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Merge tag 'media/v4.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[mirror_ubuntu-artful-kernel.git] / drivers / mmc / host / sdhci-pci-core.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/mmc/mmc.h>
24 #include <linux/scatterlist.h>
25 #include <linux/io.h>
26 #include <linux/gpio.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/mmc/slot-gpio.h>
29 #include <linux/mmc/sdhci-pci-data.h>
30 #include <linux/acpi.h>
31
32 #include "sdhci.h"
33 #include "sdhci-pci.h"
34 #include "sdhci-pci-o2micro.h"
35
36 static int sdhci_pci_enable_dma(struct sdhci_host *host);
37 static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width);
38 static void sdhci_pci_hw_reset(struct sdhci_host *host);
39 static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
40 struct mmc_card *card,
41 unsigned int max_dtr, int host_drv,
42 int card_drv, int *drv_type);
43
44 /*****************************************************************************\
45 * *
46 * Hardware specific quirk handling *
47 * *
48 \*****************************************************************************/
49
50 static int ricoh_probe(struct sdhci_pci_chip *chip)
51 {
52 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
53 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
54 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
55 return 0;
56 }
57
58 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
59 {
60 slot->host->caps =
61 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
62 & SDHCI_TIMEOUT_CLK_MASK) |
63
64 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
65 & SDHCI_CLOCK_BASE_MASK) |
66
67 SDHCI_TIMEOUT_CLK_UNIT |
68 SDHCI_CAN_VDD_330 |
69 SDHCI_CAN_DO_HISPD |
70 SDHCI_CAN_DO_SDMA;
71 return 0;
72 }
73
74 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
75 {
76 /* Apply a delay to allow controller to settle */
77 /* Otherwise it becomes confused if card state changed
78 during suspend */
79 msleep(500);
80 return 0;
81 }
82
83 static const struct sdhci_pci_fixes sdhci_ricoh = {
84 .probe = ricoh_probe,
85 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
86 SDHCI_QUIRK_FORCE_DMA |
87 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
88 };
89
90 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
91 .probe_slot = ricoh_mmc_probe_slot,
92 .resume = ricoh_mmc_resume,
93 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
94 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
95 SDHCI_QUIRK_NO_CARD_NO_RESET |
96 SDHCI_QUIRK_MISSING_CAPS
97 };
98
99 static const struct sdhci_pci_fixes sdhci_ene_712 = {
100 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
101 SDHCI_QUIRK_BROKEN_DMA,
102 };
103
104 static const struct sdhci_pci_fixes sdhci_ene_714 = {
105 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
106 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
107 SDHCI_QUIRK_BROKEN_DMA,
108 };
109
110 static const struct sdhci_pci_fixes sdhci_cafe = {
111 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
112 SDHCI_QUIRK_NO_BUSY_IRQ |
113 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
114 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
115 };
116
117 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
118 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
119 };
120
121 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
122 {
123 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
124 return 0;
125 }
126
127 /*
128 * ADMA operation is disabled for Moorestown platform due to
129 * hardware bugs.
130 */
131 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
132 {
133 /*
134 * slots number is fixed here for MRST as SDIO3/5 are never used and
135 * have hardware bugs.
136 */
137 chip->num_slots = 1;
138 return 0;
139 }
140
141 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
142 {
143 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
144 return 0;
145 }
146
147 #ifdef CONFIG_PM
148
149 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
150 {
151 struct sdhci_pci_slot *slot = dev_id;
152 struct sdhci_host *host = slot->host;
153
154 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
155 return IRQ_HANDLED;
156 }
157
158 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
159 {
160 int err, irq, gpio = slot->cd_gpio;
161
162 slot->cd_gpio = -EINVAL;
163 slot->cd_irq = -EINVAL;
164
165 if (!gpio_is_valid(gpio))
166 return;
167
168 err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
169 if (err < 0)
170 goto out;
171
172 err = gpio_direction_input(gpio);
173 if (err < 0)
174 goto out_free;
175
176 irq = gpio_to_irq(gpio);
177 if (irq < 0)
178 goto out_free;
179
180 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
181 IRQF_TRIGGER_FALLING, "sd_cd", slot);
182 if (err)
183 goto out_free;
184
185 slot->cd_gpio = gpio;
186 slot->cd_irq = irq;
187
188 return;
189
190 out_free:
191 devm_gpio_free(&slot->chip->pdev->dev, gpio);
192 out:
193 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
194 }
195
196 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
197 {
198 if (slot->cd_irq >= 0)
199 free_irq(slot->cd_irq, slot);
200 }
201
202 #else
203
204 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
205 {
206 }
207
208 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
209 {
210 }
211
212 #endif
213
214 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
215 {
216 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
217 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
218 MMC_CAP2_HC_ERASE_SZ;
219 return 0;
220 }
221
222 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
223 {
224 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
225 return 0;
226 }
227
228 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
229 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
230 .probe_slot = mrst_hc_probe_slot,
231 };
232
233 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
234 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
235 .probe = mrst_hc_probe,
236 };
237
238 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
239 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
240 .allow_runtime_pm = true,
241 .own_cd_for_runtime_pm = true,
242 };
243
244 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
245 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
246 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
247 .allow_runtime_pm = true,
248 .probe_slot = mfd_sdio_probe_slot,
249 };
250
251 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
252 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
253 .allow_runtime_pm = true,
254 .probe_slot = mfd_emmc_probe_slot,
255 };
256
257 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
258 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
259 .probe_slot = pch_hc_probe_slot,
260 };
261
262 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
263 {
264 u8 reg;
265
266 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
267 reg |= 0x10;
268 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
269 /* For eMMC, minimum is 1us but give it 9us for good measure */
270 udelay(9);
271 reg &= ~0x10;
272 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
273 /* For eMMC, minimum is 200us but give it 300us for good measure */
274 usleep_range(300, 1000);
275 }
276
277 static int spt_select_drive_strength(struct sdhci_host *host,
278 struct mmc_card *card,
279 unsigned int max_dtr,
280 int host_drv, int card_drv, int *drv_type)
281 {
282 int drive_strength;
283
284 if (sdhci_pci_spt_drive_strength > 0)
285 drive_strength = sdhci_pci_spt_drive_strength & 0xf;
286 else
287 drive_strength = 0; /* Default 50-ohm */
288
289 if ((mmc_driver_type_mask(drive_strength) & card_drv) == 0)
290 drive_strength = 0; /* Default 50-ohm */
291
292 return drive_strength;
293 }
294
295 /* Try to read the drive strength from the card */
296 static void spt_read_drive_strength(struct sdhci_host *host)
297 {
298 u32 val, i, t;
299 u16 m;
300
301 if (sdhci_pci_spt_drive_strength)
302 return;
303
304 sdhci_pci_spt_drive_strength = -1;
305
306 m = sdhci_readw(host, SDHCI_HOST_CONTROL2) & 0x7;
