From: Rander Wang <rander.wang@xxxxxxxxx>
The driver shall update the power state to D0i0 before sending
a generic IPC. Power-related IPCs are the exception to the rule,
they may be sent even when the power-state is D0i3
Signed-off-by: Rander Wang <rander.wang@xxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
sound/soc/sof/ipc4.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c
index b27ec16ebdfa..8ede4b952997 100644
--- a/sound/soc/sof/ipc4.c
+++ b/sound/soc/sof/ipc4.c
@@ -370,6 +370,17 @@ static int sof_ipc4_tx_msg(struct snd_sof_dev *sdev, void *msg_data, size_t msg_
if (!msg_data)
return -EINVAL;
+ if (!no_pm) {
+ const struct sof_dsp_power_state target_state = {
+ .state = SOF_DSP_PM_D0,
+ };
+
+ /* ensure the DSP is in D0i0 before sending a new IPC */
+ ret = snd_sof_dsp_set_power_state(sdev, &target_state);
+ if (ret < 0)
+ return ret;
+ }
+
/* Serialise IPC TX */
mutex_lock(&ipc->tx_mutex);
--
2.39.1
