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 #include <linux/blk-crypto-profile.h>
19
20 struct mmc_ios {
21 unsigned int clock; /* clock rate */
22 unsigned short vdd;
23 unsigned int power_delay_ms; /* waiting for stable power */
24
25 /* vdd stores the bit number of the selected voltage range from below. */
26
27 unsigned char bus_mode; /* command output mode */
28
29 #define MMC_BUSMODE_OPENDRAIN 1
30 #define MMC_BUSMODE_PUSHPULL 2
31
32 unsigned char chip_select; /* SPI chip select */
33
34 #define MMC_CS_DONTCARE 0
35 #define MMC_CS_HIGH 1
36 #define MMC_CS_LOW 2
37
38 unsigned char power_mode; /* power supply mode */
39
40 #define MMC_POWER_OFF 0
41 #define MMC_POWER_UP 1
42 #define MMC_POWER_ON 2
43 #define MMC_POWER_UNDEFINED 3
44
45 unsigned char bus_width; /* data bus width */
46
47 #define MMC_BUS_WIDTH_1 0
48 #define MMC_BUS_WIDTH_4 2
49 #define MMC_BUS_WIDTH_8 3
50
51 unsigned char timing; /* timing specification used */
52
53 #define MMC_TIMING_LEGACY 0
54 #define MMC_TIMING_MMC_HS 1
55 #define MMC_TIMING_SD_HS 2
56 #define MMC_TIMING_UHS_SDR12 3
57 #define MMC_TIMING_UHS_SDR25 4
58 #define MMC_TIMING_UHS_SDR50 5
59 #define MMC_TIMING_UHS_SDR104 6
60 #define MMC_TIMING_UHS_DDR50 7
61 #define MMC_TIMING_MMC_DDR52 8
62 #define MMC_TIMING_MMC_HS200 9
63 #define MMC_TIMING_MMC_HS400 10
64 #define MMC_TIMING_SD_EXP 11
65 #define MMC_TIMING_SD_EXP_1_2V 12
66
67 unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
68
69 #define MMC_SIGNAL_VOLTAGE_330 0
70 #define MMC_SIGNAL_VOLTAGE_180 1
71 #define MMC_SIGNAL_VOLTAGE_120 2
72
73 unsigned char drv_type; /* driver type (A, B, C, D) */
74
75 #define MMC_SET_DRIVER_TYPE_B 0
76 #define MMC_SET_DRIVER_TYPE_A 1
77 #define MMC_SET_DRIVER_TYPE_C 2
78 #define MMC_SET_DRIVER_TYPE_D 3
79
80 bool enhanced_strobe; /* hs400es selection */
81 };
82
83 struct mmc_clk_phase {
84 bool valid;
85 u16 in_deg;
86 u16 out_deg;
87 };
88
89 #define MMC_NUM_CLK_PHASES (MMC_TIMING_MMC_HS400 + 1)
90 struct mmc_clk_phase_map {
91 struct mmc_clk_phase phase[MMC_NUM_CLK_PHASES];
92 };
93
94 struct mmc_host;
95
96 struct mmc_host_ops {
97 /*
98 * It is optional for the host to implement pre_req and post_req in
99 * order to support double buffering of requests (prepare one
100 * request while another request is active).
101 * pre_req() must always be followed by a post_req().
102 * To undo a call made to pre_req(), call post_req() with
103 * a nonzero err condition.
104 */
105 void (*post_req)(struct mmc_host *host, struct mmc_request *req,
106 int err);
107 void (*pre_req)(struct mmc_host *host, struct mmc_request *req);
108 void (*request)(struct mmc_host *host, struct mmc_request *req);
109 /* Submit one request to host in atomic context. */
110 int (*request_atomic)(struct mmc_host *host,
111 struct mmc_request *req);
112
113 /*
114 * Avoid calling the next three functions too often or in a "fast
115 * path", since underlaying controller might implement them in an
116 * expensive and/or slow way. Also note that these functions might
117 * sleep, so don't call them in the atomic contexts!
118 */
119
120 /*
121 * Notes to the set_ios callback:
122 * ios->clock might be 0. For some controllers, setting 0Hz
123 * as any other frequency works. However, some controllers
124 * explicitly need to disable the clock. Otherwise e.g. voltage
125 * switching might fail because the SDCLK is not really quiet.
