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> 2372246da4SFelipe Balbi #include <linux/platform_device.h> 24a89d977cSHeikki Krogerus #include <linux/gpio/consumer.h> 25a89d977cSHeikki Krogerus #include <linux/acpi.h> 2672246da4SFelipe Balbi 278f317b47SHuang Rui #include "platform_data.h" 288f317b47SHuang Rui 2972246da4SFelipe Balbi #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd 3041adc59cSJohn Youn #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce 31e8095a25SJohn Youn #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf 32b62cd96dSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 3385601f8cSDavid Cohen #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e 349a5a0783SJohn Youn #define PCI_DEVICE_ID_INTEL_BSW 0x22b7 3584a2b61bSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 3684a2b61bSHeikki Krogerus #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 37*b4c580a4SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_BXT 0x0aaa 38*b4c580a4SHeikki Krogerus #define PCI_DEVICE_ID_INTEL_APL 0x5aaa 3972246da4SFelipe Balbi 40a89d977cSHeikki Krogerus static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; 41a89d977cSHeikki Krogerus static const struct acpi_gpio_params cs_gpios = { 1, 0, false }; 42a89d977cSHeikki Krogerus 43a89d977cSHeikki Krogerus static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = { 44a89d977cSHeikki Krogerus { "reset-gpios", &reset_gpios, 1 }, 45a89d977cSHeikki Krogerus { "cs-gpios", &cs_gpios, 1 }, 46a89d977cSHeikki Krogerus { }, 47a89d977cSHeikki Krogerus }; 48a89d977cSHeikki Krogerus 492cd9ddf7SHeikki Krogerus static int dwc3_pci_quirks(struct pci_dev *pdev) 502cd9ddf7SHeikki Krogerus { 512cd9ddf7SHeikki Krogerus if (pdev->vendor == PCI_VENDOR_ID_AMD && 522cd9ddf7SHeikki Krogerus pdev->device == PCI_DEVICE_ID_AMD_NL_USB) { 532cd9ddf7SHeikki Krogerus struct dwc3_platform_data pdata; 542cd9ddf7SHeikki Krogerus 552cd9ddf7SHeikki Krogerus memset(&pdata, 0, sizeof(pdata)); 562cd9ddf7SHeikki Krogerus 572cd9ddf7SHeikki Krogerus pdata.has_lpm_erratum = true; 582cd9ddf7SHeikki Krogerus pdata.lpm_nyet_threshold = 0xf; 592cd9ddf7SHeikki Krogerus 602cd9ddf7SHeikki Krogerus pdata.u2exit_lfps_quirk = true; 612cd9ddf7SHeikki Krogerus pdata.u2ss_inp3_quirk = true; 622cd9ddf7SHeikki Krogerus pdata.req_p1p2p3_quirk = true; 632cd9ddf7SHeikki Krogerus pdata.del_p1p2p3_quirk = true; 642cd9ddf7SHeikki Krogerus pdata.del_phy_power_chg_quirk = true; 652cd9ddf7SHeikki Krogerus pdata.lfps_filter_quirk = true; 662cd9ddf7SHeikki Krogerus pdata.rx_detect_poll_quirk = true; 672cd9ddf7SHeikki Krogerus 682cd9ddf7SHeikki Krogerus pdata.tx_de_emphasis_quirk = true; 692cd9ddf7SHeikki Krogerus pdata.tx_de_emphasis = 1; 702cd9ddf7SHeikki Krogerus 712cd9ddf7SHeikki Krogerus /* 722cd9ddf7SHeikki Krogerus * FIXME these quirks should be removed when AMD NL 732cd9ddf7SHeikki Krogerus * taps out 742cd9ddf7SHeikki Krogerus */ 752cd9ddf7SHeikki Krogerus pdata.disable_scramble_quirk = true; 762cd9ddf7SHeikki Krogerus pdata.dis_u3_susphy_quirk = true; 772cd9ddf7SHeikki Krogerus pdata.dis_u2_susphy_quirk = true; 782cd9ddf7SHeikki Krogerus 792cd9ddf7SHeikki Krogerus return platform_device_add_data(pci_get_drvdata(pdev), &pdata, 802cd9ddf7SHeikki Krogerus sizeof(pdata)); 812cd9ddf7SHeikki Krogerus } 822cd9ddf7SHeikki Krogerus 83a89d977cSHeikki Krogerus if (pdev->vendor == PCI_VENDOR_ID_INTEL && 84a89d977cSHeikki Krogerus pdev->device == PCI_DEVICE_ID_INTEL_BYT) { 85a89d977cSHeikki Krogerus struct gpio_desc *gpio; 86a89d977cSHeikki Krogerus 87a89d977cSHeikki Krogerus acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev), 88a89d977cSHeikki Krogerus acpi_dwc3_byt_gpios); 89a89d977cSHeikki Krogerus 902df033caSUwe Kleine-König /* 912df033caSUwe Kleine-König * These GPIOs will turn on the USB2 PHY. Note that we have to 922df033caSUwe Kleine-König * put the gpio descriptors again here because the phy driver 932df033caSUwe Kleine-König * might want to grab them, too. 942df033caSUwe Kleine-König */ 952df033caSUwe Kleine-König gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW); 962df033caSUwe Kleine-König if (IS_ERR(gpio)) 972df033caSUwe Kleine-König return PTR_ERR(gpio); 982df033caSUwe Kleine-König 99a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 100a89d977cSHeikki Krogerus gpiod_put(gpio); 101a89d977cSHeikki Krogerus 1022df033caSUwe Kleine-König gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); 1032df033caSUwe Kleine-König if (IS_ERR(gpio)) 