[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...

[pandora-kernel.git] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index d382bdb..1b34fc5 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -235,7 +235,7 @@ pci_find_parent_resource(const struct pci_dev *dev, struct resource *res)
  * -EIO if device does not support PCI PM.
  * 0 if we can successfully change the power state.
  */
-
+int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
 int
 pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 {
@@ -299,11 +299,20 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
                msleep(10);
        else if (state == PCI_D2 || dev->current_state == PCI_D2)
                udelay(200);
-       dev->current_state = state;
 
+       /*
+        * Give firmware a chance to be called, such as ACPI _PRx, _PSx
+        * Firmware method after natice method ?
+        */
+       if (platform_pci_set_power_state)
+               platform_pci_set_power_state(dev, state);
+
+       dev->current_state = state;
        return 0;
 }
 
+int (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
+ 
 /**
  * pci_choose_state - Choose the power state of a PCI device
  * @dev: PCI device to be suspended
@@ -316,10 +325,17 @@ 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: