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Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux...
[deliverable/linux.git] / drivers / mmc / host / sdhci-pci.c
1 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
2 *
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 *
10 * Thanks to the following companies for their support:
11 *
12 * - JMicron (hardware and technical support)
13 */
14
15 #include <linux/delay.h>
16 #include <linux/highmem.h>
17 #include <linux/module.h>
18 #include <linux/pci.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21 #include <linux/device.h>
22 #include <linux/mmc/host.h>
23 #include <linux/scatterlist.h>
24 #include <linux/io.h>
25 #include <linux/gpio.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/mmc/sdhci-pci-data.h>
28
29 #include "sdhci.h"
30 #include "sdhci-pci.h"
31 #include "sdhci-pci-o2micro.h"
32
33 /*****************************************************************************\
34 * *
35 * Hardware specific quirk handling *
36 * *
37 \*****************************************************************************/
38
39 static int ricoh_probe(struct sdhci_pci_chip *chip)
40 {
41 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
42 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
43 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
44 return 0;
45 }
46
47 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
48 {
49 slot->host->caps =
50 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
51 & SDHCI_TIMEOUT_CLK_MASK) |
52
53 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
54 & SDHCI_CLOCK_BASE_MASK) |
55
56 SDHCI_TIMEOUT_CLK_UNIT |
57 SDHCI_CAN_VDD_330 |
58 SDHCI_CAN_DO_HISPD |
59 SDHCI_CAN_DO_SDMA;
60 return 0;
61 }
62
63 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
64 {
65 /* Apply a delay to allow controller to settle */
66 /* Otherwise it becomes confused if card state changed
67 during suspend */
68 msleep(500);
69 return 0;
70 }
71
72 static const struct sdhci_pci_fixes sdhci_ricoh = {
73 .probe = ricoh_probe,
74 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
75 SDHCI_QUIRK_FORCE_DMA |
76 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
77 };
78
79 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
80 .probe_slot = ricoh_mmc_probe_slot,
81 .resume = ricoh_mmc_resume,
82 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
83 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
84 SDHCI_QUIRK_NO_CARD_NO_RESET |
85 SDHCI_QUIRK_MISSING_CAPS
86 };
87
88 static const struct sdhci_pci_fixes sdhci_ene_712 = {
89 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
90 SDHCI_QUIRK_BROKEN_DMA,
91 };
92
93 static const struct sdhci_pci_fixes sdhci_ene_714 = {
94 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
95 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
96 SDHCI_QUIRK_BROKEN_DMA,
97 };
98
99 static const struct sdhci_pci_fixes sdhci_cafe = {
100 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
101 SDHCI_QUIRK_NO_BUSY_IRQ |
102 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
103 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
104 };
105
106 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
107 {
108 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
109 return 0;
110 }
111
112 /*
113 * ADMA operation is disabled for Moorestown platform due to
114 * hardware bugs.
115 */
116 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
117 {
118 /*
119 * slots number is fixed here for MRST as SDIO3/5 are never used and
120 * have hardware bugs.
121 */
122 chip->num_slots = 1;
123 return 0;
124 }
125
126 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
127 {
128 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
129 return 0;
130 }
131
132 #ifdef CONFIG_PM_RUNTIME
133
134 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
135 {
136 struct sdhci_pci_slot *slot = dev_id;
137 struct sdhci_host *host = slot->host;
138
139 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
140 return IRQ_HANDLED;
141 }
142
143 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
144 {
145 int err, irq, gpio = slot->cd_gpio;
146
147 slot->cd_gpio = -EINVAL;
148 slot->cd_irq = -EINVAL;
149
150 if (!gpio_is_valid(gpio))
151 return;
152
153 err = gpio_request(gpio, "sd_cd");
154 if (err < 0)
155 goto out;
156
157 err = gpio_direction_input(gpio);
158 if (err < 0)
159 goto out_free;
160
161 irq = gpio_to_irq(gpio);
162 if (irq < 0)
163 goto out_free;
164
165 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
166 IRQF_TRIGGER_FALLING, "sd_cd", slot);
167 if (err)
168 goto out_free;
169
170 slot->cd_gpio = gpio;
171 slot->cd_irq = irq;
172
173 return;
174
175 out_free:
176 gpio_free(gpio);
177 out:
178 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
179 }
180
181 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
182 {
183 if (slot->cd_irq >= 0)
184 free_irq(slot->cd_irq, slot);
185 if (gpio_is_valid(slot->cd_gpio))
186 gpio_free(slot->cd_gpio);
187 }
188
189 #else
190
191 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
192 {
193 }
194
195 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
196 {
197 }
198
199 #endif
200
201 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
202 {
203 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
204 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
205 MMC_CAP2_HC_ERASE_SZ;
206 return 0;
207 }
208
209 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
210 {
211 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
212 return 0;
213 }
214
215 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
216 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
217 .probe_slot = mrst_hc_probe_slot,
218 };
219
220 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
221 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
222 .probe = mrst_hc_probe,
223 };
224
225 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
226 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
227 .allow_runtime_pm = true,
228 .own_cd_for_runtime_pm = true,
229 };
230
231 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
232 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
233 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
234 .allow_runtime_pm = true,
235 .probe_slot = mfd_sdio_probe_slot,
236 };
237
238 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
