1 // SPDX-License-Identifier: GPL-2.0-only
3 * Secure Digital Host Controller Interface ACPI driver.
5 * Copyright (c) 2012, Intel Corporation.
8 #include <linux/init.h>
9 #include <linux/export.h>
10 #include <linux/module.h>
11 #include <linux/device.h>
12 #include <linux/platform_device.h>
13 #include <linux/ioport.h>
15 #include <linux/dma-mapping.h>
16 #include <linux/compiler.h>
17 #include <linux/stddef.h>
18 #include <linux/bitops.h>
19 #include <linux/types.h>
20 #include <linux/err.h>
21 #include <linux/interrupt.h>
22 #include <linux/acpi.h>
24 #include <linux/pm_runtime.h>
25 #include <linux/delay.h>
26 #include <linux/dmi.h>
28 #include <linux/mmc/host.h>
29 #include <linux/mmc/pm.h>
30 #include <linux/mmc/slot-gpio.h>
33 #include <asm/cpu_device_id.h>
34 #include <asm/intel-family.h>
35 #include <asm/iosf_mbi.h>
36 #include <linux/pci.h>
42 SDHCI_ACPI_SD_CD
= BIT(0),
43 SDHCI_ACPI_RUNTIME_PM
= BIT(1),
44 SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL
= BIT(2),
47 struct sdhci_acpi_chip
{
48 const struct sdhci_ops
*ops
;
53 mmc_pm_flag_t pm_caps
;
56 struct sdhci_acpi_slot
{
57 const struct sdhci_acpi_chip
*chip
;
62 mmc_pm_flag_t pm_caps
;
65 int (*probe_slot
)(struct platform_device
*, struct acpi_device
*);
66 int (*remove_slot
)(struct platform_device
*);
67 int (*free_slot
)(struct platform_device
*pdev
);
68 int (*setup_host
)(struct platform_device
*pdev
);
71 struct sdhci_acpi_host
{
72 struct sdhci_host
*host
;
73 const struct sdhci_acpi_slot
*slot
;
74 struct platform_device
*pdev
;
77 bool reset_signal_volt_on_suspend
;
78 unsigned long private[] ____cacheline_aligned
;
82 DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP
= BIT(0),
83 DMI_QUIRK_SD_NO_WRITE_PROTECT
= BIT(1),
86 static inline void *sdhci_acpi_priv(struct sdhci_acpi_host
*c
)
88 return (void *)c
->private;
91 static inline bool sdhci_acpi_flag(struct sdhci_acpi_host
*c
, unsigned int flag
)
93 return c
->slot
&& (c
->slot
->flags
& flag
);
96 #define INTEL_DSM_HS_CAPS_SDR25 BIT(0)
97 #define INTEL_DSM_HS_CAPS_DDR50 BIT(1)
98 #define INTEL_DSM_HS_CAPS_SDR50 BIT(2)
99 #define INTEL_DSM_HS_CAPS_SDR104 BIT(3)
103 INTEL_DSM_V18_SWITCH
= 3,
104 INTEL_DSM_V33_SWITCH
= 4,
105 INTEL_DSM_HS_CAPS
= 8,
113 static const guid_t intel_dsm_guid
=
114 GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
115 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
117 static int __intel_dsm(struct intel_host
*intel_host
, struct device
*dev
,
118 unsigned int fn
, u32
*result
)
120 union acpi_object
*obj
;
123 obj
= acpi_evaluate_dsm(ACPI_HANDLE(dev
), &intel_dsm_guid
, 0, fn
, NULL
);
127 if (obj
->type
== ACPI_TYPE_INTEGER
) {
128 *result
= obj
->integer
.value
;
129 } else if (obj
->type
== ACPI_TYPE_BUFFER
&& obj
->buffer
.length
> 0) {
130 size_t len
= min_t(size_t, obj
->buffer
.length
