The commands in sof_ipc_dai_config.flags are encoded as bits:
1 (bit0) - hw_params
2 (bit1) - hw_free
4 (bit2) - pause
These are commands, they cannot be combined as one would assume, for
example
3 (bit0 | bit1) is invalid.
This can happen right at the second start of a stream as at the end of the
first stream we set the hw_free command (bit1) and on the second start we
would OR on top of it the hw_params (bit0).
Fixes: b66bfc3a9810 ("ASoC: SOF: sof-audio: Fix broken early bclk feature for SSP")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Daniel Baluta <daniel.baluta@xxxxxxx>
Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
sound/soc/sof/ipc3-topology.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sound/soc/sof/ipc3-topology.c b/sound/soc/sof/ipc3-topology.c
index fc1eb8e2de2c..ba4ef290b634 100644
--- a/sound/soc/sof/ipc3-topology.c
+++ b/sound/soc/sof/ipc3-topology.c
@@ -2103,10 +2103,13 @@ static int sof_ipc3_dai_config(struct snd_sof_dev *sdev, struct snd_sof_widget *
* For the case of PAUSE/HW_FREE, since there are no quirks, flags can be used as is.
*/
- if (flags & SOF_DAI_CONFIG_FLAGS_HW_PARAMS)
+ if (flags & SOF_DAI_CONFIG_FLAGS_HW_PARAMS) {
+ /* Clear stale command */
+ config->flags &= ~SOF_DAI_CONFIG_FLAGS_CMD_MASK;
config->flags |= flags;
- else
+ } else {
config->flags = flags;
+ }
/* only send the IPC if the widget is set up in the DSP */
if (swidget->use_count > 0) {
--
2.40.1
