Revert "Simplify the mode_valid function"

This reverts commit fab58e111b6655602b4f739260a01247ff478f35.

1 files changed, 29 insertions, 2 deletions

diff --git a/src/lx_output.c b/src/lx_output.c
index 17634d4..cd1809b 100644
--- a/src/lx_output.c
+++ b/src/lx_output.c
@@ -152,8 +152,35 @@ lx_output_restore(xf86OutputPtr output)
 static int
 lx_output_mode_valid(xf86OutputPtr output, DisplayModePtr pMode)
 {
-    /* FIXME: Mode validation code should be placed here for the modes
-     * that geode can not support */
+    ScrnInfoPtr pScrni = output->scrn;
+    GeodeRec *pGeode = GEODEPTR(pScrni);
+
+    /* DCON Panel specific resolution - OLPC's one */
+    if (pGeode->Output & OUTPUT_DCON) {
+        if (pGeode->panelMode->HDisplay == 1200 &&
+            pGeode->panelMode->VDisplay == 900)
+            return MODE_OK;
+    }
+
+    if ((pGeode->Output & OUTPUT_PANEL) &&
+        gfx_is_panel_mode_supported(pGeode->panelMode->HDisplay,
+                                    pGeode->panelMode->VDisplay,
+                                    pMode->HDisplay,
+                                    pMode->VDisplay,
+                                    pScrni->bitsPerPixel) != -1) {
+
+        return MODE_OK;
+    }
+
+    if (gfx_is_display_mode_supported(pMode->HDisplay,
+                                      pMode->VDisplay,
+                                      pScrni->bitsPerPixel,
+                                      GeodeGetRefreshRate(pMode)) != -1) {
+        return MODE_OK;
+    }
+
+    if (pMode->type & (M_T_DRIVER | M_T_PREFERRED))
+        return MODE_OK;
 
     return MODE_OK;
 }