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Commit bf517d6f authored by Adrian Hunter's avatar Adrian Hunter Committed by Ulf Hansson
Browse files

mmc: core: Add mmc_retune_hold_now() 



mmc_return_hold() / mmc_retune_release() are used around a group of
commands to prevent re-tuning between the commands. Re-tuning can still
happen before the first command. In some cases, re-tuning must be
prevented entirely. Add mmc_retune_hold_now() for that purpose. It is
added in preparation for CQE support where it will be used by CQE recovery.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent dc8d68bb

drivers/mmc/core/host.c

+6 −0
Original line number Diff line number Diff line
@@ -111,6 +111,12 @@ void mmc_retune_hold(struct mmc_host *host) 
	host->hold_retune += 1;

}



void mmc_retune_hold_now(struct mmc_host *host)

{

	host->retune_now = 0;

	host->hold_retune += 1;

}



void mmc_retune_release(struct mmc_host *host)

{

	if (host->hold_retune)

drivers/mmc/core/host.h

+1 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ void mmc_unregister_host_class(void); 
void mmc_retune_enable(struct mmc_host *host);

void mmc_retune_disable(struct mmc_host *host);

void mmc_retune_hold(struct mmc_host *host);

void mmc_retune_hold_now(struct mmc_host *host);

void mmc_retune_release(struct mmc_host *host);

int mmc_retune(struct mmc_host *host);

void mmc_retune_pause(struct mmc_host *host);