diff options
| -rw-r--r-- | sound/soc/sof/intel/hda-dsp.c | 15 | ||||
| -rw-r--r-- | sound/soc/sof/intel/hda.h | 3 |
2 files changed, 18 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c index 8cd5ecc01b62..4a4d318f97ff 100644 --- a/sound/soc/sof/intel/hda-dsp.c +++ b/sound/soc/sof/intel/hda-dsp.c @@ -478,9 +478,16 @@ static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume) int hda_dsp_resume(struct snd_sof_dev *sdev) { + struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct pci_dev *pci = to_pci_dev(sdev->dev); if (sdev->s0_suspend) { + /* restore L1SEN bit */ + if (hda->l1_support_changed) + snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, + HDA_VS_INTEL_EM2, + HDA_VS_INTEL_EM2_L1SEN, 0); + /* restore and disable the system wakeup */ pci_restore_state(pci); disable_irq_wake(pci->irq); @@ -518,11 +525,19 @@ int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev) int hda_dsp_suspend(struct snd_sof_dev *sdev) { + struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct hdac_bus *bus = sof_to_bus(sdev); struct pci_dev *pci = to_pci_dev(sdev->dev); int ret; if (sdev->s0_suspend) { + /* enable L1SEN to make sure the system can enter S0Ix */ + hda->l1_support_changed = + snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, + HDA_VS_INTEL_EM2, + HDA_VS_INTEL_EM2_L1SEN, + HDA_VS_INTEL_EM2_L1SEN); + /* enable the system waking up via IPC IRQ */ enable_irq_wake(pci->irq); pci_save_state(pci); diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index 5ad73a34b09c..18d7e72bf9b7 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -408,6 +408,9 @@ struct sof_intel_hda_dev { int irq; + /* PM related */ + bool l1_support_changed;/* during suspend, is L1SEN changed or not */ + /* DMIC device */ struct platform_device *dmic_dev; }; |