126 */
127 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
128
129 /*
130 * Return values for the get_ro callback should be:
131 * 0 for a read/write card
132 * 1 for a read-only card
133 * -ENOSYS when not supported (equal to NULL callback)
134 * or a negative errno value when something bad happened
135 */
136 int (*get_ro)(struct mmc_host *host);
137
138 /*
139 * Return values for the get_cd callback should be:
140 * 0 for a absent card
141 * 1 for a present card
142 * -ENOSYS when not supported (equal to NULL callback)
143 * or a negative errno value when something bad happened
144 */
145 int (*get_cd)(struct mmc_host *host);
146
147 void (*enable_sdio_irq)(struct mmc_host *host, int enable);
148 /* Mandatory callback when using MMC_CAP2_SDIO_IRQ_NOTHREAD. */
149 void (*ack_sdio_irq)(struct mmc_host *host);
150
151 /* optional callback for HC quirks */
152 void (*init_card)(struct mmc_host *host, struct mmc_card *card);
153
154 int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
155
156 /* Check if the card is pulling dat[0] low */
157 int (*card_busy)(struct mmc_host *host);
158
159 /* The tuning command opcode value is different for SD and eMMC cards */
160 int (*execute_tuning)(struct mmc_host *host, u32 opcode);
161
162 /* Prepare HS400 target operating frequency depending host driver */
163 int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
164
165 /* Execute HS400 tuning depending host driver */
166 int (*execute_hs400_tuning)(struct mmc_host *host, struct mmc_card *card);
167
168 /* Prepare switch to DDR during the HS400 init sequence */
169 int (*hs400_prepare_ddr)(struct mmc_host *host);
170
171 /* Prepare for switching from HS400 to HS200 */
172 void (*hs400_downgrade)(struct mmc_host *host);
173
174 /* Complete selection of HS400 */
175 void (*hs400_complete)(struct mmc_host *host);
176
177 /* Prepare enhanced strobe depending host driver */
178 void (*hs400_enhanced_strobe)(struct mmc_host *host,
179 struct mmc_ios *ios);
180 int (*select_drive_strength)(struct mmc_card *card,
181 unsigned int max_dtr, int host_drv,
182 int card_drv, int *drv_type);
183 /* Reset the eMMC card via RST_n */
184 void (*hw_reset)(struct mmc_host *host);
185 void (*card_event)(struct mmc_host *host);
186
187 /*
188 * Optional callback to support controllers with HW issues for multiple
189 * I/O. Returns the number of supported blocks for the request.
190 */
191 int (*multi_io_quirk)(struct mmc_card *card,
192 unsigned int direction, int blk_size);
193
194 /* Initialize an SD express card, mandatory for MMC_CAP2_SD_EXP. */
195 int (*init_sd_express)(struct mmc_host *host, struct mmc_ios *ios);
196 };
197
198 struct mmc_cqe_ops {
199 /* Allocate resources, and make the CQE operational */
200 int (*cqe_enable)(struct mmc_host *host, struct mmc_card *card);
201 /* Free resources, and make the CQE non-operational */
202 void (*cqe_disable)(struct mmc_host *host);
203 /*
204 * Issue a read, write or DCMD request to the CQE. Also deal with the
205 * effect of ->cqe_off().
206 */
207 int (*cqe_request)(struct mmc_host *host, struct mmc_request *mrq);
208 /* Free resources (e.g. DMA mapping) associated with the request */
209 void (*cqe_post_req)(struct mmc_host *host, struct mmc_request *mrq);
210 /*
211 * Prepare the CQE and host controller to accept non-CQ commands. There
212 * is no corresponding ->cqe_on(), instead ->cqe_request() is required
213 * to deal with that.
214 */
215 void (*cqe_off)(struct mmc_host *host);
216 /*
217 * Wait for all CQE tasks to complete. Return an error if recovery
218 * becomes necessary.
219 */
220 int (*cqe_wait_for_idle)(struct mmc_host *host);
221 /*
222 * Notify CQE that a request has timed out. Return false if the request
223 * completed or true if a timeout happened in which case indicate if
224 * recovery is needed.
225 */
226 bool (*cqe_timeout)(struct mmc_host *host, struct mmc_request *mrq,
227 bool *recovery_needed);
228 /*
229 * Stop all CQE activity and prepare the CQE and host controller to
230 * accept recovery commands.
231 */
232 void (*cqe_recovery_start)(struct mmc_host *host);
233 /*
234 * Clear the queue and call mmc_cqe_request_done() on all requests.
235 * Requests that errored will have the error set on the mmc_request
236 * (data->error or cmd->error for DCMD). Requests that did not error
237 * will have zero data bytes transferred.
