platform/x86: intel_int0002_vgpio: Implement irq_set_wake

We were relying on the interrupt being shared with the ACPI SCI and the
ACPI core calling irq_set_wake. But that does not always happen on
Bay Trail devices, so we should do it ourselves.

This fixes wake from USB not working on various Bay Trail devices.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/platform/x86/intel_int0002_vgpio.c b/drivers/platform/x86/intel_int0002_vgpio.c
index 987a3b03f225a0e70db705cbc67200d0f04ea52c..33c3489f5bc180f2a98139fc94541cbd4a8b4677 100644 (file)
--- a/drivers/platform/x86/intel_int0002_vgpio.c
+++ b/drivers/platform/x86/intel_int0002_vgpio.c
@@ -106,6 +106,21 @@ static void int0002_irq_mask(struct irq_data *data)
        outl(gpe_en_reg, GPE0A_EN_PORT);
 }
 
+static int int0002_irq_set_wake(struct irq_data *data, unsigned int on)
+{
+       struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
+       struct platform_device *pdev = to_platform_device(chip->parent);
+       int irq = platform_get_irq(pdev, 0);
+
+       /* Propagate to parent irq */
+       if (on)
+               enable_irq_wake(irq);
+       else
+               disable_irq_wake(irq);
+
+       return 0;
+}
+
 static irqreturn_t int0002_irq(int irq, void *data)
 {
        struct gpio_chip *chip = data;
@@ -128,6 +143,7 @@ static struct irq_chip int0002_irqchip = {
        .irq_ack                = int0002_irq_ack,
        .irq_mask               = int0002_irq_mask,
        .irq_unmask             = int0002_irq_unmask,
+       .irq_set_wake           = int0002_irq_set_wake,
 };
 
 static int int0002_probe(struct platform_device *pdev)