/** * dwc3-pci.c - PCI Specific glue layer * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com * * Authors: Felipe Balbi , * Sebastian Andrzej Siewior * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the above-listed copyright holders may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2, as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include /* FIXME define these in */ #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd 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 nop_usb_xceiv_platform_data pdata; struct platform_device *pdev; int ret; memset(&pdata, 0x00, sizeof(pdata)); pdev = platform_device_alloc("nop_usb_xceiv", 0); if (!pdev) return -ENOMEM; glue->usb2_phy = pdev; pdata.type = USB_PHY_TYPE_USB2; ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata)); if (ret) goto err1; pdev = platform_device_alloc("nop_usb_xceiv", 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 = -ENOMEM; struct device *dev = &pci->dev; glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(dev, "not enough memory\n"); return -ENOMEM; } glue->dev = dev; ret = pci_enable_device(pci); if (ret) { dev_err(dev, "failed to enable pci device\n"); return -ENODEV; } pci_set_power_state(pci, PCI_D0); 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"); ret = -ENOMEM; goto err1; } 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; ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc3 device\n"); goto err1; } pci_set_drvdata(pci, glue); 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: pci_set_drvdata(pci, NULL); platform_device_put(dwc3); err1: pci_disable_device(pci); 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); pci_set_drvdata(pci, NULL); pci_disable_device(pci); } static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), }, { } /* Terminating Entry */ }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); #ifdef CONFIG_PM 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; } static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) }; #define DEV_PM_OPS (&dwc3_pci_dev_pm_ops) #else #define DEV_PM_OPS NULL #endif /* CONFIG_PM */ 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 = DEV_PM_OPS, }, }; MODULE_AUTHOR("Felipe Balbi "); MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); module_pci_driver(dwc3_pci_driver);