PCI: add PCI Express ASPM support

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

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ae3df46..f331feb 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -18,6 +18,7 @@
 #include <linux/spinlock.h>
 #include <linux/string.h>
 #include <linux/log2.h>
+#include <linux/pci-aspm.h>
 #include <asm/dma.h>   /* isa_dma_bridge_buggy */
 #include "pci.h"
 
@@ -314,24 +315,6 @@ int pci_find_ht_capability(struct pci_dev *dev, int ht_cap)
 }
 EXPORT_SYMBOL_GPL(pci_find_ht_capability);
 
-void pcie_wait_pending_transaction(struct pci_dev *dev)
-{
-       int pos;
-       u16 reg16;
-
-       pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
-       if (!pos)
-               return;
-       while (1) {
-               pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, &reg16);
-               if (!(reg16 & PCI_EXP_DEVSTA_TRPND))
-                       break;
-               cpu_relax();
-       }
-
-}
-EXPORT_SYMBOL_GPL(pcie_wait_pending_transaction);
-
 /**
  * pci_find_parent_resource - return resource region of parent bus of given region
  * @dev: PCI device structure contains resources to be searched
@@ -519,6 +502,9 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
        if (need_restore)
                pci_restore_bars(dev);
 
+       if (dev->bus->self)
+               pcie_aspm_pm_state_change(dev->bus->self);
+
        return 0;
 }
 
@@ -554,6 +540,7 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
        case PM_EVENT_PRETHAW:
                /* REVISIT both freeze and pre-thaw "should" use D0 */
        case PM_EVENT_SUSPEND:
+       case PM_EVENT_HIBERNATE:
                return PCI_D3hot;
        default:
                printk("Unrecognized suspend event %d\n", state.event);
@@ -935,9 +922,6 @@ pci_disable_device(struct pci_dev *dev)
        if (atomic_sub_return(1, &dev->enable_cnt) != 0)
                return;
 
-       /* Wait for all transactions are finished before disabling the device */
-       pcie_wait_pending_transaction(dev);
-
        pci_read_config_word(dev, PCI_COMMAND, &pci_command);
        if (pci_command & PCI_COMMAND_MASTER) {
                pci_command &= ~PCI_COMMAND_MASTER;