, 4);
133 memcpy(result
, obj
->buffer
.pointer
, len
);
135 dev_err(dev
, "%s DSM fn %u obj->type %d obj->buffer.length %d\n",
136 __func__
, fn
, obj
->type
, obj
->buffer
.length
);
145 static int intel_dsm(struct intel_host
*intel_host
, struct device
*dev
,
146 unsigned int fn
, u32
*result
)
148 if (fn
> 31 || !(intel_host
->dsm_fns
& (1 << fn
)))
151 return __intel_dsm(intel_host
, dev
, fn
, result
);
154 static void intel_dsm_init(struct intel_host
*intel_host
, struct device
*dev
,
155 struct mmc_host
*mmc
)
159 intel_host
->hs_caps
= ~0;
161 err
= __intel_dsm(intel_host
, dev
, INTEL_DSM_FNS
, &intel_host
->dsm_fns
);
163 pr_debug("%s: DSM not supported, error %d\n",
164 mmc_hostname(mmc
), err
);
168 pr_debug("%s: DSM function mask %#x\n",
169 mmc_hostname(mmc
), intel_host
->dsm_fns
);
171 intel_dsm(intel_host
, dev
, INTEL_DSM_HS_CAPS
, &intel_host
->hs_caps
);
174 static int intel_start_signal_voltage_switch(struct mmc_host
*mmc
,
177 struct device
*dev
= mmc_dev(mmc
);
178 struct sdhci_acpi_host
*c
= dev_get_drvdata(dev
);
179 struct intel_host
*intel_host
= sdhci_acpi_priv(c
);
184 err
= sdhci_start_signal_voltage_switch(mmc
, ios
);
188 switch (ios
->signal_voltage
) {
189 case MMC_SIGNAL_VOLTAGE_330
:
190 fn
= INTEL_DSM_V33_SWITCH
;
192 case MMC_SIGNAL_VOLTAGE_180
:
193 fn
= INTEL_DSM_V18_SWITCH
;
199 err
= intel_dsm(intel_host
, dev
, fn
, &result
);
200 pr_debug("%s: %s DSM fn %u error %d result %u\n",
201 mmc_hostname(mmc
), __func__
, fn
, err
, result
);
206 static void sdhci_acpi_int_hw_reset(struct sdhci_host
*host
)
210 reg
= sdhci_readb(host
, SDHCI_POWER_CONTROL
);
212 sdhci_writeb(host
, reg
, SDHCI_POWER_CONTROL
);
213 /* For eMMC, minimum is 1us but give it 9us for good measure */
216 sdhci_writeb(host
, reg
, SDHCI_POWER_CONTROL
);
217 /* For eMMC, minimum is 200us but give it 300us for good measure */
218 usleep_range(300, 1000);
221 static const struct sdhci_ops sdhci_acpi_ops_dflt
= {
222 .set_clock
= sdhci_set_clock
,
223 .set_bus_width
= sdhci_set_bus_width
,
224 .reset
= sdhci_reset
,
225 .set_uhs_signaling
= sdhci_set_uhs_signaling
,
228 static const struct sdhci_ops sdhci_acpi_ops_int
= {
229 .set_clock
= sdhci_set_clock
,
230 .set_bus_width
= sdhci_set_bus_width
,
231 .reset
= sdhci_reset
,
232 .set_uhs_signaling
= sdhci_set_uhs_signaling
,
233 .hw_reset
= sdhci_acpi_int_hw_reset
,
236 static const struct sdhci_acpi_chip sdhci_acpi_chip_int
= {
237 .ops
= &sdhci_acpi_ops_int
,
242 static bool sdhci_acpi_byt(void)
244 static const struct x86_cpu_id byt
[] = {
245 X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT
, NULL
),
249 return x86_match_cpu(byt
);
252 static bool sdhci_acpi_cht(void)
254 static const struct x86_cpu_id cht
[] = {
255 X86_MATCH_INTEL_FAM6_MODEL(ATOM_AIRMONT
, NULL
),
259 return x86_match_cpu(cht
);
