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ASoC: SOF: Intel: hda-dsp: implement suspend/resume for S0ix<->S0 transition

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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: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-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: Mark Brown <broonie@kernel.org>
This commit is contained in:
Keyon Jie 2019-10-25 17:41:19 -05:00 committed by Mark Brown
parent ac8c046f19
commit 66e40876dd
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GPG Key ID: 24D68B725D5487D0
1 changed files with 17 additions and 0 deletions
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17
sound/soc/sof/intel/hda-dsp.c
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@ -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) {