Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
[pandora-kernel.git] / drivers / mmc / host / mmci.c
index 4602771..50b5f99 100644 (file)
@@ -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;
@@ -1156,10 +1160,14 @@ static int __devinit mmci_probe(struct amba_device *dev,
                goto host_free;
        }
 
-       ret = clk_enable(host->clk);
+       ret = clk_prepare(host->clk);
        if (ret)
                goto clk_free;
 
+       ret = clk_enable(host->clk);
+       if (ret)
+               goto clk_unprep;
+
        host->plat = plat;
        host->variant = variant;
        host->mclk = clk_get_rate(host->clk);
@@ -1327,6 +1335,8 @@ static int __devinit mmci_probe(struct amba_device *dev,
 
        mmci_dma_setup(host);
 
+       pm_runtime_put(&dev->dev);
+
        mmc_add_host(mmc);
 
        return 0;
@@ -1345,6 +1355,8 @@ static int __devinit mmci_probe(struct amba_device *dev,
        iounmap(host->base);
  clk_disable:
        clk_disable(host->clk);
+ clk_unprep:
+       clk_unprepare(host->clk);
  clk_free:
        clk_put(host->clk);
  host_free:
@@ -1364,6 +1376,12 @@ 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);
@@ -1386,6 +1404,7 @@ static int __devexit mmci_remove(struct amba_device *dev)
 
                iounmap(host->base);
                clk_disable(host->clk);
+               clk_unprepare(host->clk);
                clk_put(host->clk);
 
                if (host->vcc)