307 if (m != 3 && m != 5)
308 return;
309 val = sdhci_readl(host, SDHCI_PRESENT_STATE);
310 if (val & 0x3)
311 return;
312 sdhci_writel(host, 0x007f0023, SDHCI_INT_ENABLE);
313 sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
314 sdhci_writew(host, 0x10, SDHCI_TRANSFER_MODE);
315 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
316 sdhci_writew(host, 512, SDHCI_BLOCK_SIZE);
317 sdhci_writew(host, 1, SDHCI_BLOCK_COUNT);
318 sdhci_writel(host, 0, SDHCI_ARGUMENT);
319 sdhci_writew(host, 0x83b, SDHCI_COMMAND);
320 for (i = 0; i < 1000; i++) {
321 val = sdhci_readl(host, SDHCI_INT_STATUS);
322 if (val & 0xffff8000)
323 return;
324 if (val & 0x20)
325 break;
326 udelay(1);
327 }
328 val = sdhci_readl(host, SDHCI_PRESENT_STATE);
329 if (!(val & 0x800))
330 return;
331 for (i = 0; i < 47; i++)
332 val = sdhci_readl(host, SDHCI_BUFFER);
333 t = val & 0xf00;
334 if (t != 0x200 && t != 0x300)
335 return;
336
337 sdhci_pci_spt_drive_strength = 0x10 | ((val >> 12) & 0xf);
338 }
339
340 static int bxt_get_cd(struct mmc_host *mmc)
341 {
342 int gpio_cd = mmc_gpio_get_cd(mmc);
343 struct sdhci_host *host = mmc_priv(mmc);
344 unsigned long flags;
345 int ret = 0;
346
347 if (!gpio_cd)
348 return 0;
349
350 spin_lock_irqsave(&host->lock, flags);
351
352 if (host->flags & SDHCI_DEVICE_DEAD)
353 goto out;
354
355 ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
356 out:
357 spin_unlock_irqrestore(&host->lock, flags);
358
359 return ret;
360 }
361
362 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
363 {
364 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
365 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
366 MMC_CAP_CMD_DURING_TFR |
367 MMC_CAP_WAIT_WHILE_BUSY;
368 slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
369 slot->hw_reset = sdhci_pci_int_hw_reset;
370 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
371 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
372 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_SPT_EMMC) {
373 spt_read_drive_strength(slot->host);
374 slot->select_drive_strength = spt_select_drive_strength;
375 }
376 return 0;
377 }
378
379 #ifdef CONFIG_ACPI
380 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
381 {
382 acpi_status status;
383 unsigned long long max_freq;
384
385 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
386 "MXFQ", NULL, &max_freq);
387 if (ACPI_FAILURE(status)) {
388 dev_err(&slot->chip->pdev->dev,
389 "MXFQ not found in acpi table\n");
390 return -EINVAL;
391 }
392
393 slot->host->mmc->f_max = max_freq * 1000000;
394
395 return 0;
396 }
397 #else
398 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
399 {
400 return 0;
401 }
402 #endif
403
404 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
405 {
406 int err;
407
408 err = ni_set_max_freq(slot);
409 if (err)
410 return err;
411
412 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
413 MMC_CAP_WAIT_WHILE_BUSY;
414 return 0;
415 }
416
417 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
418 {
419 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
420 MMC_CAP_WAIT_WHILE_BUSY;
421 return 0;
422 }
423
424 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
425 {
426 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
427 slot->cd_con_id = NULL;
428 slot->cd_idx = 0;
429 slot->cd_override_level = true;
430 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
431 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
432 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
433 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD) {
434 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
435 slot->host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM;
436 }
437
438 return 0;
439 }
440
441 #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
442 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
443
444 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
445 unsigned short vdd)
446 {
447 int cntr;
448 u8 reg;
449
450 sdhci_set_power(host, mode, vdd);
451
452 if (mode == MMC_POWER_OFF)
453 return;
454
455 /*
456 * Bus power might not enable after D3 -> D0 transition due to the
457 * present state not yet having propagated. Retry for up to 2ms.
458 */
459 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
460 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
461 if (reg & SDHCI_POWER_ON)
462 break;
463 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
464 reg |= SDHCI_POWER_ON;
465 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
466 }
467 }
468
469 static const struct sdhci_ops sdhci_intel_byt_ops = {
470 .set_clock = sdhci_set_clock,
471 .set_power = sdhci_intel_set_power,
472 .enable_dma = sdhci_pci_enable_dma,
473 .set_bus_width = sdhci_pci_set_bus_width,
474 .reset = sdhci_reset,
475 .set_uhs_signaling = sdhci_set_uhs_signaling,
476 .hw_reset = sdhci_pci_hw_reset,
477 .select_drive_strength = sdhci_pci_select_drive_strength,
478 };
479
480 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
481 .allow_runtime_pm = true,
482 .probe_slot = byt_emmc_probe_slot,
483 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
484 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
485 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
486 SDHCI_QUIRK2_STOP_WITH_TC,
487 .ops = &sdhci_intel_byt_ops,
488 };
489
490 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
491 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
492 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
493 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
494 .allow_runtime_pm = true,
495 .probe_slot = ni_byt_sdio_probe_slot,
496 .ops = &sdhci_intel_byt_ops,
497 };
498
499 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
500 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
501 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
502 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
503 .allow_runtime_pm = true,
504 .probe_slot = byt_sdio_probe_slot,
505 .ops = &sdhci_intel_byt_ops,
506 };
507
508 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
509 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
510 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
511 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
512 SDHCI_QUIRK2_STOP_WITH_TC,
513 .allow_runtime_pm = true,
514 .own_cd_for_runtime_pm = true,
515 .probe_slot = byt_sd_probe_slot,
516 .ops = &sdhci_intel_byt_ops,
517 };
518
519 /* Define Host controllers for Intel Merrifield platform */
520 #define INTEL_MRFLD_EMMC_0 0
521 #define INTEL_MRFLD_EMMC_1 1
522 #define INTEL_MRFLD_SD 2
523 #define INTEL_MRFLD_SDIO 3
524
525 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
526 {
527 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
528
529 switch (func) {
530 case INTEL_MRFLD_EMMC_0:
531 case INTEL_MRFLD_EMMC_1:
532 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
533 MMC_CAP_8_BIT_DATA |
534 MMC_CAP_1_8V_DDR;
535 break;
536 case INTEL_MRFLD_SD:
537 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
538 break;
539 case INTEL_MRFLD_SDIO:
540 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
541 MMC_CAP_POWER_OFF_CARD;
542 break;
543 default:
544 return -ENODEV;
545 }
546 return 0;
547 }
548
549 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
550 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
551 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
552 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
553 .allow_runtime_pm = true,
554 .probe_slot = intel_mrfld_mmc_probe_slot,
555 };
556
557 /* O2Micro extra registers */
558 #define O2_SD_LOCK_WP 0xD3
559 #define O2_SD_MULTI_VCC3V 0xEE
560 #define O2_SD_CLKREQ 0xEC
561 #define O2_SD_CAPS 0xE0
562 #define O2_SD_ADMA1 0xE2
563 #define O2_SD_ADMA2 0xE7
564 #define O2_SD_INF_MOD 0xF1
565
566 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
567 {
568 u8 scratch;
569 int ret;
570
571 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
572 if (ret)
573 return ret;
574
575 /*
576 * Turn PMOS on [bit 0], set over current detection to 2.4 V
577 * [bit 1:2] and enable over current debouncing [bit 6].
