Hi, The context save functionality with IPC4 is triggered by sending a message to the firmware about the pending power down of the primary core by the host. In order to have this functionality implemented in a clean way we need to introduce a new IPC level PM ops for core state management and use that instead of open coding IPC messages here and there. The first patch updates the ctx store/ctx_restore documentation to clarify that they are optional. Regards, Peter --- Peter Ujfalusi (6): ASoC: SOF: make ctx_store and ctx_restore as optional ASoC: SOF: sof_ipc_pm_ops: Add support for DSP core power management ASoC: SOF: ipc3: Add set_core_state pm_ops implementation ASoC: SOF: ipc4: Add set_core_state pm_ops implementation ASoC: SOF: Intel: Switch to use the generic pm_ops.set_core_state ASoC: SOF: ipc4: implement pm ctx_save callback include/sound/sof/ipc4/header.h | 8 +++++++ sound/soc/sof/intel/hda-dsp.c | 15 +++++------- sound/soc/sof/intel/tgl.c | 30 ++++++++---------------- sound/soc/sof/ipc3.c | 18 +++++++++++++++ sound/soc/sof/ipc4.c | 41 +++++++++++++++++++++++++++++++++ sound/soc/sof/sof-priv.h | 6 +++-- 6 files changed, 87 insertions(+), 31 deletions(-) -- 2.36.1
