1c4e05037SAdrian Hunter /* 2c4e05037SAdrian Hunter * Secure Digital Host Controller Interface ACPI driver. 3c4e05037SAdrian Hunter * 4c4e05037SAdrian Hunter * Copyright (c) 2012, Intel Corporation. 5c4e05037SAdrian Hunter * 6c4e05037SAdrian Hunter * This program is free software; you can redistribute it and/or modify it 7c4e05037SAdrian Hunter * under the terms and conditions of the GNU General Public License, 8c4e05037SAdrian Hunter * version 2, as published by the Free Software Foundation. 9c4e05037SAdrian Hunter * 10c4e05037SAdrian Hunter * This program is distributed in the hope it will be useful, but WITHOUT 11c4e05037SAdrian Hunter * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12c4e05037SAdrian Hunter * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13c4e05037SAdrian Hunter * more details. 14c4e05037SAdrian Hunter * 15c4e05037SAdrian Hunter * You should have received a copy of the GNU General Public License along with 16c4e05037SAdrian Hunter * this program; if not, write to the Free Software Foundation, Inc., 17c4e05037SAdrian Hunter * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18c4e05037SAdrian Hunter * 19c4e05037SAdrian Hunter */ 20c4e05037SAdrian Hunter 21c4e05037SAdrian Hunter #include <linux/init.h> 22c4e05037SAdrian Hunter #include <linux/export.h> 23c4e05037SAdrian Hunter #include <linux/module.h> 24c4e05037SAdrian Hunter #include <linux/device.h> 25c4e05037SAdrian Hunter #include <linux/platform_device.h> 26c4e05037SAdrian Hunter #include <linux/ioport.h> 27c4e05037SAdrian Hunter #include <linux/io.h> 28c4e05037SAdrian Hunter #include <linux/dma-mapping.h> 29c4e05037SAdrian Hunter #include <linux/compiler.h> 30c4e05037SAdrian Hunter #include <linux/stddef.h> 31c4e05037SAdrian Hunter #include <linux/bitops.h> 32c4e05037SAdrian Hunter #include <linux/types.h> 33c4e05037SAdrian Hunter #include <linux/err.h> 34c4e05037SAdrian Hunter #include <linux/interrupt.h> 35c4e05037SAdrian Hunter #include <linux/acpi.h> 36c4e05037SAdrian Hunter #include <linux/pm.h> 37c4e05037SAdrian Hunter #include <linux/pm_runtime.h> 38b04fa064SAdrian Hunter #include <linux/delay.h> 39c4e05037SAdrian Hunter 40c4e05037SAdrian Hunter #include <linux/mmc/host.h> 41c4e05037SAdrian Hunter #include <linux/mmc/pm.h> 424fd4409cSAdrian Hunter #include <linux/mmc/slot-gpio.h> 43c4e05037SAdrian Hunter 446e1c7d61SAdrian Hunter #ifdef CONFIG_X86 456e1c7d61SAdrian Hunter #include <asm/cpu_device_id.h> 468ba4cb53SDave Hansen #include <asm/intel-family.h> 476e1c7d61SAdrian Hunter #include <asm/iosf_mbi.h> 4817753d16SAdrian Hunter #include <linux/pci.h> 496e1c7d61SAdrian Hunter #endif 506e1c7d61SAdrian Hunter 51c4e05037SAdrian Hunter #include "sdhci.h" 52c4e05037SAdrian Hunter 53c4e05037SAdrian Hunter enum { 54c4e05037SAdrian Hunter SDHCI_ACPI_SD_CD = BIT(0), 55c4e05037SAdrian Hunter SDHCI_ACPI_RUNTIME_PM = BIT(1), 564fd4409cSAdrian Hunter SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL = BIT(2), 57c4e05037SAdrian Hunter }; 58c4e05037SAdrian Hunter 59c4e05037SAdrian Hunter struct sdhci_acpi_chip { 60c4e05037SAdrian Hunter const struct sdhci_ops *ops; 61c4e05037SAdrian Hunter unsigned int quirks; 62c4e05037SAdrian Hunter unsigned int quirks2; 63c4e05037SAdrian Hunter unsigned long caps; 64c4e05037SAdrian Hunter unsigned int caps2; 65c4e05037SAdrian Hunter mmc_pm_flag_t pm_caps; 66c4e05037SAdrian Hunter }; 67c4e05037SAdrian Hunter 68c4e05037SAdrian Hunter struct sdhci_acpi_slot { 69c4e05037SAdrian Hunter const struct sdhci_acpi_chip *chip; 70c4e05037SAdrian Hunter unsigned int quirks; 71c4e05037SAdrian Hunter unsigned int quirks2; 72c4e05037SAdrian Hunter unsigned long caps; 73c4e05037SAdrian Hunter unsigned int caps2; 74c4e05037SAdrian Hunter mmc_pm_flag_t pm_caps; 75c4e05037SAdrian Hunter unsigned int flags; 76f07b7952SAdrian Hunter size_t priv_size; 777dafca83SAdrian Hunter int (*probe_slot)(struct platform_device *, const char *, const char *); 78578b36b6SGao, Yunpeng int (*remove_slot)(struct platform_device *); 79c4e05037SAdrian Hunter }; 80c4e05037SAdrian Hunter 81c4e05037SAdrian Hunter struct sdhci_acpi_host { 82c4e05037SAdrian Hunter struct sdhci_host *host; 83c4e05037SAdrian Hunter const struct sdhci_acpi_slot *slot; 84c4e05037SAdrian Hunter struct platform_device *pdev; 85c4e05037SAdrian Hunter bool use_runtime_pm; 86f07b7952SAdrian Hunter unsigned long private[0] ____cacheline_aligned; 87c4e05037SAdrian Hunter }; 88c4e05037SAdrian Hunter 89f07b7952SAdrian Hunter static inline void *sdhci_acpi_priv(struct sdhci_acpi_host *c) 90f07b7952SAdrian Hunter { 91f07b7952SAdrian Hunter return (void *)c->private; 92f07b7952SAdrian Hunter } 93f07b7952SAdrian Hunter 94c4e05037SAdrian Hunter static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag) 95c4e05037SAdrian Hunter { 96c4e05037SAdrian Hunter return c->slot && (c->slot->flags & flag); 97c4e05037SAdrian Hunter } 98c4e05037SAdrian Hunter 991c451c13SAdrian Hunter enum { 1001c451c13SAdrian Hunter INTEL_DSM_FNS = 0, 1011c451c13SAdrian Hunter INTEL_DSM_V18_SWITCH = 3, 1021c451c13SAdrian Hunter INTEL_DSM_V33_SWITCH = 4, 1031c451c13SAdrian Hunter }; 1041c451c13SAdrian Hunter 1051c451c13SAdrian