VCNL4040_PS_CONF2_PS_IT
ret = FIELD_GET(VCNL4040_PS_CONF2_PS_IT, ret);
regval = (ret & ~VCNL4040_PS_CONF2_PS_IT) |
FIELD_PREP(VCNL4040_PS_CONF2_PS_IT, index);
it = FIELD_GET(VCNL4040_PS_CONF2_PS_IT, ret);
it = FIELD_GET(VCNL4040_PS_CONF2_PS_IT, ret);