172246da4SFelipe Balbi /** 272246da4SFelipe Balbi * dwc3-pci.c - PCI Specific glue layer 372246da4SFelipe Balbi * 472246da4SFelipe Balbi * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 572246da4SFelipe Balbi * 672246da4SFelipe Balbi * Authors: Felipe Balbi <balbi@ti.com>, 772246da4SFelipe Balbi * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 872246da4SFelipe Balbi * 95945f789SFelipe Balbi * This program is free software: you can redistribute it and/or modify 105945f789SFelipe Balbi * it under the terms of the GNU General Public License version 2 of 115945f789SFelipe Balbi * the License as published by the Free Software Foundation. 1272246da4SFelipe Balbi * 135945f789SFelipe Balbi * This program is distributed in the hope that it will be useful, 145945f789SFelipe Balbi * but WITHOUT ANY WARRANTY; without even the implied warranty of 155945f789SFelipe Balbi * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 165945f789SFelipe Balbi * GNU General Public License for more details. 1772246da4SFelipe Balbi */ 1872246da4SFelipe Balbi 1972246da4SFelipe Balbi #include <linux/kernel.h> 2046a57283SStephen Rothwell #include <linux/module.h> 2172246da4SFelipe Balbi #include <linux/slab.h> 2272246da4SFelipe Balbi #include <linux/pci.h> 23*e9af9229SFelipe Balbi #include <linux/pm_runtime.h> 2472246da4SFelipe Balbi #include <linux/platform_device.h> 25a89d977cSHeikki Krogerus #include <linux/gpio/consumer.h> 26a89d977cSHeikki Krogerus #include <linux/acpi.h> 2772246da4SFelipe Balbi 288f317b47SHuang Rui #include "platform_data.h" 298f317b47SHuang Rui 3072246da4SFelipe Balbi #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd 3141adc59cSJohn Youn #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce 32e8095a25SJohn Youn #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf 33b62cd96dSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 3485601f8cSDavid Cohen #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e 359a5a0783SJohn Youn #define PCI_DEVICE_ID_INTEL_BSW 0x22b7 3684a2b61bSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 3784a2b61bSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 38b4c580a4SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BXT 0x0aaa 391ffb4d5cSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa 40b4c580a4SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_APL 0x5aaa 4172246da4SFelipe Balbi 42a89d977cSHeikki Krogerus static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; 43a89d977cSHeikki Krogerus static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; 44a89d977cSHeikki Krogerus 45a89d977cSHeikki Krogerus static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { 46a89d977cSHeikki Krogerus { "reset-gpios", &reset_gpios, 1 }, 47a89d977cSHeikki Krogerus { "cs-gpios", &cs_gpios, 1 }, 48a89d977cSHeikki Krogerus { }, 49a89d977cSHeikki Krogerus }; 50a89d977cSHeikki Krogerus 51ce046d32SHeikki Krogerus static int dwc3_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc3) 522cd9ddf7SHeikki Krogerus { 532cd9ddf7SHeikki Krogerus if (pdev->vendor == PCI_VENDOR_ID_AMD && 542cd9ddf7SHeikki Krogerus pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { 552cd9ddf7SHeikki Krogerus struct dwc3_platform_data pdata; 562cd9ddf7SHeikki Krogerus 572cd9ddf7SHeikki Krogerus memset(&pdata, 0, sizeof(pdata)); 582cd9ddf7SHeikki Krogerus 592cd9ddf7SHeikki Krogerus pdata.has_lpm_erratum = true; 602cd9ddf7SHeikki Krogerus pdata.lpm_nyet_threshold = 0xf; 612cd9ddf7SHeikki Krogerus 622cd9ddf7SHeikki Krogerus