diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2014-09-08 23:45:46 -0700 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-09-09 14:15:42 +0200 |
| commit | 8b4efe2f58b1699a57f6c30d17345b801ab4213b (patch) | |
| tree | ab9565d51d565596b2856e200aca343ab4a06d67 /drivers/mmc/host | |
| parent | bbf0208d39121bd8873b032459cb2b5f35e14593 (diff) | |
mmc: use .multi_io_quirk on sh_mobile
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.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sh_mobile_sdhi.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index f2585b6c1414..a2e81a1ea6af 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; |