agp/sis: Suspend support for SiS AGP

Tested on M650 chipset

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c
index aaa1883f076c..6cf54fe60207 100644
--- a/drivers/char/agp/sis-agp.c
+++ b/drivers/char/agp/sis-agp.c
@@ -214,6 +214,26 @@ static void __devexit agp_sis_remove(struct pci_dev *pdev)
         agp_put_bridge(bridge);
 }
 
+#ifdef CONFIG_PM
+
+static int agp_sis_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+        pci_save_state(pdev);
+        pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+        return 0;
+}
+
+static int agp_sis_resume(struct pci_dev *pdev)
+{
+        pci_set_power_state(pdev, PCI_D0);
+        pci_restore_state(pdev);
+
+        return sis_driver.configure();
+}
+
+#endif /* CONFIG_PM */
+
 static struct pci_device_id agp_sis_pci_table[] = {
         {
                 .class          = (PCI_CLASS_BRIDGE_HOST << 8),
@@ -393,6 +413,10 @@ static struct pci_driver agp_sis_pci_driver = {
         .id_table       = agp_sis_pci_table,
         .probe          = agp_sis_probe,
         .remove         = agp_sis_remove,
+#ifdef CONFIG_PM
+        .suspend        = agp_sis_suspend,
+        .resume         = agp_sis_resume,
+#endif
 };
 
 static int __init agp_sis_init(void)