platform/x86: intel_int0002_vgpio: Use acpi_register_wakeup_handler()
The Power Management Events (PMEs) the INT0002 driver listens for get signalled by the Power Management Controller (PMC) using the same IRQ as used for the ACPI SCI. Since commitalistair/sensorsfdde0ff859
("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system") the SCI triggering, without there being a wakeup cause recognized by the ACPI sleep code, will no longer wakeup the system. This breaks PMEs / wakeups signalled to the INT0002 driver, the system never leaves the s2idle_loop() now. Use acpi_register_wakeup_handler() to register a function which checks the GPE0a_STS register for a PME and trigger a wakeup when a PME has been signalled. Fixes:fdde0ff859
("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system") Cc: 5.4+ <stable@vger.kernel.org> # 5.4+ Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
parent
ddfd9dcf27
commit
767191db82
|
@ -127,6 +127,14 @@ static irqreturn_t int0002_irq(int irq, void *data)
|
|||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static bool int0002_check_wake(void *data)
|
||||
{
|
||||
u32 gpe_sts_reg;
|
||||
|
||||
gpe_sts_reg = inl(GPE0A_STS_PORT);
|
||||
return (gpe_sts_reg & GPE0A_PME_B0_STS_BIT);
|
||||
}
|
||||
|
||||
static struct irq_chip int0002_byt_irqchip = {
|
||||
.name = DRV_NAME,
|
||||
.irq_ack = int0002_irq_ack,
|
||||
|
@ -220,6 +228,7 @@ static int int0002_probe(struct platform_device *pdev)
|
|||
return ret;
|
||||
}
|
||||
|
||||
acpi_register_wakeup_handler(irq, int0002_check_wake, NULL);
|
||||
device_init_wakeup(dev, true);
|
||||
return 0;
|
||||
}
|
||||
|
@ -227,6 +236,7 @@ static int int0002_probe(struct platform_device *pdev)
|
|||
static int int0002_remove(struct platform_device *pdev)
|
||||
{
|
||||
device_init_wakeup(&pdev->dev, false);
|
||||
acpi_unregister_wakeup_handler(int0002_check_wake, NULL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in New Issue