1 // SPDX-License-Identifier: GPL-1.0+
3  * OHCI HCD (Host Controller Driver) for USB.
6  * (C) Copyright 2000-2002 David Brownell <[email protected]>
7  * (C) Copyright 2002 Hewlett-Packard Company
17 #include <asm/mach-types.h>
21 #error "This file is SA-1111 bus glue.  CONFIG_SA1111 must be defined."
46 	unsigned long status = readl_relaxed(hcd->regs + USB_STATUS);
59 	struct ohci_hcd *ohci = hcd_to_ohci(hcd);  in ohci_sa1111_reset()  local
61 	ohci_hcd_init(ohci);  in ohci_sa1111_reset()
62 	return ohci_init(ohci);  in ohci_sa1111_reset()
67 	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);  in ohci_sa1111_start()  local
70 	ret = ohci_run(ohci);  in ohci_sa1111_start()
72 		ohci_err(ohci, "can't start\n");  in ohci_sa1111_start()
80 	.product_desc =		"SA-1111 OHCI",
84 	 * generic hardware linkage
126 	dev_dbg(&dev->dev, "starting SA-1111 OHCI USB Controller\n");  in sa1111_start_hc()
136 		      dev->mapbase + USB_RESET);  in sa1111_start_hc()
145 		writel_relaxed(usb_rst, dev->mapbase + USB_RESET);  in sa1111_start_hc()
155 	dev_dbg(&dev->dev, "stopping SA-1111 OHCI USB Controller\n");  in sa1111_stop_hc()
160 	usb_rst = readl_relaxed(dev->mapbase + USB_RESET);  in sa1111_stop_hc()
162 		      dev->mapbase + USB_RESET);  in sa1111_stop_hc()
171  * ohci_hcd_sa1111_probe - initialize SA-1111-based HCDs
182 		return -ENODEV;  in ohci_hcd_sa1111_probe()
187 	 * SA-1111 bus code (which includes bug workarounds.)  in ohci_hcd_sa1111_probe()
190 	hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111");  in ohci_hcd_sa1111_probe()
192 		return -ENOMEM;  in ohci_hcd_sa1111_probe()
194 	hcd->rsrc_start = dev->res.start;  in ohci_hcd_sa1111_probe()
195 	hcd->rsrc_len = resource_size(&dev->res);  in ohci_hcd_sa1111_probe()
199 		ret = irq ? : -ENXIO;  in ohci_hcd_sa1111_probe()
204 	 * According to the "Intel StrongARM SA-1111 Microprocessor Companion  in ohci_hcd_sa1111_probe()
210 	 * of several different (processor-relative) address bits.  in ohci_hcd_sa1111_probe()
212 	 * Section 4.6 of the "Intel StrongARM SA-1111 Development Module  in ohci_hcd_sa1111_probe()
214 	 * target of SA-1111 DMA (either SDRAM bank 0 on Assabet, or  in ohci_hcd_sa1111_probe()
228 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {  in ohci_hcd_sa1111_probe()
229 		dev_dbg(&dev->dev, "request_mem_region failed\n");  in ohci_hcd_sa1111_probe()
230 		ret = -EBUSY;  in ohci_hcd_sa1111_probe()
234 	hcd->regs = dev->mapbase;  in ohci_hcd_sa1111_probe()
242 		device_wakeup_enable(hcd->self.controller);  in ohci_hcd_sa1111_probe()
248 	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);  in ohci_hcd_sa1111_probe()
255  * ohci_hcd_sa1111_remove - shutdown processing for SA-1111-based HCDs
267 	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);  in ohci_hcd_sa1111_remove()
276 	if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {  in ohci_hcd_sa1111_shutdown()
277 		hcd->driver->shutdown(hcd);  in ohci_hcd_sa1111_shutdown()
284 		.name	= "sa1111-ohci",