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| author | Ohad Ben-Cohen <ohad@wizery.com> | 2010-10-02 13:54:11 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2010-10-23 21:11:18 +0800 |
| commit | 40bba0c1ca83a370f749c8bc9afda71cf79ebd91 (patch) | |
| tree | 1d2725b031284717468b22b90df59d5939506187 /drivers/mmc/core/sdio.c | |
| parent | 81968561bd69536c82be7ee654b04c68cd3e1746 (diff) | |
| download | linux-40bba0c1ca83a370f749c8bc9afda71cf79ebd91.tar.gz linux-40bba0c1ca83a370f749c8bc9afda71cf79ebd91.tar.bz2 linux-40bba0c1ca83a370f749c8bc9afda71cf79ebd91.zip | |
mmc: sdio: enable runtime PM for SDIO functions
Enable runtime PM for SDIO functions.
SDIO functions are initialized with a disabled runtime PM state,
and are set active (and their usage count is incremented)
only before potential drivers are probed.
SDIO function drivers that support runtime PM should call
pm_runtime_put_noidle() in their probe routine, and
pm_runtime_get_noresume() in their remove routine (very
similarly to PCI drivers).
In case a matching driver does not support runtime PM, power will
always be kept high (since the usage count is positive).
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Tested-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core/sdio.c')
| -rw-r--r-- | drivers/mmc/core/sdio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 0dbd6fe66660..85561dde4c9d 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -734,6 +734,11 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr) err = sdio_init_func(host->card, i + 1); if (err) goto remove; + + /* + * Enable Runtime PM for this func + */ + pm_runtime_enable(&card->sdio_func[i]->dev); } mmc_release_host(host); |