15fd54aceSGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 272246da4SFelipe Balbi /** 372246da4SFelipe Balbi * dwc3-pci.c - PCI Specific glue layer 472246da4SFelipe Balbi * 572246da4SFelipe Balbi * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 672246da4SFelipe Balbi * 772246da4SFelipe Balbi * Authors: Felipe Balbi <balbi@ti.com>, 872246da4SFelipe Balbi * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 972246da4SFelipe Balbi */ 1072246da4SFelipe Balbi 1172246da4SFelipe Balbi #include <linux/kernel.h> 1246a57283SStephen Rothwell #include <linux/module.h> 1372246da4SFelipe Balbi #include <linux/slab.h> 1472246da4SFelipe Balbi #include <linux/pci.h> 158eed00b2SManu Gautam #include <linux/workqueue.h> 16e9af9229SFelipe Balbi #include <linux/pm_runtime.h> 1772246da4SFelipe Balbi #include <linux/platform_device.h> 18a89d977cSHeikki Krogerus #include <linux/gpio/consumer.h> 195741022cSHans de Goede #include <linux/gpio/machine.h> 20a89d977cSHeikki Krogerus #include <linux/acpi.h> 21cf48305dSHeikki Krogerus #include <linux/delay.h> 228f317b47SHuang Rui 23b62cd96dSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 2485601f8cSDavid Cohen #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e 259a5a0783SJohn Youn #define PCI_DEVICE_ID_INTEL_BSW 0x22b7 2684a2b61bSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 2784a2b61bSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 28b4c580a4SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BXT 0x0aaa 291ffb4d5cSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa 30b4c580a4SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_APL 0x5aaa 314491ed50SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_KBP 0xa2b0 328f8983a5SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_GLK 0x31aa 3368217959SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_CNPLP 0x9dee 3468217959SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_CNPH 0xa36e 3500908693SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_ICLLP 0x34ee 3672246da4SFelipe Balbi 3794116f81SAndy Shevchenko #define PCI_INTEL_BXT_DSM_GUID "732b85d5-b7a7-4a1b-9ba0-4bbd00ffd511" 389cecca75SFelipe Balbi #define PCI_INTEL_BXT_FUNC_PMU_PWR 4 399cecca75SFelipe Balbi #define PCI_INTEL_BXT_STATE_D0 0 409cecca75SFelipe Balbi #define PCI_INTEL_BXT_STATE_D3 3 419cecca75SFelipe Balbi 427740d04dSHans de Goede #define GP_RWBAR 1 437740d04dSHans de Goede #define GP_RWREG1 0xa0 447740d04dSHans de Goede #define GP_RWREG1_ULPI_REFCLK_DISABLE (1 << 17) 457740d04dSHans de Goede 460f817ae6SFelipe Balbi /** 470f817ae6SFelipe Balbi * struct dwc3_pci - Driver private structure 480f817ae6SFelipe Balbi * @dwc3: child dwc3 platform_device 490f817ae6SFelipe Balbi * @pci: our link to PCI bus 5094116f81SAndy Shevchenko * @guid: _DSM GUID 519cecca75SFelipe Balbi * @has_dsm_for_pm: true for devices which need to run _DSM on runtime PM 52*87d852deSAndy Shevchenko * @wakeup_work: work for asynchronous resume 530f817ae6SFelipe Balbi */ 540f817ae6SFelipe Balbi struct dwc3_pci { 550f817ae6SFelipe Balbi struct platform_device *dwc3; 560f817ae6SFelipe Balbi struct pci_dev *pci; 579cecca75SFelipe Balbi 5894116f81SAndy Shevchenko guid_t guid; 599cecca75SFelipe Balbi 609cecca75SFelipe Balbi unsigned int has_dsm_for_pm:1; 618eed00b2SManu Gautam struct work_struct wakeup_work; 620f817ae6SFelipe Balbi }; 630f817ae6SFelipe Balbi 64a89d977cSHeikki Krogerus static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; 