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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-07 15:41:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-07 15:41:01 -0800
commitb424e8d3b438e841cd1700f6433a100a5d611e4a (patch)
tree545638d0b925de4c7f740286760767cca86cb91e /drivers/acpi
parent7c7758f99d39d529a64d4f60d22129bbf2f16d74 (diff)
parentf6dc1e5e3d4b523e1616b43beddb04e4fb1d376a (diff)
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (98 commits) PCI PM: Put PM callbacks in the order of execution PCI PM: Run default PM callbacks for all devices using new framework PCI PM: Register power state of devices during initialization PCI PM: Call pci_fixup_device from legacy routines PCI PM: Rearrange code in pci-driver.c PCI PM: Avoid touching devices behind bridges in unknown state PCI PM: Move pci_has_legacy_pm_support PCI PM: Power-manage devices without drivers during suspend-resume PCI PM: Add suspend counterpart of pci_reenable_device PCI PM: Fix poweroff and restore callbacks PCI: Use msleep instead of cpu_relax during ASPM link retraining PCI: PCIe portdrv: Add kerneldoc comments to remining core funtions PCI: PCIe portdrv: Rearrange code so that related things are together PCI: PCIe portdrv: Fix suspend and resume of PCI Express port services PCI: PCIe portdrv: Add kerneldoc comments to some core functions x86/PCI: Do not use interrupt links for devices using MSI-X net: sfc: Use pci_clear_master() to disable bus mastering PCI: Add pci_clear_master() as opposite of pci_set_master() PCI hotplug: remove redundant test in cpq hotplug PCI: pciehp: cleanup register and field definitions ...
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/pci_root.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 642554b1b60..5b38a026d12 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -31,6 +31,7 @@
#include <linux/spinlock.h>
#include <linux/pm.h>
#include <linux/pci.h>
+#include <linux/pci-acpi.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
@@ -193,6 +194,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
unsigned long long value = 0;
acpi_handle handle = NULL;
struct acpi_device *child;
+ u32 flags, base_flags;
if (!device)
@@ -210,6 +212,13 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
device->ops.bind = acpi_pci_bind;
+ /*
+ * All supported architectures that use ACPI have support for
+ * PCI domains, so we indicate this in _OSC support capabilities.
+ */
+ flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
+ pci_acpi_osc_support(device->handle, flags);
+
/*
* Segment
* -------
@@ -335,6 +344,17 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
list_for_each_entry(child, &device->children, node)
acpi_pci_bridge_scan(child);
+ /* Indicate support for various _OSC capabilities. */
+ if (pci_ext_cfg_avail(root->bus->self))
+ flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
+ if (pcie_aspm_enabled())
+ flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
+ OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
+ if (pci_msi_enabled())
+ flags |= OSC_MSI_SUPPORT;
+ if (flags != base_flags)
+ pci_acpi_osc_support(device->handle, flags);
+
end:
if (result) {
if (!list_empty(&root->node))