From: Libin Yang libin.yang@intel.com
When system enters s0ix, the dma trace won't be used. Otherwise, the DMA will access the host memory, which will prevent entering S0ix. Driver has notified firmware not to send message through dma trace. Let's also trigger stop dma trace in driver side.
Signed-off-by: Libin Yang libin.yang@intel.com Reviewed-by: Kai Vehmanen kai.vehmanen@intel.com Reviewed-by: Péter Ujfalusi peter.ujfalusi@linux.intel.com Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/pm.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c index a1a645a13c6d..44008dd075c2 100644 --- a/sound/soc/sof/pm.c +++ b/sound/soc/sof/pm.c @@ -102,11 +102,18 @@ static int sof_resume(struct device *dev, bool runtime_resume)
/* * Nothing further to be done for platforms that support the low power - * D0 substate. + * D0 substate. Resume trace and return when resuming from + * low-power D0 substate */ if (!runtime_resume && sof_ops(sdev)->set_power_state && - old_state == SOF_DSP_PM_D0) + old_state == SOF_DSP_PM_D0) { + ret = snd_sof_trace_resume(sdev); + if (ret < 0) + /* non fatal */ + dev_warn(sdev->dev, + "failed to enable trace after resume %d\n", ret); return 0; + }
sof_set_fw_state(sdev, SOF_FW_BOOT_PREPARE);
@@ -201,6 +208,7 @@ static int sof_suspend(struct device *dev, bool runtime_suspend)
/* Skip to platform-specific suspend if DSP is entering D0 */ if (target_state == SOF_DSP_PM_D0) { + snd_sof_trace_suspend(sdev, pm_state); /* Notify clients not managed by pm framework about core suspend */ sof_suspend_clients(sdev, pm_state); goto suspend;