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Merge branch 'topic/huang-d3cold-v7' into next

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* topic/huang-d3cold-v7:
  PCI/PM: add PCIe runtime D3cold support
  PCI: do not call pci_set_power_state with PCI_D3cold
  PCI/PM: add runtime PM support to PCIe port
  ACPI/PM: specify lowest allowed state for device sleep state
This commit is contained in:
Bjorn Helgaas
2012-06-23 11:59:43 -06:00
parent e5028b52e4 448bd857d4
commit 35e7f73c32
12 changed files with 271 additions and 29 deletions
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22
drivers/pci/pci-acpi.c
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@@ -48,6 +48,12 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context)
if (event != ACPI_NOTIFY_DEVICE_WAKE || !pci_dev)
return;
if (pci_dev->current_state == PCI_D3cold) {
pci_wakeup_event(pci_dev);
pm_runtime_resume(&pci_dev->dev);
return;
}
if (!pci_dev->pm_cap || !pci_dev->pme_support
|| pci_check_pme_status(pci_dev)) {
if (pci_dev->pme_poll)
@@ -201,9 +207,13 @@ phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle)
static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
{
int acpi_state;
int acpi_state, d_max;
acpi_state = acpi_pm_device_sleep_state(&pdev->dev, NULL);
if (pdev->no_d3cold)
d_max = ACPI_STATE_D3_HOT;
else
d_max = ACPI_STATE_D3_COLD;
acpi_state = acpi_pm_device_sleep_state(&pdev->dev, NULL, d_max);
if (acpi_state < 0)
return PCI_POWER_ERROR;
@@ -310,7 +320,13 @@ static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
{
if (dev->pme_interrupt)
/*
* Per PCI Express Base Specification Revision 2.0 section
* 5.3.3.2 Link Wakeup, platform support is needed for D3cold
* waking up to power on the main link even if there is PME
* support for D3cold
*/
if (dev->pme_interrupt && !dev->runtime_d3cold)
return 0;
if (!acpi_pm_device_run_wake(&dev->dev, enable))