239 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
240 .allow_runtime_pm = true,
241 .probe_slot = mfd_emmc_probe_slot,
242 };
243
244 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
245 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
246 .probe_slot = pch_hc_probe_slot,
247 };
248
249 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
250 {
251 u8 reg;
252
253 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
254 reg |= 0x10;
255 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
256 /* For eMMC, minimum is 1us but give it 9us for good measure */
257 udelay(9);
258 reg &= ~0x10;
259 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
260 /* For eMMC, minimum is 200us but give it 300us for good measure */
261 usleep_range(300, 1000);
262 }
263
264 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
265 {
266 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
267 MMC_CAP_HW_RESET;
268 slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
269 slot->hw_reset = sdhci_pci_int_hw_reset;
270 return 0;
271 }
272
273 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
274 {
275 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
276 return 0;
277 }
278
279 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
280 .allow_runtime_pm = true,
281 .probe_slot = byt_emmc_probe_slot,
282 };
283
284 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
285 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
286 .allow_runtime_pm = true,
287 .probe_slot = byt_sdio_probe_slot,
288 };
289
290 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
291 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON,
292 .allow_runtime_pm = true,
293 .own_cd_for_runtime_pm = true,
294 };
295
296 /* Define Host controllers for Intel Merrifield platform */
297 #define INTEL_MRFL_EMMC_0 0
298 #define INTEL_MRFL_EMMC_1 1
299
300 static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot)
301 {
302 if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_0) &&
303 (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_1))
304 /* SD support is not ready yet */
305 return -ENODEV;
306
307 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
308 MMC_CAP_1_8V_DDR;
309
310 return 0;
311 }
312
313 static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = {
314 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
315 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200,
316 .probe_slot = intel_mrfl_mmc_probe_slot,
317 };
318
319 /* O2Micro extra registers */
320 #define O2_SD_LOCK_WP 0xD3
321 #define O2_SD_MULTI_VCC3V 0xEE
322 #define O2_SD_CLKREQ 0xEC
323 #define O2_SD_CAPS 0xE0
324 #define O2_SD_ADMA1 0xE2
325 #define O2_SD_ADMA2 0xE7
326 #define O2_SD_INF_MOD 0xF1
327
328 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
329 {
330 u8 scratch;
331 int ret;
332
333 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
334 if (ret)
335 return ret;
336
337 /*
338 * Turn PMOS on [bit 0], set over current detection to 2.4 V
339 * [bit 1:2] and enable over current debouncing [bit 6].
340 */
341 if (on)
342 scratch |= 0x47;
343 else
344 scratch &= ~0x47;
345
346 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
347 if (ret)
348 return ret;
349
350 return 0;
351 }
352
353 static int jmicron_probe(struct sdhci_pci_chip *chip)
354 {
355 int ret;
356 u16 mmcdev = 0;
357
358 if (chip->pdev->revision == 0) {
359 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
360 SDHCI_QUIRK_32BIT_DMA_SIZE |
361 SDHCI_QUIRK_32BIT_ADMA_SIZE |
362 SDHCI_QUIRK_RESET_AFTER_REQUEST |
363 SDHCI_QUIRK_BROKEN_SMALL_PIO;
364 }
365
366 /*
367 * JMicron chips can have two interfaces to the same hardware
368 * in order to work around limitations in Microsoft's driver.
369 * We need to make sure we only bind to one of them.
370 *
371 * This code assumes two things:
372 *
373 * 1. The PCI code adds subfunctions in order.
374 *
375 * 2. The MMC interface has a lower subfunction number
376 * than the SD interface.
377 */
378 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
379 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
380 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
381 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
382
383 if (mmcdev) {
384 struct pci_dev *sd_dev;
385
386 sd_dev = NULL;
387 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
388 mmcdev, sd_dev)) != NULL) {
389 if ((PCI_SLOT(chip->pdev->devfn) ==
390 PCI_SLOT(sd_dev->devfn)) &&
391 (chip->pdev->bus == sd_dev->bus))
392 break;
393 }
394
395 if (sd_dev) {
396 pci_dev_put(sd_dev);
397 dev_info(&chip->pdev->dev, "Refusing to bind to "
398 "secondary interface.\n");
399 return -ENODEV;
400 }
401 }
402
403 /*
404 * JMicron chips need a bit of a nudge to enable the power
405 * output pins.
406 */
407 ret = jmicron_pmos(chip, 1);
408 if (ret) {
409 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
410 return ret;
411 }
412
413 /* quirk for unsable RO-detection on JM388 chips */
414 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
415 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
416 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
417
418 return 0;
419 }
420
421 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
422 {
423 u8 scratch;
424
425 scratch = readb(host->ioaddr + 0xC0);
426
427 if (on)
428 scratch |= 0x01;
429 else
430 scratch &= ~0x01;
431
432 writeb(scratch, host->ioaddr + 0xC0);
433 }
434
435 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
436 {
437 if (slot->chip->pdev->revision == 0) {
438 u16 version;
439
440 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
441 version = (version & SDHCI_VENDOR_VER_MASK) >>
442 SDHCI_VENDOR_VER_SHIFT;
443
444 /*
445 * Older versions of the chip have lots of nasty glitches
446 * in the ADMA engine. It's best just to avoid it
447 * completely.
448 */
449 if (version < 0xAC)
450 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
451 }
452
453 /* JM388 MMC doesn't support 1.8V while SD supports it */
454 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
455 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
456 MMC_VDD_29_30 | MMC_VDD_30_31 |
457 MMC_VDD_165_195; /* allow 1.8V */
458 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
459 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
460 }
461
462 /*
463 * The secondary interface requires a bit set to get the
464 * interrupts.