578 */
579 if (on)
580 scratch |= 0x47;
581 else
582 scratch &= ~0x47;
583
584 return pci_write_config_byte(chip->pdev, 0xAE, scratch);
585 }
586
587 static int jmicron_probe(struct sdhci_pci_chip *chip)
588 {
589 int ret;
590 u16 mmcdev = 0;
591
592 if (chip->pdev->revision == 0) {
593 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
594 SDHCI_QUIRK_32BIT_DMA_SIZE |
595 SDHCI_QUIRK_32BIT_ADMA_SIZE |
596 SDHCI_QUIRK_RESET_AFTER_REQUEST |
597 SDHCI_QUIRK_BROKEN_SMALL_PIO;
598 }
599
600 /*
601 * JMicron chips can have two interfaces to the same hardware
602 * in order to work around limitations in Microsoft's driver.
603 * We need to make sure we only bind to one of them.
604 *
605 * This code assumes two things:
606 *
607 * 1. The PCI code adds subfunctions in order.
608 *
609 * 2. The MMC interface has a lower subfunction number
610 * than the SD interface.
611 */
612 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
613 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
614 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
615 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
616
617 if (mmcdev) {
618 struct pci_dev *sd_dev;
619
620 sd_dev = NULL;
621 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
622 mmcdev, sd_dev)) != NULL) {
623 if ((PCI_SLOT(chip->pdev->devfn) ==
624 PCI_SLOT(sd_dev->devfn)) &&
625 (chip->pdev->bus == sd_dev->bus))
626 break;
627 }
628
629 if (sd_dev) {
630 pci_dev_put(sd_dev);
631 dev_info(&chip->pdev->dev, "Refusing to bind to "
632 "secondary interface.\n");
633 return -ENODEV;
634 }
635 }
636
637 /*
638 * JMicron chips need a bit of a nudge to enable the power
639 * output pins.
640 */
641 ret = jmicron_pmos(chip, 1);
642 if (ret) {
643 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
644 return ret;
645 }
646
647 /* quirk for unsable RO-detection on JM388 chips */
648 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
649 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
650 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
651
652 return 0;
653 }
654
655 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
656 {
657 u8 scratch;
658
659 scratch = readb(host->ioaddr + 0xC0);
660
661 if (on)
662 scratch |= 0x01;
663 else
664 scratch &= ~0x01;
665
666 writeb(scratch, host->ioaddr + 0xC0);
667 }
668
669 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
670 {
671 if (slot->chip->pdev->revision == 0) {
672 u16 version;
673
674 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
675 version = (version & SDHCI_VENDOR_VER_MASK) >>
676 SDHCI_VENDOR_VER_SHIFT;
677
678 /*
679 * Older versions of the chip have lots of nasty glitches
680 * in the ADMA engine. It's best just to avoid it
681 * completely.
682 */
683 if (version < 0xAC)
684 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
685 }
686
687 /* JM388 MMC doesn't support 1.8V while SD supports it */
688 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
689 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
690 MMC_VDD_29_30 | MMC_VDD_30_31 |
691 MMC_VDD_165_195; /* allow 1.8V */
692 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
693 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
694 }
695
696 /*
697 * The secondary interface requires a bit set to get the
698 * interrupts.
699 */
700 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
701 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
702 jmicron_enable_mmc(slot->host, 1);
703
704 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
705
706 return 0;
707 }
708
709 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
710 {
711 if (dead)
712 return;
713
714 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
715 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
716 jmicron_enable_mmc(slot->host, 0);
717 }
718
719 static int jmicron_suspend(struct sdhci_pci_chip *chip)
720 {
721 int i;
722
723 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
724 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
725 for (i = 0; i < chip->num_slots; i++)
726 jmicron_enable_mmc(chip->slots[i]->host, 0);
727 }
728
729 return 0;
730 }
731
732 static int jmicron_resume(struct sdhci_pci_chip *chip)
733 {
734 int ret, i;
735
736 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
737 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
738 for (i = 0; i < chip->num_slots; i++)
739 jmicron_enable_mmc(chip->slots[i]->host, 1);
740 }
741
742 ret = jmicron_pmos(chip, 1);
743 if (ret) {
744 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
745 return ret;
746 }
747
748 return 0;
749 }
750
751 static const struct sdhci_pci_fixes sdhci_o2 = {
752 .probe = sdhci_pci_o2_probe,
753 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
754 .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
755 .probe_slot = sdhci_pci_o2_probe_slot,
756 .resume = sdhci_pci_o2_resume,
757 };
758
759 static const struct sdhci_pci_fixes sdhci_jmicron = {
760 .probe = jmicron_probe,
761
762 .probe_slot = jmicron_probe_slot,
763 .remove_slot = jmicron_remove_slot,
764
765 .suspend = jmicron_suspend,
766 .resume = jmicron_resume,
767 };
768
769 /* SysKonnect CardBus2SDIO extra registers */
770 #define SYSKT_CTRL 0x200
771 #define SYSKT_RDFIFO_STAT 0x204
772 #define SYSKT_WRFIFO_STAT 0x208
773 #define SYSKT_POWER_DATA 0x20c
774 #define SYSKT_POWER_330 0xef
775 #define SYSKT_POWER_300 0xf8
776 #define SYSKT_POWER_184 0xcc
777 #define SYSKT_POWER_CMD 0x20d
778 #define SYSKT_POWER_START (1 << 7)
779 #define SYSKT_POWER_STATUS 0x20e
780 #define SYSKT_POWER_STATUS_OK (1 << 0)
781 #define SYSKT_BOARD_REV 0x210
782 #define SYSKT_CHIP_REV 0x211
783 #define SYSKT_CONF_DATA 0x212
784 #define SYSKT_CONF_DATA_1V8 (1 << 2)
785 #define SYSKT_CONF_DATA_2V5 (1 << 1)
786 #define SYSKT_CONF_DATA_3V3 (1 << 0)
787
788 static int syskt_probe(struct sdhci_pci_chip *chip)
789 {
790 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
791 chip->pdev->class &= ~0x0000FF;
792 chip->pdev->class |= PCI_SDHCI_IFDMA;
793 }
794 return 0;
795 }
796
797 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
798 {
799 int tm, ps;
800
801 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
802 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
803 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
804 "board rev %d.%d, chip rev %d.%d\n",
805 board_rev >> 4, board_rev & 0xf,
806 chip_rev >> 4, chip_rev & 0xf);
807 if (chip_rev >= 0x20)
808 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
809
810 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
