3 files changed, 34 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c
index 2ae94ea53122..e1550ccd0a49 100644
--- a/sound/soc/sof/intel/hda-loader.c
+++ b/sound/soc/sof/intel/hda-loader.c
@@ -347,6 +347,24 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
 	}
 
 	/*
+	 * When a SoundWire link is in clock stop state, a Slave
+	 * device may trigger in-band wakes for events such as jack
+	 * insertion or acoustic event detection. This event will lead
+	 * to a WAKEEN interrupt, handled by the PCI device and routed
+	 * to PME if the PCI device is in D3. The resume function in
+	 * audio PCI driver will be invoked by ACPI for PME event and
+	 * initialize the device and process WAKEEN interrupt.
+	 *
+	 * The WAKEEN interrupt should be processed ASAP to prevent an
+	 * interrupt flood, otherwise other interrupts, such IPC,
+	 * cannot work normally.  The WAKEEN is handled after the ROM
+	 * is initialized successfully, which ensures power rails are
+	 * enabled before accessing the SoundWire SHIM registers
+	 */
+	if (!sdev->first_boot)
+		hda_sdw_process_wakeen(sdev);
+
+	/*
 	 * at this point DSP ROM has been initialized and
 	 * should be ready for code loading and firmware boot
 	 */
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 1e69cfcee8e0..7d1aa4c7d82c 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -241,6 +241,17 @@ static irqreturn_t hda_dsp_sdw_thread(int irq, void *context)
 	return sdw_intel_thread(irq, context);
 }
 
+void hda_sdw_process_wakeen(struct snd_sof_dev *sdev)
+{
+	struct sof_intel_hda_dev *hdev;
+
+	hdev = sdev->pdata->hw_pdata;
+	if (!hdev->sdw)
+		return;
+
+	sdw_intel_process_wakeen_event(hdev->sdw);
+}
+
 #endif
 
 /*
diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index fc104c5ba006..6f1765b1ed1d 100644
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -671,6 +671,7 @@ int hda_dsp_trace_trigger(struct snd_sof_dev *sdev, int cmd);
 
 int hda_sdw_startup(struct snd_sof_dev *sdev);
 void hda_sdw_int_enable(struct snd_sof_dev *sdev, bool enable);
+void hda_sdw_process_wakeen(struct snd_sof_dev *sdev);
 
 #else
 
@@ -707,6 +708,10 @@ static inline irqreturn_t hda_dsp_sdw_thread(int irq, void *context)
 {
 	return IRQ_HANDLED;
 }
+
+static inline void hda_sdw_process_wakeen(struct snd_sof_dev *sdev)
+{
+}
 #endif
 
 /* common dai driver */