CH7006_FFILTER
ch7006_load_reg(client, state, CH7006_FFILTER);
regs[CH7006_FFILTER] = bitf(CH7006_FFILTER_TEXT, flicker) |
ch7006_load_reg(client, state, CH7006_FFILTER);
ch7006_save_reg(client, state, CH7006_FFILTER);
state->regs[CH7006_FFILTER] = (state->regs[CH7006_FFILTER] & 0xf0) |
(state->regs[CH7006_FFILTER] & 0x0c) >> 2 |
(state->regs[CH7006_FFILTER] & 0x03) << 2;