/*-------------------------------------------------------------------------*/
-#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM)
+#ifdef CONFIG_PM
#define OHCI_SCHED_ENABLES \
(OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE)
static void finish_unlinks (struct ohci_hcd *, u16 , struct pt_regs *);
static int ohci_restart (struct ohci_hcd *ohci);
-static int ohci_hub_suspend (struct usb_hcd *hcd)
+static int ohci_bus_suspend (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int status = 0;
spin_lock_irqsave (&ohci->lock, flags);
+ if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) {
+ spin_unlock_irqrestore (&ohci->lock, flags);
+ return -ESHUTDOWN;
+ }
+
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_RESUME:
ohci_dbg (ohci, "suspend root hub\n");
/* First stop any processing */
- hcd->state = HC_STATE_QUIESCING;
if (ohci->hc_control & OHCI_SCHED_ENABLES) {
int limit;
&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;
- /* Suspend hub */
+ /* Suspend hub ... this is the "global (to this bus) suspend" mode,
+ * which doesn't imply ports will first be individually suspended.
+ */
ohci->hc_control &= ~OHCI_CTRL_HCFS;
ohci->hc_control |= OHCI_USB_SUSPEND;
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
ohci->next_statechange = jiffies + msecs_to_jiffies (5);
done:
+ /* external suspend vs self autosuspend ... same effect */
if (status == 0)
- hcd->state = HC_STATE_SUSPENDED;
+ usb_hcd_suspend_root_hub(hcd);
spin_unlock_irqrestore (&ohci->lock, flags);
return status;
}
}
/* caller has locked the root hub */
-static int ohci_hub_resume (struct usb_hcd *hcd)
+static int ohci_bus_resume (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
u32 temp, enables;
int status = -EINPROGRESS;
+ unsigned long flags;
if (time_before (jiffies, ohci->next_statechange))
msleep(5);
- spin_lock_irq (&ohci->lock);
+ spin_lock_irqsave (&ohci->lock, flags);
+
+ if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) {
+ spin_unlock_irqrestore (&ohci->lock, flags);
+ return -ESHUTDOWN;
+ }
+
+
ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
- /* this can happen after suspend-to-disk */
+ /* this can happen after resuming a swsusp snapshot */
if (hcd->state == HC_STATE_RESUMING) {
ohci_dbg (ohci, "BIOS/SMM active, control %03x\n",
ohci->hc_control);
ohci_info (ohci, "wakeup\n");
break;
case OHCI_USB_OPER:
- ohci_dbg (ohci, "already resumed\n");
- status = 0;
+ /* this can happen after resuming a swsusp snapshot */
+ ohci_dbg (ohci, "snapshot resume? reinit\n");
+ status = -EBUSY;
break;
default: /* RESET, we lost power */
- ohci_dbg (ohci, "root hub hardware reset\n");
+ ohci_dbg (ohci, "lost power\n");
status = -EBUSY;
}
- spin_unlock_irq (&ohci->lock);
+ spin_unlock_irqrestore (&ohci->lock, flags);
if (status == -EBUSY) {
(void) ohci_init (ohci);
return ohci_restart (ohci);
if (status != -EINPROGRESS)
return status;
- temp = roothub_a (ohci) & RH_A_NDP;
+ temp = ohci->num_ports;
enables = 0;
while (temp--) {
u32 stat = ohci_readl (ohci,
}
/* Some controllers (lucent erratum) need extra-long delays */
- hcd->state = HC_STATE_RESUMING;
- mdelay (20 /* usb 11.5.1.10 */ + 15);
+ msleep (20 /* usb 11.5.1.10 */ + 12 /* 32 msec counter */ + 1);
temp = ohci_readl (ohci, &ohci->regs->control);
temp &= OHCI_CTRL_HCFS;
(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);
(void) ohci_readl (ohci, &ohci->regs->control);
}
- hcd->state = HC_STATE_RUNNING;
return 0;
}
-static void ohci_rh_resume (void *_hcd)
-{
- struct usb_hcd *hcd = _hcd;
-
- usb_lock_device (hcd->self.root_hub);
- (void) ohci_hub_resume (hcd);
- usb_unlock_device (hcd->self.root_hub);
-}
-
-#else
-
-static void ohci_rh_resume (void *_hcd)
-{
- struct ohci_hcd *ohci = hcd_to_ohci (_hcd);
- ohci_dbg(ohci, "rh_resume ??\n");
-}
-
-#endif /* CONFIG_USB_SUSPEND || CONFIG_PM */
+#endif /* CONFIG_PM */
/*-------------------------------------------------------------------------*/
ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
- int ports, i, changed = 0, length = 1;
- int can_suspend = hcd->can_wakeup;
+ int i, changed = 0, length = 1;
+ int can_suspend = device_may_wakeup(&hcd->self.root_hub->dev);
unsigned long flags;
spin_lock_irqsave (&ohci->lock, flags);
/* handle autosuspended root: finish resuming before
* letting khubd or root hub timer see state changes.
