1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
4 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
6 * Thanks to the following companies for their support:
8 * - JMicron (hardware and technical support)
11 #include <linux/bitfield.h>
12 #include <linux/string.h>
13 #include <linux/delay.h>
14 #include <linux/highmem.h>
15 #include <linux/module.h>
16 #include <linux/pci.h>
17 #include <linux/dma-mapping.h>
18 #include <linux/slab.h>
19 #include <linux/device.h>
20 #include <linux/scatterlist.h>
22 #include <linux/iopoll.h>
23 #include <linux/gpio.h>
24 #include <linux/pm_runtime.h>
25 #include <linux/pm_qos.h>
26 #include <linux/debugfs.h>
27 #include <linux/acpi.h>
28 #include <linux/dmi.h>
30 #include <linux/mmc/host.h>
31 #include <linux/mmc/mmc.h>
32 #include <linux/mmc/slot-gpio.h>
35 #include <asm/iosf_mbi.h>
41 #include "sdhci-cqhci.h"
42 #include "sdhci-pci.h"
44 static void sdhci_pci_hw_reset(struct sdhci_host *host);
46 #ifdef CONFIG_PM_SLEEP
47 static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
49 mmc_pm_flag_t pm_flags = 0;
50 bool cap_cd_wake = false;
53 for (i = 0; i < chip->num_slots; i++) {
54 struct sdhci_pci_slot *slot = chip->slots[i];
57 pm_flags |= slot->host->mmc->pm_flags;
58 if (slot->host->mmc->caps & MMC_CAP_CD_WAKE)
63 if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ))
64 return device_wakeup_enable(&chip->pdev->dev);
65 else if (!cap_cd_wake)
66 return device_wakeup_disable(&chip->pdev->dev);
71 static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
75 sdhci_pci_init_wakeup(chip);
77 for (i = 0; i < chip->num_slots; i++) {
78 struct sdhci_pci_slot *slot = chip->slots[i];
79 struct sdhci_host *host;
86 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
87 mmc_retune_needed(host->mmc);
89 ret = sdhci_suspend_host(host);
93 if (device_may_wakeup(&chip->pdev->dev))
94 mmc_gpio_set_cd_wake(host->mmc, true);
101 sdhci_resume_host(chip->slots[i]->host);
105 int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
107 struct sdhci_pci_slot *slot;
110 for (i = 0; i < chip->num_slots; i++) {
111 slot = chip->slots[i];
115 ret = sdhci_resume_host(slot->host);
119 mmc_gpio_set_cd_wake(slot->host->mmc, false);
125 static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip)
129 ret = cqhci_suspend(chip->slots[0]->host->mmc);
133 return sdhci_pci_suspend_host(chip);
136 static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip)
140 ret = sdhci_pci_resume_host(chip);
144 return cqhci_resume(chip->slots[0]->host->mmc);
149 static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
151 struct sdhci_pci_slot *slot;
152 struct sdhci_host *host;
155 for (i = 0; i < chip->num_slots; i++) {
156 slot = chip->slots[i];
162 ret = sdhci_runtime_suspend_host(host);
164 goto err_pci_runtime_suspend;
166 if (chip->rpm_retune &&
167 host->tuning_mode != SDHCI_TUNING_MODE_3)
168 mmc_retune_needed(host->mmc);
173 err_pci_runtime_suspend:
175 sdhci_runtime_resume_host(chip->slots[i]->host, 0);
179 static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
181 struct sdhci_pci_slot *slot;
184 for (i = 0; i < chip->num_slots; i++) {
185 slot = chip->slots[i];
189 ret = sdhci_runtime_resume_host(slot->host, 0);
197 static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip)
201 ret = cqhci_suspend(chip->slots[0]->host->mmc);
205 return sdhci_pci_runtime_suspend_host(chip);
208 static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip)
212 ret = sdhci_pci_runtime_resume_host(chip);
216 return cqhci_resume(chip->slots[0]->host->mmc);
220 static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask)
225 if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
228 cqhci_irq(host->mmc, intmask, cmd_error, data_error);
233 static void sdhci_pci_dumpregs(struct mmc_host *mmc)
235 sdhci_dumpregs(mmc_priv(mmc));
238 /*****************************************************************************\
240 * Hardware specific quirk handling *
242 \*****************************************************************************/
244 static int ricoh_probe(struct sdhci_pci_chip *chip)
246 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
247 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
248 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
252 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
255 FIELD_PREP(SDHCI_TIMEOUT_CLK_MASK, 0x21) |
256 FIELD_PREP(SDHCI_CLOCK_BASE_MASK, 0x21) |
257 SDHCI_TIMEOUT_CLK_UNIT |
264 #ifdef CONFIG_PM_SLEEP
265 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
267 /* Apply a delay to allow controller to settle */
268 /* Otherwise it becomes confused if card state changed
271 return sdhci_pci_resume_host(chip);
275 static const struct sdhci_pci_fixes sdhci_ricoh = {
276 .probe = ricoh_probe,
277 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
278 SDHCI_QUIRK_FORCE_DMA |
279 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
282 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
283 .probe_slot = ricoh_mmc_probe_slot,
284 #ifdef CONFIG_PM_SLEEP
285 .resume = ricoh_mmc_resume,
287 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
288 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
289 SDHCI_QUIRK_NO_CARD_NO_RESET |
290 SDHCI_QUIRK_MISSING_CAPS
293 static void ene_714_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
295 struct sdhci_host *host = mmc_priv(mmc);
297 sdhci_set_ios(mmc, ios);
300 * Some (ENE) controllers misbehave on some ios operations,
301 * signalling timeout and CRC errors even on CMD0. Resetting
302 * it on each ios seems to solve the problem.
304 if (!(host->flags & SDHCI_DEVICE_DEAD))
305 sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
308 static int ene_714_probe_slot(struct sdhci_pci_slot *slot)
310 slot->host->mmc_host_ops.set_ios = ene_714_set_ios;
314 static const struct sdhci_pci_fixes sdhci_ene_712 = {
315 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
316 SDHCI_QUIRK_BROKEN_DMA,
319 static const struct sdhci_pci_fixes sdhci_ene_714 = {
320 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
321 SDHCI_QUIRK_BROKEN_DMA,
322 .probe_slot = ene_714_probe_slot,
325 static const struct sdhci_pci_fixes sdhci_cafe = {
326 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
327 SDHCI_QUIRK_NO_BUSY_IRQ |
328 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
329 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
332 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
333 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
336 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
338 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
343 * ADMA operation is disabled for Moorestown platform due to
346 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
349 * slots number is fixed here for MRST as SDIO3/5 are never used and
350 * have hardware bugs.
