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authorHans de Goede <hdegoede@redhat.com>2017-03-24 11:08:47 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-03-30 11:08:46 +0200
commit8a146fbe1f1461aebc9b8f06a0f22e1a8a4f0dd1 (patch)
treefa6983aa0e43c5b4ac0272537d68ff6f40f53d17 /drivers/gpio
parentc02ed2e75ef4c74e41e421acb4ef1494671585e8 (diff)
downloadlinux-8a146fbe1f1461aebc9b8f06a0f22e1a8a4f0dd1.tar.bz2
gpio: acpi: Call enable_irq_wake for _IAE GpioInts with Wake set
On Bay Trail / Cherry Trail systems with a LID switch, the LID switch is often connect to a gpioint handled by an _IAE event handler. Before this commit such systems would not wake up when opening the lid, requiring the powerbutton to be pressed after opening the lid to wakeup. Note that Bay Trail / Cherry Trail systems use suspend-to-idle, so the interrupts are generated anyway on those lines on lid switch changes, but they are treated by the IRQ subsystem as spurious while suspended if not marked as wakeup IRQs. This commit calls enable_irq_wake() for _IAE GpioInts with a valid event handler which have their Wake flag set. This fixes such systems not waking up when opening the lid. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib-acpi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 9b37a3692b3f..8e318f449d23 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -266,6 +266,9 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
goto fail_free_event;
}
+ if (agpio->wake_capable == ACPI_WAKE_CAPABLE)
+ enable_irq_wake(irq);
+
list_add_tail(&event->node, &acpi_gpio->events);
return AE_OK;
@@ -339,6 +342,9 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
struct gpio_desc *desc;
+ if (irqd_is_wakeup_set(irq_get_irq_data(event->irq)))
+ disable_irq_wake(event->irq);
+
free_irq(event->irq, event);
desc = event->desc;
if (WARN_ON(IS_ERR(desc)))