Commit | Line | Data |
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5c4e6f13 PO |
1 | /* |
2 | * linux/drivers/mmc/sdio.c | |
3 | * | |
4 | * Copyright 2006-2007 Pierre Ossman | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/err.h> | |
81968561 | 13 | #include <linux/pm_runtime.h> |
5c4e6f13 PO |
14 | |
15 | #include <linux/mmc/host.h> | |
16 | #include <linux/mmc/card.h> | |
a4924c71 | 17 | #include <linux/mmc/mmc.h> |
35c66c19 | 18 | #include <linux/mmc/sdio.h> |
e29a7d73 | 19 | #include <linux/mmc/sdio_func.h> |
eab40687 | 20 | #include <linux/mmc/sdio_ids.h> |
5c4e6f13 PO |
21 | |
22 | #include "core.h" | |
23 | #include "bus.h" | |
71578a1e | 24 | #include "sd.h" |
e29a7d73 | 25 | #include "sdio_bus.h" |
5c4e6f13 PO |
26 | #include "mmc_ops.h" |
27 | #include "sd_ops.h" | |
28 | #include "sdio_ops.h" | |
b7261261 | 29 | #include "sdio_cis.h" |
5c4e6f13 | 30 | |
0597007f PO |
31 | static int sdio_read_fbr(struct sdio_func *func) |
32 | { | |
33 | int ret; | |
34 | unsigned char data; | |
35 | ||
eab40687 OBC |
36 | if (mmc_card_nonstd_func_interface(func->card)) { |
37 | func->class = SDIO_CLASS_NONE; | |
38 | return 0; | |
39 | } | |
40 | ||
0597007f | 41 | ret = mmc_io_rw_direct(func->card, 0, 0, |
7616ee95 | 42 | SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data); |
0597007f PO |
43 | if (ret) |
44 | goto out; | |
45 | ||
46 | data &= 0x0f; | |
47 | ||
48 | if (data == 0x0f) { | |
49 | ret = mmc_io_rw_direct(func->card, 0, 0, | |
7616ee95 | 50 | SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data); |
0597007f PO |
51 | if (ret) |
52 | goto out; | |
53 | } | |
54 | ||
55 | func->class = data; | |
56 | ||
57 | out: | |
58 | return ret; | |
59 | } | |
60 | ||
e29a7d73 PO |
61 | static int sdio_init_func(struct mmc_card *card, unsigned int fn) |
62 | { | |
0597007f | 63 | int ret; |
e29a7d73 PO |
64 | struct sdio_func *func; |
65 | ||
66 | BUG_ON(fn > SDIO_MAX_FUNCS); | |
67 | ||
68 | func = sdio_alloc_func(card); | |
69 | if (IS_ERR(func)) | |
70 | return PTR_ERR(func); | |
71 | ||
72 | func->num = fn; | |
73 | ||
6f51be3d GI |
74 | if (!(card->quirks & MMC_QUIRK_NONSTD_SDIO)) { |
75 | ret = sdio_read_fbr(func); | |
76 | if (ret) | |
77 | goto fail; | |
0597007f | 78 | |
6f51be3d GI |
79 | ret = sdio_read_func_cis(func); |
80 | if (ret) | |
81 | goto fail; | |
82 | } else { | |
83 | func->vendor = func->card->cis.vendor; | |
84 | func->device = func->card->cis.device; | |
85 | func->max_blksize = func->card->cis.blksize; | |
86 | } | |
b7261261 | 87 | |
e29a7d73 PO |
88 | card->sdio_func[fn - 1] = func; |
89 | ||
90 | return 0; | |
0597007f PO |
91 | |
92 | fail: | |
93 | /* | |
94 | * It is okay to remove the function here even though we hold | |
95 | * the host lock as we haven't registered the device yet. | |
96 | */ | |
97 | sdio_remove_func(func); | |
98 | return ret; | |
e29a7d73 PO |
99 | } |
100 | ||
35c66c19 PO |
101 | static int sdio_read_cccr(struct mmc_card *card) |
102 | { | |
103 | int ret; | |
104 | int cccr_vsn; | |
105 | unsigned char data; | |
a303c531 | 106 | unsigned char speed; |
35c66c19 PO |
107 | |
108 | memset(&card->cccr, 0, sizeof(struct sdio_cccr)); | |
109 | ||
110 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CCCR, 0, &data); | |
111 | if (ret) | |
112 | goto out; | |
113 | ||
114 | cccr_vsn = data & 0x0f; | |
115 | ||
b4625dab | 116 | if (cccr_vsn > SDIO_CCCR_REV_3_00) { |
a3c76eb9 | 117 | pr_err("%s: unrecognised CCCR structure version %d\n", |
35c66c19 PO |
118 | mmc_hostname(card->host), cccr_vsn); |
119 | return -EINVAL; | |
120 | } | |
121 | ||
122 | card->cccr.sdio_vsn = (data & 0xf0) >> 4; | |
123 | ||
124 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CAPS, 0, &data); | |
125 | if (ret) | |
126 | goto out; | |
127 | ||
128 | if (data & SDIO_CCCR_CAP_SMB) | |
129 | card->cccr.multi_block = 1; | |
130 | if (data & SDIO_CCCR_CAP_LSC) | |
131 | card->cccr.low_speed = 1; | |
132 | if (data & SDIO_CCCR_CAP_4BLS) | |
133 | card->cccr.wide_bus = 1; | |
134 | ||
135 | if (cccr_vsn >= SDIO_CCCR_REV_1_10) { | |
136 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_POWER, 0, &data); | |
137 | if (ret) | |
138 | goto out; | |
139 | ||
140 | if (data & SDIO_POWER_SMPC) | |
141 | card->cccr.high_power = 1; | |
142 | } | |
143 | ||
144 | if (cccr_vsn >= SDIO_CCCR_REV_1_20) { | |
a303c531 | 145 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); |
35c66c19 PO |
146 | if (ret) |
147 | goto out; | |
148 | ||
a303c531 PR |
149 | card->scr.sda_spec3 = 0; |
150 | card->sw_caps.sd3_bus_mode = 0; | |
151 | card->sw_caps.sd3_drv_type = 0; | |
152 | if (cccr_vsn >= SDIO_CCCR_REV_3_00) { | |
153 | card->scr.sda_spec3 = 1; | |
154 | ret = mmc_io_rw_direct(card, 0, 0, | |
155 | SDIO_CCCR_UHS, 0, &data); | |
156 | if (ret) | |
157 | goto out; | |
158 | ||
159 | if (card->host->caps & | |