238 */
239 void (*cqe_recovery_finish)(struct mmc_host *host);
240 };
241
242 struct mmc_async_req {
243 /* active mmc request */
244 struct mmc_request *mrq;
245 /*
246 * Check error status of completed mmc request.
247 * Returns 0 if success otherwise non zero.
248 */
249 enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *);
250 };
251
252 /**
253 * struct mmc_slot - MMC slot functions
254 *
255 * @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL
256 * @handler_priv: MMC/SD-card slot context
257 *
258 * Some MMC/SD host controllers implement slot-functions like card and
259 * write-protect detection natively. However, a large number of controllers
260 * leave these functions to the CPU. This struct provides a hook to attach
261 * such slot-function drivers.
262 */
263 struct mmc_slot {
264 int cd_irq;
265 bool cd_wake_enabled;
266 void *handler_priv;
267 };
268
269 /**
270 * mmc_context_info - synchronization details for mmc context
271 * @is_done_rcv wake up reason was done request
272 * @is_new_req wake up reason was new request
273 * @is_waiting_last_req mmc context waiting for single running request
274 * @wait wait queue
275 */
276 struct mmc_context_info {
277 bool is_done_rcv;
278 bool is_new_req;
279 bool is_waiting_last_req;
280 wait_queue_head_t wait;
281 };
282
283 struct regulator;
284 struct mmc_pwrseq;
285
286 struct mmc_supply {
287 struct regulator *vmmc; /* Card power supply */
288 struct regulator *vqmmc; /* Optional Vccq supply */
289 };
290
291 struct mmc_ctx {
292 struct task_struct *task;
293 };
294
295 struct mmc_host {
296 struct device *parent;
297 struct device class_dev;
298 int index;
299 const struct mmc_host_ops *ops;
300 struct mmc_pwrseq *pwrseq;
301 unsigned int f_min;
302 unsigned int f_max;
303 unsigned int f_init;
304 u32 ocr_avail;
305 u32 ocr_avail_sdio; /* SDIO-specific OCR */
306 u32 ocr_avail_sd; /* SD-specific OCR */
307 u32 ocr_avail_mmc; /* MMC-specific OCR */
308 struct wakeup_source *ws; /* Enable consume of uevents */
309 u32 max_current_330;
310 u32 max_current_300;
311 u32 max_current_180;
312
313 #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
314 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
315 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
316 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
317 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
318 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
319 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
320 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
321 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
322 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
323 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
324 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
325 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
326 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
327 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
328 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
329 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
330
331 u32 caps; /* Host capabilities */
332
333 #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
334 #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
335 #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
336 #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
337 #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
338 #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
339 #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
340 #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */
341 #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
342 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
343 #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */
344 #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */
345 #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */
346 #define MMC_CAP_DDR (MMC_CAP_3_3V_DDR | MMC_CAP_1_8V_DDR | \
347 MMC_CAP_1_2V_DDR)
348 #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */
349 #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */
350 #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */
351 #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */
352 #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */
353 #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */
354 #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */
355 #define MMC_CAP_UHS (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | \
356 MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \
357 MMC_CAP_UHS_DDR50)
358 #define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) /* Synced runtime PM suspends. */
359 #define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */
360 #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
361 #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
362 #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
363 #define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */
364 #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
365 #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
366 #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
367 #define MMC_CAP_HW_RESET (1 << 31) /* Reset the eMMC card via RST_n */
368
369 u32 caps2; /* More host capabilities */
370
371 #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
372 #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */
373 #define MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND (1 << 3) /* Can do full power cycle in suspend */
374 #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
375 #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
376 #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
377 MMC_CAP2_HS200_1_2V_SDR)
378 #define MMC_CAP2_SD_EXP (1 << 7) /* SD express via PCIe */
379 #define MMC_CAP2_SD_EXP_1_2V (1 << 8) /* SD express 1.2V */
380 #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */
381 #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */
382 #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */
