[PATCH v2 21/24] ASoC: SOF: ipc4: Handle compressed drain done notification from firmware

[Peter Ujfalusi <peter.ujfalusi@linux.intel.com>]

The decoder module sends a drain done notification when the last chunk of
the stream after the EOS from host has been decoded.

The notification is a module notification with 0xc0c0 as magic number in
event_id upper 16 bit.

Call sof_ipc4_compr_drain_done() when the notification arrives to handle
it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
---
 include/sound/sof/ipc4/header.h |  3 ++-
 sound/soc/sof/ipc4.c            | 13 +++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/include/sound/sof/ipc4/header.h b/include/sound/sof/ipc4/header.h
index dd1e0d1cf0d8..c0216f4b14c2 100644
--- a/include/sound/sof/ipc4/header.h
+++ b/include/sound/sof/ipc4/header.h
@@ -647,9 +647,10 @@ struct sof_ipc4_notify_module_data {
  * The event_data contains the struct sof_ipc4_control_msg_payload of the control
  * which sent the notification.
  */
-#define SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_MASK		GENMASK(31, 16)
+#define SOF_IPC4_NOTIFY_MODULE_EVENTID_SOF_MAGIC_MASK		GENMASK(31, 16)
 #define SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_VAL		0xA15A0000
 #define SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_PARAMID_MASK	GENMASK(15, 0)
+#define SOF_IPC4_NOTIFY_MODULE_EVENTID_COMPR_MAGIC_VAL		0xC0C00000
 
 /*
  * Macros for creating struct sof_ipc4_module_init_ext_init payload
diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c
index e77f73390bd8..b9dd798e59bc 100644
--- a/sound/soc/sof/ipc4.c
+++ b/sound/soc/sof/ipc4.c
@@ -776,12 +776,21 @@ static void sof_ipc4_module_notification_handler(struct snd_sof_dev *sdev,
 	}
 
 	/* Handle ALSA kcontrol notification */
-	if ((data->event_id & SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_MASK) ==
-	    SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_VAL) {
+	switch (data->event_id & SOF_IPC4_NOTIFY_MODULE_EVENTID_SOF_MAGIC_MASK) {
+	case SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_VAL:
+	{
 		const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg;
 
 		if (tplg_ops->control->update)
 			tplg_ops->control->update(sdev, ipc4_msg);
+
+		break;
+	}
+	case SOF_IPC4_NOTIFY_MODULE_EVENTID_COMPR_MAGIC_VAL:
+		sof_ipc4_compr_drain_done(sdev, ipc4_msg);
+		break;
+	default:
+		break;
 	}
 }
 
-- 
2.55.0