160 | (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | | |
161 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | | |
162 | MMC_CAP_UHS_DDR50)) { | |
163 | if (data & SDIO_UHS_DDR50) | |
164 | card->sw_caps.sd3_bus_mode | |
165 | |= SD_MODE_UHS_DDR50; | |
166 | ||
167 | if (data & SDIO_UHS_SDR50) | |
168 | card->sw_caps.sd3_bus_mode | |
169 | |= SD_MODE_UHS_SDR50; | |
170 | ||
171 | if (data & SDIO_UHS_SDR104) | |
172 | card->sw_caps.sd3_bus_mode | |
173 | |= SD_MODE_UHS_SDR104; | |
174 | } | |
175 | ||
176 | ret = mmc_io_rw_direct(card, 0, 0, | |
177 | SDIO_CCCR_DRIVE_STRENGTH, 0, &data); | |
178 | if (ret) | |
179 | goto out; | |
180 | ||
181 | if (data & SDIO_DRIVE_SDTA) | |
182 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_A; | |
183 | if (data & SDIO_DRIVE_SDTC) | |
184 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C; | |
185 | if (data & SDIO_DRIVE_SDTD) | |
186 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D; | |
187 | } | |
188 | ||
189 | /* if no uhs mode ensure we check for high speed */ | |
190 | if (!card->sw_caps.sd3_bus_mode) { | |
191 | if (speed & SDIO_SPEED_SHS) { | |
192 | card->cccr.high_speed = 1; | |
193 | card->sw_caps.hs_max_dtr = 50000000; | |
194 | } else { | |
195 | card->cccr.high_speed = 0; | |
196 | card->sw_caps.hs_max_dtr = 25000000; | |
197 | } | |
198 | } | |
35c66c19 PO |
199 | } |
200 | ||
201 | out: | |
202 | return ret; | |
203 | } | |
204 | ||
4ff6471c PO |
205 | static int sdio_enable_wide(struct mmc_card *card) |
206 | { | |
207 | int ret; | |
208 | u8 ctrl; | |
209 | ||
210 | if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) | |
211 | return 0; | |
212 | ||
213 | if (card->cccr.low_speed && !card->cccr.wide_bus) | |
214 | return 0; | |
215 | ||
216 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); | |
217 | if (ret) | |
218 | return ret; | |
219 | ||
220 | ctrl |= SDIO_BUS_WIDTH_4BIT; | |
221 | ||
222 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); | |
223 | if (ret) | |
224 | return ret; | |
225 | ||
7310ece8 | 226 | return 1; |
4ff6471c PO |
227 | } |
228 | ||
006ebd5d OBC |
229 | /* |
230 | * If desired, disconnect the pull-up resistor on CD/DAT[3] (pin 1) | |
231 | * of the card. This may be required on certain setups of boards, | |
232 | * controllers and embedded sdio device which do not need the card's | |
233 | * pull-up. As a result, card detection is disabled and power is saved. | |
234 | */ | |
235 | static int sdio_disable_cd(struct mmc_card *card) | |
236 | { | |
237 | int ret; | |
238 | u8 ctrl; | |
239 | ||
2059a02d | 240 | if (!mmc_card_disable_cd(card)) |
006ebd5d OBC |
241 | return 0; |
242 | ||
243 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); | |
244 | if (ret) | |
245 | return ret; | |
246 | ||
247 | ctrl |= SDIO_BUS_CD_DISABLE; | |
248 | ||
249 | return mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); | |
250 | } | |
251 | ||
6b5eda36 DD |
252 | /* |
253 | * Devices that remain active during a system suspend are | |
254 | * put back into 1-bit mode. | |
255 | */ | |
256 | static int sdio_disable_wide(struct mmc_card *card) | |
257 | { | |
258 | int ret; | |
259 | u8 ctrl; | |
260 | ||
261 | if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) | |
262 | return 0; | |
263 | ||
264 | if (card->cccr.low_speed && !card->cccr.wide_bus) | |
265 | return 0; | |
266 | ||
267 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); | |
268 | if (ret) | |
269 | return ret; | |
270 | ||
271 | if (!(ctrl & SDIO_BUS_WIDTH_4BIT)) | |
272 | return 0; | |
273 | ||
274 | ctrl &= ~SDIO_BUS_WIDTH_4BIT; | |
275 | ctrl |= SDIO_BUS_ASYNC_INT; | |
276 | ||
277 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); | |
278 | if (ret) | |
279 | return ret; | |
280 | ||
281 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_1); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
7310ece8 MM |
286 | |
287 | static int sdio_enable_4bit_bus(struct mmc_card *card) | |
288 | { | |
289 | int err; | |
290 | ||
291 | if (card->type == MMC_TYPE_SDIO) | |
292 | return sdio_enable_wide(card); | |
293 | ||
294 | if ((card->host->caps & MMC_CAP_4_BIT_DATA) && | |
295 | (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { | |
296 | err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); | |
297 | if (err) | |
298 | return err; | |
299 | } else | |
300 | return 0; | |
301 | ||
302 | err = sdio_enable_wide(card); | |
303 | if (err <= 0) | |
304 | mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1); | |
305 | ||
306 | return err; | |
307 | } | |
308 | ||
309 | ||
d16f5770 PO |
310 | /* |
311 | * Test if the card supports high-speed mode and, if so, switch to it. | |
312 | */ | |
7310ece8 | 313 | static int mmc_sdio_switch_hs(struct mmc_card *card, int enable) |
d16f5770 PO |
314 | { |
315 | int ret; | |
316 | u8 speed; | |
317 | ||
318 | if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) | |
