1 // SPDX-License-Identifier: GPL-1.0+
3  * OHCI HCD (Host Controller Driver) for USB.
6  * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
7  * (C) Copyright 2002 Hewlett-Packard Company
10  * Bus glue for OHCI HC on the of_platform bus
12  * Modified for of_platform bus from ohci-sa1111.c
28 	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);  in ohci_ppc_of_start()  local
31 	if ((ret = ohci_init(ohci)) < 0)  in ohci_ppc_of_start()
34 	if ((ret = ohci_run(ohci)) < 0) {  in ohci_ppc_of_start()
35 		dev_err(hcd->self.controller, "can't start %s\n",  in ohci_ppc_of_start()
36 			hcd->self.bus_name);  in ohci_ppc_of_start()
46 	.product_desc =		"OF OHCI",
50 	 * generic hardware linkage
89 	struct device_node *dn = op->dev.of_node;  in ohci_hcd_ppc_of_probe()
91 	struct ohci_hcd	*ohci;  in ohci_hcd_ppc_of_probe()  local
100 		return -ENODEV;  in ohci_hcd_ppc_of_probe()
103 		of_device_is_compatible(dn, "ohci-bigendian") ||  in ohci_hcd_ppc_of_probe()
104 		of_device_is_compatible(dn, "ohci-be");  in ohci_hcd_ppc_of_probe()
106 	dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n");  in ohci_hcd_ppc_of_probe()
112 	hcd = usb_create_hcd(&ohci_ppc_of_hc_driver, &op->dev, "PPC-OF USB");  in ohci_hcd_ppc_of_probe()
114 		return -ENOMEM;  in ohci_hcd_ppc_of_probe()
116 	hcd->rsrc_start = res.start;  in ohci_hcd_ppc_of_probe()
117 	hcd->rsrc_len = resource_size(&res);  in ohci_hcd_ppc_of_probe()
119 	hcd->regs = devm_ioremap_resource(&op->dev, &res);  in ohci_hcd_ppc_of_probe()
120 	if (IS_ERR(hcd->regs)) {  in ohci_hcd_ppc_of_probe()
121 		rv = PTR_ERR(hcd->regs);  in ohci_hcd_ppc_of_probe()
127 		dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",  in ohci_hcd_ppc_of_probe()
129 		rv = -EBUSY;  in ohci_hcd_ppc_of_probe()
133 	ohci = hcd_to_ohci(hcd);  in ohci_hcd_ppc_of_probe()
135 		ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;  in ohci_hcd_ppc_of_probe()
136 		if (of_device_is_compatible(dn, "fsl,mpc5200-ohci"))  in ohci_hcd_ppc_of_probe()
137 			ohci->flags |= OHCI_QUIRK_FRAME_NO;  in ohci_hcd_ppc_of_probe()
138 		if (of_device_is_compatible(dn, "mpc5200-ohci"))  in ohci_hcd_ppc_of_probe()
139 			ohci->flags |= OHCI_QUIRK_FRAME_NO;  in ohci_hcd_ppc_of_probe()
142 	ohci_hcd_init(ohci);  in ohci_hcd_ppc_of_probe()
146 		device_wakeup_enable(hcd->self.controller);  in ohci_hcd_ppc_of_probe()
151 	np = of_find_compatible_node(NULL, NULL, "ibm,usb-ehci-440epx");  in ohci_hcd_ppc_of_probe()
153 	/* Work around - At this point ohci_run has executed, the  in ohci_hcd_ppc_of_probe()
155 	* set up.  If the ehci driver is loaded, put the ohci core in  in ohci_hcd_ppc_of_probe()
157 	* suspended state when / if a non-high speed USB device is  in ohci_hcd_ppc_of_probe()
165 				writel_be((readl_be(&ohci->regs->control) |  in ohci_hcd_ppc_of_probe()
166 					OHCI_USB_SUSPEND), &ohci->regs->control);  in ohci_hcd_ppc_of_probe()
167 					(void) readl_be(&ohci->regs->control);  in ohci_hcd_ppc_of_probe()
185 	dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");  in ohci_hcd_ppc_of_remove()
189 	irq_dispose_mapping(hcd->irq);  in ohci_hcd_ppc_of_remove()
200 		.compatible = "ohci-bigendian",
204 		.compatible = "ohci-be",
210 		.compatible = "ohci-littledian",
214 		.compatible = "ohci-le",
223 #error "No endianness selected for ppc-of-ohci"
232 		.name = "ppc-of-ohci",