IPC4: Add header to support user space ALSA notifications

This patch adds struct sof_ipc4_notify_module_data that matches the Linux kernel handler for notifications from firmware to ALSA user space. The SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_VAL event_id is used to identify the notifications for ALSA controls like switch and enum. Signed-off-by: Peter Ujfalusi <[email protected]> Signed-off-by: Seppo Ingalsuo <[email protected]>
thesofproject · Oct 20, 2023 · 2932cbc · 2932cbc
1 parent b54b0e2
commit 2932cbc
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/src/include/ipc4/header.h b/src/include/ipc4/header.h
@@ -173,6 +173,7 @@ struct ipc4_message_reply {
 
 #define SOF_IPC4_SWITCH_CONTROL_PARAM_ID 200
 #define SOF_IPC4_ENUM_CONTROL_PARAM_ID  201
+#define SOF_IPC4_NOTIFY_MODULE_EVENTID_ALSA_MAGIC_VAL ((uint32_t)(0xA15A << 16))
 
 /**
  * struct sof_ipc4_ctrl_value_chan: generic channel mapped value data
@@ -198,4 +199,20 @@ struct sof_ipc4_control_msg_payload {
 	struct sof_ipc4_ctrl_value_chan chanv[];
 } __attribute((packed, aligned(4)));
 
+/**
+ * struct sof_ipc4_notify_module_data - payload for module notification
+ * @instance_id: instance ID of the originator module of the notification
+ * @module_id: module ID of the originator of the notification
+ * @event_id: module specific event id
+ * @event_data_size: Size of the @event_data (if any) in bytes
+ * @event_data: Optional notification data, module and notification dependent
+ */
+struct sof_ipc4_notify_module_data {
+	uint16_t instance_id;
+	uint16_t module_id;
+	uint32_t event_id;
+	uint32_t event_data_size;
+	uint8_t event_data[];
+} __attribute((packed, aligned(4)));
+
 #endif