1 // SPDX-License-Identifier: GPL-2.0
3  * ci_hdrc_pci.c - MIPS USB IP core family device controller
5  * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
12 #include <linux/pci.h>
23 	struct platform_device	*phy;  member
27  * PCI block
46  * ci_hdrc_pci_probe: PCI probe
48  * @id:   PCI hotplug ID connecting controller to UDC framework
51  * Allocates basic PCI resources for this USB device controller, and then
57 	struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;  in ci_hdrc_pci_probe()
63 		dev_err(&pdev->dev, "device doesn't provide driver data\n");  in ci_hdrc_pci_probe()
64 		return -ENODEV;  in ci_hdrc_pci_probe()
67 	ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL);  in ci_hdrc_pci_probe()
69 		return -ENOMEM;  in ci_hdrc_pci_probe()
75 	if (!pdev->irq) {  in ci_hdrc_pci_probe()
76 		dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");  in ci_hdrc_pci_probe()
77 		return -ENODEV;  in ci_hdrc_pci_probe()
83 	/* register a nop PHY */  in ci_hdrc_pci_probe()
84 	ci->phy = usb_phy_generic_register();  in ci_hdrc_pci_probe()
85 	if (IS_ERR(ci->phy))  in ci_hdrc_pci_probe()
86 		return PTR_ERR(ci->phy);  in ci_hdrc_pci_probe()
92 	res[1].start	= pdev->irq;  in ci_hdrc_pci_probe()
95 	ci->ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);  in ci_hdrc_pci_probe()
96 	if (IS_ERR(ci->ci)) {  in ci_hdrc_pci_probe()
97 		dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");  in ci_hdrc_pci_probe()
98 		usb_phy_generic_unregister(ci->phy);  in ci_hdrc_pci_probe()
99 		return PTR_ERR(ci->ci);  in ci_hdrc_pci_probe()
108  * ci_hdrc_pci_remove: PCI remove
113  * all PCI resources allocated for this USB device controller
119 	ci_hdrc_remove_device(ci->ci);  in ci_hdrc_pci_remove()
120 	usb_phy_generic_unregister(ci->phy);  in ci_hdrc_pci_remove()
124  * PCI device table
125  * PCI device structure
127  * Check "pci.h" for details
129  * Note: ehci-pci driver may try to probe the device first. You have to add an
130  * ID to the bypass_pci_id_table in ehci-pci driver to prevent this.
156 MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
167 MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");