262 #define BYT_IOSF_SCCEP 0x63
263 #define BYT_IOSF_OCP_NETCTRL0 0x1078
264 #define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8)
266 static void sdhci_acpi_byt_setting(struct device
*dev
)
270 if (!sdhci_acpi_byt())
273 if (iosf_mbi_read(BYT_IOSF_SCCEP
, MBI_CR_READ
, BYT_IOSF_OCP_NETCTRL0
,
275 dev_err(dev
, "%s read error\n", __func__
);
279 if (!(val
& BYT_IOSF_OCP_TIMEOUT_BASE
))
282 val
&= ~BYT_IOSF_OCP_TIMEOUT_BASE
;
284 if (iosf_mbi_write(BYT_IOSF_SCCEP
, MBI_CR_WRITE
, BYT_IOSF_OCP_NETCTRL0
,
286 dev_err(dev
, "%s write error\n", __func__
);
290 dev_dbg(dev
, "%s completed\n", __func__
);
293 static bool sdhci_acpi_byt_defer(struct device
*dev
)
295 if (!sdhci_acpi_byt())
298 if (!iosf_mbi_available())
301 sdhci_acpi_byt_setting(dev
);
306 static bool sdhci_acpi_cht_pci_wifi(unsigned int vendor
, unsigned int device
,
307 unsigned int slot
, unsigned int parent_slot
)
309 struct pci_dev
*dev
, *parent
, *from
= NULL
;
312 dev
= pci_get_device(vendor
, device
, from
);
316 parent
= pci_upstream_bridge(dev
);
317 if (ACPI_COMPANION(&dev
->dev
) && PCI_SLOT(dev
->devfn
) == slot
&&
318 parent
&& PCI_SLOT(parent
->devfn
) == parent_slot
&&
319 !pci_upstream_bridge(parent
)) {
330 * GPDwin uses PCI wifi which conflicts with SDIO's use of
331 * acpi_device_fix_up_power() on child device nodes. Identifying GPDwin is
332 * problematic, but since SDIO is only used for wifi, the presence of the PCI
333 * wifi card in the expected slot with an ACPI companion node, is used to
334 * indicate that acpi_device_fix_up_power() should be avoided.
336 static inline bool sdhci_acpi_no_fixup_child_power(struct acpi_device
*adev
)
338 return sdhci_acpi_cht() &&
339 acpi_dev_hid_uid_match(adev
, "80860F14", "2") &&
340 sdhci_acpi_cht_pci_wifi(0x14e4, 0x43ec, 0, 28);
345 static inline void sdhci_acpi_byt_setting(struct device
*dev
)
349 static inline bool sdhci_acpi_byt_defer(struct device
*dev
)
354 static inline bool sdhci_acpi_no_fixup_child_power(struct acpi_device
*adev
)
361 static int bxt_get_cd(struct mmc_host
*mmc
)
363 int gpio_cd
= mmc_gpio_get_cd(mmc
);
364 struct sdhci_host
*host
= mmc_priv(mmc
);
371 spin_lock_irqsave(&host
->lock
, flags
);
373 if (host
->flags
& SDHCI_DEVICE_DEAD
)
376 ret
= !!(sdhci_readl(host
, SDHCI_PRESENT_STATE
) & SDHCI_CARD_PRESENT
);
378 spin_unlock_irqrestore(&host
->lock
, flags
);
383 static int intel_probe_slot(struct platform_device
*pdev
, struct acpi_device
*adev
)
385 struct sdhci_acpi_host
*c
= platform_get_drvdata(pdev
);
386 struct intel_host
*intel_host
= sdhci_acpi_priv(c
);
387 struct sdhci_host
*host
= c
->host
;
389 if (acpi_dev_hid_uid_match(adev
, "80860F14", "1") &&
390 sdhci_readl(host
, SDHCI_CAPABILITIES
) == 0x446cc8b2 &&
391 sdhci_readl(host
, SDHCI_CAPABILITIES_1
) == 0x00000807)
392 host
->timeout_clk
= 1000; /* 1000 kHz i.e. 1 MHz */
