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mmc: sdhci-pci: Add SDIO/MMC device ID support for Intel Clovertrail
[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
31 /*
32 * PCI device IDs
33 */
34 #define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809
35 #define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a
36 #define PCI_DEVICE_ID_INTEL_BYT_EMMC 0x0f14
37 #define PCI_DEVICE_ID_INTEL_BYT_SDIO 0x0f15
38 #define PCI_DEVICE_ID_INTEL_BYT_SD 0x0f16
39 #define PCI_DEVICE_ID_INTEL_BYT_EMMC2 0x0f50
40 #define PCI_DEVICE_ID_INTEL_MRFL_MMC 0x1190
41 #define PCI_DEVICE_ID_INTEL_CLV_SDIO0 0x08f9
42 #define PCI_DEVICE_ID_INTEL_CLV_SDIO1 0x08fa
43 #define PCI_DEVICE_ID_INTEL_CLV_SDIO2 0x08fb
44 #define PCI_DEVICE_ID_INTEL_CLV_EMMC0 0x08e5
45 #define PCI_DEVICE_ID_INTEL_CLV_EMMC1 0x08e6
46
47 /*
48 * PCI registers
49 */
50
51 #define PCI_SDHCI_IFPIO 0x00
52 #define PCI_SDHCI_IFDMA 0x01
53 #define PCI_SDHCI_IFVENDOR 0x02
54
55 #define PCI_SLOT_INFO 0x40 /* 8 bits */
56 #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
57 #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
58
59 #define MAX_SLOTS 8
60
61 struct sdhci_pci_chip;
62 struct sdhci_pci_slot;
63
64 struct sdhci_pci_fixes {
65 unsigned int quirks;
66 unsigned int quirks2;
67 bool allow_runtime_pm;
68
69 int (*probe) (struct sdhci_pci_chip *);
70
71 int (*probe_slot) (struct sdhci_pci_slot *);
72 void (*remove_slot) (struct sdhci_pci_slot *, int);
73
74 int (*suspend) (struct sdhci_pci_chip *);
75 int (*resume) (struct sdhci_pci_chip *);
76 };
77
78 struct sdhci_pci_slot {
79 struct sdhci_pci_chip *chip;
80 struct sdhci_host *host;
81 struct sdhci_pci_data *data;
82
83 int pci_bar;
84 int rst_n_gpio;
85 int cd_gpio;
86 int cd_irq;
87
88 void (*hw_reset)(struct sdhci_host *host);
89 };
90
91 struct sdhci_pci_chip {
92 struct pci_dev *pdev;
93
94 unsigned int quirks;
95 unsigned int quirks2;
96 bool allow_runtime_pm;
97 const struct sdhci_pci_fixes *fixes;
98
99 int num_slots; /* Slots on controller */
100 struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
101 };
102
103
104 /*****************************************************************************\
105 * *
106 * Hardware specific quirk handling *
107 * *
108 \*****************************************************************************/
109
110 static int ricoh_probe(struct sdhci_pci_chip *chip)
111 {
112 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
113 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
114 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
115 return 0;
116 }
117
118 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
119 {
120 slot->host->caps =
121 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
122 & SDHCI_TIMEOUT_CLK_MASK) |
123
124 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
125 & SDHCI_CLOCK_BASE_MASK) |
126
127 SDHCI_TIMEOUT_CLK_UNIT |
128 SDHCI_CAN_VDD_330 |
129 SDHCI_CAN_DO_HISPD |
130 SDHCI_CAN_DO_SDMA;
131 return 0;
132 }
133
134 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
135 {
136 /* Apply a delay to allow controller to settle */
137 /* Otherwise it becomes confused if card state changed
138 during suspend */
139 msleep(500);
140 return 0;
141 }
142
143 static const struct sdhci_pci_fixes sdhci_ricoh = {
144 .probe = ricoh_probe,
145 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
146 SDHCI_QUIRK_FORCE_DMA |
147 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
148 };
149
150 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
151 .probe_slot = ricoh_mmc_probe_slot,
152 .resume = ricoh_mmc_resume,
153 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
154 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
155 SDHCI_QUIRK_NO_CARD_NO_RESET |
156 SDHCI_QUIRK_MISSING_CAPS
157 };
158
159 static const struct sdhci_pci_fixes sdhci_ene_712 = {
160 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
161 SDHCI_QUIRK_BROKEN_DMA,
162 };
163
164 static const struct sdhci_pci_fixes sdhci_ene_714 = {
165 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
166 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
167 SDHCI_QUIRK_BROKEN_DMA,
168 };
169
170 static const struct sdhci_pci_fixes sdhci_cafe = {
171 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
172 SDHCI_QUIRK_NO_BUSY_IRQ |
173 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
174 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
175 };
176
177 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
178 {
179 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
180 return 0;
181 }
182
183 /*
184 * ADMA operation is disabled for Moorestown platform due to
185 * hardware bugs.
186 */
187 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
188 {
189 /*
190 * slots number is fixed here for MRST as SDIO3/5 are never used and
191 * have hardware bugs.
