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There are a few places in the kernel where PCI IDs for different Cadence USB controllers are being used. Besides different naming, they duplicate each other. Make this all in order by providing common definitions via PCI IDs database and use in all users. While doing that, rename definitions as Roger suggested. Suggested-by: Roger Quadros <rogerq@kernel.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20241112160125.2340972-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Cadence USBHS-DEV controller - PCI Glue driver.
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*
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* Copyright (C) 2023 Cadence.
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*
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* Author: Pawel Laszczak <pawell@cadence.com>
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*
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*/
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include "cdns2-gadget.h"
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#define PCI_DRIVER_NAME "cdns-pci-usbhs"
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#define PCI_BAR_DEV 0
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#define PCI_DEV_FN_DEVICE 0
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static int cdns2_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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resource_size_t rsrc_start, rsrc_len;
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struct device *dev = &pdev->dev;
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struct cdns2_device *priv_dev;
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struct resource *res;
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int ret;
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/* For GADGET PCI (devfn) function number is 0. */
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if (!id || pdev->devfn != PCI_DEV_FN_DEVICE ||
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pdev->class != PCI_CLASS_SERIAL_USB_DEVICE)
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return -EINVAL;
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ret = pcim_enable_device(pdev);
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if (ret) {
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dev_err(&pdev->dev, "Enabling PCI device has failed %d\n", ret);
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return ret;
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}
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pci_set_master(pdev);
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priv_dev = devm_kzalloc(&pdev->dev, sizeof(*priv_dev), GFP_KERNEL);
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if (!priv_dev)
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return -ENOMEM;
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dev_dbg(dev, "Initialize resources\n");
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rsrc_start = pci_resource_start(pdev, PCI_BAR_DEV);
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rsrc_len = pci_resource_len(pdev, PCI_BAR_DEV);
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res = devm_request_mem_region(dev, rsrc_start, rsrc_len, "dev");
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if (!res) {
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dev_dbg(dev, "controller already in use\n");
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return -EBUSY;
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}
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priv_dev->regs = devm_ioremap(dev, rsrc_start, rsrc_len);
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if (!priv_dev->regs) {
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dev_dbg(dev, "error mapping memory\n");
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return -EFAULT;
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}
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priv_dev->irq = pdev->irq;
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dev_dbg(dev, "USBSS-DEV physical base addr: %pa\n",
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&rsrc_start);
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priv_dev->dev = dev;
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priv_dev->eps_supported = 0x000f000f;
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priv_dev->onchip_tx_buf = 16;
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priv_dev->onchip_rx_buf = 16;
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ret = cdns2_gadget_init(priv_dev);
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if (ret)
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return ret;
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pci_set_drvdata(pdev, priv_dev);
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device_wakeup_enable(&pdev->dev);
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if (pci_dev_run_wake(pdev))
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pm_runtime_put_noidle(&pdev->dev);
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return 0;
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}
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static void cdns2_pci_remove(struct pci_dev *pdev)
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{
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struct cdns2_device *priv_dev = pci_get_drvdata(pdev);
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if (pci_dev_run_wake(pdev))
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pm_runtime_get_noresume(&pdev->dev);
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cdns2_gadget_remove(priv_dev);
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}
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static int cdns2_pci_suspend(struct device *dev)
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{
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struct cdns2_device *priv_dev = dev_get_drvdata(dev);
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return cdns2_gadget_suspend(priv_dev);
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}
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static int cdns2_pci_resume(struct device *dev)
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{
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struct cdns2_device *priv_dev = dev_get_drvdata(dev);
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return cdns2_gadget_resume(priv_dev, 1);
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}
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static const struct dev_pm_ops cdns2_pci_pm_ops = {
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SYSTEM_SLEEP_PM_OPS(cdns2_pci_suspend, cdns2_pci_resume)
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};
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static const struct pci_device_id cdns2_pci_ids[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_CDNS, PCI_DEVICE_ID_CDNS_USB),
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.class = PCI_CLASS_SERIAL_USB_DEVICE },
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{ 0, }
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};
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static struct pci_driver cdns2_pci_driver = {
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.name = "cdns2-pci",
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.id_table = cdns2_pci_ids,
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.probe = cdns2_pci_probe,
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.remove = cdns2_pci_remove,
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.driver = {
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.pm = pm_ptr(&cdns2_pci_pm_ops),
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}
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};
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module_pci_driver(cdns2_pci_driver);
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MODULE_DEVICE_TABLE(pci, cdns2_pci_ids);
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MODULE_ALIAS("pci:cdns2");
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MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Cadence CDNS2 PCI driver");
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