383 #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */
384 #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */
385 #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \
386 MMC_CAP2_HS400_1_2V)
387 #define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V)
388 #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
389 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
390 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
391 #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
392 #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
393 #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
394 #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
395 #define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */
396 #define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */
397 #define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */
398 #define MMC_CAP2_MERGE_CAPABLE (1 << 26) /* Host can merge a segment over the segment size */
399 #ifdef CONFIG_MMC_CRYPTO
400 #define MMC_CAP2_CRYPTO (1 << 27) /* Host supports inline encryption */
401 #else
402 #define MMC_CAP2_CRYPTO 0
403 #endif
404 #define MMC_CAP2_ALT_GPT_TEGRA (1 << 28) /* Host with eMMC that has GPT entry at a non-standard location */
405
406 int fixed_drv_type; /* fixed driver type for non-removable media */
407
408 mmc_pm_flag_t pm_caps; /* supported pm features */
409
410 /* host specific block data */
411 unsigned int max_seg_size; /* see blk_queue_max_segment_size */
412 unsigned short max_segs; /* see blk_queue_max_segments */
413 unsigned short unused;
414 unsigned int max_req_size; /* maximum number of bytes in one req */
415 unsigned int max_blk_size; /* maximum size of one mmc block */
416 unsigned int max_blk_count; /* maximum number of blocks in one req */
417 unsigned int max_busy_timeout; /* max busy timeout in ms */
418
419 /* private data */
420 spinlock_t lock; /* lock for claim and bus ops */
421
422 struct mmc_ios ios; /* current io bus settings */
423
424 /* group bitfields together to minimize padding */
425 unsigned int use_spi_crc:1;
426 unsigned int claimed:1; /* host exclusively claimed */
427 unsigned int doing_init_tune:1; /* initial tuning in progress */
428 unsigned int can_retune:1; /* re-tuning can be used */
429 unsigned int doing_retune:1; /* re-tuning in progress */
430 unsigned int retune_now:1; /* do re-tuning at next req */
431 unsigned int retune_paused:1; /* re-tuning is temporarily disabled */
432 unsigned int retune_crc_disable:1; /* don't trigger retune upon crc */
433 unsigned int can_dma_map_merge:1; /* merging can be used */
434
435 int rescan_disable; /* disable card detection */
436 int rescan_entered; /* used with nonremovable devices */
437
438 int need_retune; /* re-tuning is needed */
439 int hold_retune; /* hold off re-tuning */
440 unsigned int retune_period; /* re-tuning period in secs */
441 struct timer_list retune_timer; /* for periodic re-tuning */
442
443 bool trigger_card_event; /* card_event necessary */
444
445 struct mmc_card *card; /* device attached to this host */
446
447 wait_queue_head_t wq;
448 struct mmc_ctx *claimer; /* context that has host claimed */
449 int claim_cnt; /* "claim" nesting count */
450 struct mmc_ctx default_ctx; /* default context */
451
452 struct delayed_work detect;
453 int detect_change; /* card detect flag */
454 struct mmc_slot slot;
455
456 const struct mmc_bus_ops *bus_ops; /* current bus driver */
457
458 unsigned int sdio_irqs;
459 struct task_struct *sdio_irq_thread;
460 struct delayed_work sdio_irq_work;
461 bool sdio_irq_pending;
462 atomic_t sdio_irq_thread_abort;
463
464 mmc_pm_flag_t pm_flags; /* requested pm features */
465
466 struct led_trigger *led; /* activity led */
467
468 #ifdef CONFIG_REGULATOR
469 bool regulator_enabled; /* regulator state */
470 #endif
471 struct mmc_supply supply;
472
473 struct dentry *debugfs_root;
474
475 /* Ongoing data transfer that allows commands during transfer */
476 struct mmc_request *ongoing_mrq;
477
478 #ifdef CONFIG_FAIL_MMC_REQUEST
479 struct fault_attr fail_mmc_request;
480 #endif
481
482 unsigned int actual_clock; /* Actual HC clock rate */
483
484 unsigned int slotno; /* used for sdio acpi binding */
485
486 int dsr_req; /* DSR value is valid */
487 u32 dsr; /* optional driver stage (DSR) value */
488
489 /* Command Queue Engine (CQE) support */
490 const struct mmc_cqe_ops *cqe_ops;
491 void *cqe_private;
492 int cqe_qdepth;
493 bool cqe_enabled;
494 bool cqe_on;
495
496 /* Inline encryption support */
497 #ifdef CONFIG_MMC_CRYPTO
498 struct blk_crypto_profile crypto_profile;
499 #endif
500
501 /* Host Software Queue support */
502 bool hsq_enabled;
503
504 unsigned long private[] ____cacheline_aligned;
505 };
506
507 struct device_node;
508
509 struct mmc_host *mmc_alloc_host(int extra, struct device *);
510 int mmc_add_host(struct mmc_host *);
511 void mmc_remove_host(struct mmc_host *);
512 void mmc_free_host(struct mmc_host *);
513 void mmc_of_parse_clk_phase(struct mmc_host *host,
514 struct mmc_clk_phase_map *map);
515 int mmc_of_parse(struct mmc_host *host);
516 int mmc_of_parse_voltage(struct mmc_host *host, u32 *mask);
517
mmc_priv(struct mmc_host * host)518 static inline void *mmc_priv(struct mmc_host *host)
519 {
520 return (void *)host->private;
521 }
522
mmc_from_priv(void * priv)523 static inline struct mmc_host *mmc_from_priv(void *priv)
524 {
525 return container_of(priv, struct mmc_host, private);
526 }
527
528 #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
529
530 #define mmc_dev(x) ((x)->parent)
531 #define mmc_classdev(x) (&(x)->class_dev)
532 #define mmc_hostname(x) (dev_name(&(x)->class_dev))
533
534 void mmc_detect_change(struct mmc_host *, unsigned long delay);
535 void mmc_request_done(struct mmc_host *, struct mmc_request *);
536 void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq);
537
538 void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq);
539
540 /*
541 * May be called from host driver's system/runtime suspend/resume callbacks,
542 * to know if SDIO IRQs has been claimed.
