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From 4c0c9be05004d1eb674b7586216b3d93cc04531c Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Wed, 10 Apr 2013 11:13:43 +0200
Subject: [PATCH 1/3] mmc: mxs-mmc: add cd-inverted property
The card-detect GPIO is inverted on some boards. Handle such case.
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
drivers/mmc/host/mxs-mmc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 4efe302..0cdf1f6 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -72,6 +72,7 @@ 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)
@@ -96,7 +97,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
struct mxs_ssp *ssp = &host->ssp;
return !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
- BM_SSP_STATUS_CARD_DETECT);
+ BM_SSP_STATUS_CARD_DETECT)) ^ host->cd_inverted;
}
static void mxs_mmc_reset(struct mxs_mmc_host *host)
@@ -691,6 +692,8 @@ 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");
+
mmc->f_min = 400000;
mmc->f_max = 288000000;
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
--
1.8.1.5
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