R92C_LEDCFG1
reg = rtwn_read_1(sc, R92C_LEDCFG1) & R92E_LEDSON;
rtwn_write_1(sc, R92C_LEDCFG1, reg |
reg = rtwn_read_1(sc, R92C_LEDCFG1) &
rtwn_write_1(sc, R92C_LEDCFG1, reg);