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Commit dc0ecfef authored by Johan Rudholm's avatar Johan Rudholm Committed by Ulf Hansson
Browse files

mmc: sd: add reset bus_ops callback 



Enable power cycle and re-initialization of SD cards via the reset
bus_ops. Power cycling a buggy SD card sometimes helps it get back on
track.

Signed-off-by: default avatarJohan Rudholm <johanru@axis.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent f855a371

drivers/mmc/core/sd.c

+7 −0
Original line number Diff line number Diff line
@@ -1197,6 +1197,12 @@ static int mmc_sd_power_restore(struct mmc_host *host) 
	return ret;

}



static int mmc_sd_reset(struct mmc_host *host)

{

	mmc_power_cycle(host, host->card->ocr);

	return mmc_sd_power_restore(host);

}



static const struct mmc_bus_ops mmc_sd_ops = {

	.remove = mmc_sd_remove,

	.detect = mmc_sd_detect,
@@ -1207,6 +1213,7 @@ static const struct mmc_bus_ops mmc_sd_ops = { 
	.power_restore = mmc_sd_power_restore,

	.alive = mmc_sd_alive,

	.shutdown = mmc_sd_suspend,

	.reset = mmc_sd_reset,

};



/*