ASoC: SOF: add comp_ext to struct snd_sof_widget

Add member comp_ext to struct snd_sof_widget, which will be used for
topology extended tokens parsing.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200904132744.1699575-3-kai.vehmanen@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/sof/topology.h

@@ -87,6 +87,9 @@ struct sof_ipc_comp {
  */
 #define SOF_BUF_UNDERRUN_PERMITTED	BIT(1)
 
+/* the UUID size in bytes, shared between FW and host */
+#define SOF_UUID_SIZE	16
+
 /* create new component buffer - SOF_IPC_TPLG_BUFFER_NEW */
 struct sof_ipc_buffer {
 	struct sof_ipc_comp comp;
@@ -300,4 +303,9 @@ enum sof_event_types {
 	SOF_KEYWORD_DETECT_DAPM_EVENT,
 };
 
+/* extended data struct for UUID components */
+struct sof_ipc_comp_ext {
+	uint8_t uuid[SOF_UUID_SIZE];
+}  __packed;
+
 #endif

sound/soc/sof/sof-audio.h

@@ -89,6 +89,9 @@ struct snd_sof_widget {
 	struct snd_soc_dapm_widget *widget;
 	struct list_head list;	/* list in sdev widget list */
 
+	/* extended data for UUID components */
+	struct sof_ipc_comp_ext comp_ext;
+
 	void *private;		/* core does not touch this */
 };