diff options
Diffstat (limited to 'drivers/usb/host/ehci-au1xxx.c')
| -rw-r--r-- | drivers/usb/host/ehci-au1xxx.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c deleted file mode 100644 index bf7441afed1..00000000000 --- a/drivers/usb/host/ehci-au1xxx.c +++ /dev/null @@ -1,267 +0,0 @@ -/* - * EHCI HCD (Host Controller Driver) for USB. - * - * Bus Glue for AMD Alchemy Au1xxx - * - * Based on "ohci-au1xxx.c" by Matt Porter <mporter@kernel.crashing.org> - * - * Modified for AMD Alchemy Au1200 EHC - * by K.Boge <karsten.boge@amd.com> - * - * This file is licenced under the GPL. - */ - -#include <linux/platform_device.h> -#include <asm/mach-au1x00/au1000.h> - - -extern int usb_disabled(void); - -static int au1xxx_ehci_setup(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int ret = ehci_init(hcd); - - ehci->need_io_watchdog = 0; - ehci_reset(ehci); - return ret; -} - -static const struct hc_driver ehci_au1xxx_hc_driver = { - .description = hcd_name, - .product_desc = "Au1xxx EHCI", - .hcd_priv_size = sizeof(struct ehci_hcd), - - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, - - /* - * basic lifecycle operations - * - * FIXME -- ehci_init() doesn't do enough here. - * See ehci-ppc-soc for a complete implementation. - */ - .reset = au1xxx_ehci_setup, - .start = ehci_run, - .stop = ehci_stop, - .shutdown = ehci_shutdown, - - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = ehci_urb_enqueue, - .urb_dequeue = ehci_urb_dequeue, - .endpoint_disable = ehci_endpoint_disable, - .endpoint_reset = ehci_endpoint_reset, - - /* - * scheduling support - */ - .get_frame_number = ehci_get_frame, - - /* - * root hub support - */ - .hub_status_data = ehci_hub_status_data, - .hub_control = ehci_hub_control, - .bus_suspend = ehci_bus_suspend, - .bus_resume = ehci_bus_resume, - .relinquish_port = ehci_relinquish_port, - .port_handed_over = ehci_port_handed_over, - - .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, -}; - -static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) -{ - struct usb_hcd *hcd; - struct ehci_hcd *ehci; - struct resource *res; - int ret; - - if (usb_disabled()) - return -ENODEV; - - if (pdev->resource[1].flags != IORESOURCE_IRQ) { - pr_debug("resource[1] is not IORESOURCE_IRQ"); - return -ENOMEM; - } - hcd = usb_create_hcd(&ehci_au1xxx_hc_driver, &pdev->dev, "Au1xxx"); - if (!hcd) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - hcd->rsrc_start = res->start; - hcd->rsrc_len = resource_size(res); - - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - pr_debug("request_mem_region failed"); - ret = -EBUSY; - goto err1; - } - - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - pr_debug("ioremap failed"); - ret = -ENOMEM; - goto err2; - } - - if (alchemy_usb_control(ALCHEMY_USB_EHCI0, 1)) { - printk(KERN_INFO "%s: controller init failed!\n", pdev->name); - ret = -ENODEV; - goto err3; - } - - ehci = hcd_to_ehci(hcd); - ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = readl(&ehci->caps->hcs_params); - - ret = usb_add_hcd(hcd, pdev->resource[1].start, - IRQF_SHARED); - if (ret == 0) { - platform_set_drvdata(pdev, hcd); - return ret; - } - - alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); -err3: - iounmap(hcd->regs); -err2: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); -err1: - usb_put_hcd(hcd); - return ret; -} - -static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - usb_remove_hcd(hcd); - alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); - platform_set_drvdata(pdev, NULL); - - return 0; -} - -#ifdef CONFIG_PM -static int ehci_hcd_au1xxx_drv_suspend(struct device *dev) -{ - struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - unsigned long flags; - int rc = 0; - - if (time_before(jiffies, ehci->next_statechange)) - msleep(10); - - /* Root hub was already suspended. Disable irq emission and - * mark HW unaccessible. The PM and USB cores make sure that - * the root hub is either suspended or stopped. - */ - ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev)); - spin_lock_irqsave(&ehci->lock, flags); - ehci_writel(ehci, 0, &ehci->regs->intr_enable); - (void)ehci_readl(ehci, &ehci->regs->intr_enable); - - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore(&ehci->lock, flags); - - // could save FLADJ in case of Vaux power loss - // ... we'd only use it to handle clock skew - - alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); - - return rc; -} - -static int ehci_hcd_au1xxx_drv_resume(struct device *dev) -{ - struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - alchemy_usb_control(ALCHEMY_USB_EHCI0, 1); - - // maybe restore FLADJ - - if (time_before(jiffies, ehci->next_statechange)) - msleep(100); - - /* Mark hardware accessible again as we are out of D3 state by now */ - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - /* If CF is still set, we maintained PCI Vaux power. - * Just undo the effect of ehci_pci_suspend(). - */ - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { - int mask = INTR_MASK; - - ehci_prepare_ports_for_controller_resume(ehci); - if (!hcd->self.root_hub->do_remote_wakeup) - mask &= ~STS_PCD; - ehci_writel(ehci, mask, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - return 0; - } - - ehci_dbg(ehci, "lost power, restarting\n"); - usb_root_hub_lost_power(hcd->self.root_hub); - - /* Else reset, to cope with power loss or flush-to-storage - * style "resume" having let BIOS kick in during reboot. - */ - (void) ehci_halt(ehci); - (void) ehci_reset(ehci); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - - ehci_writel(ehci, ehci->command, &ehci->regs->command); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ - - /* here we "know" root ports should always stay powered */ - ehci_port_power(ehci, 1); - - ehci->rh_state = EHCI_RH_SUSPENDED; - - return 0; -} - -static const struct dev_pm_ops au1xxx_ehci_pmops = { - .suspend = ehci_hcd_au1xxx_drv_suspend, - .resume = ehci_hcd_au1xxx_drv_resume, -}; - -#define AU1XXX_EHCI_PMOPS &au1xxx_ehci_pmops - -#else -#define AU1XXX_EHCI_PMOPS NULL -#endif - -static struct platform_driver ehci_hcd_au1xxx_driver = { - .probe = ehci_hcd_au1xxx_drv_probe, - .remove = ehci_hcd_au1xxx_drv_remove, - .shutdown = usb_hcd_platform_shutdown, - .driver = { - .name = "au1xxx-ehci", - .owner = THIS_MODULE, - .pm = AU1XXX_EHCI_PMOPS, - } -}; - -MODULE_ALIAS("platform:au1xxx-ehci"); |