drm/radeon/kms: handle vblanks properly with dpms on

avivo chips

Copied from pre-avivo code.

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

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 7c489d1b351..89ac43881be 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -241,6 +241,7 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
 {
         struct drm_device *dev = crtc->dev;
         struct radeon_device *rdev = dev->dev_private;
+        struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 
         switch (mode) {
         case DRM_MODE_DPMS_ON:
@@ -248,20 +249,19 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
                 if (ASIC_IS_DCE3(rdev))
                         atombios_enable_crtc_memreq(crtc, 1);
                 atombios_blank_crtc(crtc, 0);
+                drm_vblank_post_modeset(dev, radeon_crtc->crtc_id);
+                radeon_crtc_load_lut(crtc);
                 break;
         case DRM_MODE_DPMS_STANDBY:
         case DRM_MODE_DPMS_SUSPEND:
         case DRM_MODE_DPMS_OFF:
+                drm_vblank_pre_modeset(dev, radeon_crtc->crtc_id);
                 atombios_blank_crtc(crtc, 1);
                 if (ASIC_IS_DCE3(rdev))
                         atombios_enable_crtc_memreq(crtc, 0);
                 atombios_enable_crtc(crtc, 0);
                 break;
         }
-
-        if (mode != DRM_MODE_DPMS_OFF) {
-                radeon_crtc_load_lut(crtc);
-        }
 }
 
 static void