465 */
466 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
467 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
468 jmicron_enable_mmc(slot->host, 1);
469
470 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
471
472 return 0;
473 }
474
475 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
476 {
477 if (dead)
478 return;
479
480 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
481 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
482 jmicron_enable_mmc(slot->host, 0);
483 }
484
485 static int jmicron_suspend(struct sdhci_pci_chip *chip)
486 {
487 int i;
488
489 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
490 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
491 for (i = 0; i < chip->num_slots; i++)
492 jmicron_enable_mmc(chip->slots[i]->host, 0);
493 }
494
495 return 0;
496 }
497
498 static int jmicron_resume(struct sdhci_pci_chip *chip)
499 {
500 int ret, i;
501
502 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
503 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
504 for (i = 0; i < chip->num_slots; i++)
505 jmicron_enable_mmc(chip->slots[i]->host, 1);
506 }
507
508 ret = jmicron_pmos(chip, 1);
509 if (ret) {
510 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
511 return ret;
512 }
513
514 return 0;
515 }
516
517 static const struct sdhci_pci_fixes sdhci_o2 = {
518 .probe = sdhci_pci_o2_probe,
519 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
520 .probe_slot = sdhci_pci_o2_probe_slot,
521 .resume = sdhci_pci_o2_resume,
522 };
523
524 static const struct sdhci_pci_fixes sdhci_jmicron = {
525 .probe = jmicron_probe,
526
527 .probe_slot = jmicron_probe_slot,
528 .remove_slot = jmicron_remove_slot,
529
530 .suspend = jmicron_suspend,
531 .resume = jmicron_resume,
532 };
533
534 /* SysKonnect CardBus2SDIO extra registers */
535 #define SYSKT_CTRL 0x200
536 #define SYSKT_RDFIFO_STAT 0x204
537 #define SYSKT_WRFIFO_STAT 0x208
538 #define SYSKT_POWER_DATA 0x20c
539 #define SYSKT_POWER_330 0xef
540 #define SYSKT_POWER_300 0xf8
541 #define SYSKT_POWER_184 0xcc
542 #define SYSKT_POWER_CMD 0x20d
543 #define SYSKT_POWER_START (1 << 7)
544 #define SYSKT_POWER_STATUS 0x20e
545 #define SYSKT_POWER_STATUS_OK (1 << 0)
546 #define SYSKT_BOARD_REV 0x210
547 #define SYSKT_CHIP_REV 0x211
548 #define SYSKT_CONF_DATA 0x212
549 #define SYSKT_CONF_DATA_1V8 (1 << 2)
550 #define SYSKT_CONF_DATA_2V5 (1 << 1)
551 #define SYSKT_CONF_DATA_3V3 (1 << 0)
552
553 static int syskt_probe(struct sdhci_pci_chip *chip)
554 {
555 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
556 chip->pdev->class &= ~0x0000FF;
557 chip->pdev->class |= PCI_SDHCI_IFDMA;
558 }
559 return 0;
560 }
561
562 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
563 {
564 int tm, ps;
565
566 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
567 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
568 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
569 "board rev %d.%d, chip rev %d.%d\n",
570 board_rev >> 4, board_rev & 0xf,
571 chip_rev >> 4, chip_rev & 0xf);
572 if (chip_rev >= 0x20)
573 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
574
575 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
576 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
577 udelay(50);
578 tm = 10; /* Wait max 1 ms */
579 do {
580 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
581 if (ps & SYSKT_POWER_STATUS_OK)
582 break;
583 udelay(100);
584 } while (--tm);
585 if (!tm) {
586 dev_err(&slot->chip->pdev->dev,
587 "power regulator never stabilized");
588 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
589 return -ENODEV;
590 }
591
592 return 0;
593 }
594
595 static const struct sdhci_pci_fixes sdhci_syskt = {
596 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
597 .probe = syskt_probe,
598 .probe_slot = syskt_probe_slot,
599 };
600
601 static int via_probe(struct sdhci_pci_chip *chip)
602 {
603 if (chip->pdev->revision == 0x10)
604 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
605
606 return 0;
607 }
608
609 static const struct sdhci_pci_fixes sdhci_via = {
610 .probe = via_probe,
611 };
612
613 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
614 {
615 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
616 return 0;
617 }
618
619 static const struct sdhci_pci_fixes sdhci_rtsx = {
620 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
621 SDHCI_QUIRK2_BROKEN_DDR50,
622 .probe_slot = rtsx_probe_slot,
623 };
624
625 static const struct pci_device_id pci_ids[] = {
626 {
627 .vendor = PCI_VENDOR_ID_RICOH,
628 .device = PCI_DEVICE_ID_RICOH_R5C822,
629 .subvendor = PCI_ANY_ID,
630 .subdevice = PCI_ANY_ID,
631 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
632 },
633
634 {
635 .vendor = PCI_VENDOR_ID_RICOH,
636 .device = 0x843,
637 .subvendor = PCI_ANY_ID,
638 .subdevice = PCI_ANY_ID,
639 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
640 },
641
642 {
643 .vendor = PCI_VENDOR_ID_RICOH,
644 .device = 0xe822,
