diff options
| -rw-r--r-- | sound/soc/sof/ipc4.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c index b2cb92745ec6..5dd22f6a0605 100644 --- a/sound/soc/sof/ipc4.c +++ b/sound/soc/sof/ipc4.c @@ -618,7 +618,22 @@ static int sof_ipc4_set_core_state(struct snd_sof_dev *sdev, int core_idx, bool return sof_ipc4_tx_msg(sdev, &msg, msg.data_size, NULL, 0, false); } +/* + * The context save callback is used to send a message to the firmware notifying + * it that the primary core is going to be turned off, which is used as an + * indication to prepare for a full power down, thus preparing for IMR boot + * (when supported) + * + * Note: in IPC4 there is no message used to restore context, thus no context + * restore callback is implemented + */ +static int sof_ipc4_ctx_save(struct snd_sof_dev *sdev) +{ + return sof_ipc4_set_core_state(sdev, SOF_DSP_PRIMARY_CORE, false); +} + static const struct sof_ipc_pm_ops ipc4_pm_ops = { + .ctx_save = sof_ipc4_ctx_save, .set_core_state = sof_ipc4_set_core_state, }; |