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Commit | Line | Data |
---|---|---|
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 | ||
2d0d68f5 | 101 | static int sdio_read_cccr(struct mmc_card *card, u32 ocr) |
35c66c19 PO |
102 | { |
103 | int ret; | |
104 | int cccr_vsn; | |
2d0d68f5 | 105 | int uhs = ocr & R4_18V_PRESENT; |
35c66c19 | 106 | unsigned char data; |
a303c531 | 107 | unsigned char speed; |
35c66c19 | 108 | |
35c66c19 PO |
109 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CCCR, 0, &data); |
110 | if (ret) | |
111 | goto out; | |
112 | ||
113 | cccr_vsn = data & 0x0f; | |
114 | ||
b4625dab | 115 | if (cccr_vsn > SDIO_CCCR_REV_3_00) { |
a3c76eb9 | 116 | pr_err("%s: unrecognised CCCR structure version %d\n", |
35c66c19 PO |
117 | mmc_hostname(card->host), cccr_vsn); |
118 | return -EINVAL; | |
119 | } | |
120 | ||
121 | card->cccr.sdio_vsn = (data & 0xf0) >> 4; | |
122 | ||
123 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CAPS, 0, &data); | |
124 | if (ret) | |
125 | goto out; | |
126 | ||
127 | if (data & SDIO_CCCR_CAP_SMB) | |
128 | card->cccr.multi_block = 1; | |
129 | if (data & SDIO_CCCR_CAP_LSC) | |
130 | card->cccr.low_speed = 1; | |
131 | if (data & SDIO_CCCR_CAP_4BLS) | |
132 | card->cccr.wide_bus = 1; | |
133 | ||
134 | if (cccr_vsn >= SDIO_CCCR_REV_1_10) { | |
135 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_POWER, 0, &data); | |
136 | if (ret) | |
137 | goto out; | |
138 | ||
139 | if (data & SDIO_POWER_SMPC) | |
140 | card->cccr.high_power = 1; | |
141 | } | |
142 | ||
143 | if (cccr_vsn >= SDIO_CCCR_REV_1_20) { | |
a303c531 | 144 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); |
35c66c19 PO |
145 | if (ret) |
146 | goto out; | |
147 | ||
a303c531 PR |
148 | card->scr.sda_spec3 = 0; |
149 | card->sw_caps.sd3_bus_mode = 0; | |
150 | card->sw_caps.sd3_drv_type = 0; | |
2d0d68f5 | 151 | if (cccr_vsn >= SDIO_CCCR_REV_3_00 && uhs) { |
a303c531 PR |
152 | card->scr.sda_spec3 = 1; |
153 | ret = mmc_io_rw_direct(card, 0, 0, | |
154 | SDIO_CCCR_UHS, 0, &data); | |
155 | if (ret) | |
156 | goto out; | |
157 | ||
41875e38 | 158 | if (mmc_host_uhs(card->host)) { |
a303c531 PR |
159 | if (data & SDIO_UHS_DDR50) |
160 | card->sw_caps.sd3_bus_mode | |
161 | |= SD_MODE_UHS_DDR50; | |
162 | ||
163 | if (data & SDIO_UHS_SDR50) | |
164 | card->sw_caps.sd3_bus_mode | |
165 | |= SD_MODE_UHS_SDR50; | |
166 | ||
167 | if (data & SDIO_UHS_SDR104) | |
168 | card->sw_caps.sd3_bus_mode | |
169 | |= SD_MODE_UHS_SDR104; | |
170 | } | |
171 | ||
172 | ret = mmc_io_rw_direct(card, 0, 0, | |
173 | SDIO_CCCR_DRIVE_STRENGTH, 0, &data); | |
174 | if (ret) | |
175 | goto out; | |
176 | ||
177 | if (data & SDIO_DRIVE_SDTA) | |
178 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_A; | |
179 | if (data & SDIO_DRIVE_SDTC) | |
180 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C; | |
181 | if (data & SDIO_DRIVE_SDTD) | |
182 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D; | |
183 | } | |
184 | ||
185 | /* if no uhs mode ensure we check for high speed */ | |
186 | if (!card->sw_caps.sd3_bus_mode) { | |
187 | if (speed & SDIO_SPEED_SHS) { | |
188 | card->cccr.high_speed = 1; | |
189 | card->sw_caps.hs_max_dtr = 50000000; | |
190 | } else { | |
191 | card->cccr.high_speed = 0; | |
192 | card->sw_caps.hs_max_dtr = 25000000; | |
193 | } | |
194 | } | |
35c66c19 PO |
195 | } |
196 | ||
197 | out: | |
198 | return ret; | |
199 | } | |
200 | ||
4ff6471c PO |
201 | static int sdio_enable_wide(struct mmc_card *card) |
202 | { | |
203 | int ret; | |
204 | u8 ctrl; | |
205 | ||
206 | if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) | |
207 | return 0; | |
208 | ||
209 | if (card->cccr.low_speed && !card->cccr.wide_bus) | |
210 | return 0; | |
211 | ||
212 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); | |
213 | if (ret) | |
214 | return ret; | |
215 | ||
2a0fe914 | 216 | if ((ctrl & SDIO_BUS_WIDTH_MASK) == SDIO_BUS_WIDTH_RESERVED) |
6606110d JP |
217 | pr_warn("%s: SDIO_CCCR_IF is invalid: 0x%02x\n", |
218 | mmc_hostname(card->host), ctrl); | |
2a0fe914 YD |
219 | |
220 | /* set as 4-bit bus width */ | |
221 | ctrl &= ~SDIO_BUS_WIDTH_MASK; | |
4ff6471c PO |
222 | ctrl |= SDIO_BUS_WIDTH_4BIT; |
223 | ||
224 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); | |
225 | if (ret) | |
226 | return ret; | |
227 | ||
7310ece8 | 228 | return 1; |
4ff6471c PO |
229 | } |
230 | ||
006ebd5d OBC |
231 | /* |
232 | * If desired, disconnect the pull-up resistor on CD/DAT[3] (pin 1) | |
233 | * of the card. This may be required on certain setups of boards, | |
234 | * controllers and embedded sdio device which do not need the card's | |
