private header */
mmc_card_uhs(struct mmc_card * card)560 static inline int mmc_card_uhs(struct mmc_card *card)
561 {
562 return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 && card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
563 }
564
565 void mmc_retune_timer_stop(struct mmc_host *host);
566
mmc_retune_needed(struct mmc_host * host)567 static inline void mmc_retune_needed(struct mmc_host *host)
568 {
569 if (host->can_retune) {
570 host->need_retune = 1;
571 }
572 }
573
mmc_can_retune(struct mmc_host * host)574 static inline bool mmc_can_retune(struct mmc_host *host)
575 {
576 return host->can_retune == 1;
577 }
578
mmc_doing_retune(struct mmc_host * host)579 static inline bool mmc_doing_retune(struct mmc_host *host)
580 {
581 return host->doing_retune == 1;
582 }
583
mmc_doing_tune(struct mmc_host * host)584 static inline bool mmc_doing_tune(struct mmc_host *host)
585 {
586 return host->doing_retune == 1 || host->doing_init_tune == 1;
587 }
588
mmc_get_dma_dir(struct mmc_data * data)589 static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
590 {
591 return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
592 }
593
594 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
595 int mmc_abort_tuning(struct mmc_host *host, u32 opcode);
596
597 #endif /* LINUX_MMC_HOST_H */
598