SCI_KBD_ILLUM_STATUS
u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);