235 | * pull-up. As a result, card detection is disabled and power is saved. | |
236 | */ | |
237 | static int sdio_disable_cd(struct mmc_card *card) | |
238 | { | |
239 | int ret; | |
240 | u8 ctrl; | |
241 | ||
2059a02d | 242 | if (!mmc_card_disable_cd(card)) |
006ebd5d OBC |
243 | return 0; |
244 | ||
245 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); | |
246 | if (ret) | |
247 | return ret; | |
248 | ||
249 | ctrl |= SDIO_BUS_CD_DISABLE; | |
250 | ||
251 | return mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); | |
252 | } | |
253 | ||
6b5eda36 DD |
254 | /* |
255 | * Devices that remain active during a system suspend are | |
256 | * put back into 1-bit mode. | |
257 | */ | |
258 | static int sdio_disable_wide(struct mmc_card *card) | |
259 | { | |
260 | int ret; | |
261 | u8 ctrl; | |
262 | ||
263 | if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) | |
264 | return 0; | |
265 | ||
266 | if (card->cccr.low_speed && !card->cccr.wide_bus) | |
267 | return 0; | |
268 | ||
269 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); | |
270 | if (ret) | |
271 | return ret; | |
272 | ||
273 | if (!(ctrl & SDIO_BUS_WIDTH_4BIT)) | |
274 | return 0; | |
275 | ||
276 | ctrl &= ~SDIO_BUS_WIDTH_4BIT; | |
277 | ctrl |= SDIO_BUS_ASYNC_INT; | |
278 | ||
279 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); | |
280 | if (ret) | |
281 | return ret; | |
282 | ||
283 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_1); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
7310ece8 MM |
288 | |
289 | static int sdio_enable_4bit_bus(struct mmc_card *card) | |
290 | { | |
291 | int err; | |
292 | ||
293 | if (card->type == MMC_TYPE_SDIO) | |
303dbedc N |
294 | err = sdio_enable_wide(card); |
295 | else if ((card->host->caps & MMC_CAP_4_BIT_DATA) && | |
296 | (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { | |
7310ece8 MM |
297 | err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); |
298 | if (err) | |
299 | return err; | |
303dbedc N |
300 | err = sdio_enable_wide(card); |
301 | if (err <= 0) | |
302 | mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1); | |
7310ece8 MM |
303 | } else |
304 | return 0; | |
305 | ||
303dbedc N |
306 | if (err > 0) { |
307 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); | |
308 | err = 0; | |
309 | } | |
7310ece8 MM |
310 | |
311 | return err; | |
312 | } | |
313 | ||
314 | ||
d16f5770 PO |
315 | /* |
316 | * Test if the card supports high-speed mode and, if so, switch to it. | |
317 | */ | |
7310ece8 | 318 | static int mmc_sdio_switch_hs(struct mmc_card *card, int enable) |
d16f5770 PO |
319 | { |
320 | int ret; | |
321 | u8 speed; | |
322 | ||
323 | if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) | |
324 | return 0; | |
325 | ||
326 | if (!card->cccr.high_speed) | |
327 | return 0; | |
328 | ||
329 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); | |
330 | if (ret) | |
331 | return ret; | |
332 | ||
7310ece8 MM |
333 | if (enable) |
334 | speed |= SDIO_SPEED_EHS; | |
335 | else | |
336 | speed &= ~SDIO_SPEED_EHS; | |
d16f5770 PO |
337 | |
338 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); | |
339 | if (ret) | |
340 | return ret; | |
341 | ||
71578a1e MM |
342 | return 1; |
343 | } | |
d16f5770 | 344 | |
7310ece8 MM |
345 | /* |
346 | * Enable SDIO/combo card's high-speed mode. Return 0/1 if [not]supported. | |
347 | */ | |
348 | static int sdio_enable_hs(struct mmc_card *card) | |
349 | { | |
350 | int ret; | |
351 | ||
352 | ret = mmc_sdio_switch_hs(card, true); | |
353 | if (ret <= 0 || card->type == MMC_TYPE_SDIO) | |
354 | return ret; | |
355 | ||
356 | ret = mmc_sd_switch_hs(card); | |
357 | if (ret <= 0) | |
358 | mmc_sdio_switch_hs(card, false); | |
359 | ||
360 | return ret; | |
361 | } | |
362 | ||
71578a1e MM |
363 | static unsigned mmc_sdio_get_max_clock(struct mmc_card *card) |
364 | { | |
365 | unsigned max_dtr; | |
366 | ||
cdc99179 | 367 | if (mmc_card_hs(card)) { |
71578a1e MM |
368 | /* |
369 | * The SDIO specification doesn't mention how | |
370 | * the CIS transfer speed register relates to | |
371 | * high-speed, but it seems that 50 MHz is | |
372 | * mandatory. | |
373 | */ | |
374 | max_dtr = 50000000; | |
375 | } else { | |
376 | max_dtr = card->cis.max_dtr; | |
377 | } | |
378 | ||
7310ece8 MM |
379 | if (card->type == MMC_TYPE_SD_COMBO) |
380 | max_dtr = min(max_dtr, mmc_sd_get_max_clock(card)); | |
381 | ||
71578a1e | 382 | return max_dtr; |
d16f5770 PO |
383 | } |
384 | ||
a303c531 PR |
385 | static unsigned char host_drive_to_sdio_drive(int host_strength) |
386 | { | |
