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178 lines
4.9 KiB
178 lines
4.9 KiB
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) |
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/* |
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* pci.c - DesignWare HS OTG Controller PCI driver |
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* |
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* Copyright (C) 2004-2013 Synopsys, Inc. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions, and the following disclaimer, |
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* without modification. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The names of the above-listed copyright holders may not be used |
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* to endorse or promote products derived from this software without |
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* specific prior written permission. |
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* |
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* ALTERNATIVELY, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL") as published by the Free Software |
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* Foundation; either version 2 of the License, or (at your option) any |
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* later version. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* Provides the initialization and cleanup entry points for the DWC_otg PCI |
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* driver |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/spinlock.h> |
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#include <linux/interrupt.h> |
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#include <linux/io.h> |
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#include <linux/slab.h> |
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#include <linux/pci.h> |
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#include <linux/usb.h> |
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#include <linux/usb/hcd.h> |
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#include <linux/usb/ch11.h> |
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#include <linux/platform_device.h> |
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#include <linux/usb/usb_phy_generic.h> |
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#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0 |
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static const char dwc2_driver_name[] = "dwc2-pci"; |
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struct dwc2_pci_glue { |
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struct platform_device *dwc2; |
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struct platform_device *phy; |
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}; |
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/** |
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* dwc2_pci_remove() - Provides the cleanup entry points for the DWC_otg PCI |
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* driver |
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* |
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* @pci: The programming view of DWC_otg PCI |
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*/ |
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static void dwc2_pci_remove(struct pci_dev *pci) |
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{ |
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struct dwc2_pci_glue *glue = pci_get_drvdata(pci); |
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platform_device_unregister(glue->dwc2); |
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usb_phy_generic_unregister(glue->phy); |
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pci_set_drvdata(pci, NULL); |
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} |
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static int dwc2_pci_probe(struct pci_dev *pci, |
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const struct pci_device_id *id) |
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{ |
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struct resource res[2]; |
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struct platform_device *dwc2; |
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struct platform_device *phy; |
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int ret; |
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struct device *dev = &pci->dev; |
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struct dwc2_pci_glue *glue; |
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ret = pcim_enable_device(pci); |
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if (ret) { |
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dev_err(dev, "failed to enable pci device\n"); |
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return -ENODEV; |
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} |
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pci_set_master(pci); |
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phy = usb_phy_generic_register(); |
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if (IS_ERR(phy)) { |
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dev_err(dev, "error registering generic PHY (%ld)\n", |
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PTR_ERR(phy)); |
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return PTR_ERR(phy); |
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} |
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dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO); |
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if (!dwc2) { |
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dev_err(dev, "couldn't allocate dwc2 device\n"); |
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ret = -ENOMEM; |
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goto err; |
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} |
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memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res)); |
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res[0].start = pci_resource_start(pci, 0); |
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res[0].end = pci_resource_end(pci, 0); |
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res[0].name = "dwc2"; |
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res[0].flags = IORESOURCE_MEM; |
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res[1].start = pci->irq; |
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res[1].name = "dwc2"; |
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res[1].flags = IORESOURCE_IRQ; |
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ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res)); |
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if (ret) { |
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dev_err(dev, "couldn't add resources to dwc2 device\n"); |
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goto err; |
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} |
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dwc2->dev.parent = dev; |
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glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL); |
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if (!glue) { |
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ret = -ENOMEM; |
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goto err; |
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} |
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ret = platform_device_add(dwc2); |
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if (ret) { |
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dev_err(dev, "failed to register dwc2 device\n"); |
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goto err; |
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} |
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glue->phy = phy; |
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glue->dwc2 = dwc2; |
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pci_set_drvdata(pci, glue); |
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return 0; |
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err: |
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usb_phy_generic_unregister(phy); |
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platform_device_put(dwc2); |
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return ret; |
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} |
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static const struct pci_device_id dwc2_pci_ids[] = { |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG), |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_STMICRO, |
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PCI_DEVICE_ID_STMICRO_USB_OTG), |
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}, |
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{ /* end: all zeroes */ } |
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}; |
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MODULE_DEVICE_TABLE(pci, dwc2_pci_ids); |
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static struct pci_driver dwc2_pci_driver = { |
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.name = dwc2_driver_name, |
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.id_table = dwc2_pci_ids, |
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.probe = dwc2_pci_probe, |
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.remove = dwc2_pci_remove, |
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}; |
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module_pci_driver(dwc2_pci_driver); |
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MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue"); |
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MODULE_AUTHOR("Synopsys, Inc."); |
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MODULE_LICENSE("Dual BSD/GPL");
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