1042df033caSUwe Kleine-König return PTR_ERR(gpio); 1052df033caSUwe Kleine-König 1062df033caSUwe Kleine-König if (gpio) { 107a89d977cSHeikki Krogerus gpiod_set_value_cansleep(gpio, 1); 108a89d977cSHeikki Krogerus gpiod_put(gpio); 109a89d977cSHeikki Krogerus usleep_range(10000, 11000); 110a89d977cSHeikki Krogerus } 111a89d977cSHeikki Krogerus } 112a89d977cSHeikki Krogerus 113bb7f3d6dSJohn Youn if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && 114bb7f3d6dSJohn Youn (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 || 115bb7f3d6dSJohn Youn pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI || 116bb7f3d6dSJohn Youn pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) { 117bb7f3d6dSJohn Youn 118bb7f3d6dSJohn Youn struct dwc3_platform_data pdata; 119bb7f3d6dSJohn Youn 120bb7f3d6dSJohn Youn memset(&pdata, 0, sizeof(pdata)); 121bb7f3d6dSJohn Youn pdata.usb3_lpm_capable = true; 122bb7f3d6dSJohn Youn pdata.has_lpm_erratum = true; 12394218ee3SJohn Youn pdata.dis_enblslpm_quirk = true; 124bb7f3d6dSJohn Youn 125bb7f3d6dSJohn Youn return platform_device_add_data(pci_get_drvdata(pdev), &pdata, 126bb7f3d6dSJohn Youn 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 1712cd9ddf7SHeikki Krogerus pci_set_drvdata(pci, dwc3); 1722cd9ddf7SHeikki Krogerus ret = dwc3_pci_quirks(pci); 1738f317b47SHuang Rui if (ret) 1742cd9ddf7SHeikki Krogerus goto err; 1758f317b47SHuang Rui 176802ca850SChanho Park dwc3->dev.parent = dev; 1779caeb06eSHeikki Krogerus ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev)); 17872246da4SFelipe Balbi 17972246da4SFelipe Balbi ret = platform_device_add(dwc3); 18072246da4SFelipe Balbi if (ret) { 181802ca850SChanho Park dev_err(dev, "failed to register dwc3 device\n"); 1822cd9ddf7SHeikki Krogerus goto err; 18372246da4SFelipe Balbi } 18472246da4SFelipe Balbi 18572246da4SFelipe Balbi return 0; 1862cd9ddf7SHeikki Krogerus err: 18772246da4SFelipe Balbi platform_device_put(dwc3); 18872246da4SFelipe Balbi return ret; 18972246da4SFelipe Balbi } 19072246da4SFelipe Balbi 191fb4e98abSBill Pemberton static void dwc3_pci_remove(struct pci_dev *pci) 19272246da4SFelipe Balbi { 193a89d977cSHeikki Krogerus acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev)); 1942cd9ddf7SHeikki Krogerus platform_device_unregister(pci_get_drvdata(pci)); 19572246da4SFelipe Balbi } 19672246da4SFelipe Balbi 197782df20cSJingoo Han static const struct pci_device_id dwc3_pci_id_table[] = { 19872246da4SFelipe Balbi { 19972246da4SFelipe Balbi PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 20072246da4SFelipe Balbi PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), 20172246da4SFelipe Balbi }, 20241adc59cSJohn Youn { 20341adc59cSJohn Youn PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 20441adc59cSJohn Youn PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI), 20541adc59cSJohn Youn }, 206e8095a25SJohn Youn { 207e8095a25SJohn Youn PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, 208e8095a25SJohn Youn PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31), 209e8095a25SJohn Youn }, 2107d643664SAlan Cox { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, 211b62cd96dSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, 21285601f8cSDavid Cohen { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, 21384a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, 21484a2b61bSHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, 215*b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), }, 216*b4c580a4SHeikki Krogerus { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), }, 2179755449dSHuang Rui { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, 21872246da4SFelipe Balbi { } /* Terminating Entry */ 21972246da4SFelipe Balbi }; 22072246da4SFelipe Balbi MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); 22172246da4SFelipe Balbi 22272246da4SFelipe Balbi static struct pci_driver dwc3_pci_driver = { 2230949e99bSFelipe Balbi .name = "dwc3-pci", 22472246da4SFelipe Balbi .id_table = dwc3_pci_id_table, 22572246da4SFelipe Balbi .probe = dwc3_pci_probe, 2267690417dSBill Pemberton .remove = dwc3_pci_remove, 22772246da4SFelipe Balbi }; 22872246da4SFelipe Balbi 22972246da4SFelipe Balbi MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 2305945f789SFelipe Balbi MODULE_LICENSE("GPL v2"); 23172246da4SFelipe Balbi MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); 23272246da4SFelipe Balbi 23395656336SGreg Kroah-Hartman module_pci_driver(dwc3_pci_driver); 234