CHIPCTLSIZE
if (!request_mem_region(priv->ctl_mapbase, CHIPCTLSIZE, "timb-ctl")) {
priv->ctl_membase = ioremap(priv->ctl_mapbase, CHIPCTLSIZE);
release_mem_region(priv->ctl_mapbase, CHIPCTLSIZE);
release_mem_region(priv->ctl_mapbase, CHIPCTLSIZE);