387 | switch (host_strength) { | |
388 | case MMC_SET_DRIVER_TYPE_A: | |
389 | return SDIO_DTSx_SET_TYPE_A; | |
390 | case MMC_SET_DRIVER_TYPE_B: | |
391 | return SDIO_DTSx_SET_TYPE_B; | |
392 | case MMC_SET_DRIVER_TYPE_C: | |
393 | return SDIO_DTSx_SET_TYPE_C; | |
394 | case MMC_SET_DRIVER_TYPE_D: | |
395 | return SDIO_DTSx_SET_TYPE_D; | |
396 | default: | |
397 | return SDIO_DTSx_SET_TYPE_B; | |
398 | } | |
399 | } | |
400 | ||
401 | static void sdio_select_driver_type(struct mmc_card *card) | |
402 | { | |
fa021cef | 403 | int card_drv_type, drive_strength, drv_type; |
a303c531 PR |
404 | unsigned char card_strength; |
405 | int err; | |
406 | ||
3853a042 AH |
407 | card->drive_strength = 0; |
408 | ||
fa021cef | 409 | card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; |
a303c531 | 410 | |
e23350b3 AH |
411 | drive_strength = mmc_select_drive_strength(card, |
412 | card->sw_caps.uhs_max_dtr, | |
413 | card_drv_type, &drv_type); | |
a303c531 | 414 | |
b4f30a17 AH |
415 | if (drive_strength) { |
416 | /* if error just use default for drive strength B */ | |
417 | err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_DRIVE_STRENGTH, 0, | |
418 | &card_strength); | |
419 | if (err) | |
420 | return; | |
a303c531 | 421 | |
b4f30a17 AH |
422 | card_strength &= ~(SDIO_DRIVE_DTSx_MASK<<SDIO_DRIVE_DTSx_SHIFT); |
423 | card_strength |= host_drive_to_sdio_drive(drive_strength); | |
a303c531 | 424 | |
b4f30a17 AH |
425 | /* if error default to drive strength B */ |
426 | err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_DRIVE_STRENGTH, | |
427 | card_strength, NULL); | |
428 | if (err) | |
429 | return; | |
3853a042 | 430 | card->drive_strength = drive_strength; |
b4f30a17 | 431 | } |
a303c531 | 432 | |
b4f30a17 AH |
433 | if (drv_type) |
434 | mmc_set_driver_type(card->host, drv_type); | |
a303c531 PR |
435 | } |
436 | ||
437 | ||
438 | static int sdio_set_bus_speed_mode(struct mmc_card *card) | |
439 | { | |
440 | unsigned int bus_speed, timing; | |
441 | int err; | |
442 | unsigned char speed; | |
443 | ||
444 | /* | |
445 | * If the host doesn't support any of the UHS-I modes, fallback on | |
446 | * default speed. | |
447 | */ | |
41875e38 | 448 | if (!mmc_host_uhs(card->host)) |
a303c531 PR |
449 | return 0; |
450 | ||
451 | bus_speed = SDIO_SPEED_SDR12; | |
452 | timing = MMC_TIMING_UHS_SDR12; | |
453 | if ((card->host->caps & MMC_CAP_UHS_SDR104) && | |
454 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { | |
455 | bus_speed = SDIO_SPEED_SDR104; | |
456 | timing = MMC_TIMING_UHS_SDR104; | |
457 | card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; | |
77e2ff08 | 458 | card->sd_bus_speed = UHS_SDR104_BUS_SPEED; |
a303c531 PR |
459 | } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && |
460 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { | |
461 | bus_speed = SDIO_SPEED_DDR50; | |
462 | timing = MMC_TIMING_UHS_DDR50; | |
463 | card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; | |
77e2ff08 | 464 | card->sd_bus_speed = UHS_DDR50_BUS_SPEED; |
a303c531 PR |
465 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
466 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & | |
467 | SD_MODE_UHS_SDR50)) { | |
468 | bus_speed = SDIO_SPEED_SDR50; | |
469 | timing = MMC_TIMING_UHS_SDR50; | |
470 | card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; | |
77e2ff08 | 471 | card->sd_bus_speed = UHS_SDR50_BUS_SPEED; |
a303c531 PR |
472 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
473 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && | |
474 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { | |
475 | bus_speed = SDIO_SPEED_SDR25; | |
476 | timing = MMC_TIMING_UHS_SDR25; | |
477 | card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; | |
77e2ff08 | 478 | card->sd_bus_speed = UHS_SDR25_BUS_SPEED; |
a303c531 PR |
479 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
480 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | | |
481 | MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & | |
482 | SD_MODE_UHS_SDR12)) { | |
483 | bus_speed = SDIO_SPEED_SDR12; | |
484 | timing = MMC_TIMING_UHS_SDR12; | |
485 | card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; | |
77e2ff08 | 486 | card->sd_bus_speed = UHS_SDR12_BUS_SPEED; |
a303c531 PR |
487 | } |
488 | ||
489 | err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); | |
490 | if (err) | |
491 | return err; | |
492 | ||
493 | speed &= ~SDIO_SPEED_BSS_MASK; | |
494 | speed |= bus_speed; | |
495 | err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); | |
496 | if (err) | |
497 | return err; | |
498 | ||
499 | if (bus_speed) { | |