pdata.u2exit_lfps_quirk = true; 632cd9ddf7SHeikki Krogerus pdata.u2ss_inp3_quirk = true; 642cd9ddf7SHeikki Krogerus pdata.req_p1p2p3_quirk = true; 652cd9ddf7SHeikki Krogerus pdata.del_p1p2p3_quirk = true; 662cd9ddf7SHeikki Krogerus pdata.del_phy_power_chg_quirk = true; 672cd9ddf7SHeikki Krogerus pdata.lfps_filter_quirk = true; 682cd9ddf7SHeikki Krogerus pdata.rx_detect_poll_quirk = true; 692cd9ddf7SHeikki Krogerus 702cd9ddf7SHeikki Krogerus pdata.tx_de_emphasis_quirk = true; 712cd9ddf7SHeikki Krogerus pdata.tx_de_emphasis = 1; 722cd9ddf7SHeikki Krogerus 732cd9ddf7SHeikki Krogerus /* 742cd9ddf7SHeikki Krogerus * FIXME these quirks should be removed when AMD NL 752cd9ddf7SHeikki Krogerus * taps out 762cd9ddf7SHeikki Krogerus */ 772cd9ddf7SHeikki Krogerus pdata.disable_scramble_quirk = true; 782cd9ddf7SHeikki Krogerus pdata.dis_u3_susphy_quirk = true; 792cd9ddf7SHeikki Krogerus pdata.dis_u2_susphy_quirk = true; 802cd9ddf7SHeikki Krogerus 81ce046d32SHeikki Krogerus return platform_device_add_data(dwc3, &pdata, sizeof(pdata)); 822cd9ddf7SHeikki Krogerus } 832cd9ddf7SHeikki Krogerus 84a89d977cSHeikki Krogerus if (pdev->vendor == PCI_VENDOR_ID_INTEL && 85a89d977cSHeikki Krogerus pdev->device == PCI_DEVICE_ID_INTEL_BYT) { 86a89d977cSHeikki Krogerus struct gpio_desc *gpio; 87a89d977cSHeikki Krogerus 88a89d977cSHeikki Krogerus acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev), 89a89d977cSHeikki Krogerus acpi_dwc3_byt_gpios); 90a89d977cSHeikki Krogerus 912df033caSUwe Kleine-König /* 922df033caSUwe Kleine-König * These GPIOs will turn on the USB2 PHY. Note that we have to 932df033caSUwe Kleine-König * put the gpio descriptors again here because the phy driver 942df033caSUwe Kleine-König * might want to grab them, too. 952df033caSUwe Kleine-König */ 962df033caSUwe Kleine-König gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); 972df033caSUwe Kleine-König if (IS_ERR(gpio)) 982df033caSUwe Kleine-König return PTR_ERR(gpio); 992df033caSUwe Kleine-König 100a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 101a89d977cSHeikki Krogerus gpiod_put(gpio); 102a89d977cSHeikki Krogerus 1032df033caSUwe Kleine-König gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); 1042df033caSUwe Kleine-König if (IS_ERR(gpio)) 1052df033caSUwe Kleine-König return PTR_ERR(gpio); 1062df033caSUwe Kleine-König 1072df033caSUwe Kleine-König if (gpio) { 108a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 109a89d977cSHeikki Krogerus gpiod_put(gpio); 110a89d977cSHeikki Krogerus usleep_range(10000, 11000); 111a89d977cSHeikki Krogerus } 112a89d977cSHeikki Krogerus } 113a89d977cSHeikki Krogerus 114bb7f3d6dSJohn Youn if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && 115bb7f3d6dSJohn Youn (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || 116bb7f3d6dSJohn Youn pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || 117bb7f3d6dSJohn Youn pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { 118bb7f3d6dSJohn Youn 119bb7f3d6dSJohn Youn struct dwc3_platform_data pdata; 120bb7f3d6dSJohn Youn 121bb7f3d6dSJohn Youn memset(&pdata, 0, sizeof(pdata)); 122bb7f3d6dSJohn Youn pdata.usb3_lpm_capable = true; 123bb7f3d6dSJohn Youn pdata.has_lpm_erratum = true; 12494218ee3SJohn Youn pdata.dis_enblslpm_quirk = true; 125bb7f3d6dSJohn Youn 126ce046d32SHeikki Krogerus return platform_device_add_data(dwc3, &pdata, sizeof(pdata)); 127bb7f3d6dSJohn Youn } 128bb7f3d6dSJohn Youn 1292cd9ddf7SHeikki Krogerus return 0; 1302cd9ddf7SHeikki Krogerus } 13172246da4SFelipe Balbi 13241ac7b3aSBill