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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: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2017-08-10 15:08:06 +03:00 committed by Ulf Hansson
parent dc8d68bb6c
commit bf517d6fec
2 changed files with 7 additions and 0 deletions
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6
drivers/mmc/core/host.c
View File

@ -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)

1
drivers/mmc/core/host.h
View File

@ -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);