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mmc: sdhci: Implement SDHCI card detect

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Card detect function implemented for SDHCI framework.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
T Karthik Reddy 2019-06-25 13:39:04 +02:00 committed by Peng Fan
parent 451931ea70
commit da18c62b6e
1 changed files with 32 additions and 0 deletions
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32
drivers/mmc/sdhci.c
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@ -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_NONREMOVABLE)
return 1;
/* If polling, assume that the card is always present. */
if (mmc->cfg->host_caps & MMC_CAP_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