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/drivers/mmc/ftsdc010_esdhc.c b/drivers/mmc/ftsdc010_esdhc.c
index 33cb5d6..f1702fe 100644
--- a/drivers/mmc/ftsdc010_esdhc.c
+++ b/drivers/mmc/ftsdc010_esdhc.c
@@ -665,6 +665,7 @@
mmc->send_cmd = ftsdc010_request;
mmc->set_ios = ftsdc010_set_ios;
mmc->init = ftsdc010_core_init;
+ mmc->getcd = NULL;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;