diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-08-14 09:17:05 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-09-22 16:21:42 +0100 |
| commit | 1c3be369c5fcd36c5d3841ca5d97d80ad34e76dd (patch) | |
| tree | fe9bc8210743e71983151ea8a79f64a541dcce15 /drivers | |
| parent | 92b97f0aaccbf9de4a29696e6253bf82e8850d1d (diff) | |
PM: add runtime PM support to MMCI
Add runtime PM support to the MMCI primecell driver, making use of
the core primecell bus runtime PM support.
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/mmci.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 56e9a416826..5e142b7f5ec 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -29,6 +29,7 @@ #include <linux/dmaengine.h> #include <linux/dma-mapping.h> #include <linux/amba/mmci.h> +#include <linux/pm_runtime.h> #include <asm/div64.h> #include <asm/io.h> @@ -170,6 +171,7 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq) * back into the driver... */ spin_unlock(&host->lock); + pm_runtime_put(mmc_dev(host->mmc)); mmc_request_done(host->mmc, mrq); spin_lock(&host->lock); } @@ -984,6 +986,8 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq) return; } + pm_runtime_get_sync(mmc_dev(mmc)); + spin_lock_irqsave(&host->lock, flags); host->mrq = mrq; @@ -1327,6 +1331,8 @@ static int __devinit mmci_probe(struct amba_device *dev, mmci_dma_setup(host); + pm_runtime_put(&dev->dev); + mmc_add_host(mmc); return 0; @@ -1364,6 +1370,12 @@ static int __devexit mmci_remove(struct amba_device *dev) if (mmc) { struct mmci_host *host = mmc_priv(mmc); + /* + * Undo pm_runtime_put() in probe. We use the _sync + * version here so that we can access the primecell. + */ + pm_runtime_get_sync(&dev->dev); + mmc_remove_host(mmc); writel(0, host->base + MMCIMASK0); |