811 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
812 udelay(50);
813 tm = 10; /* Wait max 1 ms */
814 do {
815 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
816 if (ps & SYSKT_POWER_STATUS_OK)
817 break;
818 udelay(100);
819 } while (--tm);
820 if (!tm) {
821 dev_err(&slot->chip->pdev->dev,
822 "power regulator never stabilized");
823 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
824 return -ENODEV;
825 }
826
827 return 0;
828 }
829
830 static const struct sdhci_pci_fixes sdhci_syskt = {
831 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
832 .probe = syskt_probe,
833 .probe_slot = syskt_probe_slot,
834 };
835
836 static int via_probe(struct sdhci_pci_chip *chip)
837 {
838 if (chip->pdev->revision == 0x10)
839 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
840
841 return 0;
842 }
843
844 static const struct sdhci_pci_fixes sdhci_via = {
845 .probe = via_probe,
846 };
847
848 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
849 {
850 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
851 return 0;
852 }
853
854 static const struct sdhci_pci_fixes sdhci_rtsx = {
855 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
856 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
857 SDHCI_QUIRK2_BROKEN_DDR50,
858 .probe_slot = rtsx_probe_slot,
859 };
860
861 /*AMD chipset generation*/
862 enum amd_chipset_gen {
863 AMD_CHIPSET_BEFORE_ML,
864 AMD_CHIPSET_CZ,
865 AMD_CHIPSET_NL,
866 AMD_CHIPSET_UNKNOWN,
867 };
868
869 static int amd_probe(struct sdhci_pci_chip *chip)
870 {
871 struct pci_dev *smbus_dev;
872 enum amd_chipset_gen gen;
873
874 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
875 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
876 if (smbus_dev) {
877 gen = AMD_CHIPSET_BEFORE_ML;
878 } else {
879 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
880 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
881 if (smbus_dev) {
882 if (smbus_dev->revision < 0x51)
883 gen = AMD_CHIPSET_CZ;
884 else
885 gen = AMD_CHIPSET_NL;
886 } else {
887 gen = AMD_CHIPSET_UNKNOWN;
888 }
889 }
890
891 if ((gen == AMD_CHIPSET_BEFORE_ML) || (gen == AMD_CHIPSET_CZ)) {
892 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
893 chip->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
894 }
895
896 return 0;
897 }
898
899 static const struct sdhci_pci_fixes sdhci_amd = {
900 .probe = amd_probe,
901 };
902
903 static const struct pci_device_id pci_ids[] = {
904 {
905 .vendor = PCI_VENDOR_ID_RICOH,
906 .device = PCI_DEVICE_ID_RICOH_R5C822,
907 .subvendor = PCI_ANY_ID,
908 .subdevice = PCI_ANY_ID,
909 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
910 },
911
912 {
913 .vendor = PCI_VENDOR_ID_RICOH,
914 .device = 0x843,
915 .subvendor = PCI_ANY_ID,
916 .subdevice = PCI_ANY_ID,
917 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
918 },
919
920 {
921 .vendor = PCI_VENDOR_ID_RICOH,
922 .device = 0xe822,
923 .subvendor = PCI_ANY_ID,
924 .subdevice = PCI_ANY_ID,
925 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
926 },
927
928 {
929 .vendor = PCI_VENDOR_ID_RICOH,
930 .device = 0xe823,
931 .subvendor = PCI_ANY_ID,
932 .subdevice = PCI_ANY_ID,
933 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
934 },
935
936 {
937 .vendor = PCI_VENDOR_ID_ENE,
938 .device = PCI_DEVICE_ID_ENE_CB712_SD,
939 .subvendor = PCI_ANY_ID,
940 .subdevice = PCI_ANY_ID,
941 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
942 },
943
944 {
945 .vendor = PCI_VENDOR_ID_ENE,
946 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
947 .subvendor = PCI_ANY_ID,
948 .subdevice = PCI_ANY_ID,
949 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
950 },
951
952 {
953 .vendor = PCI_VENDOR_ID_ENE,
954 .device = PCI_DEVICE_ID_ENE_CB714_SD,
955 .subvendor = PCI_ANY_ID,
956 .subdevice = PCI_ANY_ID,
957 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
958 },
959
960 {
961 .vendor = PCI_VENDOR_ID_ENE,
962 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
963 .subvendor = PCI_ANY_ID,
964 .subdevice = PCI_ANY_ID,
965 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
966 },
967
968 {
969 .vendor = PCI_VENDOR_ID_MARVELL,
970 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
971 .subvendor = PCI_ANY_ID,
972 .subdevice = PCI_ANY_ID,
973 .driver_data = (kernel_ulong_t)&sdhci_cafe,
974 },
975
976 {
977 .vendor = PCI_VENDOR_ID_JMICRON,
978 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
979 .subvendor = PCI_ANY_ID,
980 .subdevice = PCI_ANY_ID,
981 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
982 },
983
984 {
985 .vendor = PCI_VENDOR_ID_JMICRON,
986 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
987 .subvendor = PCI_ANY_ID,
988 .subdevice = PCI_ANY_ID,
989 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
990 },
991
992 {
993 .vendor = PCI_VENDOR_ID_JMICRON,
994 .device = PCI_DEVICE_ID_JMICRON_JMB388_SD,
995 .subvendor = PCI_ANY_ID,
996 .subdevice = PCI_ANY_ID,
997 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
998 },
999
1000 {
1001 .vendor = PCI_VENDOR_ID_JMICRON,
1002 .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD,
1003 .subvendor = PCI_ANY_ID,
1004 .subdevice = PCI_ANY_ID,
1005 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
1006 },
1007
1008 {
1009 .vendor = PCI_VENDOR_ID_SYSKONNECT,
1010 .device = 0x8000,
1011 .subvendor = PCI_ANY_ID,
1012 .subdevice = PCI_ANY_ID,
1013 .driver_data = (kernel_ulong_t)&sdhci_syskt,
1014 },
1015
1016 {
1017 .vendor = PCI_VENDOR_ID_VIA,
1018 .device = 0x95d0,
1019 .subvendor = PCI_ANY_ID,
1020 .subdevice = PCI_ANY_ID,
1021 .driver_data = (kernel_ulong_t)&sdhci_via,
1022 },
1023
1024 {
1025 .vendor = PCI_VENDOR_ID_REALTEK,
1026 .device = 0x5250,
1027 .subvendor = PCI_ANY_ID,
1028 .subdevice = PCI_ANY_ID,
1029 .driver_data = (kernel_ulong_t)&sdhci_rtsx,
1030 },
1031
1032 {
1033 .vendor = PCI_VENDOR_ID_INTEL,
1034 .device = PCI_DEVICE_ID_INTEL_QRK_SD,
1035 .subvendor = PCI_ANY_ID,
1036 .subdevice = PCI_ANY_ID,
1037 .driver_data = (kernel_ulong_t)&sdhci_intel_qrk,
1038 },
1039
1040 {
1041 .vendor = PCI_VENDOR_ID_INTEL,
1042 .device = PCI_DEVICE_ID_INTEL_MRST_SD0,
1043 .subvendor = PCI_ANY_ID,
1044 .subdevice = PCI_ANY_ID,
1045 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0,
1046 },
1047
1048 {
1049 .vendor = PCI_VENDOR_ID_INTEL,
1050 .device = PCI_DEVICE_ID_INTEL_MRST_SD1,
1051 .subvendor = PCI_ANY_ID,
1052 .subdevice = PCI_ANY_ID,
1053 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
1054 },
1055
1056 {
1057 .vendor = PCI_VENDOR_ID_INTEL,
