1 // SPDX-License-Identifier: GPL-2.0+
3  * Driver for Aeroflex Gaisler GRLIB GRUSBHC EHCI host controller
9  * Based on ehci-ppc-of.c which is:
11  * and in turn based on "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de>
12  * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com>
26 	.product_desc		= "GRLIB GRUSBHC EHCI",
74 	struct device_node *dn = op->dev.of_node;  in ehci_hcd_grlib_probe()
76 	struct ehci_hcd	*ehci = NULL;  in ehci_hcd_grlib_probe()  local
83 		return -ENODEV;  in ehci_hcd_grlib_probe()
85 	dev_dbg(&op->dev, "initializing GRUSBHC EHCI USB Controller\n");  in ehci_hcd_grlib_probe()
92 	op->dev.dma_mask = &op->dev.coherent_dma_mask;  in ehci_hcd_grlib_probe()
93 	hcd = usb_create_hcd(&ehci_grlib_hc_driver, &op->dev,  in ehci_hcd_grlib_probe()
94 			"GRUSBHC EHCI USB");  in ehci_hcd_grlib_probe()
96 		return -ENOMEM;  in ehci_hcd_grlib_probe()
98 	hcd->rsrc_start = res.start;  in ehci_hcd_grlib_probe()
99 	hcd->rsrc_len = resource_size(&res);  in ehci_hcd_grlib_probe()
103 		dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",  in ehci_hcd_grlib_probe()
105 		rv = -EBUSY;  in ehci_hcd_grlib_probe()
109 	hcd->regs = devm_ioremap_resource(&op->dev, &res);  in ehci_hcd_grlib_probe()
110 	if (IS_ERR(hcd->regs)) {  in ehci_hcd_grlib_probe()
111 		rv = PTR_ERR(hcd->regs);  in ehci_hcd_grlib_probe()
115 	ehci = hcd_to_ehci(hcd);  in ehci_hcd_grlib_probe()
117 	ehci->caps = hcd->regs;  in ehci_hcd_grlib_probe()
120 	hc_capbase = ehci_readl(ehci, &ehci->caps->hc_capbase);  in ehci_hcd_grlib_probe()
121 	if (HC_VERSION(ehci, hc_capbase) != GRUSBHC_HCIVERSION) {  in ehci_hcd_grlib_probe()
122 		ehci->big_endian_mmio = 1;  in ehci_hcd_grlib_probe()
123 		ehci->big_endian_desc = 1;  in ehci_hcd_grlib_probe()
124 		ehci->big_endian_capbase = 1;  in ehci_hcd_grlib_probe()
131 	device_wakeup_enable(hcd->self.controller);  in ehci_hcd_grlib_probe()
147 	dev_dbg(&op->dev, "stopping GRLIB GRUSBHC EHCI USB Controller\n");  in ehci_hcd_grlib_remove()
151 	irq_dispose_mapping(hcd->irq);  in ehci_hcd_grlib_remove()
174 		.name = "grlib-ehci",