500 | mmc_set_timing(card->host, timing); | |
501 | mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); | |
502 | } | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | /* | |
508 | * UHS-I specific initialization procedure | |
509 | */ | |
510 | static int mmc_sdio_init_uhs_card(struct mmc_card *card) | |
511 | { | |
512 | int err; | |
513 | ||
514 | if (!card->scr.sda_spec3) | |
515 | return 0; | |
516 | ||
517 | /* | |
518 | * Switch to wider bus (if supported). | |
519 | */ | |
303dbedc | 520 | if (card->host->caps & MMC_CAP_4_BIT_DATA) |
a303c531 | 521 | err = sdio_enable_4bit_bus(card); |
a303c531 PR |
522 | |
523 | /* Set the driver strength for the card */ | |
524 | sdio_select_driver_type(card); | |
525 | ||
526 | /* Set bus speed mode of the card */ | |
527 | err = sdio_set_bus_speed_mode(card); | |
528 | if (err) | |
529 | goto out; | |
530 | ||
810e08ee FS |
531 | /* |
532 | * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and | |
533 | * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. | |
534 | */ | |
63e415c6 | 535 | if (!mmc_host_is_spi(card->host) && |
e10c3219 CC |
536 | ((card->host->ios.timing == MMC_TIMING_UHS_SDR50) || |
537 | (card->host->ios.timing == MMC_TIMING_UHS_SDR104))) | |
63e415c6 | 538 | err = mmc_execute_tuning(card); |
a303c531 | 539 | out: |
a303c531 PR |
540 | return err; |
541 | } | |
542 | ||
17d33e14 NP |
543 | /* |
544 | * Handle the detection and initialisation of a card. | |
545 | * | |
546 | * In the case of a resume, "oldcard" will contain the card | |
547 | * we're trying to reinitialise. | |
548 | */ | |
549 | static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, | |
3bca4cf7 | 550 | struct mmc_card *oldcard, int powered_resume) |
17d33e14 NP |
551 | { |
552 | struct mmc_card *card; | |
553 | int err; | |
0797e5f1 | 554 | int retries = 10; |
db4a0d05 | 555 | u32 rocr = 0; |
69041150 | 556 | u32 ocr_card = ocr; |
17d33e14 NP |
557 | |
558 | BUG_ON(!host); | |
559 | WARN_ON(!host->claimed); | |
560 | ||
db4a0d05 UH |
561 | /* to query card if 1.8V signalling is supported */ |
562 | if (mmc_host_uhs(host)) | |
563 | ocr |= R4_18V_PRESENT; | |
564 | ||
0797e5f1 JR |
565 | try_again: |
566 | if (!retries) { | |
6606110d | 567 | pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); |
0797e5f1 | 568 | ocr &= ~R4_18V_PRESENT; |
0797e5f1 JR |
569 | } |
570 | ||
17d33e14 NP |
571 | /* |
572 | * Inform the card of the voltage | |
573 | */ | |
3bca4cf7 | 574 | if (!powered_resume) { |
db4a0d05 | 575 | err = mmc_send_io_op_cond(host, ocr, &rocr); |
3bca4cf7 CB |
576 | if (err) |
577 | goto err; | |
578 | } | |
17d33e14 NP |
579 | |
580 | /* | |
581 | * For SPI, enable CRC as appropriate. | |
582 | */ | |
583 | if (mmc_host_is_spi(host)) { | |
584 | err = mmc_spi_set_crc(host, use_spi_crc); | |
585 | if (err) | |
586 | goto err; | |
587 | } | |
588 | ||
589 | /* | |
590 | * Allocate card structure. | |
591 | */ | |
592 | card = mmc_alloc_card(host, NULL); | |
593 | if (IS_ERR(card)) { | |
594 | err = PTR_ERR(card); | |
595 | goto err; | |
596 | } | |
597 | ||
db4a0d05 UH |
598 | if ((rocr & R4_MEMORY_PRESENT) && |
599 | mmc_sd_get_cid(host, ocr & rocr, card->raw_cid, NULL) == 0) { | |
7310ece8 MM |
600 | card->type = MMC_TYPE_SD_COMBO; |
601 | ||
602 | if (oldcard && (oldcard->type != MMC_TYPE_SD_COMBO || | |
603 | memcmp(card->raw_cid, oldcard->raw_cid, sizeof(card->raw_cid)) != 0)) { | |
604 | mmc_remove_card(card); | |
605 | return -ENOENT; | |
606 | } | |
607 | } else { | |
608 | card->type = MMC_TYPE_SDIO; | |
609 | ||
610 | if (oldcard && oldcard->type != MMC_TYPE_SDIO) { | |
611 | mmc_remove_card(card); | |
612 | return -ENOENT; | |
613 | } | |
614 | } | |
17d33e14 | 615 | |
3fcb027d DM |
616 | /* |
617 | * Call the optional HC's init_card function to handle quirks. | |
618 | */ | |
619 | if (host->ops->init_card) | |
620 | host->ops->init_card(host, card); | |
621 | ||
a303c531 PR |
622 | /* |
623 | * If the host and card support UHS-I mode request the card | |
624 | * to switch to 1.8V signaling level. No 1.8v signalling if | |
7122bbb0 | 625 | * UHS mode is not enabled to maintain compatibility and some |
a303c531 PR |
626 | * systems that claim 1.8v signalling in fact do not support |
627 | * it. | |
628 | */ | |
db4a0d05 | 629 | if (!powered_resume && (rocr & ocr & R4_18V_PRESENT)) { |
0f791fda | 630 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, |
d9bfbb95 | 631 | ocr_card); |
0797e5f1 JR |
632 | if (err == -EAGAIN) { |
633 | sdio_reset(host); | |
634 | mmc_go_idle(host); | |
635 | mmc_send_if_cond(host, host->ocr_avail); | |
636 | mmc_remove_card(card); | |