Hunter struct intel_host { 1061c451c13SAdrian Hunter u32 dsm_fns; 1071c451c13SAdrian Hunter }; 1081c451c13SAdrian Hunter 1091c451c13SAdrian Hunter static const guid_t intel_dsm_guid = 1101c451c13SAdrian Hunter GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F, 1111c451c13SAdrian Hunter 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61); 1121c451c13SAdrian Hunter 1131c451c13SAdrian Hunter static int __intel_dsm(struct intel_host *intel_host, struct device *dev, 1141c451c13SAdrian Hunter unsigned int fn, u32 *result) 1151c451c13SAdrian Hunter { 1161c451c13SAdrian Hunter union acpi_object *obj; 1171c451c13SAdrian Hunter int err = 0; 1181c451c13SAdrian Hunter 1191c451c13SAdrian Hunter obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL); 1201c451c13SAdrian Hunter if (!obj) 1211c451c13SAdrian Hunter return -EOPNOTSUPP; 1221c451c13SAdrian Hunter 1231c451c13SAdrian Hunter if (obj->type == ACPI_TYPE_INTEGER) { 1241c451c13SAdrian Hunter *result = obj->integer.value; 1251c451c13SAdrian Hunter } else if (obj->type == ACPI_TYPE_BUFFER && obj->buffer.length > 0) { 1261c451c13SAdrian Hunter size_t len = min_t(size_t, obj->buffer.length, 4); 1271c451c13SAdrian Hunter 1281c451c13SAdrian Hunter *result = 0; 1291c451c13SAdrian Hunter memcpy(result, obj->buffer.pointer, len); 1301c451c13SAdrian Hunter } else { 1311c451c13SAdrian Hunter dev_err(dev, "%s DSM fn %u obj->type %d obj->buffer.length %d\n", 1321c451c13SAdrian Hunter __func__, fn, obj->type, obj->buffer.length); 1331c451c13SAdrian Hunter err = -EINVAL; 1341c451c13SAdrian Hunter } 1351c451c13SAdrian Hunter 1361c451c13SAdrian Hunter ACPI_FREE(obj); 1371c451c13SAdrian Hunter 1381c451c13SAdrian Hunter return err; 1391c451c13SAdrian Hunter } 1401c451c13SAdrian Hunter 1411c451c13SAdrian Hunter static int intel_dsm(struct intel_host *intel_host, struct device *dev, 1421c451c13SAdrian Hunter unsigned int fn, u32 *result) 1431c451c13SAdrian Hunter { 1441c451c13SAdrian Hunter if (fn > 31 || !(intel_host->dsm_fns & (1 << fn))) 1451c451c13SAdrian Hunter return -EOPNOTSUPP; 1461c451c13SAdrian Hunter 1471c451c13SAdrian Hunter return __intel_dsm(intel_host, dev, fn, result); 1481c451c13SAdrian Hunter } 1491c451c13SAdrian Hunter 1501c451c13SAdrian Hunter static void intel_dsm_init(struct intel_host *intel_host, struct device *dev, 1511c451c13SAdrian Hunter struct mmc_host *mmc) 1521c451c13SAdrian Hunter { 1531c451c13SAdrian Hunter int err; 1541c451c13SAdrian Hunter 1551c451c13SAdrian Hunter err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns); 1561c451c13SAdrian Hunter if (err) { 1571c451c13SAdrian Hunter pr_debug("%s: DSM not supported, error %d\n", 1581c451c13SAdrian Hunter mmc_hostname(mmc), err); 1591c451c13SAdrian Hunter return; 1601c451c13SAdrian Hunter } 1611c451c13SAdrian Hunter 1621c451c13SAdrian Hunter pr_debug("%s: DSM function mask %#x\n", 1631c451c13SAdrian Hunter mmc_hostname(mmc), intel_host->dsm_fns); 1641c451c13SAdrian Hunter } 1651c451c13SAdrian Hunter 1661c451c13SAdrian Hunter static int intel_start_signal_voltage_switch(struct mmc_host *mmc, 1671c451c13SAdrian Hunter struct mmc_ios *ios) 1681c451c13SAdrian Hunter { 1691c451c13SAdrian Hunter struct device *dev = mmc_dev(mmc); 1701c451c13SAdrian Hunter struct sdhci_acpi_host *c = dev_get_drvdata(dev); 1711c451c13SAdrian Hunter struct intel_host *intel_host = sdhci_acpi_priv(c); 1721c451c13SAdrian Hunter unsigned int fn; 1731c451c13SAdrian Hunter u32 result = 0; 1741c451c13SAdrian Hunter int err; 1751c451c13SAdrian Hunter 1761c451c13SAdrian Hunter err = sdhci_start_signal_voltage_switch(mmc, ios); 1771c451c13SAdrian Hunter if (err) 1781c451c13SAdrian Hunter return err; 1791c451c13SAdrian Hunter 1801c451c13SAdrian Hunter switch (ios->signal_voltage) { 1811c451c13SAdrian Hunter case MMC_SIGNAL_VOLTAGE_330: 1821c451c13SAdrian Hunter fn = INTEL_DSM_V33_SWITCH; 1831c451c13SAdrian Hunter break; 1841c451c13SAdrian Hunter case MMC_SIGNAL_VOLTAGE_180: 1851c451c13SAdrian Hunter fn = INTEL_DSM_V18_SWITCH; 1861c451c13SAdrian Hunter break; 1871c451c13SAdrian Hunter default: 1881c451c13SAdrian Hunter return 0; 1891c451c13SAdrian Hunter } 1901c451c13SAdrian Hunter 1911c451c13SAdrian Hunter err = intel_dsm(intel_host, dev, fn, &result); 1921c451c13SAdrian Hunter pr_debug("%s: %s DSM fn %u error %d result %u\n", 1931c451c13SAdrian Hunter mmc_hostname(mmc), __func__, fn, err, result); 1941c451c13SAdrian Hunter 1951c451c13SAdrian Hunter return 0; 1961c451c13SAdrian Hunter } 1971c451c13SAdrian Hunter 198b04fa064SAdrian Hunter static void sdhci_acpi_int_hw_reset(struct sdhci_host *host) 199b04fa064SAdrian Hunter { 200b04fa064SAdrian Hunter u8 reg; 201b04fa064SAdrian Hunter 202b04fa064SAdrian Hunter reg = sdhci_readb(host, SDHCI_POWER_CONTROL); 203b04fa064SAdrian Hunter reg |= 0x10; 204b04fa064SAdrian Hunter sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 205b04fa064SAdrian Hunter /* For eMMC, minimum is 1us but give it 9us for good measure */ 206b04fa064SAdrian Hunter udelay(9); 207b04fa064SAdrian Hunter reg &= ~0x10; 208b04fa064SAdrian Hunter sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 209b04fa064SAdrian Hunter /* For eMMC, minimum