| /* |
| * OHCI HCD for Netlogic XLS processors. |
| * |
| * (C) Copyright 2011 Netlogic Microsystems Inc. |
| * |
| * Based on ohci-au1xxx.c, and other Linux OHCI drivers. |
| * |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file COPYING in the main directory of this archive for |
| * more details. |
| */ |
| |
| #include <linux/platform_device.h> |
| #include <linux/signal.h> |
| |
| static int ohci_xls_probe_internal(const struct hc_driver *driver, |
| struct platform_device *dev) |
| { |
| struct resource *res; |
| struct usb_hcd *hcd; |
| int retval, irq; |
| |
| /* Get our IRQ from an earlier registered Platform Resource */ |
| irq = platform_get_irq(dev, 0); |
| if (irq < 0) { |
| dev_err(&dev->dev, "Found HC with no IRQ\n"); |
| return -ENODEV; |
| } |
| |
| /* Get our Memory Handle */ |
| res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| if (!res) { |
| dev_err(&dev->dev, "MMIO Handle incorrect!\n"); |
| return -ENODEV; |
| } |
| |
| hcd = usb_create_hcd(driver, &dev->dev, "XLS"); |
| if (!hcd) { |
| retval = -ENOMEM; |
| goto err1; |
| } |
| hcd->rsrc_start = res->start; |
| hcd->rsrc_len = resource_size(res); |
| |
| if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, |
| driver->description)) { |
| dev_dbg(&dev->dev, "Controller already in use\n"); |
| retval = -EBUSY; |
| goto err2; |
| } |
| |
| hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); |
| if (hcd->regs == NULL) { |
| dev_dbg(&dev->dev, "error mapping memory\n"); |
| retval = -EFAULT; |
| goto err3; |
| } |
| |
| retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); |
| if (retval != 0) |
| goto err4; |
| return retval; |
| |
| err4: |
| iounmap(hcd->regs); |
| err3: |
| release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| err2: |
| usb_put_hcd(hcd); |
| err1: |
| dev_err(&dev->dev, "init fail, %d\n", retval); |
| return retval; |
| } |
| |
| static int ohci_xls_reset(struct usb_hcd *hcd) |
| { |
| struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| |
| ohci_hcd_init(ohci); |
| return ohci_init(ohci); |
| } |
| |
| static int __devinit ohci_xls_start(struct usb_hcd *hcd) |
| { |
| struct ohci_hcd *ohci; |
| int ret; |
| |
| ohci = hcd_to_ohci(hcd); |
| ret = ohci_run(ohci); |
| if (ret < 0) { |
| dev_err(hcd->self.controller, "can't start %s\n", |
| hcd->self.bus_name); |
| ohci_stop(hcd); |
| return ret; |
| } |
| return 0; |
| } |
| |
| static struct hc_driver ohci_xls_hc_driver = { |
| .description = hcd_name, |
| .product_desc = "XLS OHCI Host Controller", |
| .hcd_priv_size = sizeof(struct ohci_hcd), |
| .irq = ohci_irq, |
| .flags = HCD_MEMORY | HCD_USB11, |
| .reset = ohci_xls_reset, |
| .start = ohci_xls_start, |
| .stop = ohci_stop, |
| .shutdown = ohci_shutdown, |
| .urb_enqueue = ohci_urb_enqueue, |
| .urb_dequeue = ohci_urb_dequeue, |
| .endpoint_disable = ohci_endpoint_disable, |
| .get_frame_number = ohci_get_frame, |
| .hub_status_data = ohci_hub_status_data, |
| .hub_control = ohci_hub_control, |
| #ifdef CONFIG_PM |
| .bus_suspend = ohci_bus_suspend, |
| .bus_resume = ohci_bus_resume, |
| #endif |
| .start_port_reset = ohci_start_port_reset, |
| }; |
| |
| static int ohci_xls_probe(struct platform_device *dev) |
| { |
| int ret; |
| |
| pr_debug("In ohci_xls_probe"); |
| if (usb_disabled()) |
| return -ENODEV; |
| ret = ohci_xls_probe_internal(&ohci_xls_hc_driver, dev); |
| return ret; |
| } |
| |
| static int ohci_xls_remove(struct platform_device *dev) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(dev); |
| |
| usb_remove_hcd(hcd); |
| iounmap(hcd->regs); |
| release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| usb_put_hcd(hcd); |
| return 0; |
| } |
| |
| static struct platform_driver ohci_xls_driver = { |
| .probe = ohci_xls_probe, |
| .remove = ohci_xls_remove, |
| .shutdown = usb_hcd_platform_shutdown, |
| .driver = { |
| .name = "ohci-xls-0", |
| .owner = THIS_MODULE, |
| }, |
| }; |