645 .subvendor = PCI_ANY_ID,
646 .subdevice = PCI_ANY_ID,
647 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
648 },
649
650 {
651 .vendor = PCI_VENDOR_ID_RICOH,
652 .device = 0xe823,
653 .subvendor = PCI_ANY_ID,
654 .subdevice = PCI_ANY_ID,
655 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
656 },
657
658 {
659 .vendor = PCI_VENDOR_ID_ENE,
660 .device = PCI_DEVICE_ID_ENE_CB712_SD,
661 .subvendor = PCI_ANY_ID,
662 .subdevice = PCI_ANY_ID,
663 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
664 },
665
666 {
667 .vendor = PCI_VENDOR_ID_ENE,
668 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
669 .subvendor = PCI_ANY_ID,
670 .subdevice = PCI_ANY_ID,
671 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
672 },
673
674 {
675 .vendor = PCI_VENDOR_ID_ENE,
676 .device = PCI_DEVICE_ID_ENE_CB714_SD,
677 .subvendor = PCI_ANY_ID,
678 .subdevice = PCI_ANY_ID,
679 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
680 },
681
682 {
683 .vendor = PCI_VENDOR_ID_ENE,
684 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
685 .subvendor = PCI_ANY_ID,
686 .subdevice = PCI_ANY_ID,
687 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
688 },
689
690 {
691 .vendor = PCI_VENDOR_ID_MARVELL,
692 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
693 .subvendor = PCI_ANY_ID,
694 .subdevice = PCI_ANY_ID,
695 .driver_data = (kernel_ulong_t)&sdhci_cafe,
696 },
697
698 {
699 .vendor = PCI_VENDOR_ID_JMICRON,
700 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
701 .subvendor = PCI_ANY_ID,
702 .subdevice = PCI_ANY_ID,
703 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
704 },
705
706 {
707 .vendor = PCI_VENDOR_ID_JMICRON,
708 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
709 .subvendor = PCI_ANY_ID,
710 .subdevice = PCI_ANY_ID,
711 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
712 },
713
714 {
715 .vendor = PCI_VENDOR_ID_JMICRON,
716 .device = PCI_DEVICE_ID_JMICRON_JMB388_SD,
717 .subvendor = PCI_ANY_ID,
718 .subdevice = PCI_ANY_ID,
719 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
720 },
721
722 {
723 .vendor = PCI_VENDOR_ID_JMICRON,
724 .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD,
725 .subvendor = PCI_ANY_ID,
726 .subdevice = PCI_ANY_ID,
727 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
728 },
729
730 {
731 .vendor = PCI_VENDOR_ID_SYSKONNECT,
732 .device = 0x8000,
733 .subvendor = PCI_ANY_ID,
734 .subdevice = PCI_ANY_ID,
735 .driver_data = (kernel_ulong_t)&sdhci_syskt,
736 },
737
738 {
739 .vendor = PCI_VENDOR_ID_VIA,
740 .device = 0x95d0,
741 .subvendor = PCI_ANY_ID,
742 .subdevice = PCI_ANY_ID,
743 .driver_data = (kernel_ulong_t)&sdhci_via,
744 },
745
746 {
747 .vendor = PCI_VENDOR_ID_REALTEK,
748 .device = 0x5250,
749 .subvendor = PCI_ANY_ID,
750 .subdevice = PCI_ANY_ID,
751 .driver_data = (kernel_ulong_t)&sdhci_rtsx,
752 },
753
754 {
755 .vendor = PCI_VENDOR_ID_INTEL,
756 .device = PCI_DEVICE_ID_INTEL_MRST_SD0,
757 .subvendor = PCI_ANY_ID,
758 .subdevice = PCI_ANY_ID,
759 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0,
760 },
761
762 {
763 .vendor = PCI_VENDOR_ID_INTEL,
764 .device = PCI_DEVICE_ID_INTEL_MRST_SD1,
765 .subvendor = PCI_ANY_ID,
766 .subdevice = PCI_ANY_ID,
767 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
768 },
769
770 {
771 .vendor = PCI_VENDOR_ID_INTEL,
772 .device = PCI_DEVICE_ID_INTEL_MRST_SD2,
773 .subvendor = PCI_ANY_ID,
774 .subdevice = PCI_ANY_ID,
775 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
776 },
777
778 {
779 .vendor = PCI_VENDOR_ID_INTEL,
780 .device = PCI_DEVICE_ID_INTEL_MFD_SD,
781 .subvendor = PCI_ANY_ID,
782 .subdevice = PCI_ANY_ID,
783 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
784 },
785
786 {
787 .vendor = PCI_VENDOR_ID_INTEL,
788 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1,
789 .subvendor = PCI_ANY_ID,
790 .subdevice = PCI_ANY_ID,
791 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
792 },
793
794 {
795 .vendor = PCI_VENDOR_ID_INTEL,
796 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2,
797 .subvendor = PCI_ANY_ID,
798 .subdevice = PCI_ANY_ID,
799 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
800 },
801
802 {
803 .vendor = PCI_VENDOR_ID_INTEL,
804 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0,
805 .subvendor = PCI_ANY_ID,
806 .subdevice = PCI_ANY_ID,
807 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
808 },
809
810 {
811 .vendor = PCI_VENDOR_ID_INTEL,
812 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1,
813 .subvendor = PCI_ANY_ID,
814 .subdevice = PCI_ANY_ID,
815 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
816 },
817
818 {
819 .vendor = PCI_VENDOR_ID_INTEL,
820 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
821 .subvendor = PCI_ANY_ID,
822 .subdevice = PCI_ANY_ID,
823 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
824 },
825
826 {
827 .vendor = PCI_VENDOR_ID_INTEL,
828 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
