static int hiusb_ehci_hcd_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;
rc = 0;
if (time_before(jiffies, ehci->next_statechange))
msleep(20);
/* 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.
*/
spin_lock_irqsave(&ehci->lock, flags);
ehci_prepare_ports_for_controller_suspend(ehci,
device_may_wakeup(dev));
ehci_writel(ehci, 0, &ehci->regs->intr_enable);
(void)ehci_readl(ehci, &ehci->regs->intr_enable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
hiusb_stop_hcd();
spin_unlock_irqrestore(&ehci->lock, flags);
/*
* could save FLADJ in case of Vaux power loss
* we'd only use it to handle clock skew
*/
return rc;
}
static int hiusb_ohci_hcd_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
unsigned long flags;
int rc = 0;
/* Root hub was already suspended. Disable irq emission and
* mark HW unaccessible, bail out if RH has been resumed. Use
* the spinlock to properly synchronize with possible pending
* RH suspend or resume activity.
*
* This is still racy as hcd->state is manipulated outside of
* any locks =P But that will be a different fix.
*/
spin_lock_irqsave(&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
hiusb_stop_hcd();
bail:
spin_unlock_irqrestore(&ohci->lock, flags);
return rc;
}
static int hiusb_ehci_hcd_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(&hiusb_ehci_hc_driver, &pdev->dev, "hiusb-ehci");
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;
}
hiusb_start_hcd();
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_DISABLED | IRQF_SHARED);
if (ret == 0) {
platform_set_drvdata(pdev, hcd);
return ret;
}
hiusb_stop_hcd();
iounmap(hcd->regs);
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
return ret;
}
static int hiusb_ehci_hcd_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
bool do_wakeup = device_may_wakeup(dev);
int rc = 0;
rc = ehci_suspend(hcd, do_wakeup);
hiusb_stop_hcd();
return rc;
}
static int hiusb_ehci_hcd_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
usb_remove_hcd(hcd);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
hiusb_stop_hcd();
platform_set_drvdata(pdev, NULL);
return 0;
}
static int hiusb_ohci_hcd_drv_probe(struct platform_device *pdev)
{
int ret;
struct usb_hcd *hcd;
if (usb_disabled())
return -ENODEV;
if (pdev->resource[1].flags != IORESOURCE_IRQ) {
pr_debug("resource[1] is not IORESOURCE_IRQ\n");
return -ENOMEM;
}
hcd = usb_create_hcd(&hiusb_ohci_hc_driver, &pdev->dev, "hiusb-ohci");
if (!hcd)
return -ENOMEM;
hcd->rsrc_start = pdev->resource[0].start;
hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_debug("request_mem_region failed\n");
ret = -EBUSY;
goto err1;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
pr_debug("ioremap failed\n");
ret = -ENOMEM;
goto err2;
}
hiusb_start_hcd();
ohci_hcd_init(hcd_to_ohci(hcd));
ret = usb_add_hcd(hcd, pdev->resource[1].start,
IRQF_DISABLED | IRQF_SHARED);
if (ret == 0) {
platform_set_drvdata(pdev, hcd);
return ret;
}
hiusb_stop_hcd();
iounmap(hcd->regs);
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
return ret;
}