394 if (acpi_dev_hid_uid_match(adev
, "80865ACA", NULL
))
395 host
->mmc_host_ops
.get_cd
= bxt_get_cd
;
397 intel_dsm_init(intel_host
, &pdev
->dev
, host
->mmc
);
399 host
->mmc_host_ops
.start_signal_voltage_switch
=
400 intel_start_signal_voltage_switch
;
407 static int intel_setup_host(struct platform_device
*pdev
)
409 struct sdhci_acpi_host
*c
= platform_get_drvdata(pdev
);
410 struct intel_host
*intel_host
= sdhci_acpi_priv(c
);
412 if (!(intel_host
->hs_caps
& INTEL_DSM_HS_CAPS_SDR25
))
413 c
->host
->mmc
->caps
&= ~MMC_CAP_UHS_SDR25
;
415 if (!(intel_host
->hs_caps
& INTEL_DSM_HS_CAPS_SDR50
))
416 c
->host
->mmc
->caps
&= ~MMC_CAP_UHS_SDR50
;
418 if (!(intel_host
->hs_caps
& INTEL_DSM_HS_CAPS_DDR50
))
419 c
->host
->mmc
->caps
&= ~MMC_CAP_UHS_DDR50
;
421 if (!(intel_host
->hs_caps
& INTEL_DSM_HS_CAPS_SDR104
))
422 c
->host
->mmc
->caps
&= ~MMC_CAP_UHS_SDR104
;
427 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc
= {
428 .chip
= &sdhci_acpi_chip_int
,
429 .caps
= MMC_CAP_8_BIT_DATA
| MMC_CAP_NONREMOVABLE
|
430 MMC_CAP_HW_RESET
| MMC_CAP_1_8V_DDR
|
431 MMC_CAP_CMD_DURING_TFR
| MMC_CAP_WAIT_WHILE_BUSY
,
432 .flags
= SDHCI_ACPI_RUNTIME_PM
,
433 .quirks
= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
|
435 .quirks2
= SDHCI_QUIRK2_PRESET_VALUE_BROKEN
|
436 SDHCI_QUIRK2_STOP_WITH_TC
|
437 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400
,
438 .probe_slot
= intel_probe_slot
,
439 .setup_host
= intel_setup_host
,
440 .priv_size
= sizeof(struct intel_host
),
443 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio
= {
444 .quirks
= SDHCI_QUIRK_BROKEN_CARD_DETECTION
|
446 SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
,
447 .quirks2
= SDHCI_QUIRK2_HOST_OFF_CARD_ON
,
448 .caps
= MMC_CAP_NONREMOVABLE
| MMC_CAP_POWER_OFF_CARD
|
449 MMC_CAP_WAIT_WHILE_BUSY
,
450 .flags
= SDHCI_ACPI_RUNTIME_PM
,
451 .pm_caps
= MMC_PM_KEEP_POWER
,
452 .probe_slot
= intel_probe_slot
,
453 .setup_host
= intel_setup_host
,
454 .priv_size
= sizeof(struct intel_host
),
457 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd
= {
458 .flags
= SDHCI_ACPI_SD_CD
| SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL
|
459 SDHCI_ACPI_RUNTIME_PM
,
460 .quirks
= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
|
462 .quirks2
= SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON
|
463 SDHCI_QUIRK2_STOP_WITH_TC
,
464 .caps
= MMC_CAP_WAIT_WHILE_BUSY
| MMC_CAP_AGGRESSIVE_PM
,
465 .probe_slot
= intel_probe_slot
,
466 .setup_host
= intel_setup_host
,
467 .priv_size
= sizeof(struct intel_host
),
470 #define VENDOR_SPECIFIC_PWRCTL_CLEAR_REG 0x1a8
471 #define VENDOR_SPECIFIC_PWRCTL_CTL_REG 0x1ac
472 static irqreturn_t
sdhci_acpi_qcom_handler(int irq
, void *ptr
)
474 struct sdhci_host
*host
= ptr
;
476 sdhci_writel(host
, 0x3, VENDOR_SPECIFIC_PWRCTL_CLEAR_REG
