提交 4c0c9be0 编写于 作者: M Marc Kleine-Budde 提交者: Chris Ball

mmc: mxs-mmc: add cd-inverted property

The card-detect GPIO is inverted on some boards. Handle such case.
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NChris Ball <cjb@laptop.org>
上级 3bffb800
...@@ -72,6 +72,7 @@ struct mxs_mmc_host { ...@@ -72,6 +72,7 @@ struct mxs_mmc_host {
int sdio_irq_en; int sdio_irq_en;
int wp_gpio; int wp_gpio;
bool wp_inverted; bool wp_inverted;
bool cd_inverted;
}; };
static int mxs_mmc_get_ro(struct mmc_host *mmc) static int mxs_mmc_get_ro(struct mmc_host *mmc)
...@@ -96,7 +97,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) ...@@ -96,7 +97,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
struct mxs_ssp *ssp = &host->ssp; struct mxs_ssp *ssp = &host->ssp;
return !(readl(ssp->base + HW_SSP_STATUS(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) static void mxs_mmc_reset(struct mxs_mmc_host *host)
...@@ -691,6 +692,8 @@ static int mxs_mmc_probe(struct platform_device *pdev) ...@@ -691,6 +692,8 @@ static int mxs_mmc_probe(struct platform_device *pdev)
if (flags & OF_GPIO_ACTIVE_LOW) if (flags & OF_GPIO_ACTIVE_LOW)
host->wp_inverted = 1; host->wp_inverted = 1;
host->cd_inverted = of_property_read_bool(np, "cd-inverted");
mmc->f_min = 400000; mmc->f_min = 400000;
mmc->f_max = 288000000; mmc->f_max = 288000000;
mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
......
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