Pemberton static int dwc3_pci_probe(struct pci_dev *pci, 13372246da4SFelipe Balbi const struct pci_device_id *id) 13472246da4SFelipe Balbi { 13572246da4SFelipe Balbi struct resource res[2]; 13672246da4SFelipe Balbi struct platform_device *dwc3; 137b09e99eeSAndy Shevchenko int ret; 138802ca850SChanho Park struct device *dev = &pci->dev; 13972246da4SFelipe Balbi 140f1c7e710SAndy Shevchenko ret = pcim_enable_device(pci); 14172246da4SFelipe Balbi if (ret) { 142802ca850SChanho Park dev_err(dev, "failed to enable pci device\n"); 143802ca850SChanho Park return -ENODEV; 14472246da4SFelipe Balbi } 14572246da4SFelipe Balbi 14672246da4SFelipe Balbi pci_set_master(pci); 14772246da4SFelipe Balbi 148124dafdeSSebastian Andrzej Siewior dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); 14972246da4SFelipe Balbi if (!dwc3) { 150802ca850SChanho Park dev_err(dev, "couldn't allocate dwc3 device\n"); 151f1c7e710SAndy Shevchenko return -ENOMEM; 15272246da4SFelipe Balbi } 15372246da4SFelipe Balbi 15472246da4SFelipe Balbi memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); 15572246da4SFelipe Balbi 15672246da4SFelipe Balbi res[0].start = pci_resource_start(pci, 0); 15772246da4SFelipe Balbi res[0].end = pci_resource_end(pci, 0); 15872246da4SFelipe Balbi res[0].name = "dwc_usb3"; 15972246da4SFelipe Balbi res[0].flags = IORESOURCE_MEM; 16072246da4SFelipe Balbi 16172246da4SFelipe Balbi res[1].start = pci->irq; 16272246da4SFelipe Balbi res[1].name = "dwc_usb3"; 16372246da4SFelipe Balbi res[1].flags = IORESOURCE_IRQ; 16472246da4SFelipe Balbi 16572246da4SFelipe Balbi ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); 16672246da4SFelipe Balbi if (ret) { 167802ca850SChanho Park dev_err(dev, "couldn't add resources to dwc3 device\n"); 168f1c7e710SAndy Shevchenko return ret; 16972246da4SFelipe Balbi } 17072246da4SFelipe Balbi 171802ca850SChanho Park dwc3->dev.parent = dev; 1729caeb06eSHeikki Krogerus ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev)); 17372246da4SFelipe Balbi 174ce046d32SHeikki Krogerus ret = dwc3_pci_quirks(pci, dwc3); 175474799f0SHeikki Krogerus if (ret) 176474799f0SHeikki Krogerus goto err; 177474799f0SHeikki Krogerus 17872246da4SFelipe Balbi ret = platform_device_add(dwc3); 17972246da4SFelipe Balbi if (ret) { 180802ca850SChanho Park dev_err(dev, "failed to register dwc3 device\n"); 1812cd9ddf7SHeikki Krogerus goto err; 18272246da4SFelipe Balbi } 18372246da4SFelipe Balbi 184*e9af9229SFelipe Balbi device_init_wakeup(dev, true); 185*e9af9229SFelipe Balbi device_set_run_wake(dev, true); 186ce046d32SHeikki Krogerus pci_set_drvdata(pci, dwc3); 187*e9af9229SFelipe Balbi pm_runtime_put(dev); 188*e9af9229SFelipe Balbi 18972246da4SFelipe Balbi return 0; 1902cd9ddf7SHeikki Krogerus err: 19172246da4SFelipe Balbi platform_device_put(dwc3); 19272246da4SFelipe Balbi return ret; 19372246da4SFelipe Balbi } 19472246da4SFelipe Balbi 195fb4e98abSBill Pemberton static void dwc3_pci_remove(struct pci_dev *pci) 19672246da4SFelipe Balbi { 197*e9af9229SFelipe Balbi device_init_wakeup(&pci->dev, false); 198*e9af9229SFelipe Balbi pm_runtime_get(&pci->dev); 199a89d977cSHeikki Krogerus acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev)); 2002cd9ddf7SHeikki Krogerus platform_device_unregister(pci_get_drvdata(pci)); 20172246da4SFelipe Balbi } 20272246da4SFelipe Balbi 203782df20cSJingoo Han static const struct pci_device_id dwc3_pci_id_table[] = { 20472246da4SFelipe Balbi { 20572246da4SFelipe Balbi PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 20672246da4SFelipe