319 | return 0; | |
320 | ||
321 | if (!card->cccr.high_speed) | |
322 | return 0; | |
323 | ||
324 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); | |
325 | if (ret) | |
326 | return ret; | |
327 | ||
7310ece8 MM |
328 | if (enable) |
329 | speed |= SDIO_SPEED_EHS; | |
330 | else | |
331 | speed &= ~SDIO_SPEED_EHS; | |
d16f5770 PO |
332 | |
333 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); | |
334 | if (ret) | |
335 | return ret; | |
336 | ||
71578a1e MM |
337 | return 1; |
338 | } | |
d16f5770 | 339 | |
7310ece8 MM |
340 | /* |
341 | * Enable SDIO/combo card's high-speed mode. Return 0/1 if [not]supported. | |
342 | */ | |
343 | static int sdio_enable_hs(struct mmc_card *card) | |
344 | { | |
345 | int ret; | |
346 | ||
347 | ret = mmc_sdio_switch_hs(card, true); | |
348 | if (ret <= 0 || card->type == MMC_TYPE_SDIO) | |
349 | return ret; | |
350 | ||
351 | ret = mmc_sd_switch_hs(card); | |
352 | if (ret <= 0) | |
353 | mmc_sdio_switch_hs(card, false); | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
71578a1e MM |
358 | static unsigned mmc_sdio_get_max_clock(struct mmc_card *card) |
359 | { | |
360 | unsigned max_dtr; | |
361 | ||
362 | if (mmc_card_highspeed(card)) { | |
363 | /* | |
364 | * The SDIO specification doesn't mention how | |
365 | * the CIS transfer speed register relates to | |
366 | * high-speed, but it seems that 50 MHz is | |
367 | * mandatory. | |
368 | */ | |
369 | max_dtr = 50000000; | |
370 | } else { | |
371 | max_dtr = card->cis.max_dtr; | |
372 | } | |
373 | ||
7310ece8 MM |
374 | if (card->type == MMC_TYPE_SD_COMBO) |
375 | max_dtr = min(max_dtr, mmc_sd_get_max_clock(card)); | |
376 | ||
71578a1e | 377 | return max_dtr; |
d16f5770 PO |
378 | } |
379 | ||
a303c531 PR |
380 | static unsigned char host_drive_to_sdio_drive(int host_strength) |
381 | { | |
382 | switch (host_strength) { | |
383 | case MMC_SET_DRIVER_TYPE_A: | |
384 | return SDIO_DTSx_SET_TYPE_A; | |
385 | case MMC_SET_DRIVER_TYPE_B: | |
386 | return SDIO_DTSx_SET_TYPE_B; | |
387 | case MMC_SET_DRIVER_TYPE_C: | |
388 | return SDIO_DTSx_SET_TYPE_C; | |
389 | case MMC_SET_DRIVER_TYPE_D: | |
390 | return SDIO_DTSx_SET_TYPE_D; | |
391 | default: | |
392 | return SDIO_DTSx_SET_TYPE_B; | |
393 | } | |
394 | } | |
395 | ||
396 | static void sdio_select_driver_type(struct mmc_card *card) | |
397 | { | |
398 | int host_drv_type = SD_DRIVER_TYPE_B; | |
399 | int card_drv_type = SD_DRIVER_TYPE_B; | |
400 | int drive_strength; | |
401 | unsigned char card_strength; | |
402 | int err; | |
403 | ||
404 | /* | |
405 | * If the host doesn't support any of the Driver Types A,C or D, | |
406 | * or there is no board specific handler then default Driver | |
407 | * Type B is used. | |
408 | */ | |
409 | if (!(card->host->caps & | |
410 | (MMC_CAP_DRIVER_TYPE_A | | |
411 | MMC_CAP_DRIVER_TYPE_C | | |
412 | MMC_CAP_DRIVER_TYPE_D))) | |
413 | return; | |
414 | ||
415 | if (!card->host->ops->select_drive_strength) | |
416 | return; | |
417 | ||
418 | if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) | |
419 | host_drv_type |= SD_DRIVER_TYPE_A; | |
420 | ||
421 | if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) | |
422 | host_drv_type |= SD_DRIVER_TYPE_C; | |
423 | ||
424 | if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) | |
425 | host_drv_type |= SD_DRIVER_TYPE_D; | |
426 | ||
427 | if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A) | |
428 | card_drv_type |= SD_DRIVER_TYPE_A; | |
429 | ||
430 | if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) | |
431 | card_drv_type |= SD_DRIVER_TYPE_C; | |
432 | ||
433 | if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_D) | |
434 | card_drv_type |= SD_DRIVER_TYPE_D; | |
435 | ||
436 | /* | |
437 | * The drive strength that the hardware can support | |
438 | * depends on the board design. Pass the appropriate | |
439 | * information and let the hardware specific code | |
440 | * return what is possible given the options | |
441 | */ | |
442 | drive_strength = card->host->ops->select_drive_strength( | |
443 | card->sw_caps.uhs_max_dtr, | |
444 | host_drv_type, card_drv_type); | |
445 | ||
446 | /* if error just use default for drive strength B */ | |
447 | err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_DRIVE_STRENGTH, 0, | |
448 | &card_strength); | |
449 | if (err) | |
450 | return; | |
451 | ||
452 | card_strength &= ~(SDIO_DRIVE_DTSx_MASK<<SDIO_DRIVE_DTSx_SHIFT); | |
453 | card_strength |= host_drive_to_sdio_drive(drive_strength); | |
454 | ||
455 | err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_DRIVE_STRENGTH, | |
456 | card_strength, NULL); | |
457 | ||
458 | /* if error default to drive strength B */ | |
459 | if (!err) | |
460 | mmc_set_driver_type(card->host, drive_strength); | |
461 | } | |
462 | ||
463 | ||
464 | static int sdio_set_bus_speed_mode(struct mmc_card *card) | |
465 | { | |