192 */
193 chip->num_slots = 1;
194 return 0;
195 }
196
197 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
198 {
199 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
200 return 0;
201 }
202
203 #ifdef CONFIG_PM_RUNTIME
204
205 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
206 {
207 struct sdhci_pci_slot *slot = dev_id;
208 struct sdhci_host *host = slot->host;
209
210 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
211 return IRQ_HANDLED;
212 }
213
214 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
215 {
216 int err, irq, gpio = slot->cd_gpio;
217
218 slot->cd_gpio = -EINVAL;
219 slot->cd_irq = -EINVAL;
220
221 if (!gpio_is_valid(gpio))
222 return;
223
224 err = gpio_request(gpio, "sd_cd");
225 if (err < 0)
226 goto out;
227
228 err = gpio_direction_input(gpio);
229 if (err < 0)
230 goto out_free;
231
232 irq = gpio_to_irq(gpio);
233 if (irq < 0)
234 goto out_free;
235
236 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
237 IRQF_TRIGGER_FALLING, "sd_cd", slot);
238 if (err)
239 goto out_free;
240
241 slot->cd_gpio = gpio;
242 slot->cd_irq = irq;
243
244 return;
245
246 out_free:
247 gpio_free(gpio);
248 out:
249 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
250 }
251
252 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
253 {
254 if (slot->cd_irq >= 0)
255 free_irq(slot->cd_irq, slot);
256 if (gpio_is_valid(slot->cd_gpio))
257 gpio_free(slot->cd_gpio);
258 }
259
260 #else
261
262 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
263 {
264 }
265
266 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
267 {
268 }
269
270 #endif
271
272 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
273 {
274 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
275 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
276 MMC_CAP2_HC_ERASE_SZ;
277 return 0;
278 }
279
280 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
281 {
282 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
283 return 0;
284 }
285
286 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
287 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
288 .probe_slot = mrst_hc_probe_slot,
289 };
290
291 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
292 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
293 .probe = mrst_hc_probe,
294 };
295
296 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
297 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
298 .allow_runtime_pm = true,
299 };
300
301 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
302 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
303 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
304 .allow_runtime_pm = true,
305 .probe_slot = mfd_sdio_probe_slot,
306 };
307
308 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
309 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
310 .allow_runtime_pm = true,
311 .probe_slot = mfd_emmc_probe_slot,
312 };
313
314 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
315 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
316 .probe_slot = pch_hc_probe_slot,
317 };
318
319 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
320 {
321 u8 reg;
322
323 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
324 reg |= 0x10;
325 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
326 /* For eMMC, minimum is 1us but give it 9us for good measure */
327 udelay(9);
328 reg &= ~0x10;
329 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
330 /* For eMMC, minimum is 200us but give it 300us for good measure */
331 usleep_range(300, 1000);
332 }
333
334 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
335 {
336 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
337 MMC_CAP_HW_RESET;
338 slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
339 slot->hw_reset = sdhci_pci_int_hw_reset;
340 return 0;
341 }
342
343 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
344 {
345 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
346 return 0;
347 }
348
349 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
350 .allow_runtime_pm = true,
351 .probe_slot = byt_emmc_probe_slot,
352 };
353
354 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
355 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
356 .allow_runtime_pm = true,
357 .probe_slot = byt_sdio_probe_slot,
358 };
359
360 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
361 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON,
362 .allow_runtime_pm = true,
363 };
364
365 /* Define Host controllers for Intel Merrifield platform */
366 #define INTEL_MRFL_EMMC_0 0
367 #define INTEL_MRFL_EMMC_1 1
368
369 static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot)
370 {
371 if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_0) &&
372 (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_1))
373 /* SD support is not ready yet */
374 return -ENODEV;
375
376 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
377 MMC_CAP_1_8V_DDR;
378
379 return 0;
380 }
381
382 static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = {
383 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
384 .probe_slot = intel_mrfl_mmc_probe_slot,
385 };
386
387 /* O2Micro extra registers */
388 #define O2_SD_LOCK_WP 0xD3
389 #define O2_SD_MULTI_VCC3V 0xEE
390 #define O2_SD_CLKREQ 0xEC
391 #define O2_SD_CAPS 0xE0
392 #define O2_SD_ADMA1 0xE2
393 #define O2_SD_ADMA2 0xE7
394 #define O2_SD_INF_MOD 0xF1
395
396 static int o2_probe(struct sdhci_pci_chip *chip)
397 {
398 int ret;
399 u8 scratch;
400
401 switch (chip->pdev->device) {
402 case PCI_DEVICE_ID_O2_8220:
403 case PCI_DEVICE_ID_O2_8221:
404 case PCI_DEVICE_ID_O2_8320:
405 case PCI_DEVICE_ID_O2_8321:
406 /* This extra setup is required due to broken ADMA. */
407 ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch);
408 if (ret)
409 return ret;
410 scratch &= 0x7f;
411 pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
412
413 /* Set Multi 3 to VCC3V# */
414 pci_write_config_byte(chip->pdev, O2_SD_MULTI_VCC3V, 0x08);
415
416 /* Disable CLK_REQ# support after media DET */
417 ret = pci_read_config_byte(chip->pdev, O2_SD_CLKREQ, &scratch);
418 if (ret)
419 return ret;
420 scratch |= 0x20;
421 pci_write_config_byte(chip->pdev, O2_SD_CLKREQ, scratch);
422
423 /* Choose capabilities, enable SDMA. We have to write 0x01
424 * to the capabilities register first to unlock it.
425 */
426 ret = pci_read_config_byte(chip->pdev, O2_SD_CAPS, &scratch);
427 if (ret)
428 return ret;
429 scratch |= 0x01;
430 pci_write_config_byte(chip->pdev, O2_SD_CAPS, scratch);
431 pci_write_config_byte(chip->pdev, O2_SD_CAPS, 0x73);
432
433 /* Disable ADMA1/2 */
434 pci_write_config_byte(chip->pdev, O2_SD_ADMA1, 0x39);
435 pci_write_config_byte(chip->pdev, O2_SD_ADMA2, 0x08);
436
437 /* Disable the infinite transfer mode */
438 ret = pci_read_config_byte(chip->pdev, O2_SD_INF_MOD, &scratch);
439 if (ret)
440 return ret;
441 scratch |= 0x08;
442 pci_write_config_byte(chip->pdev, O2_SD_INF_MOD, scratch);
443
444 /* Lock WP */
445 ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch);
446 if (ret)
447 return ret;
448 scratch |= 0x80;
449 pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
450 }
451
452 return 0;
453 }
454
455 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
456 {
457 u8 scratch;
458 int ret;
459
460 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
461 if (ret)
462 return ret;
463
464 /*
465 * Turn PMOS on [bit 0], set over current detection to 2.4 V
466 * [bit 1:2] and enable over current debouncing [bit 6].
