mmc: Implement card detection.
Check for 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.reding@avionic-design.de>
Tested-by: Jason Liu <jason.hui@linaro.org>
diff --git a/include/mmc.h b/include/mmc.h
index a850174..8744604 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -302,6 +302,7 @@
struct mmc_cmd *cmd, struct mmc_data *data);
void (*set_ios)(struct mmc *mmc);
int (*init)(struct mmc *mmc);
+ int (*getcd)(struct mmc *mmc);
uint b_max;
};
@@ -316,6 +317,7 @@
int get_mmc_num(void);
int board_mmc_getcd(struct mmc *mmc);
int mmc_switch_part(int dev_num, unsigned int part_num);
+int mmc_getcd(struct mmc *mmc);
#ifdef CONFIG_GENERIC_MMC
int atmel_mci_init(void *regs);