ASoC: Intel: Skylake: enable interrupt as wake source in active suspend

In active suspend, any HDA interrupt should wake the system. When device
enters active suspend, we need to enable HDA controller interrupt as wake
source. Similarly disable HDA controller interrupt as wake source when
exiting active suspend.
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl.c

@@ -218,6 +218,7 @@ static int skl_suspend(struct device *dev)
 	struct pci_dev *pci = to_pci_dev(dev);
 	struct hdac_ext_bus *ebus = pci_get_drvdata(pci);
 	struct skl *skl  = ebus_to_skl(ebus);
+	struct hdac_bus *bus = ebus_to_hbus(ebus);
 
 	/*
 	 * Do not suspend if streams which are marked ignore suspend are
@@ -225,6 +226,7 @@ static int skl_suspend(struct device *dev)
 	 */
 	if (skl->supend_active) {
 		snd_hdac_ext_bus_link_power_down_all(ebus);
+		enable_irq_wake(bus->irq);
 		pci_save_state(pci);
 		pci_disable_device(pci);
 		return 0;
@@ -238,6 +240,7 @@ static int skl_resume(struct device *dev)
 	struct pci_dev *pci = to_pci_dev(dev);
 	struct hdac_ext_bus *ebus = pci_get_drvdata(pci);
 	struct skl *skl  = ebus_to_skl(ebus);
+	struct hdac_bus *bus = ebus_to_hbus(ebus);
 	int ret;
 
 	/*
@@ -248,6 +251,7 @@ static int skl_resume(struct device *dev)
 		pci_restore_state(pci);
 		ret = pci_enable_device(pci);
 		snd_hdac_ext_bus_link_power_up_all(ebus);
+		disable_irq_wake(bus->irq);
 	} else {
 		ret = _skl_resume(ebus);
 	}