/** * dwc3-pci.c - PCI Specific glue layer * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com * * Authors: Felipe Balbi , * Sebastian Andrzej Siewior * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 of * the License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include "platform_data.h" /* FIXME define these in */ #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 #define PCI_DEVICE_ID_INTEL_MRFLD 0x119e #define PCI_DEVICE_ID_INTEL_BSW 0x22B7 #define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30 #define PCI_DEVICE_ID_INTEL_SPTH 0xa130 struct dwc3_pci { struct device *dev; struct platform_device *dwc3; struct platform_device *usb2_phy; struct platform_device *usb3_phy; }; static int dwc3_pci_register_phys(struct dwc3_pci *glue) { struct usb_phy_generic_platform_data pdata; struct platform_device *pdev; int ret; memset(&pdata, 0x00, sizeof(pdata)); pdev = platform_device_alloc("usb_phy_generic", 0); if (!pdev) return -ENOMEM; glue->usb2_phy = pdev; pdata.type = USB_PHY_TYPE_USB2; pdata.gpio_reset = -1; ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata)); if (ret) goto err1; pdev = platform_device_alloc("usb_phy_generic", 1); if (!pdev) { ret = -ENOMEM; goto err1; } glue->usb3_phy = pdev; pdata.type = USB_PHY_TYPE_USB3; ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata)); if (ret) goto err2; ret = platform_device_add(glue->usb2_phy); if (ret) goto err2; ret = platform_device_add(glue->usb3_phy); if (ret) goto err3; return 0; err3: platform_device_del(glue->usb2_phy); err2: platform_device_put(glue->usb3_phy); err1: platform_device_put(glue->usb2_phy); return ret; } static int dwc3_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) { struct resource res[2]; struct platform_device *dwc3; struct dwc3_pci *glue; int ret; struct device *dev = &pci->dev; struct dwc3_platform_data dwc3_pdata; memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata)); glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); if (!glue) return -ENOMEM; glue->dev = dev; ret = pcim_enable_device(pci); if (ret) { dev_err(dev, "failed to enable pci device\n"); return -ENODEV; } pci_set_master(pci); ret = dwc3_pci_register_phys(glue); if (ret) { dev_err(dev, "couldn't register PHYs\n"); return ret; } dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); if (!dwc3) { dev_err(dev, "couldn't allocate dwc3 device\n"); return -ENOMEM; } memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); res[0].start = pci_resource_start(pci, 0); res[0].end = pci_resource_end(pci, 0); res[0].name = "dwc_usb3"; res[0].flags = IORESOURCE_MEM; res[1].start = pci->irq; res[1].name = "dwc_usb3"; res[1].flags = IORESOURCE_IRQ; if (pci->vendor == PCI_VENDOR_ID_AMD && pci->device == PCI_DEVICE_ID_AMD_NL_USB) { dwc3_pdata.has_lpm_erratum = true; dwc3_pdata.lpm_nyet_threshold = 0xf; dwc3_pdata.u2exit_lfps_quirk = true; dwc3_pdata.u2ss_inp3_quirk = true; dwc3_pdata.req_p1p2p3_quirk = true; dwc3_pdata.del_p1p2p3_quirk = true; dwc3_pdata.del_phy_power_chg_quirk = true; dwc3_pdata.lfps_filter_quirk = true; dwc3_pdata.rx_detect_poll_quirk = true; dwc3_pdata.tx_de_emphasis_quirk = true; dwc3_pdata.tx_de_emphasis = 1; /* * FIXME these quirks should be removed when AMD NL * taps out */ dwc3_pdata.disable_scramble_quirk = true; dwc3_pdata.dis_u3_susphy_quirk = true; dwc3_pdata.dis_u2_susphy_quirk = true; } ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc3 device\n"); return ret; } pci_set_drvdata(pci, glue); ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata)); if (ret) goto err3; dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); dwc3->dev.dma_mask = dev->dma_mask; dwc3->dev.dma_parms = dev->dma_parms; dwc3->dev.parent = dev; glue->dwc3 = dwc3; ret = platform_device_add(dwc3); if (ret) { dev_err(dev, "failed to register dwc3 device\n"); goto err3; } return 0; err3: platform_device_put(dwc3); return ret; } static void dwc3_pci_remove(struct pci_dev *pci) { struct dwc3_pci *glue = pci_get_drvdata(pci); platform_device_unregister(glue->dwc3); platform_device_unregister(glue->usb2_phy); platform_device_unregister(glue->usb3_phy); } static const struct pci_device_id dwc3_pci_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), }, { } /* Terminating Entry */ }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); #ifdef CONFIG_PM_SLEEP static int dwc3_pci_suspend(struct device *dev) { struct pci_dev *pci = to_pci_dev(dev); pci_disable_device(pci); return 0; } static int dwc3_pci_resume(struct device *dev) { struct pci_dev *pci = to_pci_dev(dev); int ret; ret = pci_enable_device(pci); if (ret) { dev_err(dev, "can't re-enable device --> %d\n", ret); return ret; } pci_set_master(pci); return 0; } #endif /* CONFIG_PM_SLEEP */ static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) }; static struct pci_driver dwc3_pci_driver = { .name = "dwc3-pci", .id_table = dwc3_pci_id_table, .probe = dwc3_pci_probe, .remove = dwc3_pci_remove, .driver = { .pm = &dwc3_pci_dev_pm_ops, }, }; MODULE_AUTHOR("Felipe Balbi "); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); module_pci_driver(dwc3_pci_driver);