imagis_i2c_read_reg
error = imagis_i2c_read_reg(ts, ts->tdata->interrupt_msg_cmd, &intr_message);
error = imagis_i2c_read_reg(ts,
error = imagis_i2c_read_reg(ts,
error = imagis_i2c_read_reg(ts, ts->tdata->whoami_cmd, &chip_id);