65a89d977cSHeikki Krogerus static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; 66a89d977cSHeikki Krogerus 67a89d977cSHeikki Krogerus static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { 68a89d977cSHeikki Krogerus { "reset-gpios", &reset_gpios, 1 }, 69a89d977cSHeikki Krogerus { "cs-gpios", &cs_gpios, 1 }, 70a89d977cSHeikki Krogerus { }, 71a89d977cSHeikki Krogerus }; 72a89d977cSHeikki Krogerus 735741022cSHans de Goede static struct gpiod_lookup_table platform_bytcr_gpios = { 745741022cSHans de Goede .dev_id = "0000:00:16.0", 755741022cSHans de Goede .table = { 765741022cSHans de Goede GPIO_LOOKUP("INT33FC:00", 54, "reset", GPIO_ACTIVE_HIGH), 775741022cSHans de Goede GPIO_LOOKUP("INT33FC:02", 14, "cs", GPIO_ACTIVE_HIGH), 785741022cSHans de Goede {} 795741022cSHans de Goede }, 805741022cSHans de Goede }; 815741022cSHans de Goede 827740d04dSHans de Goede static int dwc3_byt_enable_ulpi_refclock(struct pci_dev *pci) 837740d04dSHans de Goede { 847740d04dSHans de Goede void __iomem *reg; 857740d04dSHans de Goede u32 value; 867740d04dSHans de Goede 877740d04dSHans de Goede reg = pcim_iomap(pci, GP_RWBAR, 0); 887740d04dSHans de Goede if (IS_ERR(reg)) 897740d04dSHans de Goede return PTR_ERR(reg); 907740d04dSHans de Goede 917740d04dSHans de Goede value = readl(reg + GP_RWREG1); 927740d04dSHans de Goede if (!(value & GP_RWREG1_ULPI_REFCLK_DISABLE)) 937740d04dSHans de Goede goto unmap; /* ULPI refclk already enabled */ 947740d04dSHans de Goede 957740d04dSHans de Goede value &= ~GP_RWREG1_ULPI_REFCLK_DISABLE; 967740d04dSHans de Goede writel(value, reg + GP_RWREG1); 977740d04dSHans de Goede /* This comes from the Intel Android x86 tree w/o any explanation */ 987740d04dSHans de Goede msleep(100); 997740d04dSHans de Goede unmap: 1007740d04dSHans de Goede pcim_iounmap(pci, reg); 1017740d04dSHans de Goede return 0; 1027740d04dSHans de Goede } 1037740d04dSHans de Goede 1040f817ae6SFelipe Balbi static int dwc3_pci_quirks(struct dwc3_pci *dwc) 1052cd9ddf7SHeikki Krogerus { 1060f817ae6SFelipe Balbi struct platform_device *dwc3 = dwc->dwc3; 1070f817ae6SFelipe Balbi struct pci_dev *pdev = dwc->pci; 1080f817ae6SFelipe Balbi 1092cd9ddf7SHeikki Krogerus if (pdev->vendor == PCI_VENDOR_ID_AMD && 1102cd9ddf7SHeikki Krogerus pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { 111cf48305dSHeikki Krogerus struct property_entry properties[] = { 112cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), 113cf48305dSHeikki Krogerus PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf), 114cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,u2exit_lfps_quirk"), 115cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,u2ss_inp3_quirk"), 116cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,req_p1p2p3_quirk"), 117cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,del_p1p2p3_quirk"), 118cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,del_phy_power_chg_quirk"), 119cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,lfps_filter_quirk"), 120cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,rx_detect_poll_quirk"), 121cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,tx_de_emphasis_quirk"), 122cf48305dSHeikki Krogerus PROPERTY_ENTRY_U8("snps,tx_de_emphasis", 1), 1232cd9ddf7SHeikki Krogerus /* 1242cd9ddf7SHeikki Krogerus * FIXME these quirks should be removed when AMD NL 125cf48305dSHeikki Krogerus * tapes out 1262cd9ddf7SHeikki Krogerus */ 127cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,disable_scramble_quirk"), 128cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,dis_u3_susphy_quirk"), 129cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"), 1300eae2fdeSJohn Youn PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), 131cf48305dSHeikki Krogerus { }, 132cf48305dSHeikki Krogerus }; 1332cd9ddf7SHeikki Krogerus 134cf48305dSHeikki Krogerus return platform_device_add_properties(dwc3, properties); 1352cd9ddf7SHeikki Krogerus } 1362cd9ddf7SHeikki Krogerus 137e6fe66feSFelipe Balbi if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 138e6fe66feSFelipe Balbi int ret; 139e6fe66feSFelipe Balbi 140e6fe66feSFelipe Balbi struct property_entry properties[] = { 14151c1685dSHans de Goede PROPERTY_ENTRY_STRING("dr_mode", "peripheral"), 1420eae2fdeSJohn Youn PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), 143e6fe66feSFelipe Balbi { } 144e6fe66feSFelipe Balbi }; 145e6fe66feSFelipe Balbi 146e6fe66feSFelipe Balbi ret = platform_device_add_properties(dwc3, properties); 147e6fe66feSFelipe Balbi if (ret < 0) 148e6fe66feSFelipe Balbi return ret; 149e6fe66feSFelipe Balbi 1509cecca75SFelipe Balbi if (pdev->device == PCI_DEVICE_ID_INTEL_BXT || 1519cecca75SFelipe Balbi pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) { 15294116f81SAndy Shevchenko guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid); 1539cecca75SFelipe Balbi dwc->has_dsm_for_pm = true; 1549cecca75SFelipe Balbi } 1559cecca75SFelipe Balbi 156e6fe66feSFelipe Balbi if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) { 157a89d977cSHeikki Krogerus struct gpio_desc *gpio; 158a89d977cSHeikki Krogerus 1597740d04dSHans de Goede /* On BYT the FW does not always enable the refclock */ 1607740d04dSHans de Goede ret = dwc3_byt_enable_ulpi_refclock(pdev); 1617740d04dSHans de Goede if (ret) 1627740d04dSHans de Goede return ret; 1637740d04dSHans de Goede 1644a56e413SAndy Shevchenko ret = devm_acpi_dev_add_driver_gpios(&pdev->dev, 165a89d977cSHeikki Krogerus acpi_dwc3_byt_gpios); 1664a56e413SAndy Shevchenko if (ret) 1674a56e413SAndy Shevchenko dev_dbg(&pdev->dev, "failed to add mapping table\n"); 168a89d977cSHeikki Krogerus 1692df033caSUwe Kleine-König /* 1705741022cSHans de Goede * A lot of BYT devices lack ACPI resource entries for 1715741022cSHans de Goede * the GPIOs, add a fallback mapping to the reference 1725741022cSHans de Goede * design GPIOs which all boards seem to use. 1735741022cSHans de Goede */ 1745741022cSHans de Goede gpiod_add_lookup_table(&platform_bytcr_gpios); 1755741022cSHans de Goede 1765741022cSHans de Goede /* 1772df033caSUwe Kleine-König * These GPIOs will turn on the USB2 PHY. Note that we have to 1782df033caSUwe Kleine-König * put the gpio descriptors again here because the phy driver 1792df033caSUwe Kleine-König * might want to grab them, too. 1802df033caSUwe Kleine-König */ 181211f658bSHans de Goede gpio = devm_gpiod_get_optional(&pdev->dev, "cs", 182211f658bSHans de Goede GPIOD_OUT_LOW); 1832df033caSUwe Kleine-König if (IS_ERR(gpio)) 1842df033caSUwe Kleine-König return PTR_ERR(gpio); 1852df033caSUwe Kleine-König 186a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 187a89d977cSHeikki Krogerus 188211f658bSHans de Goede gpio = devm_gpiod_get_optional(&pdev->dev, "reset", 189211f658bSHans de Goede GPIOD_OUT_LOW); 1902df033caSUwe Kleine-König if (IS_ERR(gpio)) 1912df033caSUwe Kleine-König return PTR_ERR(gpio); 