is 200us but give it 300us for good measure */ 210b04fa064SAdrian Hunter usleep_range(300, 1000); 211b04fa064SAdrian Hunter } 212b04fa064SAdrian Hunter 213c4e05037SAdrian Hunter static const struct sdhci_ops sdhci_acpi_ops_dflt = { 2141771059cSRussell King .set_clock = sdhci_set_clock, 2152317f56cSRussell King .set_bus_width = sdhci_set_bus_width, 21603231f9bSRussell King .reset = sdhci_reset, 21796d7b78cSRussell King .set_uhs_signaling = sdhci_set_uhs_signaling, 218c4e05037SAdrian Hunter }; 219c4e05037SAdrian Hunter 220b04fa064SAdrian Hunter static const struct sdhci_ops sdhci_acpi_ops_int = { 2211771059cSRussell King .set_clock = sdhci_set_clock, 2222317f56cSRussell King .set_bus_width = sdhci_set_bus_width, 22303231f9bSRussell King .reset = sdhci_reset, 22496d7b78cSRussell King .set_uhs_signaling = sdhci_set_uhs_signaling, 225b04fa064SAdrian Hunter .hw_reset = sdhci_acpi_int_hw_reset, 226b04fa064SAdrian Hunter }; 227b04fa064SAdrian Hunter 228b04fa064SAdrian Hunter static const struct sdhci_acpi_chip sdhci_acpi_chip_int = { 229b04fa064SAdrian Hunter .ops = &sdhci_acpi_ops_int, 230b04fa064SAdrian Hunter }; 231b04fa064SAdrian Hunter 2326e1c7d61SAdrian Hunter #ifdef CONFIG_X86 2336e1c7d61SAdrian Hunter 2346e1c7d61SAdrian Hunter static bool sdhci_acpi_byt(void) 2356e1c7d61SAdrian Hunter { 2366e1c7d61SAdrian Hunter static const struct x86_cpu_id byt[] = { 2378ba4cb53SDave Hansen { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT1 }, 2386e1c7d61SAdrian Hunter {} 2396e1c7d61SAdrian Hunter }; 2406e1c7d61SAdrian Hunter 2416e1c7d61SAdrian Hunter return x86_match_cpu(byt); 2426e1c7d61SAdrian Hunter } 2436e1c7d61SAdrian Hunter 24417753d16SAdrian Hunter static bool sdhci_acpi_cht(void) 24517753d16SAdrian Hunter { 24617753d16SAdrian Hunter static const struct x86_cpu_id cht[] = { 24717753d16SAdrian Hunter { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_AIRMONT }, 24817753d16SAdrian Hunter {} 24917753d16SAdrian Hunter }; 25017753d16SAdrian Hunter 25117753d16SAdrian Hunter return x86_match_cpu(cht); 25217753d16SAdrian Hunter } 25317753d16SAdrian Hunter 2546e1c7d61SAdrian Hunter #define BYT_IOSF_SCCEP 0x63 2556e1c7d61SAdrian Hunter #define BYT_IOSF_OCP_NETCTRL0 0x1078 2566e1c7d61SAdrian Hunter #define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8) 2576e1c7d61SAdrian Hunter 2586e1c7d61SAdrian Hunter static void sdhci_acpi_byt_setting(struct device *dev) 2596e1c7d61SAdrian Hunter { 2606e1c7d61SAdrian Hunter u32 val = 0; 2616e1c7d61SAdrian Hunter 2626e1c7d61SAdrian Hunter if (!sdhci_acpi_byt()) 2636e1c7d61SAdrian Hunter return; 2646e1c7d61SAdrian Hunter 2656e1c7d61SAdrian Hunter if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0, 2666e1c7d61SAdrian Hunter &val)) { 2676e1c7d61SAdrian Hunter dev_err(dev, "%s read error\n", __func__); 2686e1c7d61SAdrian Hunter return; 2696e1c7d61SAdrian Hunter } 2706e1c7d61SAdrian Hunter 2716e1c7d61SAdrian Hunter if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE)) 2726e1c7d61SAdrian Hunter return; 2736e1c7d61SAdrian Hunter 2746e1c7d61SAdrian Hunter val &= ~BYT_IOSF_OCP_TIMEOUT_BASE; 2756e1c7d61SAdrian Hunter 2766e1c7d61SAdrian Hunter if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0, 2776e1c7d61SAdrian Hunter val)) { 2786e1c7d61SAdrian Hunter dev_err(dev, "%s write error\n", __func__); 2796e1c7d61SAdrian Hunter return; 2806e1c7d61SAdrian Hunter } 2816e1c7d61SAdrian Hunter 2826e1c7d61SAdrian Hunter dev_dbg(dev, "%s completed\n", __func__); 2836e1c7d61SAdrian Hunter } 2846e1c7d61SAdrian Hunter 2856e1c7d61SAdrian Hunter static bool sdhci_acpi_byt_defer(struct device *dev) 2866e1c7d61SAdrian Hunter { 2876e1c7d61SAdrian Hunter if (!sdhci_acpi_byt()) 2886e1c7d61SAdrian Hunter return false; 2896e1c7d61SAdrian Hunter 2906e1c7d61SAdrian Hunter if (!iosf_mbi_available()) 2916e1c7d61SAdrian Hunter return true; 2926e1c7d61SAdrian Hunter 2936e1c7d61SAdrian Hunter sdhci_acpi_byt_setting(dev); 2946e1c7d61SAdrian Hunter 2956e1c7d61SAdrian Hunter return false; 2966e1c7d61SAdrian Hunter } 2976e1c7d61SAdrian Hunter 29817753d16SAdrian Hunter static bool sdhci_acpi_cht_pci_wifi(unsigned int vendor, unsigned int device, 29917753d16SAdrian Hunter unsigned int slot, unsigned int parent_slot) 30017753d16SAdrian Hunter { 30117753d16SAdrian Hunter struct pci_dev *dev, *parent, *from = NULL; 30217753d16SAdrian Hunter 30317753d16SAdrian Hunter while (1) { 30417753d16SAdrian Hunter dev = pci_get_device(vendor, device, from); 30517753d16SAdrian Hunter pci_dev_put(from); 30617753d16SAdrian Hunter if (!dev) 30717753d16SAdrian Hunter break; 30817753d16SAdrian Hunter parent = pci_upstream_bridge(dev); 30917753d16SAdrian Hunter if (ACPI_COMPANION(&dev->dev) && PCI_SLOT(dev->devfn) == slot && 31017753d16SAdrian Hunter parent && PCI_SLOT(parent->devfn) == parent_slot && 31117753d16SAdrian Hunter !pci_upstream_bridge(parent)) { 31217753d16SAdrian Hunter pci_dev_put(dev); 31317753d16SAdrian Hunter return true; 31417753d16SAdrian Hunter } 31517753d16SAdrian Hunter from = dev; 31617753d16SAdrian Hunter } 31717753d16SAdrian Hunter 31817753d16SAdrian Hunter return false; 31917753d16SAdrian Hunter } 32017753d16SAdrian Hunter 32117753d16SAdrian Hunter /* 32217753d16SAdrian Hunter * GPDwin uses PCI wifi which conflicts with SDIO's use of 32317753d16SAdrian Hunter * acpi_device_fix_up_power() on child device nodes. Identifying GPDwin is 32417753d16SAdrian Hunter * problematic, but since SDIO is only used for wifi, the presence of the PCI 32517753d16SAdrian Hunter * wifi card in the expected slot with an ACPI companion node, is used to 32617753d16SAdrian Hunter * indicate that acpi_device_fix_up_power() should be avoided. 