On 3 September 2014 04:09, Kuninori Morimoto
<kuninori.morimoto...@gmail.com> wrote:
> From: Kuninori Morimoto <kuninori.morimoto...@renesas.com>
>
> Now, sh_mobile_sdhi can use .multi_io_quirk callback
> instead of MMC_CAP2_NO_MULTI_READ flags.
> let's use it.
>
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto...@renesas.com>
Thanks! Applied for next!
Kind regards
Uffe
> ---
> v2 -> v3
>
> - blk_size_workaround -> multi_io_quirk
>
> drivers/mmc/host/sh_mobile_sdhi.c | 20 +++++++++++++++++++-
> 1 file changed, 19 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sh_mobile_sdhi.c
> b/drivers/mmc/host/sh_mobile_sdhi.c
> index f2585b6..a2e81a1 100644
> --- a/drivers/mmc/host/sh_mobile_sdhi.c
> +++ b/drivers/mmc/host/sh_mobile_sdhi.c
> @@ -58,7 +58,6 @@ static const struct sh_mobile_sdhi_of_data
> of_rcar_gen2_compatible = {
> .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE
> |
> TMIO_MMC_CLK_ACTUAL,
> .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
> - .capabilities2 = MMC_CAP2_NO_MULTI_READ,
> .dma_rx_offset = 0x2000,
> };
>
> @@ -139,6 +138,24 @@ static int sh_mobile_sdhi_write16_hook(struct
> tmio_mmc_host *host, int addr)
> return 0;
> }
>
> +static int sh_mobile_sdhi_multi_io_quirk(struct mmc_card *card,
> + unsigned int direction, int blk_size)
> +{
> + /*
> + * In Renesas controllers, when performing a
> + * multiple block read of one or two blocks,
> + * depending on the timing with which the
> + * response register is read, the response
> + * value may not be read properly.
> + * Use single block read for this HW bug
> + */
> + if ((direction == MMC_DATA_READ) &&
> + blk_size == 2)
> + return 1;
> +
> + return blk_size;
> +}
> +
> static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev)
> {
> mmc_detect_change(platform_get_drvdata(pdev), msecs_to_jiffies(100));
> @@ -194,6 +211,7 @@ static int sh_mobile_sdhi_probe(struct platform_device
> *pdev)
> mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
> mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
> mmc_data->write16_hook = sh_mobile_sdhi_write16_hook;
> + mmc_data->multi_io_quirk = sh_mobile_sdhi_multi_io_quirk;
> if (p) {
> mmc_data->flags = p->tmio_flags;
> mmc_data->ocr_mask = p->tmio_ocr_mask;
> --
> 1.7.9.5
>
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