356 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
358 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
362 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
364 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
365 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
369 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
371 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
375 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
376 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
377 .probe_slot = mrst_hc_probe_slot,
380 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
381 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
382 .probe = mrst_hc_probe,
385 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
386 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
387 .allow_runtime_pm = true,
388 .own_cd_for_runtime_pm = true,
391 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
392 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
393 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
394 .allow_runtime_pm = true,
395 .probe_slot = mfd_sdio_probe_slot,
398 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
399 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
400 .allow_runtime_pm = true,
401 .probe_slot = mfd_emmc_probe_slot,
404 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
405 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
406 .probe_slot = pch_hc_probe_slot,
411 #define BYT_IOSF_SCCEP 0x63
412 #define BYT_IOSF_OCP_NETCTRL0 0x1078
413 #define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8)
415 static void byt_ocp_setting(struct pci_dev *pdev)
419 if (pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC &&
420 pdev->device != PCI_DEVICE_ID_INTEL_BYT_SDIO &&
421 pdev->device != PCI_DEVICE_ID_INTEL_BYT_SD &&
422 pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC2)
425 if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
427 dev_err(&pdev->dev, "%s read error\n", __func__);
431 if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE))
434 val &= ~BYT_IOSF_OCP_TIMEOUT_BASE;
436 if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0,
438 dev_err(&pdev->dev, "%s write error\n", __func__);
442 dev_dbg(&pdev->dev, "%s completed\n", __func__);
447 static inline void byt_ocp_setting(struct pci_dev *pdev)
455 INTEL_DSM_V18_SWITCH = 3,
456 INTEL_DSM_V33_SWITCH = 4,
457 INTEL_DSM_DRV_STRENGTH = 9,
458 INTEL_DSM_D3_RETUNE = 10,
473 static const guid_t intel_dsm_guid =
474 GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
475 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
477 static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
478 unsigned int fn, u32 *result)
480 union acpi_object *obj;
484 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
488 if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
493 len = min_t(size_t, obj->buffer.length, 4);
496 memcpy(result, obj->buffer.pointer, len);
503 static int intel_dsm(struct intel_host *intel_host, struct device *dev,
504 unsigned int fn, u32 *result)
506 if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
509 return __intel_dsm(intel_host, dev, fn, result);
512 static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
513 struct mmc_host *mmc)
518 intel_host->d3_retune = true;
520 err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
522 pr_debug("%s: DSM not supported, error %d\n",
523 mmc_hostname(mmc), err);
527 pr_debug("%s: DSM function mask %#x\n",
528 mmc_hostname(mmc), intel_host->dsm_fns);
530 err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
531 intel_host->drv_strength = err ? 0 : val;
533 err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
534 intel_host->d3_retune = err ? true : !!val;
537 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
541 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
543 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
544 /* For eMMC, minimum is 1us but give it 9us for good measure */
547 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
548 /* For eMMC, minimum is 200us but give it 300us for good measure */
549 usleep_range(300, 1000);
552 static int intel_select_drive_strength(struct mmc_card *card,
553 unsigned int max_dtr, int host_drv,
554 int card_drv, int *drv_type)
556 struct sdhci_host *host = mmc_priv(card->host);
557 struct sdhci_pci_slot *slot = sdhci_priv(host);
558 struct intel_host *intel_host = sdhci_pci_priv(slot);
560 if (!(mmc_driver_type_mask(intel_host->drv_strength) & card_drv))
563 return intel_host->drv_strength;
566 static int bxt_get_cd(struct mmc_host *mmc)
568 int gpio_cd = mmc_gpio_get_cd(mmc);
573 return sdhci_get_cd_nogpio(mmc);
576 static int mrfld_get_cd(struct mmc_host *mmc)
578 return sdhci_get_cd_nogpio(mmc);
581 #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
582 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
584 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
587 struct sdhci_pci_slot *slot = sdhci_priv(host);
588 struct intel_host *intel_host = sdhci_pci_priv(slot);
593 * Bus power may control card power, but a full reset still may not
594 * reset the power, whereas a direct write to SDHCI_POWER_CONTROL can.
595 * That might be needed to initialize correctly, if the card was left
596 * powered on previously.
598 if (intel_host->needs_pwr_off) {
599 intel_host->needs_pwr_off = false;
600 if (mode != MMC_POWER_OFF) {
601 sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
602 usleep_range(10000, 12500);
606 sdhci_set_power(host, mode, vdd);
608 if (mode == MMC_POWER_OFF)
612 * Bus power might not enable after D3 -> D0 transition due to the
613 * present state not yet having propagated. Retry for up to 2ms.
615 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
616 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
617 if (reg & SDHCI_POWER_ON)
619 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
620 reg |= SDHCI_POWER_ON;
621 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
625 static void sdhci_intel_set_uhs_signaling(struct sdhci_host *host,
628 /* Set UHS timing to SDR25 for High Speed mode */
629 if (timing == MMC_TIMING_MMC_HS || timing == MMC_TIMING_SD_HS)
630 timing = MMC_TIMING_UHS_SDR25;
631 sdhci_set_uhs_signaling(host, timing);
634 #define INTEL_HS400_ES_REG 0x78
635 #define INTEL_HS400_ES_BIT BIT(0)
637 static void intel_hs400_enhanced_strobe(struct mmc_host *mmc,
640 struct sdhci_host *host = mmc_priv(mmc);
643 val = sdhci_readl(host, INTEL_HS400_ES_REG);
644 if (ios->enhanced_strobe)
645 val |= INTEL_HS400_ES_BIT;
647 val &= ~INTEL_HS400_ES_BIT;
648 sdhci_writel(host, val, INTEL_HS400_ES_REG);
651 static int intel_start_signal_voltage_switch(struct mmc_host *mmc,
654 struct device *dev = mmc_dev(mmc);
655 struct sdhci_host *host = mmc_priv(mmc);
656 struct sdhci_pci_slot *slot = sdhci_priv(host);
657 struct intel_host *intel_host = sdhci_pci_priv(slot);
662 err = sdhci_start_signal_voltage_switch(mmc, ios);
666 switch (ios->signal_voltage) {
667 case MMC_SIGNAL_VOLTAGE_330:
668 fn = INTEL_DSM_V33_SWITCH;
670 case MMC_SIGNAL_VOLTAGE_180:
671 fn = INTEL_DSM_V18_SWITCH;
677 err = intel_dsm(intel_host, dev, fn, &result);
678 pr_debug("%s: %s DSM fn %u error %d result %u\n",
679 mmc_hostname(mmc), __func__, fn, err, result);
684 static const struct sdhci_ops sdhci_intel_byt_ops = {
685 .set_clock = sdhci_set_clock,
686 .set_power = sdhci_intel_set_power,
687 .enable_dma = sdhci_pci_enable_dma,
688 .set_bus_width = sdhci_set_bus_width,
689 .reset = sdhci_reset,
690 .set_uhs_signaling = sdhci_intel_set_uhs_signaling,
691 .hw_reset = sdhci_pci_hw_reset,
694 static const struct sdhci_ops sdhci_intel_glk_ops = {
695 .set_clock = sdhci_set_clock,
696 .set_power = sdhci_intel_set_power,
697 .enable_dma = sdhci_pci_enable_dma,
698 .set_bus_width = sdhci_set_bus_width,
699 .reset = sdhci_and_cqhci_reset,
700 .set_uhs_signaling = sdhci_intel_set_uhs_signaling,
701 .hw_reset = sdhci_pci_hw_reset,
702 .irq = sdhci_cqhci_irq,
705 static void byt_read_dsm(struct sdhci_pci_slot *slot)
707 struct intel_host *intel_host = sdhci_pci_priv(slot);
708 struct device *dev = &slot->chip->pdev->dev;
709 struct mmc_host *mmc = slot->host->mmc;
711 intel_dsm_init(intel_host, dev, mmc);
712 slot->chip->rpm_retune = intel_host->d3_retune;
715 static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
717 int err = sdhci_execute_tuning(mmc, opcode);
718 struct sdhci_host *host = mmc_priv(mmc);
724 * Tuning can leave the IP in an active state (Buffer Read Enable bit
725 * set) which prevents the entry to low power states (i.e. S0i3). Data
726 * reset will clear it.