1058 .device = PCI_DEVICE_ID_INTEL_MRST_SD2,
1059 .subvendor = PCI_ANY_ID,
1060 .subdevice = PCI_ANY_ID,
1061 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
1062 },
1063
1064 {
1065 .vendor = PCI_VENDOR_ID_INTEL,
1066 .device = PCI_DEVICE_ID_INTEL_MFD_SD,
1067 .subvendor = PCI_ANY_ID,
1068 .subdevice = PCI_ANY_ID,
1069 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
1070 },
1071
1072 {
1073 .vendor = PCI_VENDOR_ID_INTEL,
1074 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1,
1075 .subvendor = PCI_ANY_ID,
1076 .subdevice = PCI_ANY_ID,
1077 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1078 },
1079
1080 {
1081 .vendor = PCI_VENDOR_ID_INTEL,
1082 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2,
1083 .subvendor = PCI_ANY_ID,
1084 .subdevice = PCI_ANY_ID,
1085 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1086 },
1087
1088 {
1089 .vendor = PCI_VENDOR_ID_INTEL,
1090 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0,
1091 .subvendor = PCI_ANY_ID,
1092 .subdevice = PCI_ANY_ID,
1093 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1094 },
1095
1096 {
1097 .vendor = PCI_VENDOR_ID_INTEL,
1098 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1,
1099 .subvendor = PCI_ANY_ID,
1100 .subdevice = PCI_ANY_ID,
1101 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1102 },
1103
1104 {
1105 .vendor = PCI_VENDOR_ID_INTEL,
1106 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
1107 .subvendor = PCI_ANY_ID,
1108 .subdevice = PCI_ANY_ID,
1109 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
1110 },
1111
1112 {
1113 .vendor = PCI_VENDOR_ID_INTEL,
1114 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
1115 .subvendor = PCI_ANY_ID,
1116 .subdevice = PCI_ANY_ID,
1117 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
1118 },
1119
1120 {
1121 .vendor = PCI_VENDOR_ID_INTEL,
1122 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC,
1123 .subvendor = PCI_ANY_ID,
1124 .subdevice = PCI_ANY_ID,
1125 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1126 },
1127
1128 {
1129 .vendor = PCI_VENDOR_ID_INTEL,
1130 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
1131 .subvendor = PCI_VENDOR_ID_NI,
1132 .subdevice = 0x7884,
1133 .driver_data = (kernel_ulong_t)&sdhci_ni_byt_sdio,
1134 },
1135
1136 {
1137 .vendor = PCI_VENDOR_ID_INTEL,
1138 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
1139 .subvendor = PCI_ANY_ID,
1140 .subdevice = PCI_ANY_ID,
1141 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1142 },
1143
1144 {
1145 .vendor = PCI_VENDOR_ID_INTEL,
1146 .device = PCI_DEVICE_ID_INTEL_BYT_SD,
1147 .subvendor = PCI_ANY_ID,
1148 .subdevice = PCI_ANY_ID,
1149 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1150 },
1151
1152 {
1153 .vendor = PCI_VENDOR_ID_INTEL,
1154 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC2,
1155 .subvendor = PCI_ANY_ID,
1156 .subdevice = PCI_ANY_ID,
1157 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1158 },
1159
1160 {
1161 .vendor = PCI_VENDOR_ID_INTEL,
1162 .device = PCI_DEVICE_ID_INTEL_BSW_EMMC,
1163 .subvendor = PCI_ANY_ID,
1164 .subdevice = PCI_ANY_ID,
1165 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1166 },
1167
1168 {
1169 .vendor = PCI_VENDOR_ID_INTEL,
1170 .device = PCI_DEVICE_ID_INTEL_BSW_SDIO,
1171 .subvendor = PCI_ANY_ID,
1172 .subdevice = PCI_ANY_ID,
1173 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1174 },
1175
1176 {
1177 .vendor = PCI_VENDOR_ID_INTEL,
1178 .device = PCI_DEVICE_ID_INTEL_BSW_SD,
1179 .subvendor = PCI_ANY_ID,
1180 .subdevice = PCI_ANY_ID,
1181 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1182 },
1183
1184 {
1185 .vendor = PCI_VENDOR_ID_INTEL,
1186 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO0,
1187 .subvendor = PCI_ANY_ID,
1188 .subdevice = PCI_ANY_ID,
1189 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
1190 },
1191
1192 {
1193 .vendor = PCI_VENDOR_ID_INTEL,
1194 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO1,
1195 .subvendor = PCI_ANY_ID,
1196 .subdevice = PCI_ANY_ID,
1197 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1198 },
1199
1200 {
1201 .vendor = PCI_VENDOR_ID_INTEL,
1202 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO2,
1203 .subvendor = PCI_ANY_ID,
1204 .subdevice = PCI_ANY_ID,
1205 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1206 },
1207
1208 {
1209 .vendor = PCI_VENDOR_ID_INTEL,
1210 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC0,
1211 .subvendor = PCI_ANY_ID,
1212 .subdevice = PCI_ANY_ID,
1213 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1214 },
1215
1216 {
1217 .vendor = PCI_VENDOR_ID_INTEL,
1218 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC1,
1219 .subvendor = PCI_ANY_ID,
1220 .subdevice = PCI_ANY_ID,
1221 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1222 },
1223
1224 {
1225 .vendor = PCI_VENDOR_ID_INTEL,
1226 .device = PCI_DEVICE_ID_INTEL_MRFLD_MMC,
1227 .subvendor = PCI_ANY_ID,
1228 .subdevice = PCI_ANY_ID,
1229 .driver_data = (kernel_ulong_t)&sdhci_intel_mrfld_mmc,
1230 },
1231
1232 {
1233 .vendor = PCI_VENDOR_ID_INTEL,
1234 .device = PCI_DEVICE_ID_INTEL_SPT_EMMC,
1235 .subvendor = PCI_ANY_ID,
1236 .subdevice = PCI_ANY_ID,
1237 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1238 },
1239
1240 {
1241 .vendor = PCI_VENDOR_ID_INTEL,
1242 .device = PCI_DEVICE_ID_INTEL_SPT_SDIO,
1243 .subvendor = PCI_ANY_ID,
1244 .subdevice = PCI_ANY_ID,
1245 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1246 },
1247
1248 {
1249 .vendor = PCI_VENDOR_ID_INTEL,
1250 .device = PCI_DEVICE_ID_INTEL_SPT_SD,
1251 .subvendor = PCI_ANY_ID,
1252 .subdevice = PCI_ANY_ID,
1253 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1254 },
1255
1256 {
1257 .vendor = PCI_VENDOR_ID_INTEL,
1258 .device = PCI_DEVICE_ID_INTEL_DNV_EMMC,
1259 .subvendor = PCI_ANY_ID,
1260 .subdevice = PCI_ANY_ID,
1261 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1262 },
1263
1264 {
1265 .vendor = PCI_VENDOR_ID_INTEL,
1266 .device = PCI_DEVICE_ID_INTEL_BXT_EMMC,
1267 .subvendor = PCI_ANY_ID,
1268 .subdevice = PCI_ANY_ID,
1269 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1270 },
1271
1272 {
1273 .vendor = PCI_VENDOR_ID_INTEL,
1274 .device = PCI_DEVICE_ID_INTEL_BXT_SDIO,
1275 .subvendor = PCI_ANY_ID,
1276 .subdevice = PCI_ANY_ID,
1277 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1278 },
1279
1280 {
1281 .vendor = PCI_VENDOR_ID_INTEL,
1282 .device = PCI_DEVICE_ID_INTEL_BXT_SD,
1283 .subvendor = PCI_ANY_ID,
1284 .subdevice = PCI_ANY_ID,
