aplsmc_read_key
int aplsmc_read_key(struct aplsmc_softc *, uint32_t, void *, size_t);
error = aplsmc_read_key(sc, SMC_KEY("CLKM"), &data, SMC_CLKM_LEN);
aplsmc_read_key(sc, 'PSTR', &flt, sizeof(flt));
error = aplsmc_read_key(sc, key, &ui8, sizeof(ui8));
error = aplsmc_read_key(sc, key, &ui16, sizeof(ui16));
error = aplsmc_read_key(sc, key, &flt, sizeof(flt));
error = aplsmc_read_key(sc, SMC_KEY("CLKM"), &data, SMC_CLKM_LEN);
error = aplsmc_read_key(sc, SMC_KEY("CLKM"), &data, SMC_CLKM_LEN);
error = aplsmc_read_key(sc, SMC_KEY("CH0I"), &ch0i, sizeof(ch0i));
error = aplsmc_read_key(sc, SMC_KEY("CH0C"), &ch0c, sizeof(ch0c));
error = aplsmc_read_key(sc, SMC_KEY("CHWA"), &chwa, sizeof(chwa));
error = aplsmc_read_key(sc, SMC_KEY("CHLS"),