728 sdhci_reset(host, SDHCI_RESET_DATA);
733 #define INTEL_ACTIVELTR 0x804
734 #define INTEL_IDLELTR 0x808
736 #define INTEL_LTR_REQ BIT(15)
737 #define INTEL_LTR_SCALE_MASK GENMASK(11, 10)
738 #define INTEL_LTR_SCALE_1US (2 << 10)
739 #define INTEL_LTR_SCALE_32US (3 << 10)
740 #define INTEL_LTR_VALUE_MASK GENMASK(9, 0)
742 static void intel_cache_ltr(struct sdhci_pci_slot *slot)
744 struct intel_host *intel_host = sdhci_pci_priv(slot);
745 struct sdhci_host *host = slot->host;
747 intel_host->active_ltr = readl(host->ioaddr + INTEL_ACTIVELTR);
748 intel_host->idle_ltr = readl(host->ioaddr + INTEL_IDLELTR);
751 static void intel_ltr_set(struct device *dev, s32 val)
753 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
754 struct sdhci_pci_slot *slot = chip->slots[0];
755 struct intel_host *intel_host = sdhci_pci_priv(slot);
756 struct sdhci_host *host = slot->host;
759 pm_runtime_get_sync(dev);
762 * Program latency tolerance (LTR) accordingly what has been asked
763 * by the PM QoS layer or disable it in case we were passed
764 * negative value or PM_QOS_LATENCY_ANY.
766 ltr = readl(host->ioaddr + INTEL_ACTIVELTR);
768 if (val == PM_QOS_LATENCY_ANY || val < 0) {
769 ltr &= ~INTEL_LTR_REQ;
771 ltr |= INTEL_LTR_REQ;
772 ltr &= ~INTEL_LTR_SCALE_MASK;
773 ltr &= ~INTEL_LTR_VALUE_MASK;
775 if (val > INTEL_LTR_VALUE_MASK) {
777 if (val > INTEL_LTR_VALUE_MASK)
778 val = INTEL_LTR_VALUE_MASK;
779 ltr |= INTEL_LTR_SCALE_32US | val;
781 ltr |= INTEL_LTR_SCALE_1US | val;
785 if (ltr == intel_host->active_ltr)
788 writel(ltr, host->ioaddr + INTEL_ACTIVELTR);
789 writel(ltr, host->ioaddr + INTEL_IDLELTR);
791 /* Cache the values into lpss structure */
792 intel_cache_ltr(slot);
794 pm_runtime_put_autosuspend(dev);
797 static bool intel_use_ltr(struct sdhci_pci_chip *chip)
799 switch (chip->pdev->device) {
800 case PCI_DEVICE_ID_INTEL_BYT_EMMC:
801 case PCI_DEVICE_ID_INTEL_BYT_EMMC2:
802 case PCI_DEVICE_ID_INTEL_BYT_SDIO:
803 case PCI_DEVICE_ID_INTEL_BYT_SD:
804 case PCI_DEVICE_ID_INTEL_BSW_EMMC:
805 case PCI_DEVICE_ID_INTEL_BSW_SDIO:
806 case PCI_DEVICE_ID_INTEL_BSW_SD:
813 static void intel_ltr_expose(struct sdhci_pci_chip *chip)
815 struct device *dev = &chip->pdev->dev;
817 if (!intel_use_ltr(chip))
820 dev->power.set_latency_tolerance = intel_ltr_set;
821 dev_pm_qos_expose_latency_tolerance(dev);
824 static void intel_ltr_hide(struct sdhci_pci_chip *chip)
826 struct device *dev = &chip->pdev->dev;
828 if (!intel_use_ltr(chip))
831 dev_pm_qos_hide_latency_tolerance(dev);
832 dev->power.set_latency_tolerance = NULL;
835 static void byt_probe_slot(struct sdhci_pci_slot *slot)
837 struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
838 struct device *dev = &slot->chip->pdev->dev;
839 struct mmc_host *mmc = slot->host->mmc;
843 byt_ocp_setting(slot->chip->pdev);
845 ops->execute_tuning = intel_execute_tuning;
846 ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
848 device_property_read_u32(dev, "max-frequency", &mmc->f_max);
851 slot->chip->slots[mmc->slotno] = slot;
852 intel_ltr_expose(slot->chip);
856 static void byt_add_debugfs(struct sdhci_pci_slot *slot)
858 struct intel_host *intel_host = sdhci_pci_priv(slot);
859 struct mmc_host *mmc = slot->host->mmc;
860 struct dentry *dir = mmc->debugfs_root;
862 if (!intel_use_ltr(slot->chip))
865 debugfs_create_x32("active_ltr", 0444, dir, &intel_host->active_ltr);
866 debugfs_create_x32("idle_ltr", 0444, dir, &intel_host->idle_ltr);
868 intel_cache_ltr(slot);
871 static int byt_add_host(struct sdhci_pci_slot *slot)
873 int ret = sdhci_add_host(slot->host);
876 byt_add_debugfs(slot);
880 static void byt_remove_slot(struct sdhci_pci_slot *slot, int dead)
882 struct mmc_host *mmc = slot->host->mmc;
885 intel_ltr_hide(slot->chip);
888 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
890 byt_probe_slot(slot);
891 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
892 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
893 MMC_CAP_CMD_DURING_TFR |
894 MMC_CAP_WAIT_WHILE_BUSY;
895 slot->hw_reset = sdhci_pci_int_hw_reset;
896 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
897 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
898 slot->host->mmc_host_ops.select_drive_strength =
899 intel_select_drive_strength;
903 static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
905 return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
906 (dmi_match(DMI_BIOS_VENDOR, "LENOVO") ||
907 dmi_match(DMI_SYS_VENDOR, "IRBIS"));
910 static bool jsl_broken_hs400es(struct sdhci_pci_slot *slot)
912 return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_JSL_EMMC &&
913 dmi_match(DMI_BIOS_VENDOR, "ASUSTeK COMPUTER INC.");
916 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
918 int ret = byt_emmc_probe_slot(slot);
920 if (!glk_broken_cqhci(slot))
921 slot->host->mmc->caps2 |= MMC_CAP2_CQE;
923 if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
924 if (!jsl_broken_hs400es(slot)) {
925 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES;
926 slot->host->mmc_host_ops.hs400_enhanced_strobe =
927 intel_hs400_enhanced_strobe;
929 slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
935 static const struct cqhci_host_ops glk_cqhci_ops = {
936 .enable = sdhci_cqe_enable,
937 .disable = sdhci_cqe_disable,
938 .dumpregs = sdhci_pci_dumpregs,
941 static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
943 struct device *dev = &slot->chip->pdev->dev;
944 struct sdhci_host *host = slot->host;
945 struct cqhci_host *cq_host;
949 ret = sdhci_setup_host(host);
953 cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
959 cq_host->mmio = host->ioaddr + 0x200;
960 cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ;
961 cq_host->ops = &glk_cqhci_ops;
963 dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
965 cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
967 ret = cqhci_init(cq_host, host->mmc, dma64);
971 ret = __sdhci_add_host(host);
975 byt_add_debugfs(slot);
980 sdhci_cleanup_host(host);
985 #define GLK_RX_CTRL1 0x834
986 #define GLK_TUN_VAL 0x840
987 #define GLK_PATH_PLL GENMASK(13, 8)
988 #define GLK_DLY GENMASK(6, 0)
989 /* Workaround firmware failing to restore the tuning value */
990 static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp)
992 struct sdhci_pci_slot *slot = chip->slots[0];
993 struct intel_host *intel_host = sdhci_pci_priv(slot);
994 struct sdhci_host *host = slot->host;
999 if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc))
1002 glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1);
1003 glk_tun_val = sdhci_readl(host, GLK_TUN_VAL);
1006 intel_host->glk_rx_ctrl1 = glk_rx_ctrl1;
1007 intel_host->glk_tun_val = glk_tun_val;
1011 if (!intel_host->glk_tun_val)
1014 if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) {
1015 intel_host->rpm_retune_ok = true;
1019 dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) +
1020 (intel_host->glk_tun_val << 1));
1021 if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1))
1024 glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly;
1025 sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1);
1027 intel_host->rpm_retune_ok = true;
1028 chip->rpm_retune = true;
1029 mmc_retune_needed(host->mmc);
1030 pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc));
1033 static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp)
1035 if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
1037 glk_rpm_retune_wa(chip, susp);
1040 static int glk_runtime_suspend(struct sdhci_pci_chip *chip)
1042 glk_rpm_retune_chk(chip, true);
1044 return sdhci_cqhci_runtime_suspend(chip);
1047 static int glk_runtime_resume(struct sdhci_pci_chip *chip)
1049 glk_rpm_retune_chk(chip, false);
1051 return sdhci_cqhci_runtime_resume(chip);
1056 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
1059 unsigned long long max_freq;
1061 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
1062 "MXFQ", NULL, &max_freq);
1063 if (ACPI_FAILURE(status)) {
1064 dev_err(&slot->chip->pdev->dev,
1065 "MXFQ not found in acpi table\n");
1069 slot->host->mmc->f_max = max_freq * 1000000;
1074 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
1080 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
1084 byt_probe_slot(slot);
1086 err = ni_set_max_freq(slot);
1090 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
1091 MMC_CAP_WAIT_WHILE_BUSY;
1095 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
1097 byt_probe_slot(slot);
1098 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
1099 MMC_CAP_WAIT_WHILE_BUSY;
1103 static void byt_needs_pwr_off(struct sdhci_pci_slot *slot)
1105 struct intel_host *intel_host = sdhci_pci_priv(slot);
1106 u8 reg = sdhci_readb(slot->host, SDHCI_POWER_CONTROL);
1108 intel_host->needs_pwr_off = reg & SDHCI_POWER_ON;
1111 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
1113 byt_probe_slot(slot);
1114 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
1115 MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE;
1117 slot->cd_override_level = true;
1118 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
1119 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
1120 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
1121 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
1122 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
1124 if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI &&
1125 slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3)
1126 slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V;
1128 byt_needs_pwr_off(slot);
1133 #ifdef CONFIG_PM_SLEEP
1135 static int byt_resume(struct sdhci_pci_chip *chip)
1137 byt_ocp_setting(chip->pdev);
1139 return sdhci_pci_resume_host(chip);
1146 static int byt_runtime_resume(struct sdhci_pci_chip *chip)
1148 byt_ocp_setting(chip->pdev);
1150 return sdhci_pci_runtime_resume_host(chip);
1155 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
1156 #ifdef CONFIG_PM_SLEEP
1157 .resume = byt_resume,
1160 .runtime_resume = byt_runtime_resume,
1162 .allow_runtime_pm = true,
1163 .probe_slot = byt_emmc_probe_slot,
1164 .add_host = byt_add_host,
1165 .remove_slot = byt_remove_slot,
1166 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1168 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1169 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
1170 SDHCI_QUIRK2_STOP_WITH_TC,
1171 .ops = &sdhci_intel_byt_ops,
1172 .priv_size = sizeof(struct intel_host),
1175 static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
1176 .allow_runtime_pm = true,
1177 .probe_slot = glk_emmc_probe_slot,
1178 .add_host = glk_emmc_add_host,
1179 .remove_slot = byt_remove_slot,
1180 #ifdef CONFIG_PM_SLEEP
1181 .suspend = sdhci_cqhci_suspend,
1182 .resume = sdhci_cqhci_resume,
1185 .runtime_suspend = glk_runtime_suspend,
1186 .runtime_resume = glk_runtime_resume,
1188 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1190 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1191 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
1192 SDHCI_QUIRK2_STOP_WITH_TC,
1193 .ops = &sdhci_intel_glk_ops,
1194 .priv_size = sizeof(struct intel_host),
1197 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
1198 #ifdef CONFIG_PM_SLEEP
1199 .resume = byt_resume,
1202 .runtime_resume = byt_runtime_resume,
1204 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1206 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
1207 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1208 .allow_runtime_pm = true,
1209 .probe_slot = ni_byt_sdio_probe_slot,
1210 .add_host = byt_add_host,
1211 .remove_slot = byt_remove_slot,
1212 .ops = &sdhci_intel_byt_ops,
1213 .priv_size = sizeof(struct intel_host),
1216 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
1217 #ifdef CONFIG_PM_SLEEP
1218 .resume = byt_resume,
1221 .runtime_resume = byt_runtime_resume,
1223 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1225 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
1226 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1227 .allow_runtime_pm = true,
1228 .probe_slot = byt_sdio_probe_slot,
1229 .add_host = byt_add_host,
1230 .remove_slot = byt_remove_slot,
1231 .ops = &sdhci_intel_byt_ops,
1232 .priv_size = sizeof(struct intel_host),
1235 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
1236 #ifdef CONFIG_PM_SLEEP
1237 .resume = byt_resume,
1240 .runtime_resume = byt_runtime_resume,
1242 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1244 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
1245 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1246 SDHCI_QUIRK2_STOP_WITH_TC,
1247 .allow_runtime_pm = true,
1248 .own_cd_for_runtime_pm = true,
1249 .probe_slot = byt_sd_probe_slot,
1250 .add_host = byt_add_host,
1251 .remove_slot = byt_remove_slot,
1252 .ops = &sdhci_intel_byt_ops,
1253 .priv_size = sizeof(struct intel_host),
1256 /* Define Host controllers for Intel Merrifield platform */
1257 #define INTEL_MRFLD_EMMC_0 0
1258 #define INTEL_MRFLD_EMMC_1 1
1259 #define INTEL_MRFLD_SD 2
1260 #define INTEL_MRFLD_SDIO 3
1263 static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot)
1265 struct acpi_device *device;
1267 device = ACPI_COMPANION(&slot->chip->pdev->dev);
1269 acpi_device_fix_up_power_extended(device);
1272 static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {}
1275 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
1277 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
1280 case INTEL_MRFLD_EMMC_0:
1281 case INTEL_MRFLD_EMMC_1:
1282 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1283 MMC_CAP_8_BIT_DATA |
1286 case INTEL_MRFLD_SD:
1288 slot->cd_override_level = true;
1290 * There are two PCB designs of SD card slot with the opposite
1291 * card detection sense. Quirk this out by ignoring GPIO state
1292 * completely in the custom ->get_cd() callback.
1294 slot->host->mmc_host_ops.get_cd = mrfld_get_cd;
1295 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
1297 case INTEL_MRFLD_SDIO:
1298 /* Advertise 2.0v for compatibility with the SDIO card's OCR */
1299 slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195;
1300 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1301 MMC_CAP_POWER_OFF_CARD;
1307 intel_mrfld_mmc_fix_up_power_slot(slot);
1311 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
1312 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1313 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
1314 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1315 .allow_runtime_pm = true,
1316 .probe_slot = intel_mrfld_mmc_probe_slot,
1319 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
1324 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
1329 * Turn PMOS on [bit 0], set over current detection to 2.4 V
1330 * [bit 1:2] and enable over current debouncing [bit 6].
1337 return pci_write_config_byte(chip->pdev, 0xAE, scratch);
1340 static int jmicron_probe(struct sdhci_pci_chip *chip)
1345 if (chip->pdev->revision == 0) {
1346 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
1347 SDHCI_QUIRK_32BIT_DMA_SIZE |
1348 SDHCI_QUIRK_32BIT_ADMA_SIZE |
1349 SDHCI_QUIRK_RESET_AFTER_REQUEST |
1350 SDHCI_QUIRK_BROKEN_SMALL_PIO;
1354 * JMicron chips can have two interfaces to the same hardware
1355 * in order to work around limitations in Microsoft's driver.
1356 * We need to make sure we only bind to one of them.
1358 * This code assumes two things:
1360 * 1. The PCI code adds subfunctions in order.
1362 * 2. The MMC interface has a lower subfunction number
1363 * than the SD interface.
1365 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
1366 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
1367 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
1368 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
1371 struct pci_dev *sd_dev;
1374 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
1375 mmcdev, sd_dev)) != NULL) {
1376 if ((PCI_SLOT(chip->pdev->devfn) ==
1377 PCI_SLOT(sd_dev->devfn)) &&
1378 (chip->pdev->bus == sd_dev->bus))
1383 pci_dev_put(sd_dev);
1384 dev_info(&chip->pdev->dev, "Refusing to bind to "
1385 "secondary interface.\n");
1391 * JMicron chips need a bit of a nudge to enable the power
1394 ret = jmicron_pmos(chip, 1);
1396 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1400 /* quirk for unsable RO-detection on JM388 chips */
1401 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
1402 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1403 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
1408 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
1412 scratch = readb(host->ioaddr + 0xC0);
1419 writeb(scratch, host->ioaddr + 0xC0);
1422 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
1424 if (slot->chip->pdev->revision == 0) {
1427 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
1428 version = (version & SDHCI_VENDOR_VER_MASK) >>
1429 SDHCI_VENDOR_VER_SHIFT;
1432 * Older versions of the chip have lots of nasty glitches
1433 * in the ADMA engine. It's best just to avoid it
1437 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
1440 /* JM388 MMC doesn't support 1.8V while SD supports it */
1441 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1442 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
1443 MMC_VDD_29_30 | MMC_VDD_30_31 |
1444 MMC_VDD_165_195; /* allow 1.8V */
1445 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
1446 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
1450 * The secondary interface requires a bit set to get the
1453 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1454 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1455 jmicron_enable_mmc(slot->host, 1);
1457 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
1462 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
1467 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1468 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1469 jmicron_enable_mmc(slot->host, 0);
1472 #ifdef CONFIG_PM_SLEEP
1473 static int jmicron_suspend(struct sdhci_pci_chip *chip)
1477 ret = sdhci_pci_suspend_host(chip);
1481 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1482 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1483 for (i = 0; i < chip->num_slots; i++)
1484 jmicron_enable_mmc(chip->slots[i]->host, 0);
1490 static int jmicron_resume(struct sdhci_pci_chip *chip)
1494 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1495 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1496 for (i = 0; i < chip->num_slots; i++)
1497 jmicron_enable_mmc(chip->slots[i]->host, 1);
1500 ret = jmicron_pmos(chip, 1);
1502 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1506 return sdhci_pci_resume_host(chip);
1510 static const struct sdhci_pci_fixes sdhci_jmicron = {
1511 .probe = jmicron_probe,
1513 .probe_slot = jmicron_probe_slot,
1514 .remove_slot = jmicron_remove_slot,
1516 #ifdef CONFIG_PM_SLEEP
1517 .suspend = jmicron_suspend,
1518 .resume = jmicron_resume,
1522 /* SysKonnect CardBus2SDIO extra registers */
1523 #define SYSKT_CTRL 0x200
1524 #define SYSKT_RDFIFO_STAT 0x204
1525 #define SYSKT_WRFIFO_STAT 0x208
1526 #define SYSKT_POWER_DATA 0x20c
1527 #define SYSKT_POWER_330 0xef
1528 #define SYSKT_POWER_300 0xf8
1529 #define SYSKT_POWER_184 0xcc
1530 #define SYSKT_POWER_CMD 0x20d
1531 #define SYSKT_POWER_START (1 << 7)
1532 #define SYSKT_POWER_STATUS 0x20e
1533 #define SYSKT_POWER_STATUS_OK (1 << 0)
1534 #define SYSKT_BOARD_REV 0x210
1535 #define SYSKT_CHIP_REV 0x211
1536 #define SYSKT_CONF_DATA 0x212
1537 #define SYSKT_CONF_DATA_1V8 (1 << 2)
1538 #define SYSKT_CONF_DATA_2V5 (1 << 1)
1539 #define SYSKT_CONF_DATA_3V3 (1 << 0)
1541 static int syskt_probe(struct sdhci_pci_chip *chip)
1543 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1544 chip->pdev->class &= ~0x0000FF;
1545 chip->pdev->class |= PCI_SDHCI_IFDMA;
1550 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
1554 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
1555 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
1556 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
1557 "board rev %d.%d, chip rev %d.%d\n",
1558 board_rev >> 4, board_rev & 0xf,
1559 chip_rev >> 4, chip_rev & 0xf);
1560 if (chip_rev >= 0x20)
1561 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
1563 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
1564 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
1566 tm = 10; /* Wait max 1 ms */
1568 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
1569 if (ps & SYSKT_POWER_STATUS_OK)
1574 dev_err(&slot->chip->pdev->dev,
1575 "power regulator never stabilized");
1576 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
1583 static const struct sdhci_pci_fixes sdhci_syskt = {
1584 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
1585 .probe = syskt_probe,
1586 .probe_slot = syskt_probe_slot,
1589 static int via_probe(struct sdhci_pci_chip *chip)
1591 if (chip->pdev->revision == 0x10)
1592 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
1597 static const struct sdhci_pci_fixes sdhci_via = {
1601 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
1603 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
1607 static const struct sdhci_pci_fixes sdhci_rtsx = {
1608 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1609 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
1610 SDHCI_QUIRK2_BROKEN_DDR50,
1611 .probe_slot = rtsx_probe_slot,
1614 /*AMD chipset generation*/
1615 enum amd_chipset_gen {
1616 AMD_CHIPSET_BEFORE_ML,
1619 AMD_CHIPSET_UNKNOWN,
1623 #define AMD_SD_AUTO_PATTERN 0xB8
1624 #define AMD_MSLEEP_DURATION 4
1625 #define AMD_SD_MISC_CONTROL 0xD0
1626 #define AMD_MAX_TUNE_VALUE 0x0B
1627 #define AMD_AUTO_TUNE_SEL 0x10800
1628 #define AMD_FIFO_PTR 0x30
1629 #define AMD_BIT_MASK 0x1F
1631 static void amd_tuning_reset(struct sdhci_host *host)
1635 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1636 val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
1637 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1639 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1640 val &= ~SDHCI_CTRL_EXEC_TUNING;
1641 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1644 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
1648 pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
1649 val &= ~AMD_BIT_MASK;
1650 val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
1651 pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
1654 static void amd_enable_manual_tuning(struct pci_dev *pdev)
1658 pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
1659 val |= AMD_FIFO_PTR;
1660 pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
1663 static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode)
1665 struct sdhci_pci_slot *slot = sdhci_priv(host);
1666 struct pci_dev *pdev = slot->chip->pdev;
1668 u8 valid_win_max = 0;
1669 u8 valid_win_end = 0;
1670 u8 ctrl, tune_around;
1672 amd_tuning_reset(host);
1674 for (tune_around = 0; tune_around < 12; tune_around++) {
1675 amd_config_tuning_phase(pdev, tune_around);
1677 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
1679 msleep(AMD_MSLEEP_DURATION);
1680 ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
1681 sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
1682 } else if (++valid_win > valid_win_max) {
1683 valid_win_max = valid_win;
1684 valid_win_end = tune_around;
1688 if (!valid_win_max) {
1689 dev_err(&pdev->dev, "no tuning point found\n");
1693 amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
1695 amd_enable_manual_tuning(pdev);
1697 host->mmc->retune_period = 0;
1702 static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode)
1704 struct sdhci_host *host = mmc_priv(mmc);
1706 /* AMD requires custom HS200 tuning */
1707 if (host->timing == MMC_TIMING_MMC_HS200)
1708 return amd_execute_tuning_hs200(host, opcode);
1710 /* Otherwise perform standard SDHCI tuning */
1711 return sdhci_execute_tuning(mmc, opcode);
1714 static int amd_probe_slot(struct sdhci_pci_slot *slot)
1716 struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
1718 ops->execute_tuning = amd_execute_tuning;
1723 static int amd_probe(struct sdhci_pci_chip *chip)
1725 struct pci_dev *smbus_dev;
1726 enum amd_chipset_gen gen;
1728 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1729 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
1731 gen = AMD_CHIPSET_BEFORE_ML;
1733 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1734 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
1736 if (smbus_dev->revision < 0x51)
1737 gen = AMD_CHIPSET_CZ;
1739 gen = AMD_CHIPSET_NL;
1741 gen = AMD_CHIPSET_UNKNOWN;
1745 pci_dev_put(smbus_dev);
1747 if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
1748 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
1753 static u32 sdhci_read_present_state(struct sdhci_host *host)
1755 return sdhci_readl(host, SDHCI_PRESENT_STATE);
1758 static void amd_sdhci_reset(struct sdhci_host *host, u8 mask)
1760 struct sdhci_pci_slot *slot = sdhci_priv(host);
1761 struct pci_dev *pdev = slot->chip->pdev;
1765 * SDHC 0x7906 requires a hard reset to clear all internal state.
1766 * Otherwise it can get into a bad state where the DATA lines are always
1769 if (pdev->device == 0x7906 && (mask & SDHCI_RESET_ALL)) {
1770 pci_clear_master(pdev);
1772 pci_save_state(pdev);
1774 pci_set_power_state(pdev, PCI_D3cold);
1775 pr_debug("%s: power_state=%u\n", mmc_hostname(host->mmc),
1776 pdev->current_state);
1777 pci_set_power_state(pdev, PCI_D0);
1779 pci_restore_state(pdev);
1782 * SDHCI_RESET_ALL says the card detect logic should not be
1783 * reset, but since we need to reset the entire controller
1784 * we should wait until the card detect logic has stabilized.
1786 * This normally takes about 40ms.
