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authorDavid Brownell <david-b@pacbell.net>2006-01-24 00:28:07 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2006-03-20 23:49:56 +0100
commit6a9062f393fa48125df23c5491543828a21e1ae0 (patch)
treeca79e036f5a00253af790b45da6a6102b58ff97c /drivers/usb/host/ohci-hub.c
parent[PATCH] USB: usbcore sets up root hubs earlier (diff)
downloadlinux-6a9062f393fa48125df23c5491543828a21e1ae0.tar.xz
linux-6a9062f393fa48125df23c5491543828a21e1ae0.zip
[PATCH] USB: ohci uses driver model wakeup flags
This makes OHCI use the driver model wakeup control bits for its root hub (e.g. disable on amd756, because of chip erratum) and for the controller itself. It no longer uses the hcd glue bits with those roles, and depends on the previous patch making the root hub available earlier. Note that on most platforms (boot code properly setting the RWC bit) this gives a partial workaround for the way PCI isn't currently flagging devices that support PME# signals. (Because of odd PCI init sequencing on PPC.) That's because many OHCI controllers support "legacy PCI PM" ... without involving any PCI PM capability. USB wakeup from STR, if it works on your system, may still involve tweaking things by hand in /proc/acpi/wakeup. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ohci-hub.c')
-rw-r--r--drivers/usb/host/ohci-hub.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index 4b2226d77b34..0bb972b58336 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -107,7 +107,7 @@ static int ohci_bus_suspend (struct usb_hcd *hcd)
&ohci->regs->intrstatus);
/* maybe resume can wake root hub */
- if (hcd->remote_wakeup)
+ if (device_may_wakeup(&ohci_to_hcd(ohci)->self.root_hub->dev))
ohci->hc_control |= OHCI_CTRL_RWE;
else
ohci->hc_control &= ~OHCI_CTRL_RWE;
@@ -246,9 +246,9 @@ static int ohci_bus_resume (struct usb_hcd *hcd)
(void) ohci_readl (ohci, &ohci->regs->control);
msleep (3);
- temp = OHCI_CONTROL_INIT | OHCI_USB_OPER;
- if (hcd->can_wakeup)
- temp |= OHCI_CTRL_RWC;
+ temp = ohci->hc_control;
+ temp &= OHCI_CTRL_RWC;
+ temp |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
ohci->hc_control = temp;
ohci_writel (ohci, temp, &ohci->regs->control);
(void) ohci_readl (ohci, &ohci->regs->control);
@@ -302,7 +302,7 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int i, changed = 0, length = 1;
- int can_suspend = hcd->can_wakeup;
+ int can_suspend = device_may_wakeup(&hcd->self.root_hub->dev);
unsigned long flags;
spin_lock_irqsave (&ohci->lock, flags);
@@ -354,7 +354,7 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
*/
if (!(status & RH_PS_CCS))
continue;
- if ((status & RH_PS_PSS) && hcd->remote_wakeup)
+ if ((status & RH_PS_PSS) && can_suspend)
continue;
can_suspend = 0;
}