Unverified Commit 66e40876 authored by Keyon Jie's avatar Keyon Jie Committed by Mark Brown
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ASoC: SOF: Intel: hda-dsp: implement suspend/resume for S0ix<->S0 transition 



Enable system wake up via IPC interrupt from DSP when the system is
suspending to the S0ix state, and disable it in the corresponding
resuming.

Signed-off-by: default avatarKeyon Jie <yang.jie@linux.intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191025224122.7718-24-pierre-louis.bossart@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ac8c046f

sound/soc/sof/intel/hda-dsp.c

+17 −0
Original line number Diff line number Diff line
@@ -477,6 +477,15 @@ static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume) 


int hda_dsp_resume(struct snd_sof_dev *sdev)

{

	struct pci_dev *pci = to_pci_dev(sdev->dev);



	if (sdev->s0_suspend) {

		/* restore and disable the system wakeup */

		pci_restore_state(pci);

		disable_irq_wake(pci->irq);

		return 0;

	}



	/* init hda controller. DSP cores will be powered up during fw boot */

	return hda_resume(sdev, false);

}
@@ -509,8 +518,16 @@ int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev) 
int hda_dsp_suspend(struct snd_sof_dev *sdev)

{

	struct hdac_bus *bus = sof_to_bus(sdev);

	struct pci_dev *pci = to_pci_dev(sdev->dev);

	int ret;



	if (sdev->s0_suspend) {

		/* enable the system waking up via IPC IRQ */

		enable_irq_wake(pci->irq);

		pci_save_state(pci);

		return 0;

	}



	/* stop hda controller and power dsp off */

	ret = hda_suspend(sdev, false);

	if (ret < 0) {