do_tuner_callback
do_tuner_callback(fe, XC2028_RESET_CLK, 1);
rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0);
rc = do_tuner_callback(fe, XC2028_I2C_FLUSH, 0);
rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);