drm/radeon/kms: enable hpd support

This enabled interrupt driven hpd support for all
radeon chips.  Assuming the hpd pin is wired up
correctly, the driver will generate uevents on
digital monitor connect and disconnect and retrain
DP monitors automatically.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index d4f4fb1c54c7..c115f2e442eb 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -741,6 +741,8 @@ int radeon_modeset_init(struct radeon_device *rdev)
         if (!ret) {
                 return ret;
         }
+        /* initialize hpd */
+        radeon_hpd_init(rdev);
         drm_helper_initial_config(rdev->ddev);
         return 0;
 }
@@ -748,6 +750,7 @@ int radeon_modeset_init(struct radeon_device *rdev)
 void radeon_modeset_fini(struct radeon_device *rdev)
 {
         if (rdev->mode_info.mode_config_initialized) {
+                radeon_hpd_fini(rdev);
                 drm_mode_config_cleanup(rdev->ddev);
                 rdev->mode_info.mode_config_initialized = false;
         }