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ASoC: SOF: Intel: implement runtime idle for CNL/APL

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Implement runtime idle for CNL/APL devices using similar runtime
PM idle logic as the Intel AZX HDA driver. If any HDA codecs are
powered when runtime suspend request comes, return -EBUSY. By doing
this, strict ordering is enforced between HDA codec and the HDA
controller.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20190702132428.13129-4-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kai Vehmanen 2019-07-02 16:24:28 +03:00 committed by Mark Brown
parent 62fde9772d
commit 87a6fe80d5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 15 additions and 0 deletions
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1
sound/soc/sof/intel/apl.c
View File

@ -93,6 +93,7 @@ const struct snd_sof_dsp_ops sof_apl_ops = {
.resume = hda_dsp_resume,
.runtime_suspend = hda_dsp_runtime_suspend,
.runtime_resume = hda_dsp_runtime_resume,
.runtime_idle = hda_dsp_runtime_idle,
.set_hw_params_upon_resume = hda_dsp_set_hw_params_upon_resume,
};
EXPORT_SYMBOL(sof_apl_ops);

1
sound/soc/sof/intel/cnl.c
View File

@ -251,6 +251,7 @@ const struct snd_sof_dsp_ops sof_cnl_ops = {
.resume = hda_dsp_resume,
.runtime_suspend = hda_dsp_runtime_suspend,
.runtime_resume = hda_dsp_runtime_resume,
.runtime_idle = hda_dsp_runtime_idle,
.set_hw_params_upon_resume = hda_dsp_set_hw_params_upon_resume,
};
EXPORT_SYMBOL(sof_cnl_ops);

13
sound/soc/sof/intel/hda-dsp.c
View File

@ -418,6 +418,19 @@ int hda_dsp_runtime_resume(struct snd_sof_dev *sdev)
return hda_resume(sdev);
}
int hda_dsp_runtime_idle(struct snd_sof_dev *sdev)
{
struct hdac_bus *hbus = sof_to_bus(sdev);
if (hbus->codec_powered) {
dev_dbg(sdev->dev, "some codecs still powered (%08X), not idle\n",
(unsigned int)hbus->codec_powered);
return -EBUSY;
}
return 0;
}
int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev, int state)
{
/* stop hda controller and power dsp off */