ocfb_writereg
ocfb_writereg(fbdev, OCFB_CTRL, 0);
ocfb_writereg(fbdev, OCFB_VBARA, fbdev->fb_phys);
ocfb_writereg(fbdev, OCFB_VBARA, fbdev->fb_phys);
ocfb_writereg(fbdev, OCFB_HTIM, (var->hsync_len - 1) << 24 |
ocfb_writereg(fbdev, OCFB_VTIM, (var->vsync_len - 1) << 24 |
ocfb_writereg(fbdev, OCFB_HVLEN, (hlen - 1) << 16 | (vlen - 1));
ocfb_writereg(fbdev, OCFB_CTRL, (OCFB_CTRL_VEN | bpp_config));
ocfb_writereg(fbdev, OCFB_PALETTE + regno, color);
ocfb_writereg(fbdev, OCFB_CTRL, 0);