On some platforms (e.g. AP4EVB) the card detect pin of a slot is not directly connected to the sdhi hardware, so that polling needs to be used with tmio_mmc and card detection is handled in the platform code. This patch allows to set tmio_mmc capabilities (to pass the MMC_CAP_NEEDS_POLL flag) and exposes a get_cd hook for that purpose.
Signed-off-by: Arnd Hannemann <[email protected]> --- drivers/mfd/sh_mobile_sdhi.c | 13 +++++++++++++ include/linux/mfd/sh_mobile_sdhi.h | 2 ++ 2 files changed, 15 insertions(+), 0 deletions(-) diff --git a/drivers/mfd/sh_mobile_sdhi.c b/drivers/mfd/sh_mobile_sdhi.c index cd16459..7c23630 100644 --- a/drivers/mfd/sh_mobile_sdhi.c +++ b/drivers/mfd/sh_mobile_sdhi.c @@ -65,6 +65,17 @@ static void sh_mobile_sdhi_set_pwr(struct platform_device *tmio, int state) p->set_pwr(pdev, state); } +static int sh_mobile_sdhi_get_cd(struct platform_device *tmio) +{ + struct platform_device *pdev = to_platform_device(tmio->dev.parent); + struct sh_mobile_sdhi_info *p = pdev->dev.platform_data; + + if (p && p->get_cd) + return p->get_cd(pdev); + else + return -ENOSYS; +} + static int __init sh_mobile_sdhi_probe(struct platform_device *pdev) { struct sh_mobile_sdhi *priv; @@ -106,10 +117,12 @@ static int __init sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data->hclk = clk_get_rate(priv->clk); mmc_data->set_pwr = sh_mobile_sdhi_set_pwr; + mmc_data->get_cd = sh_mobile_sdhi_get_cd; mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED; if (p) { mmc_data->flags = p->tmio_flags; mmc_data->ocr_mask = p->tmio_ocr_mask; + mmc_data->capabilities |= p->tmio_caps; } if (p && p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) { diff --git a/include/linux/mfd/sh_mobile_sdhi.h b/include/linux/mfd/sh_mobile_sdhi.h index 4906780..c981b95 100644 --- a/include/linux/mfd/sh_mobile_sdhi.h +++ b/include/linux/mfd/sh_mobile_sdhi.h @@ -7,8 +7,10 @@ struct sh_mobile_sdhi_info { int dma_slave_tx; int dma_slave_rx; unsigned long tmio_flags; + unsigned long tmio_caps; u32 tmio_ocr_mask; /* available MMC voltages */ void (*set_pwr)(struct platform_device *pdev, int state); + int (*get_cd)(struct platform_device *pdev); }; #endif /* __SH_MOBILE_SDHI_H__ */ -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
