LCOM1920-T5G03

int (mouse_read_data)(uint8_t *data) {

    int ret;

    if ((ret = mouse_issue_cmd(READ_DATA))) return ret;

    if ((ret = mouse_read_byte(data))) return ret;

    return SUCCESS;

}

int (mouse_issue_cmd)(uint32_t cmd) {

    int ret;

    uint8_t ack = 0;

    while (ack != ACK_ERROR) {

        if ((ret = kbc_issue_cmd(MOUSE_WRITE_B))) return ret;

        if ((ret = kbc_issue_arg(cmd))) return ret;

        if ((ret = mouse_read_byte(&ack))) return ret;

        if (ack == ACK_OK) return SUCCESS;

        tickdelay(micros_to_ticks(DELAY));

    }

    return INVALID_COMMAND;

}

int (mouse_read_byte)(uint8_t *byte) {

    int ret = 0;

    uint8_t stat;

    for(int i = 0; i < KBC_NUM_TRIES; ++i){

        if((ret = util_sys_inb(STATUS_REG, &stat))) return ret;

        if((stat&OUT_BUF_FUL) && (stat&AUX_MOUSE)) {

            if(stat & (PARITY_ERROR | TIME_OUT_REC)) return OTHER_ERROR;

            if((ret = util_sys_inb(OUTPUT_BUF, byte))) return ret;

            else return SUCCESS;

        }

        tickdelay(micros_to_ticks(DELAY));

    }

    return TIMEOUT_ERROR;

}