mmc: mxs-mmc: add non-removable property

Some boards have non removable cards like eMMC. Handle such case.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 0cdf1f6..c231881 100644 (file)
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -73,6 +73,7 @@ struct mxs_mmc_host {
        int                             wp_gpio;
        bool                            wp_inverted;
        bool                            cd_inverted;
+       bool                            non_removable;
 };
 
 static int mxs_mmc_get_ro(struct mmc_host *mmc)
@@ -96,8 +97,9 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
        struct mxs_mmc_host *host = mmc_priv(mmc);
        struct mxs_ssp *ssp = &host->ssp;
 
-       return !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
-                BM_SSP_STATUS_CARD_DETECT)) ^ host->cd_inverted;
+       return host->non_removable ||
+               !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
+                 BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted;
 }
 
 static void mxs_mmc_reset(struct mxs_mmc_host *host)
@@ -687,8 +689,10 @@ static int mxs_mmc_probe(struct platform_device *pdev)
                mmc->caps |= MMC_CAP_4_BIT_DATA;
        else if (bus_width == 8)
                mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+       host->non_removable = of_property_read_bool(np, "non-removable");
+       if (host->non_removable)
+               mmc->caps |= MMC_CAP_NONREMOVABLE;
        host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags);
-
        if (flags & OF_GPIO_ACTIVE_LOW)
                host->wp_inverted = 1;