ks8995_read_reg
err = ks8995_read_reg(ks, KS8995_REG_ID0, &id0);
err = ks8995_read_reg(ks, KS8995_REG_ID1, &id1);
err = ks8995_read_reg(ks, KS8995_REG_ID1, &ksz8864_id);
err = ks8995_read_reg(ks, KS8995_REG_ID1, &id1);
ret = ks8995_read_reg(ks, KS8995_REG_GC0, &val);
ret = ks8995_read_reg(ks, KS8995_REG_GC4, &val);
ret = ks8995_read_reg(ks, KS8995_REG_PC(port, KS8995_REG_PC2), &val);
ret = ks8995_read_reg(ks, KS8995_REG_PC(port, KS8995_REG_PC2), &val);
ret = ks8995_read_reg(ks, KS8995_REG_GC2, &val);