1285 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1286 },
1287
1288 {
1289 .vendor = PCI_VENDOR_ID_INTEL,
1290 .device = PCI_DEVICE_ID_INTEL_BXTM_EMMC,
1291 .subvendor = PCI_ANY_ID,
1292 .subdevice = PCI_ANY_ID,
1293 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1294 },
1295
1296 {
1297 .vendor = PCI_VENDOR_ID_INTEL,
1298 .device = PCI_DEVICE_ID_INTEL_BXTM_SDIO,
1299 .subvendor = PCI_ANY_ID,
1300 .subdevice = PCI_ANY_ID,
1301 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1302 },
1303
1304 {
1305 .vendor = PCI_VENDOR_ID_INTEL,
1306 .device = PCI_DEVICE_ID_INTEL_BXTM_SD,
1307 .subvendor = PCI_ANY_ID,
1308 .subdevice = PCI_ANY_ID,
1309 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1310 },
1311
1312 {
1313 .vendor = PCI_VENDOR_ID_INTEL,
1314 .device = PCI_DEVICE_ID_INTEL_APL_EMMC,
1315 .subvendor = PCI_ANY_ID,
1316 .subdevice = PCI_ANY_ID,
1317 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1318 },
1319
1320 {
1321 .vendor = PCI_VENDOR_ID_INTEL,
1322 .device = PCI_DEVICE_ID_INTEL_APL_SDIO,
1323 .subvendor = PCI_ANY_ID,
1324 .subdevice = PCI_ANY_ID,
1325 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1326 },
1327
1328 {
1329 .vendor = PCI_VENDOR_ID_INTEL,
1330 .device = PCI_DEVICE_ID_INTEL_APL_SD,
1331 .subvendor = PCI_ANY_ID,
1332 .subdevice = PCI_ANY_ID,
1333 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1334 },
1335
1336 {
1337 .vendor = PCI_VENDOR_ID_INTEL,
1338 .device = PCI_DEVICE_ID_INTEL_GLK_EMMC,
1339 .subvendor = PCI_ANY_ID,
1340 .subdevice = PCI_ANY_ID,
1341 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1342 },
1343
1344 {
1345 .vendor = PCI_VENDOR_ID_INTEL,
1346 .device = PCI_DEVICE_ID_INTEL_GLK_SDIO,
1347 .subvendor = PCI_ANY_ID,
1348 .subdevice = PCI_ANY_ID,
1349 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1350 },
1351
1352 {
1353 .vendor = PCI_VENDOR_ID_INTEL,
1354 .device = PCI_DEVICE_ID_INTEL_GLK_SD,
1355 .subvendor = PCI_ANY_ID,
1356 .subdevice = PCI_ANY_ID,
1357 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1358 },
1359
1360 {
1361 .vendor = PCI_VENDOR_ID_O2,
1362 .device = PCI_DEVICE_ID_O2_8120,
1363 .subvendor = PCI_ANY_ID,
1364 .subdevice = PCI_ANY_ID,
1365 .driver_data = (kernel_ulong_t)&sdhci_o2,
1366 },
1367
1368 {
1369 .vendor = PCI_VENDOR_ID_O2,
1370 .device = PCI_DEVICE_ID_O2_8220,
1371 .subvendor = PCI_ANY_ID,
1372 .subdevice = PCI_ANY_ID,
1373 .driver_data = (kernel_ulong_t)&sdhci_o2,
1374 },
1375
1376 {
1377 .vendor = PCI_VENDOR_ID_O2,
1378 .device = PCI_DEVICE_ID_O2_8221,
1379 .subvendor = PCI_ANY_ID,
1380 .subdevice = PCI_ANY_ID,
1381 .driver_data = (kernel_ulong_t)&sdhci_o2,
1382 },
1383
1384 {
1385 .vendor = PCI_VENDOR_ID_O2,
1386 .device = PCI_DEVICE_ID_O2_8320,
1387 .subvendor = PCI_ANY_ID,
1388 .subdevice = PCI_ANY_ID,
1389 .driver_data = (kernel_ulong_t)&sdhci_o2,
1390 },
1391
1392 {
1393 .vendor = PCI_VENDOR_ID_O2,
1394 .device = PCI_DEVICE_ID_O2_8321,
1395 .subvendor = PCI_ANY_ID,
1396 .subdevice = PCI_ANY_ID,
1397 .driver_data = (kernel_ulong_t)&sdhci_o2,
1398 },
1399
1400 {
1401 .vendor = PCI_VENDOR_ID_O2,
1402 .device = PCI_DEVICE_ID_O2_FUJIN2,
1403 .subvendor = PCI_ANY_ID,
1404 .subdevice = PCI_ANY_ID,
1405 .driver_data = (kernel_ulong_t)&sdhci_o2,
1406 },
1407
1408 {
1409 .vendor = PCI_VENDOR_ID_O2,
1410 .device = PCI_DEVICE_ID_O2_SDS0,
1411 .subvendor = PCI_ANY_ID,
1412 .subdevice = PCI_ANY_ID,
1413 .driver_data = (kernel_ulong_t)&sdhci_o2,
1414 },
1415
1416 {
1417 .vendor = PCI_VENDOR_ID_O2,
1418 .device = PCI_DEVICE_ID_O2_SDS1,
1419 .subvendor = PCI_ANY_ID,
1420 .subdevice = PCI_ANY_ID,
1421 .driver_data = (kernel_ulong_t)&sdhci_o2,
1422 },
1423
1424 {
1425 .vendor = PCI_VENDOR_ID_O2,
1426 .device = PCI_DEVICE_ID_O2_SEABIRD0,
1427 .subvendor = PCI_ANY_ID,
1428 .subdevice = PCI_ANY_ID,
1429 .driver_data = (kernel_ulong_t)&sdhci_o2,
1430 },
1431
1432 {
1433 .vendor = PCI_VENDOR_ID_O2,
1434 .device = PCI_DEVICE_ID_O2_SEABIRD1,
1435 .subvendor = PCI_ANY_ID,
1436 .subdevice = PCI_ANY_ID,
1437 .driver_data = (kernel_ulong_t)&sdhci_o2,
1438 },
1439 {
1440 .vendor = PCI_VENDOR_ID_AMD,
1441 .device = PCI_ANY_ID,
1442 .class = PCI_CLASS_SYSTEM_SDHCI << 8,
1443 .class_mask = 0xFFFF00,
1444 .subvendor = PCI_ANY_ID,
1445 .subdevice = PCI_ANY_ID,
1446 .driver_data = (kernel_ulong_t)&sdhci_amd,
1447 },
1448 { /* Generic SD host controller */
1449 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
1450 },
1451
1452 { /* end: all zeroes */ },
1453 };
1454
1455 MODULE_DEVICE_TABLE(pci, pci_ids);
1456
1457 /*****************************************************************************\
1458 * *
1459 * SDHCI core callbacks *
1460 * *
1461 \*****************************************************************************/
1462
1463 static int sdhci_pci_enable_dma(struct sdhci_host *host)
1464 {
1465 struct sdhci_pci_slot *slot;
1466 struct pci_dev *pdev;
1467
1468 slot = sdhci_priv(host);
1469 pdev = slot->chip->pdev;
1470
1471 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1472 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1473 (host->flags & SDHCI_USE_SDMA)) {
1474 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1475 "doesn't fully claim to support it.\n");
1476 }
1477
1478 pci_set_master(pdev);
1479
1480 return 0;
1481 }
1482
1483 static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width)
1484 {
1485 u8 ctrl;
1486
1487 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
1488
1489 switch (width) {
1490 case MMC_BUS_WIDTH_8:
1491 ctrl |= SDHCI_CTRL_8BITBUS;
1492 ctrl &= ~SDHCI_CTRL_4BITBUS;
1493 break;
1494 case MMC_BUS_WIDTH_4:
1495 ctrl |= SDHCI_CTRL_4BITBUS;
1496 ctrl &= ~SDHCI_CTRL_8BITBUS;
1497 break;
1498 default:
1499 ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS);
1500 break;
1501 }
1502
1503 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
1504 }
1505
1506 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1507 {
1508 struct sdhci_pci_slot *slot = sdhci_priv(host);
1509 int rst_n_gpio = slot->rst_n_gpio;
1510
1511 if (!gpio_is_valid(rst_n_gpio))
1512 return;
1513 gpio_set_value_cansleep(rst_n_gpio, 0);
1514 /* For eMMC, minimum is 1us but give it 10us for good measure */
1515 udelay(10);
1516 gpio_set_value_cansleep(rst_n_gpio, 1);
1517 /* For eMMC, minimum is 200us but give it 300us for good measure */
1518 usleep_range(300, 1000);
1519 }
1520
1521 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1522 {
1523 struct sdhci_pci_slot *slot = sdhci_priv(host);
1524
1525 if (slot->hw_reset)
1526 slot->hw_reset(host);
1527 }
1528
1529 static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
