Merge tag 'drm-intel-fixes-2013-07-22' of git://people.freedesktop.org/~danvet/drm...

[karo-tx-linux.git] / drivers / gpu / drm / i915 / intel_lvds.c

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 021e8daa022d34485583e53eeea71d7f9ba33fb5..61348eae2f0436a05f7b5d88fec4242db918655d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -109,6 +109,13 @@ static void intel_lvds_get_config(struct intel_encoder *encoder,
                flags |= DRM_MODE_FLAG_PVSYNC;
 
        pipe_config->adjusted_mode.flags |= flags;
+
+       /* gen2/3 store dither state in pfit control, needs to match */
+       if (INTEL_INFO(dev)->gen < 4) {
+               tmp = I915_READ(PFIT_CONTROL);
+
+               pipe_config->gmch_pfit.control |= tmp & PANEL_8TO6_DITHER_ENABLE;
+       }
 }
 
 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
@@ -290,14 +297,11 @@ static bool intel_lvds_compute_config(struct intel_encoder *intel_encoder,
 
                intel_pch_panel_fitting(intel_crtc, pipe_config,
                                        intel_connector->panel.fitting_mode);
-               return true;
        } else {
                intel_gmch_panel_fitting(intel_crtc, pipe_config,
                                         intel_connector->panel.fitting_mode);
-       }
 
-       drm_mode_set_crtcinfo(adjusted_mode, 0);
-       pipe_config->timings_set = true;
+       }
 
        /*
         * XXX: It would be nice to support lower refresh rates on the