32717753d16SAdrian Hunter */ 32817753d16SAdrian Hunter static inline bool sdhci_acpi_no_fixup_child_power(const char *hid, 32917753d16SAdrian Hunter const char *uid) 33017753d16SAdrian Hunter { 33117753d16SAdrian Hunter return sdhci_acpi_cht() && 33217753d16SAdrian Hunter !strcmp(hid, "80860F14") && 33317753d16SAdrian Hunter !strcmp(uid, "2") && 33417753d16SAdrian Hunter sdhci_acpi_cht_pci_wifi(0x14e4, 0x43ec, 0, 28); 33517753d16SAdrian Hunter } 33617753d16SAdrian Hunter 3376e1c7d61SAdrian Hunter #else 3386e1c7d61SAdrian Hunter 3396e1c7d61SAdrian Hunter static inline void sdhci_acpi_byt_setting(struct device *dev) 3406e1c7d61SAdrian Hunter { 3416e1c7d61SAdrian Hunter } 3426e1c7d61SAdrian Hunter 3436e1c7d61SAdrian Hunter static inline bool sdhci_acpi_byt_defer(struct device *dev) 3446e1c7d61SAdrian Hunter { 3456e1c7d61SAdrian Hunter return false; 3466e1c7d61SAdrian Hunter } 3476e1c7d61SAdrian Hunter 34817753d16SAdrian Hunter static inline bool sdhci_acpi_no_fixup_child_power(const char *hid, 34917753d16SAdrian Hunter const char *uid) 35017753d16SAdrian Hunter { 35117753d16SAdrian Hunter return false; 35217753d16SAdrian Hunter } 35317753d16SAdrian Hunter 3546e1c7d61SAdrian Hunter #endif 3556e1c7d61SAdrian Hunter 3566a645dd8SAdrian Hunter static int bxt_get_cd(struct mmc_host *mmc) 3576a645dd8SAdrian Hunter { 3586a645dd8SAdrian Hunter int gpio_cd = mmc_gpio_get_cd(mmc); 3596a645dd8SAdrian Hunter struct sdhci_host *host = mmc_priv(mmc); 3606a645dd8SAdrian Hunter unsigned long flags; 3616a645dd8SAdrian Hunter int ret = 0; 3626a645dd8SAdrian Hunter 3636a645dd8SAdrian Hunter if (!gpio_cd) 3646a645dd8SAdrian Hunter return 0; 3656a645dd8SAdrian Hunter 3666a645dd8SAdrian Hunter spin_lock_irqsave(&host->lock, flags); 3676a645dd8SAdrian Hunter 3686a645dd8SAdrian Hunter if (host->flags & SDHCI_DEVICE_DEAD) 3696a645dd8SAdrian Hunter goto out; 3706a645dd8SAdrian Hunter 3716a645dd8SAdrian Hunter ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); 3726a645dd8SAdrian Hunter out: 3736a645dd8SAdrian Hunter spin_unlock_irqrestore(&host->lock, flags); 3746a645dd8SAdrian Hunter 3756a645dd8SAdrian Hunter return ret; 3766a645dd8SAdrian Hunter } 3776a645dd8SAdrian Hunter 378159cd328SAdrian Hunter static int intel_probe_slot(struct platform_device *pdev, const char *hid, 379159cd328SAdrian Hunter const char *uid) 380578b36b6SGao, Yunpeng { 381578b36b6SGao, Yunpeng struct sdhci_acpi_host *c = platform_get_drvdata(pdev); 3821c451c13SAdrian Hunter struct intel_host *intel_host = sdhci_acpi_priv(c); 383159cd328SAdrian Hunter struct sdhci_host *host = c->host; 384578b36b6SGao, Yunpeng 3858024379eSAdrian Hunter if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") && 3868024379eSAdrian Hunter sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 && 3878024379eSAdrian Hunter sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807) 3888024379eSAdrian Hunter host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ 3898024379eSAdrian Hunter 390d3e97407SAzhar Shaikh if (hid && !strcmp(hid, "80865ACA")) 3916a645dd8SAdrian Hunter host->mmc_host_ops.get_cd = bxt_get_cd; 3926a645dd8SAdrian Hunter 3931c451c13SAdrian Hunter intel_dsm_init(intel_host, &pdev->dev, host->mmc); 3941c451c13SAdrian Hunter 3951c451c13SAdrian Hunter host->mmc_host_ops.start_signal_voltage_switch = 3961c451c13SAdrian Hunter intel_start_signal_voltage_switch; 3971c451c13SAdrian Hunter 398578b36b6SGao, Yunpeng return 0; 399578b36b6SGao, Yunpeng } 400578b36b6SGao, Yunpeng 40107a58883SAdrian Hunter static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = { 402b04fa064SAdrian Hunter .chip = &sdhci_acpi_chip_int, 403f25c3372SMaurice Petallo .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | 4049d65cb88SAdrian Hunter MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR | 405c80f275fSAdrian Hunter MMC_CAP_CMD_DURING_TFR | MMC_CAP_WAIT_WHILE_BUSY, 40607a58883SAdrian Hunter .flags = SDHCI_ACPI_RUNTIME_PM, 407e1f5633aSAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 408e839b134SAdrian Hunter .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 409e839b134SAdrian Hunter SDHCI_QUIRK2_STOP_WITH_TC | 410e839b134SAdrian Hunter SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400, 411159cd328SAdrian Hunter .probe_slot = intel_probe_slot, 4121c451c13SAdrian Hunter .priv_size = sizeof(struct intel_host), 41307a58883SAdrian Hunter }; 41407a58883SAdrian Hunter 415e5571397SAdrian Hunter static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { 416e1f5633aSAdrian Hunter .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION | 417e1f5633aSAdrian Hunter SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 418e5571397SAdrian Hunter .