1530 struct mmc_card *card,
1531 unsigned int max_dtr, int host_drv,
1532 int card_drv, int *drv_type)
1533 {
1534 struct sdhci_pci_slot *slot = sdhci_priv(host);
1535
1536 if (!slot->select_drive_strength)
1537 return 0;
1538
1539 return slot->select_drive_strength(host, card, max_dtr, host_drv,
1540 card_drv, drv_type);
1541 }
1542
1543 static const struct sdhci_ops sdhci_pci_ops = {
1544 .set_clock = sdhci_set_clock,
1545 .enable_dma = sdhci_pci_enable_dma,
1546 .set_bus_width = sdhci_pci_set_bus_width,
1547 .reset = sdhci_reset,
1548 .set_uhs_signaling = sdhci_set_uhs_signaling,
1549 .hw_reset = sdhci_pci_hw_reset,
1550 .select_drive_strength = sdhci_pci_select_drive_strength,
1551 };
1552
1553 /*****************************************************************************\
1554 * *
1555 * Suspend/resume *
1556 * *
1557 \*****************************************************************************/
1558
1559 #ifdef CONFIG_PM_SLEEP
1560 static int sdhci_pci_suspend(struct device *dev)
1561 {
1562 struct pci_dev *pdev = to_pci_dev(dev);
1563 struct sdhci_pci_chip *chip;
1564 struct sdhci_pci_slot *slot;
1565 mmc_pm_flag_t slot_pm_flags;
1566 mmc_pm_flag_t pm_flags = 0;
1567 int i, ret;
1568
1569 chip = pci_get_drvdata(pdev);
1570 if (!chip)
1571 return 0;
1572
1573 for (i = 0; i < chip->num_slots; i++) {
1574 slot = chip->slots[i];
1575 if (!slot)
1576 continue;
1577
1578 ret = sdhci_suspend_host(slot->host);
1579
1580 if (ret)
1581 goto err_pci_suspend;
1582
1583 slot_pm_flags = slot->host->mmc->pm_flags;
1584 if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1585 sdhci_enable_irq_wakeups(slot->host);
1586
1587 pm_flags |= slot_pm_flags;
1588 }
1589
1590 if (chip->fixes && chip->fixes->suspend) {
1591 ret = chip->fixes->suspend(chip);
1592 if (ret)
1593 goto err_pci_suspend;
1594 }
1595
1596 if (pm_flags & MMC_PM_KEEP_POWER) {
1597 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1598 device_init_wakeup(dev, true);
1599 else
1600 device_init_wakeup(dev, false);
1601 } else
1602 device_init_wakeup(dev, false);
1603
1604 return 0;
1605
1606 err_pci_suspend:
1607 while (--i >= 0)
1608 sdhci_resume_host(chip->slots[i]->host);
1609 return ret;
1610 }
1611
1612 static int sdhci_pci_resume(struct device *dev)
1613 {
1614 struct pci_dev *pdev = to_pci_dev(dev);
1615 struct sdhci_pci_chip *chip;
1616 struct sdhci_pci_slot *slot;
1617 int i, ret;
1618
1619 chip = pci_get_drvdata(pdev);
1620 if (!chip)
1621 return 0;
1622
1623 if (chip->fixes && chip->fixes->resume) {
1624 ret = chip->fixes->resume(chip);
1625 if (ret)
1626 return ret;
1627 }
1628
1629 for (i = 0; i < chip->num_slots; i++) {
1630 slot = chip->slots[i];
1631 if (!slot)
1632 continue;
1633
1634 ret = sdhci_resume_host(slot->host);
1635 if (ret)
1636 return ret;
1637 }
1638
1639 return 0;
1640 }
1641 #endif
1642
1643 #ifdef CONFIG_PM
1644 static int sdhci_pci_runtime_suspend(struct device *dev)
1645 {
1646 struct pci_dev *pdev = to_pci_dev(dev);
1647 struct sdhci_pci_chip *chip;
1648 struct sdhci_pci_slot *slot;
1649 int i, ret;
1650
1651 chip = pci_get_drvdata(pdev);
1652 if (!chip)
1653 return 0;
1654
1655 for (i = 0; i < chip->num_slots; i++) {
1656 slot = chip->slots[i];
1657 if (!slot)
1658 continue;
1659
1660 ret = sdhci_runtime_suspend_host(slot->host);
1661
1662 if (ret)
1663 goto err_pci_runtime_suspend;
1664 }
1665
1666 if (chip->fixes && chip->fixes->suspend) {
1667 ret = chip->fixes->suspend(chip);
1668 if (ret)
1669 goto err_pci_runtime_suspend;
1670 }
1671
1672 return 0;
1673
1674 err_pci_runtime_suspend:
1675 while (--i >= 0)
1676 sdhci_runtime_resume_host(chip->slots[i]->host);
1677 return ret;
1678 }
1679
1680 static int sdhci_pci_runtime_resume(struct device *dev)
1681 {
1682 struct pci_dev *pdev = to_pci_dev(dev);
1683 struct sdhci_pci_chip *chip;
1684 struct sdhci_pci_slot *slot;
1685 int i, ret;
1686
1687 chip = pci_get_drvdata(pdev);
1688 if (!chip)
1689 return 0;
1690
1691 if (chip->fixes && chip->fixes->resume) {
1692 ret = chip->fixes->resume(chip);
1693 if (ret)
1694 return ret;
1695 }
1696
1697 for (i = 0; i < chip->num_slots; i++) {
1698 slot = chip->slots[i];
1699 if (!slot)
1700 continue;
1701
1702 ret = sdhci_runtime_resume_host(slot->host);
1703 if (ret)
1704 return ret;
1705 }
1706
1707 return 0;
1708 }
1709 #endif
1710
1711 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1712 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
1713 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1714 sdhci_pci_runtime_resume, NULL)
1715 };
1716
1717 /*****************************************************************************\
1718 * *
1719 * Device probing/removal *
1720 * *
1721 \*****************************************************************************/
1722
1723 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1724 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1725 int slotno)
1726 {
1727 struct sdhci_pci_slot *slot;
1728 struct sdhci_host *host;
1729 int ret, bar = first_bar + slotno;
1730
1731 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1732 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1733 return ERR_PTR(-ENODEV);
1734 }
1735
1736 if (pci_resource_len(pdev, bar) < 0x100) {
1737 dev_err(&pdev->dev, "Invalid iomem size. You may "
1738 "experience problems.\n");
1739 }
1740
1741 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1742 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1743 return ERR_PTR(-ENODEV);
1744 }
1745
1746 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1747 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1748 return ERR_PTR(-ENODEV);
1749 }
1750
1751 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
1752 if (IS_ERR(host)) {
1753 dev_err(&pdev->dev, "cannot allocate host\n");
1754 return ERR_CAST(host);
1755 }
1756
1757 slot = sdhci_priv(host);
1758
1759 slot->chip = chip;
1760 slot->host = host;
1761 slot->rst_n_gpio = -EINVAL;
1762 slot->cd_gpio = -EINVAL;
1763 slot->cd_idx = -1;
1764
1765 /* Retrieve platform data if there is any */
1766 if (*sdhci_pci_get_data)
1767 slot->data = sdhci_pci_get_data(pdev, slotno);
1768
1769 if (slot->data) {
1770 if (slot->data->setup) {
1771 ret = slot->data->setup(slot->data);
1772 if (ret) {
1773 dev_err(&pdev->dev, "platform setup failed\n");
1774 goto free;
1775 }
1776 }
1777 slot->rst_n_gpio = slot->data->rst_n_gpio;
1778 slot->cd_gpio = slot->data->cd_gpio;
1779 }
1780
1781 host->hw_name = "PCI";
1782 host->ops = chip->fixes && chip->fixes->ops ?
