diff options
| author | Jarkko Lavinen <jarkko.lavinen@nokia.com> | 2009-09-22 16:44:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:33 -0700 |
| commit | b1ebe38456f7fe61a88af2844361e763ac6ea5ae (patch) | |
| tree | b45a2e7afe4f1f6d66d6d38dd1627fa2d6c0e7c7 /drivers/mmc/core/core.c | |
| parent | eae1aeeed852aae37621b82a9e7f6c05096a18fd (diff) | |
mmc: add mmc card sleep and awake support
Add support for the new MMC command SLEEP_AWAKE.
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Philip Langdale <philipl@overt.org>
Cc: "Madhusudhan" <madhu.cr@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mmc/core/core.c')
| -rw-r--r-- | drivers/mmc/core/core.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index be1fc013fbe..828e60ea528 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1185,6 +1185,46 @@ void mmc_power_restore_host(struct mmc_host *host) } EXPORT_SYMBOL(mmc_power_restore_host); +int mmc_card_awake(struct mmc_host *host) +{ + int err = -ENOSYS; + + mmc_bus_get(host); + + if (host->bus_ops && !host->bus_dead && host->bus_ops->awake) + err = host->bus_ops->awake(host); + + mmc_bus_put(host); + + return err; +} +EXPORT_SYMBOL(mmc_card_awake); + +int mmc_card_sleep(struct mmc_host *host) +{ + int err = -ENOSYS; + + mmc_bus_get(host); + + if (host->bus_ops && !host->bus_dead && host->bus_ops->awake) + err = host->bus_ops->sleep(host); + + mmc_bus_put(host); + + return err; +} +EXPORT_SYMBOL(mmc_card_sleep); + +int mmc_card_can_sleep(struct mmc_host *host) +{ + struct mmc_card *card = host->card; + + if (card && mmc_card_mmc(card) && card->ext_csd.rev >= 3) + return 1; + return 0; +} +EXPORT_SYMBOL(mmc_card_can_sleep); + #ifdef CONFIG_PM /** |