genirq: Add runtime power management support for IRQ chips

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Some IRQ chips may be located in a power domain outside of the CPU
subsystem and hence will require device specific runtime power
management. In order to support such IRQ chips, add a pointer for a
device structure to the irq_chip structure, and if this pointer is
populated by the IRQ chip driver and CONFIG_PM is selected in the kernel
configuration, then the pm_runtime_get/put APIs for this chip will be
called when an IRQ is requested/freed, respectively.

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

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Jon Hunter 2016-06-07 16:12:29 +01:00 • committed by Marc Zyngier

parent 1e2a7d7849

commit be45beb2df

4 changed files with 75 additions and 1 deletions

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include/linux/irq.h

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