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Subject[RFT][PATCH 07/12] isa: change isa bus power management to use dev_pm_ops
Date
Change isa bus 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@samsung.com>
---
drivers/base/isa.c | 30 +++++++++++++++++++++++++++---
1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/drivers/base/isa.c b/drivers/base/isa.c
index 91dba65..15b8825 100644
--- a/drivers/base/isa.c
+++ b/drivers/base/isa.c
@@ -63,7 +63,7 @@ static void isa_bus_shutdown(struct device *dev)
isa_driver->shutdown(dev, to_isa_dev(dev)->id);
}

-static int isa_bus_suspend(struct device *dev, pm_message_t state)
+static int __isa_bus_suspend(struct device *dev, pm_message_t state)
{
struct isa_driver *isa_driver = dev->platform_data;

@@ -73,6 +73,21 @@ static int isa_bus_suspend(struct device *dev, pm_message_t state)
return 0;
}

+static int isa_bus_suspend(struct device *dev)
+{
+ return __isa_bus_suspend(dev, PMSG_SUSPEND);
+}
+
+static int isa_bus_freeze(struct device *dev)
+{
+ return __isa_bus_suspend(dev, PMSG_FREEZE);
+}
+
+static int isa_bus_poweroff(struct device *dev)
+{
+ return __isa_bus_suspend(dev, PMSG_HIBERNATE);
+}
+
static int isa_bus_resume(struct device *dev)
{
struct isa_driver *isa_driver = dev->platform_data;
@@ -83,14 +98,23 @@ static int isa_bus_resume(struct device *dev)
return 0;
}

+static const struct dev_pm_ops isa_bus_dev_pm_ops = {
+ .suspend = isa_bus_suspend,
+ .resume = isa_bus_resume,
+ /* Hibernate callbacks */
+ .freeze = isa_bus_freeze,
+ .thaw = isa_bus_resume,
+ .poweroff = isa_bus_poweroff,
+ .restore = isa_bus_resume,
+};
+
static struct bus_type isa_bus_type = {
.name = "isa",
.match = isa_bus_match,
.probe = isa_bus_probe,
.remove = isa_bus_remove,
.shutdown = isa_bus_shutdown,
- .suspend = isa_bus_suspend,
- .resume = isa_bus_resume
+ .pm = &isa_bus_dev_pm_ops,
};

static void isa_dev_release(struct device *dev)
--
1.7.10.4


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