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, 4199d65cb88SAdrian Hunter .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD | 420265984b3SAdrian Hunter MMC_CAP_WAIT_WHILE_BUSY, 421e5571397SAdrian Hunter .flags = SDHCI_ACPI_RUNTIME_PM, 422e5571397SAdrian Hunter .pm_caps = MMC_PM_KEEP_POWER, 423159cd328SAdrian Hunter .probe_slot = intel_probe_slot, 4241c451c13SAdrian Hunter .priv_size = sizeof(struct intel_host), 425e5571397SAdrian Hunter }; 426e5571397SAdrian Hunter 42707a58883SAdrian Hunter static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = { 4284fd4409cSAdrian Hunter .flags = SDHCI_ACPI_SD_CD | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL | 4294fd4409cSAdrian Hunter SDHCI_ACPI_RUNTIME_PM, 430e1f5633aSAdrian Hunter .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 431934e31b9SAdrian Hunter .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON | 432934e31b9SAdrian Hunter SDHCI_QUIRK2_STOP_WITH_TC, 433d3e97407SAzhar Shaikh .caps = MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_AGGRESSIVE_PM, 434159cd328SAdrian Hunter .probe_slot = intel_probe_slot, 4351c451c13SAdrian Hunter .priv_size = sizeof(struct intel_host), 43607a58883SAdrian Hunter }; 43707a58883SAdrian Hunter 43870cce2afSPhilip Elcan static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd_3v = { 43970cce2afSPhilip Elcan .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION, 44070cce2afSPhilip Elcan .quirks2 = SDHCI_QUIRK2_NO_1_8_V, 44170cce2afSPhilip Elcan .caps = MMC_CAP_NONREMOVABLE, 44270cce2afSPhilip Elcan }; 44370cce2afSPhilip Elcan 44470cce2afSPhilip Elcan static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd = { 44570cce2afSPhilip Elcan .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION, 44670cce2afSPhilip Elcan .caps = MMC_CAP_NONREMOVABLE, 44770cce2afSPhilip Elcan }; 44870cce2afSPhilip Elcan 44934597a3fSShah Nehal-Bakulchandra /* AMD sdhci reset dll register. */ 45034597a3fSShah Nehal-Bakulchandra #define SDHCI_AMD_RESET_DLL_REGISTER 0x908 45134597a3fSShah Nehal-Bakulchandra 45234597a3fSShah Nehal-Bakulchandra static int amd_select_drive_strength(struct mmc_card *card, 45334597a3fSShah Nehal-Bakulchandra unsigned int max_dtr, int host_drv, 45434597a3fSShah Nehal-Bakulchandra int card_drv, int *drv_type) 45534597a3fSShah Nehal-Bakulchandra { 45634597a3fSShah Nehal-Bakulchandra return MMC_SET_DRIVER_TYPE_A; 45734597a3fSShah Nehal-Bakulchandra } 45834597a3fSShah Nehal-Bakulchandra 45934597a3fSShah Nehal-Bakulchandra static void sdhci_acpi_amd_hs400_dll(struct sdhci_host *host) 46034597a3fSShah Nehal-Bakulchandra { 46134597a3fSShah Nehal-Bakulchandra /* AMD Platform requires dll setting */ 46234597a3fSShah Nehal-Bakulchandra sdhci_writel(host, 0x40003210, SDHCI_AMD_RESET_DLL_REGISTER); 46334597a3fSShah Nehal-Bakulchandra usleep_range(10, 20); 46434597a3fSShah Nehal-Bakulchandra sdhci_writel(host, 0x40033210, SDHCI_AMD_RESET_DLL_REGISTER); 46534597a3fSShah Nehal-Bakulchandra } 46634597a3fSShah Nehal-Bakulchandra 46734597a3fSShah Nehal-Bakulchandra /* 46834597a3fSShah Nehal-Bakulchandra * For AMD Platform it is required to disable the tuning 46934597a3fSShah Nehal-Bakulchandra * bit first controller to bring to HS Mode from HS200 47034597a3fSShah Nehal-Bakulchandra * mode, later enable to tune to HS400 mode. 47134597a3fSShah Nehal-Bakulchandra */ 47234597a3fSShah Nehal-Bakulchandra static void amd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 47334597a3fSShah Nehal-Bakulchandra { 47434597a3fSShah Nehal-Bakulchandra struct sdhci_host *host = mmc_priv(mmc); 47534597a3fSShah Nehal-Bakulchandra unsigned int old_timing = host->timing; 47634597a3fSShah Nehal-Bakulchandra 47734597a3fSShah Nehal-Bakulchandra sdhci_set_ios(mmc, ios); 47834597a3fSShah Nehal-Bakulchandra if (old_timing == MMC_TIMING_MMC_HS200 && 47934597a3fSShah Nehal-Bakulchandra ios->timing == MMC_TIMING_MMC_HS) 48034597a3fSShah Nehal-Bakulchandra sdhci_writew(host, 0x9, SDHCI_HOST_CONTROL2); 48134597a3fSShah Nehal-Bakulchandra if (old_timing != MMC_TIMING_MMC_HS400 && 48234597a3fSShah Nehal-Bakulchandra ios->timing == MMC_TIMING_MMC_HS400) { 48334597a3fSShah Nehal-Bakulchandra sdhci_writew(host, 0x80, SDHCI_HOST_CONTROL2); 48434597a3fSShah Nehal-Bakulchandra sdhci_acpi_amd_hs400_dll(host); 48534597a3fSShah Nehal-Bakulchandra } 48634597a3fSShah Nehal-Bakulchandra } 48734597a3fSShah Nehal-Bakulchandra 48834597a3fSShah Nehal-Bakulchandra static const struct sdhci_ops sdhci_acpi_ops_amd = { 48934597a3fSShah Nehal-Bakulchandra .set_clock = sdhci_set_clock, 49034597a3fSShah Nehal-Bakulchandra .set_bus_width = sdhci_set_bus_width, 49134597a3fSShah Nehal-Bakulchandra .reset = sdhci_reset, 49234597a3fSShah Nehal-Bakulchandra .set_uhs_signaling = sdhci_set_uhs_signaling, 49334597a3fSShah Nehal-Bakulchandra }; 49434597a3fSShah Nehal-Bakulchandra 49534597a3fSShah Nehal-Bakulchandra static const struct sdhci_acpi_chip sdhci_acpi_chip_amd = { 49634597a3fSShah Nehal-Bakulchandra .ops = &sdhci_acpi_ops_amd, 49734597a3fSShah Nehal-Bakulchandra }; 49834597a3fSShah Nehal-Bakulchandra 49934597a3fSShah Nehal-Bakulchandra static int