1922df033caSUwe Kleine-König 1932df033caSUwe Kleine-König if (gpio) { 194a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 195a89d977cSHeikki Krogerus usleep_range(10000, 11000); 196a89d977cSHeikki Krogerus } 197a89d977cSHeikki Krogerus } 198e6fe66feSFelipe Balbi } 199a89d977cSHeikki Krogerus 2002cd9ddf7SHeikki Krogerus return 0; 2012cd9ddf7SHeikki Krogerus } 20272246da4SFelipe Balbi 2038eed00b2SManu Gautam #ifdef CONFIG_PM 2048eed00b2SManu Gautam static void dwc3_pci_resume_work(struct work_struct *work) 2058eed00b2SManu Gautam { 2068eed00b2SManu Gautam struct dwc3_pci *dwc = container_of(work, struct dwc3_pci, wakeup_work); 2078eed00b2SManu Gautam struct platform_device *dwc3 = dwc->dwc3; 2088eed00b2SManu Gautam int ret; 2098eed00b2SManu Gautam 2108eed00b2SManu Gautam ret = pm_runtime_get_sync(&dwc3->dev); 2118eed00b2SManu Gautam if (ret) 2128eed00b2SManu Gautam return; 2138eed00b2SManu Gautam 2148eed00b2SManu Gautam pm_runtime_mark_last_busy(&dwc3->dev); 2158eed00b2SManu Gautam pm_runtime_put_sync_autosuspend(&dwc3->dev); 2168eed00b2SManu Gautam } 2178eed00b2SManu Gautam #endif 2188eed00b2SManu Gautam 21941ac7b3aSBill Pemberton static int dwc3_pci_probe(struct pci_dev *pci, 22072246da4SFelipe Balbi const struct pci_device_id *id) 22172246da4SFelipe Balbi { 2220f817ae6SFelipe Balbi struct dwc3_pci *dwc; 22372246da4SFelipe Balbi struct resource res[2]; 224b09e99eeSAndy Shevchenko int ret; 225802ca850SChanho Park struct device *dev = &pci->dev; 22672246da4SFelipe Balbi 227f1c7e710SAndy Shevchenko ret = pcim_enable_device(pci); 22872246da4SFelipe Balbi if (ret) { 229802ca850SChanho Park dev_err(dev, "failed to enable pci device\n"); 230802ca850SChanho Park return -ENODEV; 23172246da4SFelipe Balbi } 23272246da4SFelipe Balbi 23372246da4SFelipe Balbi pci_set_master(pci); 23472246da4SFelipe Balbi 2350f817ae6SFelipe Balbi dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL); 2360f817ae6SFelipe Balbi if (!dwc) 237f1c7e710SAndy Shevchenko return -ENOMEM; 2380f817ae6SFelipe Balbi 2390f817ae6SFelipe Balbi dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); 2400f817ae6SFelipe Balbi if (!dwc->dwc3) 2410f817ae6SFelipe Balbi return -ENOMEM; 24272246da4SFelipe Balbi 24372246da4SFelipe Balbi memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); 24472246da4SFelipe Balbi 24572246da4SFelipe Balbi res[0].start = pci_resource_start(pci, 0); 24672246da4SFelipe Balbi res[0].end = pci_resource_end(pci, 0); 24772246da4SFelipe Balbi res[0].name = "dwc_usb3"; 24872246da4SFelipe Balbi res[0].flags = IORESOURCE_MEM; 24972246da4SFelipe Balbi 25072246da4SFelipe Balbi res[1].start = pci->irq; 25172246da4SFelipe Balbi res[1].name = "dwc_usb3"; 25272246da4SFelipe Balbi res[1].flags = IORESOURCE_IRQ; 25372246da4SFelipe Balbi 2540f817ae6SFelipe Balbi ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res)); 25572246da4SFelipe Balbi if (ret) { 256802ca850SChanho Park dev_err(dev, "couldn't add resources to dwc3 device\n"); 257cabdf83dSThinh Nguyen goto err; 25872246da4SFelipe Balbi } 25972246da4SFelipe Balbi 2600f817ae6SFelipe Balbi dwc->pci = pci; 2610f817ae6SFelipe Balbi dwc->dwc3->dev.parent = dev; 2620f817ae6SFelipe Balbi ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev)); 26372246da4SFelipe Balbi 2640f817ae6SFelipe Balbi ret = dwc3_pci_quirks(dwc); 265474799f0SHeikki Krogerus if (ret) 266474799f0SHeikki Krogerus goto err; 267474799f0SHeikki Krogerus 2680f817ae6SFelipe Balbi ret = platform_device_add(dwc->dwc3); 26972246da4SFelipe Balbi if (ret) { 270802ca850SChanho Park dev_err(dev, "failed to register dwc3 device\n"); 2712cd9ddf7SHeikki Krogerus goto err; 27272246da4SFelipe Balbi } 27372246da4SFelipe Balbi 274e9af9229SFelipe Balbi device_init_wakeup(dev, true); 2750f817ae6SFelipe Balbi pci_set_drvdata(pci, dwc); 276e9af9229SFelipe Balbi pm_runtime_put(dev); 2778eed00b2SManu Gautam #ifdef CONFIG_PM 2788eed00b2SManu Gautam INIT_WORK(&dwc->wakeup_work, dwc3_pci_resume_work); 2798eed00b2SManu Gautam #endif 280e9af9229SFelipe Balbi 28172246da4SFelipe Balbi return 0; 2822cd9ddf7SHeikki Krogerus err: 2830f817ae6SFelipe Balbi platform_device_put(dwc->dwc3); 28472246da4SFelipe Balbi return ret; 28572246da4SFelipe Balbi } 28672246da4SFelipe Balbi 287fb4e98abSBill Pemberton static void dwc3_pci_remove(struct pci_dev *pci) 28872246da4SFelipe Balbi { 2890f817ae6SFelipe Balbi struct dwc3_pci *dwc = pci_get_drvdata(pci); 2900f817ae6SFelipe Balbi 2915741022cSHans de Goede gpiod_remove_lookup_table(&platform_bytcr_gpios); 2928eed00b2SManu Gautam #ifdef CONFIG_PM 2938eed00b2SManu Gautam cancel_work_sync(&dwc->wakeup_work); 2948eed00b2SManu Gautam #endif 295e9af9229SFelipe Balbi device_init_wakeup(&pci->dev, false); 296e9af9229SFelipe Balbi pm_runtime_get(&pci->dev); 2970f817ae6SFelipe Balbi platform_device_unregister(dwc->dwc3); 29872246da4SFelipe Balbi } 29972246da4SFelipe Balbi 300782df20cSJingoo Han static const struct pci_device_id dwc3_pci_id_table[] = { 3017d643664SAlan Cox { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, 302b62cd96dSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, 30385601f8cSDavid Cohen { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, 30484a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, 30584a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, 306b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), }, 3071ffb4d5cSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), }, 308b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, 3094491ed50SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), }, 3108f8983a5SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), }, 31168217959SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPLP), }, 31268217959SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPH), }, 31300908693SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICLLP), }, 3149755449dSHuang Rui { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, 31572246da4SFelipe Balbi { } /* Terminating Entry */ 31672246da4SFelipe Balbi }; 31772246da4SFelipe Balbi MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 31872246da4SFelipe Balbi 31936daf3aaSFelipe Balbi #if defined(CONFIG_PM) || defined(CONFIG_PM_SLEEP) 32036daf3aaSFelipe Balbi static int dwc3_pci_dsm(struct dwc3_pci *dwc, int param) 32136daf3aaSFelipe Balbi { 32236daf3aaSFelipe Balbi union acpi_object *obj; 32336daf3aaSFelipe Balbi union acpi_object tmp; 32436daf3aaSFelipe Balbi union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp); 32536daf3aaSFelipe Balbi 32636daf3aaSFelipe Balbi if (!dwc->has_dsm_for_pm) 32736daf3aaSFelipe Balbi return 0; 32836daf3aaSFelipe Balbi 32936daf3aaSFelipe Balbi tmp.type = ACPI_TYPE_INTEGER; 33036daf3aaSFelipe Balbi tmp.integer.value = param; 33136daf3aaSFelipe Balbi 33294116f81SAndy Shevchenko obj = acpi_evaluate_dsm(ACPI_HANDLE(&dwc->pci->dev), &dwc->guid, 33336daf3aaSFelipe Balbi 