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> 19*5741022cSHans 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 420f817ae6SFelipe Balbi /** 430f817ae6SFelipe Balbi * struct dwc3_pci - Driver private structure 440f817ae6SFelipe Balbi * @dwc3: child dwc3 platform_device 450f817ae6SFelipe Balbi * @pci: our link to PCI bus 4694116f81SAndy Shevchenko * @guid: _DSM GUID 479cecca75SFelipe Balbi * @has_dsm_for_pm: true for devices which need to run _DSM on runtime PM 480f817ae6SFelipe Balbi */ 490f817ae6SFelipe Balbi struct dwc3_pci { 500f817ae6SFelipe Balbi struct platform_device *dwc3; 510f817ae6SFelipe Balbi struct pci_dev *pci; 529cecca75SFelipe Balbi 5394116f81SAndy Shevchenko guid_t guid; 549cecca75SFelipe Balbi 559cecca75SFelipe Balbi unsigned int has_dsm_for_pm:1; 568eed00b2SManu Gautam struct work_struct wakeup_work; 570f817ae6SFelipe Balbi }; 580f817ae6SFelipe Balbi 59a89d977cSHeikki Krogerus static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; 60a89d977cSHeikki Krogerus static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; 61a89d977cSHeikki Krogerus 62a89d977cSHeikki Krogerus static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { 63a89d977cSHeikki Krogerus { "reset-gpios", &reset_gpios, 1 }, 64a89d977cSHeikki Krogerus { "cs-gpios", &cs_gpios, 1 }, 65a89d977cSHeikki Krogerus { }, 66a89d977cSHeikki Krogerus }; 67a89d977cSHeikki Krogerus 68*5741022cSHans de Goede static struct gpiod_lookup_table platform_bytcr_gpios = { 69*5741022cSHans de Goede .dev_id = "0000:00:16.0", 70*5741022cSHans de Goede .table = { 71*5741022cSHans de Goede GPIO_LOOKUP("INT33FC:00", 54, "reset", GPIO_ACTIVE_HIGH), 72*5741022cSHans de Goede GPIO_LOOKUP("INT33FC:02", 14, "cs", GPIO_ACTIVE_HIGH), 73*5741022cSHans de Goede {} 74*5741022cSHans de Goede }, 75*5741022cSHans de Goede }; 76*5741022cSHans de Goede 770f817ae6SFelipe Balbi static int dwc3_pci_quirks(struct dwc3_pci *dwc) 782cd9ddf7SHeikki Krogerus { 790f817ae6SFelipe Balbi struct platform_device *dwc3 = dwc->dwc3; 800f817ae6SFelipe Balbi struct pci_dev *pdev = dwc->pci; 810f817ae6SFelipe Balbi 822cd9ddf7SHeikki Krogerus if (pdev->vendor == PCI_VENDOR_ID_AMD && 832cd9ddf7SHeikki Krogerus pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { 84cf48305dSHeikki Krogerus struct property_entry properties[] = { 85cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"), 86cf48305dSHeikki Krogerus PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf), 87cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,u2exit_lfps_quirk"), 88cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,u2ss_inp3_quirk"), 89cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,req_p1p2p3_quirk"), 90cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,del_p1p2p3_quirk"), 91cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,del_phy_power_chg_quirk"), 92cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,lfps_filter_quirk"), 93cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,rx_detect_poll_quirk"), 94cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,tx_de_emphasis_quirk"), 95cf48305dSHeikki Krogerus PROPERTY_ENTRY_U8("snps,tx_de_emphasis", 1), 962cd9ddf7SHeikki Krogerus /* 972cd9ddf7SHeikki Krogerus * FIXME these quirks should be removed when AMD NL 98cf48305dSHeikki Krogerus * tapes out 992cd9ddf7SHeikki Krogerus */ 100cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,disable_scramble_quirk"), 101cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,dis_u3_susphy_quirk"), 102cf48305dSHeikki Krogerus PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"), 1030eae2fdeSJohn Youn PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), 104cf48305dSHeikki Krogerus { }, 105cf48305dSHeikki Krogerus }; 1062cd9ddf7SHeikki Krogerus 107cf48305dSHeikki Krogerus return platform_device_add_properties(dwc3, properties); 1082cd9ddf7SHeikki Krogerus } 1092cd9ddf7SHeikki Krogerus 110e6fe66feSFelipe Balbi if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 111e6fe66feSFelipe Balbi int ret; 112e6fe66feSFelipe Balbi 113e6fe66feSFelipe Balbi struct property_entry properties[] = { 11451c1685dSHans de Goede PROPERTY_ENTRY_STRING("dr_mode", "peripheral"), 1150eae2fdeSJohn Youn PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"), 116e6fe66feSFelipe Balbi { } 117e6fe66feSFelipe Balbi }; 118e6fe66feSFelipe Balbi 119e6fe66feSFelipe Balbi ret = platform_device_add_properties(dwc3, properties); 120e6fe66feSFelipe Balbi if (ret < 0) 121e6fe66feSFelipe Balbi return ret; 122e6fe66feSFelipe Balbi 1239cecca75SFelipe Balbi if (pdev->device == PCI_DEVICE_ID_INTEL_BXT || 1249cecca75SFelipe Balbi pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) { 12594116f81SAndy Shevchenko guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid); 1269cecca75SFelipe Balbi dwc->has_dsm_for_pm = true; 1279cecca75SFelipe Balbi } 1289cecca75SFelipe Balbi 129e6fe66feSFelipe Balbi if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) { 130a89d977cSHeikki Krogerus struct gpio_desc *gpio; 131a89d977cSHeikki Krogerus 1324a56e413SAndy Shevchenko ret = devm_acpi_dev_add_driver_gpios(&pdev->dev, 133a89d977cSHeikki Krogerus acpi_dwc3_byt_gpios); 1344a56e413SAndy Shevchenko if (ret) 1354a56e413SAndy Shevchenko dev_dbg(&pdev->dev, "failed to add mapping table\n"); 136a89d977cSHeikki Krogerus 1372df033caSUwe Kleine-König /* 138*5741022cSHans de Goede * A lot of BYT devices lack ACPI resource entries for 139*5741022cSHans de Goede * the GPIOs, add a fallback mapping to the reference 140*5741022cSHans de Goede * design GPIOs which all boards seem to use. 141*5741022cSHans de Goede */ 142*5741022cSHans de Goede gpiod_add_lookup_table(&platform_bytcr_gpios); 143*5741022cSHans de Goede 144*5741022cSHans de Goede /* 1452df033caSUwe Kleine-König * These GPIOs will turn on the USB2 PHY. Note that we have to 1462df033caSUwe Kleine-König * put the gpio descriptors again here because the phy driver 1472df033caSUwe Kleine-König * might want to grab them, too. 1482df033caSUwe Kleine-König */ 1492df033caSUwe Kleine-König gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); 1502df033caSUwe Kleine-König if (IS_ERR(gpio)) 1512df033caSUwe Kleine-König return PTR_ERR(gpio); 1522df033caSUwe Kleine-König 153a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 154a89d977cSHeikki Krogerus gpiod_put(gpio); 155a89d977cSHeikki Krogerus 1562df033caSUwe Kleine-König gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); 1572df033caSUwe Kleine-König if (IS_ERR(gpio)) 1582df033caSUwe Kleine-König return PTR_ERR(gpio); 1592df033caSUwe Kleine-König 1602df033caSUwe Kleine-König if (gpio) { 161a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 162a89d977cSHeikki Krogerus gpiod_put(gpio); 163a89d977cSHeikki Krogerus usleep_range(10000, 