[PATCH v2 1/2] gpio: vf610: mask the gpio irq in system suspend and support wakeup

[haibo.chen@xxxxxxx]

From: Haibo Chen <haibo.chen@xxxxxxx>

Add flag IRQCHIP_MASK_ON_SUSPEND to make sure gpio irq is masked on
suspend, if lack this flag, current irq arctitecture will not mask
the irq, and these unmasked gpio irq will wrongly wakeup the system
even they are not config as wakeup source.

Also add flag IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND to make sure the gpio
irq which is configed as wakeup source can work as expect.

Fixes: 7f2691a19627 ("gpio: vf610: add gpiolib/IRQ chip driver for Vybrid")
Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
 drivers/gpio/gpio-vf610.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index a89ae84a1fa0..77d5b8dd2bd5 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -260,7 +260,8 @@ static const struct irq_chip vf610_irqchip = {
 	.irq_unmask = vf610_gpio_irq_unmask,
 	.irq_set_type = vf610_gpio_irq_set_type,
 	.irq_set_wake = vf610_gpio_irq_set_wake,
-	.flags = IRQCHIP_IMMUTABLE,
+	.flags = IRQCHIP_IMMUTABLE | IRQCHIP_MASK_ON_SUSPEND
+			| IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };
 
-- 
2.34.1