829 .subvendor = PCI_ANY_ID,
830 .subdevice = PCI_ANY_ID,
831 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
832 },
833
834 {
835 .vendor = PCI_VENDOR_ID_INTEL,
836 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC,
837 .subvendor = PCI_ANY_ID,
838 .subdevice = PCI_ANY_ID,
839 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
840 },
841
842 {
843 .vendor = PCI_VENDOR_ID_INTEL,
844 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
845 .subvendor = PCI_ANY_ID,
846 .subdevice = PCI_ANY_ID,
847 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
848 },
849
850 {
851 .vendor = PCI_VENDOR_ID_INTEL,
852 .device = PCI_DEVICE_ID_INTEL_BYT_SD,
853 .subvendor = PCI_ANY_ID,
854 .subdevice = PCI_ANY_ID,
855 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
856 },
857
858 {
859 .vendor = PCI_VENDOR_ID_INTEL,
860 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC2,
861 .subvendor = PCI_ANY_ID,
862 .subdevice = PCI_ANY_ID,
863 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
864 },
865
866
867 {
868 .vendor = PCI_VENDOR_ID_INTEL,
869 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO0,
870 .subvendor = PCI_ANY_ID,
871 .subdevice = PCI_ANY_ID,
872 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
873 },
874
875 {
876 .vendor = PCI_VENDOR_ID_INTEL,
877 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO1,
878 .subvendor = PCI_ANY_ID,
879 .subdevice = PCI_ANY_ID,
880 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
881 },
882
883 {
884 .vendor = PCI_VENDOR_ID_INTEL,
885 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO2,
886 .subvendor = PCI_ANY_ID,
887 .subdevice = PCI_ANY_ID,
888 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
889 },
890
891 {
892 .vendor = PCI_VENDOR_ID_INTEL,
893 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC0,
894 .subvendor = PCI_ANY_ID,
895 .subdevice = PCI_ANY_ID,
896 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
897 },
898
899 {
900 .vendor = PCI_VENDOR_ID_INTEL,
901 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC1,
902 .subvendor = PCI_ANY_ID,
903 .subdevice = PCI_ANY_ID,
904 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
905 },
906
907 {
908 .vendor = PCI_VENDOR_ID_INTEL,
909 .device = PCI_DEVICE_ID_INTEL_MRFL_MMC,
910 .subvendor = PCI_ANY_ID,
911 .subdevice = PCI_ANY_ID,
912 .driver_data = (kernel_ulong_t)&sdhci_intel_mrfl_mmc,
913 },
914 {
915 .vendor = PCI_VENDOR_ID_O2,
916 .device = PCI_DEVICE_ID_O2_8120,
917 .subvendor = PCI_ANY_ID,
918 .subdevice = PCI_ANY_ID,
919 .driver_data = (kernel_ulong_t)&sdhci_o2,
920 },
921
922 {
923 .vendor = PCI_VENDOR_ID_O2,
924 .device = PCI_DEVICE_ID_O2_8220,
925 .subvendor = PCI_ANY_ID,
926 .subdevice = PCI_ANY_ID,
927 .driver_data = (kernel_ulong_t)&sdhci_o2,
928 },
929
930 {
931 .vendor = PCI_VENDOR_ID_O2,
932 .device = PCI_DEVICE_ID_O2_8221,
933 .subvendor = PCI_ANY_ID,
934 .subdevice = PCI_ANY_ID,
935 .driver_data = (kernel_ulong_t)&sdhci_o2,
936 },
937
938 {
939 .vendor = PCI_VENDOR_ID_O2,
940 .device = PCI_DEVICE_ID_O2_8320,
941 .subvendor = PCI_ANY_ID,
942 .subdevice = PCI_ANY_ID,
943 .driver_data = (kernel_ulong_t)&sdhci_o2,
944 },
945
946 {
947 .vendor = PCI_VENDOR_ID_O2,
948 .device = PCI_DEVICE_ID_O2_8321,
949 .subvendor = PCI_ANY_ID,
950 .subdevice = PCI_ANY_ID,
951 .driver_data = (kernel_ulong_t)&sdhci_o2,
952 },
953
954 {
955 .vendor = PCI_VENDOR_ID_O2,
956 .device = PCI_DEVICE_ID_O2_FUJIN2,
957 .subvendor = PCI_ANY_ID,
958 .subdevice = PCI_ANY_ID,
959 .driver_data = (kernel_ulong_t)&sdhci_o2,
960 },
961
962 {
963 .vendor = PCI_VENDOR_ID_O2,
964 .device = PCI_DEVICE_ID_O2_SDS0,
965 .subvendor = PCI_ANY_ID,
966 .subdevice = PCI_ANY_ID,
967 .driver_data = (kernel_ulong_t)&sdhci_o2,
968 },
969
970 {
971 .vendor = PCI_VENDOR_ID_O2,
972 .device = PCI_DEVICE_ID_O2_SDS1,
973 .subvendor = PCI_ANY_ID,
974 .subdevice = PCI_ANY_ID,
975 .driver_data = (kernel_ulong_t)&sdhci_o2,
976 },
977
978 {
979 .vendor = PCI_VENDOR_ID_O2,
980 .device = PCI_DEVICE_ID_O2_SEABIRD0,
981 .subvendor = PCI_ANY_ID,
982 .subdevice = PCI_ANY_ID,
983 .driver_data = (kernel_ulong_t)&sdhci_o2,
984 },
985
986 {
987 .vendor = PCI_VENDOR_ID_O2,
988 .device = PCI_DEVICE_ID_O2_SEABIRD1,
989 .subvendor = PCI_ANY_ID,
990 .subdevice = PCI_ANY_ID,
991 .driver_data = (kernel_ulong_t)&sdhci_o2,
992 },
993
994 { /* Generic SD host controller */
995 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
996 },
997
998 { /* end: all zeroes */ },
999 };
1000
1001 MODULE_DEVICE_TABLE(pci, pci_ids);
1002
1003 /*****************************************************************************\
1004 * *
1005 * SDHCI core callbacks *
1006 * *
1007 \*****************************************************************************/
1008
1009 static int sdhci_pci_enable_dma(struct sdhci_host *host)
1010 {
1011 struct sdhci_pci_slot *slot;
1012 struct pci_dev *pdev;
1013 int ret;
1014
1015 slot = sdhci_priv(host);
1016 pdev = slot->chip->pdev;
1017