466 | unsigned int bus_speed, timing; | |
467 | int err; | |
468 | unsigned char speed; | |
469 | ||
470 | /* | |
471 | * If the host doesn't support any of the UHS-I modes, fallback on | |
472 | * default speed. | |
473 | */ | |
474 | if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | | |
475 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) | |
476 | return 0; | |
477 | ||
478 | bus_speed = SDIO_SPEED_SDR12; | |
479 | timing = MMC_TIMING_UHS_SDR12; | |
480 | if ((card->host->caps & MMC_CAP_UHS_SDR104) && | |
481 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { | |
482 | bus_speed = SDIO_SPEED_SDR104; | |
483 | timing = MMC_TIMING_UHS_SDR104; | |
484 | card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; | |
485 | } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && | |
486 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { | |
487 | bus_speed = SDIO_SPEED_DDR50; | |
488 | timing = MMC_TIMING_UHS_DDR50; | |
489 | card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; | |
490 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | | |
491 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & | |
492 | SD_MODE_UHS_SDR50)) { | |
493 | bus_speed = SDIO_SPEED_SDR50; | |
494 | timing = MMC_TIMING_UHS_SDR50; | |
495 | card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; | |
496 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | | |
497 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && | |
498 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { | |
499 | bus_speed = SDIO_SPEED_SDR25; | |
500 | timing = MMC_TIMING_UHS_SDR25; | |
501 | card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; | |
502 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | | |
503 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | | |
504 | MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & | |
505 | SD_MODE_UHS_SDR12)) { | |
506 | bus_speed = SDIO_SPEED_SDR12; | |
507 | timing = MMC_TIMING_UHS_SDR12; | |
508 | card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; | |
509 | } | |
510 | ||
511 | err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); | |
512 | if (err) | |
513 | return err; | |
514 | ||
515 | speed &= ~SDIO_SPEED_BSS_MASK; | |
516 | speed |= bus_speed; | |
517 | err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); | |
518 | if (err) | |
519 | return err; | |
520 | ||
521 | if (bus_speed) { | |
522 | mmc_set_timing(card->host, timing); | |
523 | mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); | |
524 | } | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | /* | |
530 | * UHS-I specific initialization procedure | |
531 | */ | |
532 | static int mmc_sdio_init_uhs_card(struct mmc_card *card) | |
533 | { | |
534 | int err; | |
535 | ||
536 | if (!card->scr.sda_spec3) | |
537 | return 0; | |
538 | ||
539 | /* | |
540 | * Switch to wider bus (if supported). | |
541 | */ | |
542 | if (card->host->caps & MMC_CAP_4_BIT_DATA) { | |
543 | err = sdio_enable_4bit_bus(card); | |
544 | if (err > 0) { | |
545 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); | |
546 | err = 0; | |
547 | } | |
548 | } | |
549 | ||
550 | /* Set the driver strength for the card */ | |
551 | sdio_select_driver_type(card); | |
552 | ||
553 | /* Set bus speed mode of the card */ | |
554 | err = sdio_set_bus_speed_mode(card); | |
555 | if (err) | |
556 | goto out; | |
557 | ||
558 | /* Initialize and start re-tuning timer */ | |
559 | if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) | |
a4924c71 G |
560 | err = card->host->ops->execute_tuning(card->host, |
561 | MMC_SEND_TUNING_BLOCK); | |
a303c531 PR |
562 | |
563 | out: | |
564 | ||
565 | return err; | |
566 | } | |
567 | ||
17d33e14 NP |
568 | /* |
569 | * Handle the detection and initialisation of a card. | |
570 | * | |
571 | * In the case of a resume, "oldcard" will contain the card | |
572 | * we're trying to reinitialise. | |
573 | */ | |
574 | static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, | |
3bca4cf7 | 575 | struct mmc_card *oldcard, int powered_resume) |
17d33e14 NP |
576 | { |
577 | struct mmc_card *card; | |
578 | int err; | |
579 | ||
580 | BUG_ON(!host); | |
581 | WARN_ON(!host->claimed); | |
582 | ||
583 | /* | |
584 | * Inform the card of the voltage | |
585 | */ | |
3bca4cf7 CB |
586 | if (!powered_resume) { |
587 | err = mmc_send_io_op_cond(host, host->ocr, &ocr); | |
588 | if (err) | |
589 | goto err; | |
590 | } | |
17d33e14 NP |
591 | |
592 | /* | |
593 | * For SPI, enable CRC as appropriate. | |
594 | */ | |
595 | if (mmc_host_is_spi(host)) { | |
596 | err = mmc_spi_set_crc(host, use_spi_crc); | |
597 | if (err) | |
598 | goto err; | |
599 | } | |
600 | ||
601 | /* | |
602 | * Allocate card structure. | |
603 | */ | |
604 | card = mmc_alloc_card(host, NULL); | |
605 | if (IS_ERR(card)) { | |
606 | err = PTR_ERR(card); | |
607 | goto err; | |
608 | } | |