467 */
468 if (on)
469 scratch |= 0x47;
470 else
471 scratch &= ~0x47;
472
473 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
474 if (ret)
475 return ret;
476
477 return 0;
478 }
479
480 static int jmicron_probe(struct sdhci_pci_chip *chip)
481 {
482 int ret;
483 u16 mmcdev = 0;
484
485 if (chip->pdev->revision == 0) {
486 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
487 SDHCI_QUIRK_32BIT_DMA_SIZE |
488 SDHCI_QUIRK_32BIT_ADMA_SIZE |
489 SDHCI_QUIRK_RESET_AFTER_REQUEST |
490 SDHCI_QUIRK_BROKEN_SMALL_PIO;
491 }
492
493 /*
494 * JMicron chips can have two interfaces to the same hardware
495 * in order to work around limitations in Microsoft's driver.
496 * We need to make sure we only bind to one of them.
497 *
498 * This code assumes two things:
499 *
500 * 1. The PCI code adds subfunctions in order.
501 *
502 * 2. The MMC interface has a lower subfunction number
503 * than the SD interface.
504 */
505 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
506 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
507 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
508 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
509
510 if (mmcdev) {
511 struct pci_dev *sd_dev;
512
513 sd_dev = NULL;
514 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
515 mmcdev, sd_dev)) != NULL) {
516 if ((PCI_SLOT(chip->pdev->devfn) ==
517 PCI_SLOT(sd_dev->devfn)) &&
518 (chip->pdev->bus == sd_dev->bus))
519 break;
520 }
521
522 if (sd_dev) {
523 pci_dev_put(sd_dev);
524 dev_info(&chip->pdev->dev, "Refusing to bind to "
525 "secondary interface.\n");
526 return -ENODEV;
527 }
528 }
529
530 /*
531 * JMicron chips need a bit of a nudge to enable the power
532 * output pins.
533 */
534 ret = jmicron_pmos(chip, 1);
535 if (ret) {
536 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
537 return ret;
538 }
539
540 /* quirk for unsable RO-detection on JM388 chips */
541 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
542 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
543 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
544
545 return 0;
546 }
547
548 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
549 {
550 u8 scratch;
551
552 scratch = readb(host->ioaddr + 0xC0);
553
554 if (on)
555 scratch |= 0x01;
556 else
557 scratch &= ~0x01;
558
559 writeb(scratch, host->ioaddr + 0xC0);
560 }
561
562 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
563 {
564 if (slot->chip->pdev->revision == 0) {
565 u16 version;
566
567 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
568 version = (version & SDHCI_VENDOR_VER_MASK) >>
569 SDHCI_VENDOR_VER_SHIFT;
570
571 /*
572 * Older versions of the chip have lots of nasty glitches
573 * in the ADMA engine. It's best just to avoid it
574 * completely.
575 */
576 if (version < 0xAC)
577 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
578 }
579
580 /* JM388 MMC doesn't support 1.8V while SD supports it */
581 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
582 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
583 MMC_VDD_29_30 | MMC_VDD_30_31 |
584 MMC_VDD_165_195; /* allow 1.8V */
585 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
586 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
587 }
588
589 /*
590 * The secondary interface requires a bit set to get the
591 * interrupts.
592 */
593 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
594 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
595 jmicron_enable_mmc(slot->host, 1);
596
597 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
598
599 return 0;
600 }
601
602 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
603 {
604 if (dead)
605 return;
606
607 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
608 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
609 jmicron_enable_mmc(slot->host, 0);
610 }
611
612 static int jmicron_suspend(struct sdhci_pci_chip *chip)
613 {
614 int i;
615
616 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
617 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
618 for (i = 0; i < chip->num_slots; i++)
619 jmicron_enable_mmc(chip->slots[i]->host, 0);
620 }
621
622 return 0;
623 }
624
625 static int jmicron_resume(struct sdhci_pci_chip *chip)
626 {
627 int ret, i;
628
629 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
630 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
631 for (i = 0; i < chip->num_slots; i++)
632 jmicron_enable_mmc(chip->slots[i]->host, 1);
633 }
634
635 ret = jmicron_pmos(chip, 1);
636 if (ret) {
637 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
638 return ret;
639 }
640
641 return 0;
642 }
643
644 static const struct sdhci_pci_fixes sdhci_o2 = {
645 .probe = o2_probe,
646 };
647
648 static const struct sdhci_pci_fixes sdhci_jmicron = {
649 .probe = jmicron_probe,
650
651 .probe_slot = jmicron_probe_slot,
652 .remove_slot = jmicron_remove_slot,
653
654 .suspend = jmicron_suspend,
655 .resume = jmicron_resume,
656 };
657
658 /* SysKonnect CardBus2SDIO extra registers */
659 #define SYSKT_CTRL 0x200
660 #define SYSKT_RDFIFO_STAT 0x204
661 #define SYSKT_WRFIFO_STAT 0x208
662 #define SYSKT_POWER_DATA 0x20c
663 #define SYSKT_POWER_330 0xef
