[PATCH 3/9] ASoC: SOF: add time info structure for ipc4 path

[Peter Ujfalusi]

From: Rander Wang <rander.wang at intel.com>

Start_stream_offset is used to strip invalid sample count in dai
for some cases like dai is started before host. llp_offset is used
to get current dai position from memory windows.

Signed-off-by: Rander Wang <rander.wang at intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 sound/soc/sof/ipc4-priv.h | 14 ++++++++++++++
 sound/soc/sof/sof-audio.h |  3 +++
 2 files changed, 17 insertions(+)

diff --git a/sound/soc/sof/ipc4-priv.h b/sound/soc/sof/ipc4-priv.h
index 8f8259a7e21c..f461b8c70df3 100644
--- a/sound/soc/sof/ipc4-priv.h
+++ b/sound/soc/sof/ipc4-priv.h
@@ -87,6 +87,20 @@ struct sof_ipc4_fw_data {
 	struct mutex pipeline_state_mutex; /* protect pipeline triggers, ref counts and states */
 };
 
+/**
+ * struct sof_ipc4_timestamp_info - IPC4 timestamp info
+ * @host_copier: the host copier of the pcm stream
+ * @dai_copier: the dai copier of the pcm stream
+ * @stream_start_offset: reported by fw in memory window
+ * @llp_offset: llp offset in memory window
+ */
+struct sof_ipc4_timestamp_info {
+	struct sof_ipc4_copier *host_copier;
+	struct sof_ipc4_copier *dai_copier;
+	u64 stream_start_offset;
+	u32 llp_offset;
+};
+
 extern const struct sof_ipc_fw_loader_ops ipc4_loader_ops;
 extern const struct sof_ipc_tplg_ops ipc4_tplg_ops;
 extern const struct sof_ipc_tplg_control_ops tplg_ipc4_control_ops;
diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h
index b0593b46d477..334b715b17c8 100644
--- a/sound/soc/sof/sof-audio.h
+++ b/sound/soc/sof/sof-audio.h
@@ -311,6 +311,9 @@ struct snd_sof_pcm_stream {
 	 */
 	bool suspend_ignored;
 	struct snd_sof_pcm_stream_pipeline_list pipeline_list;
+
+	/* used by IPC implementation and core does not touch it */
+	void *private;
 };
 
 /* ALSA SOF PCM device */
-- 
2.39.1