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

[Alex Deucher]

From: Alex Deucher <alexdeucher@xxxxxxxxx>

commit 500b758725314ab1b5316eb0caa5b0fa26740e6b upstream.

avivo chips

Copied from pre-avivo code.

Signed-off-by: Alex Deucher <alexdeucher@xxxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/gpu/drm/radeon/atombios_crtc.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- 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 
 {
        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 
                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


After reverting this patch, modesetting works again. It's a Radeon HD3650 AGP 
(RV635) on a Tyan Tiger K8W S2875ANRF (AMD 8151 AGP tunnel). Display is an 
Acer X223W connected on DVI.


regards,
  Johannes
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