gma500: Read the GCT panel type information for Medfield

Missed in the original merge work
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/gma500/mrst_bios.c

@@ -28,6 +28,12 @@
 #include "psb_drm.h"
 #include "psb_drv.h"
 #include "mrst_bios.h"
+#include "mdfld_output.h"
+
+static int panel_id;
+module_param_named(panel_id, panel_id, int, 0600);
+MODULE_PARM_DESC(panel_id, "Panel Identifier");
+
 
 void mrst_get_fuse_settings(struct drm_device *dev)
 {
@@ -231,6 +237,27 @@ void mrst_get_vbt_data(struct drm_psb_private *dev_priv)
 		dev_err(dev->dev, "Unknown revision of GCT!\n");
 		vbt->size = 0;
 	}
-	/* FIXME: Need to sort out Medfield panel identifiers in future */
+	if (IS_MDFLD(dev_priv->dev)){
+		if (panel_id == GCT_DETECT) {
+			if (dev_priv->gct_data.bpi == 2) {
+				dev_info(dev->dev, "[GFX] PYR Panel Detected\n");
+				dev_priv->panel_id = PYR_CMD;
+				panel_id = PYR_CMD;
+			}
+			else if(dev_priv->gct_data.bpi == 0) {
+				dev_info(dev->dev, "[GFX] TMD Panel Detected.\n");
+				dev_priv->panel_id = TMD_VID;
+				panel_id = TMD_VID;
+			}
+			else {
+				dev_info(dev->dev, "[GFX] Default Panel (TPO)\n");
+				dev_priv->panel_id = TPO_CMD;
+				panel_id = TPO_CMD;
+			}
+		} else {
+			dev_info(dev->dev, "[GFX] Panel Parameter Passed in through cmd line\n");
+			dev_priv->panel_id = panel_id;
+		}
+	}
 }