Commit 3fb1581e authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Russell King

ARM: 8199/1: PM / Runtime: Add getter for querying the IRQ safe option v12

Add a simple getter pm_runtime_is_irq_safe() for querying whether runtime
PM IRQ safe was set or not.

Various bus drivers implementing runtime PM may use choose to suspend
differently based on IRQ safeness status of child driver (e.g. do not
unprepare the clock if IRQ safe is not set).
Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Acked-by: default avatarRafael J. Wysocki <rjw@rjwysocki.net>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent f114040e
......@@ -468,6 +468,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
- set the power.irq_safe flag for the device, causing the runtime-PM
callbacks to be invoked with interrupts off
bool pm_runtime_is_irq_safe(struct device *dev);
- return true if power.irq_safe flag was set for the device, causing
the runtime-PM callbacks to be invoked with interrupts off
void pm_runtime_mark_last_busy(struct device *dev);
- set the power.last_busy field to the current time
......
......@@ -128,6 +128,11 @@ static inline void pm_runtime_mark_last_busy(struct device *dev)
ACCESS_ONCE(dev->power.last_busy) = jiffies;
}
static inline bool pm_runtime_is_irq_safe(struct device *dev)
{
return dev->power.irq_safe;
}
#else /* !CONFIG_PM_RUNTIME */
static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
......@@ -167,6 +172,7 @@ static inline bool pm_runtime_enabled(struct device *dev) { return false; }
static inline void pm_runtime_no_callbacks(struct device *dev) {}
static inline void pm_runtime_irq_safe(struct device *dev) {}
static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }
static inline void pm_runtime_mark_last_busy(struct device *dev) {}
......
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