Originally Posted by dj_steve

@bdogg64

just found some code here you might find of interest it has to do with pageflipping in the omap fb driver

Code:

Index: linux-omap-2_6_23/drivers/video/omap/omapfb_main.c
===================================================================
--- linux-omap-2_6_23.orig/drivers/video/omap/omapfb_main.c
+++ linux-omap-2_6_23/drivers/video/omap/omapfb_main.c
@@ -168,7 +168,7 @@ static int ctrl_init(struct omapfb_devic
                /* 12 bpp is packed in 16 bits */
                if (bpp == 12)
                       bpp = 16;
-               def_size = def_vxres * def_vyres * bpp / 8;
+               def_size = def_vxres * def_vyres * 2 * bpp / 8;
                fbdev->mem_desc.region_cnt = 1;
                fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
        }
@@ -415,6 +415,7 @@ static void set_fb_fix(struct fb_info *f
        }
        fix->accel              = FB_ACCEL_OMAP1610;
        fix->line_length        = var->xres_virtual * bpp / 8;
+       fix->ypanstep           = 1;
 }

 static int set_color_mode(struct omapfb_plane_struct *plane,
@@ -1471,7 +1472,7 @@ static int fbinfo_init(struct omapfb_dev
        var->xres = def_vxres;
        var->yres = def_vyres;
        var->xres_virtual = def_vxres;
-       var->yres_virtual = def_vyres;
+       var->yres_virtual = def_vyres * 2;
        var->rotate       = def_rotate;
        var->bits_per_pixel = fbdev->panel->bpp;

its a patch i found at @ http://elinux.org/Android_on_OMAP#Pa...g_frame_buffer