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[ACPI] PCI can now get suspend state from firmware

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pci_choose_state() can now call
	platform_pci_choose_state()
		and ACPI can answer

http://bugzilla.kernel.org/show_bug.cgi?id=4277

Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
David Shaohua Li
2005-03-19 00:15:48 -05:00
committed by Len Brown
parent 84df749f36
commit 0f64474b8f
3 changed files with 59 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/pci/pci.c
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@@ -304,6 +304,8 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
return 0;
}
int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state) = NULL;
/**
* pci_choose_state - Choose the power state of a PCI device
* @dev: PCI device to be suspended
@@ -316,10 +318,17 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
{
int ret;
if (!pci_find_capability(dev, PCI_CAP_ID_PM))
return PCI_D0;
switch (state) {
if (platform_pci_choose_state) {
ret = platform_pci_choose_state(dev, state);
if (ret >= 0)
state = ret;
}
switch (state) {
case 0: return PCI_D0;
case 3: return PCI_D3hot;
default: