drm/radeon/kms: add support for msi
Try to enable msi on chips that support it.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 8e0a875..a0fe623 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -92,6 +92,13 @@
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 @@
if (rdev->irq.installed) {
rdev->irq.installed = false;
drm_irq_uninstall(rdev->ddev);
+ if (rdev->msi_enabled)
+ pci_disable_msi(rdev->pdev);
}
}