Balbi PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), 20772246da4SFelipe Balbi }, 20841adc59cSJohn Youn { 20941adc59cSJohn Youn PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 21041adc59cSJohn Youn PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI), 21141adc59cSJohn Youn }, 212e8095a25SJohn Youn { 213e8095a25SJohn Youn PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 214e8095a25SJohn Youn PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31), 215e8095a25SJohn Youn }, 2167d643664SAlan Cox { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, 217b62cd96dSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, 21885601f8cSDavid Cohen { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, 21984a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, 22084a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, 221b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), }, 2221ffb4d5cSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), }, 223b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, 2249755449dSHuang Rui { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, 22572246da4SFelipe Balbi { } /* Terminating Entry */ 22672246da4SFelipe Balbi }; 22772246da4SFelipe Balbi MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 22872246da4SFelipe Balbi 229*e9af9229SFelipe Balbi #ifdef CONFIG_PM 230*e9af9229SFelipe Balbi static int dwc3_pci_runtime_suspend(struct device *dev) 231*e9af9229SFelipe Balbi { 232*e9af9229SFelipe Balbi if (device_run_wake(dev)) 233*e9af9229SFelipe Balbi return 0; 234*e9af9229SFelipe Balbi 235*e9af9229SFelipe Balbi return -EBUSY; 236*e9af9229SFelipe Balbi } 237*e9af9229SFelipe Balbi 238*e9af9229SFelipe Balbi static int dwc3_pci_pm_dummy(struct device *dev) 239*e9af9229SFelipe Balbi { 240*e9af9229SFelipe Balbi /* 241*e9af9229SFelipe Balbi * There's nothing to do here. No, seriously. Everything is either taken 242*e9af9229SFelipe Balbi * care either by PCI subsystem or dwc3/core.c, so we have nothing 243*e9af9229SFelipe Balbi * missing here. 244*e9af9229SFelipe Balbi * 245*e9af9229SFelipe Balbi * So you'd think we didn't need this at all, but PCI subsystem will 246*e9af9229SFelipe Balbi * bail out if we don't have a valid callback :-s 247*e9af9229SFelipe Balbi */ 248*e9af9229SFelipe Balbi return 0; 249*e9af9229SFelipe Balbi } 250*e9af9229SFelipe Balbi #endif /* CONFIG_PM */ 251*e9af9229SFelipe Balbi 252*e9af9229SFelipe Balbi static struct dev_pm_ops dwc3_pci_dev_pm_ops = { 253*e9af9229SFelipe Balbi SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_pm_dummy, dwc3_pci_pm_dummy) 254*e9af9229SFelipe Balbi SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_pm_dummy, 255*e9af9229SFelipe Balbi NULL) 256*e9af9229SFelipe Balbi }; 257*e9af9229SFelipe Balbi 25872246da4SFelipe Balbi static struct pci_driver dwc3_pci_driver = { 2590949e99bSFelipe Balbi .name = "dwc3-pci", 26072246da4SFelipe Balbi .id_table = dwc3_pci_id_table, 26172246da4SFelipe Balbi .probe = dwc3_pci_probe, 2627690417dSBill Pemberton .remove = dwc3_pci_remove, 263*e9af9229SFelipe Balbi .driver = { 264*e9af9229SFelipe Balbi .pm = &dwc3_pci_dev_pm_ops, 265*e9af9229SFelipe Balbi } 26672246da4SFelipe Balbi }; 26772246da4SFelipe Balbi 26872246da4SFelipe Balbi MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 2695945f789SFelipe Balbi MODULE_LICENSE("GPL v2"); 27072246da4SFelipe Balbi MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 27172246da4SFelipe Balbi 27295656336SGreg Kroah-Hartman module_pci_driver(dwc3_pci_driver); 273