drm/i915: add encoder get_config function v5

[deliverable/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 36fe291172ee973b121c9bec0edefdf81f7d956c..655486099b76483bd2300744af1918d410f743bb 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -86,6 +86,31 @@ static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
        return true;
 }
 
+static void intel_lvds_get_config(struct intel_encoder *encoder,
+                                 struct intel_crtc_config *pipe_config)
+{
+       struct drm_device *dev = encoder->base.dev;
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       u32 lvds_reg, tmp, flags = 0;
+
+       if (HAS_PCH_SPLIT(dev))
+               lvds_reg = PCH_LVDS;
+       else
+               lvds_reg = LVDS;
+
+       tmp = I915_READ(lvds_reg);
+       if (tmp & LVDS_HSYNC_POLARITY)
+               flags |= DRM_MODE_FLAG_NHSYNC;
+       else
+               flags |= DRM_MODE_FLAG_PHSYNC;
+       if (tmp & LVDS_VSYNC_POLARITY)
+               flags |= DRM_MODE_FLAG_NVSYNC;
+       else
+               flags |= DRM_MODE_FLAG_PVSYNC;
+
+       pipe_config->adjusted_mode.flags |= flags;
+}
+
 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
  * This is an exception to the general rule that mode_set doesn't turn
  * things on.
@@ -921,6 +946,7 @@ bool intel_lvds_init(struct drm_device *dev)
        intel_encoder->compute_config = intel_lvds_compute_config;
        intel_encoder->disable = intel_disable_lvds;
        intel_encoder->get_hw_state = intel_lvds_get_hw_state;
+       intel_encoder->get_config = intel_lvds_get_config;
        intel_connector->get_hw_state = intel_connector_get_hw_state;
 
        intel_connector_attach_encoder(intel_connector, intel_encoder);