664 #define SYSKT_POWER_300 0xf8
665 #define SYSKT_POWER_184 0xcc
666 #define SYSKT_POWER_CMD 0x20d
667 #define SYSKT_POWER_START (1 << 7)
668 #define SYSKT_POWER_STATUS 0x20e
669 #define SYSKT_POWER_STATUS_OK (1 << 0)
670 #define SYSKT_BOARD_REV 0x210
671 #define SYSKT_CHIP_REV 0x211
672 #define SYSKT_CONF_DATA 0x212
673 #define SYSKT_CONF_DATA_1V8 (1 << 2)
674 #define SYSKT_CONF_DATA_2V5 (1 << 1)
675 #define SYSKT_CONF_DATA_3V3 (1 << 0)
676
677 static int syskt_probe(struct sdhci_pci_chip *chip)
678 {
679 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
680 chip->pdev->class &= ~0x0000FF;
681 chip->pdev->class |= PCI_SDHCI_IFDMA;
682 }
683 return 0;
684 }
685
686 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
687 {
688 int tm, ps;
689
690 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
691 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
692 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
693 "board rev %d.%d, chip rev %d.%d\n",
694 board_rev >> 4, board_rev & 0xf,
695 chip_rev >> 4, chip_rev & 0xf);
696 if (chip_rev >= 0x20)
697 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
698
699 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
700 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
701 udelay(50);
702 tm = 10; /* Wait max 1 ms */
703 do {
704 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
705 if (ps & SYSKT_POWER_STATUS_OK)
706 break;
707 udelay(100);
708 } while (--tm);
709 if (!tm) {
710 dev_err(&slot->chip->pdev->dev,
711 "power regulator never stabilized");
712 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
713 return -ENODEV;
714 }
715
716 return 0;
717 }
718
719 static const struct sdhci_pci_fixes sdhci_syskt = {
720 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
721 .probe = syskt_probe,
722 .probe_slot = syskt_probe_slot,
723 };
724
725 static int via_probe(struct sdhci_pci_chip *chip)
726 {
727 if (chip->pdev->revision == 0x10)
728 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
729
730 return 0;
731 }
732
733 static const struct sdhci_pci_fixes sdhci_via = {
734 .probe = via_probe,
735 };
736
737 static const struct pci_device_id pci_ids[] = {
738 {
739 .vendor = PCI_VENDOR_ID_RICOH,
740 .device = PCI_DEVICE_ID_RICOH_R5C822,
741 .subvendor = PCI_ANY_ID,
742 .subdevice = PCI_ANY_ID,
743 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
744 },
745
746 {
747 .vendor = PCI_VENDOR_ID_RICOH,
748 .device = 0x843,
749 .subvendor = PCI_ANY_ID,
750 .subdevice = PCI_ANY_ID,
751 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
752 },
753
754 {
755 .vendor = PCI_VENDOR_ID_RICOH,
756 .device = 0xe822,
757 .subvendor = PCI_ANY_ID,
758 .subdevice = PCI_ANY_ID,
759 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
760 },
761
762 {
763 .vendor = PCI_VENDOR_ID_RICOH,
764 .device = 0xe823,
765 .subvendor = PCI_ANY_ID,
766 .subdevice = PCI_ANY_ID,
767 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
768 },
769
770 {
771 .vendor = PCI_VENDOR_ID_ENE,
772 .device = PCI_DEVICE_ID_ENE_CB712_SD,
773 .subvendor = PCI_ANY_ID,
774 .subdevice = PCI_ANY_ID,
775 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
776 },
777
778 {
779 .vendor = PCI_VENDOR_ID_ENE,
780 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
781 .subvendor = PCI_ANY_ID,
782 .subdevice = PCI_ANY_ID,
783 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
784 },
785
786 {
787 .vendor = PCI_VENDOR_ID_ENE,
788 .device = PCI_DEVICE_ID_ENE_CB714_SD,
789 .subvendor = PCI_ANY_ID,
790 .subdevice = PCI_ANY_ID,
791 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
792 },
793
794 {
795 .vendor = PCI_VENDOR_ID_ENE,
796 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
797 .subvendor = PCI_ANY_ID,
798 .subdevice = PCI_ANY_ID,
799 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
800 },
801
802 {
803 .vendor = PCI_VENDOR_ID_MARVELL,
804 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
805 .subvendor = PCI_ANY_ID,
806 .subdevice = PCI_ANY_ID,
807 .driver_data = (kernel_ulong_t)&sdhci_cafe,
808 },
809
810 {
811 .vendor = PCI_VENDOR_ID_JMICRON,
812 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
813 .subvendor = PCI_ANY_ID,
814 .subdevice = PCI_ANY_ID,
815 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
816 },
817
818 {
819 .vendor = PCI_VENDOR_ID_JMICRON,
820 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
821 .subvendor = PCI_ANY_ID,
822 .subdevice = PCI_ANY_ID,
823 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
824 },
825
826 {
827 .vendor = PCI_VENDOR_ID_JMICRON,
828 .device = PCI_DEVICE_ID_JMICRON_JMB388_SD,
829 .subvendor = PCI_ANY_ID,
830 .subdevice = PCI_ANY_ID,
831 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
832 },
833
834 {
835 .vendor = PCI_VENDOR_ID_JMICRON,
836 .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD,
837 .subvendor = PCI_ANY_ID,
838 .subdevice = PCI_ANY_ID,
839 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
840 },
841
842 {
843 .vendor = PCI_VENDOR_ID_SYSKONNECT,
844 .device = 0x8000,
845 .subvendor = PCI_ANY_ID,
846 .subdevice = PCI_ANY_ID,
847 .driver_data = (kernel_ulong_t)&sdhci_syskt,
848 },
849
850 {
851 .vendor = PCI_VENDOR_ID_VIA,
852 .device = 0x95d0,
