mic_privacy: initial implementation

src/audio/base_fw.c

@@ -274,6 +274,20 @@ static int basefw_resource_allocation_request(bool first_block,
 	}
 }
 
+static int basefw_mic_priv_state_changed(bool first_block,
+                    bool last_block,
+                    uint32_t data_offset_or_size,
+                    const char *data)
+{
+    tr_info(&basefw_comp_tr, "basefw_mic_priv_state_changed, status = %d", *data);
+
+    uint32_t mic_disable_status = (uint32_t)(*data);
+    struct mic_privacy_settings settings = fill_mic_priv_settings(mic_disable_status);
+    propagate_privacy_settings(&settings);
+
+    return 0;
+}
+
 static int basefw_set_mic_priv_policy(bool first_block,
 					bool last_block,
 					uint32_t data_offset_or_size,
@@ -664,6 +678,9 @@ static int basefw_set_large_config(struct comp_dev *dev,
 	case IPC4_RESOURCE_ALLOCATION_REQUEST:
 		return basefw_resource_allocation_request(first_block, last_block, data_offset,
 							  data);
+	case SNDW_MIC_PRIVACY_HW_MANAGED_STATE_CHANGE:
+	    return basefw_mic_priv_state_changed(first_block, last_block, data_offset,
+            data);
 	case IPC4_SET_MIC_PRIVACY_FW_MANAGED_POLICY_MASK:
 		return basefw_set_mic_priv_policy(first_block, last_block, data_offset, data);
 	default:

src/include/ipc4/base_fw.h

@@ -289,6 +289,12 @@ enum ipc4_basefw_params {
 	/* Use LARGE_CONFIG_SET to change SDW ownership */
 	IPC4_SDW_OWNERSHIP = 31,
 
+	/*!
+	 * This command is used by SW to notify FW for changing state of Mic Privacy
+	 * for SoundWire Gateways
+	 */
+	SNDW_MIC_PRIVACY_HW_MANAGED_STATE_CHANGE = 35,
+
 	IPC4_SET_MIC_PRIVACY_FW_MANAGED_POLICY_MASK =36,
 };