1789 sdhci_read_present_state,
1792 present_state & SDHCI_CD_STABLE,
1798 return sdhci_reset(host, mask);
1801 static const struct sdhci_ops amd_sdhci_pci_ops = {
1802 .set_clock = sdhci_set_clock,
1803 .enable_dma = sdhci_pci_enable_dma,
1804 .set_bus_width = sdhci_set_bus_width,
1805 .reset = amd_sdhci_reset,
1806 .set_uhs_signaling = sdhci_set_uhs_signaling,
1809 static const struct sdhci_pci_fixes sdhci_amd = {
1811 .ops = &amd_sdhci_pci_ops,
1812 .probe_slot = amd_probe_slot,
1815 static const struct pci_device_id pci_ids[] = {
1816 SDHCI_PCI_DEVICE(RICOH, R5C822, ricoh),
1817 SDHCI_PCI_DEVICE(RICOH, R5C843, ricoh_mmc),
1818 SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc),
1819 SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc),
1820 SDHCI_PCI_DEVICE(ENE, CB712_SD, ene_712),
1821 SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712),
1822 SDHCI_PCI_DEVICE(ENE, CB714_SD, ene_714),
1823 SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714),
1824 SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe),
1825 SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD, jmicron),
1826 SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron),
1827 SDHCI_PCI_DEVICE(JMICRON, JMB388_SD, jmicron),
1828 SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron),
1829 SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt),
1830 SDHCI_PCI_DEVICE(VIA, 95D0, via),
1831 SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx),
1832 SDHCI_PCI_DEVICE(INTEL, QRK_SD, intel_qrk),
1833 SDHCI_PCI_DEVICE(INTEL, MRST_SD0, intel_mrst_hc0),
1834 SDHCI_PCI_DEVICE(INTEL, MRST_SD1, intel_mrst_hc1_hc2),
1835 SDHCI_PCI_DEVICE(INTEL, MRST_SD2, intel_mrst_hc1_hc2),
1836 SDHCI_PCI_DEVICE(INTEL, MFD_SD, intel_mfd_sd),
1837 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio),
1838 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio),
1839 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc),
1840 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc),
1841 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio),
1842 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio),
1843 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC, intel_byt_emmc),
1844 SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio),
1845 SDHCI_PCI_DEVICE(INTEL, BYT_SDIO, intel_byt_sdio),
1846 SDHCI_PCI_DEVICE(INTEL, BYT_SD, intel_byt_sd),
1847 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc),
1848 SDHCI_PCI_DEVICE(INTEL, BSW_EMMC, intel_byt_emmc),
1849 SDHCI_PCI_DEVICE(INTEL, BSW_SDIO, intel_byt_sdio),
1850 SDHCI_PCI_DEVICE(INTEL, BSW_SD, intel_byt_sd),
1851 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd),
1852 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio),
1853 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio),
1854 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc),
1855 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc),
1856 SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc),
1857 SDHCI_PCI_DEVICE(INTEL, SPT_EMMC, intel_byt_emmc),
1858 SDHCI_PCI_DEVICE(INTEL, SPT_SDIO, intel_byt_sdio),
1859 SDHCI_PCI_DEVICE(INTEL, SPT_SD, intel_byt_sd),
1860 SDHCI_PCI_DEVICE(INTEL, DNV_EMMC, intel_byt_emmc),
1861 SDHCI_PCI_DEVICE(INTEL, CDF_EMMC, intel_glk_emmc),
1862 SDHCI_PCI_DEVICE(INTEL, BXT_EMMC, intel_byt_emmc),
1863 SDHCI_PCI_DEVICE(INTEL, BXT_SDIO, intel_byt_sdio),
1864 SDHCI_PCI_DEVICE(INTEL, BXT_SD, intel_byt_sd),
1865 SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc),
1866 SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio),
1867 SDHCI_PCI_DEVICE(INTEL, BXTM_SD, intel_byt_sd),
1868 SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc),
1869 SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio),
1870 SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd),
1871 SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc),
1872 SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio),
1873 SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd),
1874 SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc),
1875 SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd),
1876 SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd),
1877 SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc),
1878 SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd),
1879 SDHCI_PCI_DEVICE(INTEL, EHL_EMMC, intel_glk_emmc),
1880 SDHCI_PCI_DEVICE(INTEL, EHL_SD, intel_byt_sd),
1881 SDHCI_PCI_DEVICE(INTEL, CML_EMMC, intel_glk_emmc),
1882 SDHCI_PCI_DEVICE(INTEL, CML_SD, intel_byt_sd),
1883 SDHCI_PCI_DEVICE(INTEL, CMLH_SD, intel_byt_sd),
1884 SDHCI_PCI_DEVICE(INTEL, JSL_EMMC, intel_glk_emmc),
1885 SDHCI_PCI_DEVICE(INTEL, JSL_SD, intel_byt_sd),
1886 SDHCI_PCI_DEVICE(INTEL, LKF_EMMC, intel_glk_emmc),
1887 SDHCI_PCI_DEVICE(INTEL, LKF_SD, intel_byt_sd),
1888 SDHCI_PCI_DEVICE(INTEL, ADL_EMMC, intel_glk_emmc),
1889 SDHCI_PCI_DEVICE(O2, 8120, o2),
1890 SDHCI_PCI_DEVICE(O2, 8220, o2),
1891 SDHCI_PCI_DEVICE(O2, 8221, o2),
1892 SDHCI_PCI_DEVICE(O2, 8320, o2),
1893 SDHCI_PCI_DEVICE(O2, 8321, o2),
1894 SDHCI_PCI_DEVICE(O2, FUJIN2, o2),
1895 SDHCI_PCI_DEVICE(O2, SDS0, o2),
1896 SDHCI_PCI_DEVICE(O2, SDS1, o2),
1897 SDHCI_PCI_DEVICE(O2, SEABIRD0, o2),
1898 SDHCI_PCI_DEVICE(O2, SEABIRD1, o2),
1899 SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan),
1900 SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps),
1901 SDHCI_PCI_DEVICE(GLI, 9750, gl9750),
1902 SDHCI_PCI_DEVICE(GLI, 9755, gl9755),
1903 SDHCI_PCI_DEVICE(GLI, 9763E, gl9763e),
1904 SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
1905 /* Generic SD host controller */
1906 {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},
1907 { /* end: all zeroes */ },
1910 MODULE_DEVICE_TABLE(pci, pci_ids);
1912 /*****************************************************************************\
1914 * SDHCI core callbacks *
1916 \*****************************************************************************/
1918 int sdhci_pci_enable_dma(struct sdhci_host *host)
1920 struct sdhci_pci_slot *slot;
1921 struct pci_dev *pdev;
1923 slot = sdhci_priv(host);
1924 pdev = slot->chip->pdev;
1926 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1927 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1928 (host->flags & SDHCI_USE_SDMA)) {
1929 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1930 "doesn't fully claim to support it.\n");
1933 pci_set_master(pdev);
1938 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1940 struct sdhci_pci_slot *slot = sdhci_priv(host);
1943 slot->hw_reset(host);
1946 static const struct sdhci_ops sdhci_pci_ops = {
1947 .set_clock = sdhci_set_clock,
1948 .enable_dma = sdhci_pci_enable_dma,
1949 .set_bus_width = sdhci_set_bus_width,
1950 .reset = sdhci_reset,
1951 .set_uhs_signaling = sdhci_set_uhs_signaling,
1952 .hw_reset = sdhci_pci_hw_reset,
1955 /*****************************************************************************\
1959 \*****************************************************************************/
1961 #ifdef CONFIG_PM_SLEEP
1962 static int sdhci_pci_suspend(struct device *dev)
