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authorFlorian Fainelli <florian@openwrt.org>2012-10-08 15:11:29 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-22 11:23:59 -0700
commitcfa49b4b88fe14d2b5792f2ea7ba5b88c8cd1d15 (patch)
tree5a689a1365b7b0844421ec5a18a3a9af4d28c323 /drivers/usb/host/ohci-hcd.c
parentd4ae47dc5670efecd2214110caf33dfc0ff7191f (diff)
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USB: ohci: merge ohci_finish_controller_resume with ohci_resume
Merge ohci_finish_controller_resume with ohci_resume as suggested by Alan Stern. Since ohci_finish_controller_resume no longer exists, update the various OHCI drivers to call ohci_resume() instead. Some drivers used to set themselves the bit HCD_FLAG_HW_ACCESSIBLE, which is now handled by ohci_resume(). Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Florian Fainelli <florian@openwrt.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-hcd.c')
-rw-r--r--drivers/usb/host/ohci-hcd.c41
1 files changed, 39 insertions, 2 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 76663295e1c7..bac662636969 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1035,13 +1035,50 @@ static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int port;
+ bool need_reinit = false;
+
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
/* Make sure resume from hibernation re-enumerates everything */
if (hibernated)
- ohci_usb_reset(hcd_to_ohci(hcd));
+ ohci_usb_reset(ohci);
+
+ /* See if the controller is already running or has been reset */
+ ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
+ if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
+ need_reinit = true;
+ } else {
+ switch (ohci->hc_control & OHCI_CTRL_HCFS) {
+ case OHCI_USB_OPER:
+ case OHCI_USB_RESET:
+ need_reinit = true;
+ }
+ }
+
+ /* If needed, reinitialize and suspend the root hub */
+ if (need_reinit) {
+ spin_lock_irq(&ohci->lock);
+ ohci_rh_resume(ohci);
+ ohci_rh_suspend(ohci, 0);
+ spin_unlock_irq(&ohci->lock);
+ }
+
+ /* Normally just turn on port power and enable interrupts */
+ else {
+ ohci_dbg(ohci, "powerup ports\n");
+ for (port = 0; port < ohci->num_ports; port++)
+ ohci_writel(ohci, RH_PS_PPS,
+ &ohci->regs->roothub.portstatus[port]);
+
+ ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
+ ohci_readl(ohci, &ohci->regs->intrenable);
+ msleep(20);
+ }
+
+ usb_hcd_resume_root_hub(hcd);
- ohci_finish_controller_resume(hcd);
return 0;
}