1, PCI_INTEL_BXT_FUNC_PMU_PWR, &argv4); 33436daf3aaSFelipe Balbi if (!obj) { 33536daf3aaSFelipe Balbi dev_err(&dwc->pci->dev, "failed to evaluate _DSM\n"); 33636daf3aaSFelipe Balbi return -EIO; 33736daf3aaSFelipe Balbi } 33836daf3aaSFelipe Balbi 33936daf3aaSFelipe Balbi ACPI_FREE(obj); 34036daf3aaSFelipe Balbi 34136daf3aaSFelipe Balbi return 0; 34236daf3aaSFelipe Balbi } 34336daf3aaSFelipe Balbi #endif /* CONFIG_PM || CONFIG_PM_SLEEP */ 34436daf3aaSFelipe Balbi 345e9af9229SFelipe Balbi #ifdef CONFIG_PM 346e9af9229SFelipe Balbi static int dwc3_pci_runtime_suspend(struct device *dev) 347e9af9229SFelipe Balbi { 3489cecca75SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3499cecca75SFelipe Balbi 350de3ef1ebSRafael J. Wysocki if (device_can_wakeup(dev)) 3519cecca75SFelipe Balbi return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3); 352e9af9229SFelipe Balbi 353e9af9229SFelipe Balbi return -EBUSY; 354e9af9229SFelipe Balbi } 355e9af9229SFelipe Balbi 356f6c274e1SFelipe Balbi static int dwc3_pci_runtime_resume(struct device *dev) 357f6c274e1SFelipe Balbi { 3580f817ae6SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3599cecca75SFelipe Balbi int ret; 3609cecca75SFelipe Balbi 3619cecca75SFelipe Balbi ret = dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0); 3629cecca75SFelipe Balbi if (ret) 3639cecca75SFelipe Balbi return ret; 364f6c274e1SFelipe Balbi 3658eed00b2SManu Gautam queue_work(pm_wq, &dwc->wakeup_work); 3668eed00b2SManu Gautam 3678eed00b2SManu Gautam return 0; 368f6c274e1SFelipe Balbi } 369696118c0SFelipe Balbi #endif /* CONFIG_PM */ 370f6c274e1SFelipe Balbi 371696118c0SFelipe Balbi #ifdef CONFIG_PM_SLEEP 3729cecca75SFelipe Balbi static int dwc3_pci_suspend(struct device *dev) 373e9af9229SFelipe Balbi { 3749cecca75SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3759cecca75SFelipe Balbi 3769cecca75SFelipe Balbi return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3); 3779cecca75SFelipe Balbi } 3789cecca75SFelipe Balbi 3799cecca75SFelipe Balbi static int dwc3_pci_resume(struct device *dev) 3809cecca75SFelipe Balbi { 3819cecca75SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3829cecca75SFelipe Balbi 3839cecca75SFelipe Balbi return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0); 384e9af9229SFelipe Balbi } 385696118c0SFelipe Balbi #endif /* CONFIG_PM_SLEEP */ 386e9af9229SFelipe Balbi 38795aa932cSDoug Wilson static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { 3889cecca75SFelipe Balbi SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) 389f6c274e1SFelipe Balbi SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume, 390e9af9229SFelipe Balbi NULL) 391e9af9229SFelipe Balbi }; 392e9af9229SFelipe Balbi 39372246da4SFelipe Balbi static struct pci_driver dwc3_pci_driver = { 3940949e99bSFelipe Balbi .name = "dwc3-pci", 39572246da4SFelipe Balbi .id_table = dwc3_pci_id_table, 39672246da4SFelipe Balbi .probe = dwc3_pci_probe, 3977690417dSBill Pemberton .remove = dwc3_pci_remove, 398e9af9229SFelipe Balbi .driver = { 399e9af9229SFelipe Balbi .pm = &dwc3_pci_dev_pm_ops, 400e9af9229SFelipe Balbi } 40172246da4SFelipe Balbi }; 40272246da4SFelipe Balbi 40372246da4SFelipe Balbi MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 4045945f789SFelipe Balbi MODULE_LICENSE("GPL v2"); 40572246da4SFelipe Balbi MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 40672246da4SFelipe Balbi 40795656336SGreg Kroah-Hartman module_pci_driver(dwc3_pci_driver); 408