Change the default .get_cd callback. Add inverted signal card detection
check.
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@xxxxxxxxx>
diff --git a/drivers/mmc/host/sdhci-of-aspeed.c b/drivers/mmc/host/sdhci-of-aspeed.c
index 8962f6664381..186559ee8fcc 100644
--- a/drivers/mmc/host/sdhci-of-aspeed.c
+++ b/drivers/mmc/host/sdhci-of-aspeed.c
@@ -143,6 +143,19 @@ static inline int aspeed_sdhci_calculate_slot(struct aspeed_sdhci *dev,
return (delta / 0x100) - 1;
}
+static int aspeed_get_cd(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+
+ int present = !!(sdhci_readl(host, SDHCI_PRESENT_STATE)
+ & SDHCI_CARD_PRESENT);
+
+ if (mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH)
+ present = !present;
+
+ return present;
+}
+
static int aspeed_sdhci_probe(struct platform_device *pdev)
{
struct sdhci_pltfm_host *pltfm_host;
@@ -183,6 +196,10 @@ static int aspeed_sdhci_probe(struct platform_device *pdev)
goto err_pltfm_free;
}
+ host->mmc_host_ops.get_cd = aspeed_get_cd;
+ if (of_property_read_bool(pdev->dev.of_node, "cd-inverted"))
+ dev_info(&pdev->dev, "aspeed: sdhci: presence signal inversion enabled\n");
+
ret = mmc_of_parse(host->mmc);
if (ret)
goto err_sdhci_add;
--
2.20.1
