On Tue, Sep 27, 2011 at 09:46:56AM +0200, Ulf Hansson wrote:
> /* The ST Micro variants has a special bit to enable SDIO */
> if (variant->sdio && host->mmc->card)
> - if (mmc_card_sdio(host->mmc->card))
> + if (mmc_card_sdio(host->mmc->card)) {
> + /*
> + * The ST Micro variants has a special bit
> + * to enable SDIO.
> + */
> datactrl |= MCI_ST_DPSM_SDIOEN;
>
> + /*
> + * The ST Micro variant for SDIO transfer sizes
> + * less then or equal to 8 bytes needs to have clock
> + * H/W flow control disabled. Since flow control is
> + * not really needed for anything that fits in the
> + * FIFO, we can disable it for any write smaller
> + * than the FIFO size.
> + */
> + if ((host->size <= variant->fifosize) &&
> + (data->flags & MMC_DATA_WRITE))
> + writel(readl(host->base + MMCICLOCK) &
> + ~variant->clkreg_enable,
> + host->base + MMCICLOCK);
> + else
> + writel(readl(host->base + MMCICLOCK) |
> + variant->clkreg_enable,
> + host->base + MMCICLOCK);
> + }
Shouldn't this also re-enable the ST hardware flow control for non-SDIO
cards?
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