mmc: mxs: use standard flag for cd inverted

We have a MMC_CAP2_CD_ACTIVE_HIGH flag, so use it rather than a custom
driver specific flag.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/mxs-mmc.c

@@ -71,7 +71,6 @@ struct mxs_mmc_host {
 	int				sdio_irq_en;
 	int				wp_gpio;
 	bool				wp_inverted;
-	bool				cd_inverted;
 };
 
 static int mxs_mmc_get_ro(struct mmc_host *mmc)
@@ -94,9 +93,15 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
 {
 	struct mxs_mmc_host *host = mmc_priv(mmc);
 	struct mxs_ssp *ssp = &host->ssp;
+	int present;
 
-	return !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
-		  BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted;
+	present = !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
+			BM_SSP_STATUS_CARD_DETECT);
+
+	if (mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH)
+		present = !present;
+
+	return present;
 }
 
 static int mxs_mmc_reset(struct mxs_mmc_host *host)
@@ -658,7 +663,8 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 	if (flags & OF_GPIO_ACTIVE_LOW)
 		host->wp_inverted = 1;
 
-	host->cd_inverted = of_property_read_bool(np, "cd-inverted");
+	if (of_property_read_bool(np, "cd-inverted"))
+		mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
 
 	mmc->f_min = 400000;
 	mmc->f_max = 288000000;