609 | ||
d6d50a15 AN |
610 | if ((ocr & R4_MEMORY_PRESENT) && |
611 | mmc_sd_get_cid(host, host->ocr & ocr, card->raw_cid, NULL) == 0) { | |
7310ece8 MM |
612 | card->type = MMC_TYPE_SD_COMBO; |
613 | ||
614 | if (oldcard && (oldcard->type != MMC_TYPE_SD_COMBO || | |
615 | memcmp(card->raw_cid, oldcard->raw_cid, sizeof(card->raw_cid)) != 0)) { | |
616 | mmc_remove_card(card); | |
617 | return -ENOENT; | |
618 | } | |
619 | } else { | |
620 | card->type = MMC_TYPE_SDIO; | |
621 | ||
622 | if (oldcard && oldcard->type != MMC_TYPE_SDIO) { | |
623 | mmc_remove_card(card); | |
624 | return -ENOENT; | |
625 | } | |
626 | } | |
17d33e14 | 627 | |
3fcb027d DM |
628 | /* |
629 | * Call the optional HC's init_card function to handle quirks. | |
630 | */ | |
631 | if (host->ops->init_card) | |
632 | host->ops->init_card(host, card); | |
633 | ||
a303c531 PR |
634 | /* |
635 | * If the host and card support UHS-I mode request the card | |
636 | * to switch to 1.8V signaling level. No 1.8v signalling if | |
637 | * UHS mode is not enabled to maintain compatibilty and some | |
638 | * systems that claim 1.8v signalling in fact do not support | |
639 | * it. | |
640 | */ | |
641 | if ((ocr & R4_18V_PRESENT) && | |
642 | (host->caps & | |
643 | (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | | |
644 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | | |
645 | MMC_CAP_UHS_DDR50))) { | |
646 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, | |
647 | true); | |
648 | if (err) { | |
649 | ocr &= ~R4_18V_PRESENT; | |
650 | host->ocr &= ~R4_18V_PRESENT; | |
651 | } | |
652 | err = 0; | |
653 | } else { | |
654 | ocr &= ~R4_18V_PRESENT; | |
655 | host->ocr &= ~R4_18V_PRESENT; | |
656 | } | |
657 | ||
17d33e14 NP |
658 | /* |
659 | * For native busses: set card RCA and quit open drain mode. | |
660 | */ | |
3bca4cf7 | 661 | if (!powered_resume && !mmc_host_is_spi(host)) { |
17d33e14 NP |
662 | err = mmc_send_relative_addr(host, &card->rca); |
663 | if (err) | |
664 | goto remove; | |
665 | ||
0aab3995 SNX |
666 | /* |
667 | * Update oldcard with the new RCA received from the SDIO | |
668 | * device -- we're doing this so that it's updated in the | |
669 | * "card" struct when oldcard overwrites that later. | |
670 | */ | |
671 | if (oldcard) | |
672 | oldcard->rca = card->rca; | |
17d33e14 NP |
673 | } |
674 | ||
7310ece8 MM |
675 | /* |
676 | * Read CSD, before selecting the card | |
677 | */ | |
678 | if (!oldcard && card->type == MMC_TYPE_SD_COMBO) { | |
679 | err = mmc_sd_get_csd(host, card); | |
680 | if (err) | |
681 | return err; | |
682 | ||
683 | mmc_decode_cid(card); | |
684 | } | |
685 | ||
17d33e14 NP |
686 | /* |
687 | * Select card, as all following commands rely on that. | |
688 | */ | |
3bca4cf7 | 689 | if (!powered_resume && !mmc_host_is_spi(host)) { |
17d33e14 NP |
690 | err = mmc_select_card(card); |
691 | if (err) | |
692 | goto remove; | |
693 | } | |
694 | ||
6f51be3d GI |
695 | if (card->quirks & MMC_QUIRK_NONSTD_SDIO) { |
696 | /* | |
697 | * This is non-standard SDIO device, meaning it doesn't | |
698 | * have any CIA (Common I/O area) registers present. | |
699 | * It's host's responsibility to fill cccr and cis | |
700 | * structures in init_card(). | |
701 | */ | |
702 | mmc_set_clock(host, card->cis.max_dtr); | |
703 | ||
704 | if (card->cccr.high_speed) { | |
705 | mmc_card_set_highspeed(card); | |
706 | mmc_set_timing(card->host, MMC_TIMING_SD_HS); | |
707 | } | |
708 | ||
709 | goto finish; | |
710 | } | |
711 | ||
17d33e14 NP |
712 | /* |
713 | * Read the common registers. | |
714 | */ | |
715 | err = sdio_read_cccr(card); | |
716 | if (err) | |
717 | goto remove; | |
718 | ||
719 | /* | |
720 | * Read the common CIS tuples. | |
721 | */ | |
722 | err = sdio_read_common_cis(card); | |
723 | if (err) | |
724 | goto remove; | |
725 | ||
726 | if (oldcard) { | |
727 | int same = (card->cis.vendor == oldcard->cis.vendor && | |
728 | card->cis.device == oldcard->cis.device); | |
729 | mmc_remove_card(card); | |
7310ece8 MM |
730 | if (!same) |
731 | return -ENOENT; | |
732 | ||
17d33e14 NP |
733 | card = oldcard; |
734 | } | |
32780cd1 | 735 | mmc_fixup_device(card, NULL); |
17d33e14 | 736 | |
7310ece8 MM |
737 | if (card->type == MMC_TYPE_SD_COMBO) { |
738 | err = mmc_sd_setup_card(host, card, oldcard != NULL); | |
739 | /* handle as SDIO-only card if memory init failed */ | |
740 | if (err) { | |
741 | mmc_go_idle(host); | |
742 | if (mmc_host_is_spi(host)) | |
743 | /* should not fail, as it worked previously */ | |
744 | mmc_spi_set_crc(host, use_spi_crc); | |
745 | card->type = MMC_TYPE_SDIO; | |
746 | } else | |
747 | card->dev.type = &sd_type; | |
748 | } | |
749 | ||
750 | /* | |
751 | * If needed, disconnect card detection pull-up resistor. | |
752 | */ | |
753 | err = sdio_disable_cd(card); | |
754 | if (err) | |
755 | goto remove; | |
756 | ||