11000); 164a89d977cSHeikki Krogerus } 165a89d977cSHeikki Krogerus } 166e6fe66feSFelipe Balbi } 167a89d977cSHeikki Krogerus 1682cd9ddf7SHeikki Krogerus return 0; 1692cd9ddf7SHeikki Krogerus } 17072246da4SFelipe Balbi 1718eed00b2SManu Gautam #ifdef CONFIG_PM 1728eed00b2SManu Gautam static void dwc3_pci_resume_work(struct work_struct *work) 1738eed00b2SManu Gautam { 1748eed00b2SManu Gautam struct dwc3_pci *dwc = container_of(work, struct dwc3_pci, wakeup_work); 1758eed00b2SManu Gautam struct platform_device *dwc3 = dwc->dwc3; 1768eed00b2SManu Gautam int ret; 1778eed00b2SManu Gautam 1788eed00b2SManu Gautam ret = pm_runtime_get_sync(&dwc3->dev); 1798eed00b2SManu Gautam if (ret) 1808eed00b2SManu Gautam return; 1818eed00b2SManu Gautam 1828eed00b2SManu Gautam pm_runtime_mark_last_busy(&dwc3->dev); 1838eed00b2SManu Gautam pm_runtime_put_sync_autosuspend(&dwc3->dev); 1848eed00b2SManu Gautam } 1858eed00b2SManu Gautam #endif 1868eed00b2SManu Gautam 18741ac7b3aSBill Pemberton static int dwc3_pci_probe(struct pci_dev *pci, 18872246da4SFelipe Balbi const struct pci_device_id *id) 18972246da4SFelipe Balbi { 1900f817ae6SFelipe Balbi struct dwc3_pci *dwc; 19172246da4SFelipe Balbi struct resource res[2]; 192b09e99eeSAndy Shevchenko int ret; 193802ca850SChanho Park struct device *dev = &pci->dev; 19472246da4SFelipe Balbi 195f1c7e710SAndy Shevchenko ret = pcim_enable_device(pci); 19672246da4SFelipe Balbi if (ret) { 197802ca850SChanho Park dev_err(dev, "failed to enable pci device\n"); 198802ca850SChanho Park return -ENODEV; 19972246da4SFelipe Balbi } 20072246da4SFelipe Balbi 20172246da4SFelipe Balbi pci_set_master(pci); 20272246da4SFelipe Balbi 2030f817ae6SFelipe Balbi dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL); 2040f817ae6SFelipe Balbi if (!dwc) 205f1c7e710SAndy Shevchenko return -ENOMEM; 2060f817ae6SFelipe Balbi 2070f817ae6SFelipe Balbi dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); 2080f817ae6SFelipe Balbi if (!dwc->dwc3) 2090f817ae6SFelipe Balbi return -ENOMEM; 21072246da4SFelipe Balbi 21172246da4SFelipe Balbi memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); 21272246da4SFelipe Balbi 21372246da4SFelipe Balbi res[0].start = pci_resource_start(pci, 0); 21472246da4SFelipe Balbi res[0].end = pci_resource_end(pci, 0); 21572246da4SFelipe Balbi res[0].name = "dwc_usb3"; 21672246da4SFelipe Balbi res[0].flags = IORESOURCE_MEM; 21772246da4SFelipe Balbi 21872246da4SFelipe Balbi res[1].start = pci->irq; 21972246da4SFelipe Balbi res[1].name = "dwc_usb3"; 22072246da4SFelipe Balbi res[1].flags = IORESOURCE_IRQ; 22172246da4SFelipe Balbi 2220f817ae6SFelipe Balbi ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res)); 22372246da4SFelipe Balbi if (ret) { 224802ca850SChanho Park dev_err(dev, "couldn't add resources to dwc3 device\n"); 225cabdf83dSThinh Nguyen goto err; 22672246da4SFelipe Balbi } 22772246da4SFelipe Balbi 2280f817ae6SFelipe Balbi dwc->pci = pci; 2290f817ae6SFelipe Balbi dwc->dwc3->dev.parent = dev; 2300f817ae6SFelipe Balbi ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev)); 23172246da4SFelipe Balbi 2320f817ae6SFelipe Balbi ret = dwc3_pci_quirks(dwc); 233474799f0SHeikki Krogerus if (ret) 234474799f0SHeikki Krogerus goto err; 235474799f0SHeikki Krogerus 2360f817ae6SFelipe Balbi ret = platform_device_add(dwc->dwc3); 23772246da4SFelipe Balbi if (ret) { 238802ca850SChanho Park dev_err(dev, "failed