drm/i915: assert that the IBX port transcoder select w/a is implemented

Let's be a bit more paranoid here.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0161d94..5e76031 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1232,6 +1232,9 @@ static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
        WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
             "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
             reg, pipe_name(pipe));
+
+       WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_PIPE_B_SELECT),
+            "IBX PCH dp port still using transcoder B\n");
 }
 
 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
@@ -1241,6 +1244,9 @@ static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
        WARN(hdmi_pipe_enabled(dev_priv, val, pipe),
             "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
             reg, pipe_name(pipe));
+
+       WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_PIPE_B_SELECT),
+            "IBX PCH hdmi port still using transcoder B\n");
 }
 
 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,