1018 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1019 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1020 (host->flags & SDHCI_USE_SDMA)) {
1021 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1022 "doesn't fully claim to support it.\n");
1023 }
1024
1025 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1026 if (ret)
1027 return ret;
1028
1029 pci_set_master(pdev);
1030
1031 return 0;
1032 }
1033
1034 static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width)
1035 {
1036 u8 ctrl;
1037
1038 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
1039
1040 switch (width) {
1041 case MMC_BUS_WIDTH_8:
1042 ctrl |= SDHCI_CTRL_8BITBUS;
1043 ctrl &= ~SDHCI_CTRL_4BITBUS;
1044 break;
1045 case MMC_BUS_WIDTH_4:
1046 ctrl |= SDHCI_CTRL_4BITBUS;
1047 ctrl &= ~SDHCI_CTRL_8BITBUS;
1048 break;
1049 default:
1050 ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS);
1051 break;
1052 }
1053
1054 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
1055 }
1056
1057 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1058 {
1059 struct sdhci_pci_slot *slot = sdhci_priv(host);
1060 int rst_n_gpio = slot->rst_n_gpio;
1061
1062 if (!gpio_is_valid(rst_n_gpio))
1063 return;
1064 gpio_set_value_cansleep(rst_n_gpio, 0);
1065 /* For eMMC, minimum is 1us but give it 10us for good measure */
1066 udelay(10);
1067 gpio_set_value_cansleep(rst_n_gpio, 1);
1068 /* For eMMC, minimum is 200us but give it 300us for good measure */
1069 usleep_range(300, 1000);
1070 }
1071
1072 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1073 {
1074 struct sdhci_pci_slot *slot = sdhci_priv(host);
1075
1076 if (slot->hw_reset)
1077 slot->hw_reset(host);
1078 }
1079
1080 static const struct sdhci_ops sdhci_pci_ops = {
1081 .set_clock = sdhci_set_clock,
1082 .enable_dma = sdhci_pci_enable_dma,
1083 .set_bus_width = sdhci_pci_set_bus_width,
1084 .reset = sdhci_reset,
1085 .set_uhs_signaling = sdhci_set_uhs_signaling,
1086 .hw_reset = sdhci_pci_hw_reset,
1087 };
1088
1089 /*****************************************************************************\
1090 * *
1091 * Suspend/resume *
1092 * *
1093 \*****************************************************************************/
1094
1095 #ifdef CONFIG_PM
1096
1097 static int sdhci_pci_suspend(struct device *dev)
1098 {
1099 struct pci_dev *pdev = to_pci_dev(dev);
1100 struct sdhci_pci_chip *chip;
1101 struct sdhci_pci_slot *slot;
1102 mmc_pm_flag_t slot_pm_flags;
1103 mmc_pm_flag_t pm_flags = 0;
1104 int i, ret;
1105
1106 chip = pci_get_drvdata(pdev);
1107 if (!chip)
1108 return 0;
1109
1110 for (i = 0; i < chip->num_slots; i++) {
1111 slot = chip->slots[i];
1112 if (!slot)
1113 continue;
1114
1115 ret = sdhci_suspend_host(slot->host);
1116
1117 if (ret)
1118 goto err_pci_suspend;
1119
1120 slot_pm_flags = slot->host->mmc->pm_flags;
1121 if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1122 sdhci_enable_irq_wakeups(slot->host);
1123
1124 pm_flags |= slot_pm_flags;
1125 }
1126
1127 if (chip->fixes && chip->fixes->suspend) {
1128 ret = chip->fixes->suspend(chip);
1129 if (ret)
1130 goto err_pci_suspend;
1131 }
1132
1133 pci_save_state(pdev);
1134 if (pm_flags & MMC_PM_KEEP_POWER) {
1135 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) {
1136 pci_pme_active(pdev, true);
1137 pci_enable_wake(pdev, PCI_D3hot, 1);
1138 }
1139 pci_set_power_state(pdev, PCI_D3hot);
1140 } else {
1141 pci_enable_wake(pdev, PCI_D3hot, 0);
1142 pci_disable_device(pdev);
1143 pci_set_power_state(pdev, PCI_D3hot);
1144 }
1145
1146 return 0;
1147
1148 err_pci_suspend:
1149 while (--i >= 0)
1150 sdhci_resume_host(chip->slots[i]->host);
1151 return ret;
1152 }
1153
1154 static int sdhci_pci_resume(struct device *dev)
1155 {
1156 struct pci_dev *pdev = to_pci_dev(dev);
1157 struct sdhci_pci_chip *chip;
1158 struct sdhci_pci_slot *slot;
1159 int i, ret;
1160
1161 chip = pci_get_drvdata(pdev);
1162 if (!chip)
1163 return 0;
1164
1165 pci_set_power_state(pdev, PCI_D0);
1166 pci_restore_state(pdev);
1167 ret = pci_enable_device(pdev);
1168 if (ret)
1169 return ret;
1170
1171 if (chip->fixes && chip->fixes->resume) {
1172 ret = chip->fixes->resume(chip);
1173 if (ret)
1174 return ret;
1175 }
1176
1177 for (i = 0; i < chip->num_slots; i++) {
1178 slot = chip->slots[i];
1179 if (!slot)
1180 continue;
1181
1182 ret = sdhci_resume_host(slot->host);
1183 if (ret)
1184 return ret;
1185 }
1186
1187 return 0;
1188 }
1189
1190 #else /* CONFIG_PM */
1191
1192 #define sdhci_pci_suspend NULL
1193 #define sdhci_pci_resume NULL
1194
1195 #endif /* CONFIG_PM */
1196
1197 #ifdef CONFIG_PM_RUNTIME
1198
1199 static int sdhci_pci_runtime_suspend(struct device *dev)
1200 {
1201 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1202 struct sdhci_pci_chip *chip;
1203 struct sdhci_pci_slot *slot;
1204 int i, ret;
1205
1206 chip = pci_get_drvdata(pdev);
1207 if (!chip)
1208 return 0;
1209
1210 for (i = 0; i < chip->num_slots; i++) {
1211 slot = chip->slots[i];
1212 if (!slot)
1213 continue;
1214