*/
- if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER
- || !HC_IS_RUNNING(hcd->state)) {
+ if (unlikely((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER
+ || !HC_IS_RUNNING(hcd->state))) {
can_suspend = 0;
goto done;
}
- ports = roothub_a (ohci) & RH_A_NDP;
- if (ports > MAX_ROOT_PORTS) {
- ohci_err (ohci, "bogus NDP=%d, rereads as NDP=%d\n", ports,
+ /* undocumented erratum seen on at least rev D */
+ if ((ohci->flags & OHCI_QUIRK_AMD756)
+ && (roothub_a (ohci) & RH_A_NDP) > MAX_ROOT_PORTS) {
+ ohci_warn (ohci, "bogus NDP, rereads as NDP=%d\n",
ohci_readl (ohci, &ohci->regs->roothub.a) & RH_A_NDP);
/* retry later; "should not happen" */
goto done;
buf [0] = changed = 1;
else
buf [0] = 0;
- if (ports > 7) {
+ if (ohci->num_ports > 7) {
buf [1] = 0;
length++;
}
/* look at each port */
- for (i = 0; i < ports; i++) {
+ for (i = 0; i < ohci->num_ports; i++) {
u32 status = roothub_portstatus (ohci, i);
if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
*/
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;
}
#ifdef CONFIG_PM
/* save power by suspending idle root hubs;
* INTR_RD wakes us when there's work
- * NOTE: if we can do this, we don't need a root hub timer!
*/
if (can_suspend
&& !changed
& ohci->hc_control)
== OHCI_USB_OPER
&& time_after (jiffies, ohci->next_statechange)
- && usb_trylock_device (hcd->self.root_hub)
+ && usb_trylock_device (hcd->self.root_hub) == 0
) {
ohci_vdbg (ohci, "autosuspend\n");
- (void) ohci_hub_suspend (hcd);
- hcd->state = HC_STATE_RUNNING;
+ (void) ohci_bus_suspend (hcd);
usb_unlock_device (hcd->self.root_hub);
}
#endif
struct usb_hub_descriptor *desc
) {
u32 rh = roothub_a (ohci);
- int ports = rh & RH_A_NDP;
u16 temp;
desc->bDescriptorType = 0x29;
desc->bPwrOn2PwrGood = (rh & RH_A_POTPGT) >> 24;
desc->bHubContrCurrent = 0;
- desc->bNbrPorts = ports;
- temp = 1 + (ports / 8);
+ desc->bNbrPorts = ohci->num_ports;
+ temp = 1 + (ohci->num_ports / 8);
desc->bDescLength = 7 + 2 * temp;
temp = 0;
/* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */
rh = roothub_b (ohci);
+ memset(desc->bitmap, 0xff, sizeof(desc->bitmap));
desc->bitmap [0] = rh & RH_B_DR;
- if (ports > 7) {
+ if (ohci->num_ports > 7) {
desc->bitmap [1] = (rh & RH_B_DR) >> 8;
- desc->bitmap [2] = desc->bitmap [3] = 0xff;
+ desc->bitmap [2] = 0xff;
} else
desc->bitmap [1] = 0xff;
}
u32 temp;
int retval = 0;
+ if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
+ return -ESHUTDOWN;
+
switch (typeReq) {
case ClearHubFeature:
switch (wValue) {
temp = RH_PS_POCI;
if ((ohci->hc_control & OHCI_CTRL_HCFS)
!= OHCI_USB_OPER)
- schedule_work (&ohci->rh_resume);
+ usb_hcd_resume_root_hub(hcd);
break;
case USB_PORT_FEAT_C_SUSPEND:
temp = RH_PS_PSSC;
git://git.onelab.eu / linux-2.6.git / blobdiff