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mmc: core: Handle both poweroff notification types for eMMC 

Depending on the context of the operation while powering down the card,
either POWER_OFF_NOTIFY_SHORT or POWER_OFF_NOTIFY_LONG will be used. In
suspend context a short timeout is preferred while a long timeout would
be acceptable in a shutdown/hibernation context.

We add a new parameter to the mmc_suspend function so we can provide an
indication of what notification type to use.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Ulf Hansson 2013-06-10 17:03:43 +02:00 committed by Chris Ball
parent 5992e78697
commit 03d071fc8d
1 changed files with 12 additions and 5 deletions
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17
drivers/mmc/core/mmc.c
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@ -1464,12 +1464,11 @@ static void mmc_detect(struct mmc_host *host)
} }
} }
/* static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{ {
int err = 0; int err = 0;
unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT :
EXT_CSD_POWER_OFF_LONG;
BUG_ON(!host); BUG_ON(!host);
BUG_ON(!host->card); BUG_ON(!host->card);
@ -1487,7 +1486,7 @@ static int mmc_suspend(struct mmc_host *host)
goto out; goto out;
if (mmc_can_poweroff_notify(host->card)) if (mmc_can_poweroff_notify(host->card))
err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); err = mmc_poweroff_notify(host->card, notify_type);
else if (mmc_can_sleep(host->card)) else if (mmc_can_sleep(host->card))
err = mmc_sleep(host); err = mmc_sleep(host);
else if (!mmc_host_is_spi(host)) else if (!mmc_host_is_spi(host))
@ -1501,6 +1500,14 @@ out:
return err; return err;
} }
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
return _mmc_suspend(host, true);
}
/* /*
* Resume callback from host. * Resume callback from host.
* *