/* * pci.c - DesignWare HS OTG Controller PCI driver * * Copyright (C) 2004-2013 Synopsys, Inc. * * 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") as published by the Free Software * Foundation; either version 2 of the License, or (at your option) any * later version. * * 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. */ /* * Provides the initialization and cleanup entry points for the DWC_otg PCI * driver */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/ch11.h> #include <linux/platform_device.h> #include <linux/usb/usb_phy_generic.h> #define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0 static const char dwc2_driver_name[] = "dwc2-pci"; struct dwc2_pci_glue { struct platform_device *dwc2; struct platform_device *phy; }; static int dwc2_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc2) { if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS && pdev->device == PCI_PRODUCT_ID_HAPS_HSOTG) { struct property_entry properties[] = { { }, }; return platform_device_add_properties(dwc2, properties); } return 0; } static void dwc2_pci_remove(struct pci_dev *pci) { struct dwc2_pci_glue *glue = pci_get_drvdata(pci); platform_device_unregister(glue->dwc2); usb_phy_generic_unregister(glue->phy); kfree(glue); pci_set_drvdata(pci, NULL); } static int dwc2_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) { struct resource res[2]; struct platform_device *dwc2; struct platform_device *phy; int ret; struct device *dev = &pci->dev; struct dwc2_pci_glue *glue; ret = pcim_enable_device(pci); if (ret) { dev_err(dev, "failed to enable pci device\n"); return -ENODEV; } pci_set_master(pci); dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO); if (!dwc2) { dev_err(dev, "couldn't allocate dwc2 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 = "dwc2"; res[0].flags = IORESOURCE_MEM; res[1].start = pci->irq; res[1].name = "dwc2"; res[1].flags = IORESOURCE_IRQ; ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res)); if (ret) { dev_err(dev, "couldn't add resources to dwc2 device\n"); return ret; } dwc2->dev.parent = dev; phy = usb_phy_generic_register(); if (IS_ERR(phy)) { dev_err(dev, "error registering generic PHY (%ld)\n", PTR_ERR(phy)); return PTR_ERR(phy); } ret = dwc2_pci_quirks(pci, dwc2); if (ret) goto err; ret = platform_device_add(dwc2); if (ret) { dev_err(dev, "failed to register dwc2 device\n"); goto err; } glue = kzalloc(sizeof(*glue), GFP_KERNEL); if (!glue) return -ENOMEM; glue->phy = phy; glue->dwc2 = dwc2; pci_set_drvdata(pci, glue); return 0; err: usb_phy_generic_unregister(phy); platform_device_put(dwc2); return ret; } static const struct pci_device_id dwc2_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG), }, { PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_USB_OTG), }, { /* end: all zeroes */ } }; MODULE_DEVICE_TABLE(pci, dwc2_pci_ids); static struct pci_driver dwc2_pci_driver = { .name = dwc2_driver_name, .id_table = dwc2_pci_ids, .probe = dwc2_pci_probe, .remove = dwc2_pci_remove, }; module_pci_driver(dwc2_pci_driver); MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue"); MODULE_AUTHOR("Synopsys, Inc."); MODULE_LICENSE("Dual BSD/GPL");