853 .subvendor = PCI_ANY_ID,
854 .subdevice = PCI_ANY_ID,
855 .driver_data = (kernel_ulong_t)&sdhci_via,
856 },
857
858 {
859 .vendor = PCI_VENDOR_ID_INTEL,
860 .device = PCI_DEVICE_ID_INTEL_MRST_SD0,
861 .subvendor = PCI_ANY_ID,
862 .subdevice = PCI_ANY_ID,
863 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0,
864 },
865
866 {
867 .vendor = PCI_VENDOR_ID_INTEL,
868 .device = PCI_DEVICE_ID_INTEL_MRST_SD1,
869 .subvendor = PCI_ANY_ID,
870 .subdevice = PCI_ANY_ID,
871 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
872 },
873
874 {
875 .vendor = PCI_VENDOR_ID_INTEL,
876 .device = PCI_DEVICE_ID_INTEL_MRST_SD2,
877 .subvendor = PCI_ANY_ID,
878 .subdevice = PCI_ANY_ID,
879 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
880 },
881
882 {
883 .vendor = PCI_VENDOR_ID_INTEL,
884 .device = PCI_DEVICE_ID_INTEL_MFD_SD,
885 .subvendor = PCI_ANY_ID,
886 .subdevice = PCI_ANY_ID,
887 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
888 },
889
890 {
891 .vendor = PCI_VENDOR_ID_INTEL,
892 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1,
893 .subvendor = PCI_ANY_ID,
894 .subdevice = PCI_ANY_ID,
895 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
896 },
897
898 {
899 .vendor = PCI_VENDOR_ID_INTEL,
900 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2,
901 .subvendor = PCI_ANY_ID,
902 .subdevice = PCI_ANY_ID,
903 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
904 },
905
906 {
907 .vendor = PCI_VENDOR_ID_INTEL,
908 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0,
909 .subvendor = PCI_ANY_ID,
910 .subdevice = PCI_ANY_ID,
911 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
912 },
913
914 {
915 .vendor = PCI_VENDOR_ID_INTEL,
916 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1,
917 .subvendor = PCI_ANY_ID,
918 .subdevice = PCI_ANY_ID,
919 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
920 },
921
922 {
923 .vendor = PCI_VENDOR_ID_INTEL,
924 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
925 .subvendor = PCI_ANY_ID,
926 .subdevice = PCI_ANY_ID,
927 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
928 },
929
930 {
931 .vendor = PCI_VENDOR_ID_INTEL,
932 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
933 .subvendor = PCI_ANY_ID,
934 .subdevice = PCI_ANY_ID,
935 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
936 },
937
938 {
939 .vendor = PCI_VENDOR_ID_INTEL,
940 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC,
941 .subvendor = PCI_ANY_ID,
942 .subdevice = PCI_ANY_ID,
943 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
944 },
945
946 {
947 .vendor = PCI_VENDOR_ID_INTEL,
948 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
949 .subvendor = PCI_ANY_ID,
950 .subdevice = PCI_ANY_ID,
951 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
952 },
953
954 {
955 .vendor = PCI_VENDOR_ID_INTEL,
956 .device = PCI_DEVICE_ID_INTEL_BYT_SD,
957 .subvendor = PCI_ANY_ID,
958 .subdevice = PCI_ANY_ID,
959 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
960 },
961
962 {
963 .vendor = PCI_VENDOR_ID_INTEL,
964 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC2,
965 .subvendor = PCI_ANY_ID,
966 .subdevice = PCI_ANY_ID,
967 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
968 },
969
970
971 {
972 .vendor = PCI_VENDOR_ID_INTEL,
973 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO0,
974 .subvendor = PCI_ANY_ID,
975 .subdevice = PCI_ANY_ID,
976 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
977 },
978
979 {
980 .vendor = PCI_VENDOR_ID_INTEL,
981 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO1,
982 .subvendor = PCI_ANY_ID,
983 .subdevice = PCI_ANY_ID,
984 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
985 },
986
987 {
988 .vendor = PCI_VENDOR_ID_INTEL,
989 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO2,
990 .subvendor = PCI_ANY_ID,
991 .subdevice = PCI_ANY_ID,
992 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
993 },
994
995 {
996 .vendor = PCI_VENDOR_ID_INTEL,
997 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC0,
998 .subvendor = PCI_ANY_ID,
999 .subdevice = PCI_ANY_ID,
1000 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1001 },
1002
1003 {
1004 .vendor = PCI_VENDOR_ID_INTEL,
1005 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC1,
1006 .subvendor = PCI_ANY_ID,
1007 .subdevice = PCI_ANY_ID,
1008 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1009 },
1010
1011 {
1012 .vendor = PCI_VENDOR_ID_INTEL,
1013 .device = PCI_DEVICE_ID_INTEL_MRFL_MMC,
1014 .subvendor = PCI_ANY_ID,
1015 .subdevice = PCI_ANY_ID,
1016 .driver_data = (kernel_ulong_t)&sdhci_intel_mrfl_mmc,
1017 },
1018 {
1019 .vendor = PCI_VENDOR_ID_O2,
1020 .device = PCI_DEVICE_ID_O2_8120,
1021 .subvendor = PCI_ANY_ID,
1022 .subdevice = PCI_ANY_ID,
1023 .driver_data = (kernel_ulong_t)&sdhci_o2,
1024 },
1025
1026 {
1027 .vendor = PCI_VENDOR_ID_O2,
1028 .device = PCI_DEVICE_ID_O2_8220,
1029 .subvendor = PCI_ANY_ID,
1030 .subdevice = PCI_ANY_ID,
1031 .driver_data = (kernel_ulong_t)&sdhci_o2,
1032 },
1033
1034 {
1035 .vendor = PCI_VENDOR_ID_O2,
1036 .device = PCI_DEVICE_ID_O2_8221,
1037 .subvendor = PCI_ANY_ID,
1038 .subdevice = PCI_ANY_ID,
1039 .driver_data = (kernel_ulong_t)&sdhci_o2,
