Added use of runtime PM autosuspend feature, with a fixed
timeout of 50 ms. This will prevent adding a latency,
although very minor, for _every_ request.
Moreover the runtime_get_sync is now also used in set_ios and
suspend since the runtime resourses are needed here as well.
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxxxxxx>
---
drivers/mmc/host/mmci.c | 19 ++++++++++++++++---
1 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 45e794a..8971157 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -200,8 +200,10 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
host->mrq = NULL;
host->cmd = NULL;
- pm_runtime_put(mmc_dev(host->mmc));
mmc_request_done(host->mmc, mrq);
+
+ pm_runtime_mark_last_busy(mmc_dev(host->mmc));
+ pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
static void mmci_set_mask1(struct mmci_host *host, unsigned int mask)
@@ -1044,6 +1046,8 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
unsigned long flags;
int ret;
+ pm_runtime_get_sync(mmc_dev(mmc));
+
if (host->plat->ios_handler &&
host->plat->ios_handler(mmc_dev(mmc), ios))
dev_err(mmc_dev(mmc), "platform ios_handler failed\n");
@@ -1064,7 +1068,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
* power should be rare so we print an error
* and return here.
*/
- return;
+ goto out;
}
}
/*
@@ -1114,6 +1118,10 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
mmci_write_pwrreg(host, pwr);
spin_unlock_irqrestore(&host->lock, flags);
+
+ out:
+ pm_runtime_mark_last_busy(mmc_dev(mmc));
+ pm_runtime_put_autosuspend(mmc_dev(mmc));
}
static int mmci_get_ro(struct mmc_host *mmc)
@@ -1388,6 +1396,8 @@ static int __devinit mmci_probe(struct amba_device *dev,
mmci_dma_setup(host);
+ pm_runtime_set_autosuspend_delay(&dev->dev, 50);
+ pm_runtime_use_autosuspend(&dev->dev);
pm_runtime_put(&dev->dev);
mmc_add_host(mmc);
@@ -1483,8 +1493,10 @@ static int mmci_suspend(struct device *dev)
struct mmci_host *host = mmc_priv(mmc);
ret = mmc_suspend_host(mmc);
- if (ret == 0)
+ if (ret == 0) {
+ pm_runtime_get_sync(dev);
writel(0, host->base + MMCIMASK0);
+ }
}
return ret;
@@ -1500,6 +1512,7 @@ static int mmci_resume(struct device *dev)
struct mmci_host *host = mmc_priv(mmc);
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
+ pm_runtime_put(dev);
ret = mmc_resume_host(mmc);
}
--
1.7.5.4
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