543 */
sdio_irq_claimed(struct mmc_host * host)544 static inline bool sdio_irq_claimed(struct mmc_host *host)
545 {
546 return host->sdio_irqs > 0;
547 }
548
mmc_signal_sdio_irq(struct mmc_host * host)549 static inline void mmc_signal_sdio_irq(struct mmc_host *host)
550 {
551 host->ops->enable_sdio_irq(host, 0);
552 host->sdio_irq_pending = true;
553 if (host->sdio_irq_thread)
554 wake_up_process(host->sdio_irq_thread);
555 }
556
557 void sdio_signal_irq(struct mmc_host *host);
558
559 #ifdef CONFIG_REGULATOR
560 int mmc_regulator_set_ocr(struct mmc_host *mmc,
561 struct regulator *supply,
562 unsigned short vdd_bit);
563 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
564 #else
mmc_regulator_set_ocr(struct mmc_host * mmc,struct regulator * supply,unsigned short vdd_bit)565 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
566 struct regulator *supply,
567 unsigned short vdd_bit)
568 {
569 return 0;
570 }
571
mmc_regulator_set_vqmmc(struct mmc_host * mmc,struct mmc_ios * ios)572 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,
573 struct mmc_ios *ios)
574 {
575 return -EINVAL;
576 }
577 #endif
578
579 int mmc_regulator_get_supply(struct mmc_host *mmc);
580
mmc_card_is_removable(struct mmc_host * host)581 static inline int mmc_card_is_removable(struct mmc_host *host)
582 {
583 return !(host->caps & MMC_CAP_NONREMOVABLE);
584 }
585
mmc_card_keep_power(struct mmc_host * host)586 static inline int mmc_card_keep_power(struct mmc_host *host)
587 {
588 return host->pm_flags & MMC_PM_KEEP_POWER;
589 }
590
mmc_card_wake_sdio_irq(struct mmc_host * host)591 static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
592 {
593 return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
594 }
595
596 /* TODO: Move to private header */
mmc_card_hs(struct mmc_card * card)597 static inline int mmc_card_hs(struct mmc_card *card)
598 {
599 return card->host->ios.timing == MMC_TIMING_SD_HS ||
600 card->host->ios.timing == MMC_TIMING_MMC_HS;
601 }
602
603 /* TODO: Move to private header */
mmc_card_uhs(struct mmc_card * card)604 static inline int mmc_card_uhs(struct mmc_card *card)
605 {
606 return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 &&
607 card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
608 }
609
610 void mmc_retune_timer_stop(struct mmc_host *host);
611
mmc_retune_needed(struct mmc_host * host)612 static inline void mmc_retune_needed(struct mmc_host *host)
613 {
614 if (host->can_retune)
615 host->need_retune = 1;
616 }
617
mmc_can_retune(struct mmc_host * host)618 static inline bool mmc_can_retune(struct mmc_host *host)
619 {
620 return host->can_retune == 1;
621 }
622
mmc_doing_retune(struct mmc_host * host)623 static inline bool mmc_doing_retune(struct mmc_host *host)
624 {
625 return host->doing_retune == 1;
626 }
627
mmc_doing_tune(struct mmc_host * host)628 static inline bool mmc_doing_tune(struct mmc_host *host)
629 {
630 return host->doing_retune == 1 || host->doing_init_tune == 1;
631 }
632
mmc_get_dma_dir(struct mmc_data * data)633 static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
634 {
635 return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
636 }
637
638 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
639 int mmc_send_abort_tuning(struct mmc_host *host, u32 opcode);
640 int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd);
641
642 #endif /* LINUX_MMC_HOST_H */
643