a303c531 PR |
757 | /* Initialization sequence for UHS-I cards */ |
758 | /* Only if card supports 1.8v and UHS signaling */ | |
759 | if ((ocr & R4_18V_PRESENT) && card->sw_caps.sd3_bus_mode) { | |
760 | err = mmc_sdio_init_uhs_card(card); | |
761 | if (err) | |
762 | goto remove; | |
17d33e14 | 763 | |
a303c531 PR |
764 | /* Card is an ultra-high-speed card */ |
765 | mmc_card_set_uhs(card); | |
766 | } else { | |
767 | /* | |
768 | * Switch to high-speed (if supported). | |
769 | */ | |
770 | err = sdio_enable_hs(card); | |
771 | if (err > 0) | |
772 | mmc_sd_go_highspeed(card); | |
773 | else if (err) | |
774 | goto remove; | |
17d33e14 | 775 | |
a303c531 PR |
776 | /* |
777 | * Change to the card's maximum speed. | |
778 | */ | |
779 | mmc_set_clock(host, mmc_sdio_get_max_clock(card)); | |
17d33e14 | 780 | |
a303c531 PR |
781 | /* |
782 | * Switch to wider bus (if supported). | |
783 | */ | |
784 | err = sdio_enable_4bit_bus(card); | |
785 | if (err > 0) | |
786 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); | |
787 | else if (err) | |
788 | goto remove; | |
789 | } | |
6f51be3d | 790 | finish: |
17d33e14 NP |
791 | if (!oldcard) |
792 | host->card = card; | |
793 | return 0; | |
794 | ||
795 | remove: | |
796 | if (!oldcard) | |
797 | mmc_remove_card(card); | |
798 | ||
799 | err: | |
800 | return err; | |
801 | } | |
802 | ||
5c4e6f13 PO |
803 | /* |
804 | * Host is being removed. Free up the current card. | |
805 | */ | |
806 | static void mmc_sdio_remove(struct mmc_host *host) | |
807 | { | |
e29a7d73 PO |
808 | int i; |
809 | ||
5c4e6f13 PO |
810 | BUG_ON(!host); |
811 | BUG_ON(!host->card); | |
812 | ||
e29a7d73 PO |
813 | for (i = 0;i < host->card->sdio_funcs;i++) { |
814 | if (host->card->sdio_func[i]) { | |
815 | sdio_remove_func(host->card->sdio_func[i]); | |
816 | host->card->sdio_func[i] = NULL; | |
817 | } | |
818 | } | |
819 | ||
5c4e6f13 PO |
820 | mmc_remove_card(host->card); |
821 | host->card = NULL; | |
822 | } | |
823 | ||
d3049504 AH |
824 | /* |
825 | * Card detection - card is alive. | |
826 | */ | |
827 | static int mmc_sdio_alive(struct mmc_host *host) | |
828 | { | |
829 | return mmc_select_card(host->card); | |
830 | } | |
831 | ||
5c4e6f13 PO |
832 | /* |
833 | * Card detection callback from host. | |
834 | */ | |
835 | static void mmc_sdio_detect(struct mmc_host *host) | |
836 | { | |
837 | int err; | |
838 | ||
839 | BUG_ON(!host); | |
840 | BUG_ON(!host->card); | |
841 | ||
87973ba2 | 842 | /* Make sure card is powered before detecting it */ |
ed919b01 OBC |
843 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
844 | err = pm_runtime_get_sync(&host->card->dev); | |
845 | if (err < 0) | |
846 | goto out; | |
847 | } | |
87973ba2 | 848 | |
5c4e6f13 PO |
849 | mmc_claim_host(host); |
850 | ||
851 | /* | |
852 | * Just check if our card has been removed. | |
853 | */ | |
d3049504 | 854 | err = _mmc_detect_card_removed(host); |
5c4e6f13 PO |
855 | |
856 | mmc_release_host(host); | |
857 | ||
4d0812c3 OBC |
858 | /* |
859 | * Tell PM core it's OK to power off the card now. | |
860 | * | |
861 | * The _sync variant is used in order to ensure that the card | |
862 | * is left powered off in case an error occurred, and the card | |
863 | * is going to be removed. | |
864 | * | |
865 | * Since there is no specific reason to believe a new user | |
866 | * is about to show up at this point, the _sync variant is | |
867 | * desirable anyway. | |
868 | */ | |
ed919b01 OBC |
869 | if (host->caps & MMC_CAP_POWER_OFF_CARD) |
870 | pm_runtime_put_sync(&host->card->dev); | |
4d0812c3 | 871 | |
87973ba2 | 872 | out: |
5c4e6f13 PO |
873 | if (err) { |
874 | mmc_sdio_remove(host); | |
875 | ||
876 | mmc_claim_host(host); | |
877 | mmc_detach_bus(host); | |
7f7e4129 | 878 | mmc_power_off(host); |
5c4e6f13 PO |
879 | mmc_release_host(host); |
880 | } | |
881 | } | |
882 | ||
17d33e14 NP |
883 | /* |
884 | * SDIO suspend. We need to suspend all functions separately. | |
885 | * Therefore all registered functions must have drivers with suspend | |
886 | * and resume methods. Failing that we simply remove the whole card. | |
887 | */ | |
95cdfb72 | 888 | static int mmc_sdio_suspend(struct mmc_host *host) |
17d33e14 | 889 | { |
95cdfb72 | 890 | int i, err = 0; |
17d33e14 | 891 | |
17d33e14 NP |
892 | for (i = 0; i < host->card->sdio_funcs; i++) { |
893 | struct sdio_func *func = host->card->sdio_func[i]; | |
894 | if (func && sdio_func_present(func) && func->dev.driver) { | |
895 | const struct dev_pm_ops *pmops = func->dev.driver->pm; | |
896 | if (!pmops || !pmops->suspend || !pmops->resume) { | |
95cdfb72 NP |
897 | /* force removal of entire card in that case */ |
898 | err = -ENOSYS; | |
899 | } else | |
900 | err = pmops->suspend(&func->dev); | |
901 | if (err) | |
902 | break; | |
17d33e14 NP |
903 | } |
904 | } | |
95cdfb72 | 905 | while (err && --i >= 0) { |