1040 },
1041
1042 {
1043 .vendor = PCI_VENDOR_ID_O2,
1044 .device = PCI_DEVICE_ID_O2_8320,
1045 .subvendor = PCI_ANY_ID,
1046 .subdevice = PCI_ANY_ID,
1047 .driver_data = (kernel_ulong_t)&sdhci_o2,
1048 },
1049
1050 {
1051 .vendor = PCI_VENDOR_ID_O2,
1052 .device = PCI_DEVICE_ID_O2_8321,
1053 .subvendor = PCI_ANY_ID,
1054 .subdevice = PCI_ANY_ID,
1055 .driver_data = (kernel_ulong_t)&sdhci_o2,
1056 },
1057
1058 { /* Generic SD host controller */
1059 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
1060 },
1061
1062 { /* end: all zeroes */ },
1063 };
1064
1065 MODULE_DEVICE_TABLE(pci, pci_ids);
1066
1067 /*****************************************************************************\
1068 * *
1069 * SDHCI core callbacks *
1070 * *
1071 \*****************************************************************************/
1072
1073 static int sdhci_pci_enable_dma(struct sdhci_host *host)
1074 {
1075 struct sdhci_pci_slot *slot;
1076 struct pci_dev *pdev;
1077 int ret;
1078
1079 slot = sdhci_priv(host);
1080 pdev = slot->chip->pdev;
1081
1082 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1083 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1084 (host->flags & SDHCI_USE_SDMA)) {
1085 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1086 "doesn't fully claim to support it.\n");
1087 }
1088
1089 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1090 if (ret)
1091 return ret;
1092
1093 pci_set_master(pdev);
1094
1095 return 0;
1096 }
1097
1098 static int sdhci_pci_bus_width(struct sdhci_host *host, int width)
1099 {
1100 u8 ctrl;
1101
1102 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
1103
1104 switch (width) {
1105 case MMC_BUS_WIDTH_8:
1106 ctrl |= SDHCI_CTRL_8BITBUS;
1107 ctrl &= ~SDHCI_CTRL_4BITBUS;
1108 break;
1109 case MMC_BUS_WIDTH_4:
1110 ctrl |= SDHCI_CTRL_4BITBUS;
1111 ctrl &= ~SDHCI_CTRL_8BITBUS;
1112 break;
1113 default:
1114 ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS);
1115 break;
1116 }
1117
1118 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
1119
1120 return 0;
1121 }
1122
1123 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1124 {
1125 struct sdhci_pci_slot *slot = sdhci_priv(host);
1126 int rst_n_gpio = slot->rst_n_gpio;
1127
1128 if (!gpio_is_valid(rst_n_gpio))
1129 return;
1130 gpio_set_value_cansleep(rst_n_gpio, 0);
1131 /* For eMMC, minimum is 1us but give it 10us for good measure */
1132 udelay(10);
1133 gpio_set_value_cansleep(rst_n_gpio, 1);
1134 /* For eMMC, minimum is 200us but give it 300us for good measure */
1135 usleep_range(300, 1000);
1136 }
1137
1138 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1139 {
1140 struct sdhci_pci_slot *slot = sdhci_priv(host);
1141
1142 if (slot->hw_reset)
1143 slot->hw_reset(host);
1144 }
1145
1146 static const struct sdhci_ops sdhci_pci_ops = {
1147 .enable_dma = sdhci_pci_enable_dma,
1148 .platform_bus_width = sdhci_pci_bus_width,
1149 .hw_reset = sdhci_pci_hw_reset,
1150 };
1151
1152 /*****************************************************************************\
1153 * *
1154 * Suspend/resume *
1155 * *
1156 \*****************************************************************************/
1157
1158 #ifdef CONFIG_PM
1159
1160 static int sdhci_pci_suspend(struct device *dev)
1161 {
1162 struct pci_dev *pdev = to_pci_dev(dev);
1163 struct sdhci_pci_chip *chip;
1164 struct sdhci_pci_slot *slot;
1165 mmc_pm_flag_t slot_pm_flags;
1166 mmc_pm_flag_t pm_flags = 0;
1167 int i, ret;
1168
1169 chip = pci_get_drvdata(pdev);
1170 if (!chip)
1171 return 0;
1172
1173 for (i = 0; i < chip->num_slots; i++) {
1174 slot = chip->slots[i];
1175 if (!slot)
1176 continue;
1177
1178 ret = sdhci_suspend_host(slot->host);
1179
1180 if (ret)
1181 goto err_pci_suspend;
1182
1183 slot_pm_flags = slot->host->mmc->pm_flags;
1184 if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1185 sdhci_enable_irq_wakeups(slot->host);
1186
1187 pm_flags |= slot_pm_flags;
1188 }
1189
1190 if (chip->fixes && chip->fixes->suspend) {
1191 ret = chip->fixes->suspend(chip);
1192 if (ret)
1193 goto err_pci_suspend;
1194 }
1195
1196 pci_save_state(pdev);
1197 if (pm_flags & MMC_PM_KEEP_POWER) {
1198 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) {
1199 pci_pme_active(pdev, true);
1200 pci_enable_wake(pdev, PCI_D3hot, 1);
1201 }
1202 pci_set_power_state(pdev, PCI_D3hot);
1203 } else {
1204 pci_enable_wake(pdev, PCI_D3hot, 0);
1205 pci_disable_device(pdev);
1206 pci_set_power_state(pdev, PCI_D3hot);
1207 }
1208
1209 return 0;
1210
1211 err_pci_suspend:
1212 while (--i >= 0)
1213 sdhci_resume_host(chip->slots[i]->host);
1214 return ret;
1215 }
1216
1217 static int sdhci_pci_resume(struct device *dev)
1218 {
1219 struct pci_dev *pdev = to_pci_dev(dev);
1220 struct sdhci_pci_chip *chip;
1221 struct sdhci_pci_slot *slot;
1222 int i, ret;
1223
1224 chip = pci_get_drvdata(pdev);
1225 if (!chip)
1226 return 0;
1227
1228 pci_set_power_state(pdev, PCI_D0);
1229 pci_restore_state(pdev);
1230 ret = pci_enable_device(pdev);
1231 if (ret)
1232 return ret;
1233
1234 if (chip->fixes && chip->fixes->resume) {
1235 ret = chip->fixes->resume(chip);
1236 if (ret)
1237 return ret;
1238 }
1239
