KS8995_REG_PC2
ret = ks8995_read_reg(ks, KS8995_REG_PC(port, KS8995_REG_PC2), &val);
ret = ks8995_write_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_write_reg(ks, KS8995_REG_PC(port, KS8995_REG_PC2), val);