sdhci_acpi_emmc_amd_probe_slot(struct platform_device *pdev, 50034597a3fSShah Nehal-Bakulchandra const char *hid, const char *uid) 50134597a3fSShah Nehal-Bakulchandra { 50234597a3fSShah Nehal-Bakulchandra struct sdhci_acpi_host *c = platform_get_drvdata(pdev); 50334597a3fSShah Nehal-Bakulchandra struct sdhci_host *host = c->host; 50434597a3fSShah Nehal-Bakulchandra 50534597a3fSShah Nehal-Bakulchandra sdhci_read_caps(host); 50634597a3fSShah Nehal-Bakulchandra if (host->caps1 & SDHCI_SUPPORT_DDR50) 50734597a3fSShah Nehal-Bakulchandra host->mmc->caps = MMC_CAP_1_8V_DDR; 50834597a3fSShah Nehal-Bakulchandra 50934597a3fSShah Nehal-Bakulchandra if ((host->caps1 & SDHCI_SUPPORT_SDR104) && 51034597a3fSShah Nehal-Bakulchandra (host->mmc->caps & MMC_CAP_1_8V_DDR)) 51134597a3fSShah Nehal-Bakulchandra host->mmc->caps2 = MMC_CAP2_HS400_1_8V; 51234597a3fSShah Nehal-Bakulchandra 51334597a3fSShah Nehal-Bakulchandra host->mmc_host_ops.select_drive_strength = amd_select_drive_strength; 51434597a3fSShah Nehal-Bakulchandra host->mmc_host_ops.set_ios = amd_set_ios; 51534597a3fSShah Nehal-Bakulchandra return 0; 51634597a3fSShah Nehal-Bakulchandra } 51734597a3fSShah Nehal-Bakulchandra 51834597a3fSShah Nehal-Bakulchandra static const struct sdhci_acpi_slot sdhci_acpi_slot_amd_emmc = { 51934597a3fSShah Nehal-Bakulchandra .chip = &sdhci_acpi_chip_amd, 52034597a3fSShah Nehal-Bakulchandra .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE, 52134597a3fSShah Nehal-Bakulchandra .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE | 52234597a3fSShah Nehal-Bakulchandra SDHCI_QUIRK_32BIT_ADMA_SIZE, 52334597a3fSShah Nehal-Bakulchandra .probe_slot = sdhci_acpi_emmc_amd_probe_slot, 52434597a3fSShah Nehal-Bakulchandra }; 52534597a3fSShah Nehal-Bakulchandra 52607a58883SAdrian Hunter struct sdhci_acpi_uid_slot { 52707a58883SAdrian Hunter const char *hid; 52807a58883SAdrian Hunter const char *uid; 52907a58883SAdrian Hunter const struct sdhci_acpi_slot *slot; 53007a58883SAdrian Hunter }; 53107a58883SAdrian Hunter 53207a58883SAdrian Hunter static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = { 533e839b134SAdrian Hunter { "80865ACA", NULL, &sdhci_acpi_slot_int_sd }, 534e839b134SAdrian Hunter { "80865ACC", NULL, &sdhci_acpi_slot_int_emmc }, 535e839b134SAdrian Hunter { "80865AD0", NULL, &sdhci_acpi_slot_int_sdio }, 53607a58883SAdrian Hunter { "80860F14" , "1" , &sdhci_acpi_slot_int_emmc }, 537db52d4f8SDaniel Drake { "80860F14" , "2" , &sdhci_acpi_slot_int_sdio }, 53807a58883SAdrian Hunter { "80860F14" , "3" , &sdhci_acpi_slot_int_sd }, 539aad95dc4SAdrian Hunter { "80860F16" , NULL, &sdhci_acpi_slot_int_sd }, 54007a58883SAdrian Hunter { "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio }, 5417147eaf3SAdrian Hunter { "INT33BB" , "3" , &sdhci_acpi_slot_int_sd }, 54207a58883SAdrian Hunter { "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio }, 54307c001c1SMika Westerberg { "INT3436" , NULL, &sdhci_acpi_slot_int_sdio }, 544d0ed8e6bSAdrian Hunter { "INT344D" , NULL, &sdhci_acpi_slot_int_sdio }, 5450cd2f044SMichele Curti { "PNP0FFF" , "3" , &sdhci_acpi_slot_int_sd }, 54607a58883SAdrian Hunter { "PNP0D40" }, 54770cce2afSPhilip Elcan { "QCOM8051", NULL, &sdhci_acpi_slot_qcom_sd_3v }, 54870cce2afSPhilip Elcan { "QCOM8052", NULL, &sdhci_acpi_slot_qcom_sd }, 54934597a3fSShah Nehal-Bakulchandra { "AMDI0040", NULL, &sdhci_acpi_slot_amd_emmc }, 55007a58883SAdrian Hunter { }, 55107a58883SAdrian Hunter }; 55207a58883SAdrian Hunter 553c4e05037SAdrian Hunter static const struct acpi_device_id sdhci_acpi_ids[] = { 554e839b134SAdrian Hunter { "80865ACA" }, 555e839b134SAdrian Hunter { "80865ACC" }, 556e839b134SAdrian Hunter { "80865AD0" }, 55707a58883SAdrian Hunter { "80860F14" }, 558aad95dc4SAdrian Hunter { "80860F16" }, 55907a58883SAdrian Hunter { "INT33BB" }, 56007a58883SAdrian Hunter { "INT33C6" }, 56107c001c1SMika Westerberg { "INT3436" }, 562d0ed8e6bSAdrian Hunter { "INT344D" }, 563c4e05037SAdrian Hunter { "PNP0D40" }, 56470cce2afSPhilip Elcan { "QCOM8051" }, 56570cce2afSPhilip Elcan { "QCOM8052" }, 56634597a3fSShah Nehal-Bakulchandra { "AMDI0040" }, 567c4e05037SAdrian Hunter { }, 568c4e05037SAdrian Hunter }; 569c4e05037SAdrian Hunter MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids); 570c4e05037SAdrian Hunter 5713db35251SAdrian Hunter static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid, 57207a58883SAdrian Hunter const char *uid) 573c4e05037SAdrian Hunter { 57407a58883SAdrian Hunter const struct sdhci_acpi_uid_slot *u; 575c4e05037SAdrian Hunter 57607a58883SAdrian Hunter for (u = sdhci_acpi_uids; u->hid; u++) { 57707a58883SAdrian Hunter if (strcmp(u->hid, hid)) 57807a58883SAdrian Hunter continue; 57907a58883SAdrian Hunter if (!u->uid) 58007a58883SAdrian Hunter return u->slot; 58107a58883SAdrian Hunter if (uid && !strcmp(u->uid, uid)) 58207a58883SAdrian Hunter return u->slot; 58307a58883SAdrian Hunter } 584c4e05037SAdrian Hunter return NULL; 585c4e05037SAdrian Hunter } 586c4e05037SAdrian Hunter 5874e608e4eSGreg Kroah-Hartman static int sdhci_acpi_probe(struct platform_device *pdev) 588c4e05037SAdrian Hunter { 589c4e05037SAdrian Hunter struct device *dev = &pdev->dev; 590f07b7952SAdrian