1240 for (i = 0; i < chip->num_slots; i++) {
1241 slot = chip->slots[i];
1242 if (!slot)
1243 continue;
1244
1245 ret = sdhci_resume_host(slot->host);
1246 if (ret)
1247 return ret;
1248 }
1249
1250 return 0;
1251 }
1252
1253 #else /* CONFIG_PM */
1254
1255 #define sdhci_pci_suspend NULL
1256 #define sdhci_pci_resume NULL
1257
1258 #endif /* CONFIG_PM */
1259
1260 #ifdef CONFIG_PM_RUNTIME
1261
1262 static int sdhci_pci_runtime_suspend(struct device *dev)
1263 {
1264 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1265 struct sdhci_pci_chip *chip;
1266 struct sdhci_pci_slot *slot;
1267 int i, ret;
1268
1269 chip = pci_get_drvdata(pdev);
1270 if (!chip)
1271 return 0;
1272
1273 for (i = 0; i < chip->num_slots; i++) {
1274 slot = chip->slots[i];
1275 if (!slot)
1276 continue;
1277
1278 ret = sdhci_runtime_suspend_host(slot->host);
1279
1280 if (ret)
1281 goto err_pci_runtime_suspend;
1282 }
1283
1284 if (chip->fixes && chip->fixes->suspend) {
1285 ret = chip->fixes->suspend(chip);
1286 if (ret)
1287 goto err_pci_runtime_suspend;
1288 }
1289
1290 return 0;
1291
1292 err_pci_runtime_suspend:
1293 while (--i >= 0)
1294 sdhci_runtime_resume_host(chip->slots[i]->host);
1295 return ret;
1296 }
1297
1298 static int sdhci_pci_runtime_resume(struct device *dev)
1299 {
1300 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1301 struct sdhci_pci_chip *chip;
1302 struct sdhci_pci_slot *slot;
1303 int i, ret;
1304
1305 chip = pci_get_drvdata(pdev);
1306 if (!chip)
1307 return 0;
1308
1309 if (chip->fixes && chip->fixes->resume) {
1310 ret = chip->fixes->resume(chip);
1311 if (ret)
1312 return ret;
1313 }
1314
1315 for (i = 0; i < chip->num_slots; i++) {
1316 slot = chip->slots[i];
1317 if (!slot)
1318 continue;
1319
1320 ret = sdhci_runtime_resume_host(slot->host);
1321 if (ret)
1322 return ret;
1323 }
1324
1325 return 0;
1326 }
1327
1328 static int sdhci_pci_runtime_idle(struct device *dev)
1329 {
1330 return 0;
1331 }
1332
1333 #else
1334
1335 #define sdhci_pci_runtime_suspend NULL
1336 #define sdhci_pci_runtime_resume NULL
1337 #define sdhci_pci_runtime_idle NULL
1338
1339 #endif
1340
1341 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1342 .suspend = sdhci_pci_suspend,
1343 .resume = sdhci_pci_resume,
1344 .runtime_suspend = sdhci_pci_runtime_suspend,
1345 .runtime_resume = sdhci_pci_runtime_resume,
1346 .runtime_idle = sdhci_pci_runtime_idle,
1347 };
1348
1349 /*****************************************************************************\
1350 * *
1351 * Device probing/removal *
1352 * *
1353 \*****************************************************************************/
1354
1355 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1356 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1357 int slotno)
1358 {
1359 struct sdhci_pci_slot *slot;
1360 struct sdhci_host *host;
1361 int ret, bar = first_bar + slotno;
1362
1363 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1364 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1365 return ERR_PTR(-ENODEV);
1366 }
1367
1368 if (pci_resource_len(pdev, bar) < 0x100) {
1369 dev_err(&pdev->dev, "Invalid iomem size. You may "
1370 "experience problems.\n");
1371 }
1372
1373 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1374 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1375 return ERR_PTR(-ENODEV);
1376 }
1377
1378 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1379 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1380 return ERR_PTR(-ENODEV);
1381 }
1382
1383 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
1384 if (IS_ERR(host)) {
1385 dev_err(&pdev->dev, "cannot allocate host\n");
1386 return ERR_CAST(host);
1387 }
1388
1389 slot = sdhci_priv(host);
1390
1391 slot->chip = chip;
1392 slot->host = host;
1393 slot->pci_bar = bar;
1394 slot->rst_n_gpio = -EINVAL;
1395 slot->cd_gpio = -EINVAL;
1396
1397 /* Retrieve platform data if there is any */
1398 if (*sdhci_pci_get_data)
1399 slot->data = sdhci_pci_get_data(pdev, slotno);
1400
1401 if (slot->data) {
1402 if (slot->data->setup) {
1403 ret = slot->data->setup(slot->data);
1404 if (ret) {
1405 dev_err(&pdev->dev, "platform setup failed\n");
1406 goto free;
1407 }
1408 }
1409 slot->rst_n_gpio = slot->data->rst_n_gpio;
1410 slot->cd_gpio = slot->data->cd_gpio;
1411 }
1412
1413 host->hw_name = "PCI";
1414 host->ops = &sdhci_pci_ops;
1415 host->quirks = chip->quirks;
1416 host->quirks2 = chip->quirks2;
1417
1418 host->irq = pdev->irq;
1419
1420 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
1421 if (ret) {
1422 dev_err(&pdev->dev, "cannot request region\n");
1423 goto cleanup;
1424 }
1425
1426 host->ioaddr = pci_ioremap_bar(pdev, bar);
1427 if (!host->ioaddr) {
1428 dev_err(&pdev->dev, "failed to remap registers\n");
1429 ret = -ENOMEM;
1430 goto release;
1431 }
1432
1433 if (chip->fixes && chip->fixes->probe_slot) {
1434 ret = chip->fixes->probe_slot(slot);
1435 if (ret)
1436 goto unmap;
1437 }
1438
1439 if (gpio_is_valid(slot->rst_n_gpio)) {
1440 if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) {
1441 gpio_direction_output(slot->rst_n_gpio, 1);
1442 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1443 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1444 } else {