to register dwc3 device\n"); 2392cd9ddf7SHeikki Krogerus goto err; 24072246da4SFelipe Balbi } 24172246da4SFelipe Balbi 242e9af9229SFelipe Balbi device_init_wakeup(dev, true); 2430f817ae6SFelipe Balbi pci_set_drvdata(pci, dwc); 244e9af9229SFelipe Balbi pm_runtime_put(dev); 2458eed00b2SManu Gautam #ifdef CONFIG_PM 2468eed00b2SManu Gautam INIT_WORK(&dwc->wakeup_work, dwc3_pci_resume_work); 2478eed00b2SManu Gautam #endif 248e9af9229SFelipe Balbi 24972246da4SFelipe Balbi return 0; 2502cd9ddf7SHeikki Krogerus err: 2510f817ae6SFelipe Balbi platform_device_put(dwc->dwc3); 25272246da4SFelipe Balbi return ret; 25372246da4SFelipe Balbi } 25472246da4SFelipe Balbi 255fb4e98abSBill Pemberton static void dwc3_pci_remove(struct pci_dev *pci) 25672246da4SFelipe Balbi { 2570f817ae6SFelipe Balbi struct dwc3_pci *dwc = pci_get_drvdata(pci); 2580f817ae6SFelipe Balbi 259*5741022cSHans de Goede gpiod_remove_lookup_table(&platform_bytcr_gpios); 2608eed00b2SManu Gautam #ifdef CONFIG_PM 2618eed00b2SManu Gautam cancel_work_sync(&dwc->wakeup_work); 2628eed00b2SManu Gautam #endif 263e9af9229SFelipe Balbi device_init_wakeup(&pci->dev, false); 264e9af9229SFelipe Balbi pm_runtime_get(&pci->dev); 2650f817ae6SFelipe Balbi platform_device_unregister(dwc->dwc3); 26672246da4SFelipe Balbi } 26772246da4SFelipe Balbi 268782df20cSJingoo Han static const struct pci_device_id dwc3_pci_id_table[] = { 2697d643664SAlan Cox { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, 270b62cd96dSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, 27185601f8cSDavid Cohen { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, 27284a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, 27384a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, 274b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), }, 2751ffb4d5cSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), }, 276b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, 2774491ed50SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), }, 2788f8983a5SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_GLK), }, 27968217959SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPLP), }, 28068217959SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CNPH), }, 28100908693SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICLLP), }, 2829755449dSHuang Rui { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, 28372246da4SFelipe Balbi { } /* Terminating Entry */ 28472246da4SFelipe Balbi }; 28572246da4SFelipe Balbi MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 28672246da4SFelipe Balbi 28736daf3aaSFelipe Balbi #if defined(CONFIG_PM) || defined(CONFIG_PM_SLEEP) 28836daf3aaSFelipe Balbi static int dwc3_pci_dsm(struct dwc3_pci *dwc, int param) 28936daf3aaSFelipe Balbi { 29036daf3aaSFelipe Balbi union acpi_object *obj; 29136daf3aaSFelipe Balbi union acpi_object tmp; 29236daf3aaSFelipe Balbi union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp); 29336daf3aaSFelipe Balbi 29436daf3aaSFelipe Balbi if (!dwc->has_dsm_for_pm) 29536daf3aaSFelipe Balbi return 0; 29636daf3aaSFelipe Balbi 29736daf3aaSFelipe Balbi tmp.type = ACPI_TYPE_INTEGER; 29836daf3aaSFelipe Balbi tmp.integer.value = param; 29936daf3aaSFelipe Balbi 30094116f81SAndy Shevchenko obj = acpi_evaluate_dsm(ACPI_HANDLE(&dwc->pci->dev), &dwc->guid, 30136daf3aaSFelipe Balbi 1, PCI_INTEL_BXT_FUNC_PMU_PWR, &argv4); 30236daf3aaSFelipe Balbi