quoted

+/* image data is MSB-first, fb structure is MSB-first too */
+static inline u32 expand_color(u32 c)
+{
+	return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF;
+}
+
+/* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */

Hmn, same thing with vga16fb... Perhaps we should bring back the
fontwidth flag of 2.2 and 2.4 kernels.

Ug no. It is possible to get 12,6 bit width fonts working with vga 
interleaved planes. I got it paritally working but never got back to it.
Its in my queue of this to do. Now that I finished the display class I 
need to get around to makeing drm/fbdev work together :-)