Hunter const struct sdhci_acpi_slot *slot; 591e5bbf307SAdrian Hunter struct acpi_device *device, *child; 592c4e05037SAdrian Hunter struct sdhci_acpi_host *c; 593c4e05037SAdrian Hunter struct sdhci_host *host; 594c4e05037SAdrian Hunter struct resource *iomem; 595c4e05037SAdrian Hunter resource_size_t len; 596f07b7952SAdrian Hunter size_t priv_size; 597c4e05037SAdrian Hunter const char *hid; 5983db35251SAdrian Hunter const char *uid; 59987875655SMika Westerberg int err; 600c4e05037SAdrian Hunter 601cd25c7beSAndy Shevchenko device = ACPI_COMPANION(dev); 602cd25c7beSAndy Shevchenko if (!device) 603c4e05037SAdrian Hunter return -ENODEV; 604c4e05037SAdrian Hunter 60517753d16SAdrian Hunter hid = acpi_device_hid(device); 606a2038497SAdrian Hunter uid = acpi_device_uid(device); 60717753d16SAdrian Hunter 608f07b7952SAdrian Hunter slot = sdhci_acpi_get_slot(hid, uid); 609f07b7952SAdrian Hunter 610e5bbf307SAdrian Hunter /* Power on the SDHCI controller and its children */ 611e5bbf307SAdrian Hunter acpi_device_fix_up_power(device); 61217753d16SAdrian Hunter if (!sdhci_acpi_no_fixup_child_power(hid, uid)) { 613e5bbf307SAdrian Hunter list_for_each_entry(child, &device->children, node) 614e1d070c3SHans de Goede if (child->status.present && child->status.enabled) 615e5bbf307SAdrian Hunter acpi_device_fix_up_power(child); 61617753d16SAdrian Hunter } 617e5bbf307SAdrian Hunter 6186e1c7d61SAdrian Hunter if (sdhci_acpi_byt_defer(dev)) 6196e1c7d61SAdrian Hunter return -EPROBE_DEFER; 6206e1c7d61SAdrian Hunter 621c4e05037SAdrian Hunter iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 622c4e05037SAdrian Hunter if (!iomem) 623c4e05037SAdrian Hunter return -ENOMEM; 624c4e05037SAdrian Hunter 625c4e05037SAdrian Hunter len = resource_size(iomem); 626c4e05037SAdrian Hunter if (len < 0x100) 627c4e05037SAdrian Hunter dev_err(dev, "Invalid iomem size!\n"); 628c4e05037SAdrian Hunter 629c4e05037SAdrian Hunter if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev))) 630c4e05037SAdrian Hunter return -ENOMEM; 631c4e05037SAdrian Hunter 632f07b7952SAdrian Hunter priv_size = slot ? slot->priv_size : 0; 633f07b7952SAdrian Hunter host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host) + priv_size); 634c4e05037SAdrian Hunter if (IS_ERR(host)) 635c4e05037SAdrian Hunter return PTR_ERR(host); 636c4e05037SAdrian Hunter 637c4e05037SAdrian Hunter c = sdhci_priv(host); 638c4e05037SAdrian Hunter c->host = host; 639f07b7952SAdrian Hunter c->slot = slot; 640c4e05037SAdrian Hunter c->pdev = pdev; 641c4e05037SAdrian Hunter c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM); 642c4e05037SAdrian Hunter 643c4e05037SAdrian Hunter platform_set_drvdata(pdev, c); 644c4e05037SAdrian Hunter 645c4e05037SAdrian Hunter host->hw_name = "ACPI"; 646c4e05037SAdrian Hunter host->ops = &sdhci_acpi_ops_dflt; 647c4e05037SAdrian Hunter host->irq = platform_get_irq(pdev, 0); 648c4e05037SAdrian Hunter 649c4e05037SAdrian Hunter host->ioaddr = devm_ioremap_nocache(dev, iomem->start, 650c4e05037SAdrian Hunter resource_size(iomem)); 651c4e05037SAdrian Hunter if (host->ioaddr == NULL) { 652c4e05037SAdrian Hunter err = -ENOMEM; 653c4e05037SAdrian Hunter goto err_free; 654c4e05037SAdrian Hunter } 655c4e05037SAdrian Hunter 656c4e05037SAdrian Hunter if (c->slot) { 657578b36b6SGao, Yunpeng if (c->slot->probe_slot) { 6587dafca83SAdrian Hunter err = c->slot->probe_slot(pdev, hid, uid); 659578b36b6SGao, Yunpeng if (err) 660578b36b6SGao, Yunpeng goto err_free; 661578b36b6SGao, Yunpeng } 662c4e05037SAdrian Hunter if (c->slot->chip) { 663c4e05037SAdrian Hunter host->ops = c->slot->chip->ops; 664c4e05037SAdrian Hunter host->quirks |= c->slot->chip->quirks; 665c4e05037SAdrian Hunter host->quirks2 |= c->slot->chip->quirks2; 666c4e05037SAdrian Hunter host->mmc->caps |= c->slot->chip->caps; 667c4e05037SAdrian Hunter host->mmc->caps2 |= c->slot->chip->caps2; 668c4e05037SAdrian Hunter host->mmc->pm_caps |= c->slot->chip->pm_caps; 669c4e05037SAdrian Hunter } 670c4e05037SAdrian Hunter host->quirks |= c->slot->quirks; 671c4e05037SAdrian Hunter host->quirks2 |= c->slot->quirks2; 672c4e05037SAdrian Hunter host->mmc->caps |= c->slot->caps; 673c4e05037SAdrian Hunter host->mmc->caps2 |= c->slot->caps2; 674c4e05037SAdrian Hunter host->mmc->pm_caps |= c->slot->pm_caps; 675c4e05037SAdrian Hunter } 676c4e05037SAdrian Hunter 6770d3e3350SAdrian Hunter host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; 6780d3e3350SAdrian Hunter 6794fd4409cSAdrian Hunter if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) { 6804fd4409cSAdrian Hunter bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL); 6814fd4409cSAdrian Hunter 682e28d6f04SZhang Rui err = mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL); 683e28d6f04SZhang Rui if (err) { 684e28d6f04SZhang Rui if (err == -EPROBE_DEFER) 685e28d6f04SZhang Rui goto err_free; 6864fd4409cSAdrian Hunter dev_warn(dev, "failed to setup card detect gpio\n"); 6874fd4409cSAdrian Hunter c->use_runtime_pm = false; 6884fd4409cSAdrian Hunter } 6894fd4409cSAdrian Hunter } 6904fd4409cSAdrian Hunter 691c4e05037SAdrian Hunter err = sdhci_add_host(host); 692c4e05037SAdrian Hunter if (err) 