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USB: refactor the powermac-specific ASIC clock code

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This patch (as1383) takes the powermac-specific code from the PCI HCD
glue layer and encapsulates it in its own subroutine.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2010-06-25 14:01:49 -04:00 committed by Greg Kroah-Hartman
parent f8dae531ec
commit 2138a1f183
1 changed files with 23 additions and 21 deletions
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44
drivers/usb/core/hcd-pci.c
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@ -332,6 +332,27 @@ EXPORT_SYMBOL_GPL(usb_hcd_pci_shutdown);
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_PPC_PMAC
static void powermac_set_asic(struct pci_dev *pci_dev, int enable)
{
/* Enanble or disable ASIC clocks for USB */
if (machine_is(powermac)) {
struct device_node *of_node;
of_node = pci_device_to_OF_node(pci_dev);
if (of_node)
pmac_call_feature(PMAC_FTR_USB_ENABLE,
of_node, 0, enable);
}
}
#else
static inline void powermac_set_asic(struct pci_dev *pci_dev, int enable)
{}
#endif /* CONFIG_PPC_PMAC */
static int check_root_hub_suspended(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
@ -416,16 +437,7 @@ static int hcd_pci_suspend_noirq(struct device *dev)
return retval;
}
#ifdef CONFIG_PPC_PMAC
/* Disable ASIC clocks for USB */
if (machine_is(powermac)) {
struct device_node *of_node;
of_node = pci_device_to_OF_node(pci_dev);
if (of_node)
pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0);
}
#endif
powermac_set_asic(pci_dev, 0);
return retval;
}
@ -433,17 +445,7 @@ static int hcd_pci_resume_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
#ifdef CONFIG_PPC_PMAC
/* Reenable ASIC clocks for USB */
if (machine_is(powermac)) {
struct device_node *of_node;
of_node = pci_device_to_OF_node(pci_dev);
if (of_node)
pmac_call_feature(PMAC_FTR_USB_ENABLE,
of_node, 0, 1);
}
#endif
powermac_set_asic(pci_dev, 1);
/* Go back to D0 and disable remote wakeup */
pci_back_from_sleep(pci_dev);