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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>
This commit is contained in:
Marc Kleine-Budde 2013-04-10 11:13:43 +02:00 committed by Chris Ball
parent 3bffb800b9
commit 4c0c9be050
1 changed files with 4 additions and 1 deletions
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5
drivers/mmc/host/mxs-mmc.c
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@ -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;