1783 chip->fixes->ops :
1784 &sdhci_pci_ops;
1785 host->quirks = chip->quirks;
1786 host->quirks2 = chip->quirks2;
1787
1788 host->irq = pdev->irq;
1789
1790 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
1791 if (ret) {
1792 dev_err(&pdev->dev, "cannot request region\n");
1793 goto cleanup;
1794 }
1795
1796 host->ioaddr = pcim_iomap_table(pdev)[bar];
1797
1798 if (chip->fixes && chip->fixes->probe_slot) {
1799 ret = chip->fixes->probe_slot(slot);
1800 if (ret)
1801 goto cleanup;
1802 }
1803
1804 if (gpio_is_valid(slot->rst_n_gpio)) {
1805 if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) {
1806 gpio_direction_output(slot->rst_n_gpio, 1);
1807 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1808 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1809 } else {
1810 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1811 slot->rst_n_gpio = -EINVAL;
1812 }
1813 }
1814
1815 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1816 host->mmc->slotno = slotno;
1817 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1818
1819 if (slot->cd_idx >= 0) {
1820 ret = mmc_gpiod_request_cd(host->mmc, slot->cd_con_id, slot->cd_idx,
1821 slot->cd_override_level, 0, NULL);
1822 if (ret == -EPROBE_DEFER)
1823 goto remove;
1824
1825 if (ret) {
1826 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
1827 slot->cd_idx = -1;
1828 }
1829 }
1830
1831 ret = sdhci_add_host(host);
1832 if (ret)
1833 goto remove;
1834
1835 sdhci_pci_add_own_cd(slot);
1836
1837 /*
1838 * Check if the chip needs a separate GPIO for card detect to wake up
1839 * from runtime suspend. If it is not there, don't allow runtime PM.
1840 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1841 */
1842 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1843 !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
1844 chip->allow_runtime_pm = false;
1845
1846 return slot;
1847
1848 remove:
1849 if (chip->fixes && chip->fixes->remove_slot)
1850 chip->fixes->remove_slot(slot, 0);
1851
1852 cleanup:
1853 if (slot->data && slot->data->cleanup)
1854 slot->data->cleanup(slot->data);
1855
1856 free:
1857 sdhci_free_host(host);
1858
1859 return ERR_PTR(ret);
1860 }
1861
1862 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1863 {
1864 int dead;
1865 u32 scratch;
1866
1867 sdhci_pci_remove_own_cd(slot);
1868
1869 dead = 0;
1870 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1871 if (scratch == (u32)-1)
1872 dead = 1;
1873
1874 sdhci_remove_host(slot->host, dead);
1875
1876 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1877 slot->chip->fixes->remove_slot(slot, dead);
1878
1879 if (slot->data && slot->data->cleanup)
1880 slot->data->cleanup(slot->data);
1881
1882 sdhci_free_host(slot->host);
1883 }
1884
1885 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1886 {
1887 pm_suspend_ignore_children(dev, 1);
1888 pm_runtime_set_autosuspend_delay(dev, 50);
1889 pm_runtime_use_autosuspend(dev);
1890 pm_runtime_allow(dev);
1891 /* Stay active until mmc core scans for a card */
1892 pm_runtime_put_noidle(dev);
1893 }
1894
1895 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1896 {
1897 pm_runtime_forbid(dev);
1898 pm_runtime_get_noresume(dev);
1899 }
1900
1901 static int sdhci_pci_probe(struct pci_dev *pdev,
1902 const struct pci_device_id *ent)
1903 {
1904 struct sdhci_pci_chip *chip;
1905 struct sdhci_pci_slot *slot;
1906
1907 u8 slots, first_bar;
1908 int ret, i;
1909
1910 BUG_ON(pdev == NULL);
1911 BUG_ON(ent == NULL);
1912
1913 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1914 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1915
1916 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1917 if (ret)
1918 return ret;
1919
1920 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1921 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1922 if (slots == 0)
1923 return -ENODEV;
1924
1925 BUG_ON(slots > MAX_SLOTS);
1926
1927 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1928 if (ret)
1929 return ret;
1930
1931 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1932
1933 if (first_bar > 5) {
1934 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1935 return -ENODEV;
1936 }
1937
1938 ret = pcim_enable_device(pdev);
1939 if (ret)
1940 return ret;
1941
1942 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
1943 if (!chip)
1944 return -ENOMEM;
1945
1946 chip->pdev = pdev;
1947 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1948 if (chip->fixes) {
1949 chip->quirks = chip->fixes->quirks;
1950 chip->quirks2 = chip->fixes->quirks2;
1951 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1952 }
1953 chip->num_slots = slots;
1954
1955 pci_set_drvdata(pdev, chip);
1956
1957 if (chip->fixes && chip->fixes->probe) {
1958 ret = chip->fixes->probe(chip);
1959 if (ret)
1960 return ret;
1961 }
1962
1963 slots = chip->num_slots; /* Quirk may have changed this */
1964
1965 for (i = 0; i < slots; i++) {
1966 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1967 if (IS_ERR(slot)) {
1968 for (i--; i >= 0; i--)
1969 sdhci_pci_remove_slot(chip->slots[i]);
1970 return PTR_ERR(slot);
1971 }
1972
1973 chip->slots[i] = slot;
1974 }
1975
1976 if (chip->allow_runtime_pm)
1977 sdhci_pci_runtime_pm_allow(&pdev->dev);
1978
1979 return 0;
1980 }
1981
1982 static void sdhci_pci_remove(struct pci_dev *pdev)
1983 {
1984 int i;
1985 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1986
1987 if (chip->allow_runtime_pm)
1988 sdhci_pci_runtime_pm_forbid(&pdev->dev);
1989
1990 for (i = 0; i < chip->num_slots; i++)
1991 sdhci_pci_remove_slot(chip->slots[i]);
1992 }
1993
1994 static struct pci_driver sdhci_driver = {
1995 .name = "sdhci-pci",
1996 .id_table = pci_ids,
1997 .probe = sdhci_pci_probe,
1998 .remove = sdhci_pci_remove,
1999 .driver = {
2000 .pm = &sdhci_pci_pm_ops
2001 },
2002 };
2003
2004 module_pci_driver(sdhci_driver);
2005
2006 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
2007 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2008 MODULE_LICENSE("GPL");
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