1215 ret = sdhci_runtime_suspend_host(slot->host);
1216
1217 if (ret)
1218 goto err_pci_runtime_suspend;
1219 }
1220
1221 if (chip->fixes && chip->fixes->suspend) {
1222 ret = chip->fixes->suspend(chip);
1223 if (ret)
1224 goto err_pci_runtime_suspend;
1225 }
1226
1227 return 0;
1228
1229 err_pci_runtime_suspend:
1230 while (--i >= 0)
1231 sdhci_runtime_resume_host(chip->slots[i]->host);
1232 return ret;
1233 }
1234
1235 static int sdhci_pci_runtime_resume(struct device *dev)
1236 {
1237 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1238 struct sdhci_pci_chip *chip;
1239 struct sdhci_pci_slot *slot;
1240 int i, ret;
1241
1242 chip = pci_get_drvdata(pdev);
1243 if (!chip)
1244 return 0;
1245
1246 if (chip->fixes && chip->fixes->resume) {
1247 ret = chip->fixes->resume(chip);
1248 if (ret)
1249 return ret;
1250 }
1251
1252 for (i = 0; i < chip->num_slots; i++) {
1253 slot = chip->slots[i];
1254 if (!slot)
1255 continue;
1256
1257 ret = sdhci_runtime_resume_host(slot->host);
1258 if (ret)
1259 return ret;
1260 }
1261
1262 return 0;
1263 }
1264
1265 static int sdhci_pci_runtime_idle(struct device *dev)
1266 {
1267 return 0;
1268 }
1269
1270 #else
1271
1272 #define sdhci_pci_runtime_suspend NULL
1273 #define sdhci_pci_runtime_resume NULL
1274 #define sdhci_pci_runtime_idle NULL
1275
1276 #endif
1277
1278 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1279 .suspend = sdhci_pci_suspend,
1280 .resume = sdhci_pci_resume,
1281 .runtime_suspend = sdhci_pci_runtime_suspend,
1282 .runtime_resume = sdhci_pci_runtime_resume,
1283 .runtime_idle = sdhci_pci_runtime_idle,
1284 };
1285
1286 /*****************************************************************************\
1287 * *
1288 * Device probing/removal *
1289 * *
1290 \*****************************************************************************/
1291
1292 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1293 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1294 int slotno)
1295 {
1296 struct sdhci_pci_slot *slot;
1297 struct sdhci_host *host;
1298 int ret, bar = first_bar + slotno;
1299
1300 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1301 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1302 return ERR_PTR(-ENODEV);
1303 }
1304
1305 if (pci_resource_len(pdev, bar) < 0x100) {
1306 dev_err(&pdev->dev, "Invalid iomem size. You may "
1307 "experience problems.\n");
1308 }
1309
1310 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1311 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1312 return ERR_PTR(-ENODEV);
1313 }
1314
1315 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1316 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1317 return ERR_PTR(-ENODEV);
1318 }
1319
1320 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
1321 if (IS_ERR(host)) {
1322 dev_err(&pdev->dev, "cannot allocate host\n");
1323 return ERR_CAST(host);
1324 }
1325
1326 slot = sdhci_priv(host);
1327
1328 slot->chip = chip;
1329 slot->host = host;
1330 slot->pci_bar = bar;
1331 slot->rst_n_gpio = -EINVAL;
1332 slot->cd_gpio = -EINVAL;
1333
1334 /* Retrieve platform data if there is any */
1335 if (*sdhci_pci_get_data)
1336 slot->data = sdhci_pci_get_data(pdev, slotno);
1337
1338 if (slot->data) {
1339 if (slot->data->setup) {
1340 ret = slot->data->setup(slot->data);
1341 if (ret) {
1342 dev_err(&pdev->dev, "platform setup failed\n");
1343 goto free;
1344 }
1345 }
1346 slot->rst_n_gpio = slot->data->rst_n_gpio;
1347 slot->cd_gpio = slot->data->cd_gpio;
1348 }
1349
1350 host->hw_name = "PCI";
1351 host->ops = &sdhci_pci_ops;
1352 host->quirks = chip->quirks;
1353 host->quirks2 = chip->quirks2;
1354
1355 host->irq = pdev->irq;
1356
1357 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
1358 if (ret) {
1359 dev_err(&pdev->dev, "cannot request region\n");
1360 goto cleanup;
1361 }
1362
1363 host->ioaddr = pci_ioremap_bar(pdev, bar);
1364 if (!host->ioaddr) {
1365 dev_err(&pdev->dev, "failed to remap registers\n");
1366 ret = -ENOMEM;
1367 goto release;
1368 }
1369
1370 if (chip->fixes && chip->fixes->probe_slot) {
1371 ret = chip->fixes->probe_slot(slot);
1372 if (ret)
1373 goto unmap;
1374 }
1375
1376 if (gpio_is_valid(slot->rst_n_gpio)) {
1377 if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) {
1378 gpio_direction_output(slot->rst_n_gpio, 1);
1379 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1380 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1381 } else {
1382 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1383 slot->rst_n_gpio = -EINVAL;
1384 }
1385 }
1386
1387 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1388 host->mmc->slotno = slotno;
1389 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1390
1391 ret = sdhci_add_host(host);
1392 if (ret)
1393 goto remove;
1394
1395 sdhci_pci_add_own_cd(slot);
1396
1397 /*
1398 * Check if the chip needs a separate GPIO for card detect to wake up
1399 * from runtime suspend. If it is not there, don't allow runtime PM.