);
477 sdhci_writel(host
, 0x1, VENDOR_SPECIFIC_PWRCTL_CTL_REG
);
482 static int qcom_probe_slot(struct platform_device
*pdev
, struct acpi_device
*adev
)
484 struct sdhci_acpi_host
*c
= platform_get_drvdata(pdev
);
485 struct sdhci_host
*host
= c
->host
;
486 int *irq
= sdhci_acpi_priv(c
);
490 if (!acpi_dev_hid_uid_match(adev
, "QCOM8051", NULL
))
493 *irq
= platform_get_irq(pdev
, 1);
497 return request_threaded_irq(*irq
, NULL
, sdhci_acpi_qcom_handler
,
498 IRQF_ONESHOT
| IRQF_TRIGGER_HIGH
,
502 static int qcom_free_slot(struct platform_device
*pdev
)
504 struct device
*dev
= &pdev
->dev
;
505 struct sdhci_acpi_host
*c
= platform_get_drvdata(pdev
);
506 struct sdhci_host
*host
= c
->host
;
507 struct acpi_device
*adev
;
508 int *irq
= sdhci_acpi_priv(c
);
510 adev
= ACPI_COMPANION(dev
);
514 if (!acpi_dev_hid_uid_match(adev
, "QCOM8051", NULL
))
520 free_irq(*irq
, host
);
524 static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd_3v
= {
525 .quirks
= SDHCI_QUIRK_BROKEN_CARD_DETECTION
,
526 .quirks2
= SDHCI_QUIRK2_NO_1_8_V
,
527 .caps
= MMC_CAP_NONREMOVABLE
,
528 .priv_size
= sizeof(int),
529 .probe_slot
= qcom_probe_slot
,
530 .free_slot
= qcom_free_slot
,
533 static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd
= {
534 .quirks
= SDHCI_QUIRK_BROKEN_CARD_DETECTION
,
535 .caps
= MMC_CAP_NONREMOVABLE
,
538 /* AMD sdhci reset dll register. */
539 #define SDHCI_AMD_RESET_DLL_REGISTER 0x908
541 static int amd_select_drive_strength(struct mmc_card
*card
,
542 unsigned int max_dtr
, int host_drv
,
543 int card_drv
, int *drv_type
)
545 return MMC_SET_DRIVER_TYPE_A
;
548 static void sdhci_acpi_amd_hs400_dll(struct sdhci_host
*host
)
550 /* AMD Platform requires dll setting */
551 sdhci_writel(host
, 0x40003210, SDHCI_AMD_RESET_DLL_REGISTER
);
552 usleep_range(10, 20);
553 sdhci_writel(host
, 0x40033210, SDHCI_AMD_RESET_DLL_REGISTER
);
557 * For AMD Platform it is required to disable the tuning
558 * bit first controller to bring to HS Mode from HS200
559 * mode, later enable to tune to HS400 mode.
561 static void amd_set_ios(struct mmc_host
*mmc
, struct mmc_ios
*ios
)
563 struct sdhci_host
*host
= mmc_priv(mmc
);
564 unsigned int old_timing
= host
->timing
;
566 sdhci_set_ios(mmc
, ios
);
567 if (old_timing
== MMC_TIMING_MMC_HS200
&&
568 ios
->timing
== MMC_TIMING_MMC_HS
)
569 sdhci_writew(host
, 0x9, SDHCI_HOST_CONTROL2
);
570 if (old_timing
!= MMC_TIMING_MMC_HS400
&&
571 ios
->timing
== MMC_TIMING_MMC_HS400
) {
572 sdhci_writew(host
, 0x80, SDHCI_HOST_CONTROL2
);
573 sdhci_acpi_amd_hs400_dll(host
);
577 static const struct sdhci_ops sdhci_acpi_ops_amd
= {
578 .set_clock
= sdhci_set_clock
,
579 .set_bus_width
= sdhci_set_bus_width
,
580 .reset
= sdhci_reset
,
581 .set_uhs_signaling
= sdhci_set_uhs_signaling
,
584 static const struct sdhci_acpi_chip sdhci_acpi_chip_amd