637 | retries--; | |
638 | goto try_again; | |
639 | } else if (err) { | |
a303c531 | 640 | ocr &= ~R4_18V_PRESENT; |
a303c531 PR |
641 | } |
642 | err = 0; | |
643 | } else { | |
644 | ocr &= ~R4_18V_PRESENT; | |
a303c531 PR |
645 | } |
646 | ||
17d33e14 NP |
647 | /* |
648 | * For native busses: set card RCA and quit open drain mode. | |
649 | */ | |
3bca4cf7 | 650 | if (!powered_resume && !mmc_host_is_spi(host)) { |
17d33e14 NP |
651 | err = mmc_send_relative_addr(host, &card->rca); |
652 | if (err) | |
653 | goto remove; | |
654 | ||
0aab3995 SNX |
655 | /* |
656 | * Update oldcard with the new RCA received from the SDIO | |
657 | * device -- we're doing this so that it's updated in the | |
658 | * "card" struct when oldcard overwrites that later. | |
659 | */ | |
660 | if (oldcard) | |
661 | oldcard->rca = card->rca; | |
17d33e14 NP |
662 | } |
663 | ||
7310ece8 MM |
664 | /* |
665 | * Read CSD, before selecting the card | |
666 | */ | |
667 | if (!oldcard && card->type == MMC_TYPE_SD_COMBO) { | |
668 | err = mmc_sd_get_csd(host, card); | |
669 | if (err) | |
670 | return err; | |
671 | ||
672 | mmc_decode_cid(card); | |
673 | } | |
674 | ||
17d33e14 NP |
675 | /* |
676 | * Select card, as all following commands rely on that. | |
677 | */ | |
3bca4cf7 | 678 | if (!powered_resume && !mmc_host_is_spi(host)) { |
17d33e14 NP |
679 | err = mmc_select_card(card); |
680 | if (err) | |
681 | goto remove; | |
682 | } | |
683 | ||
6f51be3d GI |
684 | if (card->quirks & MMC_QUIRK_NONSTD_SDIO) { |
685 | /* | |
686 | * This is non-standard SDIO device, meaning it doesn't | |
687 | * have any CIA (Common I/O area) registers present. | |
688 | * It's host's responsibility to fill cccr and cis | |
689 | * structures in init_card(). | |
690 | */ | |
691 | mmc_set_clock(host, card->cis.max_dtr); | |
692 | ||
693 | if (card->cccr.high_speed) { | |
6f51be3d GI |
694 | mmc_set_timing(card->host, MMC_TIMING_SD_HS); |
695 | } | |
696 | ||
697 | goto finish; | |
698 | } | |
699 | ||
17d33e14 NP |
700 | /* |
701 | * Read the common registers. | |
702 | */ | |
2d0d68f5 | 703 | err = sdio_read_cccr(card, ocr); |
17d33e14 NP |
704 | if (err) |
705 | goto remove; | |
706 | ||
707 | /* | |
708 | * Read the common CIS tuples. | |
709 | */ | |
710 | err = sdio_read_common_cis(card); | |
711 | if (err) | |
712 | goto remove; | |
713 | ||
714 | if (oldcard) { | |
715 | int same = (card->cis.vendor == oldcard->cis.vendor && | |
716 | card->cis.device == oldcard->cis.device); | |
717 | mmc_remove_card(card); | |
7310ece8 MM |
718 | if (!same) |
719 | return -ENOENT; | |
720 | ||
17d33e14 NP |
721 | card = oldcard; |
722 | } | |
69041150 | 723 | card->ocr = ocr_card; |
32780cd1 | 724 | mmc_fixup_device(card, NULL); |
17d33e14 | 725 | |
7310ece8 MM |
726 | if (card->type == MMC_TYPE_SD_COMBO) { |
727 | err = mmc_sd_setup_card(host, card, oldcard != NULL); | |
728 | /* handle as SDIO-only card if memory init failed */ | |
729 | if (err) { | |
730 | mmc_go_idle(host); | |
731 | if (mmc_host_is_spi(host)) | |
732 | /* should not fail, as it worked previously */ | |
733 | mmc_spi_set_crc(host, use_spi_crc); | |
734 | card->type = MMC_TYPE_SDIO; | |
735 | } else | |
736 | card->dev.type = &sd_type; | |
737 | } | |
738 | ||
739 | /* | |
740 | * If needed, disconnect card detection pull-up resistor. | |
741 | */ | |
742 | err = sdio_disable_cd(card); | |
743 | if (err) | |
744 | goto remove; | |
745 | ||
a303c531 PR |
746 | /* Initialization sequence for UHS-I cards */ |
747 | /* Only if card supports 1.8v and UHS signaling */ | |
748 | if ((ocr & R4_18V_PRESENT) && card->sw_caps.sd3_bus_mode) { | |
749 | err = mmc_sdio_init_uhs_card(card); | |
750 | if (err) | |
751 | goto remove; | |
a303c531 PR |
752 | } else { |
753 | /* | |
754 | * Switch to high-speed (if supported). | |
755 | */ | |
756 | err = sdio_enable_hs(card); | |
757 | if (err > 0) | |
cdc99179 | 758 | mmc_set_timing(card->host, MMC_TIMING_SD_HS); |
a303c531 PR |
759 | else if (err) |
760 | goto remove; | |
17d33e14 | 761 | |
a303c531 PR |
762 | /* |
763 | * Change to the card's maximum speed. | |
764 | */ | |
765 | mmc_set_clock(host, mmc_sdio_get_max_clock(card)); | |
17d33e14 | 766 | |
a303c531 PR |
767 | /* |
768 | * Switch to wider bus (if supported). | |
769 | */ | |
770 | err = sdio_enable_4bit_bus(card); | |
303dbedc | 771 | if (err) |
a303c531 PR |
772 | goto remove; |
773 | } | |
6f51be3d | 774 | finish: |
17d33e14 NP |
775 | if (!oldcard) |
776 | host->card = card; | |
777 | return 0; | |
778 | ||
779 | remove: | |
780 | if (!oldcard) | |
781 | mmc_remove_card(card); | |
782 | ||
783 | err: | |