1400 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1401 */
1402 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1403 !gpio_is_valid(slot->cd_gpio))
1404 chip->allow_runtime_pm = false;
1405
1406 return slot;
1407
1408 remove:
1409 if (gpio_is_valid(slot->rst_n_gpio))
1410 gpio_free(slot->rst_n_gpio);
1411
1412 if (chip->fixes && chip->fixes->remove_slot)
1413 chip->fixes->remove_slot(slot, 0);
1414
1415 unmap:
1416 iounmap(host->ioaddr);
1417
1418 release:
1419 pci_release_region(pdev, bar);
1420
1421 cleanup:
1422 if (slot->data && slot->data->cleanup)
1423 slot->data->cleanup(slot->data);
1424
1425 free:
1426 sdhci_free_host(host);
1427
1428 return ERR_PTR(ret);
1429 }
1430
1431 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1432 {
1433 int dead;
1434 u32 scratch;
1435
1436 sdhci_pci_remove_own_cd(slot);
1437
1438 dead = 0;
1439 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1440 if (scratch == (u32)-1)
1441 dead = 1;
1442
1443 sdhci_remove_host(slot->host, dead);
1444
1445 if (gpio_is_valid(slot->rst_n_gpio))
1446 gpio_free(slot->rst_n_gpio);
1447
1448 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1449 slot->chip->fixes->remove_slot(slot, dead);
1450
1451 if (slot->data && slot->data->cleanup)
1452 slot->data->cleanup(slot->data);
1453
1454 pci_release_region(slot->chip->pdev, slot->pci_bar);
1455
1456 sdhci_free_host(slot->host);
1457 }
1458
1459 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1460 {
1461 pm_runtime_put_noidle(dev);
1462 pm_runtime_allow(dev);
1463 pm_runtime_set_autosuspend_delay(dev, 50);
1464 pm_runtime_use_autosuspend(dev);
1465 pm_suspend_ignore_children(dev, 1);
1466 }
1467
1468 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1469 {
1470 pm_runtime_forbid(dev);
1471 pm_runtime_get_noresume(dev);
1472 }
1473
1474 static int sdhci_pci_probe(struct pci_dev *pdev,
1475 const struct pci_device_id *ent)
1476 {
1477 struct sdhci_pci_chip *chip;
1478 struct sdhci_pci_slot *slot;
1479
1480 u8 slots, first_bar;
1481 int ret, i;
1482
1483 BUG_ON(pdev == NULL);
1484 BUG_ON(ent == NULL);
1485
1486 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1487 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1488
1489 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1490 if (ret)
1491 return ret;
1492
1493 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1494 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1495 if (slots == 0)
1496 return -ENODEV;
1497
1498 BUG_ON(slots > MAX_SLOTS);
1499
1500 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1501 if (ret)
1502 return ret;
1503
1504 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1505
1506 if (first_bar > 5) {
1507 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1508 return -ENODEV;
1509 }
1510
1511 ret = pci_enable_device(pdev);
1512 if (ret)
1513 return ret;
1514
1515 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
1516 if (!chip) {
1517 ret = -ENOMEM;
1518 goto err;
1519 }
1520
1521 chip->pdev = pdev;
1522 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1523 if (chip->fixes) {
1524 chip->quirks = chip->fixes->quirks;
1525 chip->quirks2 = chip->fixes->quirks2;
1526 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1527 }
1528 chip->num_slots = slots;
1529
1530 pci_set_drvdata(pdev, chip);
1531
1532 if (chip->fixes && chip->fixes->probe) {
1533 ret = chip->fixes->probe(chip);
1534 if (ret)
1535 goto free;
1536 }
1537
1538 slots = chip->num_slots; /* Quirk may have changed this */
1539
1540 for (i = 0; i < slots; i++) {
1541 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1542 if (IS_ERR(slot)) {
1543 for (i--; i >= 0; i--)
1544 sdhci_pci_remove_slot(chip->slots[i]);
1545 ret = PTR_ERR(slot);
1546 goto free;
1547 }
1548
1549 chip->slots[i] = slot;
1550 }
1551
1552 if (chip->allow_runtime_pm)
1553 sdhci_pci_runtime_pm_allow(&pdev->dev);
1554
1555 return 0;
1556
1557 free:
1558 pci_set_drvdata(pdev, NULL);
1559 kfree(chip);
1560
1561 err:
1562 pci_disable_device(pdev);
1563 return ret;
1564 }
1565
1566 static void sdhci_pci_remove(struct pci_dev *pdev)
1567 {
1568 int i;
1569 struct sdhci_pci_chip *chip;
1570
1571 chip = pci_get_drvdata(pdev);
1572
1573 if (chip) {
1574 if (chip->allow_runtime_pm)
1575 sdhci_pci_runtime_pm_forbid(&pdev->dev);
1576
1577 for (i = 0; i < chip->num_slots; i++)
1578 sdhci_pci_remove_slot(chip->slots[i]);
1579
1580 pci_set_drvdata(pdev, NULL);
1581 kfree(chip);
1582 }
1583
1584 pci_disable_device(pdev);
1585 }
1586
1587 static struct pci_driver sdhci_driver = {
1588 .name = "sdhci-pci",
1589 .id_table = pci_ids,
1590 .probe = sdhci_pci_probe,
1591 .remove = sdhci_pci_remove,
1592 .driver = {
1593 .pm = &sdhci_pci_pm_ops
1594 },
1595 };
1596
1597 module_pci_driver(sdhci_driver);
1598
1599 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1600 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
1601 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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