Check for board-specific card detect each time an MMC/SD device is
initialized. If card detection is not implemented, this code behaves as
before and continues assuming a card is present. If no card is detected,
has_init is reset for the MMC/SD device (to force initialization next
time) and an error is returned.
Signed-off-by: Thierry Reding <thierry.red...@avionic-design.de>
---
drivers/mmc/mmc.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 37ce6e8..d18c095 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1191,6 +1191,15 @@ block_dev_desc_t *mmc_get_dev(int dev)
int mmc_init(struct mmc *mmc)
{
int err, retry = 3;
+ u8 card_detect = 0;
+
+ if (board_mmc_getcd(&card_detect, mmc) == 0) {
+ if (!card_detect) {
+ mmc->has_init = 0;
+ printf("MMC: no card present\n");
+ return NO_CARD_ERR;
+ }
+ }
if (mmc->has_init)
return 0;
--
1.7.7.3
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