Function mmcsd_mmc_init_card

components/drivers/sdio/dev_mmc.c:613–736

}

static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host,
                                      rt_uint32_t           ocr)
{
    rt_int32_t err;
    rt_uint32_t resp[4];
    rt_uint32_t rocr = 0;
    rt_uint8_t *ext_csd = RT_NULL;
    struct rt_mmcsd_card *card = RT_NULL;

    mmcsd_go_idle(host);

    /* The extra bit indicates that we support high capacity */
    err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
    if (err)
        goto err;

    if (controller_is_spi(host))
    {
        err = mmcsd_spi_use_crc(host, 1);
        if (err)
            goto err1;
    }

    if (controller_is_spi(host))
        err = mmcsd_get_cid(host, resp);
    else
        err = mmcsd_all_get_cid(host, resp);
    if (err)
        goto err;

    card = rt_malloc(sizeof(struct rt_mmcsd_card));
    if (!card)
    {
        LOG_E("malloc card failed!");
        err = -RT_ENOMEM;
        goto err;
    }
    rt_memset(card, 0, sizeof(struct rt_mmcsd_card));

    card->card_type = CARD_TYPE_MMC;
    card->host = host;
    card->rca = 1;
    rt_memcpy(card->resp_cid, resp, sizeof(card->resp_cid));

    /*
     * For native busses:  get card RCA and quit open drain mode.
     */
    if (!controller_is_spi(host))
    {
        err = mmc_set_card_addr(host, card->rca);
        if (err)
            goto err1;

        mmcsd_set_bus_mode(host, MMCSD_BUSMODE_PUSHPULL);
    }

    err = mmcsd_get_csd(card, card->resp_csd);
    if (err)