= {
585 .ops
= &sdhci_acpi_ops_amd
,
588 static int sdhci_acpi_emmc_amd_probe_slot(struct platform_device
*pdev
,
589 struct acpi_device
*adev
)
591 struct sdhci_acpi_host
*c
= platform_get_drvdata(pdev
);
592 struct sdhci_host
*host
= c
->host
;
594 sdhci_read_caps(host
);
595 if (host
->caps1
& SDHCI_SUPPORT_DDR50
)
596 host
->mmc
->caps
= MMC_CAP_1_8V_DDR
;
598 if ((host
->caps1
& SDHCI_SUPPORT_SDR104
) &&
599 (host
->mmc
->caps
& MMC_CAP_1_8V_DDR
))
600 host
->mmc
->caps2
= MMC_CAP2_HS400_1_8V
;
602 host
->mmc_host_ops
.select_drive_strength
= amd_select_drive_strength
;
603 host
->mmc_host_ops
.set_ios
= amd_set_ios
;
607 static const struct sdhci_acpi_slot sdhci_acpi_slot_amd_emmc
= {
608 .chip
= &sdhci_acpi_chip_amd
,
609 .caps
= MMC_CAP_8_BIT_DATA
| MMC_CAP_NONREMOVABLE
,
610 .quirks
= SDHCI_QUIRK_32BIT_DMA_ADDR
| SDHCI_QUIRK_32BIT_DMA_SIZE
|
611 SDHCI_QUIRK_32BIT_ADMA_SIZE
,
612 .probe_slot
= sdhci_acpi_emmc_amd_probe_slot
,
615 struct sdhci_acpi_uid_slot
{
618 const struct sdhci_acpi_slot
*slot
;
621 static const struct sdhci_acpi_uid_slot sdhci_acpi_uids
[] = {
622 { "80865ACA", NULL
, &sdhci_acpi_slot_int_sd
},
623 { "80865ACC", NULL
, &sdhci_acpi_slot_int_emmc
},
624 { "80865AD0", NULL
, &sdhci_acpi_slot_int_sdio
},
625 { "80860F14" , "1" , &sdhci_acpi_slot_int_emmc
},
626 { "80860F14" , "2" , &sdhci_acpi_slot_int_sdio
},
627 { "80860F14" , "3" , &sdhci_acpi_slot_int_sd
},
628 { "80860F16" , NULL
, &sdhci_acpi_slot_int_sd
},
629 { "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio
},
630 { "INT33BB" , "3" , &sdhci_acpi_slot_int_sd
},
631 { "INT33C6" , NULL
, &sdhci_acpi_slot_int_sdio
},
632 { "INT3436" , NULL
, &sdhci_acpi_slot_int_sdio
},
633 { "INT344D" , NULL
, &sdhci_acpi_slot_int_sdio
},
634 { "PNP0FFF" , "3" , &sdhci_acpi_slot_int_sd
},
636 { "QCOM8051", NULL
, &sdhci_acpi_slot_qcom_sd_3v
},
637 { "QCOM8052", NULL
, &sdhci_acpi_slot_qcom_sd
},
638 { "AMDI0040", NULL
, &sdhci_acpi_slot_amd_emmc
},
642 static const struct acpi_device_id sdhci_acpi_ids
[] = {
658 MODULE_DEVICE_TABLE(acpi
, sdhci_acpi_ids
);
660 static const struct dmi_system_id sdhci_acpi_quirks
[] = {
663 * The Lenovo Miix 320-10ICR has a bug in the _PS0 method of
664 * the SHC1 ACPI device, this bug causes it to reprogram the
665 * wrong LDO (DLDO3) to 1.8V if 1.8V modes are used and the
666 * card is (runtime) suspended + resumed. DLDO3 is used for
667 * the LCD and setting it to 1.8V causes the LCD to go black.
670 DMI_MATCH(DMI_SYS_VENDOR
, "LENOVO"),
671 DMI_MATCH(DMI_PRODUCT_VERSION
, "Lenovo MIIX 320-10ICR"),
673 .driver_data
= (void *)DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP
,
677 * The Acer Aspire Switch 10 (SW5-012) microSD slot always
678 * reports the card being write-protected even though microSD
679 * cards do not have a write-protect switch at all.