1445 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1446 slot->rst_n_gpio = -EINVAL;
1447 }
1448 }
1449
1450 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1451 host->mmc->slotno = slotno;
1452 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1453
1454 ret = sdhci_add_host(host);
1455 if (ret)
1456 goto remove;
1457
1458 sdhci_pci_add_own_cd(slot);
1459
1460 return slot;
1461
1462 remove:
1463 if (gpio_is_valid(slot->rst_n_gpio))
1464 gpio_free(slot->rst_n_gpio);
1465
1466 if (chip->fixes && chip->fixes->remove_slot)
1467 chip->fixes->remove_slot(slot, 0);
1468
1469 unmap:
1470 iounmap(host->ioaddr);
1471
1472 release:
1473 pci_release_region(pdev, bar);
1474
1475 cleanup:
1476 if (slot->data && slot->data->cleanup)
1477 slot->data->cleanup(slot->data);
1478
1479 free:
1480 sdhci_free_host(host);
1481
1482 return ERR_PTR(ret);
1483 }
1484
1485 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1486 {
1487 int dead;
1488 u32 scratch;
1489
1490 sdhci_pci_remove_own_cd(slot);
1491
1492 dead = 0;
1493 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1494 if (scratch == (u32)-1)
1495 dead = 1;
1496
1497 sdhci_remove_host(slot->host, dead);
1498
1499 if (gpio_is_valid(slot->rst_n_gpio))
1500 gpio_free(slot->rst_n_gpio);
1501
1502 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1503 slot->chip->fixes->remove_slot(slot, dead);
1504
1505 if (slot->data && slot->data->cleanup)
1506 slot->data->cleanup(slot->data);
1507
1508 pci_release_region(slot->chip->pdev, slot->pci_bar);
1509
1510 sdhci_free_host(slot->host);
1511 }
1512
1513 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1514 {
1515 pm_runtime_put_noidle(dev);
1516 pm_runtime_allow(dev);
1517 pm_runtime_set_autosuspend_delay(dev, 50);
1518 pm_runtime_use_autosuspend(dev);
1519 pm_suspend_ignore_children(dev, 1);
1520 }
1521
1522 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1523 {
1524 pm_runtime_forbid(dev);
1525 pm_runtime_get_noresume(dev);
1526 }
1527
1528 static int sdhci_pci_probe(struct pci_dev *pdev,
1529 const struct pci_device_id *ent)
1530 {
1531 struct sdhci_pci_chip *chip;
1532 struct sdhci_pci_slot *slot;
1533
1534 u8 slots, first_bar;
1535 int ret, i;
1536
1537 BUG_ON(pdev == NULL);
1538 BUG_ON(ent == NULL);
1539
1540 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1541 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1542
1543 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1544 if (ret)
1545 return ret;
1546
1547 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1548 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1549 if (slots == 0)
1550 return -ENODEV;
1551
1552 BUG_ON(slots > MAX_SLOTS);
1553
1554 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1555 if (ret)
1556 return ret;
1557
1558 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1559
1560 if (first_bar > 5) {
1561 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1562 return -ENODEV;
1563 }
1564
1565 ret = pci_enable_device(pdev);
1566 if (ret)
1567 return ret;
1568
1569 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
1570 if (!chip) {
1571 ret = -ENOMEM;
1572 goto err;
1573 }
1574
1575 chip->pdev = pdev;
1576 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1577 if (chip->fixes) {
1578 chip->quirks = chip->fixes->quirks;
1579 chip->quirks2 = chip->fixes->quirks2;
1580 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1581 }
1582 chip->num_slots = slots;
1583
1584 pci_set_drvdata(pdev, chip);
1585
1586 if (chip->fixes && chip->fixes->probe) {
1587 ret = chip->fixes->probe(chip);
1588 if (ret)
1589 goto free;
1590 }
1591
1592 slots = chip->num_slots; /* Quirk may have changed this */
1593
1594 for (i = 0; i < slots; i++) {
1595 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1596 if (IS_ERR(slot)) {
1597 for (i--; i >= 0; i--)
1598 sdhci_pci_remove_slot(chip->slots[i]);
1599 ret = PTR_ERR(slot);
1600 goto free;
1601 }
1602
1603 chip->slots[i] = slot;
1604 }
1605
1606 if (chip->allow_runtime_pm)
1607 sdhci_pci_runtime_pm_allow(&pdev->dev);
1608
1609 return 0;
1610
1611 free:
1612 pci_set_drvdata(pdev, NULL);
1613 kfree(chip);
1614
1615 err:
1616 pci_disable_device(pdev);
1617 return ret;
1618 }
1619
1620 static void sdhci_pci_remove(struct pci_dev *pdev)
1621 {
1622 int i;
1623 struct sdhci_pci_chip *chip;
1624
1625 chip = pci_get_drvdata(pdev);
1626
1627 if (chip) {
1628 if (chip->allow_runtime_pm)
1629 sdhci_pci_runtime_pm_forbid(&pdev->dev);
1630
1631 for (i = 0; i < chip->num_slots; i++)
1632 sdhci_pci_remove_slot(chip->slots[i]);
1633
1634 pci_set_drvdata(pdev, NULL);
1635 kfree(chip);
1636 }
1637
1638 pci_disable_device(pdev);
1639 }
1640
1641 static struct pci_driver sdhci_driver = {
1642 .name = "sdhci-pci",
1643 .id_table = pci_ids,
1644 .probe = sdhci_pci_probe,
1645 .remove = sdhci_pci_remove,
1646 .driver = {
1647 .pm = &sdhci_pci_pm_ops
1648 },
1649 };
1650
1651 module_pci_driver(sdhci_driver);
1652
1653 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1654 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
1655 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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