693c4e05037SAdrian Hunter goto err_free; 694c4e05037SAdrian Hunter 695c4e05037SAdrian Hunter if (c->use_runtime_pm) { 6961d1ff458SAdrian Hunter pm_runtime_set_active(dev); 697c4e05037SAdrian Hunter pm_suspend_ignore_children(dev, 1); 698c4e05037SAdrian Hunter pm_runtime_set_autosuspend_delay(dev, 50); 699c4e05037SAdrian Hunter pm_runtime_use_autosuspend(dev); 700c4e05037SAdrian Hunter pm_runtime_enable(dev); 701c4e05037SAdrian Hunter } 702c4e05037SAdrian Hunter 7034e6a2ef9SFu, Zhonghui device_enable_async_suspend(dev); 7044e6a2ef9SFu, Zhonghui 705c4e05037SAdrian Hunter return 0; 706c4e05037SAdrian Hunter 707c4e05037SAdrian Hunter err_free: 708c4e05037SAdrian Hunter sdhci_free_host(c->host); 709c4e05037SAdrian Hunter return err; 710c4e05037SAdrian Hunter } 711c4e05037SAdrian Hunter 7124e608e4eSGreg Kroah-Hartman static int sdhci_acpi_remove(struct platform_device *pdev) 713c4e05037SAdrian Hunter { 714c4e05037SAdrian Hunter struct sdhci_acpi_host *c = platform_get_drvdata(pdev); 715c4e05037SAdrian Hunter struct device *dev = &pdev->dev; 716c4e05037SAdrian Hunter int dead; 717c4e05037SAdrian Hunter 718c4e05037SAdrian Hunter if (c->use_runtime_pm) { 719c4e05037SAdrian Hunter pm_runtime_get_sync(dev); 720c4e05037SAdrian Hunter pm_runtime_disable(dev); 721c4e05037SAdrian Hunter pm_runtime_put_noidle(dev); 722c4e05037SAdrian Hunter } 723c4e05037SAdrian Hunter 724578b36b6SGao, Yunpeng if (c->slot && c->slot->remove_slot) 725578b36b6SGao, Yunpeng c->slot->remove_slot(pdev); 726578b36b6SGao, Yunpeng 727c4e05037SAdrian Hunter dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0); 728c4e05037SAdrian Hunter sdhci_remove_host(c->host, dead); 729c4e05037SAdrian Hunter sdhci_free_host(c->host); 730c4e05037SAdrian Hunter 731c4e05037SAdrian Hunter return 0; 732c4e05037SAdrian Hunter } 733c4e05037SAdrian Hunter 734c4e05037SAdrian Hunter #ifdef CONFIG_PM_SLEEP 735c4e05037SAdrian Hunter 736c4e05037SAdrian Hunter static int sdhci_acpi_suspend(struct device *dev) 737c4e05037SAdrian Hunter { 738c4e05037SAdrian Hunter struct sdhci_acpi_host *c = dev_get_drvdata(dev); 739d38dcad4SAdrian Hunter struct sdhci_host *host = c->host; 740c4e05037SAdrian Hunter 741d38dcad4SAdrian Hunter if (host->tuning_mode != SDHCI_TUNING_MODE_3) 742d38dcad4SAdrian Hunter mmc_retune_needed(host->mmc); 743d38dcad4SAdrian Hunter 744d38dcad4SAdrian Hunter return sdhci_suspend_host(host); 745c4e05037SAdrian Hunter } 746c4e05037SAdrian Hunter 747c4e05037SAdrian Hunter static int sdhci_acpi_resume(struct device *dev) 748c4e05037SAdrian Hunter { 749c4e05037SAdrian Hunter struct sdhci_acpi_host *c = dev_get_drvdata(dev); 750c4e05037SAdrian Hunter 7516e1c7d61SAdrian Hunter sdhci_acpi_byt_setting(&c->pdev->dev); 7526e1c7d61SAdrian Hunter 753c4e05037SAdrian Hunter return sdhci_resume_host(c->host); 754c4e05037SAdrian Hunter } 755c4e05037SAdrian Hunter 756c4e05037SAdrian Hunter #endif 757c4e05037SAdrian Hunter 758162d6f98SRafael J. Wysocki #ifdef CONFIG_PM 759c4e05037SAdrian Hunter 760c4e05037SAdrian Hunter static int sdhci_acpi_runtime_suspend(struct device *dev) 761c4e05037SAdrian Hunter { 762c4e05037SAdrian Hunter struct sdhci_acpi_host *c = dev_get_drvdata(dev); 763d38dcad4SAdrian Hunter struct sdhci_host *host = c->host; 764c4e05037SAdrian Hunter 765d38dcad4SAdrian Hunter if (host->tuning_mode != SDHCI_TUNING_MODE_3) 766d38dcad4SAdrian Hunter mmc_retune_needed(host->mmc); 767d38dcad4SAdrian Hunter 768d38dcad4SAdrian Hunter return sdhci_runtime_suspend_host(host); 769c4e05037SAdrian Hunter } 770c4e05037SAdrian Hunter 771c4e05037SAdrian Hunter static int sdhci_acpi_runtime_resume(struct device *dev) 772c4e05037SAdrian Hunter { 773c4e05037SAdrian Hunter struct sdhci_acpi_host *c = dev_get_drvdata(dev); 774c4e05037SAdrian Hunter 7756e1c7d61SAdrian Hunter sdhci_acpi_byt_setting(&c->pdev->dev); 7766e1c7d61SAdrian Hunter 777c4e05037SAdrian Hunter return sdhci_runtime_resume_host(c->host); 778c4e05037SAdrian Hunter } 779c4e05037SAdrian Hunter 780c4e05037SAdrian Hunter #endif 781c4e05037SAdrian Hunter 782c4e05037SAdrian Hunter static const struct dev_pm_ops sdhci_acpi_pm_ops = { 783dafed447SUlf Hansson SET_SYSTEM_SLEEP_PM_OPS(sdhci_acpi_suspend, sdhci_acpi_resume) 7841d75f74bSPeter Griffin SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend, 7859b449e99SUlf Hansson sdhci_acpi_runtime_resume, NULL) 786c4e05037SAdrian Hunter }; 787c4e05037SAdrian Hunter 788c4e05037SAdrian Hunter static struct platform_driver sdhci_acpi_driver = { 789c4e05037SAdrian Hunter .driver = { 790c4e05037SAdrian Hunter .name = "sdhci-acpi", 791c4e05037SAdrian Hunter .acpi_match_table = sdhci_acpi_ids, 792c4e05037SAdrian Hunter .pm = &sdhci_acpi_pm_ops, 793c4e05037SAdrian Hunter }, 794c4e05037SAdrian Hunter .probe = sdhci_acpi_probe, 7954e608e4eSGreg Kroah-Hartman .remove = sdhci_acpi_remove, 796c4e05037SAdrian Hunter }; 797c4e05037SAdrian Hunter 798c4e05037SAdrian Hunter module_platform_driver(sdhci_acpi_driver); 799c4e05037SAdrian Hunter 800c4e05037SAdrian Hunter MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver"); 801c4e05037SAdrian Hunter MODULE_AUTHOR("Adrian Hunter"); 802c4e05037SAdrian Hunter MODULE_LICENSE("GPL v2"); 803