784 | return err; | |
785 | } | |
786 | ||
5c4e6f13 PO |
787 | /* |
788 | * Host is being removed. Free up the current card. | |
789 | */ | |
790 | static void mmc_sdio_remove(struct mmc_host *host) | |
791 | { | |
e29a7d73 PO |
792 | int i; |
793 | ||
5c4e6f13 PO |
794 | BUG_ON(!host); |
795 | BUG_ON(!host->card); | |
796 | ||
e29a7d73 PO |
797 | for (i = 0;i < host->card->sdio_funcs;i++) { |
798 | if (host->card->sdio_func[i]) { | |
799 | sdio_remove_func(host->card->sdio_func[i]); | |
800 | host->card->sdio_func[i] = NULL; | |
801 | } | |
802 | } | |
803 | ||
5c4e6f13 PO |
804 | mmc_remove_card(host->card); |
805 | host->card = NULL; | |
806 | } | |
807 | ||
d3049504 AH |
808 | /* |
809 | * Card detection - card is alive. | |
810 | */ | |
811 | static int mmc_sdio_alive(struct mmc_host *host) | |
812 | { | |
813 | return mmc_select_card(host->card); | |
814 | } | |
815 | ||
5c4e6f13 PO |
816 | /* |
817 | * Card detection callback from host. | |
818 | */ | |
819 | static void mmc_sdio_detect(struct mmc_host *host) | |
820 | { | |
821 | int err; | |
822 | ||
823 | BUG_ON(!host); | |
824 | BUG_ON(!host->card); | |
825 | ||
87973ba2 | 826 | /* Make sure card is powered before detecting it */ |
ed919b01 OBC |
827 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
828 | err = pm_runtime_get_sync(&host->card->dev); | |
3bffb800 LF |
829 | if (err < 0) { |
830 | pm_runtime_put_noidle(&host->card->dev); | |
ed919b01 | 831 | goto out; |
3bffb800 | 832 | } |
ed919b01 | 833 | } |
87973ba2 | 834 | |
5c4e6f13 PO |
835 | mmc_claim_host(host); |
836 | ||
837 | /* | |
838 | * Just check if our card has been removed. | |
839 | */ | |
d3049504 | 840 | err = _mmc_detect_card_removed(host); |
5c4e6f13 PO |
841 | |
842 | mmc_release_host(host); | |
843 | ||
4d0812c3 OBC |
844 | /* |
845 | * Tell PM core it's OK to power off the card now. | |
846 | * | |
847 | * The _sync variant is used in order to ensure that the card | |
848 | * is left powered off in case an error occurred, and the card | |
849 | * is going to be removed. | |
850 | * | |
851 | * Since there is no specific reason to believe a new user | |
852 | * is about to show up at this point, the _sync variant is | |
853 | * desirable anyway. | |
854 | */ | |
ed919b01 OBC |
855 | if (host->caps & MMC_CAP_POWER_OFF_CARD) |
856 | pm_runtime_put_sync(&host->card->dev); | |
4d0812c3 | 857 | |
87973ba2 | 858 | out: |
5c4e6f13 PO |
859 | if (err) { |
860 | mmc_sdio_remove(host); | |
861 | ||
862 | mmc_claim_host(host); | |
863 | mmc_detach_bus(host); | |
7f7e4129 | 864 | mmc_power_off(host); |
5c4e6f13 PO |
865 | mmc_release_host(host); |
866 | } | |
867 | } | |
868 | ||
17d33e14 | 869 | /* |
810caddb | 870 | * SDIO pre_suspend. We need to suspend all functions separately. |
17d33e14 NP |
871 | * Therefore all registered functions must have drivers with suspend |
872 | * and resume methods. Failing that we simply remove the whole card. | |
873 | */ | |
810caddb | 874 | static int mmc_sdio_pre_suspend(struct mmc_host *host) |
17d33e14 | 875 | { |
95cdfb72 | 876 | int i, err = 0; |
17d33e14 | 877 | |
17d33e14 NP |
878 | for (i = 0; i < host->card->sdio_funcs; i++) { |
879 | struct sdio_func *func = host->card->sdio_func[i]; | |
880 | if (func && sdio_func_present(func) && func->dev.driver) { | |
881 | const struct dev_pm_ops *pmops = func->dev.driver->pm; | |
882 | if (!pmops || !pmops->suspend || !pmops->resume) { | |
95cdfb72 NP |
883 | /* force removal of entire card in that case */ |
884 | err = -ENOSYS; | |
810caddb UH |
885 | break; |
886 | } | |
887 | } | |
888 | } | |
889 | ||
890 | return err; | |
891 | } | |
892 | ||
893 | /* | |
894 | * SDIO suspend. Suspend all functions separately. | |
895 | */ | |
896 | static int mmc_sdio_suspend(struct mmc_host *host) | |
897 | { | |
8d1ffc8c UH |
898 | mmc_claim_host(host); |
899 | ||
900 | if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) | |
6b5eda36 | 901 | sdio_disable_wide(host->card); |
6b5eda36 | 902 | |
79d5a65a | 903 | if (!mmc_card_keep_power(host)) { |
74590263 | 904 | mmc_power_off(host); |
79d5a65a AH |
905 | } else if (host->retune_period) { |
906 | mmc_retune_timer_stop(host); | |
907 | mmc_retune_needed(host); | |
908 | } | |
74590263 | 909 | |
8d1ffc8c UH |
910 | mmc_release_host(host); |
911 | ||
573185cc | 912 | return 0; |
17d33e14 NP |
913 | } |
914 | ||
95cdfb72 | 915 | static int mmc_sdio_resume(struct mmc_host *host) |
17d33e14 | 916 | { |
573185cc | 917 | int err = 0; |
17d33e14 NP |
918 | |
919 | BUG_ON(!host); | |
920 | BUG_ON(!host->card); | |
921 | ||
95cdfb72 | 922 | /* Basic card reinitialization. */ |
