drm/radeon/kms: add support for msi

[safe/jmp/linux-2.6] / drivers / gpu / drm / radeon / radeon_irq_kms.c

diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 8e0a875..a0fe623 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -92,6 +92,13 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
        if (r) {
                return r;
        }
+       /* enable msi */
+       rdev->msi_enabled = 0;
+       if (rdev->family >= CHIP_RV380) {
+               int ret = pci_enable_msi(rdev->pdev);
+               if (!ret)
+                       rdev->msi_enabled = 1;
+       }
        drm_irq_install(rdev->ddev);
        rdev->irq.installed = true;
        DRM_INFO("radeon: irq initialized.\n");
@@ -103,5 +110,7 @@ void radeon_irq_kms_fini(struct radeon_device *rdev)
        if (rdev->irq.installed) {
                rdev->irq.installed = false;
                drm_irq_uninstall(rdev->ddev);
+               if (rdev->msi_enabled)
+                       pci_disable_msi(rdev->pdev);
        }
 }