682 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
683 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire SW5-012"),
685 .driver_data
= (void *)DMI_QUIRK_SD_NO_WRITE_PROTECT
,
687 {} /* Terminating entry */
690 static const struct sdhci_acpi_slot
*sdhci_acpi_get_slot(struct acpi_device
*adev
)
692 const struct sdhci_acpi_uid_slot
*u
;
694 for (u
= sdhci_acpi_uids
; u
->hid
; u
++) {
695 if (acpi_dev_hid_uid_match(adev
, u
->hid
, u
->uid
))
701 static int sdhci_acpi_probe(struct platform_device
*pdev
)
703 struct device
*dev
= &pdev
->dev
;
704 const struct sdhci_acpi_slot
*slot
;
705 struct acpi_device
*device
, *child
;
706 const struct dmi_system_id
*id
;
707 struct sdhci_acpi_host
*c
;
708 struct sdhci_host
*host
;
709 struct resource
*iomem
;
715 device
= ACPI_COMPANION(dev
);
719 id
= dmi_first_match(sdhci_acpi_quirks
);
721 quirks
= (long)id
->driver_data
;
723 slot
= sdhci_acpi_get_slot(device
);
725 /* Power on the SDHCI controller and its children */
726 acpi_device_fix_up_power(device
);
727 if (!sdhci_acpi_no_fixup_child_power(device
)) {
728 list_for_each_entry(child
, &device
->children
, node
)
729 if (child
->status
.present
&& child
->status
.enabled
)
730 acpi_device_fix_up_power(child
);
733 if (sdhci_acpi_byt_defer(dev
))
734 return -EPROBE_DEFER
;
736 iomem
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
740 len
= resource_size(iomem
);
742 dev_err(dev
, "Invalid iomem size!\n");
744 if (!devm_request_mem_region(dev
, iomem
->start
, len
, dev_name(dev
)))
747 priv_size
= slot
? slot
->priv_size
: 0;
748 host
= sdhci_alloc_host(dev
, sizeof(struct sdhci_acpi_host
) + priv_size
);
750 return PTR_ERR(host
);
752 c
= sdhci_priv(host
);
756 c
->use_runtime_pm
= sdhci_acpi_flag(c
, SDHCI_ACPI_RUNTIME_PM
);
758 platform_set_drvdata(pdev
, c
);
760 host
->hw_name
= "ACPI";
761 host
->ops
= &sdhci_acpi_ops_dflt
;
762 host
->irq
= platform_get_irq(pdev
, 0);
768 host
->ioaddr
= devm_ioremap(dev
, iomem
->start
,
769 resource_size(iomem
));
770 if (host
->ioaddr
== NULL
) {
776 if (c
->slot
->probe_slot
) {
777 err
= c
->slot
->probe_slot(pdev
, device
);
782 host
->ops
= c
->slot
->chip
->ops
;
783 host
->quirks
|= c
->slot
->chip
->quirks
;
784 host
->quirks2
|= c
->slot
->chip
->quirks2
;
785 host
->mmc
->caps
|= c
->slot
->chip
->caps
;
786 host
->mmc
->caps2
|= c
->slot
->chip
->caps2
;
787 host
->mmc
->pm_caps
|= c
->slot
->chip
->pm_caps
;
789 host
->quirks
|= c
->slot
->quirks
;
790 host
->quirks2
|= c
->slot
->quirks2
;
791 host
->mmc
->caps
|= c
->slot
->caps
;
792 host
->mmc
->caps2
|= c
->slot
->caps2
;
793 host
->mmc
->pm_caps
|= c
->slot
->pm_caps
;
796 host
->mmc
->caps2
|= MMC_CAP2_NO_PRESCAN_POWERUP
;
798 if (sdhci_acpi_flag(c
, SDHCI_ACPI_SD_CD
)) {
799 bool v
= sdhci_acpi_flag(c
, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL
);
801 err
= mmc_gpiod_request_cd(host
->mmc
, NULL
, 0, v
, 0);
803 if (err
== -EPROBE_DEFER
)
805 dev_warn(dev
, "failed to setup card detect gpio\n");
806 c
->use_runtime_pm
= false;
809 if (quirks
& DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP
)
810 c
->reset_signal_volt_on_suspend
= true;
812 if (quirks
& DMI_QUIRK_SD_NO_WRITE_PROTECT
)
813 host
->mmc
->caps2
|= MMC_CAP2_NO_WRITE_PROTECT
;
816 err
= sdhci_setup_host(host
);
820 if (c
