diff options
Diffstat (limited to 'sound/soc/sof/pm.c')
| -rw-r--r-- | sound/soc/sof/pm.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c index c86ac1e84bd7..bec25cb6beec 100644 --- a/sound/soc/sof/pm.c +++ b/sound/soc/sof/pm.c @@ -12,6 +12,42 @@ #include "sof-priv.h" #include "sof-audio.h" +/* + * Helper function to determine the target DSP state during + * system suspend. This function only cares about the device + * D-states. Platform-specific substates, if any, should be + * handled by the platform-specific parts. + */ +static u32 snd_sof_dsp_power_target(struct snd_sof_dev *sdev) +{ + u32 target_dsp_state; + + switch (sdev->system_suspend_target) { + case SOF_SUSPEND_S3: + /* DSP should be in D3 if the system is suspending to S3 */ + target_dsp_state = SOF_DSP_PM_D3; + break; + case SOF_SUSPEND_S0IX: + /* + * Currently, the only criterion for retaining the DSP in D0 + * is that there are streams that ignored the suspend trigger. + * Additional criteria such Soundwire clock-stop mode and + * device suspend latency considerations will be added later. + */ + if (snd_sof_stream_suspend_ignored(sdev)) + target_dsp_state = SOF_DSP_PM_D0; + else + target_dsp_state = SOF_DSP_PM_D3; + break; + default: + /* This case would be during runtime suspend */ + target_dsp_state = SOF_DSP_PM_D3; + break; + } + + return target_dsp_state; +} + static int sof_send_pm_ctx_ipc(struct snd_sof_dev *sdev, int cmd) { struct sof_ipc_pm_ctx pm_ctx; @@ -169,7 +205,7 @@ static int sof_suspend(struct device *dev, bool runtime_suspend) } } - if (snd_sof_dsp_d0i3_on_suspend(sdev)) { + if (snd_sof_dsp_power_target(sdev) == SOF_DSP_PM_D0) { /* suspend to D0i3 */ ret = snd_sof_set_d0_substate(sdev, SOF_DSP_D0I3); if (ret < 0) { |