Commit 1c3be369 authored by Russell King's avatar Russell King
Browse files

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: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 92b97f0a

drivers/mmc/host/mmci.c

+12 −0
Original line number Diff line number Diff line
@@ -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);