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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4990d4fe32
Turns out we can automate the handling for the device_may_wakeup() quite a bit by using the kernel wakeup source list as suggested by Rafael J. Wysocki <rjw@rjwysocki.net>. And as some hardware has separate dedicated wake-up interrupt in addition to the IO interrupt, we can automate the handling by adding a generic threaded interrupt handler that just calls the device PM runtime to wake up the device. This allows dropping code from device drivers as we currently are doing it in multiple ways, and often wrong. For most drivers, we should be able to drop the following boilerplate code from runtime_suspend and runtime_resume functions: ... device_init_wakeup(dev, true); ... if (device_may_wakeup(dev)) enable_irq_wake(irq); ... if (device_may_wakeup(dev)) disable_irq_wake(irq); ... device_init_wakeup(dev, false); ... We can replace it with just the following init and exit time code: ... device_init_wakeup(dev, true); dev_pm_set_wake_irq(dev, irq); ... dev_pm_clear_wake_irq(dev); device_init_wakeup(dev, false); ... And for hardware with dedicated wake-up interrupts: ... device_init_wakeup(dev, true); dev_pm_set_dedicated_wake_irq(dev, irq); ... dev_pm_clear_wake_irq(dev); device_init_wakeup(dev, false); ... Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
9 lines
332 B
Makefile
9 lines
332 B
Makefile
obj-$(CONFIG_PM) += sysfs.o generic_ops.o common.o qos.o runtime.o wakeirq.o
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obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o
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obj-$(CONFIG_PM_TRACE_RTC) += trace.o
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obj-$(CONFIG_PM_OPP) += opp.o
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obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o domain_governor.o
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obj-$(CONFIG_HAVE_CLK) += clock_ops.o
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ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG
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