if (!obj) { 30336daf3aaSFelipe Balbi dev_err(&dwc->pci->dev, "failed to evaluate _DSM\n"); 30436daf3aaSFelipe Balbi return -EIO; 30536daf3aaSFelipe Balbi } 30636daf3aaSFelipe Balbi 30736daf3aaSFelipe Balbi ACPI_FREE(obj); 30836daf3aaSFelipe Balbi 30936daf3aaSFelipe Balbi return 0; 31036daf3aaSFelipe Balbi } 31136daf3aaSFelipe Balbi #endif /* CONFIG_PM || CONFIG_PM_SLEEP */ 31236daf3aaSFelipe Balbi 313e9af9229SFelipe Balbi #ifdef CONFIG_PM 314e9af9229SFelipe Balbi static int dwc3_pci_runtime_suspend(struct device *dev) 315e9af9229SFelipe Balbi { 3169cecca75SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3179cecca75SFelipe Balbi 318de3ef1ebSRafael J. Wysocki if (device_can_wakeup(dev)) 3199cecca75SFelipe Balbi return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3); 320e9af9229SFelipe Balbi 321e9af9229SFelipe Balbi return -EBUSY; 322e9af9229SFelipe Balbi } 323e9af9229SFelipe Balbi 324f6c274e1SFelipe Balbi static int dwc3_pci_runtime_resume(struct device *dev) 325f6c274e1SFelipe Balbi { 3260f817ae6SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3279cecca75SFelipe Balbi int ret; 3289cecca75SFelipe Balbi 3299cecca75SFelipe Balbi ret = dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0); 3309cecca75SFelipe Balbi if (ret) 3319cecca75SFelipe Balbi return ret; 332f6c274e1SFelipe Balbi 3338eed00b2SManu Gautam queue_work(pm_wq, &dwc->wakeup_work); 3348eed00b2SManu Gautam 3358eed00b2SManu Gautam return 0; 336f6c274e1SFelipe Balbi } 337696118c0SFelipe Balbi #endif /* CONFIG_PM */ 338f6c274e1SFelipe Balbi 339696118c0SFelipe Balbi #ifdef CONFIG_PM_SLEEP 3409cecca75SFelipe Balbi static int dwc3_pci_suspend(struct device *dev) 341e9af9229SFelipe Balbi { 3429cecca75SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3439cecca75SFelipe Balbi 3449cecca75SFelipe Balbi return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D3); 3459cecca75SFelipe Balbi } 3469cecca75SFelipe Balbi 3479cecca75SFelipe Balbi static int dwc3_pci_resume(struct device *dev) 3489cecca75SFelipe Balbi { 3499cecca75SFelipe Balbi struct dwc3_pci *dwc = dev_get_drvdata(dev); 3509cecca75SFelipe Balbi 3519cecca75SFelipe Balbi return dwc3_pci_dsm(dwc, PCI_INTEL_BXT_STATE_D0); 352e9af9229SFelipe Balbi } 353696118c0SFelipe Balbi #endif /* CONFIG_PM_SLEEP */ 354e9af9229SFelipe Balbi 35595aa932cSDoug Wilson static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { 3569cecca75SFelipe Balbi SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) 357f6c274e1SFelipe Balbi SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume, 358e9af9229SFelipe Balbi NULL) 359e9af9229SFelipe Balbi }; 360e9af9229SFelipe Balbi 36172246da4SFelipe Balbi static struct pci_driver dwc3_pci_driver = { 3620949e99bSFelipe Balbi .name = "dwc3-pci", 36372246da4SFelipe Balbi .id_table = dwc3_pci_id_table, 36472246da4SFelipe Balbi .probe = dwc3_pci_probe, 3657690417dSBill Pemberton .remove = dwc3_pci_remove, 366e9af9229SFelipe Balbi .driver = { 367e9af9229SFelipe Balbi .pm = &dwc3_pci_dev_pm_ops, 368e9af9229SFelipe Balbi } 36972246da4SFelipe Balbi }; 37072246da4SFelipe Balbi 37172246da4SFelipe Balbi MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 3725945f789SFelipe Balbi MODULE_LICENSE("GPL v2"); 37372246da4SFelipe Balbi MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 37472246da4SFelipe Balbi 37595656336SGreg Kroah-Hartman module_pci_driver(dwc3_pci_driver); 376