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pinctrl: sunxi: Mask non-wakeup IRQs on suspend

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The pin controller hardware does not distinguish IRQs intended for
wakeup from other IRQs, so we must mask non-wakeup IRQs in software to
prevent inadvertent wakeups. This is accomplished at the irqchip level
via the IRQCHIP_MASK_ON_SUSPEND flag.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20200117213340.47714-2-samuel@sholland.org
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Samuel Holland 2020-01-17 15:33:40 -06:00 committed by Linus Walleij
parent a59c99d9ea
commit 8587b21c59
1 changed files with 2 additions and 0 deletions
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2
drivers/pinctrl/sunxi/pinctrl-sunxi.c
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@ -1076,6 +1076,7 @@ static struct irq_chip sunxi_pinctrl_edge_irq_chip = {
.irq_release_resources = sunxi_pinctrl_irq_release_resources,
.irq_set_type = sunxi_pinctrl_irq_set_type,
.irq_set_wake = sunxi_pinctrl_irq_set_wake,
.flags = IRQCHIP_MASK_ON_SUSPEND,
};
static struct irq_chip sunxi_pinctrl_level_irq_chip = {
@ -1092,6 +1093,7 @@ static struct irq_chip sunxi_pinctrl_level_irq_chip = {
.irq_set_type = sunxi_pinctrl_irq_set_type,
.irq_set_wake = sunxi_pinctrl_irq_set_wake,
.flags = IRQCHIP_EOI_THREADED |
IRQCHIP_MASK_ON_SUSPEND |
IRQCHIP_EOI_IF_HANDLED,
};