17d33e14 NP |
906 | struct sdio_func *func = host->card->sdio_func[i]; |
907 | if (func && sdio_func_present(func) && func->dev.driver) { | |
908 | const struct dev_pm_ops *pmops = func->dev.driver->pm; | |
95cdfb72 | 909 | pmops->resume(&func->dev); |
17d33e14 NP |
910 | } |
911 | } | |
95cdfb72 | 912 | |
6b93d01f | 913 | if (!err && mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { |
6b5eda36 DD |
914 | mmc_claim_host(host); |
915 | sdio_disable_wide(host->card); | |
916 | mmc_release_host(host); | |
917 | } | |
918 | ||
95cdfb72 | 919 | return err; |
17d33e14 NP |
920 | } |
921 | ||
95cdfb72 | 922 | static int mmc_sdio_resume(struct mmc_host *host) |
17d33e14 | 923 | { |
080bc977 | 924 | int i, err = 0; |
17d33e14 NP |
925 | |
926 | BUG_ON(!host); | |
927 | BUG_ON(!host->card); | |
928 | ||
95cdfb72 | 929 | /* Basic card reinitialization. */ |
17d33e14 | 930 | mmc_claim_host(host); |
080bc977 OBC |
931 | |
932 | /* No need to reinitialize powered-resumed nonremovable cards */ | |
a5e9425d | 933 | if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) |
080bc977 | 934 | err = mmc_sdio_init_card(host, host->ocr, host->card, |
a5e9425d | 935 | mmc_card_keep_power(host)); |
6b93d01f | 936 | else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { |
080bc977 OBC |
937 | /* We may have switched to 1-bit mode during suspend */ |
938 | err = sdio_enable_4bit_bus(host->card); | |
939 | if (err > 0) { | |
940 | mmc_set_bus_width(host, MMC_BUS_WIDTH_4); | |
941 | err = 0; | |
942 | } | |
943 | } | |
944 | ||
40216842 NP |
945 | if (!err && host->sdio_irqs) |
946 | mmc_signal_sdio_irq(host); | |
17d33e14 | 947 | mmc_release_host(host); |
17d33e14 | 948 | |
95cdfb72 NP |
949 | /* |
950 | * If the card looked to be the same as before suspending, then | |
951 | * we proceed to resume all card functions. If one of them returns | |
952 | * an error then we simply return that error to the core and the | |
953 | * card will be redetected as new. It is the responsibility of | |
954 | * the function driver to perform further tests with the extra | |
955 | * knowledge it has of the card to confirm the card is indeed the | |
956 | * same as before suspending (same MAC address for network cards, | |
957 | * etc.) and return an error otherwise. | |
958 | */ | |
959 | for (i = 0; !err && i < host->card->sdio_funcs; i++) { | |
17d33e14 NP |
960 | struct sdio_func *func = host->card->sdio_func[i]; |
961 | if (func && sdio_func_present(func) && func->dev.driver) { | |
962 | const struct dev_pm_ops *pmops = func->dev.driver->pm; | |
95cdfb72 | 963 | err = pmops->resume(&func->dev); |
17d33e14 NP |
964 | } |
965 | } | |
95cdfb72 NP |
966 | |
967 | return err; | |
17d33e14 | 968 | } |
5c4e6f13 | 969 | |
d3fe37b1 OBC |
970 | static int mmc_sdio_power_restore(struct mmc_host *host) |
971 | { | |
972 | int ret; | |
c6e633ad | 973 | u32 ocr; |
d3fe37b1 OBC |
974 | |
975 | BUG_ON(!host); | |
976 | BUG_ON(!host->card); | |
977 | ||
978 | mmc_claim_host(host); | |
c6e633ad DD |
979 | |
980 | /* | |
981 | * Reset the card by performing the same steps that are taken by | |
982 | * mmc_rescan_try_freq() and mmc_attach_sdio() during a "normal" probe. | |
983 | * | |
984 | * sdio_reset() is technically not needed. Having just powered up the | |
985 | * hardware, it should already be in reset state. However, some | |
986 | * platforms (such as SD8686 on OLPC) do not instantly cut power, | |
987 | * meaning that a reset is required when restoring power soon after | |
988 | * powering off. It is harmless in other cases. | |
989 | * | |
990 | * The CMD5 reset (mmc_send_io_op_cond()), according to the SDIO spec, | |
991 | * is not necessary for non-removable cards. However, it is required | |
992 | * for OLPC SD8686 (which expects a [CMD5,5,3,7] init sequence), and | |
993 | * harmless in other situations. | |
994 | * | |
995 | * With these steps taken, mmc_select_voltage() is also required to | |
996 | * restore the correct voltage setting of the card. | |
997 | */ | |
998 | sdio_reset(host); | |
999 | mmc_go_idle(host); | |
1000 | mmc_send_if_cond(host, host->ocr_avail); | |
1001 | ||
1002 | ret = mmc_send_io_op_cond(host, 0, &ocr); | |
1003 | if (ret) | |
1004 | goto out; | |
1005 | ||
1006 | if (host->ocr_avail_sdio) | |
1007 | host->ocr_avail = host->ocr_avail_sdio; | |
1008 | ||
1009 | host->ocr = mmc_select_voltage(host, ocr & ~0x7F); | |
1010 | if (!host->ocr) { | |
1011 | ret = -EINVAL; | |
1012 | goto out; | |
1013 | } | |
1014 | ||
d3fe37b1 | 1015 | ret = mmc_sdio_init_card(host, host->ocr, host->card, |
a5e9425d | 1016 | mmc_card_keep_power(host)); |
d3fe37b1 OBC |
1017 | if (!ret && host->sdio_irqs) |
1018 | mmc_signal_sdio_irq(host); | |
c6e633ad DD |
1019 | |
1020 | out: | |
d3fe37b1 OBC |
1021 | mmc_release_host(host); |
1022 | ||
1023 | return ret; | |
1024 | } | |
1025 | ||
5c4e6f13 PO |