1964 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1969 if (chip->fixes && chip->fixes->suspend)
1970 return chip->fixes->suspend(chip);
1972 return sdhci_pci_suspend_host(chip);
1975 static int sdhci_pci_resume(struct device *dev)
1977 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1982 if (chip->fixes && chip->fixes->resume)
1983 return chip->fixes->resume(chip);
1985 return sdhci_pci_resume_host(chip);
1990 static int sdhci_pci_runtime_suspend(struct device *dev)
1992 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1997 if (chip->fixes && chip->fixes->runtime_suspend)
1998 return chip->fixes->runtime_suspend(chip);
2000 return sdhci_pci_runtime_suspend_host(chip);
2003 static int sdhci_pci_runtime_resume(struct device *dev)
2005 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
2010 if (chip->fixes && chip->fixes->runtime_resume)
2011 return chip->fixes->runtime_resume(chip);
2013 return sdhci_pci_runtime_resume_host(chip);
2017 static const struct dev_pm_ops sdhci_pci_pm_ops = {
2018 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
2019 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
2020 sdhci_pci_runtime_resume, NULL)
2023 /*****************************************************************************\
2025 * Device probing/removal *
2027 \*****************************************************************************/
2029 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
2030 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
2033 struct sdhci_pci_slot *slot;
2034 struct sdhci_host *host;
2035 int ret, bar = first_bar + slotno;
2036 size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
2038 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
2039 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
2040 return ERR_PTR(-ENODEV);
2043 if (pci_resource_len(pdev, bar) < 0x100) {
2044 dev_err(&pdev->dev, "Invalid iomem size. You may "
2045 "experience problems.\n");
2048 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
2049 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
2050 return ERR_PTR(-ENODEV);
2053 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
2054 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
2055 return ERR_PTR(-ENODEV);
2058 host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
2060 dev_err(&pdev->dev, "cannot allocate host\n");
2061 return ERR_CAST(host);
2064 slot = sdhci_priv(host);
2070 host->hw_name = "PCI";
2071 host->ops = chip->fixes && chip->fixes->ops ?
2074 host->quirks = chip->quirks;
2075 host->quirks2 = chip->quirks2;
2077 host->irq = pdev->irq;
2079 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
2081 dev_err(&pdev->dev, "cannot request region\n");
2085 host->ioaddr = pcim_iomap_table(pdev)[bar];
2087 if (chip->fixes && chip->fixes->probe_slot) {
2088 ret = chip->fixes->probe_slot(slot);
2093 host->mmc->pm_caps = MMC_PM_KEEP_POWER;
2094 host->mmc->slotno = slotno;
2095 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
2097 if (device_can_wakeup(&pdev->dev))
2098 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
2100 if (host->mmc->caps & MMC_CAP_CD_WAKE)
2101 device_init_wakeup(&pdev->dev, true);
2103 if (slot->cd_idx >= 0) {
2104 ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
2105 slot->cd_override_level, 0);
2106 if (ret && ret != -EPROBE_DEFER)
2107 ret = mmc_gpiod_request_cd(host->mmc, NULL,
2109 slot->cd_override_level,
2111 if (ret == -EPROBE_DEFER)
2115 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
2120 if (chip->fixes && chip->fixes->add_host)
2121 ret = chip->fixes->add_host(slot);
2123 ret = sdhci_add_host(host);
2128 * Check if the chip needs a separate GPIO for card detect to wake up
2129 * from runtime suspend. If it is not there, don't allow runtime PM.
2131 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm && slot->cd_idx < 0)
2132 chip->allow_runtime_pm = false;
2137 if (chip->fixes && chip->fixes->remove_slot)
2138 chip->fixes->remove_slot(slot, 0);
2141 sdhci_free_host(host);
2143 return ERR_PTR(ret);
2146 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
2152 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
2153 if (scratch == (u32)-1)
2156 sdhci_remove_host(slot->host, dead);
2158 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
2159 slot->chip->fixes->remove_slot(slot, dead);
2161 sdhci_free_host(slot->host);
2164 static void sdhci_pci_runtime_pm_allow(struct device *dev)
2166 pm_suspend_ignore_children(dev, 1);
2167 pm_runtime_set_autosuspend_delay(dev, 50);
2168 pm_runtime_use_autosuspend(dev);
2169 pm_runtime_allow(dev);
2170 /* Stay active until mmc core scans for a card */
2171 pm_runtime_put_noidle(dev);
2174 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
2176 pm_runtime_forbid(dev);
2177 pm_runtime_get_noresume(dev);
2180 static int sdhci_pci_probe(struct pci_dev *pdev,
2181 const struct pci_device_id *ent)
2183 struct sdhci_pci_chip *chip;
2184 struct sdhci_pci_slot *slot;
2186 u8 slots, first_bar;
2189 BUG_ON(pdev == NULL);
2190 BUG_ON(ent == NULL);
2192 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
2193 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
2195 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
2199 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
2200 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
2202 BUG_ON(slots > MAX_SLOTS);
2204 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
2208 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
2210 if (first_bar > 5) {
2211 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
2215 ret = pcim_enable_device(pdev);
2219 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
2224 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
2226 chip->quirks = chip->fixes->quirks;
2227 chip->quirks2 = chip->fixes->quirks2;
2228 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
2230 chip->num_slots = slots;
2231 chip->pm_retune = true;
2232 chip->rpm_retune = true;
2234 pci_set_drvdata(pdev, chip);
2236 if (chip->fixes && chip->fixes->probe) {
2237 ret = chip->fixes->probe(chip);
2242 slots = chip->num_slots; /* Quirk may have changed this */
2244 for (i = 0; i < slots; i++) {
2245 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
2247 for (i--; i >= 0; i--)
2248 sdhci_pci_remove_slot(chip->slots[i]);
2249 return PTR_ERR(slot);
2252 chip->slots[i] = slot;
2255 if (chip->allow_runtime_pm)
2256 sdhci_pci_runtime_pm_allow(&pdev->dev);
2261 static void sdhci_pci_remove(struct pci_dev *pdev)
2264 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
2266 if (chip->allow_runtime_pm)
2267 sdhci_pci_runtime_pm_forbid(&pdev->dev);
2269 for (i = 0; i < chip->num_slots; i++)
2270 sdhci_pci_remove_slot(chip->slots[i]);
2273 static struct pci_driver sdhci_driver = {
2274 .name = "sdhci-pci",
2275 .id_table = pci_ids,
2276 .probe = sdhci_pci_probe,
2277 .remove = sdhci_pci_remove,
2279 .pm = &sdhci_pci_pm_ops,
2280 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
2284 module_pci_driver(sdhci_driver);
2287 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2288 MODULE_LICENSE("GPL");