[AGPGART] Suspend/Resume support for nVidia nForce AGP.
Based on a patch from the Ubuntu kernel.
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c
index 4c67135..b3a53e7 100644
--- a/drivers/char/agp/nvidia-agp.c
+++ b/drivers/char/agp/nvidia-agp.c
@@ -376,6 +376,31 @@
agp_put_bridge(bridge);
}
+#ifdef CONFIG_PM
+static int agp_nvidia_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ pci_save_state (pdev);
+ pci_set_power_state (pdev, 3);
+
+ return 0;
+}
+
+static int agp_nvidia_resume(struct pci_dev *pdev)
+{
+ struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
+
+ /* set power state 0 and restore PCI space */
+ pci_set_power_state (pdev, 0);
+ pci_restore_state(pdev);
+
+ /* reconfigure AGP hardware again */
+ nvidia_configure();
+
+ return 0;
+}
+#endif
+
+
static struct pci_device_id agp_nvidia_pci_table[] = {
{
.class = (PCI_CLASS_BRIDGE_HOST << 8),
@@ -403,6 +428,10 @@
.id_table = agp_nvidia_pci_table,
.probe = agp_nvidia_probe,
.remove = agp_nvidia_remove,
+#ifdef CONFIG_PM
+ .suspend = agp_nvidia_suspend,
+ .resume = agp_nvidia_resume,
+#endif
};
static int __init agp_nvidia_init(void)