17d33e14 | 923 | mmc_claim_host(host); |
080bc977 | 924 | |
74590263 UH |
925 | /* Restore power if needed */ |
926 | if (!mmc_card_keep_power(host)) { | |
69041150 | 927 | mmc_power_up(host, host->card->ocr); |
74590263 UH |
928 | /* |
929 | * Tell runtime PM core we just powered up the card, | |
930 | * since it still believes the card is powered off. | |
931 | * Note that currently runtime PM is only enabled | |
932 | * for SDIO cards that are MMC_CAP_POWER_OFF_CARD | |
933 | */ | |
934 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { | |
935 | pm_runtime_disable(&host->card->dev); | |
936 | pm_runtime_set_active(&host->card->dev); | |
937 | pm_runtime_enable(&host->card->dev); | |
938 | } | |
939 | } | |
940 | ||
080bc977 | 941 | /* No need to reinitialize powered-resumed nonremovable cards */ |
51aa66a5 SJ |
942 | if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) { |
943 | sdio_reset(host); | |
944 | mmc_go_idle(host); | |
006fc51c N |
945 | mmc_send_if_cond(host, host->card->ocr); |
946 | err = mmc_send_io_op_cond(host, 0, NULL); | |
947 | if (!err) | |
948 | err = mmc_sdio_init_card(host, host->card->ocr, | |
949 | host->card, | |
950 | mmc_card_keep_power(host)); | |
51aa66a5 | 951 | } else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { |
080bc977 OBC |
952 | /* We may have switched to 1-bit mode during suspend */ |
953 | err = sdio_enable_4bit_bus(host->card); | |
080bc977 OBC |
954 | } |
955 | ||
dea67c4e | 956 | if (!err && host->sdio_irqs) { |
9eadcc05 | 957 | if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) |
dea67c4e | 958 | wake_up_process(host->sdio_irq_thread); |
9eadcc05 | 959 | else if (host->caps & MMC_CAP_SDIO_IRQ) |
dea67c4e | 960 | host->ops->enable_sdio_irq(host, 1); |
dea67c4e FZ |
961 | } |
962 | ||
17d33e14 | 963 | mmc_release_host(host); |
17d33e14 | 964 | |
74590263 | 965 | host->pm_flags &= ~MMC_PM_KEEP_POWER; |
95cdfb72 | 966 | return err; |
17d33e14 | 967 | } |
5c4e6f13 | 968 | |
d3fe37b1 OBC |
969 | static int mmc_sdio_power_restore(struct mmc_host *host) |
970 | { | |
971 | int ret; | |
972 | ||
973 | BUG_ON(!host); | |
974 | BUG_ON(!host->card); | |
975 | ||
976 | mmc_claim_host(host); | |
c6e633ad DD |
977 | |
978 | /* | |
979 | * Reset the card by performing the same steps that are taken by | |
980 | * mmc_rescan_try_freq() and mmc_attach_sdio() during a "normal" probe. | |
981 | * | |
982 | * sdio_reset() is technically not needed. Having just powered up the | |
983 | * hardware, it should already be in reset state. However, some | |
984 | * platforms (such as SD8686 on OLPC) do not instantly cut power, | |
985 | * meaning that a reset is required when restoring power soon after | |
986 | * powering off. It is harmless in other cases. | |
987 | * | |
988 | * The CMD5 reset (mmc_send_io_op_cond()), according to the SDIO spec, | |
989 | * is not necessary for non-removable cards. However, it is required | |
990 | * for OLPC SD8686 (which expects a [CMD5,5,3,7] init sequence), and | |
991 | * harmless in other situations. | |
992 | * | |
c6e633ad | 993 | */ |
e7747475 | 994 | |
c6e633ad DD |
995 | sdio_reset(host); |
996 | mmc_go_idle(host); | |
59b6c9e0 | 997 | mmc_send_if_cond(host, host->card->ocr); |
c6e633ad | 998 | |
ce69d37b | 999 | ret = mmc_send_io_op_cond(host, 0, NULL); |
c6e633ad DD |
1000 | if (ret) |
1001 | goto out; | |
1002 | ||
ce69d37b | 1003 | ret = mmc_sdio_init_card(host, host->card->ocr, host->card, |
a5e9425d | 1004 | mmc_card_keep_power(host)); |
d3fe37b1 OBC |
1005 | if (!ret && host->sdio_irqs) |
1006 | mmc_signal_sdio_irq(host); | |
c6e633ad DD |
1007 | |
1008 | out: | |
d3fe37b1 OBC |
1009 | mmc_release_host(host); |
1010 | ||
1011 | return ret; | |
1012 | } | |
1013 | ||
12d01d0b UH |
1014 | static int mmc_sdio_runtime_suspend(struct mmc_host *host) |
1015 | { | |
1016 | /* No references to the card, cut the power to it. */ | |
8d1ffc8c | 1017 | mmc_claim_host(host); |
12d01d0b | 1018 | mmc_power_off(host); |
8d1ffc8c UH |
1019 | mmc_release_host(host); |
1020 | ||
12d01d0b UH |
1021 | return 0; |
1022 | } | |
1023 | ||
1024 | static int mmc_sdio_runtime_resume(struct mmc_host *host) | |
1025 | { | |
8d1ffc8c UH |
1026 | int ret; |
1027 | ||
12d01d0b | 1028 | /* Restore power and re-initialize. */ |
8d1ffc8c | 1029 | mmc_claim_host(host); |
69041150 | 1030 | mmc_power_up(host, host->card->ocr); |
8d1ffc8c UH |
1031 | ret = mmc_sdio_power_restore(host); |
1032 | mmc_release_host(host); | |
1033 | ||
1034 | return ret; | |
12d01d0b UH |
1035 | } |
1036 | ||
1fb654fd AF |
1037 | static int mmc_sdio_reset(struct mmc_host *host) |
1038 | { | |
1039 | mmc_power_cycle(host, host->card->ocr); | |
1040 | return mmc_sdio_power_restore(host); | |
1041 | } | |
1042 | ||
5c4e6f13 PO |
1043 | static const struct mmc_bus_ops mmc_sdio_ops = { |
1044 | .remove = mmc_sdio_remove, | |
1045 | .detect = mmc_sdio_detect, | |
810caddb | 1046 | .pre_suspend = mmc_sdio_pre_suspend, |
17d33e14 NP |
1047 | .suspend = mmc_sdio_suspend, |
1048 | .resume = mmc_sdio_resume, | |
12d01d0b UH |
1049 | .runtime_suspend = mmc_sdio_runtime_suspend, |
1050 | .runtime_resume = mmc_sdio_runtime_resume, | |
d3fe37b1 | 1051 | .power_restore = mmc_sdio_power_restore, |
d3049504 | 1052 | .alive = mmc_sdio_alive, |
1fb654fd | 1053 | .reset = mmc_sdio_reset, |
5c4e6f13 PO |
1054 | }; |
1055 | ||
1056 | ||
1057 | /* | |
1058 | * Starting point for SDIO card init. | |
1059 | */ | |
807e8e40 | 1060 | int mmc_attach_sdio(struct mmc_host *host) |
5c4e6f13 | 1061 | { |
807e8e40 | 1062 | int err, i, funcs; |
69041150 | 1063 | u32 ocr, rocr; |
5c4e6f13 PO |
1064 | struct mmc_card *card; |
1065 | ||
1066 | BUG_ON(!host); | |
d84075c8 | 1067 | WARN_ON(!host->claimed); |
5c4e6f13 | 1068 | |
807e8e40 AR |
1069 | err = mmc_send_io_op_cond(host, 0, &ocr); |
1070 | if (err) | |
1071 | return err; | |
1072 | ||
5c4e6f13 | 1073 | mmc_attach_bus(host, &mmc_sdio_ops); |
8f230f45 TI |
1074 | if (host->ocr_avail_sdio) |
1075 | host->ocr_avail = host->ocr_avail_sdio; | |
5c4e6f13 | 1076 | |
5c4e6f13 | 1077 | |
69041150 | 1078 | rocr = mmc_select_voltage(host, ocr); |
5c4e6f13 PO |
1079 | |
1080 | /* | |
1081 | * Can we support the voltage(s) of the card(s)? | |
1082 | */ | |
69041150 | 1083 | if (!rocr) { |
5c4e6f13 PO |
1084 | err = -EINVAL; |
1085 | goto err; | |
1086 | } | |
1087 | ||
1088 | /* | |
17d33e14 | 1089 | * Detect and init the card. |
5c4e6f13 | 1090 | */ |
69041150 | 1091 | err = mmc_sdio_init_card(host, rocr, NULL, 0); |
ec2ed700 UH |
1092 | if (err) |
1093 | goto err; | |
1094 | ||
17d33e14 | 1095 | card = host->card; |
af517150 | 1096 | |
81968561 | 1097 | /* |
ed919b01 | 1098 | * Enable runtime PM only if supported by host+card+board |
81968561 | 1099 | */ |
ed919b01 OBC |
1100 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
1101 | /* | |
1102 | * Let runtime PM core know our card is active | |
1103 | */ | |
1104 | err = pm_runtime_set_active(&card->dev); | |
1105 | if (err) | |
1106 | goto remove; | |
81968561 | 1107 | |
ed919b01 OBC |
1108 | /* |
1109 | * Enable runtime PM for this card | |
1110 | */ | |
1111 | pm_runtime_enable(&card->dev); | |
1112 | } | |
81968561 | 1113 | |
5c4e6f13 PO |
1114 | /* |
1115 | * The number of functions on the card is encoded inside | |
1116 | * the ocr. | |
1117 | */ | |
e8812793 MF |
1118 | funcs = (ocr & 0x70000000) >> 28; |
1119 | card->sdio_funcs = 0; | |
4ff6471c | 1120 | |
e29a7d73 PO |
1121 | /* |
1122 | * Initialize (but don't add) all present functions. | |
1123 | */ | |
e8812793 | 1124 | for (i = 0; i < funcs; i++, card->sdio_funcs++) { |
e29a7d73 PO |
1125 | err = sdio_init_func(host->card, i + 1); |
1126 | if (err) | |
1127 | goto remove; | |
40bba0c1 OBC |
1128 | |
1129 | /* | |
ed919b01 | 1130 | * Enable Runtime PM for this func (if supported) |
40bba0c1 | 1131 | */ |
ed919b01 OBC |
1132 | if (host->caps & MMC_CAP_POWER_OFF_CARD) |
1133 | pm_runtime_enable(&card->sdio_func[i]->dev); | |
e29a7d73 | 1134 | } |
5c4e6f13 | 1135 | |
e29a7d73 PO |
1136 | /* |
1137 | * First add the card to the driver model... | |
1138 | */ | |
807e8e40 | 1139 | mmc_release_host(host); |
5c4e6f13 PO |
1140 | err = mmc_add_card(host->card); |
1141 | if (err) | |
e29a7d73 PO |
1142 | goto remove_added; |
1143 | ||
1144 | /* | |
1145 | * ...then the SDIO functions. | |
1146 | */ | |
1147 | for (i = 0;i < funcs;i++) { | |
1148 | err = sdio_add_func(host->card->sdio_func[i]); | |
1149 | if (err) | |
1150 | goto remove_added; | |
1151 | } | |
5c4e6f13 | 1152 | |
34497913 | 1153 | mmc_claim_host(host); |
5c4e6f13 PO |
1154 | return 0; |
1155 | ||
e29a7d73 PO |
1156 | |
1157 | remove_added: | |
1158 | /* Remove without lock if the device has been added. */ | |
1159 | mmc_sdio_remove(host); | |
5c4e6f13 | 1160 | mmc_claim_host(host); |
e29a7d73 PO |
1161 | remove: |
1162 | /* And with lock if it hasn't been added. */ | |
807e8e40 | 1163 | mmc_release_host(host); |
e29a7d73 PO |
1164 | if (host->card) |
1165 | mmc_sdio_remove(host); | |
807e8e40 | 1166 | mmc_claim_host(host); |
5c4e6f13 PO |
1167 | err: |
1168 | mmc_detach_bus(host); | |
5c4e6f13 | 1169 | |
a3c76eb9 | 1170 | pr_err("%s: error %d whilst initialising SDIO card\n", |
5c4e6f13 PO |
1171 | mmc_hostname(host), err); |
1172 | ||
1173 | return err; | |
1174 | } | |
1175 |