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| author | Maulik Shah <mkshah@codeaurora.org> | 2020-09-28 07:32:01 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-10-06 13:23:41 +0300 |
| commit | 90428a8eb4947f9c7c905a178f3520dc7e2ee6d2 (patch) | |
| tree | 171d58fc480ed090807c29cd9bc27e6e5ca24930 /kernel/irq/debugfs.c | |
| parent | f41aaca593377a4fe3984459fd4539481263b4cd (diff) | |
| download | linux-90428a8eb4947f9c7c905a178f3520dc7e2ee6d2.tar.xz | |
genirq/PM: Introduce IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag
An interrupt that is disabled/masked but set for wakeup may still need to
be able to wake up the system from sleep states like "suspend to RAM".
To that effect, introduce the IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag.
If the irqchip have this flag set, the irq PM code will enable/unmask
the irqs that are marked for wakeup, but that are in a disabled state.
On resume, such irqs will be restored back to their disabled state.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
[maz: commit message fix-up]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/1601267524-20199-4-git-send-email-mkshah@codeaurora.org
Diffstat (limited to 'kernel/irq/debugfs.c')
| -rw-r--r-- | kernel/irq/debugfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c index b95ff5d5f4bd..b6e10945e8be 100644 --- a/kernel/irq/debugfs.c +++ b/kernel/irq/debugfs.c @@ -57,6 +57,7 @@ static const struct irq_bit_descr irqchip_flags[] = { BIT_MASK_DESCR(IRQCHIP_EOI_THREADED), BIT_MASK_DESCR(IRQCHIP_SUPPORTS_LEVEL_MSI), BIT_MASK_DESCR(IRQCHIP_SUPPORTS_NMI), + BIT_MASK_DESCR(IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND), }; static void @@ -125,6 +126,8 @@ static const struct irq_bit_descr irqdata_states[] = { BIT_MASK_DESCR(IRQD_DEFAULT_TRIGGER_SET), BIT_MASK_DESCR(IRQD_HANDLE_ENFORCE_IRQCTX), + + BIT_MASK_DESCR(IRQD_IRQ_ENABLED_ON_SUSPEND), }; static const struct irq_bit_descr irqdesc_states[] = { |