->slot
&& c
->slot
->setup_host
) {
821 err
= c
->slot
->setup_host(pdev
);
826 err
= __sdhci_add_host(host
);
830 if (c
->use_runtime_pm
) {
831 pm_runtime_set_active(dev
);
832 pm_suspend_ignore_children(dev
, 1);
833 pm_runtime_set_autosuspend_delay(dev
, 50);
834 pm_runtime_use_autosuspend(dev
);
835 pm_runtime_enable(dev
);
838 device_enable_async_suspend(dev
);
843 sdhci_cleanup_host(c
->host
);
845 if (c
->slot
&& c
->slot
->free_slot
)
846 c
->slot
->free_slot(pdev
);
848 sdhci_free_host(c
->host
);
852 static int sdhci_acpi_remove(struct platform_device
*pdev
)
854 struct sdhci_acpi_host
*c
= platform_get_drvdata(pdev
);
855 struct device
*dev
= &pdev
->dev
;
858 if (c
->use_runtime_pm
) {
859 pm_runtime_get_sync(dev
);
860 pm_runtime_disable(dev
);
861 pm_runtime_put_noidle(dev
);
864 if (c
->slot
&& c
->slot
->remove_slot
)
865 c
->slot
->remove_slot(pdev
);
867 dead
= (sdhci_readl(c
->host
, SDHCI_INT_STATUS
) == ~0);
868 sdhci_remove_host(c
->host
, dead
);
870 if (c
->slot
&& c
->slot
->free_slot
)
871 c
->slot
->free_slot(pdev
);
873 sdhci_free_host(c
->host
);
878 static void __maybe_unused
sdhci_acpi_reset_signal_voltage_if_needed(
881 struct sdhci_acpi_host
*c
= dev_get_drvdata(dev
);
882 struct sdhci_host
*host
= c
->host
;
884 if (c
->is_intel
&& c
->reset_signal_volt_on_suspend
&&
885 host
->mmc
->ios
.signal_voltage
!= MMC_SIGNAL_VOLTAGE_330
) {
886 struct intel_host
*intel_host
= sdhci_acpi_priv(c
);
887 unsigned int fn
= INTEL_DSM_V33_SWITCH
;
890 intel_dsm(intel_host
, dev
, fn
, &result
);
894 #ifdef CONFIG_PM_SLEEP
896 static int sdhci_acpi_suspend(struct device
*dev
)
898 struct sdhci_acpi_host
*c
= dev_get_drvdata(dev
);
899 struct sdhci_host
*host
= c
->host
;
902 if (host
->tuning_mode
!= SDHCI_TUNING_MODE_3
)
903 mmc_retune_needed(host
->mmc
);
905 ret
= sdhci_suspend_host(host
);
909 sdhci_acpi_reset_signal_voltage_if_needed(dev
);
913 static int sdhci_acpi_resume(struct device
*dev
)
915 struct sdhci_acpi_host
*c
= dev_get_drvdata(dev
);
917 sdhci_acpi_byt_setting(&c
->pdev
->dev
);
919 return sdhci_resume_host(c
->host
);
926 static int sdhci_acpi_runtime_suspend(struct device
*dev
)
928 struct sdhci_acpi_host
*c
= dev_get_drvdata(dev
);
929 struct sdhci_host
*host
= c
->host
;
932 if (host
->tuning_mode
!= SDHCI_TUNING_MODE_3
)
933 mmc_retune_needed(host
->mmc
);
935 ret
= sdhci_runtime_suspend_host(host
);
939 sdhci_acpi_reset_signal_voltage_if_needed(dev
);
943 static int sdhci_acpi_runtime_resume(struct device
*dev
)
945 struct sdhci_acpi_host
*c
= dev_get_drvdata(dev
);
947 sdhci_acpi_byt_setting(&c
->pdev
->dev
);
949 return sdhci_runtime_resume_host(c
->host
, 0);
954 static const struct dev_pm_ops sdhci_acpi_pm_ops
= {
955 SET_SYSTEM_SLEEP_PM_OPS(sdhci_acpi_suspend
, sdhci_acpi_resume
)
956 SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend
,
957 sdhci_acpi_runtime_resume
, NULL
)
960 static struct platform_driver sdhci_acpi_driver
= {
962 .name
= "sdhci-acpi",
963 .acpi_match_table
= sdhci_acpi_ids
,
964 .pm
= &sdhci_acpi_pm_ops
,
966 .probe
= sdhci_acpi_probe
,
967 .remove
= sdhci_acpi_remove
,
970 module_platform_driver(sdhci_acpi_driver
);
972 MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver");
973 MODULE_AUTHOR("Adrian Hunter");
974 MODULE_LICENSE("GPL v2");