diff options
| author | T Karthik Reddy | 2019-06-25 13:39:04 +0200 |
|---|---|---|
| committer | Peng Fan | 2019-07-15 10:16:49 +0800 |
| commit | da18c62b6e6a46e7c9cc932e26b192d10ab1d26d (patch) | |
| tree | 4307d956f55d46972b7db2418a9af712cbedb6d3 /drivers/mmc | |
| parent | 451931ea7002c74aafeafde8893d6eb6d7b460f0 (diff) | |
mmc: sdhci: Implement SDHCI card detect
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>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/sdhci.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 4ffe74e35e0..c4e88790bc6 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_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 |