1026 | static const struct mmc_bus_ops mmc_sdio_ops = { |
1027 | .remove = mmc_sdio_remove, | |
1028 | .detect = mmc_sdio_detect, | |
17d33e14 NP |
1029 | .suspend = mmc_sdio_suspend, |
1030 | .resume = mmc_sdio_resume, | |
d3fe37b1 | 1031 | .power_restore = mmc_sdio_power_restore, |
d3049504 | 1032 | .alive = mmc_sdio_alive, |
5c4e6f13 PO |
1033 | }; |
1034 | ||
1035 | ||
1036 | /* | |
1037 | * Starting point for SDIO card init. | |
1038 | */ | |
807e8e40 | 1039 | int mmc_attach_sdio(struct mmc_host *host) |
5c4e6f13 | 1040 | { |
807e8e40 AR |
1041 | int err, i, funcs; |
1042 | u32 ocr; | |
5c4e6f13 PO |
1043 | struct mmc_card *card; |
1044 | ||
1045 | BUG_ON(!host); | |
d84075c8 | 1046 | WARN_ON(!host->claimed); |
5c4e6f13 | 1047 | |
807e8e40 AR |
1048 | err = mmc_send_io_op_cond(host, 0, &ocr); |
1049 | if (err) | |
1050 | return err; | |
1051 | ||
5c4e6f13 | 1052 | mmc_attach_bus(host, &mmc_sdio_ops); |
8f230f45 TI |
1053 | if (host->ocr_avail_sdio) |
1054 | host->ocr_avail = host->ocr_avail_sdio; | |
5c4e6f13 PO |
1055 | |
1056 | /* | |
1057 | * Sanity check the voltages that the card claims to | |
1058 | * support. | |
1059 | */ | |
1060 | if (ocr & 0x7F) { | |
a3c76eb9 | 1061 | pr_warning("%s: card claims to support voltages " |
5c4e6f13 PO |
1062 | "below the defined range. These will be ignored.\n", |
1063 | mmc_hostname(host)); | |
1064 | ocr &= ~0x7F; | |
1065 | } | |
1066 | ||
5c4e6f13 PO |
1067 | host->ocr = mmc_select_voltage(host, ocr); |
1068 | ||
1069 | /* | |
1070 | * Can we support the voltage(s) of the card(s)? | |
1071 | */ | |
1072 | if (!host->ocr) { | |
1073 | err = -EINVAL; | |
1074 | goto err; | |
1075 | } | |
1076 | ||
1077 | /* | |
17d33e14 | 1078 | * Detect and init the card. |
5c4e6f13 | 1079 | */ |
3bca4cf7 | 1080 | err = mmc_sdio_init_card(host, host->ocr, NULL, 0); |
a303c531 PR |
1081 | if (err) { |
1082 | if (err == -EAGAIN) { | |
1083 | /* | |
1084 | * Retry initialization with S18R set to 0. | |
1085 | */ | |
1086 | host->ocr &= ~R4_18V_PRESENT; | |
1087 | err = mmc_sdio_init_card(host, host->ocr, NULL, 0); | |
1088 | } | |
1089 | if (err) | |
1090 | goto err; | |
1091 | } | |
17d33e14 | 1092 | card = host->card; |
af517150 | 1093 | |
81968561 | 1094 | /* |
ed919b01 | 1095 | * Enable runtime PM only if supported by host+card+board |
81968561 | 1096 | */ |
ed919b01 OBC |
1097 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
1098 | /* | |
1099 | * Let runtime PM core know our card is active | |
1100 | */ | |
1101 | err = pm_runtime_set_active(&card->dev); | |
1102 | if (err) | |
1103 | goto remove; | |
81968561 | 1104 | |
ed919b01 OBC |
1105 | /* |
1106 | * Enable runtime PM for this card | |
1107 | */ | |
1108 | pm_runtime_enable(&card->dev); | |
1109 | } | |
81968561 | 1110 | |
5c4e6f13 PO |
1111 | /* |
1112 | * The number of functions on the card is encoded inside | |
1113 | * the ocr. | |
1114 | */ | |
e8812793 MF |
1115 | funcs = (ocr & 0x70000000) >> 28; |
1116 | card->sdio_funcs = 0; | |
4ff6471c | 1117 | |
e29a7d73 PO |
1118 | /* |
1119 | * Initialize (but don't add) all present functions. | |
1120 | */ | |
e8812793 | 1121 | for (i = 0; i < funcs; i++, card->sdio_funcs++) { |
e29a7d73 PO |
1122 | err = sdio_init_func(host->card, i + 1); |
1123 | if (err) | |
1124 | goto remove; | |
40bba0c1 OBC |
1125 | |
1126 | /* | |
ed919b01 | 1127 | * Enable Runtime PM for this func (if supported) |
40bba0c1 | 1128 | */ |
ed919b01 OBC |
1129 | if (host->caps & MMC_CAP_POWER_OFF_CARD) |
1130 | pm_runtime_enable(&card->sdio_func[i]->dev); | |
e29a7d73 | 1131 | } |
5c4e6f13 | 1132 | |
e29a7d73 PO |
1133 | /* |
1134 | * First add the card to the driver model... | |
1135 | */ | |
807e8e40 | 1136 | mmc_release_host(host); |
5c4e6f13 PO |
1137 | err = mmc_add_card(host->card); |
1138 | if (err) | |
e29a7d73 PO |
1139 | goto remove_added; |
1140 | ||
1141 | /* | |
1142 | * ...then the SDIO functions. | |
1143 | */ | |
1144 | for (i = 0;i < funcs;i++) { | |
1145 | err = sdio_add_func(host->card->sdio_func[i]); | |
1146 | if (err) | |
1147 | goto remove_added; | |
1148 | } | |
5c4e6f13 | 1149 | |
34497913 | 1150 | mmc_claim_host(host); |
5c4e6f13 PO |
1151 | return 0; |
1152 | ||
e29a7d73 PO |
1153 | |
1154 | remove_added: | |
1155 | /* Remove without lock if the device has been added. */ | |
1156 | mmc_sdio_remove(host); | |
5c4e6f13 | 1157 | mmc_claim_host(host); |
e29a7d73 PO |
1158 | remove: |
1159 | /* And with lock if it hasn't been added. */ | |
807e8e40 | 1160 | mmc_release_host(host); |
e29a7d73 PO |
1161 | if (host->card) |
1162 | mmc_sdio_remove(host); | |
807e8e40 | 1163 | mmc_claim_host(host); |
5c4e6f13 PO |
1164 | err: |
1165 | mmc_detach_bus(host); | |
5c4e6f13 | 1166 | |
a3c76eb9 | 1167 | pr_err("%s: error %d whilst initialising SDIO card\n", |
5c4e6f13 PO |
1168 | mmc_hostname(host), err); |
1169 | ||
1170 | return err; | |
1171 | } | |
1172 |