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path: root/drivers/pci/pci-acpi.c
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Diffstat (limited to 'drivers/pci/pci-acpi.c')
-rw-r--r--drivers/pci/pci-acpi.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 8eb599708de8..a0d43ea872df 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -253,6 +253,24 @@ static int acpi_pci_choose_state(struct pci_dev *pdev, pm_message_t state)
return -ENODEV;
}
+static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+{
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+ static int state_conv[] = {
+ [0] = 0,
+ [1] = 1,
+ [2] = 2,
+ [3] = 3,
+ [4] = 3
+ };
+ int acpi_state = state_conv[(int __force) state];
+
+ if (!handle)
+ return -ENODEV;
+ return acpi_bus_set_power(handle, acpi_state);
+}
+
+
/* ACPI bus type */
static int pci_acpi_find_device(struct device *dev, acpi_handle *handle)
{
@@ -300,6 +318,7 @@ static int __init pci_acpi_init(void)
if (ret)
return 0;
platform_pci_choose_state = acpi_pci_choose_state;
+ platform_pci_set_power_state = acpi_pci_set_power_state;
return 0;
}
arch_initcall(pci_acpi_init);