PM / runtime: Fetch runtime PM callbacks using a macro
While fetching the proper runtime PM callback, we walk the hierarchy of device's power domains, subsystems and drivers. This is common for rpm_suspend(), rpm_idle() and rpm_resume(). Let's clean up the code by using a macro that handles this. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -13,6 +13,42 @@
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#include <trace/events/rpm.h>
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#include "power.h"
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#define RPM_GET_CALLBACK(dev, cb) \
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({ \
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int (*__rpm_cb)(struct device *__d); \
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\
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if (dev->pm_domain) \
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__rpm_cb = dev->pm_domain->ops.cb; \
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else if (dev->type && dev->type->pm) \
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__rpm_cb = dev->type->pm->cb; \
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else if (dev->class && dev->class->pm) \
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__rpm_cb = dev->class->pm->cb; \
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else if (dev->bus && dev->bus->pm) \
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__rpm_cb = dev->bus->pm->cb; \
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else \
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__rpm_cb = NULL; \
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\
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if (!__rpm_cb && dev->driver && dev->driver->pm) \
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__rpm_cb = dev->driver->pm->cb; \
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\
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__rpm_cb; \
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})
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static int (*rpm_get_suspend_cb(struct device *dev))(struct device *)
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{
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return RPM_GET_CALLBACK(dev, runtime_suspend);
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}
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static int (*rpm_get_resume_cb(struct device *dev))(struct device *)
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{
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return RPM_GET_CALLBACK(dev, runtime_resume);
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}
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static int (*rpm_get_idle_cb(struct device *dev))(struct device *)
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{
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return RPM_GET_CALLBACK(dev, runtime_idle);
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}
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static int rpm_resume(struct device *dev, int rpmflags);
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static int rpm_suspend(struct device *dev, int rpmflags);
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@ -310,19 +346,7 @@ static int rpm_idle(struct device *dev, int rpmflags)
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dev->power.idle_notification = true;
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if (dev->pm_domain)
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callback = dev->pm_domain->ops.runtime_idle;
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else if (dev->type && dev->type->pm)
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callback = dev->type->pm->runtime_idle;
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else if (dev->class && dev->class->pm)
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callback = dev->class->pm->runtime_idle;
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else if (dev->bus && dev->bus->pm)
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callback = dev->bus->pm->runtime_idle;
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else
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callback = NULL;
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if (!callback && dev->driver && dev->driver->pm)
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callback = dev->driver->pm->runtime_idle;
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callback = rpm_get_idle_cb(dev);
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if (callback)
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retval = __rpm_callback(callback, dev);
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@ -492,19 +516,7 @@ static int rpm_suspend(struct device *dev, int rpmflags)
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__update_runtime_status(dev, RPM_SUSPENDING);
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if (dev->pm_domain)
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callback = dev->pm_domain->ops.runtime_suspend;
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else if (dev->type && dev->type->pm)
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callback = dev->type->pm->runtime_suspend;
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else if (dev->class && dev->class->pm)
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callback = dev->class->pm->runtime_suspend;
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else if (dev->bus && dev->bus->pm)
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callback = dev->bus->pm->runtime_suspend;
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else
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callback = NULL;
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if (!callback && dev->driver && dev->driver->pm)
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callback = dev->driver->pm->runtime_suspend;
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callback = rpm_get_suspend_cb(dev);
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retval = rpm_callback(callback, dev);
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if (retval)
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@ -724,19 +736,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
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__update_runtime_status(dev, RPM_RESUMING);
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if (dev->pm_domain)
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callback = dev->pm_domain->ops.runtime_resume;
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else if (dev->type && dev->type->pm)
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callback = dev->type->pm->runtime_resume;
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else if (dev->class && dev->class->pm)
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callback = dev->class->pm->runtime_resume;
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else if (dev->bus && dev->bus->pm)
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callback = dev->bus->pm->runtime_resume;
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else
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callback = NULL;
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if (!callback && dev->driver && dev->driver->pm)
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callback = dev->driver->pm->runtime_resume;
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callback = rpm_get_resume_cb(dev);
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retval = rpm_callback(callback, dev);
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if (retval) {
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