[RFT][PATCH 10/12] mmc: change tmio_mmc platform power management to use dev_pm_ops

From: Shuah Khan
Date: Mon Feb 10 2014 - 11:15:19 EST


Change tmio_mmc platform driver to register pm ops using dev_pm_ops instead
of legacy pm_ops. .pm hooks call existing legacy suspend and resume interfaces
by passing in the right pm state.

Signed-off-by: Shuah Khan <shuah.kh@xxxxxxxxxxx>
---
drivers/mmc/host/tmio_mmc.c | 42 +++++++++++++++++++++++++++++++++++-------
1 file changed, 35 insertions(+), 7 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index 1900abb..e9b0a06 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -24,7 +24,7 @@
#include "tmio_mmc.h"

#ifdef CONFIG_PM
-static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
+static int __tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
{
const struct mfd_cell *cell = mfd_get_cell(dev);
int ret;
@@ -38,7 +38,22 @@ static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
return ret;
}

-static int tmio_mmc_resume(struct platform_device *dev)
+static int tmio_mmc_suspend(struct device *dev)
+{
+ return __tmio_mmc_suspend(to_platform_device(dev), PMSG_SUSPEND);
+}
+
+static int tmio_mmc_freeze(struct device *dev)
+{
+ return __tmio_mmc_suspend(to_platform_device(dev), PMSG_FREEZE);
+}
+
+static int tmio_mmc_poweroff(struct device *dev)
+{
+ return __tmio_mmc_suspend(to_platform_device(dev), PMSG_HIBERNATE);
+}
+
+static int __tmio_mmc_resume(struct platform_device *dev)
{
const struct mfd_cell *cell = mfd_get_cell(dev);
int ret = 0;
@@ -52,9 +67,21 @@ static int tmio_mmc_resume(struct platform_device *dev)

return ret;
}
-#else
-#define tmio_mmc_suspend NULL
-#define tmio_mmc_resume NULL
+
+static int tmio_mmc_resume(struct device *dev)
+{
+ return __tmio_mmc_resume(to_platform_device(dev));
+}
+
+static const struct dev_pm_ops tmio_mmc_dev_pm_ops = {
+ .suspend = tmio_mmc_suspend,
+ .resume = tmio_mmc_resume,
+ /* Hibernate hooks */
+ .freeze = tmio_mmc_freeze,
+ .thaw = tmio_mmc_resume,
+ .poweroff = tmio_mmc_poweroff,
+ .restore = tmio_mmc_resume,
+};
#endif

static int tmio_mmc_probe(struct platform_device *pdev)
@@ -138,11 +165,12 @@ static struct platform_driver tmio_mmc_driver = {
.driver = {
.name = "tmio-mmc",
.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &tmio_mmc_dev_pm_ops,
+#endif
},
.probe = tmio_mmc_probe,
.remove = tmio_mmc_remove,
- .suspend = tmio_mmc_suspend,
- .resume = tmio_mmc_resume,
};

module_platform_driver(tmio_mmc_driver);
--
1.7.10.4

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