From: T Karthik Reddy <t.karthik.re...@xilinx.com>
Card detect function implemented for SDHCI framework.
Signed-off-by: T Karthik Reddy <t.karthik.re...@xilinx.com>
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
Changes in v2:
- Used CARD_PRESENT instead of SDHCI_CARD_DETECT_PIN_LEVEL for reading
sd card presence detection.
drivers/mmc/sdhci.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 4ffe74e35e08..d66f9288dd91 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -12,6 +12,7 @@
#include <malloc.h>
#include <mmc.h>
#include <sdhci.h>
+#include <dm.h>
#if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
void *aligned_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER;
@@ -630,9 +631,40 @@ int sdhci_probe(struct udevice *dev)
return sdhci_init(mmc);
}
+int sdhci_get_cd(struct udevice *dev)
+{
+ struct mmc *mmc = mmc_get_mmc_dev(dev);
+ struct sdhci_host *host = mmc->priv;
+ int value;
+
+ /* If nonremovable, assume that the card is always present. */
+ if (mmc->cfg->host_caps & MMC_CAP_SD_NONREMOVABLE)
+ return 1;
+ /* If polling, assume that the card is always present. */
+ if (mmc->cfg->host_caps & MMC_CAP_SD_NEEDS_POLL)
+ return 1;
+
+#if CONFIG_IS_ENABLED(DM_GPIO)
+ value = dm_gpio_get_value(&host->cd_gpio);
+ if (value >= 0) {
+ if (mmc->cfg->host_caps & MMC_CAP_CD_ACTIVE_HIGH)
+ return !value;
+ else
+ return value;
+ }
+#endif
+ value = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
+ SDHCI_CARD_PRESENT);
+ if (mmc->cfg->host_caps & MMC_CAP_CD_ACTIVE_HIGH)
+ return !value;
+ else
+ return value;
+}
+
const struct dm_mmc_ops sdhci_ops = {
.send_cmd = sdhci_send_command,
.set_ios = sdhci_set_ios,
+ .get_cd = sdhci_get_cd,
#ifdef MMC_SUPPORTS_TUNING
.execute_tuning = sdhci_execute_tuning,
#endif
--
2.17.1
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