pvr2_ctrl_get_valname
int pvr2_ctrl_get_valname(struct pvr2_ctrl *,int,char *,unsigned int,
pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
pvr2_ctrl_get_valname(cptr, val,
ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw, vm->id),