Due to the available runtime PM callbacks, we are now able to put our
device into low power state at system suspend.
Earlier we could not accomplish this without trusting a power domain
for the device to take care of it. Now we are able to cope with
scenarios both with and without a power domain.
Cc: Russell King <li...@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hans...@linaro.org>
---
drivers/mmc/host/mmci.c | 45 +++++++++++++++++++++++++--------------------
1 file changed, 25 insertions(+), 20 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index c88da1c..074e0cb 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1723,33 +1723,38 @@ static int mmci_remove(struct amba_device *dev)
return 0;
}
-#ifdef CONFIG_SUSPEND
-static int mmci_suspend(struct device *dev)
+#ifdef CONFIG_PM_SLEEP
+static int mmci_suspend_late(struct device *dev)
{
- struct amba_device *adev = to_amba_device(dev);
- struct mmc_host *mmc = amba_get_drvdata(adev);
+ int ret = 0;
- if (mmc) {
- struct mmci_host *host = mmc_priv(mmc);
- pm_runtime_get_sync(dev);
- writel(0, host->base + MMCIMASK0);
- }
+ if (pm_runtime_status_suspended(dev))
+ return 0;
- return 0;
+ if (dev->pm_domain && dev->pm_domain->ops.runtime_suspend)
+ ret = dev->pm_domain->ops.runtime_suspend(dev);
+ else
+ ret = dev->bus->pm->runtime_suspend(dev);
+
+ if (!ret)
+ pm_runtime_set_suspended(dev);
+
+ return ret;
}
-static int mmci_resume(struct device *dev)
+static int mmci_resume_early(struct device *dev)
{
- struct amba_device *adev = to_amba_device(dev);
- struct mmc_host *mmc = amba_get_drvdata(adev);
+ int ret = 0;
- if (mmc) {
- struct mmci_host *host = mmc_priv(mmc);
- writel(MCI_IRQENABLE, host->base + MMCIMASK0);
- pm_runtime_put(dev);
- }
+ if (pm_runtime_status_suspended(dev))
+ return 0;
- return 0;
+ if (dev->pm_domain && dev->pm_domain->ops.runtime_resume)
+ ret = dev->pm_domain->ops.runtime_resume(dev);
+ else
+ ret = dev->bus->pm->runtime_resume(dev);
+
+ return ret;
}
#endif
@@ -1820,7 +1825,7 @@ static int mmci_runtime_resume(struct device *dev)
#endif
static const struct dev_pm_ops mmci_dev_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(mmci_suspend, mmci_resume)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(mmci_suspend_late, mmci_resume_early)
SET_PM_RUNTIME_PM_OPS(mmci_runtime_suspend, mmci_runtime_resume, NULL)
};
--
1.7.9.5
--
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