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USB: add do_wakeup parameter for PCI HCD suspend

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This patch (as1385) adds a "do_wakeup" parameter to the pci_suspend
method used by PCI-based host controller drivers.  ehci-hcd in
particular needs to know whether or not to enable wakeup when
suspending a controller.  Although that information is currently
available through device_may_wakeup(), when support is added for
runtime suspend this will no longer be true.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2010-06-25 14:02:14 -04:00 committed by Greg Kroah-Hartman
parent 057c58bfb1
commit 4147200d25
9 changed files with 17 additions and 15 deletions
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4
drivers/usb/core/hcd-pci.c
View file

@ -386,7 +386,9 @@ static int hcd_pci_suspend(struct device *dev)
return retval;
if (hcd->driver->pci_suspend) {
retval = hcd->driver->pci_suspend(hcd);
bool do_wakeup = device_may_wakeup(dev);
retval = hcd->driver->pci_suspend(hcd, do_wakeup);
suspend_report_result(hcd->driver->pci_suspend, retval);
if (retval)
return retval;

2
drivers/usb/host/ehci-au1xxx.c
View file

@ -228,7 +228,7 @@ static int ehci_hcd_au1xxx_drv_suspend(struct device *dev)
* the root hub is either suspended or stopped.
*/
spin_lock_irqsave(&ehci->lock, flags);
ehci_prepare_ports_for_controller_suspend(ehci);
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);

3
drivers/usb/host/ehci-fsl.c
View file

@ -313,7 +313,8 @@ static int ehci_fsl_drv_suspend(struct device *dev)
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
void __iomem *non_ehci = hcd->regs;
ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd));
ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
device_may_wakeup(dev));
if (!fsl_deep_sleep())
return 0;

5
drivers/usb/host/ehci-hub.c
View file

@ -107,7 +107,7 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
}
static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
bool suspending)
bool suspending, bool do_wakeup)
{
int port;
u32 temp;
@ -117,8 +117,7 @@ static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
* when the controller is suspended or resumed. In all other
* cases they don't need to be changed.
*/
if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup ||
device_may_wakeup(ehci_to_hcd(ehci)->self.controller))
if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup)
return;
/* clear phy low-power mode before changing wakeup flags */

4
drivers/usb/host/ehci-pci.c
View file

@ -277,7 +277,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
* Also they depend on separate root hub suspend/resume.
*/
static int ehci_pci_suspend(struct usb_hcd *hcd)
static int ehci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
unsigned long flags;
@ -291,7 +291,7 @@ static int ehci_pci_suspend(struct usb_hcd *hcd)
* the root hub is either suspended or stopped.
*/
spin_lock_irqsave (&ehci->lock, flags);
ehci_prepare_ports_for_controller_suspend(ehci);
ehci_prepare_ports_for_controller_suspend(ehci, do_wakeup);
ehci_writel(ehci, 0, &ehci->regs->intr_enable);
(void)ehci_readl(ehci, &ehci->regs->intr_enable);

8
drivers/usb/host/ehci.h
View file

@ -540,11 +540,11 @@ struct ehci_fstn {
/* Prepare the PORTSC wakeup flags during controller suspend/resume */
#define ehci_prepare_ports_for_controller_suspend(ehci) \
ehci_adjust_port_wakeup_flags(ehci, true);
#define ehci_prepare_ports_for_controller_suspend(ehci, do_wakeup) \
ehci_adjust_port_wakeup_flags(ehci, true, do_wakeup);
#define ehci_prepare_ports_for_controller_resume(ehci) \
ehci_adjust_port_wakeup_flags(ehci, false);
#define ehci_prepare_ports_for_controller_resume(ehci) \
ehci_adjust_port_wakeup_flags(ehci, false, false);
/*-------------------------------------------------------------------------*/

2
drivers/usb/host/ohci-pci.c
View file

@ -392,7 +392,7 @@ static int __devinit ohci_pci_start (struct usb_hcd *hcd)
#ifdef CONFIG_PM
static int ohci_pci_suspend(struct usb_hcd *hcd)
static int ohci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;

2
drivers/usb/host/uhci-hcd.c
View file

@ -788,7 +788,7 @@ static int uhci_rh_resume(struct usb_hcd *hcd)
return rc;
}
static int uhci_pci_suspend(struct usb_hcd *hcd)
static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int rc = 0;

2
include/linux/usb/hcd.h
View file

@ -211,7 +211,7 @@ struct hc_driver {
* a whole, not just the root hub; they're for PCI bus glue.
*/
/* called after suspending the hub, before entering D3 etc */
int (*pci_suspend)(struct usb_hcd *hcd);
int (*pci_suspend)(struct usb_hcd *hcd, bool do_wakeup);
/* called after entering D0 (etc), before resuming the hub */
int (*pci_resume)(struct usb_hcd *hcd, bool hibernated);